Soil Dynamics and Earthquake Engineering最新文献_第7页

A VMD-based baseline correction method of strong ground motion records and permanent displacement evaluation 基于vmd的强地震动记录基线校正方法及永久位移评估

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-06 DOI: 10.1016/j.soildyn.2026.110089

Baofeng Zhou , Cong Zhang , Xiaomin Wang , Yinuo Wang , Yue Yin , Maosheng Gong

Permanent displacement derived from strong-motion records is a key indicator for assessing surface deformation and the performance of fault-crossing structures, but is highly sensitive to baseline drift in acceleration time histories. This study proposes a fully automated baseline-correction scheme that combines Variational Mode Decomposition (VMD) with a three-segment fitting strategy. The velocity record is first decomposed by VMD, and the long-period residual component is used to identify the baseline drift. Optimal segmentation times in the pre-event, strong-motion and post-event windows are then searched on the residual, and a first- or second-order three-segment baseline is constructed, yielding mutually consistent acceleration, velocity and displacement time histories. The method is applied to near-fault records from four large earthquakes (the 1999 Chi–Chi, 2008 Wenchuan, 2011 Tohoku and 2023 Turkey events) and validated against co-seismic displacements from nearby GPS stations. For both single-pulse and double-pulse records, the corrected velocity tails converge to zero and the permanent displacements agree well with GPS, while the recovered multi-step displacement of double-pulse records is better preserved than with the widely used eBASCO procedure. The permanent displacement fields reconstructed for thrust-type events exhibit clear fault-normal offsets and pronounced hanging-wall effects, whereas the strike-slip event is characterized by fault-parallel motions with smaller vertical components, consistently reflecting the underlying source mechanisms. Overall, the proposed method offers a robust solution for strong motion records baseline correction and permanent displacement estimation, with potential applications in ground motion analysis, damage assessment, and resilient infrastructure design.

从强震记录中得到的永久位移是评估地表变形和断层穿越构造性能的关键指标，但在加速度时程中对基线漂移高度敏感。本文提出了一种将变分模态分解（VMD）与三段拟合策略相结合的全自动基线校正方案。首先对速度记录进行VMD分解，利用长周期残差分量识别基线漂移。然后在残差上搜索事件前、强运动和事件后窗口的最佳分割时间，并构建一阶或二阶三段基线，从而产生相互一致的加速度、速度和位移时间历史。该方法应用于4次大地震（1999年集济、2008年汶川、2011年东北和2023年土耳其地震）的近断层记录，并与附近GPS站的同震位移进行了验证。对于单脉冲和双脉冲记录，修正速度尾收敛于零，永久位移与GPS一致，而双脉冲记录的恢复多步位移比广泛使用的eBASCO程序保存得更好。逆冲型地震的永久位移场表现出明显的断层-正向偏移和明显的上盘效应，而走滑事件的特征是断层平行运动，垂直分量较小，一致地反映了潜在的震源机制。总的来说，所提出的方法为强震记录基线校正和永久位移估计提供了一个强大的解决方案，在地面运动分析、损伤评估和弹性基础设施设计中具有潜在的应用前景。

{"title":"A VMD-based baseline correction method of strong ground motion records and permanent displacement evaluation","authors":"Baofeng Zhou , Cong Zhang , Xiaomin Wang , Yinuo Wang , Yue Yin , Maosheng Gong","doi":"10.1016/j.soildyn.2026.110089","DOIUrl":"10.1016/j.soildyn.2026.110089","url":null,"abstract":"<div><div>Permanent displacement derived from strong-motion records is a key indicator for assessing surface deformation and the performance of fault-crossing structures, but is highly sensitive to baseline drift in acceleration time histories. This study proposes a fully automated baseline-correction scheme that combines Variational Mode Decomposition (VMD) with a three-segment fitting strategy. The velocity record is first decomposed by VMD, and the long-period residual component is used to identify the baseline drift. Optimal segmentation times in the pre-event, strong-motion and post-event windows are then searched on the residual, and a first- or second-order three-segment baseline is constructed, yielding mutually consistent acceleration, velocity and displacement time histories. The method is applied to near-fault records from four large earthquakes (the 1999 Chi–Chi, 2008 Wenchuan, 2011 Tohoku and 2023 Turkey events) and validated against co-seismic displacements from nearby GPS stations. For both single-pulse and double-pulse records, the corrected velocity tails converge to zero and the permanent displacements agree well with GPS, while the recovered multi-step displacement of double-pulse records is better preserved than with the widely used eBASCO procedure. The permanent displacement fields reconstructed for thrust-type events exhibit clear fault-normal offsets and pronounced hanging-wall effects, whereas the strike-slip event is characterized by fault-parallel motions with smaller vertical components, consistently reflecting the underlying source mechanisms. Overall, the proposed method offers a robust solution for strong motion records baseline correction and permanent displacement estimation, with potential applications in ground motion analysis, damage assessment, and resilient infrastructure design.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110089"},"PeriodicalIF":4.6,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic performance of simply supported hot rolled shape steel–UHPC composite girder bridges under near-fault ground motions 近断层地震动作用下简支热轧型钢-超高性能混凝土组合梁桥的抗震性能

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-06 DOI: 10.1016/j.soildyn.2025.110075

Xiangcheng Meng , Haidong Wang , Suiwen Wu , Guang Chen , Xudong Shao , Junfei Huang

The hot rolled shape steel (HRSS)–ultra high performance concrete (UHPC) composite girder bridge proposed by the authors is a novel bridge type, which can achieve a substantial weight reduction of about 50 %. This bridge type is expected to lower seismic inertial forces and demands on the substructure. However, these relative seismic advantages have not been systematically investigated or quantified. To address this gap, the seismic response of a typical simply supported HRSS-UHPC bridge is analyzed and quantified under near-fault ground motions using Incremental Dynamic Analysis-based fragility analysis. For comparison purpose, a conventional prestressed concrete (PSC) bridge is taken a reference. Results reveal that the HRSS-UHPC bridge's reduced superstructure mass (48.23 % lighter) significantly lowers overall seismic demands, particularly in the transverse direction, and enhances its collapse resistance. However, superstructure lightweight design does not consistently improve longitudinal bearing control. In addition, Effective Peak Acceleration (EPA) is identified as the optimal intensity measure for both bridge models. Moreover, the HRSS-UHPC bridge demonstrates superior seismic performance and collapse resistance, as evidenced by a significant increase in median EPA values for all structural components except for the bearing damage in the longitudinal direction. Meanwhile, the vulnerability of HRSS-UHPC bridge shifts to the bearing damage in the longitudinal direction at higher damage states, increasing girder unseating risk. Furthermore, components like piers and shear keys, inherited from the PSC design, are over-conservative. These findings validate the seismic advantages of the lightweight design of bridge superstructures.

作者提出的热轧型钢-超高性能混凝土组合梁桥是一种新型的桥型，可实现50%左右的大幅度减重。这种桥梁类型有望降低地震惯性力和对下部结构的要求。然而，这些相对的地震优势还没有被系统地研究或量化。为了解决这一问题，采用基于增量动力分析的脆性分析方法，对近断层地震动下典型简支式hss - uhpc桥的地震响应进行了分析和量化。为了进行比较，本文以一座传统预应力混凝土（PSC）桥梁为参考。结果表明，HRSS-UHPC桥的上部结构质量减轻了48.23%，显著降低了整体抗震要求，特别是横向抗震要求，并增强了其抗倒塌能力。然而，上层建筑轻量化设计并不能始终如一地改善纵向轴承控制。此外，有效峰值加速度（EPA）被确定为两种桥梁模型的最佳强度度量。此外，HRSS-UHPC桥梁表现出优异的抗震性能和抗倒塌性能，除纵向轴承损伤外，所有结构部件的EPA值中值显著增加。同时，在高损伤状态下，hss - uhpc桥梁的脆弱性向纵向上的轴承损伤转移，增加了脱梁风险。此外，从PSC设计中继承下来的桥墩和剪切键等部件过于保守。这些研究结果验证了桥梁上部结构轻量化设计的抗震优势。

{"title":"Seismic performance of simply supported hot rolled shape steel–UHPC composite girder bridges under near-fault ground motions","authors":"Xiangcheng Meng , Haidong Wang , Suiwen Wu , Guang Chen , Xudong Shao , Junfei Huang","doi":"10.1016/j.soildyn.2025.110075","DOIUrl":"10.1016/j.soildyn.2025.110075","url":null,"abstract":"<div><div>The hot rolled shape steel (HRSS)–ultra high performance concrete (UHPC) composite girder bridge proposed by the authors is a novel bridge type, which can achieve a substantial weight reduction of about 50 %. This bridge type is expected to lower seismic inertial forces and demands on the substructure. However, these relative seismic advantages have not been systematically investigated or quantified. To address this gap, the seismic response of a typical simply supported HRSS-UHPC bridge is analyzed and quantified under near-fault ground motions using Incremental Dynamic Analysis-based fragility analysis. For comparison purpose, a conventional prestressed concrete (PSC) bridge is taken a reference. Results reveal that the HRSS-UHPC bridge's reduced superstructure mass (48.23 % lighter) significantly lowers overall seismic demands, particularly in the transverse direction, and enhances its collapse resistance. However, superstructure lightweight design does not consistently improve longitudinal bearing control. In addition, Effective Peak Acceleration (EPA) is identified as the optimal intensity measure for both bridge models. Moreover, the HRSS-UHPC bridge demonstrates superior seismic performance and collapse resistance, as evidenced by a significant increase in median EPA values for all structural components except for the bearing damage in the longitudinal direction. Meanwhile, the vulnerability of HRSS-UHPC bridge shifts to the bearing damage in the longitudinal direction at higher damage states, increasing girder unseating risk. Furthermore, components like piers and shear keys, inherited from the PSC design, are over-conservative. These findings validate the seismic advantages of the lightweight design of bridge superstructures.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110075"},"PeriodicalIF":4.6,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel seismic Dam Damage Intensity scale and empirical models for predicting seismically induced damages in embankment dams 堤防地震损伤烈度的新尺度与经验模型

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-05 DOI: 10.1016/j.soildyn.2025.110079

P. Anbazhagan, Surya Prakash

Earthquakes pose significant risks to dam safety and jeopardize lives. Current damage assessment methods lack a standardized scale for classifying seismic damage to embankment dams, and the Modified Mercalli Intensity (MMI) scale falls short in addressing the complexities of dam damage. This study introduces: (1) a novel Dam Damage Intensity (DDI) scale, specifically designed to quantify earthquake-induced damage to embankment dams, and (2) novel empirical DDI predictive models that integrate seismic parameters: magnitude (M_w) and hypocentral distance (R_hyp) with dam characteristics: height (H_D), age (A_D), and dam type (DT). The DDI scale classifies damage into five levels, from minor (1) to complete failure (5). Based on the analysed dataset of 109 dams affected by 16 earthquakes, potential seismic damage is associated with M_w ≥ 6.0 and R_hyp ≤ 250 km. Four functional forms of DDI predictive models were evaluated: two based on modified Intensity Prediction Equations (IPE) (Models 3 & 4), one from modified Ground Motion Prediction Equations (Model 2), and one from a modified dam crest settlement model (Model 1). IPE models consistently outperformed the others, achieving the highest R² (≈0.62), lowest errors (MSE = 0.79, RMSE = 0.89, MAE = 0.75), and minimal log-likelihood value (1.300–1.302), and exhibited consistent predictive performance under repeated out-of-sample validation. Sensitivity analysis revealed that R_hyp and H_D are the most influential seismic and dam parameters respectively, contributing to DDI predictions. DDI scale and predictive models offer a reliable tool for preliminary damage assessment for embankment dams in earthquake-prone regions.

地震对大坝安全构成重大威胁，危及生命安全。目前的损伤评估方法缺乏对堤防地震损伤进行分类的标准化尺度，修正Mercalli烈度（MMI）尺度在处理大坝损伤的复杂性方面存在不足。本研究介绍：(1)一种新的大坝损伤强度（DDI）量表，专门用于量化地震对堤防大坝的损伤；(2)一种新的经验DDI预测模型，该模型将地震参数：震级（Mw）和震源距离（Rhyp）与大坝特征：高度（HD）、年龄（AD）和大坝类型（DT）结合起来。DDI量表将损坏分为五个级别，从轻微(1)到完全损坏(5)。基于16次地震影响的109座大坝的分析数据，潜在震害与Mw≥6.0，Rhyp≤250 km相关。评估了四种DDI预测模型的功能形式：两种基于修正的强度预测方程（IPE）（模型3 & 4），一种基于修正的地震动预测方程（模型2），一种基于修正的坝顶沉降模型（模型1）。IPE模型始终优于其他模型，达到最高的R2(≈0.62)，最低的误差（MSE = 0.79, RMSE = 0.89, MAE = 0.75）和最小的对数似然值（1.300-1.302），并且在重复的样本外验证中表现出一致的预测性能。敏感性分析表明，Rhyp和HD分别是影响最大的地震和大坝参数，有助于预测DDI。DDI尺度和预测模型为地震易发区堤防大坝的初步损伤评估提供了可靠的工具。

{"title":"Novel seismic Dam Damage Intensity scale and empirical models for predicting seismically induced damages in embankment dams","authors":"P. Anbazhagan, Surya Prakash","doi":"10.1016/j.soildyn.2025.110079","DOIUrl":"10.1016/j.soildyn.2025.110079","url":null,"abstract":"<div><div>Earthquakes pose significant risks to dam safety and jeopardize lives. Current damage assessment methods lack a standardized scale for classifying seismic damage to embankment dams, and the Modified Mercalli Intensity (MMI) scale falls short in addressing the complexities of dam damage. This study introduces: (1) a novel Dam Damage Intensity (DDI) scale, specifically designed to quantify earthquake-induced damage to embankment dams, and (2) novel empirical DDI predictive models that integrate seismic parameters: magnitude (M<sub>w</sub>) and hypocentral distance (R<sub>hyp</sub>) with dam characteristics: height (H<sub>D</sub>), age (A<sub>D</sub>), and dam type (DT). The DDI scale classifies damage into five levels, from minor (1) to complete failure (5). Based on the analysed dataset of 109 dams affected by 16 earthquakes, potential seismic damage is associated with M<sub>w</sub> ≥ 6.0 and R<sub>hyp</sub> ≤ 250 km. Four functional forms of DDI predictive models were evaluated: two based on modified Intensity Prediction Equations (IPE) (Models 3 & 4), one from modified Ground Motion Prediction Equations (Model 2), and one from a modified dam crest settlement model (Model 1). IPE models consistently outperformed the others, achieving the highest R<sup>2</sup> (≈0.62), lowest errors (MSE = 0.79, RMSE = 0.89, MAE = 0.75), and minimal log-likelihood value (1.300–1.302), and exhibited consistent predictive performance under repeated out-of-sample validation. Sensitivity analysis revealed that R<sub>hyp</sub> and H<sub>D</sub> are the most influential seismic and dam parameters respectively, contributing to DDI predictions. DDI scale and predictive models offer a reliable tool for preliminary damage assessment for embankment dams in earthquake-prone regions.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110079"},"PeriodicalIF":4.6,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic response analysis of underground structures considering soil spatial variability under different site classes 考虑土壤空间变异性的地下结构在不同场地类型下的地震反应分析

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-05 DOI: 10.1016/j.soildyn.2025.110081

Wenhao Zhang , Pinghe Ni , Mi Zhao , Xiuli Du , M. Hesham El Naggar

Site conditions represent a critical factor influencing the performance and safety of underground structures. Therefore, quantifying the impact of soil spatial variability on seismic response is essential in performance-based seismic design. This study integrates random field theory with statistical analysis. The Karhunen–Loève (K–L) expansion is used to construct spatially variable random fields of soil parameters, which are then employed to evaluate the uncertainty in the seismic response of underground structures under different site conditions. The primary focus of this study is to quantify how soil spatial variability modifies the dispersion and uncertainty of seismic responses across various site types. Site I (hard soil) exhibits the least dispersion with relatively stable seismic performance. Meanwhile, the spatial variability of soil parameters critically influences the response of underground structures in Sites II (medium hard soil) and III (medium soft soil). Site II demonstrates distinct variability across different seismic intensities, and the probability that the inter-story displacement under random-field conditions exceeds the deterministic result is greater than 50 %, leading to a significant increase in displacement demands. Under strong shaking, site II experiences the most pronounced deterioration in performance, leading to an increased risk of collapse. Site III demonstrates stronger nonlinear site effects, especially under low-intensity earthquakes; the response is characterized by great uncertainty and dispersion. Relying solely on deterministic analyses may lead to overestimation of structural performance. Considering site conditions and soil spatial variability is essential for improving the seismic safety and reliability of underground structures.

场地条件是影响地下结构性能和安全的关键因素。因此，在基于性能的抗震设计中，量化土壤空间变异性对地震反应的影响是必不可少的。本研究将随机场理论与统计分析相结合。利用karhunen - lo (K-L)展开构造土体参数的空间可变随机场，并利用该随机场来评价不同场地条件下地下结构地震反应的不确定性。本研究的主要重点是量化土壤空间变异性如何改变不同场地类型地震反应的分散性和不确定性。场地1（硬土）分散性最小，抗震性能相对稳定。同时，场地II（中硬土）和III（中软土）土壤参数的空间变异性对地下结构的响应具有重要影响。站点II在不同地震烈度下表现出明显的变异性，随机场下层间位移超过确定性结果的概率大于50%，导致位移需求显著增加。在强烈的震动下，site II的性能恶化最为明显，导致倒塌的风险增加。站点III表现出较强的非线性站点效应，特别是在低烈度地震下；该响应具有很大的不确定性和分散性。仅仅依靠确定性分析可能会导致对结构性能的高估。考虑场地条件和土壤空间变异性是提高地下结构抗震安全可靠度的必要条件。

{"title":"Seismic response analysis of underground structures considering soil spatial variability under different site classes","authors":"Wenhao Zhang , Pinghe Ni , Mi Zhao , Xiuli Du , M. Hesham El Naggar","doi":"10.1016/j.soildyn.2025.110081","DOIUrl":"10.1016/j.soildyn.2025.110081","url":null,"abstract":"<div><div>Site conditions represent a critical factor influencing the performance and safety of underground structures. Therefore, quantifying the impact of soil spatial variability on seismic response is essential in performance-based seismic design. This study integrates random field theory with statistical analysis. The Karhunen–Loève (K–L) expansion is used to construct spatially variable random fields of soil parameters, which are then employed to evaluate the uncertainty in the seismic response of underground structures under different site conditions. The primary focus of this study is to quantify how soil spatial variability modifies the dispersion and uncertainty of seismic responses across various site types. Site I (hard soil) exhibits the least dispersion with relatively stable seismic performance. Meanwhile, the spatial variability of soil parameters critically influences the response of underground structures in Sites II (medium hard soil) and III (medium soft soil). Site II demonstrates distinct variability across different seismic intensities, and the probability that the inter-story displacement under random-field conditions exceeds the deterministic result is greater than 50 %, leading to a significant increase in displacement demands. Under strong shaking, site II experiences the most pronounced deterioration in performance, leading to an increased risk of collapse. Site III demonstrates stronger nonlinear site effects, especially under low-intensity earthquakes; the response is characterized by great uncertainty and dispersion. Relying solely on deterministic analyses may lead to overestimation of structural performance. Considering site conditions and soil spatial variability is essential for improving the seismic safety and reliability of underground structures.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110081"},"PeriodicalIF":4.6,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced earthquake occurrence time prediction: A hybrid LSTM-Kalman Filter approach 增强地震发生时间预测：一种混合LSTM-Kalman滤波方法

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-05 DOI: 10.1016/j.soildyn.2025.110064

Wahyu Sukestyastama Putra , Sunarno , I Wayan Mustika

Complex temporal patterns and noisy nature of seismic data persistently challenge researchers seeking to predict earthquake timing with high accuracy. Existing deep learning methods often suffer from error accumulation in sequential predictions and lack effective mechanisms for dynamic adjustment. This research introduces an integrated methodology combining Long Short-Term Memory (LSTM) networks with Kalman filtering to improve the precision and reliability of earthquake timestamp predictions. By combining LSTM’s proficiency in identifying long-term temporal correlations with Kalman filter’s iterative updating mechanism, our approach achieves successive improvement in prediction accuracy through real-time error utilization. Evaluation on century-scale seismic datasets from Japan and Java demonstrates that the hybrid approach significantly outperforms a conventional LSTM model, reducing the Mean Absolute Error by 66%–72% and the Root Mean Square Error by 68%–70%. The model achieved R-squared values above 0.9997 for both regions and maintained consistent performance in cross-regional tests. Analysis of the Kalman Gain showed stable convergence between 0.56 and 0.58, indicating the integration of the model’s predictions with new observational data. These results confirm that integrating statistical filtering with deep learning increases the reliability of temporal earthquake prediction, showing strong potential for improving Earthquake Early Warning Systems (EWS).

复杂的时间模式和地震数据的噪声特性一直给寻求高精度预测地震时间的研究人员带来挑战。现有的深度学习方法往往存在序列预测误差积累的问题，缺乏有效的动态调整机制。本文提出了一种长短期记忆网络与卡尔曼滤波相结合的综合方法，以提高地震时间戳预测的精度和可靠性。该方法将LSTM识别长期时间相关性的能力与卡尔曼滤波的迭代更新机制相结合，通过实时误差利用实现预测精度的连续提高。对日本和Java的世纪尺度地震数据集的评估表明，混合方法明显优于传统的LSTM模型，平均绝对误差降低了66%-72%，均方根误差降低了68%-70%。该模型在两个区域的r平方值均达到0.9997以上，在跨区域测试中性能保持一致。卡尔曼增益分析显示，在0.56 ~ 0.58之间稳定收敛，表明模型的预测与新的观测数据相结合。这些结果证实，将统计过滤与深度学习相结合可以提高时间地震预测的可靠性，显示出改善地震预警系统（EWS）的强大潜力。

{"title":"Enhanced earthquake occurrence time prediction: A hybrid LSTM-Kalman Filter approach","authors":"Wahyu Sukestyastama Putra , Sunarno , I Wayan Mustika","doi":"10.1016/j.soildyn.2025.110064","DOIUrl":"10.1016/j.soildyn.2025.110064","url":null,"abstract":"<div><div>Complex temporal patterns and noisy nature of seismic data persistently challenge researchers seeking to predict earthquake timing with high accuracy. Existing deep learning methods often suffer from error accumulation in sequential predictions and lack effective mechanisms for dynamic adjustment. This research introduces an integrated methodology combining Long Short-Term Memory (LSTM) networks with Kalman filtering to improve the precision and reliability of earthquake timestamp predictions. By combining LSTM’s proficiency in identifying long-term temporal correlations with Kalman filter’s iterative updating mechanism, our approach achieves successive improvement in prediction accuracy through real-time error utilization. Evaluation on century-scale seismic datasets from Japan and Java demonstrates that the hybrid approach significantly outperforms a conventional LSTM model, reducing the Mean Absolute Error by 66%–72% and the Root Mean Square Error by 68%–70%. The model achieved R-squared values above 0.9997 for both regions and maintained consistent performance in cross-regional tests. Analysis of the Kalman Gain showed stable convergence between 0.56 and 0.58, indicating the integration of the model’s predictions with new observational data. These results confirm that integrating statistical filtering with deep learning increases the reliability of temporal earthquake prediction, showing strong potential for improving Earthquake Early Warning Systems (EWS).</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110064"},"PeriodicalIF":4.6,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic fragility assessment of the crane and pile-supported wharf system under liquefaction conditions considering IMs optimization and damage characteristics 考虑IMs优化和损伤特征的液化条件下起重桩基码头体系地震易损性评价

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-05 DOI: 10.1016/j.soildyn.2026.110095

Yi Zhang , Xiaoyu Zhang , Xiaofeng Man

The seismic fragility assessment of the crane and pile-supported wharf system under liquefaction conditions remains challenging, primarily due to challenges in selecting representative ground motion intensity measures (IMs) and defining quantitative, system-level damage states. This study develops an integrated fragility assessment framework that addresses both challenges. First, a high-fidelity three-dimensional finite element model, validated against the centrifuge shaking table experiment, is used to simulate the system's response under an ensemble of 100 ground motions. A two-stage fuzzy comprehensive evaluation method, considering five optimal criteria across four engineering demand parameters (EDPs), is employed to identify the optimal IM. The results demonstrate that peak ground velocity (PGV) is superior to traditional peak ground acceleration (PGA) for characterizing the system's seismic demand under soil liquefaction. Second, the Hilbert-Huang Transform is applied to the deck displacement response to extract damage characteristics in the frequency domain. A novel Marginal Spectrum Assurance Criterion (MSAC) is proposed, establishing clear thresholds for serviceable, repairable, and near-collapse damage states. Finally, probabilistic seismic fragility curves are derived using the optimal IM (PGV) and the new damage thresholds. Comparative analysis shows that the PGV-based fragility model yields a more efficient demand estimation with less uncertainty than the PGA-based model. The proposed framework provides a more reliable tool for performance-based seismic safety assessment of coastal port engineering in liquefiable ground.

液化条件下起重机和桩支撑码头系统的地震易碎性评估仍然具有挑战性，主要是因为在选择具有代表性的地震动强度测量（IMs）和定义定量的系统级损伤状态方面存在挑战。本研究开发了一个综合脆弱性评估框架，以应对这两个挑战。首先，建立了一个高保真三维有限元模型，并通过离心机振动台实验验证，模拟了系统在100次地面运动下的响应。采用两阶段模糊综合评判法，综合考虑4个工程需求参数的5个最优准则，确定最优IM。结果表明，峰值地速度（PGV）优于传统的峰值地加速度（PGA）来表征土体液化条件下的地震需求。其次，对桥面位移响应进行Hilbert-Huang变换，在频域提取损伤特征；提出了一种新的边际频谱保证准则（MSAC），为可使用、可修复和接近崩溃的损坏状态建立了明确的阈值。最后，利用最优损伤阈值（PGV）和新的损伤阈值，导出了地震易损性概率曲线。对比分析表明，与基于pgv的脆弱性模型相比，基于pgv的脆弱性模型具有更高的需求估计效率和更小的不确定性。该框架为沿海港口工程液化地基的抗震安全性能评价提供了一种更为可靠的工具。

{"title":"Seismic fragility assessment of the crane and pile-supported wharf system under liquefaction conditions considering IMs optimization and damage characteristics","authors":"Yi Zhang , Xiaoyu Zhang , Xiaofeng Man","doi":"10.1016/j.soildyn.2026.110095","DOIUrl":"10.1016/j.soildyn.2026.110095","url":null,"abstract":"<div><div>The seismic fragility assessment of the crane and pile-supported wharf system under liquefaction conditions remains challenging, primarily due to challenges in selecting representative ground motion intensity measures (IMs) and defining quantitative, system-level damage states. This study develops an integrated fragility assessment framework that addresses both challenges. First, a high-fidelity three-dimensional finite element model, validated against the centrifuge shaking table experiment, is used to simulate the system's response under an ensemble of 100 ground motions. A two-stage fuzzy comprehensive evaluation method, considering five optimal criteria across four engineering demand parameters (EDPs), is employed to identify the optimal IM. The results demonstrate that peak ground velocity (PGV) is superior to traditional peak ground acceleration (PGA) for characterizing the system's seismic demand under soil liquefaction. Second, the Hilbert-Huang Transform is applied to the deck displacement response to extract damage characteristics in the frequency domain. A novel Marginal Spectrum Assurance Criterion (MSAC) is proposed, establishing clear thresholds for serviceable, repairable, and near-collapse damage states. Finally, probabilistic seismic fragility curves are derived using the optimal IM (PGV) and the new damage thresholds. Comparative analysis shows that the PGV-based fragility model yields a more efficient demand estimation with less uncertainty than the PGA-based model. The proposed framework provides a more reliable tool for performance-based seismic safety assessment of coastal port engineering in liquefiable ground.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110095"},"PeriodicalIF":4.6,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamic interaction and damage characteristics of multi-anchor circular piles-landslide system: Shaking table test 多锚杆圆桩-滑坡体系动力相互作用及破坏特性：振动台试验

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-04 DOI: 10.1016/j.soildyn.2025.110059

Hong Wei , Zhigang Ma , Zhigang Tao , Honggang Wu , Manchao He

Although Multi-Anchor Circular Piles (MACP) are increasingly employed to stabilize large-scale landslides and high slopes, their dynamic interaction and damage behavior under seismic loading remain poorly understood. In this study, a series of shaking table tests were carried out on the MACP-landslide system. The time domain and frequency domain data were analyzed to investigate the instability mechanisms of the landslide, as well as the damage evolution and dynamic mitigation mechanisms of the MACP. A seismic fragility analysis model based on structural response criteria was established. The results show that elevation and topography amplify the Fourier spectrum, and the low-frequency (5–20 Hz) and high-frequency (48–52 Hz) components of seismic waves trigger the overall and local responses of the sliding mass, respectively. The damage coefficient D, which accounts for the natural frequency parameters of the material, provides a novel technical basis for the safety assessment of the MACP and for the monitoring and early warning of landslides. Under multiple levels of seismic excitation, the MACP tends to experience slight damage, while the probabilities of moderate and severe damage remain below 80.00 % and 40.00 %, respectively. The prestress applied by the anchor cables imposes active constraints on the slope, facilitating the transition of the sliding mass from tensile to compressive stress, thereby significantly enhancing the seismic performance of the MACP.

虽然多锚圆桩（MACP）越来越多地用于稳定大型滑坡和高边坡，但它们在地震荷载下的动力相互作用和破坏行为仍然知之甚少。本研究对macp -滑坡体系进行了一系列的振动台试验。通过对时域和频域数据的分析，探讨了滑坡失稳机制，以及MACP的损伤演化和动态减缓机制。建立了基于结构响应准则的地震易损性分析模型。结果表明，高程和地形放大了傅立叶谱，地震波的低频（5 ~ 20 Hz）和高频（48 ~ 52 Hz）分量分别触发滑动体的整体和局部响应。考虑材料固有频率参数的损伤系数D，为混凝土路基的安全评价和滑坡监测预警提供了新的技术依据。在多级地震激励下，MACP倾向于发生轻微破坏，而中度和重度破坏的概率分别低于80.00 %和40.00%。锚索施加的预应力对边坡施加主动约束，促进滑动质量从拉应力到压应力的转变，从而显著提高了MACP的抗震性能。

{"title":"Dynamic interaction and damage characteristics of multi-anchor circular piles-landslide system: Shaking table test","authors":"Hong Wei , Zhigang Ma , Zhigang Tao , Honggang Wu , Manchao He","doi":"10.1016/j.soildyn.2025.110059","DOIUrl":"10.1016/j.soildyn.2025.110059","url":null,"abstract":"<div><div>Although Multi-Anchor Circular Piles (MACP) are increasingly employed to stabilize large-scale landslides and high slopes, their dynamic interaction and damage behavior under seismic loading remain poorly understood. In this study, a series of shaking table tests were carried out on the MACP-landslide system. The time domain and frequency domain data were analyzed to investigate the instability mechanisms of the landslide, as well as the damage evolution and dynamic mitigation mechanisms of the MACP. A seismic fragility analysis model based on structural response criteria was established. The results show that elevation and topography amplify the Fourier spectrum, and the low-frequency (5–20 Hz) and high-frequency (48–52 Hz) components of seismic waves trigger the overall and local responses of the sliding mass, respectively. The damage coefficient <em>D</em>, which accounts for the natural frequency parameters of the material, provides a novel technical basis for the safety assessment of the MACP and for the monitoring and early warning of landslides. Under multiple levels of seismic excitation, the MACP tends to experience slight damage, while the probabilities of moderate and severe damage remain below 80.00 % and 40.00 %, respectively. The prestress applied by the anchor cables imposes active constraints on the slope, facilitating the transition of the sliding mass from tensile to compressive stress, thereby significantly enhancing the seismic performance of the MACP.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110059"},"PeriodicalIF":4.6,"publicationDate":"2026-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimentally-calibrated numerical investigation of soil stiffness, permeability, bucket size, and damping effects on seismic response of offshore wind turbine foundations 土壤刚度、透气性、桶型尺寸和阻尼对海上风力发电机基础地震响应影响的实验标定数值研究

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-03 DOI: 10.1016/j.soildyn.2025.110043

Muhammad Zayed , Athul Prabhakaran , Zhijian Qiu , Yewei Zheng , Ahmed Elgamal

A nonlinear finite element (FE) model calibrated using shake table testing data is used to simulate seismic response of utility-scale offshore wind turbine (OWT) bucket foundation. A parametric study is conducted to investigate influence of i) soil stiffness, ii) soil permeability, iii) bucket size, and iv) structural viscous damping on the system response, with special attention to foundation rotation, permanent deformation and pore pressure build-up characteristics. The results suggest that: i) the near field pore water pressure build-up and bucket rotation are correlated, ii) lower soil permeability results in larger rotation due to the higher near field pore water pressure build-up, iii) permanent bucket rotation reaches a maximum and a minimum at the lower and upper bounds of soil permeability, respectively, corresponding to fully drained and undrained conditions, iv) the difference in permanent bucket rotation between undrained and drained conditions tends to decrease with increasing soil stiffness, v) within the range of investigated scenarios, a linear correlation can be expressed between the OWT fundamental frequency and the permanent bucket rotation, with diminishing effect of soil stiffness at the larger bucket sizes (i.e., stiffer foundation). In addition, it was noted that viscous damping at higher frequencies can have a significant impact on bucket moment-rotation response. The findings provide a valuable extension to existing seismic design tools and contribute towards developing performance-based seismic design guidelines for bucket foundation OWT.

采用振动台试验数据标定的非线性有限元模型，模拟了公用规模海上风力发电机组桶形基础的地震响应。通过参数化研究，考察i)土刚度、ii)土渗透性、iii)铲斗尺寸和iv)结构粘性阻尼对系统响应的影响，并特别关注基础旋转、永久变形和孔隙压力累积特性。结果表明：(1)近场孔隙水压力累积与斗式旋转相关；(2)土壤渗透率越低，由于近场孔隙水压力累积越高，导致斗式旋转越大；(3)在完全排水和不排水条件下，永久斗式旋转在土壤渗透率下界和上界分别达到最大值和最小值；iv)不排水和排水条件下永久桶转动的差异随着土体刚度的增加而减小；v)在所研究的情景范围内，OWT基频与永久桶转动之间呈线性相关关系，且土体刚度对桶尺寸越大（即基础越硬）的影响越小。此外，研究人员还指出，在较高频率下，粘性阻尼会对铲斗的矩转响应产生显著影响。这些发现为现有的地震设计工具提供了有价值的扩展，并有助于制定基于性能的桶形基础OWT地震设计指南。

{"title":"Experimentally-calibrated numerical investigation of soil stiffness, permeability, bucket size, and damping effects on seismic response of offshore wind turbine foundations","authors":"Muhammad Zayed , Athul Prabhakaran , Zhijian Qiu , Yewei Zheng , Ahmed Elgamal","doi":"10.1016/j.soildyn.2025.110043","DOIUrl":"10.1016/j.soildyn.2025.110043","url":null,"abstract":"<div><div>A nonlinear finite element (FE) model calibrated using shake table testing data is used to simulate seismic response of utility-scale offshore wind turbine (OWT) bucket foundation. A parametric study is conducted to investigate influence of i) soil stiffness, ii) soil permeability, iii) bucket size, and iv) structural viscous damping on the system response, with special attention to foundation rotation, permanent deformation and pore pressure build-up characteristics. The results suggest that: i) the near field pore water pressure build-up and bucket rotation are correlated, ii) lower soil permeability results in larger rotation due to the higher near field pore water pressure build-up, iii) permanent bucket rotation reaches a maximum and a minimum at the lower and upper bounds of soil permeability, respectively, corresponding to fully drained and undrained conditions, iv) the difference in permanent bucket rotation between undrained and drained conditions tends to decrease with increasing soil stiffness, v) within the range of investigated scenarios, a linear correlation can be expressed between the OWT fundamental frequency and the permanent bucket rotation, with diminishing effect of soil stiffness at the larger bucket sizes (i.e., stiffer foundation). In addition, it was noted that viscous damping at higher frequencies can have a significant impact on bucket moment-rotation response. The findings provide a valuable extension to existing seismic design tools and contribute towards developing performance-based seismic design guidelines for bucket foundation OWT.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110043"},"PeriodicalIF":4.6,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel method for efficient generation of 3D large-scale random fields via MEOLE 一种利用MEOLE高效生成三维大规模随机场的新方法

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-03 DOI: 10.1016/j.soildyn.2025.110085

Yuliang Chen , Rui Pang , Dianjun Zhu , Bin Xu

In the field of slope engineering, when conducting research on large-scale three-dimensional (3D) random fields (RFs) such as steep slopes, problems such as huge computational load and low computational efficiency are often encountered. To address this, this study proposes a new method based on modified expansion optimal linear estimation method (MEOLE) for efficiently simulating 3D large-scale RF, significantly improving the computational efficiency. This method takes advantage of the separable autocorrelation function (ACF), transforming the 3D spatial correlation matrix into a combination of two-dimensional (2D) and one-dimensional (1D) correlation matrices, which greatly reduces the computational load and markedly enhances computational efficiency. Furthermore, this study incorporates 3D rotational anisotropy, allowing MEOLE to realistically simulate inclined layered slopes and expanding the applicability of MEOLE. Subsequently, the reliability of MEOLE is verified through the static reliability analysis of 3D slopes. Finally, in seismic scenarios, this study conducted a reliability analysis of slopes under three different seismic spectrum characteristics, considering the 3D rotational anisotropy of the RF. The results indicate that in dynamic reliability analysis, special attention should be paid to slopes with rotation angles between 0 and 30°, highlighting the significant impact of soil spatial variability (SV) on seismic performance evaluation.

在边坡工程领域，在对陡坡等大尺度三维随机场进行研究时，经常会遇到计算量大、计算效率低等问题。针对这一问题，本研究提出了一种基于改进扩展最优线性估计方法（MEOLE）的三维大尺度射频高效模拟新方法，显著提高了计算效率。该方法利用可分离自相关函数（ACF），将三维空间相关矩阵转化为二维（2D）和一维（1D）相关矩阵的组合，大大降低了计算量，显著提高了计算效率。此外，该研究结合了三维旋转各向异性，使MEOLE能够真实地模拟倾斜层状边坡，扩大了MEOLE的适用性。随后，通过三维边坡静力可靠度分析验证了MEOLE的可靠性。最后，在地震场景下，考虑RF的三维旋转各向异性，对三种不同地震谱特征下的边坡进行了可靠度分析。结果表明，在动力可靠度分析中，应特别注意旋转角度在0 ~ 30°之间的边坡，突出了土壤空间变异性对抗震性能评价的重要影响。

{"title":"A novel method for efficient generation of 3D large-scale random fields via MEOLE","authors":"Yuliang Chen , Rui Pang , Dianjun Zhu , Bin Xu","doi":"10.1016/j.soildyn.2025.110085","DOIUrl":"10.1016/j.soildyn.2025.110085","url":null,"abstract":"<div><div>In the field of slope engineering, when conducting research on large-scale three-dimensional (3D) random fields (RFs) such as steep slopes, problems such as huge computational load and low computational efficiency are often encountered. To address this, this study proposes a new method based on modified expansion optimal linear estimation method (MEOLE) for efficiently simulating 3D large-scale RF, significantly improving the computational efficiency. This method takes advantage of the separable autocorrelation function (ACF), transforming the 3D spatial correlation matrix into a combination of two-dimensional (2D) and one-dimensional (1D) correlation matrices, which greatly reduces the computational load and markedly enhances computational efficiency. Furthermore, this study incorporates 3D rotational anisotropy, allowing MEOLE to realistically simulate inclined layered slopes and expanding the applicability of MEOLE. Subsequently, the reliability of MEOLE is verified through the static reliability analysis of 3D slopes. Finally, in seismic scenarios, this study conducted a reliability analysis of slopes under three different seismic spectrum characteristics, considering the 3D rotational anisotropy of the RF. The results indicate that in dynamic reliability analysis, special attention should be paid to slopes with rotation angles between 0 and 30°, highlighting the significant impact of soil spatial variability (SV) on seismic performance evaluation.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110085"},"PeriodicalIF":4.6,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vibration mitigation for high-rise buildings by a single-sided vibro-impact bistable nonlinear energy sink 单侧振动冲击双稳态非线性能量汇对高层建筑的减振

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-01-03 DOI: 10.1016/j.soildyn.2025.110083

Jiang Li, Bo-Xun Sun, Gui-Lan Yu

This paper proposes a single-sided vibro-impact bistable nonlinear energy sink (SSVI-BNES), which combines a single-sided vibro-impact mechanism with bistable characteristics. The aim is to provide an effective vibration control device for mitigating seismic responses in high-rise buildings while balancing multiple factors from a practical perspective, such as the root mean square (RMS) displacement of the top story, small stiffness, short stroke, and low damping. This innovative framework bridges high-performance seismic control with engineering feasibility, significantly enhancing the applicability of SSVI-BNES in practical scenarios. Numerical simulations demonstrate that SSVI-BNES effectively reduce the seismic response of high-rise buildings and exhibits remarkable robustness to variations in structural stiffness and input energy levels. Compared to bistable nonlinear energy sinks (BNES) and tuned mass dampers (TMD), the SSVI-BNES demonstrates superior performance with minimal stroke and damping requirements, indicating its potential as a practically efficient solution.

本文提出了一种单面振动冲击双稳态非线性能量汇（SSVI-BNES），它将单面振动冲击机理与双稳态特性相结合。旨在从实际角度兼顾顶层均方根位移、小刚度、短行程、低阻尼等多种因素，为高层建筑抗震提供一种有效的减振装置。这种创新的框架将高性能抗震控制与工程可行性相结合，显著提高了SSVI-BNES在实际场景中的适用性。数值模拟结果表明，SSVI-BNES有效降低了高层建筑的地震响应，对结构刚度和输入能级的变化具有显著的鲁棒性。与双稳态非线性能量汇（BNES）和调谐质量阻尼器（TMD）相比，SSVI-BNES在最小冲程和阻尼要求下表现出卓越的性能，表明其作为一种实际有效的解决方案的潜力。

{"title":"Vibration mitigation for high-rise buildings by a single-sided vibro-impact bistable nonlinear energy sink","authors":"Jiang Li, Bo-Xun Sun, Gui-Lan Yu","doi":"10.1016/j.soildyn.2025.110083","DOIUrl":"10.1016/j.soildyn.2025.110083","url":null,"abstract":"<div><div>This paper proposes a single-sided vibro-impact bistable nonlinear energy sink (SSVI-BNES), which combines a single-sided vibro-impact mechanism with bistable characteristics. The aim is to provide an effective vibration control device for mitigating seismic responses in high-rise buildings while balancing multiple factors from a practical perspective, such as the root mean square (RMS) displacement of the top story, small stiffness, short stroke, and low damping. This innovative framework bridges high-performance seismic control with engineering feasibility, significantly enhancing the applicability of SSVI-BNES in practical scenarios. Numerical simulations demonstrate that SSVI-BNES effectively reduce the seismic response of high-rise buildings and exhibits remarkable robustness to variations in structural stiffness and input energy levels. Compared to bistable nonlinear energy sinks (BNES) and tuned mass dampers (TMD), the SSVI-BNES demonstrates superior performance with minimal stroke and damping requirements, indicating its potential as a practically efficient solution.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"203 ","pages":"Article 110083"},"PeriodicalIF":4.6,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0