Soil Dynamics and Earthquake Engineering最新文献_第4页

Study on longitudinal seismic fragility and resilience of shield tunnels crossing soil–rock interfaces 跨土-岩界面盾构隧道纵向地震易损性和回弹性研究

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-05-01 Epub Date: 2026-02-03 DOI: 10.1016/j.soildyn.2026.110147

Tianwei Wang , Chuanfeng Zheng , Yongping Yu , Haisong Luo

To advance the understanding and application of seismic resilience assessment for tunnels in complex geological conditions, this study investigates the longitudinal seismic fragility and resilience of shield tunnels crossing soil–rock interfaces. The seismic fragility of typical tunnels in soil–rock transition zones was analysed using the generalised response displacement method and incremental dynamic analysis. By combining fragility curves with economic loss and recovery models, the post-earthquake economic loss and seismic resilience of the tunnels were evaluated. Parametric studies were also conducted to examine the influence of key factors. The results show that the soil–rock interface amplifies seismic effects and significantly increases tunnel fragility, especially in the interface and soil zones. Near-fault pulse-type ground motions further raise the variability of seismic responses and reduce tunnel performance. Economic loss depends largely on fragility, with higher fragility leading to greater losses. Seismic resilience is influenced by both fragility and recovery capacity; greater fragility results in lower residual performance, longer recovery time and reduced resilience. Among the factors considered, the soil–rock stiffness ratio and tunnel burial depth have the strongest influence on economic loss and resilience. Under a peak ground acceleration (PGA) of 0.6 g, both the soil–rock stiffness ratio and the burial depth significantly influence system. A 7.3-fold increase in the former causes economic loss to expand by 20.46 times and the resilience index (R) to decrease by 0.0825. In contrast, a 20-m increase in the latter leads to a 7.38-fold expansion in economic loss and a 0.0004 reduction in R.

为了提高对复杂地质条件下隧道地震回弹性评价的认识和应用，本研究对穿越土-岩界面的盾构隧道的纵向地震易损性和回弹性进行了研究。采用广义响应位移法和增量动力分析法对典型土岩过渡带隧道的地震易损性进行了分析。将易损性曲线与经济损失和恢复模型相结合，对隧道的震后经济损失和地震恢复力进行了评价。并进行了参数化研究，以检验关键因素的影响。结果表明，土-岩界面放大了地震效应，显著增加了隧道的脆性，特别是在界面和土区。近断层脉冲型地震动进一步提高了地震反应的变异性，降低了隧道的性能。经济损失在很大程度上取决于脆弱性，脆弱性越高，损失越大。地震恢复力受脆弱性和恢复能力的双重影响；脆性越大，剩余性能越低，恢复时间越长，恢复力越低。其中，土石刚度比和隧道埋深对经济损失和恢复力的影响最大。在峰值地加速度（PGA）为0.6 g时，土-岩刚度比和埋深对系统有显著影响。前者增加7.3倍，经济损失扩大20.46倍，恢复力指数(R)下降0.0825。相比之下，后者每增加20米，经济损失增加7.38倍，R减少0.0004。

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引用次数: 0

Investigation on seismic isolation performance of surface structures based on concrete-rubber layered periodic foundations 混凝土-橡胶层状周期性基础表面结构隔震性能研究

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-05-01 Epub Date: 2026-02-12 DOI: 10.1016/j.soildyn.2026.110185

Guobo Wang , Yangbin Jin , Bu Zhang , Jianning Wang , Xin Liu

Building collapse during earthquakes remains a primary cause of catastrophic losses, underscoring the critical need for enhanced seismic resilience. Research in solid mechanics has revealed that periodic structures can suppress elastic wave propagation within specific frequency ranges, known as band gaps, offering a promising avenue for seismic isolation. This study investigates the seismic isolation performance of a concrete-rubber layered periodic foundation (CRLPF), which comprises alternating concrete and rubber layers, through shaking table tests and numerical simulations. A comparative analysis was conducted between a typical frame structure on a conventional concrete foundation (CF) and one on the proposed CRLPF. A high-fidelity numerical model was developed and validated against experimental results, demonstrating excellent agreement. Subsequent parametric studies revealed that seismic motion characteristics (type and amplitude), the number of rubber layers, and the presence of rubber layers significantly influence the CRLPF's performance. The results demonstrate that the CRLPF effectively attenuates both the acceleration and inter-story drift angle of the superstructure, with maximum reduction rates reaching 34.41% and 17.19%, respectively. This research provides valuable insights and practical guidance for the parameter design and engineering application of layered periodic foundations.

地震期间建筑物倒塌仍然是造成灾难性损失的主要原因，这凸显了加强抗震能力的迫切需要。固体力学研究表明，周期性结构可以抑制弹性波在特定频率范围内的传播，称为带隙，为隔震提供了一条有前途的途径。通过振动台试验和数值模拟研究了混凝土-橡胶交替层状周期性基础（CRLPF）的隔震性能。对传统混凝土基础上的典型框架结构与CRLPF基础上的框架结构进行了对比分析。建立了高保真的数值模型，并与实验结果进行了验证，结果与实验结果吻合良好。随后的参数研究表明，地震运动特征（类型和振幅）、橡胶层数和橡胶层的存在对CRLPF的性能有显著影响。结果表明，CRLPF对上部结构的加速度和层间漂移角均有有效的衰减，最大衰减率分别达到34.41%和17.19%。该研究为层状周期基础的参数设计和工程应用提供了有价值的见解和实践指导。

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引用次数: 0

Enhancing seismic resilience of precast segmental piers using external replaceable ring energy dissipator (ERRED) 外可更换环形消能器增强预制节段墩抗震性能研究

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-04-01 Epub Date: 2026-01-30 DOI: 10.1016/j.soildyn.2026.110133

Rashad Al-Shaebi , Xiaolei Jiao , Ning Li

Precast segmental piers (PSPs) are growing popular in modern bridge construction due to their rapid assembly and efficiency, yet their limited energy dissipation (ED) capacity and seismic resilience restrict deployment in high seismic regions. This study proposes a novel external replaceable ring energy dissipator (ERRED) integrated with PSP (PSP-ERRED) to enhance seismic resilience, enable rapid post-earthquake repair, and provide controlled ED and self-centering performance. Quasi-static cyclic loading tests were conducted on three PSP specimens: one conventional PSP without ERRED (P-NED) and two PSP-ERREDs (P-ERRED-1 and P-ERRED-2, with different steel band connections). The tests evaluated lateral capacity, ED, stiffness, residual displacement, and failure modes. Key results demonstrated that PSP-ERREDs increased lateral load capacity by 35.6–46.7%, ED by 54–78%, and stiffness by 35.5–46.7%, while reducing residual displacement by 74.5–83.2% compared to P-NED at 6% drift ratio. Bolted and unbolted steel band connections exhibited effective and robust mechanical performance in PSP-ERREDs. The ERRED design facilitates structural damage control and post-earthquake repairs, offering a practical and cost-effective solution for resilient bridge infrastructure in seismic zones.

预制节段墩由于其快速组装和高效，在现代桥梁建设中越来越受欢迎，但其有限的耗能能力和抗震弹性限制了在高震区的部署。本研究提出了一种新型的外可更换环形能量耗散器（ERRED）与PSP （PSP-ERRED）集成，以增强地震恢复能力，实现震后快速修复，并提供可控的ED和自定心性能。对3个PSP试件进行了准静态循环加载试验：1个不带ERRED的常规PSP试件（P-NED）和2个PSP-ERRED试件（P-ERRED-1和P-ERRED-2，不同钢带连接方式）。测试评估了横向承载力、ED、刚度、残余位移和破坏模式。关键结果表明，在6%漂移比下，与P-NED相比，psp - erred的横向承载能力提高了35.6% - 46.7%，ED提高了54-78%，刚度提高了35.5-46.7%，剩余位移减少了74.5-83.2%。螺栓连接和非螺栓连接的钢带连接在psp - erred中表现出有效和稳健的力学性能。ERRED设计有助于结构损伤控制和震后修复，为震区弹性桥梁基础设施提供实用且经济的解决方案。

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引用次数: 0

A locally resonant seismic metamaterial with a low-frequency broadband bandgap 具有低频宽带带隙的局部共振地震超材料

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-04-01 Epub Date: 2026-01-28 DOI: 10.1016/j.soildyn.2026.110142

Hongyang Sun , Hong Hai , Wei Wang , Weikai Xu , Shasha Yuan

Earthquakes pose significant risks due to their unpredictability, causing extensive damage to human life, socio-economic structures, and the environment. This has led to the development of earthquake-resistant and mitigation technologies aimed at minimizing structural damage. However, traditional seismic isolation technologies often fall short of meeting seismic resistance standards due to inherent limitations, underscoring the need for innovative seismic solutions. This paper introduces a new seismic metamaterial characterized by locally resonant zero-frequency band gaps. The material consists of a number of steel box-type components buried regularly in the soil with internal oscillators. Through analytical derivation and finite element analysis, it has been established that the upper limit of the seismic metamaterial's zero-frequency band gap coincides with the fundamental frequency of the plate. Additionally, the attenuation of elastic waves in a harmonic state as they pass through the metamaterial is elucidated. Further investigation reveals the band gap generation mechanism and examines the influence of geometric parameters on the metamaterial's band gap. Comprehensive frequency and time domain analyses validate the band gap of this innovative seismic metamaterial. Findings suggest that the metamaterial demonstrates superior performance in creating low-frequency band gaps. Employing straightforward configurations and practical placement strategies, it is possible to achieve extremely low-frequency band gaps within the range of earthquake frequencies.

地震由于其不可预测性而构成重大风险，对人类生活、社会经济结构和环境造成广泛破坏。这导致了旨在尽量减少结构破坏的抗震和减灾技术的发展。然而，由于固有的局限性，传统的隔震技术往往达不到抗震标准，因此需要创新的抗震解决方案。介绍了一种以局部共振零频带隙为特征的新型地震超材料。该材料由许多带内部振荡器的钢盒型组件定期埋在土壤中组成。通过解析推导和有限元分析，确定了地震超材料的零频带隙上限与板的基频重合。此外，还解释了弹性波在谐波状态下通过超材料时的衰减。进一步研究揭示了带隙的产生机理，并考察了几何参数对材料带隙的影响。综合频域和时域分析验证了这种创新的地震超材料的带隙。研究结果表明，该超材料在制造低频带隙方面表现出优异的性能。采用简单的配置和实用的放置策略，可以在地震频率范围内实现极低频带隙。

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引用次数: 0

Characterization of dynamic behavior of clay-gravel mixtures under high cyclic strains in undrained triaxial conditions 不排水三轴条件下高循环应变下粘土-碎石混合料动力特性表征

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.soildyn.2025.110056

Qiming Chen, Shun Wang, Dian-Qing Li, Wenqi Du

This study investigates the variations of strain-dependent shear-modulus reduction and damping for saturated clay-gravel mixtures (CGMs) under varying gravel content (GC) and effective confining pressure (p′). A series of large-scale, strain-controlled undrained cyclic triaxial tests were conducted covering shear strain γ of 0.075–7.5 % and p′ of 400–1400 kPa for multiple GC levels. It is demonstrated that the normalized shear modulus (G/G₀) degrades more rapidly with increasing GC at low p′. In contrast, elevating p′ decelerates this degradation, with effects saturating beyond approximately 900 kPa. The damping ratio (D) evolves through four distinct stages—initial, developing, plateau, and secondary increase—with transitions at high strains shifting to lower γ under elevated p′. Moreover, two piecewise regression models are proposed: Model I (γ < 2.5 %) accurately captures multi-stage damping at moderate strains, while Model II (γ up to 7.5 %) reproduces both the plateau and secondary-increase stages. The best-fit and envelope curves for CGMs are systematically right-shifted comparing with other soil-gravel mixtures, indicating delayed stiffness degradation and a more pronounced damping increase. The derived best-fit and envelope curves suggest practical reference bounds for CGMs over a wide strain range, thereby facilitating advanced dynamic analysis and constitutive model calibration under large cyclic strains.

本文研究了不同含砾量（GC）和有效围压（p’）下饱和粘土-碎石混合料（cgm）应变相关剪切模量折减和阻尼的变化。在剪切应变γ为0.075 ~ 7.5%，p′为400 ~ 1400 kPa的条件下，进行了一系列大型、应变控制的不排水循环三轴试验。结果表明，在低p′时，随着GC的增加，归一化剪切模量（G/G0）的退化速度更快。相比之下，提高p '会减缓这种退化，其影响在大约900 kPa以上达到饱和。阻尼比(D)经历了初始、发展、平台和二次增加四个不同的阶段，在p′升高的情况下，高应变向低γ转变。此外，提出了两个分段回归模型：模型I （γ < 2.5%）准确地捕获了中等应变下的多级阻尼，而模型II （γ高达7.5%）再现了平台和二次增加阶段。与其他土-碎石混合料相比，cgm的最佳拟合曲线和包络曲线有系统的右移，表明刚度退化延迟，阻尼增加更明显。所得的最佳拟合曲线和包络曲线为大应变范围内的cgm提供了实用的参考边界，从而促进了大循环应变下的高级动态分析和本构模型校准。

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引用次数: 0

Robustness analysis of HVSR-derived soil fundamental frequency estimates in an urban seismic network 城市地震台网中基于hvrr的土壤基频估计的鲁棒性分析

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-04-01 Epub Date: 2026-01-14 DOI: 10.1016/j.soildyn.2026.110108

Kaan Hakan Coban , Jordi Díaz , Albert Macau , Helena Seivane , Sara Figueras , Martin Schimmel , Pilar Sánchez-Pastor , Samuel Jorde

Microtremor data acquired using permanent and temporary seismic deployments within the city of Barcelona were used to systematically analyze the robustness of the soil fundamental frequency and horizontal to vertical spectral ratio (HVSR) amplitude estimates, leveraging the long recording period, in the order of several months, available for most of the stations. The analysis considers different time-window lengths, times of day, and seasons of the year. Overall, the results are consistent; however, we identified specific time intervals in which the results, particularly the amplitude of the HVSR peak, deviate significantly from the mean. We have observed that during these intervals, the seismic energy in the microseismic peak is lower than average, due to reduced sea wave activity. Therefore, we interpret that during the periods of calm seas, the HVSR results may be biased because of insufficient seismic energy. The new set of HVSR estimates has been integrated with existing data to obtain an updated map of the soil fundamental frequency in Barcelona, contributing to improved microzonation and seismic risk assessment in the city. Furthermore, we show that the soil fundamental frequency map serve as a proxy of the thickness of the Cenozoic sedimentary cover, yielding results consistent with previous observations based on variations in the amplitude of ambient seismic noise in the 2–20 Hz band during the period of low anthropogenic activity caused by the lockdown measures decreed during the COVID-19 pandemic.

在巴塞罗那市使用永久和临时地震部署获得的微震数据被用于系统地分析土壤基频和水平与垂直频谱比（HVSR）振幅估计的鲁棒性，利用大多数台站可获得的长记录周期，以几个月为单位。该分析考虑了不同的时间窗口长度、一天中的时间和一年中的季节。总的来说，结果是一致的；然而，我们确定了特定的时间间隔，其中结果，特别是HVSR峰值的幅度，明显偏离平均值。我们观察到，在这些间隔期间，由于海浪活动减少，微震峰的地震能量低于平均水平。因此，我们解释，在海面平静期，由于地震能量不足，HVSR结果可能会有偏差。新的HVSR估计值与现有数据相结合，获得了巴塞罗那土壤基本频率的更新地图，有助于改善城市的微带和地震风险评估。此外，我们表明，土壤基频图可以代表新生代沉积覆盖厚度，其结果与先前基于在COVID-19大流行期间颁布的封锁措施导致的低人为活动期间2-20 Hz波段环境地震噪声幅度变化的观测结果一致。

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引用次数: 0

3-D seismic response of moment-resisting frame considering soil-structure interaction: A semi-analytical solution 考虑土-结构相互作用的抗弯矩框架的三维地震反应：半解析解

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-04-01 Epub Date: 2026-01-02 DOI: 10.1016/j.soildyn.2025.110020

Yue Wang , Yan Lu , Zhenning Ba , Yang Li , Zhanxiang Liu

Large-span structures exhibit closely spaced modes of vibration, and are highly sensitive to vertical vibrations. Soil-structure interaction (SSI) alters the dynamic characteristics of these structures and introduces additional damping effects, which may adversely affect the seismic performance. Seismic response analysis of large-span structures incorporating SSI is crucial for accurately elucidating the dynamic response and failure mechanisms. This paper presents a 3-D foundation-moment-resisting frame (MRF) model of large-span structures incorporating SSI, and a semi-analytical solution for displacement of MRF model under incident 3-D seismic waves is proposed. Parametric analysis of incident wave frequency, incident wave angle, frame stiffness, and frame span are conducted. The influence of different analysis model is also discussed by comparing with a single-degree-of-freedom (SDOF) model. Results show that the frame displacement initially increases and then decreases as the frame span ratio and relative frame flexibility increases, the peak displacement of frame is 1.01 times, 12.78 times, and 18.65 times larger than the corresponding free-field displacement under incident P, SV and SH waves, respectively. Since the SDOF model considers no effects of foundation interaction and possesses less vibration modes, the displacement of SDOF model in directions where no seismic wave is incident is 95.26 % less than that of MRF model. The SDOF model has a lower stiffness compared to MRF model under identical relative frame flexibility, demonstrating a 33.68 % increase in the maximum z-direction displacement relative to MRF model.

大跨度结构具有紧密分布的振型，对竖向振动高度敏感。土-结构相互作用（SSI）改变了这些结构的动力特性，并引入了额外的阻尼效应，这可能会对抗震性能产生不利影响。大跨度结构的地震反应分析是准确阐明结构动力响应和破坏机制的关键。本文提出了基于SSI的大跨度结构三维基础-抗弯矩框架模型，并给出了该模型在入射三维地震波作用下位移的半解析解。对入射波频率、入射波角、车架刚度和车架跨度进行了参数化分析。通过与单自由度（SDOF）模型的比较，讨论了不同分析模型的影响。结果表明：随着框架跨比和框架相对柔度的增大，框架位移先增大后减小，在P波、SV波和SH波入射下，框架的峰值位移分别是相应自由场位移的1.01倍、12.78倍和18.65倍；由于SDOF模型不考虑地基相互作用的影响，具有较少的振动模态，因此在无地震波入射方向上，SDOF模型的位移比MRF模型的位移小95.26%。与MRF模型相比，在相同的相对框架柔度下，SDOF模型的刚度较低，最大z方向位移比MRF模型增加33.68%。

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引用次数: 0

Developing intensity prediction equations from ground-motion parameters in the northwestern Himalaya 根据喜马拉雅西北部地震动参数建立强度预测方程

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-04-01 Epub Date: 2026-01-02 DOI: 10.1016/j.soildyn.2025.110044

Rajiv Kumar, Himanshu Mittal, Atul Saini, Rimpy Taya, Shanker Pal

This study presents a newly developed empirical regression relationship relating macroseismic intensity with ground motion parameters, particularly peak ground acceleration (PGA) and peak ground velocity (PGV) for the northwestern Himalayan region. The analyses utilize 270 strong-motion records from 76 earthquakes (3.5 ≤ Mw ≤ 7.6) that occurred between 1976 and 2024, with hypocentral distances extending up to 400 km. The intensity values were assigned to each recording station based on isoseismal maps. Initial linear predictive equations were established using mean peak ground motion values through least squares or dimming regression approaches. The residual analysis revealed dependence on both magnitude and distance, motivating the development of refined models that explicitly include these parameters. The improved intensity–ground motion conversion relations exhibit reduced variability compared to simple linear models, providing more reliable predictions of Modified Mercalli Intensity (MMI). A comparative assessment with existing relations for the Himalaya and other global regions highlights discrepancies, likely due to differences in datasets, intensity assignment procedures, and regional seismotectonic features. The proposed models are expected to significantly enhance rapid seismic hazard assessment, damage evaluation, and loss estimation for future earthquakes in the NW Himalaya and surrounding areas.

本文提出了喜马拉雅西北地区大震烈度与地震动参数，特别是峰值地加速度（PGA）和峰值地速度（PGV）之间的经验回归关系。分析利用了1976年至2024年间发生的76次地震（3.5≤Mw≤7.6）的270次强震记录，震源距离延伸至400公里。根据等震图将烈度值分配给各测点。通过最小二乘或调光回归方法，利用平均峰值地震动值建立初始线性预测方程。残差分析揭示了对量级和距离的依赖，从而推动了明确包括这些参数的精炼模型的发展。与简单的线性模型相比，改进的强度-地面运动转换关系表现出更低的变异性，为修正Mercalli强度（MMI）提供了更可靠的预测。与喜马拉雅和其他全球地区现有关系的比较评估突出了差异，可能是由于数据集、强度分配程序和区域地震构造特征的差异。所提出的模型有望显著提高西北喜马拉雅及周边地区未来地震的快速地震危险性评估、损害评估和损失估计。

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引用次数: 0

Lateral cyclic behaviors of piles installed in silt treated by vacuum preloading method (VPM) considering the one-way and two-way loading modes 考虑单向和双向加载方式的真空预压法（VPM）淤泥中桩侧循环特性

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-04-01 Epub Date: 2026-01-02 DOI: 10.1016/j.soildyn.2025.109986

Wei Qin , Yuqi Pan , Guoliang Dai , Xudong Dong , Xiuli Du

Coastal silt soils have inferior engineering properties, such as high water content and low strength. The vacuum preloading method (VPM) is widely used to enhance these soils. Piles in VPM-reinforced silt layers mainly experience lateral cyclic loadings (e.g., wind and waves) in one-way or two-way modes. To investigate their lateral cyclic performance, eight model tests were conducted with varying loading modes, cycle numbers, and frequencies, examining pile-soil system degradation over 8000 cycles. Results demonstrated that, under identical cycles and frequencies, two-way loading caused more significant reductions in lateral stiffness and bearing capacity compared to one-way loading, with the differences diminishing at greater soil depths. During the initial 500 cycles, pile stiffness degraded rapidly, while the degradation rate slowed thereafter. Under high-frequency loading (2 Hz and 4 Hz), bending moments were notably reduced: by 65 % and 60 % at 1 D depth, and by 45.76 % and 54.29 % at 6 D depth, respectively. Compared to model tests, the p-y curves from API and Rajashree et al. underestimated lateral stiffness at 1 D depth but overestimated it at 6 D depth. This study provides technical guidance for monopile design in VPM-reinforced silt soils.

海岸带粉土具有含水率高、强度低等工程特性。真空预压法（VPM）被广泛应用于这些土的加固。在vvm加筋粉土层中，桩主要经历单向或双向的侧向循环荷载（如风浪）。为了研究它们的横向循环性能，进行了8个不同加载模式、循环次数和频率的模型试验，在8000次循环中检查桩-土系统的退化。结果表明，在相同的循环和频率下，双向加载比单向加载对侧移刚度和承载力的降低更为显著，且随着土层深度的增加，这种差异逐渐减小。在前500次循环中，桩体刚度退化速度较快，此后退化速度减慢。在高频加载（2 Hz和4 Hz）下，弯矩明显减小：在1维深度下分别减少65%和60%，在6维深度下分别减少45.76%和54.29%。与模型试验相比，API和Rajashree等人的p-y曲线低估了一维深度下的侧向刚度，而高估了六维深度下的侧向刚度。该研究为粉土单桩设计提供了技术指导。

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引用次数: 0

Toward explainable pile buckling capacity prediction in liquefiable strata: Integrating a hybrid framework of AutoML and SHAP 可液化地层中可解释桩屈曲能力预测：AutoML和SHAP混合框架的集成

IF 4.6 2区工程技术 Q1 ENGINEERING, GEOLOGICAL

Soil Dynamics and Earthquake Engineering

Pub Date : 2026-04-01 Epub Date: 2026-01-10 DOI: 10.1016/j.soildyn.2026.110116

Shengkun Wang , Zexiong Wu , Xiaoyu Zhang , Xueyou Li

To overcome the reliance on empirical assumptions and computational costs in existing solutions, this study proposes an explainable machine learning framework for predicting pile buckling capacity in liquefiable strata. A buckling capacity dataset (800 datapoints) calculated from well-validated numerical method was utilized to train and test eight machine learning models. Input features included not only parameters related to pile-soil-structure, but also intensity measures related to ground motion. Subsequently, the predictive performance of models was appraised on the testing dataset using six evaluation metrics, and the prediction error of models was analyzed. The results demonstrated that the used Automated Machine Learning (AutoML) model outperformed all other models. After that, SHapley Additive exPlanations (SHAP) technique was integrated into the AutoML framework to quantify the contributions of input features to model predictions from both global and local perspectives. Based on SHAP analysis results, it was found that the slenderness ratio emerged as the most influential feature on the buckling capacity of piles in liquefied sites. Overall, this framework enables rapid and accurate prediction of pile buckling capacity and facilitates the optimization of pile design in practical engineering.

为了克服现有解决方案对经验假设和计算成本的依赖，本研究提出了一个可解释的机器学习框架，用于预测可液化地层中桩的屈曲能力。利用经过验证的数值方法计算出的屈曲能力数据集（800个数据点）来训练和测试8个机器学习模型。输入特征不仅包括桩土结构相关参数，还包括地震动相关强度指标。随后，在测试数据集上使用6个评价指标对模型的预测性能进行评价，并对模型的预测误差进行分析。结果表明，所使用的自动机器学习（AutoML）模型优于所有其他模型。之后，SHapley加性解释（SHAP）技术被集成到AutoML框架中，从全局和局部角度量化输入特征对模型预测的贡献。基于SHAP分析结果，发现长细比是液化场地桩基屈曲能力影响最大的特征。总体而言，该框架能够快速准确地预测桩的屈曲能力，有利于实际工程中桩的优化设计。

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引用次数: 0