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Uncertainty quantification in the strain response of prestressed reinforced concrete structures using fractile based sampling 利用基于分形的取样方法量化预应力钢筋混凝土结构应变响应的不确定性
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2024-01-09 DOI: 10.1080/15732479.2023.2300072
Xingjian Wang, Alfred Strauss, Norbert Randl, Paolo Bocchini
The probabilistic evaluation of the capacity and response of structural systems is often done by probabilistic simulation. This approach relies on a considerable number of deterministic analyses to...
结构系统的承载能力和响应的概率评估通常是通过概率模拟来完成的。这种方法依赖于大量的确定性分析,以...
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引用次数: 0
Failure modes-based seismic fragility analysis of concrete gravity dams considering concrete heterogeneity 考虑混凝土异质性的混凝土重力坝基于破坏模式的地震脆性分析
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2024-01-02 DOI: 10.1080/15732479.2023.2300084
Xunqiang Yin, Shutong Xu, Xiaoyan Li
The heterogeneity of mass concrete often leads to the initiation of micro-cracks in gravity dams, while the accumulation of damage of concrete on the meso-scale leads to the cracking behaviour on t...
大体积混凝土的异质性通常会导致重力坝出现微裂缝,而混凝土在中观尺度上的损伤累积则会导致重力坝的开裂行为。
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引用次数: 0
Bridge vulnerabilities and collapses: the Italian experience 桥梁的脆弱性和坍塌:意大利的经验
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2023-12-25 DOI: 10.1080/15732479.2023.2277362
Pier Giorgio Malerba
Many recent collapses concerned old bridges, but also modern ones, often having the same age, the same types of materials, and the same technologies. Therefore, it is crucial to analyse the errors ...
最近发生的许多坍塌事故都与老桥有关,但也与现代桥梁有关,这些桥梁往往具有相同的年代、相同的材料类型和相同的技术。因此,分析这些错误至关重要。
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引用次数: 0
Exploring the potential of the semi-active inertial absorber in control resonant effects for short-to-medium span high-speed railway bridges 探索半主动惯性吸收器控制中短跨度高速铁路桥梁共振效应的潜力
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2023-12-19 DOI: 10.1080/15732479.2023.2292182
Khanh Nguyen, José Manuel Soria, Iván Muñoz Díaz, J. M. Goicolea
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引用次数: 0
Analysis of debonding mechanism and concrete cover failure of steel and steel fibre reinforced concrete composite beams 钢与钢纤维增强混凝土复合梁的脱粘机理和混凝土覆盖层破坏分析
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2023-12-18 DOI: 10.1080/15732479.2023.2292764
Kai Wu, Yanjie Zhang, Yang Li, Qingqing Liang, Shiyuan Qian
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引用次数: 0
Hybrid simulation tests evaluating the seismic performance of lead high-damping rubber bearings at low temperatures 评估铅制高阻尼橡胶支座低温抗震性能的混合模拟试验
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2023-12-18 DOI: 10.1080/15732479.2023.2292757
Yuqing Tan, Ji Dang, Akira Igarashi, Takehiko Himeno, Yuki Hamada
As a hybrid rubber isolation bearing, the lead high-damping rubber bearing (LHB) exhibits enhanced seismic isolation and energy dissipation performance by combining lead cores and high-damping rubb...
作为一种混合橡胶隔震支座,铅芯高阻尼橡胶支座(LHB)将铅芯和高阻尼橡胶结合在一起,具有更强的隔震和消能性能。
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引用次数: 0
A forensic investigation of progressive bridge collapse under floods and asymmetric scour validated by incident video footages 洪水和非对称冲刷下渐进式桥梁坍塌的法证调查,通过事故视频录像进行验证
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2023-12-15 DOI: 10.1080/15732479.2023.2290701
Rongzhao Zhang, Wen Xiong, Xiaolong Ma, C.S. Cai
Hydraulic bridge failures generally occur abruptly and are unpredictable, which leads to difficulties in tracing causes due to the unavailability of the actual structural and conditional state at t...
水工桥梁失效通常发生突然且不可预测,由于无法获得失效时的实际结构和条件状态,因此难以追溯失效原因。
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引用次数: 0
UAV-driven approach for assisting structural health monitoring of port infrastructure 无人机驱动的港口基础设施结构健康监测辅助方法
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2023-12-11 DOI: 10.1080/15732479.2023.2290255
Christina N. Tsaimou, Panagiotis Sartampakos, Vasiliki K. Tsoukala
Port engineering planning and management seek to confront challenges affecting the functional and structural capacity of port systems. To achieve this, design, maintenance, and rehabilitation strat...
港口工程规划和管理旨在应对影响港口系统功能和结构能力的挑战。为实现这一目标,设计、维护和修复策略......
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引用次数: 0
A consistent approach to the calibration of partial factors for permanent and variable loads in the 2nd generation of the Eurocodes 第二代欧洲规范中永久荷载和可变荷载局部系数的一致校准方法
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2023-12-08 DOI: 10.1080/15732479.2023.2290704
Paolo Formichi, Filippo Landi, Pietro Croce
In view of the development of the 2nd generation of structural Eurocodes, a discussion about target reliability levels and the calibration of partial factors for actions has started and it is curre...
鉴于第二代欧洲结构规范的制定,有关目标可靠性水平和校准部分行动因素的讨论已经开始,目前正在进行中。
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引用次数: 0
An integrated damage modeling and assessment framework for overhead power distribution systems considering tree-failure risks 考虑树木倒塌风险的架空配电系统综合损害建模和评估框架
IF 3.7 3区 工程技术 Q1 Engineering Pub Date : 2023-12-02 DOI: 10.1080/15732479.2022.2053552
Q. Lu, Wei Zhang
Abstract The overhead power distribution system (OPDS) is vulnerable to strong winds, such as hurricanes. Due to the challenges of including tree damage risks to the OPDS, tree failures are usually ignored in the risk assessment of the OPDS against strong winds. In the present study, an integrated damage modeling and assessment framework for the OPDS is proposed considering tree failure risks. The geographical information of trees surrounding the OPDS is extracted from satellite images using computer vision techniques, including CNN-based (convolutional neural network) image classifier and sliding window approach. The tree failure risk models are developed using tree geographical information in conjunction with tree height data, tree allometry and finite element analysis. With further integration of the conditional probability failure of poles under fallen tree impacts, the pole’s failure probability considering the combined wind and fallen trees is obtained using series system reliability analysis. The failure probability of the pole is obtained using physics-based modeling facilitated by Bayesian regularisation neural network (BRNN) algorithm. The poles and wires are connected for system reliability assessment using connectivity-based theory. When the wind direction is counterclockwise from the east and the wind speed is 57 m/s, tree-failure can introduce 68.6% differences in OPDS’ failure probabilities compared with that without consideration of fallen trees.
摘要架空配电系统(OPDS)容易受到飓风等强风的影响。由于将采油树损坏风险纳入OPDS的风险评估,因此在对OPDS进行强风风险评估时,通常会忽略采油树故障。在本研究中,提出了考虑采油树失效风险的OPDS综合损伤建模与评估框架。利用计算机视觉技术,包括基于cnn(卷积神经网络)的图像分类器和滑动窗口方法,从卫星图像中提取OPDS周围树木的地理信息。利用树木地理信息,结合树木高度数据、树木异速生长和有限元分析,建立了树木失效风险模型。进一步整合倒下树木影响下杆子失效的条件概率,利用串联系统可靠性分析得到考虑风和倒下树木联合作用下的杆子失效概率。采用基于物理的贝叶斯正则化神经网络(BRNN)算法进行建模,得到了极点的失效概率。采用基于连接性的理论对系统的可靠性进行评估。当风向为逆时针风向,风速为57 m/s时,树木失效与不考虑树木倒塌情况下OPDS的失效概率差异达68.6%。
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引用次数: 6
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Structure and Infrastructure Engineering
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