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| 1 | 跨断层桥梁抗震综述显示文摘在交通强国战略深入推进的时代背景下,中国公路、铁路网的发展使得跨越断层修建桥梁不可避免,川藏铁路的规划、设计和修建更让这个问题日益突出.同时,公路和铁路抗震规范采用避让断层造桥的规定与无法避让造桥的实际情况之间的矛盾也日渐凸显.在地震作用下跨越活动断层的桥梁比非跨越断层桥梁具有更复杂的受力特点、破坏形式和破坏机理,我国对跨断层桥梁的研究尚处于起步阶段,可供参考的相关文献资料、工程实例以及抗震设计规范缺乏.为了确保跨断层桥梁的安全性,基于国内外对跨断层桥梁的研究现状,归纳总结了活动断层特征、断层处地震动、跨断层桥梁的破坏特征、跨断层桥梁分析方法以及跨断层桥梁概念设计措施.梳理了当前跨越断层桥梁抗震存在的问题,并对未来跨断层桥梁的研究进行了展望,指出断层地震空间性、跨断层桥梁破坏机理、多灾害对跨断层桥梁的影响、跨断层桥梁快速抢修技术和人工智能技术在跨断层桥梁抗震中的应用将是未来发展方向,为未来跨断层桥梁抗震设计、性能评估和规范拟订提供参考. | 贾宏宇 杨健 郑史雄 赵灿晖 杜修力 | 2021 | 西南交通大学学报2021，56，5： | 13 |
| 2 | Simplified approach for design of raft foundations against fault rupture.Part II:soil-structure interaction显示文摘This is the second paper of two, which describe the results of an integrated research effort to develop a four-step simplified approach for design of raft foundations against dip-slip (normal and thrust) fault rupture. The first two steps dealing with fault rupture propagation in the free-field were presented in the companion paper. This paper develops an approximate analytical method to analyze soil-foundation-structure interaction (SFSI), involving two additional phenomena: (i) fault rupture diversion (Step 3); and (ii) modification of the vertical displacement profile (Step 4). For the first phenomenon (Step 3), an approximate energy-based approach is developed to estimate the diversion of a fault rupture due to presence of a raft foundation. The normalized critical load for complete diversion is shown to be a function of soil strength, coefficient of earth pressure at rest, bedrock depth, and the horizontal position of the foundation relative to the outcropping fault rupture. For the second phenomenon (Step 4), a heuristic approach is proposed, which 'scans' through possible equilibrium positions to detect the one that best satisfies force and moment equilibrium. Thus, we account for the strong geometric nonlinearities that govern this interaction, such as uplifting and second order (P-Δ) effects. Comparisons with centrifuge-validated finite element analyses demonstrate the efficacy of the method. Its simplicity makes possible its utilization for preliminary design. | I. Anastasopoulos N. Gerolymos G. Gazetas M. F. Bransby | 2008 | Earthquake Engineering and Engineering Vibration2008，7，2： | 3 |
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