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首页> 外文期刊>Journal of geotechnical and geoenvironmental engineering >Probabilistic Performance-Based Procedure to Evaluate Pile Foundations at Sites with Liquefaction-Induced Lateral Displacement
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Probabilistic Performance-Based Procedure to Evaluate Pile Foundations at Sites with Liquefaction-Induced Lateral Displacement

机译：基于概率性能的程序在液化引起侧向位移现场评估桩基

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摘要

Liquefaction-induced ground deformation has caused major damage to bridge and wharf structures in past earthquakes. Large lateral ground displacements may induce significant forces in the foundation and superstructure, which may lead to severe damage or even collapse. A performance-based earthquake engineering (PBEE) approach can provide an objective assessment of the likely seismic performance, so that agencies can evaluate bridge or wharf structures, compare retrofit strategies, and rank them within their overall system. In this paper, a probabilistic PBEE design procedure that incorporates findings from recent research on this problem is presented. The proposed approach can provide answers in terms that are meaningful to owners, such as expected repair costs and downtimes. The methodology is validated through its application to a well-documented case history. Results show that the proposed approach provides a good estimate of the seismic performance of pile-supported structures at sites with liquefaction-induced lateral displacement.
机译：液化引起的地面变形在过去的地震中对桥梁和码头结构造成了重大破坏。较大的侧向地面位移可能会在基础和上部结构中引起很大的力，从而可能导致严重的破坏甚至倒塌。基于性能的地震工程（PBEE）方法可以提供对可能的地震性能的客观评估，以便机构可以评估桥梁或码头结构，比较改造策略并在整个系统中对其进行排名。在本文中，提出了一种概率PBEE设计程序，该程序结合了有关该问题的最新研究成果。所提出的方法可以提供对业主有意义的答案，例如预期的维修成本和停机时间。通过将其应用到有据可查的案例历史中，可以验证该方法。结果表明，所提出的方法为液化引起的侧向位移现场的桩支撑结构的抗震性能提供了很好的估计。

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