The horizontal displacement of a reinforced-soil retaining wall is a common deformation mode of seismic damage. The horizontal displacement time history and accumulative deformation after earthquakes are important parameters for evaluating the seismic performance of a reinforced-soil retaining wall, but theoretical study on this issue is scarce at the moment. In this study, an analytical method is proposed to calculate the horizontal displacement time history of a block-faced reinforced soil retaining wall. The method is based on the pseudo-dynamic method and differential kinematics equations, and this method was used to calculate the reinforcement material's tensile displacement and overall displacement in the reinforced area under earthquake motion, while simultaneously taking into account the accumulative deformation. The rationality and accuracy of this method are verified through comparison with model experiments and existing theories. Besides, parameter analysis was carried out to further confirm the applicability of this method. The study shows the method takes into account the influence of the accumulated deformation, and can effectively calculate the horizontal displacement time history of the block-faced reinforced soil retaining wall under larger magnitudes. Although the calculated values are smaller than the actual deformation, they are still relatively close.

中文翻译：

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基于拟动力法的块面加筋土挡土墙地震时程分析

加筋土挡土墙的水平位移是地震损伤的常见变形模式。水平位移时程和震后累积变形是评价加筋土挡土墙抗震性能的重要参数，但目前对此问题的理论研究还很少。在本研究中，提出了一种计算块面加筋土挡墙水平位移时程的解析方法。该方法基于拟动力法和微分运动学方程，计算地震作用下加固材料的拉伸位移和加固区域的整体位移，同时考虑累积变形。通过与模型实验和现有理论的比较，验证了该方法的合理性和准确性。此外，还进行了参数分析，进一步验证了该方法的适用性。研究表明，该方法考虑了累积变形的影响，能够有效计算较大量级下块面加筋土挡墙的水平位移时程。虽然计算值比实际变形要小，但还是比较接近的。