Seismic time-history analysis of block-faced reinforced-soil retaining wall based on pseudo-dynamic method

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes Pub Date : 2024-02-06 DOI:10.1016/j.geotexmem.2024.01.004

Liang Lu , Bo Chen , Peng Liu , Zongjian Wang , Katsuhiko Arai

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引用次数: 0

Abstract

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.

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基于伪动力法的块体加筋土挡土墙地震时程分析

加筋土挡土墙的水平位移是一种常见的震害变形模式。地震后的水平位移时间历程和累积变形是评价加筋土挡土墙抗震性能的重要参数，但目前这方面的理论研究较少。本研究提出了一种计算块体加筋土挡土墙水平位移时间历程的分析方法。该方法基于伪动力法和微分运动学方程，用于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，同时考虑了累积变形。通过与模型试验和现有理论的对比，验证了该方法的合理性和准确性。此外，还进行了参数分析，进一步证实了该方法的适用性。研究结果表明，该方法考虑了累积变形的影响，能有效计算较大振幅下块石加筋土挡土墙的水平位移时间历程。虽然计算值小于实际变形值，但两者仍然比较接近。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geotextiles and Geomembranes 地学-地球科学综合

CiteScore

9.50

自引率

21.20%

发文量

111

审稿时长

59 days

期刊介绍： The range of products and their applications has expanded rapidly over the last decade with geotextiles and geomembranes being specified world wide. This rapid growth is paralleled by a virtual explosion of technology. Current reference books and even manufacturers' sponsored publications tend to date very quickly and the need for a vehicle to bring together and discuss the growing body of technology now available has become evident. Geotextiles and Geomembranes fills this need and provides a forum for the dissemination of information amongst research workers, designers, users and manufacturers. By providing a growing fund of information the journal increases general awareness, prompts further research and assists in the establishment of international codes and regulations.