重力挡土墙地震反应研究评述

Review of study on seismic response of gravity type retaining wall

首先,对重力挡土墙的地震反应机理进行了探讨,在此基础上简要回顾了国内外抗震设计规范的演变进程;然后,对挡土墙地震反应的研究方法进行了细致评述,包括拟静力极限平衡分析法、简化条件解析法、极限位移法、地震土压力简化公式、集总参数法、整体有限元法、现场地震调查、离心机试验、振动台试验和原型观测实验等;最后,指出了需要解决的问题并提出了今后的研究方向。

Firstly, seismic response mechanism of gravity type retaining wall （GTRW） is discussed. And based on this, aseismic design codes of retaining wall at home and abroad are evaluated. Then, analysis methods of GTRW, including pseudo-static equilibrium method, analytical method on simple condition, limit displacement method, simple formula of earthquake earth pressure, lumped parameter method, FEM, seismic investigations in field and centrifugal test, shaking table test and prototype test, etc. are carefuLly reviewed. At the same time, concise remarks are made. Finally, existing problems are pointed out and the study problems, which need to be done in future, are suggested. Especially, combined with soil test, development of a nonlinear numerical simulation technique with higher efficiency, accuracy, more stability and possibility to consider water effect in soil is a trend.