河北工业科技2024，Vol.41Issue(4)：255-262,8.DOI:10.7535/hbgykj.2024yx04003
台阶级数对加筋土挡墙地震动力响应影响研究
Study on the effect of step series on seismic dynamic response of reinforced soil retaining wall
摘要
Abstract
In order to optimize the structural design of reinforced earth retaining wall,the influence of step series on the seismic performance of reinforced earth retaining wall was studied.Based on Flac3D software,a numerical model of reinforced earth retaining wall was established,and the lateral displacement,vertical settlement,acceleration response and horizontal earth pressure of reinforced earth retaining walls with different step series under different peak ground acceleration(PGA)were discussed.The results show that under the peak acceleration of 4 m/s2,the lateral displacement decreases by 61.9%and the vertical settlement decreases by 20.5%with the increase of step series;The PGA amplification factor increases with the increase of the step number,and the PGA amplification factor in the stiffened area is slightly larger than that at the panel;The horizontal earth pressure of the one-stage retaining wall is maximum at the bottom,and the horizontal earth pressure of the two-stage and three-stage retaining walls reaches the maximum at the grading;The horizontal earth pressure is greater than the calculated value of the specification at the grading.Increasing the number of steps can improve the seismic performance of reinforced soil retaining wall.The research can provide theoretical reference for the classification design of reinforced soil retaining walls in practical engineering.关键词
地基基础工程/加筋土挡墙/台阶级数/数值模拟/抗震性能Key words
foundation engineering/reinforced soil retaining wall/step series/numerical simulation/seismic performance分类
建筑与水利引用本文复制引用
梁小勇,李智广,张森,靳静,邵明杰..台阶级数对加筋土挡墙地震动力响应影响研究[J].河北工业科技,2024,41(4):255-262,8.基金项目
河北省自然科学基金(E2019208159) （E2019208159）
石家庄铁道大学省部共建交通工程结构力学行为与安全国家重点实验室开放课题(1902) （1902）
河北科技大学博士科研启动基金(1181482) （1181482）
