考虑第二破裂面的折线墙背挡土墙的地震主动土压力  

Seismic active earth pressure on retaining walls with a broken-line backsurface by considering the second failure surface of backfill

作　　者：张晓曦 彭涛 柯灵 付曾 何思明 ZHANG Xiao-xi;PENG Tao;KE Ling;FU Zeng;HE Si-ming(Chengdu Surveying Geotechnical Research Institute,Co.,Ltd.of Metallurgical Corporation of China,Chengdu 610023,China;Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610299,China)

机构地区：[1]中冶成都勘察研究总院有限公司,成都610023 [2]中国科学院·水利部成都山地灾害与环境研究所,成都610299

出　　处：《兰州大学学报（自然科学版）》2023年第4期562-568,共7页Journal of Lanzhou University(Natural Sciences)

基　　金：国家自然科学基金重大项目(41790433);国家自然科学基金项目(52078434)。

摘　　要：应用极限平衡原理和库伦土压力思想,研究地震荷载作用下折线墙背挡土墙的主动土压力问题.采用拟动力法对地震荷载进行描述,考虑地震荷载作用下第二破裂面的产生条件,推导折线墙背挡土墙的地震主动土压力计算公式.通过算例分析各参数对折线墙背挡土墙的地震主动土压力的影响,预测墙后填土滑裂面的位置.Based on Coulomb's earth pressure theory,the active earth pressure was studied in the framework of the limit equilibrium theory subjected to earthquake.The multivariate function to calculation seismic active earth pressure via taking account of the occurrence of the second fracture surface condition was established and optimized by a mathematical method using the pseudo-dynamic approach.The example was studied for influences of various parameters on seismic active earth pressure and this can be used to determine the potential sliding surface.

关 键 词：折线墙背 地震主动土压力 第二破裂面 拟动力法 土压力分布 

分 类 号：TU475[建筑科学—结构工程]