摘要
基坑降水过程中,根据有效应力原理,对饱和土体,总应力不变,随着孔隙水压力的减小,导致有效应力增大,作用在土骨架上的应力变大,因此基坑降水就会引起周围土体的沉降。ABAQUS软件通过模拟降水过程中的孔隙水压力的变化,对降水过程中的基坑土体中的应力、应变以及水平位移的变化进行分析,得出基坑周边及基坑底板处土体的沉降变化情况和实际情况基本一致。
During dewatering of foundation pit,according to the principle of effective stress for saturated soils,the total stress is constant,with the decrease of the pore water pressure,lead to increase of effective stress effect on the soil skeleton stress become larger,so the settlement of surrounding soils of foundation pit precipitation will cause ABAQUS software by simulating the change of pore water pressure in the process of precipitation,the precipitation in the process of stress and strain and the change of the horizontal displacement of foundation pit soil were analyzed,and the results show that the settlement of the soil around the foundation pit and the foundation pit floor is consistent with the actual situation.
作者
罗景崭
熊建刚
LUO Jing-zhan;XIONG Jian-gang(Zhong Zi Hua Ke Traffic Coustruction Technology Co.,Ltd.;Creec(Guangdong) Harbor Survey Anddesign Co.,Ltd.)
出处
《智能建筑与智慧城市》
2019年第5期106-109,共4页
Intelligent Building & Smart City
关键词
基坑降水
流固耦合
有限元分析
foundation pit dewatering
fluid-solid coupling
finite element analysis
