基坑降水引起的地基应力变化分析

基坑降水对周围地表沉降的破坏已引起广泛关注，传统计算地表沉降的方法是基于总应力不变的观点，计算有效应力增量，且忽略由渗流引起的有效应力增量，结果误差较大。鉴于此，研究了在总应力变化时和考虑渗流作用下，计算土层中有效应力增量的公式，以便满足降水引起的基坑周围地表沉降的计算要求。

Analysis on Foundation Stress Changes Caused by Foundation Pit Dewatering

The destroy of surrounding ground settlement caused by foundation pit dewatering has attracted wide attention.The traditional calculation method of ground settlement was based on the view of unchangeable total stress.Calculating the increment of effective stress and neglecting the increment of effective stress caused by seepage will easily cause the big error.So,based on the condition of changeable total stress and seepage,this paper gives out the calculation formula of soil layer increment of effective str...