聊城银座商城基坑工程地下水影响数值模拟

针对聊城市银座商城基坑外侧地下水位变化对支护结构造成的影响,基于渗流-应力耦合计算理论,采用有限元方法进行分析,得出水位变化造成基坑顶部产生的13.7 cm位移值,计算结果与实际监测得到的11.6cm相接近;基坑底部以下4 m～5 m处旋喷桩桩身拉裂破坏,是导致基坑出现大的变形失稳的主要原因.

Numerical Analysis for Influence of Groundwater in Liaocheng Silver Plaza's Excavation Engineering

Based on the influence of the groundwater changes in Liaocheng Silver Plaza's excavation engineering on anchoring structures,and through analyzing and researching by using the finite element method,it is obtained that the largest displacement on the top of the excavation is 13.7 cm which is close to the monitoring value of 11.6 cm.The largest bending moment appears in the location below the foundation botton for 4 m～5 m,and there would appear the tension-crack damage of chemical churning piles in this location,which would lead to the larger deformation and unstability of the foundations.