基坑开挖对紧邻建筑物沉降影响的数值分析

Numerical Analysis on Influence of Pit Excavation on Settlement of Closely Neighboring Buildings

该文介绍了采用数值模拟方法对某地道工程基坑对临近建筑物的影响进行的分析。通过有限元模型,分析了南地道开挖过程对紧邻建筑物沉降的影响,并与监测数据对比。结果表明此方法计算值与监测值基本吻合,可以较好地模拟基坑紧邻建筑物的沉降规律。最后用此方法预测了北地道开挖对紧邻基坑北侧建筑物沉降的影响,对北地道工程施工有一定指导意义。

The article introduces and analyzes the influence of a subway engineering pit on the closely neighboring buildings by the numerical simulating method.The article uses the finite element model to analyze the influence of the excavation process of the south subway on the settlement of the closely neighboring buildings,and compares the monitoring and testing date.The result makes clear that the calculation value of this method basically match with the monitoring test value,which can better simulate the settlement rule of the buildings closely with the pit.Finally,this method it used to forecast the influence of the north subway excavation on the settlement of the buildings at the north side of pit,which has a certain instructing meanings for the construction of the north subway engineering.