某深基坑局部变形过大原因分析

The causes of excessive local deformation of a deep foundation pit

某基坑在施工过程中,由于紧邻基坑设置钢筋堆场、停放混凝土罐车及锚索施工质量不佳等多种因素,导致基坑出现较大变形,直接影响基坑内的人员安全及基础的正常施工。在采取卸载、坑外降水及设置角撑及拉锚等应急措施后,变形得到有效控制。

During the construction of a foundation pit,many factors,such as the setting of steel bars yard close to the foundation pit,the parking of concrete tank trucks and the poor construction quality of anchor cables,result in large deformation of the foundation pit,which directly affects the safety of personnel in the foundation pit and the normal construction of the foundation pit.After taking emergency measures such as unloading,precipitation outside pit and setting gusset and anchor,deformation is effectively controlled.