摘要
地铁车站施工场地狭小,周边建筑物较多,环境复杂,基坑开挖时易导致基坑失稳、产生周围地表沉降、建筑物产生倾斜等一系列问题,直接影响基坑本身及周围建筑的安全。以某城市轨道交通工程地下标准车站实际工程为背景,辨识地铁深基坑开挖施工中的安全风险因素,并在此基础上,建立基坑开挖三维计算模型。对深基坑开挖变形规律进行研究分析,最大程度的避免和预防施工中可能出现的意外风险事故,有效降低地铁车站深基坑开挖施工安全风险等级,保证地铁车站施工作业安全。
The construction site of subway station is narrow,there are many buildings around it and the environment is complicated.During excavation of foundation pit,it is easy to cause a series of problems,such as foundation pit destabilization,surface settlement around,building inclination,etc.,which directly affects the safety of foundation pit itself and surrounding buildings.This paper takes an urban rail transit project as the background to analyze the safety risk factors in the excavation and construction of deep foundation pit of subway.On this basis,a three-dimensional calculation model for foundation pit excavation is established.Through researching and analyzing the deformation law of deep foundation pit excavation,the possible accidental risk accidents during construction can be avoided and prevented to the greatest extent.Thus,the risk level of construction safety for deep foundation pit excavation of subway station can be effectively reduced and the construction safety of subway station can be guaranteed.
作者
高涛
张翔
GAO Tao;ZHANG Xiang(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)
出处
《云南水力发电》
2022年第8期19-23,共5页
Yunnan Water Power
