摘要
以西安地铁某大型车站深基坑工程为背景,采用现场监测与三维数值模拟相结合的方法,研究了开挖过程中地铁车站深基坑的变形规律。结果表明,围护桩的变形直接关系到基坑的稳定和安全;开挖使得基坑周围土体下沉,地表沉降呈抛物线型;计算结果与监测结果基本一致,运用FLAC3D数值计算方法研究深基坑的变形规律是可行的、可靠的。
Taking the deep foundation pit engineering of a large station of Xi＇an subway as background,the deformation rules of deep foundation pit at subway station in tunneling are studied with the method of field monitoring and 3D numerical simulation.The results show that deformation of retaining piles influences the stability and safety of foundation pit directly;excavation leads to settlement of surrounding soil and the surface settlement is parabolic;the calculated results are almost the same with monitoring results.It is practical and reliable to study the deformation rules of deep foundation pit with FLAC3D.
出处
《北方交通》
2011年第7期55-58,共4页
Northern Communications
关键词
地铁车站
深基坑
变形规律
数值模拟
Subway station
Deep foundation pit
Deformation rules
Numerical simulation
