摘要
以黄土地区西安地铁车站深基坑工程为依托,通过FLAC软件建立模型,模拟分析深基坑围护桩桩体水平位移特性、地表沉降规律和钢支撑轴力变化规律。实际监测结果与模拟结果基本一致。研究结果表明:车站深基坑采用钻孔灌注桩加内支撑联合围护形式有效限制围护桩桩体水平位移和地表沉降;钢支撑的及时架设能够明显限制深基坑变形,为施工安全提供保障。
Taking the deep foundation pit project of Xi′an metro station in the loess area as basis,model is established using FLAC software,and numerical simulation of the horizontal displacement features of deep foundation pit enclosure structure piles,ground surface settlement pattern,and steel support axial force changing pattern is carried out.Field monitoring results and simulation results are primarily in accordance.Research concludes that:adopting the combined support form of bored piles and internal supports for station deep foundation pit can effectively limit pile horizontal displacement and ground surface settlement.Timely set-up of steel supports can significantly limit the deformation of deep foundation pit and provide guarantee for construction safety.
作者
任建喜
谭牧凡
REN Jianxi;TAN Mufan(College of Architecture and Civil Engineering,Xi′an University of Science and Technology,710054,Xi′an,China)
出处
《城市轨道交通研究》
北大核心
2021年第8期55-58,共4页
Urban Mass Transit
关键词
地铁车站深基坑
黄土地区
围护结构
变形规律
deep foundation pit of metro station
loess area
enclosure structure
deformation pattern
作者简介
第一作者:任建喜,教授。
