摘要
依托地下室基坑开挖工程,采用数值模拟手段,分析基坑开挖对临近地铁隧道和车站的影响。研究结果表明:基坑开挖引起最大变形发生在地表部位,坑底隆起变形较小;基坑开挖导致隧道和车站结合部应力集中,对隧道结构的渗漏水产生不利影响;基坑施工中,应加强监测并进行局部加固处理。
Based on an excavation of basement foundation pit as the case, the influence of foundation pit excavation on adjacent subway tunnels and stations is analyzed by numerical simulation. The results show that the maximum deformation caused by the excavation of the foundation pit occurs at the surface, and the upheaval deformation of the pit bottom is small. The excavation of foundation pit leads to the stress concentration at the junction between the tunnel and the station, which adversely affects the leakage of the tunnel structure. During the construction of foundation pit, monitoring frequency and local reinforcement need to be strengthened.
作者
孟鹏
MENG Peng(CCCC Second Highway Consultant Co.,Ltd.,Wuhan 430056,China)
出处
《低温建筑技术》
2022年第10期80-84,共5页
Low Temperature Architecture Technology
关键词
基坑开挖
区间隧道
地铁车站基坑
近接施工
施工保护措施
pit excavation
running tunnel
foundation pit of metro station
approaching construction
construction protection measures
