中外公路2025，Vol.45Issue(2)：29-37,9.DOI:10.14048/j.issn.1671-2579.2025.02.003
深基坑开挖对自身围护结构及邻近隧道的影响研究
Influence of Deep Foundation Pit Excavation on Retaining Structure and Adjacent Tunnels
摘要
Abstract
With the continuous advancement of urban construction,underground engineering has entered a period of rapid development.Foundation pit engineering will inevitably have an impact on the surrounding environment,especially on the existing structures.Based on the foundation pit engineering of Hongqiao Station of Nanjing Metro Line 5,this paper explored the influence of deep foundation pit excavation on its own retaining structure,surrounding ground surface,and adjacent existing municipal tunnels through on-site construction monitoring and numerical simulation.The results show that the excavation of the foundation pit results in a large settlement of the surrounding ground surface,and the maximum settlement position is about 0.35 the excavation depth from the foundation pit.The horizontal displacement of the diaphragm wall first increases and then decreases with the depth,reaching the peak value at the depth of 15-16 m.The maximum horizontal displacement at the end well is less than that at the standard section but does not exceed the limit value.When excavation proceeds to the pit bottom,the axial force of the third support is the largest,which is close to the location where the maximum deformation of the diaphragm wall occurs.The north side of the tunnel structure close to the foundation pit has a vertical uplift,and the horizontal direction has a small displacement towards the pit.关键词
基坑开挖/隧道结构/现场监测/地连墙/地表沉降/支撑轴力Key words
foundation pit excavation/tunnel structure/on-site monitoring/diaphragm wall/ground surface settlement/axial force of support分类
交通工程引用本文复制引用
高洪赟,徐天涵,王志华,卢瑶..深基坑开挖对自身围护结构及邻近隧道的影响研究[J].中外公路,2025,45(2):29-37,9.基金项目
江苏省高等学校自然科学研究重大项目(编号:18KJA560002) （编号:18KJA560002）
