同济大学学报（自然科学版）2025，Vol.53Issue(4)：548-556,9.DOI:10.11908/j.issn.0253-374x.23302
南京地区基于地铁隧道保护要求的基坑变形控制指标
Deformation Control Indicator for Deep Foundation Pit Based on Subway Tunnel Protection Requirements in Nanjing Area
摘要
Abstract
In order to ensure the safety of adjacent subway tunnels during deep foundation pit excavation in Nanjing soft soil area,it is necessary to propose control indicators based on protection requirements of subway tunnels.Based on a deep foundation pit project in Nanjing,the effect of deep foundation pit excavation on the deformation of adjacent subway tunnels was studied through 3D finite element numerical simulation.The deformation response characteristics of subway tunnels and foundation pits under the condition of relative position changes were systematically explored,and a formula for calculating the maximum horizontal displacement of subway tunnels was put forward.According to protection requirements of subway tunnels,the impact area of foundation pit excavation on subway tunnels was divided,and then a control standard for the horizontal deformation of foundation pit enclosure based on subway tunnel protection requirements was proposed.关键词
深基坑开挖/地铁隧道/数值模拟/影响区划分/控制标准Key words
deep foundation pit excavation/subway tunnel/numerical simulation/division of impact areas/control standard分类
土木建筑引用本文复制引用
宋博文,秦会来,王蓉,翟雷,王龙,吕玺琳..南京地区基于地铁隧道保护要求的基坑变形控制指标[J].同济大学学报（自然科学版）,2025,53(4):548-556,9.基金项目
国家重点研发计划(2016YFC0800200) （2016YFC0800200）
中建二局科技项目(2021ZX000001) （2021ZX000001）
