摘要
以重庆市区内的曾家岩大桥南侧浅埋小净距隧道下穿电信营业厅和人行天桥为工程背景,按照左、右洞先后开挖顺序,采用有限元数值模型模拟隧道开挖、初期支护及二次衬砌等关键施工过程,分析各阶段隧道施工对电信营业厅基础和人行天桥基础的变形影响。计算结果表明:左右线隧道开挖完成后,地表既有建筑基础沉降与倾斜均在可控范围内,该隧道设计方案可行。
Based on the engineering background that the shallow buried small clear distance tunnel in the south side of Zengjiayan bridge in Chongqing city passes under the telecom business hall and pedestrian overpass,the key construction processes such as tunnel excavation,primary support and secondary lining are simulated by the finite element method according to the excavation sequence of left and right tunnels,and the influence of tunnel construction on the foundation deformation of telecom business hall and pedestrian overpass is analyzed.The calculation results show that:after the excavation of the left and right tunnels,the settlement and inclination of the existing building foundation on the surface are all within the controllable range;the design scheme of the tunnel is feasible.
作者
余顺
江星宏
王道良
YU Shun;JIANG XinHong;WANG Daoliang(China Merchants Chongqing Communications Research&Design Institute Co Ltd,Chongqing 400067;National Engineering Laboratory For Highway Tunnel Construction Technology,Chongqing 400067;Key Laboratoiy of Tunnel Construetion&Maintenance Technology of the Gommnnication Ministiy,Chongqing 400067)
出处
《现代隧道技术》
EI
CSCD
北大核心
2019年第S02期254-262,共9页
Modern Tunnelling Technology
基金
国家重点研发计划课题(2017 YFC0806003)
重庆市社会事业与民生保障科技创新专项项目(cstc2017 shmsA30010)
关键词
浅埋
小净距隧道
建筑物
变形
Shallow overburden
Tunnel with small clear distance
Building
Deformation
