地铁施工通道下穿既有高速公路施工过程的数值模拟  

Numerical simulation of under-traversed highway tunnel construction process

作　　者：张龙[1] 韩文杰 田祖安[1] 陈金良 

机构地区：[1]重庆科技学院数理学院力学系,重庆401331 [2]中交隧道局第四工程有限公司,四川成都610091

出　　处：《江苏建筑职业技术学院学报》2017年第2期1-4,共4页Journal Of Jiangsu Vocational Institute of Architectural Technology

基　　金：重庆市基础与前沿研究计划项目(cstc2016jcyjA0259);重庆市教委科学技术研究项目(KJ1601304)

摘　　要：地铁施工通道下穿既有高速公路的施工过程,易诱发上方高速公路路面沉降,影响公路正常运营.以某地铁施工通道为例,运用ABAQUS对其施工过程进行三维动态模拟,重点分析了通道开挖对上方高速公路路面沉降的影响,得到了各个开挖阶段的路面沉降值以及支护结构应力变化规律.数值计算表明,通道的开挖不会危及上方高速公路的正常运营.The highway normal operation is easy to be influenced for the above road surface subsidence induced by the under-traverse tunnel construction.Taking a tunnel construction channel as example,using ABAQUS to simulate the 3 Ddynamic construction process,the influence of tunnel excavation to above highway road surface subsidence is analyzed,the surface subsidence value in all stages of the excavation and supporting structure stress change rule are obtained.Numerical calculation shows that the tunnel excavation will not endanger the normal operation of above highway.

关 键 词：下穿施工通道 路面沉降 数值模拟 高速公路 

分 类 号：U445[建筑科学—桥梁与隧道工程]