近接隧道施工工序的数值模拟研究  

Numerical Simulation of Construction Procedure of Adjacent Tunnels

作　　者：刘传利[1] 漆泰岳[1] 谭代明[1] 琚国全[1] 

机构地区：[1]西南交通大学土木学院,成都610031

出　　处：《隧道建设》2009年第1期50-53,共4页Tunnel Construction

摘　　要：文章结合广州地铁六号线昌沙区间隧道,采用了三维数值模拟方法,通过模拟上下台阶法施工过程,对比分析了临时仰拱的效果及右线施工对左线和地表沉降的影响,介绍了地表沉降、受力、位移及塑性区的发展情况,揭示了临时仰拱的作用和近接隧道施工对地表沉降和先行隧道的不利影响,为工程施工方案制定提供了参考依据。Taking the construction of Changsha Tunnel on No. 6 Line of Guangzhou Metro as an example, the authors simulate the construction procedure of bench method excavated tunnel by means of 3D numerical simulation. Then, the authors comparatively analyze the effect of temporary invert and the influence of the construction of the right tube on the right tube and the ground surface settlement and present the trend of ground surface settlement, stressing, displacement and plastic zone in right tube constructing. The analysis results demonstrate the function of the temporary invert and the adverse influence of adjacent tunnel construction on the ground surface settlement and the former excavated tunnel. This paper can help the determination of construction scheme.

关 键 词：浅埋隧道 近接施工 地表沉降 位移 塑性区 

分 类 号：U455[建筑科学—桥梁与隧道工程]