近距离地铁施工的有限元数值模拟  

Numerical simulation for constructions of metro tunnels with short distance between them

作　　者：毕继红[1] 江志峰[1] 常斌[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《岩土力学》2005年第2期277-281,共5页Rock and Soil Mechanics

摘　　要：在地铁施工中受地形条件限制有时会遇到两条单线隧道近距离施工情况,有的间距超出了规范的要求。以深圳市轨道交通二期 1 号线续建工程为例,应用 ABAQUS 程序对实际情况进行了数值模拟分析,揭示了在开挖右线工程的时对左线既有隧道产生的影响,包括地表沉降、应力分布和衬砌变形及对地面建筑的影响,得出一些有益的结论,为今后近距离地铁施工提供可靠的依据。The situation of two tunnels with short distance between them will be encountered in the construction of metro, because of the limitation of topographical conditions, sometimes their spacing is beyond rule of code. In this paper, the ABAQUS program is used to analyze the actual status of the continuous construction of one number line in the second period of time of Shenzhen City Railway Traffic System by numerical simulation and shows the right line construction's effect on the left line, including the ground surface subsidence, building, stress distributions and liner deformation. Meanwhile, some beneficial conclusions are drawn to offer constructions of tunnels with short distance between them.

关 键 词：深圳地铁 数值模拟 沉降 变形 应力 

分 类 号：U21[交通运输工程—道路与铁道工程] TB115[理学—数学]