Numerical analysis of the surrounding ground deformation in interchange tunnel for underground road in Beijing
Yang Sanzi1 Zhang Dingli1,2 Su Jie1,2
1. Key Laboratory of Urban Underground Engineering of the Ministry of Education, Beijing Jiaotong University, Beijing 100044, China
2. Beijing Collaborative Innovation Center for Metropolitan Transportation, Beijing 100124, China
Abstract：Analysis of the surrounding ground deformation is the key problems in the design and construction of interchange tunnels for the underground road in Beijing. Based on the urban underground road construction in Beijing, with the hierarchical generalized model of geological conditions and three dimensional numerical simulation analyzed the surface settlement，tunnel deformation and plastic zone distribution of interchange tunnel by bench method, center diagram(CD), cross diagram(CRD) and double side drift method, cleared the influence law on the underlying interchange area in tunnel construction. The results can be shown as follows. The interchange area was interrupted by above and lower tunnel construction. Ellipsoidal surface formed. Meanwhile, there is a greater differential settlement in the surrounding. In the “X” shaped area of the surface layer, the arch foot and spandrel appeared more concentrated damage area. There are obvious advantages in controlling ground deformation and the damage of interchange tunnels by CRD and double side drift method .The results can be a reference for the relevant design and construction of interchange tunnels in the underground road in Beijing.
杨三资 张顶立 苏洁. 基于数值模拟的北京地区地下道路立交隧道围岩变形分析[J]. 土木工程学报, 2016, 49(S2): 103-106.
Yang Sanzi Zhang Dingli Su Jie. Numerical analysis of the surrounding ground deformation in interchange tunnel for underground road in Beijing. 土木工程学报, 2016, 49(S2): 103-106.
