连拱隧道施工引起的地层位移分析  

Analysis of stratum displacements by multiple arch tunnel construction

作　　者：何川[1] 李永林[1] 林刚[1] 汪会帮[2] 

机构地区：[1]西南交通大学地下工程系,成都610031 [2]浙江省交通厅,杭州310004

出　　处：《岩土力学》2005年第4期612-616,共5页Rock and Soil Mechanics

摘　　要：采用三维有限元法,对连拱隧道软弱围岩洞口段进行了施工全过程数值模拟分析,得出了施工全过程地层位移的大小与分布规律,并用几何比1/20的相似模拟试验进行验证和补充,提出了该类隧道施工全过程的地层位移规律和施工中应重点关注的区域,对实际工程进行直接指导,并为同类工程提供参考。Based on a certain multiple arch tunnel project, the magnitudes and distributed regularities of stratum displacements have been attained through the numerical simulation analysis for the whole construction process of 40 m-length entrance section using 3D FEM, which is proved and given some necessary supplements through model test with the natural scale of 1:20. Therefore, the stratum displacements regularities and the key-attention zones during the whole construction process are put forward, which will have the direct guidance for the actual engineering works and reference for the similar project as well.

关 键 词：连拱隧道 地层位移 有限元 模拟试验 

分 类 号：U459[建筑科学—桥梁与隧道工程]