新隧道垂直穿越已建隧道的计算分析  

Calculation Analysis of the Deformation of the Existing Tunnel Influenced by the New Tunnel Underpassing

作　　者：李强[1] 曾德顺[1] 

机构地区：[1]同济大学特种土木工程技术研究所

出　　处：《地下工程与隧道》2001年第2期14-18,共5页Underground Engineering and Tunnels

摘　　要：采用三维有限元模拟盾构推进的过程,是研究盾构施工中土层移动的最有效的手段,在真实模拟施工情况的基础上,研究了新隧道从老隧道下面垂直穿过时,对老隧道的变形影响情况。研究表明,推进力和稳定比 N 是影响老隧道变形的主要因素。Using three dimensional finite element method to simulate the shield tunneling is the most efficient measure to study the ground movement during shield tunneling. By using three dimensional elastic-plastic finite element method to simulate the shield tunneling factually, the paper introduces the study of impact on deformation of existing tunnel when a new tunnel crosses perpendicularly under the existing tunnel. The study shows the driving force and the stabilization ratio N are the main factors that may affect the deformation of the existing tun- nel.

关 键 词：隧道 有限元 稳定系数N 计算分析 已建隧道 变形影响 盾构施工 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]