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。本文采用三维弹塑性有限元,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 the 3D elasto-plastic FEM to simulate the shield advance is the most effective method to research the ground movement during the construction of tunnel. Based on the simulating of the actual construction situation, the influence on the old tunnel when new tunnel is perpendicularly constructed under the old one has been researched by using 3D elasto-plastic FEM. The research result shows that advance force and stability ratio N are the main factors controlling the deformation of old tunnel.
出处
《现代隧道技术》
EI
2001年第3期29-33,共5页
Modern Tunnelling Technology
关键词
垂直交叉隧道
质构施工
老隧道变形
计算分析
Perpendicularly crossing tunnel
Shield construction
Deformation of old tunnel
Calculation & Analysis
