小净距曲线盾构隧道的三维数值模拟分析

Three-dimensional Numerical Simulation Analysis on the Shield Tunnel with Small Clear Distance Curve

小净距盾构隧道管片结构的内力、位移等受相邻盾构隧道管片的影响较大,本文通过对软岩地区小净距曲线(最小转弯半径为80m)盾构隧道的三维数值模拟的受力特性分析,得出了小净距曲线盾构隧道管片的内力、位移变化特性,其结果可为类似工程的设计、施工提供相应的参考。

The internal force and displacement of the small clear distance shield tunnel segment are greatly influenced by its adjacent shield tunnel segment. By analyzing the mechanical characteristics of the small clear distance shield tunnel with a minimum turning radius of 80 m in soft rock layers, the internal force and displacement variation characteristics of the shield tunnel were given in the paper. The study can provide corresponding reference for design and construction of similar projects.