城市浅埋隧道施工性态的时空效应分析

Analysis of space-time effect for urban shallow tunneling by excavation

摘要: 基于弹 -黏塑性模型 ,使用所研制的三维有限元程序 ,对某浅埋城市隧道工程在开挖过程中地表和围岩变形以及围岩的稳定性的时空效应进行了分析和探讨。通过计算结果与现场量测结果的比较 ,文中的分析结果令人满意 ,为该工程施工提供了依据和指导作用 ,且具有一定的理论意义和实际意义。

Abstract: Based on elastic-viscoplastic model,the three dimensional finite element analysis code developed by the author is used to investigate the space-time effect of land subsidence as well as the deformation and the stability of surrounding rocks for an urban shallow tunneling.A comparison between the calculated and measured results has proved that these results are satisfactory and provide the basis and guidance for the practical engineering.