双圆盾构隧道施工的有限元模拟与分析

Finite Element Simulation and Analysis for the Construction Processes of DOT Shield Tunnel

采用三维非线性有限元法模拟了广州地铁某双圆盾构隧道试验段的实际施工过程,计算得到了地表沉降、土体内部变形、地基应力等结果,分析后得到了一些有益的结论,为完善盾构施工技术提供了计算依据,亦可为探索和完善广东软土地层中盾构隧道技术提供参考。

Based on the method of three-dimensional nonlinear finite element,the ground settlement,soil deformation,stress and other results are calculated in a metro tunnel model in this paper. Then some useful conclusions was obtained from the results,which can provide theoretical basis for the technology of shield constrction. These conclusions also can provide some reference for the shield tunnel in soft soil layer of Guangzhou.