盾构隧道施工正面土压力的有限元分析  

Finite Element Simulation for the Shield Tunnel Excavation Face Support Pressure

作　　者：蒋徐进[1] 

机构地区：[1]广东省建筑科学研究院,广州510500

出　　处：《广东土木与建筑》2012年第12期42-44,共3页Guangdong Architecture Civil Engineering

摘　　要：在盾构隧道掘进过程中,开挖面的正面土压力是一个极为关键的控制参数。本文结合广州软弱地层及地下水丰富的情况,采用孔隙水和土骨架的完全耦合理论,对盾构隧道在粘土层中施工的正面土压力进行了有限元分析,提出了粘土地层中盾构隧道支护压力的适当范围。In shield tunneling process,the excavation face support pressure is a very important controlling parameter.Combined with the Guangzhou soft stratum and abundant ground water situation,the appropriate scope of the shield tunnel excavation face support pressure in clay stratum has been analyzed and put forward by using the pore water and soil skeleton of the fully coupled theory and finite element analysis of the positive earth pressure in the clay stratum.

关 键 词：盾构隧道 土仓压力 水土耦合 粘土层 ABAQUS 有限元 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]