浅埋隧道穿越建筑物桩基的施工力学分析

浅埋隧道开挖带来的周围环境影响问题备受关注,应用有限元程序,以重庆武隆隧道出口段穿越汇邦制药厂厂房桩基础为工程背景,采用Drucker-Prager屈服准则,对隧道截桩施工引起桩基及隧道结构的变形与力学特性进行研究,分析隧道开挖对隧道结构及桩基的影响,全面追踪关键部位的变形过程及受力特征,为隧道顺利施工及确定合理的开挖、支护形式提供依据。

Mechanical Analysis on Construction of Shallow Tunnel Crossing Piles of Building

Excavation of shallow tunnel will influence surrounding environment seriously and should be treated strictly. By adopting FEM software with Drucker-Prager yield criteria and based on one shallow tunnel crossing the piled foundation of a building, research on the deformation and mechanical features of structures because of cutting piles during construction was carried out. According to calculation results in one typical section, the deformation procedures and mechanical features at key parts are analyzed, which can provide useful references for tunnel construction and rational excavation steps.