基于ALE方法的盾构对接施工钢环顶伸数值模拟及稳定性分析  

Simulation and stability analysis for steel tube extending in shield butting construction based on the ALE method

作　　者：王欢欢[1,2] 杨丽丽[3] 杨勋[1,2] 金先龙[1,2] 

机构地区：[1]上海交通大学机械系统与振动国家重点实验室,上海200240 [2]上海交通大学机械与动力工程学院,上海200240 [3]上海应用技术学院,上海201400

出　　处：《振动与冲击》2015年第19期91-97,102,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(51475287);国家自然科学基金项目(11272214);国家高技术研究发展计划(863)项目(2012AA01A307)

摘　　要：基于任意拉格朗日-欧拉有限元方法(ALE),建立了盾构对接施工钢环顶伸的三维数值模型,解决了土体变形流动导致网格畸变的问题,实现了钢环-土体动态耦合过程。分析了钢环顶伸过程中,钢环前侧阻力变化、钢环应力应变状况。研究了不同的顶伸速度下,对钢环顶伸的影响。在充分考虑接触及重力条件下,分析了钢环轴向及侧向的稳定性状况。研究结果可为盾构对接施工方案设计提供参考依据。Based on arbitrary Lagrangian-Eulerian（ ALE） method,a three-dimensional finite element model for steel tube extension in shield machine butting was established. The problem of mesh deformation distortion caused by soil flow deformation was solved,the steel tube-soil dynamic coupled process was realized. Resistance change and stress-strain conditions of steel tube during the extension was analyzed. Simulation of steel tube extending under different velocities was implemented. Axial stability and lateral stability of steel tube were analyzed considering contact and gravity status. The results provided a reference for the design of shield butting construction.

关 键 词：任意拉格朗日-欧拉方法 盾构对接 钢环顶伸 稳定性 

分 类 号：U455.4[建筑科学—桥梁与隧道工程] TP391.9[交通运输工程—道路与铁道工程]