摘要
针对北京地铁五号线既有盾构隧道和北新桥地铁车站基坑的相互作用问题,运用AN-SYS有限元软件的基本理论知识,结合场地的水文地质和工程地质条件,并按照不同的工况,建立了三维数值模型,并在此基础上进行了施工过程的模拟,通过对结果的对比和分析,可以清楚地了解到在不同施工状态下,基坑周围土体、支护结构及既有盾构隧道之间相互作用的过程和机理,以及由此引起的隧道变形的分布与变化规律.
This paper aims at the interaction problem between existed shield tunnel and the foundation pit of the Beixingqiao station in Beijing No.5 subway line.Using ANSYS elementary theory knowledge,combined with the hydrogeological and engineering geological conditions,and according to the different working conditions,this paper build up the three dimensional numerical model and carry on the simulation of the construction process on this basis.By comparison and analysis of the result,we can clearly understand the process and the mechanisms of the interaction between surrounding soil body of foundation pit,the bracing structure and the current shield tunnel under different construction appearance.the regular of distribution and change of the tunnel deformation are also concerned.
出处
《河南理工大学学报（自然科学版）》
CAS
2011年第3期326-330,共5页
Journal of Henan Polytechnic University（Natural Science）
关键词
基坑施工
隧道变形
三维有限元
可视化数值模拟
construction of foundation pit
tunnel deformation
three-dimensional finite element
visual numeric simulation
