虚拟场地上杭州地铁隧洞开挖数值模拟对比  

The contrast of numerical simulation for the tunnel No.1 of Hangzhou subway excavated on the virtual situ

作　　者：丁伯阳[1] 尹立奇[1] 

机构地区：[1]浙江工业大学减灾防护工程研究所,浙江杭州310032

出　　处：《浙江工业大学学报》2009年第6期680-684,共5页Journal of Zhejiang University of Technology

摘　　要：通过根据杭州市20 000多个综合钻孔资料,利用MapX组成的计算机虚拟场地,并在其上集成了ABAQUS等成熟的计算机软件.针对盾构施工法的特点,提出了一种简化的平面有限元模拟方法,编制了相应的计算程序.该方法能够模拟盾构施工过程中的开挖.对正在建设的杭州市地铁1#线上任意处,在计算机上点击鼠标后,即进行隧洞、衬砌的应力、应变分析与地面沉降计算.为了验证ABAQUS程序自动计算的准确性,再用ADINA软件建模分情况多次计算,对比ABAQUS程序自动计算所得的结果,并讨论了不同地面附加荷载情况下或不同刚度释放率下的衬砌应力情况以及地面沉降.According to more than 20 000 synthetic borehole data of Hangzhou,the computer virtual situ was carried out by use of MapX and mounting integrated mature calculation software such as ABAQUS.Considering the characteristics of shield construct ion,a simplified two-dimensional FEM modeling was proposed and an appropriate calculation program was worked out in this paper.It can carry out the stress and strain analyses of the tunnel and lining build,and also can do ground surface subsidence calculation.In order to verify the definition, we use ADINA software to calculate the same project in contrast to the anterior results, and discuss the stress of the lining and ground surface subsidence calculation in different ground load instances or different stiffness unload ratios.

关 键 词：虚拟场地 地铁开挖 应力分析 应变分析 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]