浅埋顶管应力及周围岩土性状扰动的有限元分析  

Pipe Stress Characters and Disturbance to the Surrounding Rock on Shallow Pipe-jacking by Finite Element Method

作　　者：涂向阳 杨转运[2] 吴汉辉[2] 刘会[2] 

机构地区：[1]广东省中山市交通局交通建设指挥部,广东中山528400 [2]四川建筑职业技术学院,四川德阳618000

出　　处：《非开挖技术》2007年第2期93-95,共3页China Trenchless Technology

摘　　要：借助有限元软件对顶管施工进行三维弹塑性分析，分析时综合考虑多重非线性的影响，建立了比较精确地反映实际构件受力特性的分析模型。模拟了顶管对土体变形和管道体应力产生的影响，探讨了浅埋曲线顶管的管道应力变化情况，并研究了顶管上层土体不同深度对地表变形的影响作用。A three-dimensional elastic-plastic analysis model of pipe-jacking, reflecting the actual characteristics of the mechanical component using finite element software for analysis, was established, and the impact of multiple nonlinear was analyzed in this model. Some key issues including deformation and impact of stress of the soil and pipe-jacking were simulated. And then pipe stress changing and the upper surface deformation effect by different soil depths, on constructing extra-shallow-underground-pipe jacking with curve, were discussed in this paper.

关 键 词：混凝土顶管 有限元 应力 地表变形 

分 类 号：U175[交通运输工程]