供热管道检查井开挖数值研究  

Numerical Investigation into the Excavation of Inspection Well of Heating Pipes

作　　者：谭灿 

机构地区：[1]中建五局第三建设有限公司西北分公司,陕西西安710065

出　　处：《贵州大学学报（自然科学版）》2014年第2期100-103,118,共5页Journal of Guizhou University:Natural Sciences

基　　金：教育部博士点基金(20123514120005)

摘　　要：采用ABAQUS有限元软件,建立了供热管道检查井三维模型。通过对拟做基坑开挖方案的数值模拟,得到了基坑开挖过程中侧壁和支护结构的变形和受力情况。研究结果表明:基坑第二和第三层开挖时,土层中间位置的土体变形较大;基坑开挖完成后第二层支护结构混凝土拉压应力均较大,建议适当提高支护结构强度,并加强施工过程中的基坑侧墙土体变形控制。By using the ABAQUS finite element program,three-dimensional model of inspection well was established. Based on the numerical simulation of the excavation of inspection well of heating pipes,deformation of side wall and stress of the supporting structure during the excavation were obtained. The conclusions indicate that,the soil deformation of centre position of the side wall is larger during the excavation of the second and third step. Tensile and compressive stress of the supporting structure at the centre position is larger. It is suggested that during the construction of the inspection well,strength of supporting structural should be increased,and the deformation control of centre position of the side wall must be strengthened.

关 键 词：检查井 开挖 数值模拟 

分 类 号：TU463[建筑科学—结构工程]