粉砂土地层浅埋顶管下穿高速公路路面变形分析  

Analysis of Pavement Deformation of Shallow Buried Pipe Jacking Through Expressway in Silty Sand Soil Layer

作　　者：郭水 张良 刘淼 王利辉[2] 赵鑫[2] Guo Shui;Zhang Liang;Liu Miao;Wang Lihui;Zhao Xin(Beijing Municipal Construction Co.,Ltd.,Beijing 100079,China;Faculty of Architecture,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京市政建设集团有限责任公司,北京100079 [2]北京工业大学城市建设学部,北京100124

出　　处：《市政技术》2023年第2期59-64,72,共7页Journal of Municipal Technology

基　　金：国家自然科学基金面上项目(51978020)。

摘　　要：以某混凝土顶管下穿高速公路工程为例,采用ABAQUS有限元软件建立了三维数值模型,通过分析各施工阶段混凝土顶管的应力分布和损伤模型以及上覆路面的竖向位移变形,得出了顶管施工方法引起地面沉降的主要原因是施工过程中引起的各土层应力重分布的结论,为后续顶管施工的研究提供了参考。Taking a concrete pipe jacking underpass highway project as an example, a 3D numerical model was established by ABAQUS finite element software. By analyzing the stress distribution of concrete pipe jacking at each construction stage, damage model and the vertical displacement deformation of overlaying pavement, it is concluded that the main reason of ground settlement is the stress redistribution of each soil layer caused by construction process.It can provide reference for the subsequent research of pipe jacking construction.

关 键 词：顶管施工 粉砂土地层 路面变形 数值分析 

分 类 号：U463[机械工程—车辆工程]