砂姜粘土地层双排顶管施工的沉降变形规律  

Settlement and Deformation Law of Double Row Pipe Jacking Construction in Shajiang Clay Stratum

作　　者：苏妮 曹广勇[2] SU Ni;CAO Guangyong(Anhui University of Architecture College of Civil Engineering,Hefei Anhui 230601,China;Anhui University of Architecture Anhui Key Laboratory of Building Structure and Underground Engineering,Hefei Anhui 230601,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601 [2]安徽建筑大学建筑结构与地下工程安徽省重点实验室,安徽合肥230601

出　　处：《佳木斯大学学报（自然科学版）》2021年第6期6-9,共4页Journal of Jiamusi University：Natural Science Edition

基　　金：国家自然科学基金青年科学基金项目(52004003)。

摘　　要：针对双排顶管施工互相之间的干扰作用对地层变形的影响,以徐州市第二地面水厂工程顶管穿越徐洪河段砂姜黏土地层工程实践作为工程背景。利用Midas/GTS模拟结果与室内试验对双排平行顶管施工过程中的沉降变形与横向间距的影响进行研究的方法,得到该类工程不同横向间距下的沉降规律与错位施工地层变形控制的重点。双排顶管工程错位施工对先行管施工和管道轴线的沉降影响最大,是实际工程中的重点实时监测部位。该结果对类似工程具有重要的借鉴意义。Aiming at the influence of mutual interference of double row pipe jacking construction on stratum deformation,this paper takes the engineering practice of pipe jacking crossing Xuhong river section in Xuzhou second surface water works as the engineering background.Based on Midas/GTS simulation results and laboratory tests,this paper studies the influence of settlement deformation and transverse spacing in the process of double row parallel pipe jacking construction,and obtains the settlement law under different transverse spacing of this kind of project and the key points of stratum deformation control in dislocation construction.The dislocation construction of double row pipe jacking project has the greatest impact on the construction of advance pipe and the settlement of pipeline axis,and it is the key real-time monitoring part in the actual project.The results have important reference significance for similar projects.

关 键 词：双排顶管 控制参数 室内模型 数值模拟 

分 类 号：TU864[建筑科学]