摘要
以预应力矩形顶管为研究对象,通过建立预应力矩形顶管的精细化荷载-结构模型,针对有无预应力锚索及施设不同数量与布置方式的预应力锚索等情况,研究顶管管节发生不均匀沉降时的接缝张开行为,探明预应力锚索方案在控制不均匀沉降下管节张开上的效果,并给出了预应力锚索在管节横断面上的合理排布方式及施设位置。
The rectangular prestressed pipe-jacking is taken as the research object.A refined load-structure of the rectangular prestressed pipe-jacking is modeled for the presence or absence of prestressed anchor cables and the installation of different quantities and arrangements,which aims at the study of the joint dehiscence of pipe-jacking with uneven settlement.The effect of the prestressed anchor cables on joint dehiscence of pipejacking with uneven settlement is manifested,and the reasonable arrangement and installation location on the cross-section is given.
出处
《现代城市轨道交通》
2023年第9期46-52,共7页
Modern Urban Transit
基金
西南交通大学新型交叉学科培育基金(2682022KJ055)
中铁二院工程集团有限责任公司科学技术研究计划项目(院控KYY2019115(18-20))。
关键词
矩形顶管
预应力锚索
管节张开
张开控制
数值模拟
rectangular pipe-jacking
prestressed anchor cable
opening of pipe joint
opening control
numerical simulation
