摘要
依托孟加拉卡纳普里河底隧道大直径泥水盾构工程,对盾构始发大型钢套筒设计及变形控制进行研究。研究表明,钢套筒始发在大大降低了涌水涌砂风险的同时,也存在自身变形,失稳的风险。通过对大直径钢套筒不同始发阶段的力学行为进行数值模拟,得到了钢套筒始发过程中变形大、容易失稳的位置,并给出了套筒变形防控措施和监测预警方案。
Based on the large diameter slurry shield project of the bottom tunnel of Karnaphuli river in Bangladesh,the large-scale steel sleeve design and deformation control of the shield launching are studied.The research shows that the steel sleeve initiation greatly reduces the risk of water and sand gushing,but also has the risk of deformation and instability.Through numerical simulation of the mechanical behavior of large diameter steel sleeve at different initiation stages,the positions of large deformation and easy instability in the initiation process of steel sleeve are obtained,and the prevention,the control measures,monitoring and early warning schemes of sleeve deformation are given.
作者
何源
钟涵
许超
HE Yuan;ZHONG Han;XU Chao(China Communications Second Navigational Bureau Third Engineering Co.,Ltd.,Zhenjiang,Jiangsu 212021,China;National Enterprise Technology Center of CCCC Second Harbor Engineering Co.,Ltd.,Wuhan,Hubei 430040,China)
出处
《施工技术》
CAS
2019年第S01期715-718,共4页
Construction Technology
关键词
泥水盾构
始发
大型钢套筒
设计
变形控制
slurry shield
initiating
large-scale steel sleeve
design
deformation control
作者简介
何源,国家一级注册建造师,E-mail:527876391@qq.com
