铁道标准设计2016，Vol.60Issue(10)：88-93,6.DOI:10.13238/j.issn.1004-2954.2016.10.020
盾构隧道管片上浮的机制研究
Research on Upward Moving Mechanism for Segment of Shield Tunnel
摘要
Abstract
During the process of shield tunneling, it is inevitable to disturb the surrounding stratum and cause surface displacement. The key to control surface subsidence is to effectively fill the gap of the shield tail. But the lining segment is prone to partial or wholly upward moving in shield driving and shield tail gap grouting. In this paper, the upward moving of segment structure is classified into four categories in terms of stress state in the construction process, including the upward moving when the segment is closed to form a ring, the upward moving when shield is advancing, the upward when segment is off the shield tail and the upward moving after grout is initially set. And the calculation method for segment upward moving is proposed from the time when segment is off the shield tail to the time when grout is initially set. In addition, measures to control upward moving of segment are put forward. The research results may provide technical references against segment upward moving in design and construction of shield tunnel.关键词
盾构隧道/管片上浮/力学分析/控制措施Key words
Shield tunnel/Segment upward moving/Mechanical analysis/Control measures分类
交通工程引用本文复制引用
张君,赵林,周佳媚,刘欢,张迁..盾构隧道管片上浮的机制研究[J].铁道标准设计,2016,60(10):88-93,6.基金项目
中铁建大桥工程局科研委托项目(2015H01374) （2015H01374）
