温州轨道交通M1线盾构隧道衬砌管片接头力学特性
刁维科
Mechanical Properties of Shield Tunnel Lining Segment Joint on Wenzhou Rail Transit Line M1
DIAO Weike
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作者信息:中铁第四勘察设计院集团有限公司，430063，武汉
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Affiliation:China Railway Siyuan Survey and Design Group Co., Ltd., 430063, Wuhan, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.01.005
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中图分类号/CLCN:U455.43
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栏目/Col:研究报告
摘要:
为研究温州轨道交通M1线地铁盾构隧道衬砌的极限抗弯承载力和接头变形能力，基于地铁盾构隧道变形的衬砌管片接头张开破坏试验，介绍了地铁衬砌结构接头破坏试验的研究内容，包括加载装置、荷载设计、测试内容，以及部分试验结果，并对试验进行了数值模拟分析。研究结果表明：正、负弯矩工况下，接头力学性态发展可大致分为线性增长、塑性发展和极限破坏3个阶段，极限破坏状态在正、负弯矩作用下的破坏模式并不相同。
Abstracts:
To study the ultimate bending bearing capacity and joint deformation ability of Wenzhou Rail Transit Line M1 shield tunnel lining, based on the opening failure test of the deformed lining segment joint of the shield tunnel, the research contents of metro lining structure joint failure test are introduced, including loading device, load design, test content and part of the test results. Numerical simulation analysis of the test is carried out. The results show that the development of joint mechanical behavior under positive and negative bending moments can be roughly divided into three stages: linear growth stage, plastic development stage and ultimate failure stage. The failure modes of ultimate failure state under positive and negative bending moments are different.
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