通缝拼装盾构隧道衬砌结构抗倒塌性能的试验研究

doi:10.13722/j.cnki.jrme.2015.0989

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Abstract

For the failure mechanism of straight joint shield tunnel lining structure under side-unloading conditions，a quasi-static test method is proposed. And a full-scale test of anti-collapse property is completed. Based on the test results and phenomena，the whole bearing process of lining structure were analyzed. The failure mode，ultimate bearing capacity and overall safety of lining structure were discussed. Through experiments and calculations：the failure of lining structure is a beam hinge mechanism，while sufficient plastic hinges appear，the ultimate bearing capacity of the structure can be estimated by virtual work theory. Using load reserve ratio as a safety indicator，the overall safety factor of lining structure under side-unloading conditions is 1.62.

Key words： tunnelling engineering collapse capacity robustness full-scale test

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	LIU Xian
	HUANG Xiaodong

Cite this article:

LIU Xian,HUANG Xiaodong. EXPERIMENTAL STUDY OF COLLAPSE CAPACITY OF STRAIGHT JOINT SEGMENTAL TUNNEL LINING STRUCTURE[J]. , 2015, 34(S2): 3703-3714.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.0989 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3703

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