类矩形盾构壳体与土相互作用下周边地层变形模式

doi:10.13722/j.cnki.jrme.2016.1054

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Abstract

From the angle of strata-deformation ability，this paper is aimed at evaluating the promotion value of a new kind of quasi-rectangular shield method. Based on the domestic first quasi-rectangular shield tunnel worksite test facilities，this paper proposes the finite element method which can simulate the physical process of the interaction of soil and quasi-rectangular shield shell to study the deformation mechanism of surrounding strata. An in situ test project with a complete testing program was then established. Finally，the surrounding strata deformation pattern under the interaction of soil and shield shell has been built. The results of the study prove that： strata deformation pattern on the vertical direction of shield tunneling can be divided into compaction expansion stage and resilient contraction phase，and strata deformation pattern on the direction of shield tunneling is greatly influenced by quasi-rectangular shield back earth on the flat shell.

Key words： tunnelling engineering quasi-rectangular shield tunneling construction strata deformation pattern in-situ test

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	Articles by authors
	JI Chang1
	ZHOU Shunhua1
	ZHU Yaohong2
	WANG Liushan3
	SI Jinbiao1

Cite this article:

JI Chang1,ZHOU Shunhua1,ZHU Yaohong2, et al. Surrounding strata deformation pattern under the interaction between shell of quasi-rectangular shield and soft soil[J]. , 2017, 36(S1): 3644-3655.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.1054 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS1/3644

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