跨地裂缝地铁隧道竖向地层压力计算方法探讨

doi:10.13722/j.cnki.jrme.2015.1461

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Abstract Ground fissure is a kind of special geological hazard resulting in the vertical dislocation of strata and ground surface rupture，which may cause severe harm to engineering structures. Unlike the ordinary stratum stress caused by the soil gravity，the additional soil pressure induced by the ground fissure activity is different and often causes the underground structure to appear longitudinal tension crack and even direct shear failure. Determining the effective strata load in the zone with ground fissures is the key to the structure design of underground engineering crossing over the ground fissure belts. The metro in Xi?an crossing the ground fissures is studied in this paper. A load-structure model between the metro tunnel and surrounding soil in the active ground fissure environment was established on the basis of mechanism analysis and results of physical model test. The model was used to calculate the overlying vertical formation pressure of metro tunnel structure crossing ground fissures. A method of calculating the overlying load on the metro tunnel caused by the ground fissure activity was put forward and compared with the calculation method based on A. Marston principle and the method from the Code for metro design in China. The method was verified with the model test results.

Key words： tunnelling engineering ground fissure metro tunnel strata pressure calculation method

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	HUANG Qiangbing1
	2
	YANG Tao1
	WANG Zhen3
	FANG Wendong1

Cite this article:

HUANG Qiangbing1,2,YANG Tao1, et al. Calculation of vertical strata load of metro tunnel crossing ground fissure zone[J]. , 2016, 35(8): 1705-1711.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.1461 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/I8/1705

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