拱北隧道大直径曲线管幕顶管顶力研究

doi:10.13722/j.cnki.jrme.2017.0127

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Abstract The load jacking the curved pipe roof supporting the large diameter Gongbei tunnel is analyzed. The major components and the impact factors of the jacking force along a curved alignment are discussed. The calculated jacking load based on the design codes of China and Japan is compared with the field measurement and the difference is investigated. The equation for estimating the front face resistance during slurry pipe jacking is recommended. The side frictional resistance and friction coefficient are suggested based on the field measurement to the pipe roof of the tunnel in Gongbei. A formulation for predicting the total jacking force for segmented curved pipe is developed based on the force equilibrium analysis. The analysis shows that the value of unit side resistance and the interface frictional coefficient of steel pipes with lubrication are significantly smaller than that of concrete pipes. The estimated jacking load using the equation derived in this study matches the field measurement well.

Key words： tunnelling engineering curved pipe roof pipe jacking jacking force face resistance；frictional resistance

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	Articles by authors
	SHI Peixin1
	YU Caicheng1
	PAN Jianli2
	LIU Wei1

Cite this article:

SHI Peixin1,YU Caicheng1,PAN Jianli2, et al. Analysis on the jacking load of the curved pipe roof supporting the large diameter Gongbei tunnel[J]. , 2017, 36(9): 2251-2259.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.0127 OR http://www.rockmech.org/EN/Y2017/V36/I9/2251

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