千枚岩隧道传统与新型支护结构现场对比试验研究

doi:10.13722/j.cnki.jrme.2016.0086

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Abstract Field tests of applying the I-beam steel arch and the steel grid-concrete core tube supporting structure for tunnels in phyllite and meizoseismal area were conducted. The tunnel is a vital portion of the high speed railway from Chengdu to Lanzhou，adjacent to Songpan town of Aba plateaus，Sichuan Province，and is located in the meizoseismal area of 5•12 Wenchuan earthquake. The settlement of surrounding rock，internal displacement of surrounding rock，pressure between surrounding rock and primary support，internal force of support arch， axial force of rock bolts，pressure between primary support and secondary lining，and strain of secondary lining in two different supporting structures were all measured and analyzed using the methods of field test and numerical simulation. It was suggested that the new type support structure played a significant role to prevent and control the large deformation of surrounding rock in similar geological conditions.

Key words： tunnelling engineering large deformation grid steel frame concrete core tube field contrast tests numerical simulation

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	Articles by authors
	XU Fei1
	LI Shucai1
	SHI Shaoshuai1
	LI Liping1
	WANG Weiming1
	2
	ZHANG Wei3
	ZHANG Qianqing1
	HE Peng1

Cite this article:

XU Fei1,LI Shucai1,SHI Shaoshuai1, et al. Field test comparison of traditional and new type supporting structures in a phyllite tunnel[J]. , 2017, 36(3): 609-621.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0086 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/I3/609

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