通透肋式拱梁隧道变形机理及力学特征分析

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Abstract Research purposes:Based on the analyses of stability control factors of shallow－buried tunnel adjacent to mountain and the disadvantage of traditional design scheme，a new type of tunnel structure，permeable tunnel with ribbed arch beam，is presented． Researching the way for knowing the deformation mechanism and mechanical characteristics of permeable tunnel with ribbed arch beam can make the development trend of rock－slope mass during excavating．It can provide the basis for taking the preventive measures．

Research conclusions: With practical engineering，the design principle and structural characteristics of this tunnel are expounded; and on the basis of the study of the rock － slope mass structure features and deformation failure characteristics during this tunnel excavation，the deformation failure mechanism of this tunnel is elaborated; the interaction mechanics characteristic of the surrounding rock－supporting structure is systematically studied by numerical simulation method．The result shows that the coordination effect of the both is good，and the supporting strength is improved on the stress concentration area．

Key words： permeable tunnel with ribbed arch beam design principle deformation failure mechanism numerical simulation method

Received: 21 February 2011

PACS:

U238

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	ZHANG Min
	JU Neng－pan

Cite this article:

ZHANG Min,JU Neng－pan. Surrounding Rock—Supporting Structure Mechanics Analysis of Permeable Tunnel With Ribbed Arch Beam[J]. 铁道工程学报, 2011, 28(6): 47-51.

URL:

http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2011/V28/I6/47

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