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Three-dimensional Numerical Analysis of the Effect of Voids onExisting Road Tunnel Linings
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[1]ZHANG Yun-liang,NIE Zi-yun,LI Feng-xiang.Three-dimensional Numerical Analysis of the Effect of Voids onExisting Road Tunnel Linings[J].Journal of Zhengzhou University (Engineering Science),2013,34(02):94-98.[doi:10.3969/j.issn.1671-6833.2013.02.024]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 34 Number of periods: 2013 02 Page number: 94-98 Column: Public date: 2013-03-28
Title:
Three-dimensional Numerical Analysis of the Effect of Voids onExisting Road Tunnel Linings
Author(s):
ZHANG Yun-liang1; NIE Zi-yun1; LI Feng-xiang2
1.School of Civil Engineering,Central South University , Changsha 410004, China;2.China Railway Engineering Design andConsultant Group，Beijing 100055，China
Keywords:
road tunnel; linings ; voids; plane analysis ;  three-dimensional;  numerical analysis
CLC:
U451.5
DOI:
10.3969/j.issn.1671-6833.2013.02.024
Abstract:
Voids behind linings,which are a common form of road tunnel disease,have great danger to the sta-bility of tunnel linings. The previous researches concentrated on plane analysis, researchers considered that lar-ger voids would lead to loop tensile stress at the out edge of the lining which might cause longitudinal crack;However,through establishing three-dimensional finite element model compared with plane analysis,the articleputs forward that voids will leaded to longitudinal tensile stress but loop tensile stress at the out edge of the lin-ing,which possible cause annular cracking. And based on three-dimensional numerical analysis,obtaining theeffect of void behind linings under different surrounding rock and different void locations.
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