Impact of Broken Rock behind Expressway Tunnel Lining on Structure Safety

Zhu, Chun Sheng; Yang, Xiaoqi; Lai, Hong Peng

doi:10.4028/scientific5/amr.446-449.2118

Cited by 2 publications

(2 citation statements)

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“…It will result in lining crack, water leakage, loss or even collapse, and the operation safety of tunnel will be threatened. As the cavity of secondary lining changes the stress state of structure, and increases the possibility of structural damage, the lining usually cannot continue operation, and safety and durability of tunnel lining will be affected [2,3]. The cavity of secondary lining must be detected, and its location and scale must be found.…”

Section: Introductionmentioning

confidence: 99%

Detection and Safety Evaluation on Cavity in Tunnel Lining

2013

AMM

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Due to the construction technology and concrete structure of tunnel, cavity can be engendered in the composite lining. To evaluate the influence of the cavity on tunnel lining, cavity must be first detected, and safety evaluation of tunnel structure can be taken with the detection results. With the tunnel engineering example, a typical section chosen has been checked, and the safety of cavity was evaluated. It can provide a reference method for the detection and safety evaluation on cavity in tunnel lining.

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Section: Introductionmentioning

confidence: 99%

Detection and Safety Evaluation on Cavity in Tunnel Lining

2013

AMM

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“…The existing tunnels in service have suffer various damage by the action of geological conditions, terrain condition, climate condition and design, construction, operation factors. The cavity behind lining is a factor cannot be ignored, it may result in lining verge occurs crack, crack, unstable, drop and even suddenly collapse [1]. If the cavities and the conditions in the initial stage of tunnel defect appearing or developing can be accurately determined, it would be extremely advantage to early diagnose and effectively maintain of the tunnel defect.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Tunnel Defect Characteristic Caused by Cavities behind Lining

Wei

Liao

Ding

et al. 2011

AMR

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Back-cavity of lining is a main factor resulting in tunnel defect. But as the concealment of the cavities behind linings, it is hard to judge the existence and conditions of cavities. In this paper numerical simulation analysis was carried out to analyze the mechanics of lining when there were different size of cavities which located in vault, hance, sidewall or foot of sidewall respectively, then to study the tunnel defect caused by back-cavity and set up corresponding relationship between cavity condition and tunnel defect. The research has some auxiliary help for rapid diagnosis of tunnel defect according to defect characteristics observed in site inspection.

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Impact of Broken Rock behind Expressway Tunnel Lining on Structure Safety

Cited by 2 publications

References 0 publications

Detection and Safety Evaluation on Cavity in Tunnel Lining

Detection and Safety Evaluation on Cavity in Tunnel Lining

Analysis of Tunnel Defect Characteristic Caused by Cavities behind Lining

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