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Stiffness checking and reinforcement of tunnel lining with cracks(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年01期
Page:
64-68
Research Field:
Publishing date:
2009-01-20

Info

Title:
Stiffness checking and reinforcement of tunnel lining with cracks
Author(s):
WANG Hualao1; 2;  LI Ning1
1. School of Water Resources and Hydraulic Power, Xian University of Technology, Xian 710048, Shaanxi, China; 2. The First Highway Survey and Design Institute of China Co Ltd, Xian 710075, Shaanxi, China
Keywords:
tunnel engineering;  crack;  reinforcement design;  stiffness checking
PACS:
U451.4
DOI:
-
Abstract:
In a tunnel, the cracks soon appeared on the linings after its operation. The cracks were investigated, the basic parameters of the cracks were gotten, and the safety level of cracks was evaluated. The concrete stiffness reduction formula of the theory of stiffness degradation was used in checking the safe factor of the lining structure with cracks. The safety of the structure was analyzed, the sets arch structure was utilized to reinforce the tunnel lining, the safe factor of the reinforcement structure was calculated. The results show that the safe factor of the lining reinforced structure is 2.69, it can meet demand of Chinese standard Design Code of Highway Tunnel. 9 tabs, 6 figs, 11 refs.

References:

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Last Update: 2009-01-20