Damage characteristics and influence factors of mountain tunnels under strong earthquakes |
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| Authors: | Zhiyi Chen Cheng Shi Tianbin Li Yong Yuan |
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| Institution: | (1) Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, 200092 Shanghai, China;(2) State Key Laboratory of Geo-Hazard Prevention and Geo-Environment Protection, Chengdu University of Technology, 610059 Chengdu, China |
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| Abstract: | A total of 81 mountain tunnels that were damaged in 10 strong earthquakes are studied. They are classified into six typical
damage characteristics: lining cracks, shear failure of lining, tunnel collapse caused by slope failure, portal cracking,
leaking, and deformation of sidewall/invert damage. Further study and discussion are carried out on influencing factors for
mountain tunnels, including seismic parameters, structural information, and rock conditions. Suggestions are also made regarding
seismic resistance and reduction. |
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