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MODERN TUNNELLING TECHNOLOGY 2014, Vol. 51 Issue (3) :15-22    DOI:
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Statistics and Analysis of Influential Factors of Tunnel Damage Induced by the Wenchuan Earthquake
(1 Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031; 2 Sichuan Provincial Communications Department Highway Planning, Survey, Design and Research Institute, Chengdu 610041)
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Abstract  In order to analyze the influential factors of tunnel damages induced by an earthquake, the relative data of four tunnels seriously affected by the Wenchuan earthquake were collected and analyzed statistically, as well as calculated and verified through ANSYS software modeling. The results show that the main influential factors include the earthquake parameters (earthquake wave peak acceleration), the surrounding rock grade, overburden, faults intersecting with the tunnel, special tunnel structures, and so on. The damage to the lining is more serious if the earthquake wave peak acceleration is high, the rock mass is of a low grade, or the tunnel passes through faults. The damage to the lining is inversely proportional to the overburden depth. Stress easily concentrates at the special structures of a tunnel, resulting in worse damage.
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TAO Shuang-Jiang-1
2
Jiang-Ya-Jun-1
Keywords�� Wenchuan earthquake   Damage induced by an earthquake   Statistical analysis   Numerical modeling     
Abstract�� In order to analyze the influential factors of tunnel damages induced by an earthquake, the relative data of four tunnels seriously affected by the Wenchuan earthquake were collected and analyzed statistically, as well as calculated and verified through ANSYS software modeling. The results show that the main influential factors include the earthquake parameters (earthquake wave peak acceleration), the surrounding rock grade, overburden, faults intersecting with the tunnel, special tunnel structures, and so on. The damage to the lining is more serious if the earthquake wave peak acceleration is high, the rock mass is of a low grade, or the tunnel passes through faults. The damage to the lining is inversely proportional to the overburden depth. Stress easily concentrates at the special structures of a tunnel, resulting in worse damage.
Keywords�� Wenchuan earthquake,   Damage induced by an earthquake,   Statistical analysis,   Numerical modeling     
published: 2013-11-21
Cite this article:   
TAO Shuang-Jiang-1, 2 , Jiang-Ya-Jun-1 .Statistics and Analysis of Influential Factors of Tunnel Damage Induced by the Wenchuan Earthquake [J]  MODERN TUNNELLING TECHNOLOGY, 2014,V51(3): 15-22
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