Earthquake Damage Evaluation of Tunnels

Abstract:

The state of art of tunnel earthquake damages and tunnel earthquake damage mechanism are briefly introduced in this paper. According to tunnel’s traffic function and damage descriptions based on the investigation, tunnel damages are divided into five grades: no damage, minor damage, moderate damage, major damage and collapse, and their corresponding damage index range and characteristic values are defined. The influence of tunnel materials in Kobe earthquake and Chi-Chi earthquake are collected in this paper, and the damage grades are determined based on the performance in the earthquake. After comparative analysis, the seismic intensity, overburden depth, rock classification, distance to faults and the tunnel length are chosen as the seismic damage influence factors. A formula for tunnel seismic damage evaluation is deducted using these factors and the least square method and with the modification of construction time, seismic fortification intensity and portal stability. The damage of four tunnels is evaluated using the derived formula, and the results are the same with that of static and dynamic methods. It shows that the method provided in this paper is effective, reliable.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1402-1409
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1402
• Online since: May 2012
• Authors: Jun Qi Lin, Xiao Qing Fang, Jin Long Liu
• Keywords: Damage Evaluation, Damage Mechanism, Earthquake, Regression Statistics, Tunnel

References

[1] Dowding C. H., and Rozen A. (1978), Damage to rock tunnels from earthquake shaking. Journal of the Geotechnical Engineering Division, 2, 175-191.

DOI: 10.1061/ajgeb6.0000580

[2] Shunzo Okamoto, Choshiro Tamura (1973), Behavior of Subaqueous Tunnels during Earthquake, Earthquake Engineering and Structural Dynamics, 1, 253-266

DOI: 10.1002/eqe.4290010306

[3] Sunil Sharma, William R. Judd (1991), Underground opening damage from earthquake, Engineering Geology, 30, 263-275.

[4] Robert Rowe (1992), tunnel engineering in earthquake area, Tunnels and Tunneling, 12, 41-44.

[5] Pan Changshi (1996), the survey of the study on earthquake resistance of tunnel and underground structure, the World Tunnel, 5, 7-16.

[6] Zhang Yu-e, Bai Baohong, Zhang Yaohui, Wang Zanzhi (2003), Study on subway tunnel's behavior due to seismic damage and methods of analyzing seismic response and earthquake-proof means, Journal of Vibration and Shock, 22:1, 70-74.

[7] Jin-Hung Hwang, Chih-Chieh Lu (2007), Seismic capacity assessment of old Sanyi railway tunnels. Tunneling and Underground Space Technology, 22:7, 433-449.

DOI: 10.1016/j.tust.2006.09.002

[8] W. L. Wang, T. T. Wang, J. J. Su, C. H. Lin, C. R, Seng, T. H. Huang (2001), Assessment of damage in mountain tunnels due to the Taiwan Chi-Chi Earthquake, Tunneling and Underground Space Technology, 16, 133-150.

DOI: 10.1016/s0886-7798(01)00047-5

[9] Ministry of Communications, P. R. C. (1990), Specifications of earthquake resistant design for railway engineering of China (JTJ 004—89), Beijing, People communications publishing house. (In Chinese).

[10] Ministry of Communications, P. R. C. (2006), Specifications of Earthquake Resistant Design for Highway Engineering of China(GB50111-2006), Beijing, China planning publishing house. (In Chinese).