2101. Study on an engineering measure to improve internal explosion resistance capacity of segmental tunnel lining structures

Yuetang Zhao1, Cheng Chu2, Yijun Yi3

College of Defense Engineering, PLA University of Science and Technology,
Nanjing, Jiangsu Province 210007, P. R. China

State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact,
Nanjing, Jiangsu Province 210007, P. R. China

2Corresponding author

E-mail: 1yuetangzh@163.com, 2iamcci@163.com, 3lgdxyyj@163.com

Received 12 December 2015; received in revised form 22 April 2016; accepted 18 May 2016

DOI https://doi.org/10.21595/jve.2016.16730

Abstract. With the increase of terrorist bombing attacks on subway systems, few research results could be traced on the internal explosion capacity of segmental tunnel linings. This paper presented some full-scale test results of segmental tunnel linings under internal explosions, and the deformation and failure patterns of segmental tunnel lining were analyzed and outlined, wherein the key factors and positions that dominate the damage of a segmental lining were figured out. Then based on a conceptual idea, attempts were made, by adding flexible damping cushions on the joints, to relieve the damage degree of contact area of bolts. At last, numerical simulations were performed and it was shown that, the localized failures of joint areas of tunnel segments could be relieved effectively after introduction of this measure, so the internal explosion resistance performance of segmental lining structures could be optimized and hence improved.

Keywords: segmental tunnel lining, internal explosion, full-scale test, joint area, flexible cushion.

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Cite this article

Zhao Yuetang, Chu Cheng, Yi Yijun Study on an engineering measure to improve internal explosion resistance capacity of segmental tunnel lining structures. Journal of Vibroengineering, Vol. 18, Issue 5, 2016, p. 2997‑3009.

 

© JVE International Ltd. Journal of Vibroengineering. Aug 2016, Vol. 18, Issue 5. ISSN 1392-8716