Dynamic response of underground arch structure under lateral point blast loads

ZHOU Zhongxin; JIN Fengnian; YUAN Xiaojun; CHEN Hailong; ZHOU Jiannan; XU Ying; KONG Xinli

doi:10.11883/bzycj-2016-0295

Volume 38 Issue 3

Feb. 2018

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Article Navigation > Explosion And Shock Waves > 2018 > 38(3): 639-646

ZHOU Zhongxin, JIN Fengnian, YUAN Xiaojun, CHEN Hailong, ZHOU Jiannan, XU Ying, KONG Xinli. Dynamic response of underground arch structure under lateral point blast loads[J]. Explosion And Shock Waves, 2018, 38(3): 639-646. doi: 10.11883/bzycj-2016-0295

Citation:

ZHOU Zhongxin, JIN Fengnian, YUAN Xiaojun, CHEN Hailong, ZHOU Jiannan, XU Ying, KONG Xinli. Dynamic response of underground arch structure under lateral point blast loads[J]. Explosion And Shock Waves, 2018, 38(3): 639-646. doi: 10.11883/bzycj-2016-0295

Citation:

ZHOU Zhongxin, JIN Fengnian, YUAN Xiaojun, CHEN Hailong, ZHOU Jiannan, XU Ying, KONG Xinli. Dynamic response of underground arch structure under lateral point blast loads[J]. Explosion And Shock Waves, 2018, 38(3): 639-646. doi: 10.11883/bzycj-2016-0295

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Dynamic response of underground arch structure under lateral point blast loads

doi: 10.11883/bzycj-2016-0295

State Key Laboratory for Disaster Prevention and Mitigation of Explosion and Impact, College of Defense Engineering, The Army Engineering University of PLA, Nanjing 210007, Jiangsu, China

Received Date: 2016-09-27
Rev Recd Date: 2017-03-28
Publish Date: 2018-05-25

Abstract

Abstract

Firstly, the distribution of load and displacement of the free surface of the arch were obtained by using the geometrical relation and the empirical formula, and the related parameters were discussed. Secondly, the modified soil-structure interaction model was used to solve the vibration equation of the arch orthogonally, and get the analytic solution of the elastic dynamic response of the structure under arbitrary angle loading. Then the time histories curve of displacement, velocity and acceleration were predicted. The analysis results indicate that the responses of the arch are greatly influenced by the acoustic impedance. The larger the acoustic impedance, the greater the displacement, velocity and acceleration of the structure. So the protective structures are better to be constructed in a site with low acoustic impedance.
- arbitrary angle,
- point explosion,
- dynamic response,
- soil-structure interaction,
- buried arch structure

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References(11)

References

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