Directional water pressure blasting of Jamuna bridge  and its numerical simulation

ZHANG Qinbin; CHENG Guihai; XU Zhonghui; LING Yuheng; JIANG Wenju; CHEN Shanjiang

doi:10.11883/bzycj-2018-0089

Volume 39 Issue 6

Jun. 2019

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ZHANG Qinbin, CHENG Guihai, XU Zhonghui, LING Yuheng, JIANG Wenju, CHEN Shanjiang. Directional water pressure blasting of Jamuna bridge and its numerical simulation[J]. Explosion And Shock Waves, 2019, 39(6): 065201. doi: 10.11883/bzycj-2018-0089

Citation:

ZHANG Qinbin, CHENG Guihai, XU Zhonghui, LING Yuheng, JIANG Wenju, CHEN Shanjiang. Directional water pressure blasting of Jamuna bridge and its numerical simulation[J]. Explosion And Shock Waves, 2019, 39(6): 065201. doi: 10.11883/bzycj-2018-0089

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Directional water pressure blasting of Jamuna bridge and its numerical simulation

doi: 10.11883/bzycj-2018-0089

1.
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, Guangxi, China
2.
Southwest University of Science and Technology, Mianyang 621000, Sichuan, China

Received Date: 2018-03-20
Rev Recd Date: 2018-05-31

Available Online: 2019-04-25

Publish Date: 2019-06-01

Abstract

Abstract

In this study we investigated the mechanism of water pressure blasting in the thin-walled bridge pier, taking the water pressure directional blasting demolition project of Jamuna bridge as the research object and using the explicit dynamics analysis software to simulate the crushing process of the water pressure blasting in the bridge pier. The numerical simulation results show that the failure of the bridge pier mainly depends on the explosive shock wave, the detonation gas, the reflected tension wave and the high-speed flow. Based on these findings, we examined the technical problems of the arrangement of the explosive charge and the order of detonation in the directional water pressure blasting in the bridge pier.
- bridge pier,
- water pressure directional blasting,
- finite element method,
- crushing mechanism

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References(8)

References

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