Dynamic interaction between surrounding rock and initial supporting structure subjected to explosion shock wave

Sun Huixiang; Lu Feng; Chi Weisheng; Kang Ting; Liu Yuanfei

doi:10.11883/1001-1455(2017)04-0670-07

Volume 37 Issue 4

May 2017

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Sun Huixiang, Lu Feng, Chi Weisheng, Kang Ting, Liu Yuanfei. Dynamic interaction between surrounding rock and initial supporting structure subjected to explosion shock wave[J]. Explosion And Shock Waves, 2017, 37(4): 670-676. doi: 10.11883/1001-1455(2017)04-0670-07

Citation:

Sun Huixiang, Lu Feng, Chi Weisheng, Kang Ting, Liu Yuanfei. Dynamic interaction between surrounding rock and initial supporting structure subjected to explosion shock wave[J]. Explosion And Shock Waves, 2017, 37(4): 670-676. doi: 10.11883/1001-1455(2017)04-0670-07

Citation:

Sun Huixiang, Lu Feng, Chi Weisheng, Kang Ting, Liu Yuanfei. Dynamic interaction between surrounding rock and initial supporting structure subjected to explosion shock wave[J]. Explosion And Shock Waves, 2017, 37(4): 670-676. doi: 10.11883/1001-1455(2017)04-0670-07

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Dynamic interaction between surrounding rock and initial supporting structure subjected to explosion shock wave

doi: 10.11883/1001-1455(2017)04-0670-07

1.
Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, Shaanxi, China
2.
Xi'an Tianfeng Construction and Installation Engineering Company, Xi'an 710025, Shaanxi, China

Received Date: 2015-11-28
Rev Recd Date: 2016-06-02
Publish Date: 2017-07-25

Abstract

Abstract

The dynamic interaction between the surrounding rock and the initial supporting structure is essential for determining the load of the underground structure and designing the supporting structure. Using the nonlinear dynamic finite element procedure of ANSYS/LS-DYNA and the fluid-solid coupling algorithm, we simulated the underground arch structures with different spans subjected to the shock wave produced by an explosion perpendicular to the vault. Based on the wave theory we also analyzed the dynamic interaction force between the surrounding rock and the supporting structure and the applicability of the dynamic load equation, and obtained the variation of the maximum interaction. The results show that, at a perpendicular explosion that occurs 1~25 m away from the vault, the structures with 14~25 m spans experience partial failure on the vault while the concrete structure of the whole structure forms overall cracks. The maximum dynamic interaction force is observed when the explosion occurs at a distance 4 m. Our study can serve as a basis in determining the maximum load for the design of the surrounding rock and the underground structure.
- explosion shock wave,
- underground structure,
- numerical simulation,
- dynamic interaction

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References(12)

References

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