Dynamic response of existing large oil storage tank under blasting excavation vibration

CHEN Yang; WU Liang; XU Feng; LU Shuai

doi:10.11883/bzycj-2017-0128

Volume 38 Issue 6

Sep. 2018

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Article Navigation > Explosion And Shock Waves > 2018 > 38(6): 1394-1403

CHEN Yang, WU Liang, XU Feng, LU Shuai. Dynamic response of existing large oil storage tank under blasting excavation vibration[J]. Explosion And Shock Waves, 2018, 38(6): 1394-1403. doi: 10.11883/bzycj-2017-0128

Citation:

CHEN Yang, WU Liang, XU Feng, LU Shuai. Dynamic response of existing large oil storage tank under blasting excavation vibration[J]. Explosion And Shock Waves, 2018, 38(6): 1394-1403. doi: 10.11883/bzycj-2017-0128

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Dynamic response of existing large oil storage tank under blasting excavation vibration

doi: 10.11883/bzycj-2017-0128

CHEN Yang^{1, 2},
WU Liang^{1, 2
,
,},
XU Feng^{1, 2},
LU Shuai^{1, 2}

1.
Blasting Technology Research Center, CRPCE-WUST, Wuhan 430065, Hubei, China
2.
College of Science, Wuhan University of Science and Technology, Wuhan 430065, Hubei, China

Received Date: 2017-04-20
Rev Recd Date: 2017-09-18
Publish Date: 2018-11-25

Abstract

Abstract

Aiming at the safety problem of existing large oil tank under near base blasting excavation, the dynamic response of large oil tank is analyzed by numerical simulation method, based on the implicit-to-explicit sequential solution procedure and the fluid solid coupling algorithm of ANSYS/LS-DYNA. different positions are obtained, by which it is not appropriate to determine the dangerous point of the tank wall because the distributions of the particle vibration velocities are very complex. The dynamic stress distribution on the tank wall is summarized, and the results show that the influence of blasting vibration on the oil tank is mainly concentrated on the lower part of the explosion side, and that the elephant foot buckling deformation is most likely produced at the height of 3 meters on the detonation side of tank wall; The particle vibration velocity of the tank wall under different frequency of blasting vibration is analyzed. The results show that in the main frequency range of blasting vibration, the particle vibration velocity on the tank wall decreases with the decrease of blasting vibration frequency if the load frequency is much larger than the natural frequency of the tank; The relationship between the particle vibration velocity and the liquid level in the tank is established, and the results show that lowering the height of liquid level can effectively improve the safety threshold of blasting vibration of the oil tank, and the storage liquid height of adjacent storage tanks should not be higher than 10 m for blasting operations.
- implicit-to-explicit,
- fluid solid coupling,
- blasting,
- large oil storage tank,
- dynamic response

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References

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