Damage modes and failure mechanism of concrete dome of LNG storage tank

ZHAI Ximei; ZHAO Xinyu

doi:10.11883/bzycj-2017-0090

Volume 38 Issue 5

Jul. 2018

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ZHAI Ximei, ZHAO Xinyu. Damage modes and failure mechanism of concrete dome of LNG storage tank[J]. Explosion And Shock Waves, 2018, 38(5): 966-976. doi: 10.11883/bzycj-2017-0090

Citation:

ZHAI Ximei, ZHAO Xinyu. Damage modes and failure mechanism of concrete dome of LNG storage tank[J]. Explosion And Shock Waves, 2018, 38(5): 966-976. doi: 10.11883/bzycj-2017-0090

ZHAI Ximei, ZHAO Xinyu. Damage modes and failure mechanism of concrete dome of LNG storage tank[J]. Explosion And Shock Waves, 2018, 38(5): 966-976. doi: 10.11883/bzycj-2017-0090

Citation:

ZHAI Ximei, ZHAO Xinyu. Damage modes and failure mechanism of concrete dome of LNG storage tank[J]. Explosion And Shock Waves, 2018, 38(5): 966-976. doi: 10.11883/bzycj-2017-0090

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Damage modes and failure mechanism of concrete dome of LNG storage tank

doi: 10.11883/bzycj-2017-0090

ZHAI Ximei^{1, 2
,},
ZHAO Xinyu^{1, 2}

1.
Key Laboratory of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China
2.
Key Laboratory of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China

Received Date: 2017-03-23
Rev Recd Date: 2017-05-23
Publish Date: 2018-09-25

Abstract

Abstract

In order to investigate the damage modes and failure mechanism of the concrete dome of the liquefied natural gas (LNG) storage tank subjected to impact by a rigid circular cylinder, the finite element (FE) model of the outer concrete tank of the 160 000 m³ LNG storage tank for an actual LNG project and a cylindrical impactor is established based on ANSYS/LS-DYNAFE analysis software platform. The accuracy of the numerical simulation method and the material model employed has been verified by simulating the impact perforation of reinforced concrete slabs subjected to projectile with high speed. The dynamic response of structures under impacting with variable speed, angle, location, and diameter are studied. Based on the dynamic response of the outer concrete tank of the LNG storage tank subjected to impact loading, three damage modes are defined and the failure mechanism of each mode is revealed from the point view of energy. The response characteristics and rules with the change of the impact parameters are obtained. The results show that the impact angle and the diameter of the impactor affect significantly on the failure modes of dome, and the impact position at the dome has a negligible effect on the failure modes.
- LNG storage tank,
- concrete dome,
- damage mode,
- failure mechanism

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References(13)

References

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