Experimental study on the protective performance of a new brittle component subjected to ground shock

ZHOU Hongyuan; DU Wenzhao; WANG Xiaojuan; ZHANG Xuejian; YU Shangjiang; ZHANG Hong

doi:10.11883/bzycj-2022-0044

Volume 42 Issue 7

Jul. 2022

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Article Navigation > Explosion And Shock Waves > 2022 > 42(7): 075101

ZHOU Hongyuan, DU Wenzhao, WANG Xiaojuan, ZHANG Xuejian, YU Shangjiang, ZHANG Hong. Experimental study on the protective performance of a new brittle component subjected to ground shock[J]. Explosion And Shock Waves, 2022, 42(7): 075101. doi: 10.11883/bzycj-2022-0044

Citation:

ZHOU Hongyuan, DU Wenzhao, WANG Xiaojuan, ZHANG Xuejian, YU Shangjiang, ZHANG Hong. Experimental study on the protective performance of a new brittle component subjected to ground shock[J]. Explosion And Shock Waves, 2022, 42(7): 075101. doi: 10.11883/bzycj-2022-0044

Citation:

ZHOU Hongyuan, DU Wenzhao, WANG Xiaojuan, ZHANG Xuejian, YU Shangjiang, ZHANG Hong. Experimental study on the protective performance of a new brittle component subjected to ground shock[J]. Explosion And Shock Waves, 2022, 42(7): 075101. doi: 10.11883/bzycj-2022-0044

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Experimental study on the protective performance of a new brittle component subjected to ground shock

doi: 10.11883/bzycj-2022-0044

1.
Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China
2.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
3.
Institute of Engineering Protection, Institute of Defense Engineering, Academy of Military Sciences, Luoyang 471023, Henan, China

Received Date: 2022-01-27
Rev Recd Date: 2022-05-23

Available Online: 2022-05-30

Publish Date: 2022-07-25

Abstract

Abstract

To effectively protect the underground structures subjected to ground shock, a new protective component made of foam concrete was proposed. Different from the mechanism of the solid foam concrete layer protection, under the action of ground shock, the proposed components firstly exhibited brittlely fracture, and the fractured parts underwent recontact and compaction, in which the ground shock truncation, load transferred reduction and load form modification on the structures were achieved with the response of the designed components. A field experiment was conducted and the comparison of the dynamic response of the structure (with different protection scenarios, i.e. without protection, with a solid foam concrete layer protection and with the proposed component layer protection) suggested that the superior protective performance was achieved with the fracture, recontact, compaction of the new component. Due to the brittle fracture, the load transfer could be significantly reduced under a relatively low ground shock level, with which the negative protection effect using solid foam concrete layer could be avoided. Subjected to a relatively strong ground shock, the proposed component layer tended to compaction, and its protection effect gradually approached that with the solid foam concrete layer.
- foam concrete,
- ground shock,
- underground structure,
- brittle fracture,
- load transfer

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References(23)

References

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