A new composite protective structure based on controllability of blast load on structure layer (Ⅱ): influence factors and design concept

FANG Qin; GAO Chu; KONG Xiangzhen; YANG Ya

doi:10.11883/bzycj-2023-0463

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FANG Qin, GAO Chu, KONG Xiangzhen, YANG Ya. A new composite protective structure based on controllability of blast load on structure layer (Ⅱ): influence factors and design concept[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0463

Citation:

FANG Qin, GAO Chu, KONG Xiangzhen, YANG Ya. A new composite protective structure based on controllability of blast load on structure layer (Ⅱ): influence factors and design concept[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0463

Citation:

FANG Qin, GAO Chu, KONG Xiangzhen, YANG Ya. A new composite protective structure based on controllability of blast load on structure layer (Ⅱ): influence factors and design concept[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2023-0463

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A new composite protective structure based on controllability of blast load on structure layer (Ⅱ): influence factors and design concept

doi: 10.11883/bzycj-2023-0463

FANG Qin^1
,,
GAO Chu^{1, 2},
KONG Xiangzhen^{1
,
,},
YANG Ya¹

1.
State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, Army Engineering University of PLA, Nanjing 210007, Jiangsu, China
2.
School of Public Finance and Taxation, Inner Mongolia University of Finance and Economics, Hohhot 010070, Inner Mongolia, China

Received Date: 2023-12-23
Rev Recd Date: 2024-03-08

Available Online: 2024-03-12

Abstract

Abstract

The experimental and numerical investigation was carried out to clarify the influence of thickness and strength of foam concrete layer on blast resistance of the new composite protective structure. And the multilayer graded foam concrete was applied to adequately and rationally use the good wave dissipation performance of foam concrete. Then the advantage of new composite protective structure is verified by the comparison with the traditional layered structure with medium/coarse sand as the distribution layer. Finally, the design concept of composite protective structure based on controllability of blast load on structure layer is summarized. The foam concrete can be used as energy control layer of composite protective structure, which is mainly due to its long yield plateau and low wave impedance. The blast load acting on the structure layer can be exactly equal to the yield strength of foam concrete by choosing the appropriate thickness and strength (density) of foam concrete layer, as well as the use of the multilayer graded foam concrete. Based on the controllable design concept of blast load on structure layer in the new composite protective structure, the defects of traditional layered protective structure with medium/coarse sand as the distribution layer can be solved thoroughly, all of which can provide important reference for design of protective structure against new earth penetration weapons.
- foam concrete,
- composite protective structure,
- controllable design,
- blast load,
- wave dissipation

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References(16)

References

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