Analysis of damage characteristics and criteria of independent embedded steel sheet piles under shallow water explosion

ZHAO Hongyu; ZHANG Jiaqi; SUN Keping; ZHAO Yinlong; SHI Xuyang; WANG Hongyuan

doi:10.11883/bzycj-2026-0072

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ZHAO Hongyu, ZHANG Jiaqi, SUN Keping, ZHAO Yinlong, SHI Xuyang, WANG Hongyuan. Analysis of damage characteristics and criteria of independent embedded steel sheet piles under shallow water explosion[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2026-0072

Citation:

ZHAO Hongyu, ZHANG Jiaqi, SUN Keping, ZHAO Yinlong, SHI Xuyang, WANG Hongyuan. Analysis of damage characteristics and criteria of independent embedded steel sheet piles under shallow water explosion[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2026-0072

Citation:

ZHAO Hongyu, ZHANG Jiaqi, SUN Keping, ZHAO Yinlong, SHI Xuyang, WANG Hongyuan. Analysis of damage characteristics and criteria of independent embedded steel sheet piles under shallow water explosion[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2026-0072

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Analysis of damage characteristics and criteria of independent embedded steel sheet piles under shallow water explosion

doi: 10.11883/bzycj-2026-0072

1.
Unit 32213 of People’s Liberation Army of China, Zhangjiakou 075421, Hebei, China

Received Date: 2026-03-12
Rev Recd Date: 2026-07-04

Available Online: 2026-07-21

Abstract

Abstract

Independent embedded steel sheet piles, characterized by convenient construction and strong damage resistance, are widely used in nearshore coastal protection engineering. The damage characteristics of steel sheet piles subjected to shallow-water explosions play a critical role in determining the reliability of blast-resistant design. However, existing studies remain insufficient to fully elucidate the damage mechanisms of steel sheet piles under shallow-water blast loading. Based on the attenuation law of underwater explosion loads, an engineering calculation model was established to evaluate the blast-induced damage of steel sheet piles in shallow water. Meanwhile, a coupled numerical simulation model accounting for the interaction among multiple materials was developed. Model tests were further conducted to validate the reliability of both the engineering calculation model and the numerical simulations. The effects of explosive charge equivalent, standoff distance, and water depth on the structural damage response were systematically analyzed. The results indicate that the weak zone of steel sheet piles is mainly concentrated near the water-soil interface, with punching shear fracture and bending deformation identified as the dominant failure modes. The scaled distance was found to be the key parameter governing the damage behavior. When the scaled distance is less than 0.086m/kg^1/3, punching shear fracture occurs; when it exceeds 1.026 m/kg^1/3, no significant damage is observed; and within the intermediate range, plastic bending deformation develops. Increasing water depth has a limited effect on fracture failure but can significantly extend the bending deformation zone, with an increase of up to 35%. Good agreement was achieved among the theoretical calculations, numerical simulations, and experimental results, with relative errors within 10%, satisfying the accuracy requirements for engineering prediction. These findings provide a reliable theoretical basis and practical guidance for the blast-resistant design, damage assessment, and protective reinforcement of independent embedded steel sheet pile structures.
- independently embedded steel sheet piles,
- shallow water explosion,
- failure mode,
- damage characteristics,
- water-soil coupling effect

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References(20)

References

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