Analysis on Dynamic Response of Bridge Pier under Near-field Underwater Explosion Loading

ZHOU Longyun;LI Xiaojun;YAN Qiushi

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  • Sponsored by: China Association for Science and Technology (CAST)

    Editor-In-Chief: Xu Yida

    ISSN 1000-1093

    　

  • Hosted By: China Ordnance Society

    Published By: Acta Armamentarii

    CN 11-2176/TJ

Acta Armamentarii, a Chinese monthly journal, was first published in 1979. The journal is supervised by China Association for Science and Technology, sponsored by China Ordnance Society，and edited and published by Editorial Board of Acta Armamentarii. The Journal is included in all important domestic databases，and also collected by Engineering Index (EI, USA), Chemical Abstracts (CA, USA), Science Abstracts (SA, UK）, Abstract Journal (AJ, Russia), and Current Bibliography on Science and Technology(CBST).Acta Armamentarii has been selected into the journal Of Ordnance Science and Technology (Weapons Industry) Field Of High Quality Scientific and Technological Periodical Classification Catalogue (2022 edition), ranking T1, and the journal of Automotive Engineering Field of High Quality Scientific and technological Periodical classification Catalogue, ranking T2.
Acta Armamentarii ›› 2023, Vol. 44 ›› Issue (S1) : 90-98. DOI: 10.12382/bgxb.2023.0717
Paper

Analysis on Dynamic Response of Bridge Pier under Near-field Underwater Explosion Loading

  • ZHOU Longyun1, LI Xiaojun1,2*, YAN Qiushi1**
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Abstract

The dynamic response and damage mechanism of piers under underwater explosion loading are analyzed to investigate the damage to a pier caused by underwater explosion by using the arbitrary Lagrangian-Euler method. The accuracy of the finite element model is verified through an underwater explosion test, and then a finite element model of a pier under underwater explosion loading is established. Taking the residual vertical bearing capacity of the pier as the performance index, the damage evaluation method of pier under explosion loading is put forward. The influences of explosive weight and initiation point on the damage degree of pier are discussed. The investigation results indicate that the damage to the pier caused by bubble pulsation generated by a near-field underwater explosion cannot be ignored. When the outer side of pier is detonated, the TNT weight is exponentially related to the residual bearing capacity of pier. When the weight of TNT is the same, the damage caused by the explosion inside the pier is the most serious.

Key words

underwaterexplosion / pier / bubblepulsation / safetyfactor

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ZHOU Longyun, LI Xiaojun, YAN Qiushi. Analysis on Dynamic Response of Bridge Pier under Near-field Underwater Explosion Loading. Acta Armamentarii. 2023, 44(S1): 90-98 https://doi.org/10.12382/bgxb.2023.0717

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