Dynamic Response of High-piled Wharf Pile Subjected to Underwater Explosion

7th Annual International Conference on Materials Science and Engineering

Liu, Jinghan^1^2 ; Tang, Ting^2 ; Wei, Zhuobin^2 ; Li, Lingfeng^1^2 ; Zhang, Yuanhao^1^2

Naval University of Engineering, Wuhan, Hubei

430033, China^1

Naval Logistics Collage of PLA, Tianjin

300450, China^2

关键词: Calculation models;    Computational model;    Dynamic coefficient;    Dynamic response of piles;    Elastically supported beams;    Horizontal stiffness;    Load duration;    Torsional stiffness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/562/1/012007/pdf
DOI  :  10.1088/1757-899X/562/1/012007

来源: IOP

【 摘 要 】

In order to study the dynamic response of high-piled wharf pile subjected to underwater explosion, pile was simplified as an elastically supported beam. The computational model of pile was established. The correctness of the calculation model was verified by theoretical analysis. The dynamic coefficient Kd was an index to the displacement and deformation of pile. In order to further investigate the dynamic response of pile, typical high-piled wharf piles subjected to shock wave load and bubble pulse load were analysed. The results show that horizontal stiffness has more impact on dynamic coefficient than torsional stiffness. The bubble pulse load poses a greater threat to pile than shock wave load. The peak load and load duration are the significant facts influencing dynamic coefficient in shock wave phase. The load duration is the significant factor influencing dynamic coefficient in bubble pulse phase.