Damage effect of pile wharf under underwater explosion load

According to the relevant data of reinforced concrete pile test under underwater explosion load in the near-field range of the cooperative company, the corresponding numerical model is established through the explicit finite element analysis program AUTODYN. The accuracy of the required parameters and the calculation method in the numerical simulation process is verified by comparing shock-wave load with reinforced concrete pile damage. Considering the influence of charge quality on the dynamic response and damage mode of reinforced concrete single and group piles, the collapse conditions of the high-pile wharf are analyzed from static and dynamic aspects based on the reinforced concrete pile model of a typical high-pile wharf structure. Results show that the reflected pressure of shock wave is unevenly distributed along the pile with different explosive equivalents, that is, large in the middle and small on both sides. The damage modes of single piles can be divided into bending, bending shear, and shear failures. The study of the continuous collapse condition of piled wharf reveals that the concrete pile and the cap contact part of the first coagulant crushing failure.