水下爆炸对高桩码头毁伤效应的试验研究

为了研究水下爆炸作用下高桩码头的破坏模式和毁伤机理，考虑不同炸药位置，设计制作2个高桩码头模型，进行水下爆炸试验，记录了水下荷载数据和码头模型毁伤现象，探析了炸药位置对高桩码头毁伤效应和破坏机理的影响。研究表明:水下爆炸作用下码头受到2次超压荷载，分别为初始冲击波、水底反射波组成的冲击波载荷和气泡脉动载荷；水下爆炸作用下，高桩码头的主要毁伤部位为桩基的中部和顶部、面板、纵梁以及面板与纵、横梁连接处；炸药位置直接影响高桩码头破坏模式，减小爆距会加剧桩基毁伤效应，当炸药位于面板下方时，码头上部梁板结构的毁伤程度较大。

Experimental research in damage effects of high-piled wharf under underwater explosion

In order to study the failure mode and damage mechanism of a high-piled wharf subjected to underwater explosion, the experimental study on two models of the high-piled wharf under different explosive positions was conducted. The data collection and analysis for underwater loads and damage phenomenon of wharf models were recorded. The influence of explosive position on the damage effect and damage mechanism of high-piled wharf was analyzed. The results show the followings: The wharf is subjected to two times of loads under underwater explosive, which are the shock wave load composed of initial shock wave and underwater reflected wave, and bubble pulse load. The main damaged parts of the high-piled wharf are the middle and top of the piles, panel, longitudinal beams and the connection of the panel and beams. The explosive position directly affects the damage form of the wharf. Reducing the distance between the explosive and pile will increase the damage of the pile. When the explosive is located under the panel, the beams and panel of the high-piled wharf is seriously damaged.