升船机承船厢防撞装置受撞数值模拟研究  

Numerical simulation study on ship collision with anti-collision device of ship lift chamber structure

作　　者：韩申 郑恩东 王新[2] 朱召泉[1] HAN Shen;ZHENG En-dong;WANG Xin;ZHU Zhao-quan(College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China)

机构地区：[1]河海大学土木与交通学院,南京210098 [2]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,南京210029

出　　处：《水道港口》2020年第6期694-699,共6页Journal of Waterway and Harbor

基　　金：国家重点研发计划(2016YFC0402007)。

摘　　要：以向家坝升船机承船厢防撞装置为背景,建立水体、船舶和“防撞绳加缓冲油缸”防撞装置组成的耦合体有限元模型,将数值模拟结果与向家坝升船机承船厢现场撞击试验结果对比并验证了数值模拟分析的可行性和精度后,分别考虑船艏形状、船舶速度和撞击位置的影响,对船舶撞击防撞绳的不同工况进行模拟分析,得出了上述因素对防撞装置防撞结果的影响。得到以下结论:船舶撞击中间位置时,防撞绳拉力最大;船艏角度越小时,防撞绳拉力越大;该防撞装置消耗的船舶动能最大可达90%,对船厢厢头闸门起到了很好的保护作用;当船速过大时,船舶缓冲距离会超过防撞装置设计要求,需对船舶厢内船速进行控制。Taking the anti-collision device of Xiangjiaba ship lift chamber structure as the background, a finite element model of a coupling system consisting of water, ship, and " wire rope connecting buffer cylinde " anti-collision devices was established. By comparing the on-site impact test and numerical simulation results of the Xiangjiaba ship lift chamber structure, the accuracy and feasibility of the collision numerical simulation were verified. The influence of the bow shape, the speed of the ship and the impact position were considered to numerically simulate different working conditions of ship impacting anti-collision rope. The influence of the above factors on the anti-collision result of the anti-collision device was clarified. Conclusions are as follows: when the ship hits the middle position, the wire rope pulls the maximum;the smaller the bow angle, the larger the wire rope pull;the anti-collision device consumes the most kinetic energy of the ship, it can reach 90%, which plays a good role in protecting the door of the ship lift chamber. When the speed of the ship is too large, the buffer distance of the ship will exceed the design requirements of the anti-collision device, and the ship speed inside the ship lift chamber needs to be controlled.

关 键 词：防撞装置 数值模拟 撞击过程 位移变化 能量转化 

分 类 号：U642[交通运输工程—船舶及航道工程]