SIMULATION OF SHIP-BRIDGE HEAD-ON COLLISION BASED ON FINITE ELEMENT MODEL OF WHOLE SHIP-BRIDGE
SIMULATION OF SHIP-BRIDGE HEAD-ON COLLISION BASED ON FINITE ELEMENT MODEL OF WHOLE SHIP-BRIDGE
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发表时间：
2003
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通讯作者：
Liu Jian-cheng
中科院分区：
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作者：
Liu Jian-cheng
船桥碰撞过程中桥梁的碰撞力和非线性响应的精确计算是一个非常困难的问题。采用非线性有限元技术可以有效地进行船桥碰撞的动态数值模拟。基于全船-桥有限元模型，模拟了40000 t载重油船带球艏与桥墩的正面碰撞过程。介绍并讨论了桥墩损伤的历史和性质、碰撞力、能量转换和应力分布。将数值模拟结果与经验公式和简化解析方法进行了比较。桥梁内部的应力分布对桥梁的设计和损伤估计具有重要的价值。
It is very difficult to accurately calculate the collision force and nonlinear responses of bridge during ship-bridge collision course. The dynamic numerical simulation of ship-bridge collision can be effectively carried out by means of nonlinear finite element technique. Based on the finite element model of whole ship-bridge, the head-on collision process between a 40000 t DWT oil ship with bulb bow and a bridge pier is simulated. The history and property of the bow damage, the collision force, the energy transform and the tress distribution in the bridge pier are presented and discussed. The results produced by numerical simulation are compared with those by empirical formulas and simplified analytical method. The stress distribution in the bridge is of important value to the design and damage estimation of the bridge.