核电站防波堤抗海啸漂浮物冲击数值模拟及分析

发布时间：2018-03-23 12:26

本文选题：冲击响应　切入点：多物质ALE　出处：《应用基础与工程科学学报》2014年06期

【摘要】：对海啸漂浮物冲击沿海防浪堤造成的结构安全问题,基于多物质ALE(Arbitrary Lagrangian-Eulerian)方法,利用带阻尼罚函数实现波浪、海啸漂浮物和防浪堤结构三者之间的耦合作用,建立三维数值冲击耦合模型,模拟了孤立波带动漂浮物冲击防浪堤结构的动态响应过程.首先通过物理模型试验验证所用数值方法的可靠性,在此基础上研究了防浪堤挡浪墙抗海上和陆上漂浮物的冲击能力,并且从漂浮物的质量、漂浮物距挡浪墙的距离等参数对冲击规律展开研究.结果表明,带漂浮物的海啸相比海啸波对结构更具破坏力;漂浮物质量和相对于防浪堤的初始位置对防浪堤的冲击响应有较大影响.
[Abstract]:Based on the multi-material ALE(Arbitrary Lagrangian-Eulerian method, the coupling of wave, tsunami floating object and the structure of the breakwater is realized by using the damped penalty function to solve the structural safety problem caused by the tsunami floating object impact on the coastal breakwater. A three dimensional numerical shock coupling model is established to simulate the dynamic response of floating object impingement structure driven by solitary wave. Firstly, the reliability of the numerical method is verified by physical model test. On the basis of this, the impact resistance of the wave-proof wall of the berm to floating objects at sea and on land is studied, and the impact law is studied from the parameters such as the quality of the floating object and the distance between the floating object and the wave-proof wall. The results show that, Compared with the tsunami wave, the tsunami with floating material has more destructive effect on the structure, and the mass of the floating material and the initial position relative to the breakwater have great influence on the impact response of the breakwater.
【作者单位】：上海交通大学机械系统与振动国家重点试验室;上海交通大学机械与动力工程学院;上海核工程设计研究院;
【基金】：国家自然基金项目(51475287,11272214) 国家863重大项目(2012AA01A307)
【分类号】：U656.2;TM623

【参考文献】