海啸作用下漂浮物行为及对陆上建筑作用力研究

根据实际物理实验，采用ALE（任意拉格朗日欧拉）有限元方法在三维数值波浪水池中模拟了海啸的产生、海啸波的传播，与漂浮物作用以及漂浮物与陆上建筑的撞击。通过将海啸上岸后的波高、与漂浮物的作用力以及漂浮物的速度等数值计算结果与物理实验结果进行对比，验证了ALE流固耦合有限元方法在研究海啸作用下漂浮物行为方面的可行性。在此基础上进一步分析漂浮物在海啸作用下对陆上建筑的作用力。通过计算发现，漂浮物的质量、撞击速度对作用力起决定性作用，而被撞建筑的刚度对作用力的影响并不大。

Study on the Behavior of Drift by Run-up Tsunami and the Acting Force with the Building on Land

Based on the physical experiments, this study simulated the tsunami generation and propagation of tsunamis, collision with the drift and the impact of drift and buildings on land through the ALE finite element method in three-dimensional numerical wave tank .The run-up tsunami level, acting force with the drift and the velocity of drift was measured. Compared numerical computation data with the physical experiments, it verified the feasibility of ALE fluid-structure interaction method in the study on the behavior of drift by run-up tsunami. Based on this, analyzed the force that drift on building by run-up tsunami. The results show that the velocity of collision and the weight of the drift play a key role in the force that drift on building, however, the stiffness of building on land almost has no influence on it.