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由于现行各船撞力经验公式计算的结果差异较大、设计值不统一,而无法直接应用于桥梁的防撞设计,因而必须结合有限元仿真计算,并综合考虑船桥碰撞各因素来确定。该文借助Ansys/LS-DYNA非线性有限元分析软件,对英德浈阳大桥进行船撞数值模拟,计算了不同工况下的撞击力,讨论了不同水位、不同角度以及船头不同碰撞部位对船撞力的影响。并将数值模拟得到的船撞力和国内外规范经验公式的计算结果进行比较分析,进而确定该桥船舶撞击力的标准取值。
Due to the large differences between the current ship collision experience formulas and the design values, the design values are not uniform and can not be directly applied to the anti-collision design of the bridge. Therefore, it must be combined with the finite element simulation calculation and comprehensive consideration of various factors of bridge collision. In this paper, Ansys / LS-DYNA nonlinear finite element analysis software is used to simulate the ship impact on Yingyang Bridge, and the impact force under different conditions is calculated. The effects of different water levels, different angles and different collisions Impact on the ship’s impact. The comparison between the ship collision force obtained by numerical simulation and the calculation results of the empirical formula of norms at home and abroad is carried out to determine the standard value of impact force of the ship.