【作者】 方庆贺； 洪荣灿； 郭安薪；

【Author】 FANG Qing-he;HONG Rong-chan;GUO An-xin;School of Civil Engineering,Harbin Institute of Technology;

【机构】 哈尔滨工业大学土木工程学院；

【摘要】 2004年和2005年飓风在美国墨西哥湾沿岸造成了大量近海低矮桥梁损毁,给当地造成了巨大的经济和社会损失。目前国内外均开始对于桥梁上部结构受到的波浪作用力进行研究,但已有的研究大多假设波浪传播方向垂直于桥跨方向。本研究针对实际飓风波浪传播方向不垂直于桥跨时桥梁上部结构受到的波浪作用力进行研究。首先开展了大比尺的全桥模型试验,然后基于势流理论建立了桥梁上部结构受波浪作用的水动力模型。基于试验和理论结果分析了桥梁上部结构尺寸,波向角等因素对上部结构所受波浪力的影响。理论模型计算结果表明,波浪作用力随波向角增大而减小。更多还原

【Abstract】 The Hurricane Ivan(2004) and Katrina(2005) caused large number of coastal bridges in the Gulf of Mexico in the US.However,most research of the wave forces acting on the coastal bridges were focusing on the normal incident waves.In this paper the wave forces acting on the coastal bridges under oblique incident waves was studied by theoretical and experimental approaches.Firstly,the theoretical model of the wave action on the submerged bridge superstructure was setup basing on potential flow theory.Then,a 1:10 wave flume was conducted to investigate the wave forces acting on the bridges under regular waves.The results of the theoretical model were validated by the experimental data.Moreover,the calculated results showed that the wave forces decrease with the increase of the wave angle.更多还原