摘要
针对水运工程迅猛发展,内河桥梁受船舶撞击威胁日益增大的背景,为分析内河桥梁受船舶撞击的作用规律,拟借助LS-DYNA三维有限元计算软件,以润扬长江大桥为研究实例,撞击船舶选择最不利船舶(3 000 t级),建立三维数值模型,从桥墩混凝土强度、配筋率、船舶行驶速度等方面分析主要影响因子对桥墩撞击的具体作用规律。
Under the background that water transport engineering develops rapidly and inland river bridges are seriously threatened by ship collision,the article studies the characteristics of inland river bridges being collided by ships. The article built three-dimensional numerical model on the example of Runyang Yangtze River Bridge,by making use of three-dimensional finite element computational software LS-DYNA and setting the most unfavorable ship( 3 000 tons) as the colliding ship. The article then analyzes the influences of concrete strength of bridge piers,reinforcement ratio,ship speed and other factors on the ship collision on bridge piers.
引文
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