方海,李思凡,贾恩实,祝露,刘煜

• 1:南京工业大学土木工程学院
• 2:中铁大桥勘测设计院集团有限公司

摘要(Abstract)：

为研究公路铁路两用桥船桥碰撞作用下的动力响应，以崇启公铁长江大桥为背景，采用ANSYS/LS-DYNA软件建立整桥模型，对3 000吨级船舶撞击整桥过程进行精细模拟，研究船舶不同撞击角度下的撞击力对船艏变形、桥塔横向位移及损伤等动力响应的影响。结果表明：有限元模拟结果与试验结果基本吻合，该模拟方法可靠；船舶正撞时，船艏变形表现为与桥塔接触部位向内凹陷与整体压溃；15°侧撞时，船艏一侧大面积压溃，另一侧后部挤压变形，动能转化为内能的部分减少，产生的滑移能增加；撞击角度增大为26°时，船艏变形、桥塔横向位移和撞击力峰值随之减小，桥塔受损情况略微减轻。

关键词(KeyWords)： 公路铁路两用桥;船桥碰撞;数值模拟;整桥模型;撞击角度;动力响应

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(52078248);; 江苏省科技计划专项资金(国际科技合作/港澳台科技合作计划)-港澳台科技合作项目(BZ2024058)~~

作者(Author): 方海,李思凡,贾恩实,祝露,刘煜

DOI: 10.20052/j.issn.1671-7767.2025.05.007

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