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基于非线性有限元的桥梁船撞分析与撞击力研究

DOI: 10.3969/j.issn.1674-0696.2015.01.03, PP. 12-15

Keywords: 桥梁工程,桥梁船撞,撞击力,等效静力,bridgeengineering,vesselcollisionwithbridges,impactingforce,equivalentstaticforce

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Abstract:

:?桥梁船撞通常造成很大的风险,其撞击过程是一个复杂瞬态动力过程,现行规范将这种冲击作用以等效静态力的形式施加到桥梁结构上,计算撞击效应。基于一座内河航道上施工中的桥梁受到船只撞击,计入几何和材料非线性,分析其撞击力和撞击损伤效应。并对比研究不同初速度下的数值分析结果、不同规范的等效静力及其与撞击速度的关系,探讨桥梁船撞作用力。在此基础上,讨论了内河航道船舶等效撞击力,在现有规范下,建议了桥梁设计撞击力的参照公式。

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