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基于车-桥系统耦合振动理论的大跨PC连续刚构桥冲击系数研究

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Keywords: 桥梁工程,大跨PC连续刚构桥,车-桥系统耦合振动理论,冲击系数,基频

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Abstract:

?在分析车-桥系统耦合振动研究资料的基础上,推导了基于自身假设条件下的车-桥系统耦合振动的运动方程组。利用VC++编制了可用于车-桥系统耦合振动分析的专业程序CQZD。以2座大桥为例,分析了桥梁基频对大跨PC连续刚构桥冲击系数的影响,并将算例中的冲击系数计算结果同按规范JTGD60—2004计算的结果进行了比较。结果表明:桥梁基频对冲击系数的影响比较显著,冲击系数随基频的降低而降低。

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