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中国公路学报 2008

联合模态柔度和静力位移的桥梁有限元模型修正方法

, PP. 43-49

宗周红, 夏樟华

Keywords: 桥梁工程,刚架拱桥,有限元模型修正,模态柔度,静力位移,目标函数

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Abstract:

？利用商用软件ANSYS提供的零阶和一阶优化算法,通过1个仿真简支梁有限元模型修正算例,比较了不同目标函数的有限元模型修正效果,提出了一种联合动力模态柔度和静力位移的有限元模型修正方法,并将这种方法运用于一座加固后的刚架拱桥的有限元模型修正,建立起了该桥加固后的基准有限元模型。结果表明:利用修正后的刚架拱桥有限元模型计算的静、动力特性与实测结果吻合良好,这种联合静、动力的有限元模型修正方法具有比较好的模型修正效果,修正后的桥梁有限元模型可以服务于桥梁健康监测和安全评估。

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