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本文以实验室的大跨桥梁结构钢箱梁纵向加劲桁架缩尺试样为研究平台,具体讨论了多尺度模型修正和验证的实施过程。首先分析了影响此结构多尺度模型精度的一些因素,然后采用基于灵敏度的方法对多尺度模型进行修正,并通过实测数据从动力特性和静力响应等多方面对所建的结构多尺度有限元模型进行了验证。结果表明:基于子结构方法建立的结构多尺度模型是有效的。
In this paper, a large-span steel truss girder with large-span bridge structure in laboratory is taken as the research platform, and the implementation of multi-scale model correction and verification is discussed in detail. Firstly, some factors that affect the accuracy of the multi-scale model are analyzed. Then the sensitivity-based method is used to correct the multi-scale model. The measured data are used to analyze the dynamic characteristics and static response of the constructed multi-scale finite element The model is validated. The results show that the structural multi-scale model based on substructure method is effective.