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板桁组合式钢桥是一种合理的结构形式,但由于桥面板的存在,使得在用有限单元法对它进行空间计算时,自由度的次数过高,因而给计算工作带来了一定的困难,在实用中常采用各种近似的分析方法。子结构法是一个分析复杂结构的有效方法之一,随着近代计算力学的发展,其作用愈益显得突出。子结构法虽然是一个理论简单众所熟知的方法,但在具体应用中究竟选
The plate girder composite steel bridge is a reasonable structure, but due to the existence of the bridge deck, the number of degrees of freedom is too high when it is calculated by the finite element method in space, which brings a certain amount of calculation work Difficult, in practice often use a variety of approximate analysis. Substructure method is one of the effective methods to analyze complex structure. With the development of modern computational mechanics, its function becomes more and more prominent. Although the substructure method is a well-known method of simple theory, but in the specific application of the election