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应用有限元法研究钢管混凝土拱桥的动力特性。把钢管混凝土结构视为一组合材料 ,根据全过程分析的应力应变曲线 ,得到钢管混凝土结构的组合模量。通过求解动力特征方程 ,得到钢管混凝土拱桥的自振频率和振型
Study on Dynamic Characteristics of Concrete Filled Steel Tubular Arch Bridge by Finite Element Method. Taking CFST structure as a composite material, the combined modulus of CFST structure is obtained according to the stress-strain curve analyzed in the whole process. By solving the dynamic characteristic equation, the natural frequency and vibration mode of CFST arch bridge are obtained