According to the unified theory of concrete filled steel tube,the inelastic yield load formula of axial compression middle long column was deduced by using the tangent modul theory.

• 根据钢管混凝土统一理论,对国内某中承式钢管混凝土拱桥建立的模型进行了动力特性研究,并用时程分析法对其进行了地震响应分析。