钢管混凝土拱桥结构分析中 ,一般取钢管和混凝土各自的轴压刚度之和作为构件的轴压刚度 ,而理论研究中有要提高轴压刚度和折减轴压刚度 2种趋势。本文总结了国内关于钢管混凝土构件轴压模量或轴压刚度的计算方法 ,通过数值计算 ,比较了各计算方法的差异 In the structural analysis of CFST arch bridge, the sum of the axial compressive stiffness of the steel pipe and the concrete is taken as the axial compressive stiffness of the component. There are two kinds of trends in the theoretical research to increase the axial compressive rigidity and reduce the axial compressive rigidity. This paper summarizes the calculation method of axial compressive modulus or axial compressive stiffness of CFST members in China, and compares the difference of each calculation method by numerical calculation