钢管混凝土构件极限承载力分析

Analysis on ultimate bearing capacity of concrete-filled steel tube

将钢管混凝土构件看成是钢管和混凝土两种元件组成的构件,通过二者的相互作用关系讨论,导出了在αfy<54 MPa的情况下,能适用于普通混凝土与高强混凝土的钢管混凝土构件的极限承载力计算公式。通过试验分析,其计算值与实测值吻合较好,从而避免了将核心混凝土分成普通和高强混凝土计算的麻烦,为钢管混凝土构件的设计提供了方便。

This paper considers concrete-filed steel tube of the member that is composed of two elements, that is steel and concrete. The ultimate bearing capacity formula that can be suitable for both general concrete and high-strength concrete-filled steel tube member is induced through interaction of them,when the variable αfy is not bigger than 54 MPa. The calcualate values tallies with the experimental values throuugh experimental analysis. It avoids the troubles that calculate separately to general and high-strength concrete, and it is convenient to design to the concrete-filled steel tube.