The study of dynamics behavior of concrete filled steel tubular (CFST) members

摘要

In this paper, authors propose the theoretical research results of dynamic behaviours of concrete filled steel tubular (CFST) members. By use of finite element method, the hysteresis curves and skeleton curves of moment - curvature (M - #phi#) and load - displacement (P - triangle open) of CFST member were first calculated. The models of these curves were established, and simplified formulas of the displacement ductility coefficient was proposed. The calculating results agree with test results very well.