Finite element modeling of steel tubes filled with rubberized concrete under cyclic loading

摘要

In this paper, the mechanical behavior of short rubberized concrete filled steel tubular (RuCFST) columns with square cross-section under cyclic loading is studied numerically. For this, quasi-static analyses using commercial finite element modeling package Abaqus/Explicit are performed. Good agreement between numerical and experimental results is obtained, thus validating the models. It is concluded that the lower stiffness and strength of the rubberized concrete (compared to natural aggregate concrete) seems to offset its potential (given by its lower brittleness) to increase ductility of the RuCFST columns.