EXPERIMENTAL STUDY ON BUCKLING BEHAVIOR AND DISSIPATED ENERGY OF CONCRETE-FILLED RECTANGULAR TUBULAR MENBERS UNDER CYCLIC AXIAL LOADING

Abstract

The objective of this study is to present a method for predicting the energy dissipation capacity in concrete-filled rectangular tubular members (CFRT members) under cyclic axial loads. A test of total thirty seven specimens is carried out in order to establish a failure rule in cyclic local bucklings in CFRT members, on which the prediction method is based. The prediction by the proposed method reveals that the dissipated energy in CFRT members can be predicted with a good accuracy, although it is fairly smaller than that in concrete-filled circular tubular members (CFT members).