Experimental Study of Rectangular Concrete-Filled Double-skin Steel Tubes Subjected to Axial Compressive Load

摘要

Six rectangular concrete-filled double-skin steel tubes (RCFDST)and one rectangular concrete filled steel tube were tested under axial compressive load.The test results show that the axial bearing capacity of the rectangular concrete filled double skin tube specimens is equivalent to the rectangular concrete filled steel tube.The ductility of the rectangular concrete filled double skin tubes is greater than the rectangular concrete filled steel tube.Load-deformation relationship curves of rectangular concrete filled double skin steel tubes subjected to axial compression were analyzed by finite element software ABAQUS,the calculated results were in good agreement with those of tests.