Capacity Testing Analysis and Calculation for Shaped-steel Rreinforced Concrete Special-shaped Columns under Axial Compression

Based on the data of experimental research,the failure processes of shaped-steel reinforced concrete special-shaped columns are analyzed.It is indicated that the failure processes are similar and can be described as three stages,i.e.the elastic stage,elastic-plasitc stage and failure stage.The L-shaped column undergoes the biaxial bending failure under axial loading,and compared with the ordinary columns,the shaped-steel columns can resist the biaxial bending failure effectively.Then the calculation formula for axial compression bearing capacity of the shape-steel reinforced concrete special-shaped columns is suggested for design.