An experimental research on hysteretic behavior of HRB500 reinforcement concrete L-shaped columns

The HRB500 reinforcement concrete L-shaped column with various axial compression ratios and stirrup ratios was tested in low-cyclic-loading experiments in order to promote application of HRB500 steel bars in specially shaped column structure and research the hysteretic behavior of L-specially shaped columns.The result of damage characteristic,hysteretic characteristic,skeleton curve and the rigidity degradation was analyzed.The effects on hysteretic behavior of HRB500 reinforcement concrete L-shaped column were analyzed such as the axial compression ratio and stirrup ratios.It shows that the damage characteristic and the hysteretic characteristic of specimens are improved with the decrease of axial compression ratio and increase of stirrup ratios.The rigidity degradation becomes slow with the increase of axial compression ratio.The conclusions of HRB500 reinforcement concrete L-shaped column can be references for structural design.