SEISMIC DAMAGE ANALYSIS FOR SRHSHPC FRAME COLUMNS

To research the damage of steel reinforcement high strength high performance concrete (SRHSHPC) members under earthquake, the deficiency of existing seismic damage models was pointed out and discussed. Based on test results of SRHSHPC frame columns under low cycle reversed loading, the seismic damage characteristics of SRHSHPC frame columns is analyzed. The damage model was established by reasonably considering the effect of cycle number on ultimate resistance capacity (ultimate deformation and ultimate energy dissipation capacity) of members and the effect of loading history. According to the test results, the related parameters were defined and calibrated in the damage model proposed inhere. Finally, the validity of the damage model was verified thorough a comparison with the test results. The result shows that the damage model can well describe the seismic damage evolvement process and the damage degree of SRHSHPC frame columns, and is more reasonable in theory.