Abstract：A series of steel reinforced concrete (SRC) columns, with high steel ratio of 15% and different shape distribution coefficient D values, were tested under cyclic loading. Based on the experimental results and finite element analysis results, the influences of shape distribution of encased steel section on those seismic performance indices, such as skeleton curve, hysteretic curves, energy dissipation capacity and ductility of SRC columns with high steel ratio, were studied, and the interaction mechanism among the encased steel, steel bars and concrete was analyzed. The results indicate that SRC columns with high steel ratio possess outstanding seismic behaviors; the bearing capacity and energy dissipation capacity may increase with increasing the factor of section modulus α and D values; the factor of confined concrete β may significantly affect the bearing capacity, but it has little effect on the hysteresis loops and ductility. The decline of bearing capacity of SRC columns may primarily attribute to the buckling failure of steel plates and the crushing failure of concrete. The bearing capacity, ductility and energy dissipation in the later period of structural members mainly rely on the contributions of encased steel.
赵宪忠 杨笑天 陈以一. 钢骨截面延展性对高含钢率SRC柱滞回性能的影响研究[J]. 土木工程学报, 2016, 49(3): 80-90.
Zhao Xianzhong Yang Xiaotian Chen Yiyi. Effect of shape distribution of encased steel section on hysteretic performance of steel reinforced concrete columns with high steel ratio. 土木工程学报, 2016, 49(3): 80-90.
