【摘要】 通过低周期反复荷载作用下的钢骨高强混凝土(HSRC)框架柱的试验,探讨了HSRC框架柱破坏模式,分析了轴压比、剪跨比、含钢率等对HSRC框架柱延性的影响,得到HSRC框架柱的滞回曲线和骨架曲线,分析了HSRC框架柱骨架曲线及滞回环规则特性,给出了HSRC框架柱的延性系数和等效黏滞阻尼系数。研究了HSRC框架柱强度衰减和刚度退化的原因,给出其强度衰减指标和刚度退化计算公式。更多还原

【Abstract】 According to the test results of steel reinforced high strength concrete(HSRC)frame columns under the reversed cyclic loading,the failure characters of steel reinforced high strength concrete columns were studied,the main factors such as axial compression ratio,shear span ratio,stirrup ratio,concrete strength and steel ratio,which affect the ductility of HSRC frame columns were studied.The test results had shown that the displacement ductile coefficient and equivalent hysteretic damping coefficient of HSRC frame column was higher than that of reinforced high strength concrete column and close to that of steel reinforced concrete column.Based on the tests,the loading-displacement hysteretic curves of HSRC frame column had been gained,and the skeleton curves and hysteretic rules were affirmed.The reason that causes strength reduction and stiffness-degrading of HSRC frame column was analyzed.At the same time,the calculating formulas of strength reduction index and stiffness-degrading of HSRC frame column wss given.更多还原