【摘要】 根据6根配置HRBF500级细晶钢筋的混凝土柱的低周反复加载试验,计算不同轴压比、剪跨比和配箍率构件的屈服位移和滞回耗能。根据经典Park模型存在的若干问题,引入比例参数协调低周反复加载极限位移与单调加载极限位移的关系,并局部修正Park模型。最后,对6个构件进行了加载全过程的损伤分析,总结损伤趋势和规律,分析轴压比、剪跨比和配箍率对损伤发展趋势的影响,并给出相应损伤评价准则和设计建议。更多还原

【Abstract】 Based on the data of six HRBF500 RC columns cycle loading test,yield displacement and hysteretic energy of columns are calculated at the different axial compression ratio,shear span ratio and stirrup ratio.According to some problems of the classical model,scale parameter is proposed to coordinate the displacements of cycle loading and monotonic loading for amending the classical model.The columns’damage process is analyzed by the amended dynamic model.The trend and law of the damage process are summarized considering the effect of axial compression ratio,shear span ratio and stirrup ratio.Finally the criterion for evaluation and design proposals are given.更多还原