【摘要】 轴压比对RC框架结构"强柱弱梁"的实现有重要的影响,之前大量研究只是表明,高轴压比不能有效地实现"强柱弱梁"屈服机制.现有文献并未给出现行规范下实际可供参考的轴压比取值范围,以保证结构更好地实现强柱弱梁屈服机制.利用ABAQUS,通过改变混凝土等级的方法,不仅能够实现不同柱轴压比,还能保证梁、柱刚度比不发生变化.采用弹塑性动力时程分析方法,更有效地分析轴压比的影响,提出可供参考的轴压比取值范围建议,保证结构"强柱弱梁"屈服机制的实现,为工程设计提供一定的参考.更多还原

【Abstract】 The values of axial compression ratios have remarkable effect on the realization of the "weak beam-strong column"mechanism. Plenty of studies revealed that high limit axial compression ratio values couldn’t effectively guarantee the realization of "strong column-weak beam " yield mechanism. The available literature did not provide axial reference compression ratios value range for engineering practice.With the aid of the structural analysis program ABAQUS,by varying concrete grade,different column axial compression ratios without changing stiffness ratios are got. By using elastic-plastic dynamic time history analysis,the axial compression ratios value range is analysed effectively and the realization of"weak beam-strong column"mechanism can be guaranteed. The present study may provide reference for engineering design.更多还原