【摘要】 通过7根加载角度不同的框架柱在低周往复斜向水平荷载作用下实验,研究矩形截面双向受剪框架柱的延性性能和刚度退化.分析了矩形截面双向受剪框架柱的滞回曲线和骨架曲线,并利用能量等效法对不同加载角度的框架柱的延性系数进行了计算.结果表明,斜向水平荷载作用下矩形截面框架柱的滞回曲线与正向水平荷载作用下框架柱的滞回曲线在形状上并无明显差异,随着加载角度增大,矩形截面双向受剪框架柱的延性系数有降低趋势.低周往复斜向水平荷载作用下所有矩形截面框架柱的破坏均为剪切脆性破坏,应加强其抗震性设计.更多还原

【Abstract】 To investigate the ductility property and rigidity degeneration of rectangular frame columns(RFC)under bilateral horizontal load,a total of 7 RFC with different loading angle subjected to low-cyclic oblique horizontal load were tested.By analyzing the hysteresis loop and skeleton curve of RFC subjected to bilateral shear force and calculating the ductility coefficient of RFC with different loading angle through energy equivalent method,the results indicated that there were not different significantly for hysteretic loop of RFC subjected to oblique or forward horizontal load.With the increasement of loading angle,the ductility coefficient of RFC subjected to bilateral shear force were decreased.Moreover,all rectangular frame columns subjected to oblique horizontal load were failure in shear,which was brittle failure,and the anti-seismic design about RFC under oblique horizontal load should be enhanced.更多还原