【摘要】 对4种不同配筋率和配箍形式的大尺寸钢筋混凝土桥墩进行低周反复试验。结果显示:不同损伤阶段对滞回曲线、耗能能力以及承载力的影响不同。混凝土保护层剥落、纵向钢筋的压屈可以作为各桥墩承载力下降和耗能能力下降的特征现象。对比构件的保护层混凝土剥落范围以及塑性曲率分布范围,提出等效塑性铰长度的建议式。更多还原

【Abstract】 Low cyclic reverse loading tests were carried out for four large dimensional specimens of RC bridge piers with different reinforcement ratio and stirrup form. The results indicated that different damage stages caused different influence on the hysteresis curves,energy consumption and bearing capacity. Spalling of concrete cover and longitudinal reinforcement buckling could be used as characteristics of drops of energy consumption and bearing capacity. And based on the comparison between the range of spalling of concrete cover and the plastic curvature distribution,a recommended formula of the length of equivalent plastic hinge was proposed.更多还原