为了调查一个合成框架的地震表演,钢包括了水泥(SRUHSC ) 柱和钢增强了的增强的极端高张力水泥(SRC ) 横梁,六个内部框架关节标本在低轮转地侧面的负担下面被设计并且测试。轴的负担比率和容量的马镫比率的效果包括裂缝模式,失败模式,韧性,精力驱散能力,力量降级和刚硬在框架关节表演的特征上被学习降级。当塑料绞链出现在横梁结束时,所有联合标本在联合核心区域与曲折砍失败以一种可锻的方式表现了,这被发现当塑料绞链出现在横梁结束时。当轴的负担比率减少了,容量的马镫比率增加了,韧性和关节的精力吸收能力增加了。排水量韧性系数和关节的相等的抑制系数在增强的水泥(SRC ) 框架关节和 RC 框架连接的钢的相应系数之间掉落了。轴的负担比率和容量的马镫比率在僵硬降级上的力量降级和更多的影响上有更少的影响。关节的僵硬为低容量的马镫比率和高轴的负担比率更显著地降级。与更好地震的性能从 SRUHSC 合成框架关节标本获得的特征可以是在未来工程应用的一本有用参考书。关键词轮转的测试 - 轴的负担比率 - 容量的马镫比率 - 韧性 - 力量降级 - 僵硬降级 - 钢增强了极端高力量水泥 - 旁边支持的横梁列关节:不到资助号码 50878037 的中国的国家自然科学基础
To investigate the seismic performance of a composite frame comprised of steel reinforced ultra high-strength concrete (SRUHSC) columns and steel reinforced concrete (SRC) beams, six interior frame joint specimens were designed and tested under low cyclically lateral load. The effects of the axial load ratio and volumetric stirrup ratio were studied on the characteristics of the frame joint performance including crack pattern, failure mode, ductility, energy dissipation capacity, strength degradation and rigidity degradation. It was found that all joint specimens behaved in a ductile manner with flexural-shear failure in the joint core region while plastic hinges appeared at the beam ends. The ductility and energy absorption capacity of joints increased as the axial load ratio decreased and the volumetric stirIup ratio increased. The displacement ductility coefficient and equivalent damping coefficient of the joints fell between the corresponding coefficients of the steel reinforced concrete (SRC) frame joint and RC frame joint. The axial load ratio and volumetric stirrup ratio have less influence on the strength degradation and more influence on the stiffness degradation. The stiffness of the joint degrades more significantly for a low volumetric stirrup ratio and high axial load ratio. The characteristics obtained from the SRUHSC composite frame joint specimens with better seismic performance may be a useful reference in future engineering applications.