柔性连接的配筋砌体墙混凝土框架抗震性能理论研究

配筋砌体墙与周边框架的连接方式对框架结构的抗震性能影响较大。设计了3榀足尺的单层单跨钢筋混凝土框架,对其进行低周反复荷载作用下的抗震性能研究。分析了三种柔性连接形式——连接键连接,墙梁连接、墙柱连接的框架的破坏特征、荷载-位移滞回曲线、骨架曲线、位移延性系数、刚度退化、耗能特性。结果表明:与连接键连接和墙柱连接类型相比,墙梁连接类型的滞回曲线比较饱满;在水平地震作用下,墙梁连接类型具有较好的耗能能力。

Theoretical research on seismic performance of RC frame with reinforced masonry wallin the flexible connection

The connection type between reinforced masonry wall and the surrounding frame has a significant influence on the seismic performance of RC frames. In this study, three full-scale, one-bay and one-story RC frame specimens were researched under low-cycle reversed loads. The damage behavior, the force-displacement hysteretic curves and skeleton curves, displacement ductility, stiffness degradation, and energy-dissipation capacity of the specimens were analyzed in the flexible connection types, including connecting button connection type, wall-beam connection type, and wall-column connection type. The results show: compared with connecting button connection type and wall-column connection type, the hysteretic curves of wall-beam connection type are more plump; under horizontal earthquake action, wall-beam connection has better energy dissipation capacity.