【摘要】 为了系统研究耗能梁段与RC框架梁连接节点的滞回性能,基于文献[11]所进行的低周往复加载试验,以S-5试件为BASE试件,设计了螺杆布置位置、螺杆数量、U型板侧边加胶、底板长度、螺杆钢材强度等级5个系列9个试件。采用ABAQUS对S-5及系列试件的滞回性能进行了模拟,分析了相关设计参数对连接节点滞回性能、承载力、抗侧刚度、耗能的影响规律。研究结果表明:耗能梁段与RC梁之间的连接可采用螺杆加外包钢的构造方式,螺杆位置、底板长度、螺杆钢材强度等级对此类节点的力学性能影响相对较小。但螺杆数量需合理确定,其数量过少将导致螺杆承载力不足,节点易发生脆性破坏。U型侧板同RC梁侧面增设结构胶可改善节点的刚度、承载力及耗能能力。更多还原

【Abstract】 In order to investigate the hysteretic behavior of the connection between RC frame beam and energy dissipation link,the test specimen S-5 in reference [11] is selected as the base model for a further FE analysis.A series of models are designed,with critical parameters such as the layout of steel shaft,the number of steel shaft,structural glue,the length of bottom plate,and steel strength of steel shaft.The ABAQUS program is used to simulate the structural performance of this connection,and the hysteretic behavior,lateral strength,stiffness degradation and energy dissipation are analyzed.The results show that the connected detail between RC beam and energy dissipation link can use steel shaft and U-shape steel plate.The layout of steel shaft,length of bottom plate,and strength of steel shaft had a slight effect on the hysteretic behavior of connection.The number of steel shaft should be determined reasonablly,which would lead to the fracture failure due to less steel shaft number.In addition,the structural glue used between RC beam and U shaped steel plate can increase the stiffness,lateral strength and energy dissipation.更多还原