钢管煤矸石混凝土梁柱加强环中节点低周反复荷载试验

Experiment on Middle Joints of Gangue Concrete-Filled Steel Tubes with Ring Stiffeners under Reversed Low Cyclic Loads

目的研究轻骨料煤矸石混凝土在钢管混凝土节点中的应用.方法对钢管煤矸石混凝土加强环中柱节点,在低周反复循环荷载作用下,进行了节点的抗震性能研究.结果滞回曲线饱满,滞回性能良好,骨架曲线阶段性明显,节点有很好的抗震性能,耗能能力以及良好的延性.结论钢管煤矸石混凝土加强环的钢管柱及框架节点设计满足强柱弱梁以及强核心弱构件的抗震设计原则,试件节点是安全可靠的,设计方法可行,符合设计要求,能够保证钢管煤矸石混凝土框架在地震区的应用.

In order to study the application of gangue light-weight concrete to concrete-filled steel tubes, one full-size middle joint of the concrete-filled steel tubes column-beam with ring stiffeners was tested under reversed low cyclic loads. The hysteretic behavior, envelop curve, energy dissipation and ductility of the connection were analyzed. The results show that the joints of gangue concrete-filled steel tubes are featured with excellent hysteretic behavior, quake resistance, energy dissipation and ductility, which meet the rule of strong columns and weak beams, strong joints and can promote the wide-spreading application of the gangue concrete-filled steel tube frame in the earthquake areas.