设计了低周反复荷载作用下3个十字形足尺隔板贯通式梁柱节点试件(其中2个节点的柱子浇筑了混凝土,1个为空钢管)的拟静力试验。通过研究拟静力试验所得的滞回曲线求得该节点的等效阻尼比,衡量它的耗能能力。从恢复力特性曲线得到了和一次加载相接近的骨架曲线,节点的初始刚度和刚度退化等参数。通过这些从强度、变形和能量等三方面判别和鉴定隔板贯通式梁柱节点的抗震性能.并得出了一些具有参考价值的结论。
A quasi-static experiment under low reversed cyclic load of three full-size cross-shaped specimens (two specimens' columns are steel tubes filled with concrete and another is an empty steel tube) of diaphragm-through style beam-column joints is designed and conducted. With the hysteretic hoops acquired from the experiment, the effective damping ratio of the joint, with which the energy dissipation of the joint may be weighted, is calculated. From the restoring force model curves some parameters may be obtained, such as skeleton curves, which are similar to the curves under static load, initial rigidities of the joint, and rigidity degradation etc. Based on this experiment, the seismic performance of diaphragm-through style column-beam joint is appraised in respect of strength, deformation and energy dissipation, and some main conclusions are drawn.