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采用符合实际受力特点的柱端加载,对剖分T型钢连接的边框架节点进行低周反复试验。试验结果表明:加载过程中T型件翼缘与腹板交界处的应力最大,最先形成塑性铰;柱翼缘和梁翼缘在加载过程中均处于弹性阶段,而节点域的剪切应变达到了屈服应变。通过测量发现:梁柱相对转角达到了美国规范的要求,同时,由滞回曲线和骨架曲线可知该节点具有较好的延性和耗能特性。
The column end loading, which is in line with the actual force characteristics, is used to carry out the low-cycle repeated test on the side frame joints of split T-shaped steel connections. The experimental results show that the stress of the flange of T-shaped part and the web at the interface is the largest, and the plastic hinge is the first to be formed. During the loading process, both the column flange and the beam flange are in elastic stage, while the shear strain in the node region reaches Yield strain. It is found through the measurement that the relative rotation angle of beam and column meets the requirements of the US code. At the same time, the hysteresis curve and the skeleton curve show that the node has good ductility and energy dissipation characteristics.