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为研究钢骨混凝土T形截面柱节点的构造措施及抗震性能,对6个钢骨混凝土T形截面异形柱节点及2个混凝土T形截面异形柱节点进行试验,考虑单、双向荷载作用下节点低周反复荷载作用,测得了节点梁端荷载-位移曲线和骨架曲线以及各阶段的荷载和位移值,并分析了节点的延性、耗能、抗剪性能、功比指数及破坏形态。试验研究表明,该节点形式具有很好的延性和能量耗散能力,证明配有钢管和型钢的钢骨混凝土T形柱和钢筋混凝土梁连接方法是可靠的,节点能够有效传递弯矩和剪力。由于柱为钢骨混凝土柱,节点核心区的抗剪承载力有了较大的提高。双向荷载作用下试件的屈服荷载、极限荷载及破坏荷载相对单向情况下的均较小。
In order to study the structural measures and the seismic performance of T-shaped column nodes of steel reinforced concrete (SFST), six T-shaped special-shaped column nodes and two T-shaped special-shaped column nodes were tested. Considering the effect of single and bi- The load-displacement curves and skeleton curves at each beam end and the loads and displacements at each stage were measured. The ductility, energy dissipation, shear resistance, power ratio index and failure modes of the joints were analyzed. Experimental results show that the joint form has good ductility and energy dissipation capacity. It is proved that the connection method of T-shaped columns and reinforced concrete beams with steel pipe and section steel is reliable and the joints can effectively transfer bending moment and shear force . Because the column is a SRC column, the shear strength of the core of the node has been greatly improved. The yield load, the ultimate load and the failure load under the two-way load are both smaller than those under the unidirectional condition.