CAJ | 학술논문

通过4个梁贯通式圆钢管混凝土柱－混凝土梁边节点试件的低周反复荷载试验，研究了此类型边节点的抗震性能。试验结果表明：随着环梁与框架梁配筋率比值、环梁宽度与圆柱直径比值的减小，试件破坏区域由框架梁根部向环梁转移，并出现框架梁根部塑性铰破坏、框架梁与环梁交界处破坏、环梁区破坏3种不同的破坏形式；梁贯通式节点的梁端内力能够可靠传递至节点核心区，环梁节点可与框架梁、钢管混凝土柱协调工作；按“强节点”设计试件塑性铰出现在框架梁根部，滞回曲线饱满，延性系数较大，环线刚度曲线呈下凹型趋于收敛，耗能能力也较大，体现出良好的抗震性能；通过合理设计的梁贯通式圆钢管混凝土柱－混凝土梁边节点受力安全可靠，可实现“强柱弱梁，节点更强”的抗震设计原则。
통과4개량관통식원강관혼응토주－혼응토량변절점시건적저주반복하재시험，연구료차류형변절점적항진성능。시험결과표명：수착배량여광가량배근솔비치、배량관도여원주직경비치적감소，시건파배구역유광가량근부향배량전이，병출현광가량근부소성교파배、광가량여배량교계처파배、배량구파배3충불동적파배형식；량관통식절점적량단내력능구가고전체지절점핵심구，배량절점가여광가량、강관혼응토주협조공작；안“강절점”설계시건소성교출현재광가량근부，체회곡선포만，연성계수교대，배선강도곡선정하요형추우수렴，모능능력야교대，체현출량호적항진성능；통과합리설계적량관통식원강관혼응토주－혼응토량변절점수력안전가고，가실현“강주약량，절점경강”적항진설계원칙。
The low-cycle reversed loading experiments of four specimens were conducted to investigate the seismic behavior of the exterior through-beam joint between concrete-filled steel tubular ( CFST ) columns and reinforced concrete beams.Experimental results show that (1) as the relative reinforcement ratio (the reinforcement ratio of ring beam /the reinforcement ratio of frame beam ) and the relative radio width ratio ( the width of ring beam /the diameter of steel tube ) decrease , the plastic hinge transfers from the frame beam to the ring beam , and three failure modes occur , which includes the failure at the frame beam root , the failure at the connection of the frame beam and the ring beam and the failure in the ring beam; ( 2 ) the internal force at the roots of the beams can be reliably transmitted to the joint , and the joint can work coordinately with the frame beam and the CFST column;and ( 3 ) for the specimens designed on the basis of the principle of “Strong Joint”, the plastic hinge appears at the frame beam root with plump hysteretic curves , relatively large ductility coefficient , concave and convergent stiffness curves and excellent energy dissipation ability , which means that the seismic behavior is good .Therefore, the exte-rior through-beam joint obtained through reasonable design is safe and reliable under stress , and it can realize the anti-seismic design principle of “Strong Column with Weak Beam is , Stronger in Joints”.