[1]赵 毅,段松甫,牛中浩.钢管混凝土异形柱-钢梁节点恢复力模型研究[J].郑州大学学报(工学版),2022,43(6):104-110.
 ZHAO Y,DUAN S P,NIU Z H.Research on Restoring Force Modeling of Concrete-filled Steel Tubular Special-Shaped Column-Steel Beam Nodes[J].Journal of Zhengzhou University (Engineering Science),2022,43(6):104-110.
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钢管混凝土异形柱-钢梁节点恢复力模型研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
43
期数:
2022年6期
页码:
104-110
栏目:
出版日期:
2022-09-02

文章信息/Info

Title:
Research on Restoring Force Modeling of Concrete-filled Steel Tubular Special-Shaped Column-Steel Beam Nodes
作者:
赵 毅 段松甫 牛中浩
Author(s):
ZHAO YDUAN S PNIU Z H
文献标志码:
A
摘要:
为了兼顾钢管混凝土异形柱节点的抗震性能和整体美观性,提出一种新型侧板连接T形钢管混凝土柱—钢梁节点。对7个节点试件在低周往复荷载作用下的抗震性能进行试验研究,考虑了有无侧板、侧板长度、有无约束拉杆和不同轴压比四种影响因素。观察节点的破坏过程、记录试件的滞回曲线及骨架曲线。试验结果表明:试件的破坏模式分为有侧板连接试件的梁铰破坏和无侧板连接试件的柱铰破坏;新型侧板连接T形钢管混凝土柱—钢梁节点试件的滞回曲线饱满,抗震性能良好。基于试验结果,利用极限荷载和其所对应的位移进行无量纲化处理得到三折线型骨架曲线模型,分析各试件的刚度退化规律及滞回规则,建立新型T形钢管混凝土柱-钢梁节点的恢复力模型,对比试验结果验证了所提出的恢复力模型的正确性,为此类节点抗震性能的深入研究奠定了基础。
Abstract:
To take into account the seismic performance and overall aesthetics of special-shaped concrete-filled steel tubular column joints, a new side plate connecting T-shaped steel tubular special-shaped column-steel beam node is proposed. The experimental study of seven T-shaped concrete-filled steel tubular column-steel beam joints with side plates under low cyclic loading is carried out. The influencing factors such as the presence or absence of side plates, the length of side plates, the presence or absence of restrained tie rods, and the axial compression ratio are considered. Observe the failure process of the node, record the hysteresis curve and skeleton curve of specimens. The experimental results show that the failure modes of specimens are divided into beam hinge failure with side plates connection specimens and column hinge failure without side plates connection specimens. The hysteretic curve of the new type of concrete-filled steel tubular column and steel beam joints connected by side plates are full and the seismic performance is well. ba<x>sed on experimental results, using the limit load and its corresponding displacement for dimensionless processing to obtain the Three fold skeleton curve model, analyze all the specimens stiffness degradation law and hysteresis curve paths, and establish the restoring force model of the new T-shaped concrete-filled steel tubular column-steel beam joint, contrast experimental results verify the correctness of the proposed restoring force model., which lays a foundation for the in-depth study of the seismic performance of such joints.
更新日期/Last Update: 2022-10-03