[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(06):104-110.[doi:10.13705/j.issn.1671-6833.2022.06.012]
　ZHAO Yi,DUAN Songfu,NIU Zhonghao.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(06):104-110.[doi:10.13705/j.issn.1671-6833.2022.06.012]

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钢管混凝土异形柱-钢梁节点恢复力模型研究()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

43

期数:

2022年06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¹;  段松甫¹ ;  牛中浩¹; 2

1. 中原工学院 建筑工程学院,河南 郑州 451191;2. 英国布鲁内尔大学 土木环境工程学院,英国 伦敦 UB8 3PH

Author(s):

ZHAO Yi¹;  DUAN Songfu¹;  NIU Zhonghao¹; 2

1.School of Architecture and Civil Engineering, Zhongyuan University of Technology, Zhengzhou 451191, China; 

2.Department of Civil & Environmental Engineering, Brunel University London, London UB8 3PH, the United Kingdom

关键词:

异形柱; 钢管混凝土; 节点; 滞回曲线; 恢复力模型

Keywords:

special-shaped;  concrete-filled steel tubular (CFST);  node;  hysteresis curve;  restoring force model

分类号:

TU399

DOI:

10.13705/j.issn.1671-6833.2022.06.012

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:

In order to achieve the seismic performance and overall aesthetic feature of special-shaped concrete-filled steel tubular column joints, a new side plate connecting T-shaped steel tubular special-shaped column-steel beam node was proposed. The experimental study of seven T-shaped concrete-filled steel tubular column-steel beam joints with side plates under low cyclic loading was 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 were examined. The failure process of the node was observed, the hysteresis curve and skeleton curve of specimens were recorded. The experimental results showed that the failure modes of specimens were 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 were full and the seismic performance was well. Based on experimental results, the limit load and its corresponding displacement for dimensionless processing was used to obtain the three fold skeleton curve model, all the specimens′ stiffness degradation law and hysteresis curve paths were analyzed, and the restoring force model of the new T-shaped concrete-filled steel tubular column-steel beam joint was established, contrast experimental results verified the correctness of the proposed restoring force model.The finding of this study a foundation for the in-depth study of the seismic performance of such joints.

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