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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Nonlinear finite element analysis of seismic performance of multi-cavity concrete-filled steel tube T-column H-beam assembled joints

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多腔钢管混凝土 T 形柱 H 型钢梁装配节点抗震性能研究

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Nov.2023, Vol.46 No.11: 1506-1509, 1572

DOI: 10.3969/j.issn.1003-5060.2023.11.011

Authors

GUO Jianying, ZHANG Chuanqi, WAN Haiying, CHEN Anying

(School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: In order to control the damage and realize the post-earthquake repair, an assembled joint of multi-cavity concrete-filled steel tube T-column H-beam is proposed based on the idea of slip energy dissipation. By changing the thickness of the upper and lower connecting plates and the connection mode of the web to change the joint stiffness, the hysteresis curve, skeleton curve, mechanical indexes and rotational capacity of six specimens were obtained through the simulation analysis. The results show that the reasonable control of the thickness of flange connecting cover plates can transfer the plastic hinge and protect the core region of the joint, so the joint can be repaired in time. The web connector can improve the stiffness, bearing capacity and ductility of the joint. The web connector should not be too large and should maintain a certain buffering distance from the flange.

Keywords: multi-cavity concrete-filled steel tube T-column; assembled joint; hysteresis curve; skeleton curve; rotational capacity

作者信息

郭建营，张传琪，完海鹰，陈安英

（合肥工业大学土木与水利工程学院，安徽合肥230009）

摘要和关键词

摘要: 文章基于滑移耗能思想, 提出一种可以控制损伤并实现震后修复的多腔钢管混凝土 T 形柱 H 型钢梁装配节点; 通过改变上下连接板件的厚度与腹板连接方式改变连接处刚度, 对 6 个试件进行模拟分析, 得到相应的滞回曲线、骨架曲线、力学性能指标及转动能力。研究结果表明: 合理控制翼缘连接盖板厚度可以转移塑性铰、保护节点核心区, 使节点具有及时修复的功能; 腹板连接件可以提高节点的刚度、承载力及延性; 腹板连接件不宜过大, 应该与翼缘保持一定的缓冲距离。

关键词: 多腔钢管混凝土 T 形柱；装配式节点；滞回曲线；骨架曲线；转动能力

Funding

安徽省高校协同创新资助项目（GXXT-2019-005）

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