屈曲约束支撑钢-竹组合框架抗震性能
PDF下载 (130)陈翰驰,杨晓婷,丁静姝,童科挺,李玉顺.屈曲约束支撑钢-竹组合框架抗震性能[J].宁波大学学报(理工版),2025,38(4):28-39.DOI:10.20098/j.cnki.1001-5132.2024.1209
CHEN Hanchi,YANG Xiaoting,DING Jingshu,TONG Keting,LI Yushun.Seismic behavior of buckling-restrained braced steel-bamboo composite frame structure[J].Journal of Ningbo University(Natural Science & Engineering Edition),2025,38(4):28-39.DOI:10.20098/j.cnki.1001-5132.2024.1209
| Title: | Seismic behavior of buckling-restrained braced steel-bamboo composite frame structure |
| 作者: | 陈翰驰, 杨晓婷, 丁静姝, 童科挺, 李玉顺 |
| Author(s): | CHEN Hanchi, YANG Xiaoting, DING Jingshu, TONG Keting, LI Yushun |
| 关键词: | 钢-竹组合框架; 屈曲约束支撑; 抗震性能; 滞回曲线; 耗能能力 |
| Keywords: | steel-bamboo composite frame; buckling-restrained brace; seismicbehavior; hysteretic curve; energy dissipation coefficient |
| 分类号: | TU398+.9 |
| DOI: | 10.20098/j.cnki.1001-5132.2024.1209 |
| 文献标识码: | A |
| 摘要: | 钢-竹组合框架作为由重组竹材与冷弯薄壁型钢通过结构胶黏结复合而成的一种新型组合结构，采用T型连接板将工字形梁柱构件进行组合连接。为提升钢-竹组合框架结构的抗震性能，针对2个相同设计的两层单跨钢-竹组合框架试件，分别安装一字型钢支撑和屈曲约束支撑，开展拟静力对比试验，并结合有限元模拟分析探讨结构的破坏形态、耗能性能、滞回特性等抗震性能指标。结果表明：相较一字型钢支撑，屈曲约束支撑表现出更优异的滞回耗能性能，框架破坏模式由节点破坏变为柱脚弯曲破坏，框架极限承载力提升23.3%；屈曲约束支撑试件的累积塑性变形能力系数达到531，满足美国规范ANSI/AISC341-10规定的200倍限值要求；有限元模拟与试验结果高度吻合，可为后续钢-竹组合框架的深入研究提供参考依据。 |
| Abstract: | Steel-bamboo composite frame is a new type of composite structure formed by recombined bamboo and cold-formed thin-walled steel sections bonded by structural adhesive, which combines I-beams and I-columns through T-plates. In order to improve its seismic performance, this paper presents static tests, together with a parametric analysis and finite element analysis, on two double-story single-span steel-bamboo composite frames of the same design with one-beam steel bracing and buckling-restrained bracing installed respectively. The results show that: compared with the one-span steel brace, the buckling-restrained brace shows good hysteretic energy dissipation performance, and the damage mode of the frame is changed from nodal damage to bending damage of the column foot; the ultimate load carrying capacity is increased by 23.3%; the cumulative plastic deformation capacity coefficient of the buckling-restrained brace specimen reaches 531, which meets the requirement of coefficient greater than 200 in the American specification ANSI/AISC341-10. The finite element simulation results are in good agreement with the test results, which can provide a reference basis for the subsequent research of the combined frame. |
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| 备注/Memo: | 收稿日期：2024−12−20 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ 基金项目：国家自然科学基金（52278264，51978345） 第一作者：陈翰驰，硕士研究生，主要研究方向为组合结构。E-mail: 2311110107@nbu.edu.cn *通信作者：童科挺，博士研究生，主要研究方向为组合结构。E-mail: tongketing@126.com 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
