分段控制型全钢支撑滞回性能研究

辛力; 李佳珂; 张龙; 连鸣; 程倩倩; 史生志

doi:10.3724/j.gyjzG24112103

分段控制型全钢支撑滞回性能研究

doi: 10.3724/j.gyjzG24112103

辛力¹,
李佳珂²,
张龙²,
连鸣^2,3, ,,
程倩倩¹,
史生志¹

1. 中国建筑西北设计研究院有限公司, 西安 710018;
2. 西安建筑科技大学土木工程学院, 西安 710055;
3. 西安建筑科技大学结构工程与抗震教育部重点实验室, 西安 710055

基金项目:

陕西省科协青年人才托举计划项目（20230426）；中建股份科技研发课题（CSCEC-2023-Z-18，CSCEC-2025-Z-22）；陕西省秦创原“科学家+工程师”队伍建设（2022KXJ-084）。

详细信息

作者简介:
辛力，博士，正高级工程师，主要从事新型建筑减隔震产品设计及研发，28395099@qq.com。

通讯作者:
连鸣，博士，教授，博士生导师，主要从事可恢复功能钢结构体系抗震机理与设计方法方面的研究，lianming@xauat.edu.cn。

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出版历程
- 收稿日期: 2024-11-21
- 网络出版日期: 2026-07-06

Research on the Hysteretic Performance of Sectional Control-Type Steel Braces

1. China Northwest Building Design and Research Institute Co., Ltd., Xi'an 710018, China;
2. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
3. Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education, Xi'an University of Architecture and Technology, Xi'an 710055, China

摘要

摘要: 为了充分发挥传统钢支撑刚度大的优势，提升其变形能力和滞回性能，优化传统屈曲约束支撑施工不方便等问题，提出一种新型分段控制型全钢支撑。采用ABAQUS有限元软件建立了数值模型，并通过该新型支撑拟静力试验验证了模型的准确性。与传统钢支撑性能进行对比，深入研究了新型分段控制型全钢支撑的滞回性能。通过参数分析研究了初始缺陷、耗能段长度、耗能段截面尺寸、弹性段截面尺寸对支撑滞回性能的影响规律。分析结果表明：该新型支撑具有良好的变形能力和滞回性能，且对初始缺陷变化不敏感；随着耗能段长度的减小，支撑承载力、刚度、耗能能力均有所提升，但是耗能段长度过小会导致支撑提前破坏，建议两端耗能段占总长度的比例为0.3~0.4；该支撑的滞回性能受耗能段截面尺寸影响最大，截面尺寸的增加将显著提升支撑的承载力、刚度、耗能能力等；弹性段截面尺寸不宜过大，否则会导致支撑提前破坏或出现刚度退化现象，建议耗能段与弹性段的面积比值为0.3~0.4。
- 分段控制 /
- 新型支撑 /
- 有限元分析 /
- 滞回性能 /
- 参数分析
Abstract: An innovative sectional control-type steel brace （SCTS） was developed to fully utilize the advantages of traditional steel braces， such as their high stiffness， while effectively enhancing deformation and hysteretic performance， and addressing the construction inconveniences associated with traditional buckling-restrained braces. A numerical model of the SCTS was established adopting ABAQUS finite element software， and its accuracy was verified through a quasi-static test. The hysteretic performance of the SCTS was investigated in detail and compared with that of a traditional steel brace. A parametric study was conducted to analyze the influence of initial imperfection， length of the energy dissipation section， cross-sectional dimensions of the energy dissipation section， and cross-sectional dimensions of the elastic section on the hysteretic performance of the SCTS. The results showed that the SCTS exhibited excellent deformation capacity and hysteretic performance. The performance of the SCTS was not sensitive to variations in initial imperfection. As the length of the energy dissipation section decreased， the bearing capacity， stiffness， and energy dissipation capacity increased. However， an excessively short energy dissipation section could lead to premature failure of the SCTS. Therefore， it is recommended that the ratio of the combined length of the two end energy dissipation sections to the total length should be between 0.3 and 0.4. The hysteretic performance of the SCTS was most affectd by the cross-sectional dimensions of the energy dissipation section. Increasing these dimensions significantly enhanced the bearing capacity， stiffness， and energy dissipation capacity. Conversely， an overly large cross-section for the elastic section could lead to premature failure or stiffness degradation. Thus， the recommended ratio of the cross-sectional area of the energy dissipation section to that of the elastic section should be between 0.3 and 0.4.
- sectional control /
- innovative brace /
- finite element analysis /
- hysteretic performance /
- parametric analysis

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参考文献(24)

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