(华南理工大学亚热带建筑科学国家重点实验室, 广州 510640)

摘要: 与基于承载力和基于位移的抗震设计方法相比,基于能量的抗震设计方法能够更为全面地评估结构抗震性能. 梳理并总结了国内外相关文献,提出基于能量的性能指标,给出基于能量指标的性能水准量化和性能目标.同时结合现有的基于能量抗震设计方法,阐述了自复位阻尼器减震钢框架基于能量指标的抗震性能设计流程,在设计过程中结构的滞回耗能由主结构及阻尼器共同承担,从而减少地震对结构的损伤. 最后以 9 层钢框架进行实例分析,验证了该设计流程的实用性. 算例结果表明,经过基于能量的抗震性能设计后,被动控制结构相比于无控结构,主结构的滞回耗能下降了 44. 8% ~ 61%,在被动控制结构中阻尼器承担了 50. 5% ~ 68. 3% 的滞回耗能,可见附加阻尼器可有效降低主结构的地震损伤.

关键词: 基于能量抗震设计; 被动控制结构; 无控结构; 钢框架; 消能减震技术

中图分类号:TU352. 1 文献标志码:A 文章编号:1002-848X(2022)05-0055-08

DOI:10. 19701 / j. jzjg. 20210058

Energy-based seismic design method for energy-dissipation steel frame

MA Hongwei, YANG Jingyi, PAN Changqing

(State Key Laboratory of Subtropical Building Science,South China University of Technology, Guangzhou 510640, China)

Abstract: Energy-based seismic design method can evaluate structural seismic performance comprehensively cored withbearing capacity-based seismic design method and displacement-based seismic design method. Relevant domestic andforeign literature were sorted and summarizd, energy-based performance indicators was proposed, and performance levelsand performance targets based on energy index-based were gaven. At the same time, combined with the existingenergy-based seismic design method, the energy index-based seismic performance design process for the self-resettingdamper damping steel frame was described, and the hysteretic energy consumption of the structure was shared by the mainstructure and the damper to reduce earthquake damage to the structure in the design process. Finally, a 9-story steel framewas used for an example analysis to verify the practicability of the design process. The results of calculation example showthat after the energy-based seismic performance design, the hysteretic energy consumption of the main structure of thepassive controlled structure is reduced by 44. 8% ~ 61% compared with the uncontrolled structure. In the passive controlledstructure, the damper bears 50. 5% ~ 68. 3% of the hysteretic energy consumption. The additional damper can effectivelyreduce the earthquake damage of the main structure.

Keywords:energy-based seismic design; passive controlled structure; uncontrolled structure; steel frame; passive energydissipation technology

∗亚热带建筑科学国家重点实验室开放课题(2018ZB29) .

第一作者:马宏伟,博士,副教授,主要从事钢结构和组合结构研究,Email: hwma@ scut. edu. cn.

[引用本文] 马宏伟,杨静怡,潘长卿. 减震钢框架基于能量的抗震设计方法[ J] . 建筑结构,2022,52( 5) :55-62.MA Hongwei,YANG Jingyi,PAN Changqing. Energy-based seismic design method for energy-dissipationsteel frame[ J] .Building Structure, 2022, 52(5) :55-62.