减震钢框架基于能量的抗震设计方法  

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

作　　者：马宏伟[1] 杨静怡 潘长卿 MA Hongwei;YANG Jingyi;PAN Changqing(State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学亚热带建筑科学国家重点实验室,广州510640

出　　处：《建筑结构》2022年第5期55-62,共8页Building Structure

基　　金：亚热带建筑科学国家重点实验室开放课题(2018ZB29)。

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。Energy-based seismic design method can evaluate structural seismic performance comprehensively cored with bearing capacity-based seismic design method and displacement-based seismic design method. Relevant domestic and foreign literature were sorted and summarizd, energy-based performance indicators was proposed, and performance levels and performance targets based on energy index-based were gaven. At the same time, combined with the existing energy-based seismic design method, the energy index-based seismic performance design process for the self-resetting damper damping steel frame was described, and the hysteretic energy consumption of the structure was shared by the main structure and the damper to reduce earthquake damage to the structure in the design process. Finally, a 9-story steel frame was used for an example analysis to verify the practicability of the design process. The results of calculation example show that after the energy-based seismic performance design, the hysteretic energy consumption of the main structure of the passive controlled structure is reduced by 44.8%~61% compared with the uncontrolled structure. In the passive controlled structure, the damper bears 50.5%~68.3% of the hysteretic energy consumption. The additional damper can effectively reduce the earthquake damage of the main structure.

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 

分 类 号：TU352.1[建筑科学—结构工程]