摘要
偏心支撑结构是一种高烈度地震区高层建筑钢结构合理的抗侧力体系,本文针对目前偏心支撑结构存在的不足,提出一种新型的框架支撑形式——耗能器偏心支撑;并将该单斜杆(D型)耗能器偏心支撑与支撑斜杆上不加设耗能器的D型偏心支撑结构进行了对比试验。验证了该新型框架支撑形式不仅可以减少耗能梁段吸收的地震能量,而且可以减小耗能梁段的破坏程度,从而减少震后修复工作量;它具有很好的变形能力和足够的抗侧移能力。文中同时给出了设计方法,并提出了改进措施。
As a conventional resisting force system, eccentrically braced steel frame could meet the capacity and design demand, but the general application is limited, because it needs a great deal steel for larger section of beam, column and brace, the repairing work of beam and floor after earthquake is heavy, and the cost is high. This paper suggests a new braced steel frame system, energy dissipating eccentrically brace, adding an endergonic device in diagonal brace. The experimental data of new and conventional D -type eccentrically braced steel frame system were achieved by two specimens under cyclic loading. Results indicate that the new system may put off yielding, lighten earthquake input energy and breakage of the link, lighten repairing load after earthquake, and have preferable ductility and enough lateral stiffness. Meanwhile, some design and amended measures were recommended for the new system.
出处
《地震工程与工程振动》
CSCD
北大核心
2009年第3期146-152,共7页
Earthquake Engineering and Engineering Dynamics
基金
陕西省教育厅专项科研计划项目(06JK255)
西安建筑科技大学重大科技项目创新资金项目(ZX0510)
山东莱钢建设有限公司资助
关键词
D型偏心支撑
耗能梁段
耗能器
D-type eccentrically-braced steel frame
link beams
endergonic device
