| 防屈曲支撑、普通和特殊中心支撑钢框架结构抗震性能分析 |
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| 引用本文： | 张耀春,丁玉坤.防屈曲支撑、普通和特殊中心支撑钢框架结构抗震性能分析[J].建筑钢结构进展,2009,11(5):8-15. |
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| 作者姓名： | 张耀春 丁玉坤 |
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| 作者单位： | 哈尔滨工业大学,土木工程学院,哈尔滨,150090 |
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| 基金项目： | 国家自然科学基金重大项目，国家科技支撑计划多高层钢结构抗震设计与计算中的若干关键技术研究 |
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| 摘 要： | 基于考虑人字形防屈曲支撑屈服后超强和几乎不再对被撑梁提供竖向支点作用这两个因素,本文提出了采用该种支撑的钢框架结构的设计方法,并分别对采用普通及特殊中心支撑和防屈曲支撑的框架结构的抗震性能进行了对比分析.结果表明,虽然防屈曲和特殊中心支撑框架结构的层间侧移总体上大于普通中心支撑框架结构,但前者的基底剪力却大大低于后者.罕遇地震下,三种结构中的柱子基本保持弹性,普通和特殊中心支撑出现了大幅的平面外失稳,而防屈曲支撑在拉压作用下均进入屈服耗能.三种结构中被撑梁的最大挠度在支撑屈服或失稳前后分别出现在撑点两侧和撑点位置.屈服后的防屈曲支撑几乎不产生对被撑梁竖直向下的不平衡剪力,而失稳后的普通和特殊中心支撑则对被撑梁产生较大的不平衡剪力.
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| 关 键 词： | 防屈曲支撑 无粘结内藏钢板支撑剪力墙 支撑框架 普通中心支撑 特殊中心支撑 地震反应分析 |
Seismic Response Analysis of Steel Frames Braced with Buckling-Restrained, Ordinary and Special Concentrically Braces |
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| ZHANG Yao-chun,DING Yu-kun.Seismic Response Analysis of Steel Frames Braced with Buckling-Restrained, Ordinary and Special Concentrically Braces[J].Progress in Steel Building Structures,2009,11(5):8-15. |
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| Authors: | ZHANG Yao-chun DING Yu-kun |
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| Affiliation: | ZHANG Yao-chun,DING Yu-kun (School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China) |
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| Abstract: | Based on the facts of overstrength of the postyield chevron buckling-restrained brace (BRB) due to the strain-hardening effect and almost without vertical support for the braced beam by this brace,a method for design of the frame with buckling-restrained braces (BRBF) is proposed in this paper. Furthermore,a seismic response analysis has been carried out on the special concentrically braced frame (SCBF) and the ordinary concentrically braced frame (OCBF) to compare the aseismic performance of the BRBF. The ... |
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| Keywords: | buckling-restrained brace unbonded steel plate brace encased in reinforced concrete panel braced frame ordinary concentrically brace special concentrically brace seismic response analysis |
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