| 含偏心支撑小高层钢框架结构的抗震性能 |
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| 引用本文： | 熊俊,王元清,石永久,王斌斌.含偏心支撑小高层钢框架结构的抗震性能[J].沈阳建筑工程学院学报(自然科学版),2010,26(1). |
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| 作者姓名： | 熊俊 王元清 石永久 王斌斌 |
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| 作者单位： | 清华大学土木工程系教育部振动与结构重点实验室,北京,100084 |
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| 摘 要： | 目的 研究多层偏心支撑钢框架在地震作用下的弹、塑性力学性能、地震响应及其耗能能力.方法 采用通用有限元计算软件SAP2000,对内蒙古某9层商住楼分别建立纯框架、中心支撑框架及偏心支撑框架结构模型,计算了罕遇地震下结构刚度、内力分布、振动模态及荷载一位移曲线等,并采用多条地震波分别对中心支撑和偏心支撑结构体系进行了弹性时程及弹塑性时程的对比分析,比较了两种结构体系的动力特性及抗震性能.结果 在小震作用下(弹性阶段),偏心支撑和中心支撑结构远高于纯框架结构的抗侧移刚度,足以满足规范对多层钢结构的抗侧移要求;在大震作用下(塑性阶段),偏心支撑结构耗能能力优于中心支撑结构和纯框架结构,地震响应小于中心支撑结构,具有更高的结构屈服后塑性抗侧移刚度.结论 偏心支撑钢框架结构抗震性能较好,能够避免大震作用下结构的突然倒塌.
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| 关 键 词： | 偏心支撑钢框架 多层建筑 抗震性能 有限元 |
Seismic of Eccentrically Braced Multi-Storey Steel Frames |
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| XIONG Jun,WANG Yuanqing,SHI Yongjiu,WANG Binbin.Seismic of Eccentrically Braced Multi-Storey Steel Frames[J].Journal of Shenyang Archit Civil Eng Univ: Nat Sci,2010,26(1). |
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| Authors: | XIONG Jun WANG Yuanqing SHI Yongjiu WANG Binbin |
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| Affiliation: | XIONG Jun,WANG Yuanqing,SHI Yongjiu,WANG Binbin(Key Laboratory of Structural Engineering , Vibration of Education Ministry,Civil Engineering Department of Tsinghua University,Beijing China,100084) |
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| Abstract: | The eccentrically braced steel frame is a good moment-resisting system.In order to study its seismic performance and energy dissipation capacity in severe earthquake,this paper,based on an eccentrically braced multi-storey apartment,with software SAP2000,has calculated the stiffness and stress distributions,the vibration modes and load-displacement curves etc in severe earthquake,compared the dynamic/aseismatic characteristics of eccentrically/centrally braced frames and bare steel frames by elastic and ela... |
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| Keywords: | eccentrically braced structure multi-storey building seismic performance finite element |
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