| 竖向恒载对框架结构动力稳定性影响研究 |
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| 引用本文： | 王晓峰,秦荣,刘光焰.竖向恒载对框架结构动力稳定性影响研究[J].广西工学院学报,2010,21(2):77-80. |
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| 作者姓名： | 王晓峰 秦荣 刘光焰 |
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| 作者单位： | 1. 广西大学,土木建筑工程学院,广西,南宁,530004;桂林理工大学,土木与建筑工程学院,广西,桂林,541004
2. 广西大学,土木建筑工程学院,广西,南宁,530004 |
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| 基金项目： | 广西自然科学基金项目，广西区教育厅科研项目 |
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| 摘 要： | 以框架结构为例,建立了结构动力稳定性分析的基本模型,提出了利用动力响应的敛散性来判断结构动力稳定性的具体方法.通过算例分析,给定不同的竖向恒载值,得到框架结构在水平动力荷载作用下的临界荷载值,结果表明,竖向恒载对动力稳定性有明显影响,但动力临界荷载与相应静力临界荷载的比值变化不大.
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| 关 键 词： | 竖向荷载 框架 动力稳定 临界荷载 |
Study on dynamic stability of frame structure under vertical dead loads |
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| WANG Xiao-feng,QIN Rong,LIU Guang-yan.Study on dynamic stability of frame structure under vertical dead loads[J].Journal of Guangxi University of Technology,2010,21(2):77-80. |
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| Authors: | WANG Xiao-feng QIN Rong LIU Guang-yan |
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| Affiliation: | 1.College of Civil and Architectural Engineering,Guangxi University,Nanning 530004,China;2.College of Civil Engineering,Guilin University of Technology,Guilin 541004,China) |
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| Abstract: | The model to study the dynamic stability of frame structure by time-history analysis is discussed in this paper,and the convergence of displacement response is used for determining dynamic stability of frame structure.An example is given for a frame under horizontal dynamic loading at different vertical dead loadings,and the re-sult shows that vertical dead loads have great influence to dynamic critical load for frame structure,but the ratio of dynamic critical load to static critical load does not varied so obvious which is between 0.55 and 0.7. |
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| Keywords: | vertical load frame dynamic stability critical load |
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