| 多点输入下大跨度空间结构的消能减震分析 |
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| 引用本文： | 杜东升,李爱群,徐赵东,叶继红,沈顺高.多点输入下大跨度空间结构的消能减震分析[J].特种结构,2005,22(2):33-35,40. |
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| 作者姓名： | 杜东升 李爱群 徐赵东 叶继红 沈顺高 |
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| 作者单位： | 1. 东南大学土木工程学院,东南大学混凝土及预应力混凝土结构教育部重点实验室,南京,210096
2. 中国航空工业规划设计研究院,北京,100011 |
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| 摘 要： | 采用FFT技术模拟多点输入下的竖向和水平地震加速度时程,分别以多点输入法和一致输入法对北京四位机库的水平和竖向振动进行计算,对比了多点输入和一致输入下计算结果的差异,并分析了北京四位机库安装粘弹性阻尼器前后结构地震响应的变化.计算结果表明,大跨空间结构采用粘弹性阻尼器时计算地震响应,必须考虑地震动的空间相干特性.
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| 关 键 词： | 多点输入 大跨空间结构 消能减震 粘弹性阻尼器 |
Seismic Energy Dissipation of Long -span Space Structures Under Multi -Support Excitation |
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| Du Dongsheng,Li Aiqun,Xu Zhaodong,Ye Jihong,Shen Shungao.Seismic Energy Dissipation of Long -span Space Structures Under Multi -Support Excitation[J].Special Structures,2005,22(2):33-35,40. |
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| Authors: | Du Dongsheng Li Aiqun Xu Zhaodong Ye Jihong Shen Shungao |
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| Abstract: | In this paper, horizontal and vertical acceleration ground motions are generated through the WAWS method, which is advanced in FFT technique. A practical project of long-span space structure equipped with viscoelastic dampers are studied under multiple support excitation and simple support excitation . The results show that the security of long-span space structure equipped with viscoelastic dampers would decrease under simple support excitation. The computed results reveal that the long-span space structures equipped with viscoelastic damper will have to take the spatial characteristics. |
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| Keywords: | Multiple support excitation Long-span space structure Seismic energy dissipation Viscoelastic damper |
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