| SMA-MR阻尼器在大跨度挑篷结构中的减振控制研究 |
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| 引用本文： | 薛素铎,卞晓芳.SMA-MR阻尼器在大跨度挑篷结构中的减振控制研究[J].空间结构,2005,11(2):19-26. |
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| 作者姓名： | 薛素铎 卞晓芳 |
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| 作者单位： | 北京工业大学建筑工程学院,北京,100022;北京工业大学建筑工程学院,北京,100022;中冶集团建筑研究总院,北京,100088 |
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| 基金项目： | 国家自然科学基金资助项目(50178006)，北京市自然科学基金资助项目(8042008). |
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| 摘 要： | 将作提出的SMA-MR复合型阻尼器应用到大跨度挑篷结构的减振控制中，建立了挑篷结构的理论模型，编制了减振控制分析程序．通过输入三向El-Centro地震波，分别研究了阻尼器在地震加速度峰值为0．2g、0．4g和1．0g情况下的减振性能，结果表明，阻尼器对挑篷结构的节点位移和杆件轴力都有很好的控制效果．然后系统进行了SMA-MR复合型阻尼器在挑篷结构中的减振控制参数研究，通过对比分析，给出了实用性的工程建议。
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| 关 键 词： | 形状记忆合金(SMA) 磁流变(MR) 阻尼器 大跨度挑篷 振动控制 |
| 文章编号： | 1006-6578(2005)02-0019-08 |
| 修稿时间： | 2004年10月10 |
Vibration control in long-span canopy roof structures using composite SMA-MR damper |
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| XUE Su-duo,BIAN Xiao-fang.Vibration control in long-span canopy roof structures using composite SMA-MR damper[J].Spatial Structures,2005,11(2):19-26. |
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| Authors: | XUE Su-duo BIAN Xiao-fang |
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| Affiliation: | XUE Su-duo~1,BIAN Xiao-fang~ |
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| Abstract: | The designed SMA-MR damper is applied to long-span canopy roof structures to investigate its vibration control performance. Theoretical model of the system is set up and a computer program for vibration control is developed. Then, the control performance is analyzed with inputting three-dimensional El-Centro earthquake waves in different seismic intensity. It is shown that SMA-MR damper is very effective to mitigate earthquake responses of long span roofs. Then parametric studies for control performance of the SMA-MR damper in long-span canopy roof structures is carried out. By analysis, practical engineering suggestions are presented. |
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| Keywords: | shape memory alloy(SMA) Magnetorheological(MR) damper long-span canopy roof structures vibration control |
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