| 封闭环形连续钢箱梁人行天桥不同减振方法的研究 |
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| 引用本文： | 安瑞晶.封闭环形连续钢箱梁人行天桥不同减振方法的研究[J].贵州大学学报(自然科学版),2011,28(2):133-136. |
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| 作者姓名： | 安瑞晶 |
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| 作者单位： | 北京公科固桥技术有限公司,北京,100088 |
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| 摘 要： | 针对某钢箱连续人行天桥特殊的结构形式及振动特性,建立空间有限元模型,以跨中竖向位移及加速度减振率为标准,通过理论计算比较TMD减振效果与频率调整法减振效果,结果表明对于该桥频率调整法减振效果远远优于TMD减振效果,可见TMD减振系统并不是适用于所有结构,所得结论可供同类桥型减振设计参考使用.
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| 关 键 词： | 人行天桥 TMD减振 调整频率 边界约束 空间有限元 |
Study on Different Methods of Easing Vibration for for Ring Continuous Steel Box Beam Footbridge |
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| AN Rui-jing.Study on Different Methods of Easing Vibration for for Ring Continuous Steel Box Beam Footbridge[J].Journal of Guizhou University(Natural Science),2011,28(2):133-136. |
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| Authors: | AN Rui-jing |
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| Institution: | AN Rui-jing(Beijing Gongke Bridge Technology Co.,Ltd,beijng,100088) |
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| Abstract: | According to the special structure and vibration characteristics of the steel box beam continuous footbridge,space finite element calculation models are proposed respectively.The different effect of tured mass dampe and adjusting frequency of struction on easing vibration was studied by contrasting the vertical displacement at span midpoint and reducing ratio of acceleration.The calculation shows that the way of adjusting frequency is greatly better than tured mass dampe to ease vibration for this bridge,so tured mass dampe doesn’t fit for all kind of structures.The results may give instruction to the vibration resistance design of the same bridge type. |
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| Keywords: | footbridge tured mass dampe easing vibration adjusting frequency boundary restriction space finite element |
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