| 塔桅结构动力性能试验研究与计算分析 |
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| 引用本文： | 鲁书浓,赵星蔚,朱金龙.塔桅结构动力性能试验研究与计算分析[J].河南科学,2009,27(10):1251-1253. |
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| 作者姓名： | 鲁书浓 赵星蔚 朱金龙 |
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| 作者单位： | 同济大学航空航天与力学学院,上海,200092 |
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| 摘 要： | 塔桅结构是一种高耸结构,被广泛运用于广播电视塔、输电塔及通信塔等领域.在风荷载、地震荷载等动力荷载作用下,塔桅结构容易遭到破坏,因此十分有必要开展塔桅结构的动力性能研究.设计制作了塔桅结构的试验模型,并进行了动力性能测试.在此基础上利用有限单元法对塔桅结构进行了模态分析,得到了塔桅结构的前三阶固有频率,再将两者结果与根据瑞利能量法求得的解析解进行比较,得到以下结论：3种方法测得的前三阶自振频率数值较为吻合,尤其是第一阶频率吻合得最好,说明试验模型较为合理.
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| 关 键 词： | 塔桅结构 模态分析 有限单元法 瑞利能量法 |
Experimental Study and Calculating Analysis on Dynamic Performance of Tower Mast Structure |
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| Lu Shunong,Zhao Xingwei,Zhu Jinlong.Experimental Study and Calculating Analysis on Dynamic Performance of Tower Mast Structure[J].Henan Science,2009,27(10):1251-1253. |
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| Authors: | Lu Shunong Zhao Xingwei Zhu Jinlong |
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| Institution: | (School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China) |
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| Abstract: | Tower mast structure is a sort of high-rise structure,which is mostly used in fields of broadcast tv tower,transmission tower and communication tower.Under the dynamic loads of wind load and seismic load,tower mast structure may be easily destroyed.So it is very important to develop the dynamic performance research of tower mast structure.This paper introduced the design of experimental model and test of dynamic performance.This paper also analyzed the first three natural vibration frequency of tower mast structure by means of FEM.The both results of experiment and FEM were compared with the analytical solutions.This work provides that the first three natural vibration frequency is very close and the experimental model is reasonable. |
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| Keywords: | tower mast structure modal analysis FEM Rayleigh energy method |
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