北京奥林匹克中心演播塔动力特性实测研究
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摘要
本文为了研究北京奥林匹克中心演播塔,利用脉动法对该结构进行了动力特性测试。利用谱分析方法对所采集的数据进行了分析,得出了该结构的自振频率和模态。根据实际结构,利用软件SAP2000建立了该结构的三维有限元模型,采用特征向量法,得到了该结构的自振频率和模态的理论值。测试结果与理论计算结果对比表明,结构的频率相差不到12.5%,模态相似。
In the paper,the dynamic characteristics of Beijing Olympic Center Broadcast Tower were tested by means of pulsating theory.The data were analyzed by using spectrum analysis method.Frequency and mode of structure were gained.Based on the practical structure,three dimensional finite element model was set up by SAP2000 software and its characteristics were calculated by eigenvectors method.The difference between test results and calculated results are less than 12.5 percent and the modes are similar.
In the paper,the dynamic characteristics of Beijing Olympic Center Broadcast Tower were tested by means of pulsating theory.The data were analyzed by using spectrum analysis method.Frequency and mode of structure were gained.Based on the practical structure,three dimensional finite element model was set up by SAP2000 software and its characteristics were calculated by eigenvectors method.The difference between test results and calculated results are less than 12.5 percent and the modes are similar.
引文
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[3]李国强,陈素文,李杰,等.上海金茂大厦结构动力特性测试[J].土木工程学报,2000,33(2):35-39Li Guoqiang,Chen Suwen,Li Jie,et al.Measurements of dynamic properties of Shanghai Jinmao mansion[J].China Civil Engineering Journal,2000,33(2):35-39(in Chinese)
[4]沈顺高,刘先明,叶继红,等.首都机场四机位机库的动力特性测试及理论分析[J].东南大学学报,2003,33(1):76-78Shen Shungao,Liu Xianming,Ye Jihong,et al.Test and analysis of dy-namic characteristic of hangar of capital airport[J].Journal of South-east University,2003,33(1):76-78(in Chinese)
[5]李斌,卢文胜,沈剑浩,等.高层建筑结构动力特性测试实例分析[J].结构工程师,2006,22(2):63-66Li Bin,Lu Wensheng,Shen Jianhao,et al.Analysis of Field Vibration Test for High-Rise Buildings[J].Structural Engineers,2006,22(2):63-66(in Chinese)
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