某高层建筑结构动力测试与抗震性能分析
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摘要
通过测试高层建筑结构在自然环境激励下的动态响应信号,进行动力参数识别,可以验证理论计算结果的准确性,为建筑结构安全评估及损伤识别提供依据,为结构抗震计算和设计提供重要指标。针对某办公楼首先采用脉动法进行动力测试,获得了其固有频率和振型。最后,运用有限元方法对该结构进行模态分析和抗震计算,结果表明:实测动力特性结果与计算结果符合较好,结构抗震承载力满足要求,利用该检测方法可以较好的把握结构的整体性能。
Through testing the dynamic response signals of high-rise buildings under the excitation of the natural environment vibration,the dynamic behaviors is identified,the accuracy of theoretical calculation results can be verified,which provide basis for structural damage detection and assessment of the safety and key indicators for the seismic analyses of structures and design.Firstly,the vibration tests of an office building with pulsating method are completed for getting the natural frequencies and modes.Then,the modal analysis and seismic calculation of the building by using the finite element method are accomplished.The results show that the testing results agree well with theoretical analysis,and the structure has a good capacity to meet earthquake fortification,therefore,the detect method can get a better overall structural performance.
Through testing the dynamic response signals of high-rise buildings under the excitation of the natural environment vibration,the dynamic behaviors is identified,the accuracy of theoretical calculation results can be verified,which provide basis for structural damage detection and assessment of the safety and key indicators for the seismic analyses of structures and design.Firstly,the vibration tests of an office building with pulsating method are completed for getting the natural frequencies and modes.Then,the modal analysis and seismic calculation of the building by using the finite element method are accomplished.The results show that the testing results agree well with theoretical analysis,and the structure has a good capacity to meet earthquake fortification,therefore,the detect method can get a better overall structural performance.
引文
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[2]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):63-67.Li Bin,Lu Wensheng,Shen Jianhao,et al.Analysis of field vibration test for high-rise buildings[J].Structural Engineers,2006,22(2):63-67.
[3]徐亚丰,白首晏.建筑房屋动力特性的测试与分析[J].西部探矿工程,2003,11(1):151-152.Xu Yafeng,Bai Shouyan.Measurement and analysis of the dynamic behavior of building by pulsation Method[J].West Exploration Engineering,2003,11(1):151-152.
[4]汪文波,罗时重,刘俊杰,等.利用环境激励下的模态识别理论测试房屋结构的可靠性[J].国外建材科技,2005,26(3):116-118.Wang Wenbo,Luo Shijie,LiuJunjie,et al.Testing the reliability of housing structures by using modal identification theory under the environmentexcitation[J].Science and Technology of Overseas Building Materials,2005,26(3):116-118.
[5]陈敏思,史文海,阮长锋.温州市高层建筑动力特性的脉动测试研究[J].中国水运,2008,8(4):89-91.Chen Minsi,Shi Wemhai,Ruan Changfeng.Study of dynamic characteristics of Wenzhou high buildings by pulse testing[J].China Water Trans-port,2008,8(4):89-91.
[6]李正农,刘福义,李秋胜,等.高层建筑动力反应实测中测点的优化布置方法的研究[J].地震工程与工程振动,2003,23(5):149-156.Li Zhengnong,Liu Fuyi,Li Qiusheng,et al.Optimal sensor locations for measurements of dynamic responses of tall buildings[J].Journal ofEarthquake Engineering and Engineering Vibration,2003,23(5):149-156.
[7]李杰.高层建筑结构质量动力评定研究[J].地震工程与工程振动,2001,21(4):125-132.Li Jie.Research on dynamic assessment technique of tall building construction quality[J].Journal of Earthquake Engineering and Engineering Vi-bration,2001,21(4):125-132.
[8]李星新,贺国京,黄智慧,等.建筑结构振动安全性研究[J].世界地震工程,2007,23(4):234-238.Li Xingxin,Huo Guojing,Huang Zhihui,et al.Research on vibration safety of auxiliary plant[J].World Earthquake Engineering,2007,23(4):234-238.
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