基于随机减量技术的混凝土结构模态参数识别
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
本文针对时域方法只需实测响应信号的特点,对基于环境激励下模态参数识别的时域方法ITD法、随机减量技术进行详细讨论,并针对两种算法的特点,将其结合形成随机减量技术/ITD时域联合算法,使之有效识别环境激励下结构模态参数,并建立混凝土连续梁结构数值模型进行仿真模拟,验证了算法的可行性,为工程实践提供了有益的帮助.
On account of the feature that time-domain method only need actual response signals,the ITD and random decrement technique based on ambient excitation are discussed.Two methods are combined to become a kind of time-domain joint algorithm for structural modal parameter identification effectively.The numerical simulations of a concrete continuous beam are carried out to verify the feasibility of time-domain joint algorithm.The study has important theoretical significance and practical engineering value.
引文
[1]程永春,谭国金,刘寒冰,刘福寿.车辆作用下的公路简支梁桥测试频率[J].吉林大学学报(工学版),2009,39(6):1492-1496.
    [2]Dionysius M,Siringoringo,Yozo Fujino.System identification of suspension bridge from ambient vibration response[J].Engineering Structures,2008,30(2):462-477.
    [3]侯立群,欧进萍.基于时频分析的运营桥梁模态参数识别方法[J].振动工程学报,2009,22(1):19-25.
    [4]廖庆斌.基于随机激励的某机匣模态实验与分析[J].航空动力学报,2005,20(6):932-936.
    [5]淡丹辉,孙利民.在线监测环境下土木结构的模态识别研究[J].地震工程与工程振动,2004,24(3):82-88.
    [6]顾培英,邓昌,吴福生.结构模态分析及其损伤识别[M].南京:东南大学出版社,2008:146-148.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心