斜拉索基频识别的改进方法
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摘要
斜拉桥拉索的基频在索力测试、拉索减振、实时控制等方面起着重要作用。文中分析了功率谱频差法和基频法在测试拉索基频中的不足之处,提出了一种改进的新基频法。应用本文的方法,对哈尔滨松花江斜拉桥斜拉索的环境振动下的实测加速度信号进行了分析处理,证明了其有效性和可行性。
Natural frequencies of a cable for a cable-stayed bridge play an important role in measuring cable tension forces, controlling the bridge vibration and mitigating cable vibration. This paper analyzes the deficiency of the frequency spectrum method and fundamental frequency method .A processing fundamental frequency analysis for determining the fundamental frequency of stay cables is proposed. Application of the automated analysis approach to the cables of the Songhua River, from ambient vibration measurements, shows that the presented method is effective and applicable.
Natural frequencies of a cable for a cable-stayed bridge play an important role in measuring cable tension forces, controlling the bridge vibration and mitigating cable vibration. This paper analyzes the deficiency of the frequency spectrum method and fundamental frequency method .A processing fundamental frequency analysis for determining the fundamental frequency of stay cables is proposed. Application of the automated analysis approach to the cables of the Songhua River, from ambient vibration measurements, shows that the presented method is effective and applicable.
引文
[1]姚文斌,何天淳,王峰·斜拉桥拉索索力测定的新方法[J]·仪器仪表学报,2001,22(3):90-91·
[2]乔陶鹏,严普强,邓焱,傅琦,周佳·斜拉索索力估算中振动信号处理方法的改进[J]·清华大学学报,2003,43(5):644-647·
[3]陈刚,任新伟·基于环境振动的斜拉桥拉索基频识别[J]·地震工程与工程振动,2003,23(3):100-106.
[4]吴海军,陈思甜,龚尚龙,许羿,施尚伟·斜拉桥索力测试方法研究[J]·重庆交通学院学报,2001,20(4):23-25.
[2]乔陶鹏,严普强,邓焱,傅琦,周佳·斜拉索索力估算中振动信号处理方法的改进[J]·清华大学学报,2003,43(5):644-647·
[3]陈刚,任新伟·基于环境振动的斜拉桥拉索基频识别[J]·地震工程与工程振动,2003,23(3):100-106.
[4]吴海军,陈思甜,龚尚龙,许羿,施尚伟·斜拉桥索力测试方法研究[J]·重庆交通学院学报,2001,20(4):23-25.
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