【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。更多还原

【Abstract】 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.更多还原