Arch Dam System Identification Using Vibration Test Results

使用振动测试结果识别拱坝系统

• 批准号: 8520599
• 负责人: Sheng-Taur Mau
• 金额: $ 6.21万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-03-01 至 1988-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8520599&HistoricalAwards=false
• 关键词: Arch; Dam; System; Identification; Using

In this project, a systematic method for parameter identification for an assumed system is developed. The method utilizes both the more general non-classical modes of vibration and the more restrictive classical modes of vibration and includes the effect of modal interference. Such a method would provide the most general interpretation of vibration test results and would enable engineers to gain insight into the complex behavior of an arch dam system. The method is applied to the recent test results of the three existing arch dams. The accuracy of the classical mode formulation and the importance of the non-classical modes is critically assessed. An effort is also made to develop a method of establishing a non-proportional damping matrix from the modal parameters. Recommendations are made on vibration test procedures that would yield more information on the behavior of arch dams than current procedures.

本课题提出了一种系统的参数识别方法， 开发了一个假定的系统。 该方法利用了两个更多的 一般的非经典振动模式和更严格的 经典的振动模式，包括模态的影响 干扰 这种方法将提供最一般的 解释振动测试结果，并使工程师能够 深入了解拱坝系统的复杂行为。 的 并将该方法应用于三个既有拱的近期测试结果 水坝 经典模式公式的准确性和 非经典模式的重要性是严格评估。 一个 还努力开发一种建立 非比例阻尼矩阵的模态参数。 对振动试验程序提出了建议， 比现行程序提供更多关于拱坝性能的信息。