Field Vibration Tests of Full-Scale Tainter-Gates and Verificaiton of Its Theoretical Analysis

全尺寸Tainter门现场振动试验及其理论分析验证

• 批准号: 12650184
• 负责人: ISHII Noriaki
• 金额: $ 1.34万
• 依托单位: Osaka Electro-Communication University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650184/
• 关键词: Dynamics of Machinery; Flow-Induced-Vibration; Self-Excited Vibration; Coupled-Mode Vibration; Gate; Tainter Gate; Radial Gate; Field Vibration Tests; 流体力学

Tainter gates (radial gates) are frequently used as a crest gate of dam for a flood release. A huge Tainter gate installed on Folsom dam in Califrnia, induced vibrations and failed, early in the morning of July 17, 1995. Apossibility that vibration participated in its failure was pointed out from just after the accident, and some failure analysis studies have been performed by applicantsIn this study, field vibration tests were conducted on a 47-ton full-scale gate under practical uses, to determine its in-air and in-water natural vibration characteristics. Experimental modal tests, using an impact hammer and accelerometers, were conducted on the gate, thus addressing its in-air natural frequencies, mode shapes and modal damping. Subsequently, the in-water vibration tests were conducted to reveal the vibration characteristics of the gate. Conclusively, comparison of the calculated inherent in-water vibration frequency and the measured frequency of the in-water self-excited vibration confirms the validity of the theoretical analysis developed for full-scall gate

弧形闸门是大坝泄洪时常用的一种闸门。1995年7月17日清晨，安装在加利福尼亚州福尔松大坝上的一个巨大的泰恩特闸门因振动而失效。从事故发生后不久就指出了振动参与其破坏的可能性，并进行了一些失效分析研究。本研究对一座47 t的足尺闸门在实际使用中进行了现场振动试验，以确定其在空中和水中的自振特性。实验模态测试，使用冲击锤和加速度计，进行了大门，从而解决其在空气中的固有频率，模态振型和模态阻尼。随后，进行了水中振动试验，以揭示闸门的振动特性。计算的自振频率与实测的自振频率的比较表明，本文理论分析的正确性

项目成果

Anami, K.: "Measured and Calculated Vibration Characteristics of a Full-Scale Flap Gate Undergoing Self-Excited Vibration"Proc. of ASME Pressure Vessels and Piping Conference. 414-1. 23-29 (2000)

Anami, K.：“测量和计算的自激振动全尺寸翻板门的振动特性”Proc。

阿南景子: "流水方向に振動するせき板の水中固有振動数(理論的算定法の検証)"日本機械学会徳島地方講演会講演論文集. 005-2. 121-122 (2000)

Keiko Anan：“沿流水方向振动的堰板的水下固有频率（理论计算方法的验证）”日本机械工程师学会德岛地区会议记录 005-122（2000）。

阿南景子: "フォルソンダムゲートのせき板の回転運動によって生じる流体圧力"日本機械学会論文集B編. 66巻652号. 3116-3123 (2000)

Keiko Anan：“福尔森坝闸门堰板旋转运动产生的流体压力”，日本机械工程师学会会刊，B 版，第 66 卷，第 652 期。3116-3123（2000 年）。

Anami, K.: "Measured and Calculated Vibration Characteristics of a Full-Scale Flap Gate Undergoing Self-Excited Vibration"Proc. Of ASME Pressure Vessels and Piping Conference, Vol.414-1, pp23-29, Seattle, Washington, USA. (2000)

Anami, K.：“测量和计算的自激振动全尺寸翻板门的振动特性”Proc。

Noriaki ISHII: "Field Tests for Non-Eccentricity Dynamic Instability Closely Related to Folsom Dam Tainter-Gate Failure"Proc.of ASME Symposium on Flow-Induced Vibration. (発表予定). (2001)

Noriaki ISHII：“与 Folsom 大坝 Tainter-Gate 故障密切相关的非偏心动态不稳定性现场测试”Proc.of ASME 流激振动研讨会（即将发表）。