| 水轮机流道压力脉动诱发厂房振动分析 |
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| 引用本文： | 郭涛,张立翔,姚激.水轮机流道压力脉动诱发厂房振动分析[J].地震工程与工程振动,2011,31(6):136-140. |
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| 作者姓名： | 郭涛 张立翔 姚激 |
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| 作者单位： | 昆明理工大学建筑工程学院,云南昆明,650500 |
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| 基金项目： | 国家自然科学基金重点项目，云南省自然科学基金项目 |
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| 摘 要： | 水轮机压力脉动是引起厂房内源振动的主要诱因,如何在振动系统中合理、准确地施加水力荷载的振源特性,是目前机组振动分析的主要难点.文中将压力脉动假定为简谐荷载,通过跟踪楼板的振动变化和共振校核确定机组的振源特性,采用有限元法精细模拟了水轮机流道压力脉动诱发的厂房振动问题,并结合电站特点提出振动控制标准的建议值,由此对振动进...
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| 关 键 词： | 地下厂房 振动 压力脉动 共振 |
Vibration analysis of powerhouse induced by pulsation pressure of hydro-turbine |
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| GUO Tao,ZHANG Lixiang,YAO Ji.Vibration analysis of powerhouse induced by pulsation pressure of hydro-turbine[J].Earthquake Engineering and Engineering Vibration,2011,31(6):136-140. |
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| Authors: | GUO Tao ZHANG Lixiang YAO Ji |
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| Institution: | (Department of Engineering Mechanics,Kunming University of Science and Technology,Kunming 650500,China) |
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| Abstract: | The turbine’s pulsation pressure is the main vibration source that induces the serious vibration of powerhouse structure.The method of applying the hydraulic loading in vibration system reasonably and accurately is the main difficulty of vibration analysis.Based on the background of Nuozhadu hydropower project,we use the harmonic method to study the vibration response of powerhouse structure induced by pulsation pressure.The result shows that the vibration reason of Nuozhadu powerhouse is the intermediate frequency of hydraulic loading,which is easy to cause the resonance of floor.The method gives us a guidance on dynamic simulation of hydropower house under the action of internal dynamic loadings. |
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| Keywords: | underground powerhouse vibration pressure pulsation resonance |
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