| 三峡升船机上闸首的自振特性分析 |
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| 引用本文： | 张燎军,傅作新,钮新强.三峡升船机上闸首的自振特性分析[J].河海大学学报(自然科学版),2000,28(5):34-37. |
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| 作者姓名： | 张燎军 傅作新 钮新强 |
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| 作者单位： | 1. 河海大学水利水电工程学院,江苏,南京,210098
2. 长江水利委员会,湖北,武汉,430010 |
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| 摘 要： | 导出三峡升船机上闸首闸墙、航槽和工作门上动水压力附加质量的统一算式,利用直接滤频法分别求解上闸首顺河向和横河向的自振特性,并对上闸首在空库和满库时的自振特性进行比较分析。分析结果表明：上闸首结构振动时,起决定作用的是第１阶振型;水体在动力压力作用下结构的自振频率将有所降低。
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| 关 键 词： | 升船机 闸首 自振特性 动水压力 三峡工程 |
| 修稿时间： | 19990425 |
Free Vibration Characteristics Analysis of the Head-Bay of the Three Gorges Ship Lift |
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| ZHANG Liao jun ,FU Zuo xin ,NIU Xin qiang.Free Vibration Characteristics Analysis of the Head-Bay of the Three Gorges Ship Lift[J].Journal of Hohai University (Natural Sciences ),2000,28(5):34-37. |
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| Authors: | ZHANG Liao jun FU Zuo xin NIU Xin qiang |
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| Institution: | ZHANG Liao jun 1,FU Zuo xin 1,NIU Xin qiang 2 |
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| Abstract: | A unified formula of the attached mass of dynamic water pressure on the lock walls and the gates of the head bay of the Three Gorges Ship Lift is derived. By means of Direct Filter Frequency Method, the free vibration characteristic of the head bay under concurrent and cross current is calculated. And the characteristics of the head bay under idle pool and full pool are compared and analysed. Results show that the dominant mode is the first one in the head bay vibration. The results provide a scientific basis for the earthquake resistant design of head bays. |
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| Keywords: | Three Gorges ship lift head bay direct filter frequency method dynamic water pressure attached mass |
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