| 大型水电站分层取水叠梁门的脉动压力特性 |
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| 引用本文： | 宋慧芳,高学平,张磊.大型水电站分层取水叠梁门的脉动压力特性[J].天津大学学报(自然科学与工程技术版),2011,44(1). |
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| 作者姓名： | 宋慧芳 高学平 张磊 |
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| 作者单位： | 天津大学建筑工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50879054); 教育部高等学校博士学科点基金资助项目(200800560042); 云南省科技计划资助项目(2006GG19) |
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| 摘 要： | 为减少下泄低温水对下游生态环境的影响,某水电站进水口拟采取叠梁门分层取水方式.由于过流方式不同,叠梁门与普通平板闸门在荷载特性上存在明显差别.通过模型试验对进水口叠梁门的脉动压力进行测量,结合数值模拟结果,分析了叠梁门上脉动压力的分布规律及荷载特性.结果表明:在所有工况下,作用在叠梁门不同部位的脉动压力特性不同,但均在叠梁门下游侧底部出现了较大的脉动压力;叠梁门下游侧底部大漩涡产生的脉动压力是诱发叠梁门流激振动的主要激振力.提出了一种针对叠梁门顶部过流计算激振力的简易方法,可供工程设计参考使用.
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| 关 键 词： | 分层取水 叠梁门 脉动压力 模型试验 数值模拟 |
Fluctuating Pressures Characteristics of Stoplogs Gate of Multi-Level Intake for Large Hydroelectric Station |
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| SONG Hui-fang,GAO Xue-ping,ZHANG Lei.Fluctuating Pressures Characteristics of Stoplogs Gate of Multi-Level Intake for Large Hydroelectric Station[J].Journal of Tianjin University(Science and Technology),2011,44(1). |
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| Authors: | SONG Hui-fang GAO Xue-ping ZHANG Lei |
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| Institution: | SONG Hui-fang,GAO Xue-ping,ZHANG Lei(School of Civil Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Multi-level intake structure is applied by installing stoplogs gate in a certain hydroelectric station to reduce the effect of released cold water on downstream living creatures especially fish.Because of the different flow patterns,the load characteristics of stoplogs gate are significantly different from those of the ordinary plate gate.Through hydraulic model tests,the fluctuating pressures on the stoplogs gate were measured,and distribution law and characteristics of the fluctuating pressures were analy... |
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| Keywords: | multi-level intake stoplogs gate fluctuating pressure model test numerical simulation |
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