| 摘要: |
| 结合具体工程模型试验,研究了水垫塘透水底板不同开孔率对上举力的影响.结果表明:在采用透水底板这一新型消能方式减小底板上举力的情况下,不同的开孔率对水垫塘不同位置的底板上举力会产生影响,同时还分析研究了脉动压力空间积分尺度与水垫塘底板上举力的关系,并根据试验的实测数据提出了本工程上举力的预测公式.文中所阐述的透水孔开孔率对不同位置底板上举力的影响趋势,可为同类工程中透水底板的设计与施工提供一定的参考. |
| 关键词: 水垫塘 透水底板 上举力 开孔率 |
| DOI： |
| 分类号:TV135.2 |
| 基金项目:国家自然科学基金 |
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| Experimental study on hydrodynamic loads of the pervious slabs in plunge pool |
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XU Xiang,YANG Min
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(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China)
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| Abstract: |
| Based on project model experiments,analysis is made on the influence of the different pervious coefficients of the pervious holes under uplifting pressure.The results show that the uplifting pressure is reduced obviously with the pervious slabs in plunge pool.The different pervious coefficients and spatial integral scales of pulsating-pressure have different effects on different slabs.Meanwhile the relationship between the integral scale in space of the fluctuating pressure and the uplift force acting on slab is analyzed in this paper.And the prediction formula of this uplift force is proposed based on the measured data of experiments.So this study finding can give reference for the design of plunge pools. |
| Key words: plunge pool pervious slabs uplifting pressure pervious coefficient |
