| 高碾压混凝土坝取消骨料预冷可行性研究 |
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| 引用本文： | 程井,李同春,陈祖荣,刘晓青.高碾压混凝土坝取消骨料预冷可行性研究[J].三峡大学学报(自然科学版),2012,34(6):1-5. |
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| 作者姓名： | 程井 李同春 陈祖荣 刘晓青 |
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| 作者单位： | 1. 河海大学水利水电学院,南京,210098
2. 中国水利水电第十六工程局有限公司,福州,350003 |
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| 基金项目： | 国家自然科学基金青年基金项目，教育部博士点新教师基金，南京市留学回国人员科技活动资助项目 |
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| 摘 要： | 高碾压混凝土坝一般采用大仓面薄层碾压，高温期预冷混凝土运输过程中冷量损失大、仓面摊铺及碾压过程中温度倒灌严重，骨料预冷效率低．提出在合理通水的前提下取消高碾压混凝土坝骨料预冷的温控理念；结合沙沱工程，从温控技术可行性及数值计算结果两方面分析论证了高碾压混凝土坝取消骨料预冷的可行性，并对取消骨料预冷条件下的温控措施提出几点建议．
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| 关 键 词： | 水工结构 碾压混凝土坝 温控防裂 取消骨料预冷 通水冷却 |
Feasibility Study of Abolishing Aggregate Precooling for High RCC Dams |
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| Cheng Jing
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Li Tongchun
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Chen Zurong
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Liu Xiaoqing.Feasibility Study of Abolishing Aggregate Precooling for High RCC Dams[J].Journal of China Three Gorges University(Natural Sciences),2012,34(6):1-5. |
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| Authors: | Cheng Jing Li Tongchun Chen Zurong Liu Xiaoqing |
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| Institution: | 1(1.College of Water Conservancy and Hydropower Eng.,Hohai Univ.,Nanjing 210098,China;2.Hydro China 16th Engineering Burea Co.,Ltd.,Fuzhou 350003,China) |
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| Abstract: | Generally the high roller compacted concrete （RCC） dams are constructed in large decks and thin layers~ the temperature of precooled aggregates will rise significantly on the process of transport, paving and rolling. Thus the abolition of aggregate precooling is brought forward, under the premise of reasonable pipe- cooling. Based on Shatuo high RCC gravity darn, the feasibility demonstration of the abolition is carried out, in terms of the development trends of temperature control technology and the simulated results. And then several key points are given for the abolition of aggregate precooling. |
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| Keywords: | hydraulic structures RCC dam temperature control and crack prevention abolition of ag-gregate precooling water-pipe cooling |
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