| 高强度混凝土渡槽夏季施工防裂措施研究 |
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| 引用本文： | 张杨,邬爱清,何磊. 高强度混凝土渡槽夏季施工防裂措施研究[J]. 长江科学院院报, 2011, 28(9): 48-52 |
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| 作者姓名： | 张杨 邬爱清 何磊 |
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| 作者单位： | 1. 扬州大学 水利科学与工程学院，江苏 扬州 225009 ； 2. 长江科学院 水利部岩土力学与工程重点实验室，武汉 430010 ； 3. 西南电力设计院，成都 610021 |
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| 摘 要： | 高强度混凝土渡槽结构承载能力高,但水化放热量也大,在夏季浇筑时混凝土温控防裂难度较大.采用非稳定温度场及应力场的有限元计算方法,对夏季施工的典型渡槽结构进行了施工过程的仿真计算.根据不同工况的温度场和应力场计算结果,分析了易裂部位的开裂原因,提出了相应的水管冷却和表面保温措施,可为类似高强度混凝土结构的设计和施工提供有...
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| 关 键 词： | 渡槽 高强度混凝土 温控防裂 有限元 |
Crack Prevention Measures for High Strength Concrete Aqueduct Constructed in Summer |
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| ZHANG Yang,WU Ai-qing,HE Lei. Crack Prevention Measures for High Strength Concrete Aqueduct Constructed in Summer[J]. Journal of Yangtze River Scientific Research Institute, 2011, 28(9): 48-52 |
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| Authors: | ZHANG Yang WU Ai-qing HE Lei |
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| Affiliation: | 1. School of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China; 2. Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China; 3. Southwest Electric Power Design Institute, Chengdu 610021, China |
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| Abstract: | In spite of high carrying capacity,it involves great difficulty to control the temperature and prevent cracking during the construction of high strength concrete aqueduct in summer because of high heat of hydration.The finite element method for unsteady temperature field and stress field is applied to simulate the construction process in summer for a typical aqueduct structure.The cause of cracking at dangerous positions is analyzed based on the calculation results of temperature field and stress field in d... |
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| Keywords: | aqueduct high strength concrete temperature control and crack prevention finite element method |
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