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碾压混凝土坝夏季施工温控防裂问题探析

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为探求碾压混凝土坝夏季施工过程中温度控制及裂缝防治思路,以某水电站拦河坝为例,结合工程实际提出坝体施工温控重难点,应用非均质层合单元法展开仿真分析,并提出温控设计标准;最后从降低混凝土水化热,控制混凝土入仓温度以及内外温差等方面对碾压混凝土坝温控防裂措施展开分析探讨。结果表明,对水工碾压混凝土结构而言,采取综合性的温度控制措施切实可行,使大坝混凝土施工质量得到保证。
Discussion on Temperature Control and Crack Prevention during the Construction of Roller-compacted Concrete Dam in Summer
In order to investigate temperature control and crack prevention during the construction of a Roller-compacted concrete(RCC)dam in summer,a dam of a hydropower station is taken as an example.By integrating engineering practice,the key and challenging aspects of temperature control in dam construction are identified in this study.Furthermore,simulation analysis is conducted using the heterogeneous laminated element method to propose a temperature control design standard.The temperature control and crack prevention measures of RCC dam are finally analyzed and discussed,focusing on reducing the hydration heat of concrete,regulating the concrete storage temperature and managing the temperature difference between interior and exterior.The findings demonstrate the viability of implementing comprehensive temperature control measures in hydraulic RCC structures to ensure the construction quality of dam concrete.

RCC damsummerconstructiontemperature controlcrack prevention

张集林

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贵州水利实业有限公司,贵州 贵阳 550025

碾压混凝土坝 夏季 施工 温控 防裂

2024

河南水利与南水北调
河南省水利厅

河南水利与南水北调

影响因子:0.382
ISSN:1673-8853
年,卷(期):2024.53(5)
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