大体积混凝土在大坝施工中的温控与防裂技术研究  

Temperature Control and Crack Prevention Technology for Mass Concrete in Dam Construction

作　　者：杨修 YANG Xiu(Xinjiang Shuifa Construction Group Co.,Ltd.,Urumqi 830000,China)

机构地区：[1]新疆水发建设集团有限公司,新疆乌鲁木齐830000

出　　处：《中国水能及电气化》2025年第2期19-23,28,共6页China Water Power & Electrification

摘　　要：文章针对布尔津水利枢纽工程的大体积混凝土温控与防裂技术展开研究,提出了一套系统性的温控与防裂方案,适用于复杂地质和气候条件下的水利枢纽工程。通过合理控制入仓温度,降低了温差应力对关键区域的影响,为类似工程提供了温度控制参考标准;冷却水管系统实现了均匀散热及实时动态调控,确保了温度维持在安全范围内。对3~5cm厚度的聚乙烯泡沫板进行了表面保温优化计算,有效缓解了表面温度梯度,提升了抗裂性能。最终通过分层分段浇筑和变形缝设计,实现了温控、防裂与结构稳定性的综合提升。研究成果为复杂环境下的大体积混凝土温控和防裂技术提供了科学依据与工程实践参考。This paper focuses on the temperature control and crack prevention technology for mass concrete in the Buerjin Water Conservancy Project,proposing a systematic approach for temperature management and crack prevention suited to water conservancy projects in complex geological and climatic conditions.By optimally controlling the placement temperature,temperature differential stress effects on critical areas were minimized,offering a reference standard for similar projects.The cooling pipe system achieved uniform heat dissipation and real-time dynamic control,ensuring that temperatures remained within a safe range.Additionally,insulation calculations for 3~5cm thick polyethylene foam boards effectively mitigated surface temperature gradients,enhancing crack resistance.Ultimately,layered and segmented pouring combined with deformation joints enabled comprehensive improvements in temperature control,crack prevention,and structural stability.These findings provide scientific support and practical guidance for temperature management and crack prevention in mass concrete under complex conditions.

关 键 词：大体积混凝土 碾压混凝土 大坝施工 温控措施 防裂技术 

分 类 号：TV431[水利工程—水工结构工程]