混凝土双曲拱坝温度的控制

Temperature control for concrete hyperbolic arch dam

混凝土施工期温度控制是混凝土拱坝防裂的关键技术。藤子沟拱坝混凝土粗细骨料均为长石石英砂岩,对混凝土热学性能不利,温控防裂难度大,针对该特定情况采取了一系列温控防裂措施,有效地预防了坝体裂缝。

The temperature control of concrete in construction period is key technology for anti-cracking of concrete arch dam. The coarse aggregate and fine aggregate of the concrete used in Tengzigou arch dam are all consisted of feldspar and quartz sandstone, which is not useful for heat property of concrete, and this leads the crack control by temperature control is of great difficulty. Aiming at this special situation, a series of anti-cracking measures by temperature control was adopted, and crack of dam body was prevented effectively.