坝体碾压混凝土温度场监测与分析

通过分析某大坝坝体碾压混凝土温度监测原始资料,研究碾压混凝土温度分区变化过程和内部混凝土温度变化规律;绘制坝体碾压混凝土温度场,发现下游侧等温线与下游坝面平行,上游侧水下部分等温线与坝面相交。等温线在坝面附近密,在坝体内部稀,说明温度梯度在坝面附近大,在坝体内部小。坝体碾压混凝土夏季温度场有一个高温核与两个低温核,而冬季温度场只有一个高温核,表明夏季温度场比较复杂。

Temperature field measurement and analysis of the roller compected concrete dam

By analyzing the raw monitoring data of temperature of a RCC dam,this paper researches the changing process of the roller comoected concrete temperature and internal concrete partitions temperature variation of dams.It also draws the temperature field of the dam concrete.The results show that the isothermals of downstream side parallel with the surface of the downstream dam,and the isothermals of upstream side intersect with the dam.Isothermals which are near to the dam’s surface are close.This suggests that temperature gradient there is large.There is a high temperature nucleus and two low temperature nucleuses in the temperature field of the dam in summer,while in winter there is only one high temperature nucleus.So it suggests that the temperature field in summer is more complex.