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防止混凝土坝施工期间的温度裂缝,研究其温度控制时,常需要计算坝体浇筑块的温度。但在浇筑块中,无论是基岩上的浇筑块,或老混凝土上的浇筑块,由于其块厚与块宽、块长比较,相对来说较薄,所以通常把它视为半无限体(或视为嵌坚板)的散热与传热,即通过顶面散热与底部传热。作这样的处理,是为了解算上的简化,同时解算结果精度,也基本上能满足实际需要。
To prevent temperature cracks during the construction of a concrete dam and to study its temperature control, it is often necessary to calculate the temperature of the dam’s pouring block. However, in the pouring block, whether it is the pouring block on the bedrock, or the pouring block on the old concrete, because the block thickness is relatively thin compared with the block width and the block length, it is usually regarded as a semi-infinite body ( Or it is considered to be embedded in the heat dissipation and heat transfer of the board, that is, heat dissipation through the top surface and heat transfer at the bottom. To do this kind of processing is to understand the simplification of the calculation, and at the same time to solve the accuracy of the results, it can basically meet the actual needs.