Investigation and verification of the relationship between the average temperature of the circular section of the cooling water pipe and the maximum temperature of the section in the mass concrete

Abstract

In the construction of mass concrete structures, temperature control measures such as laying cooling water pipes are often applied. The equivalent cooling algorithm used in the simulation calculation has no obvious spatial gradient in the simulated temperature field. The maximum temperature control index cannot be directly used for pouring blocks for water pipe cooling. Therefore, this article mainly explores and verifies the quantitative relationship between the average temperature of the circular section of the cooling water pipe in the mass concrete and the maximum temperature of the section. According to some existing bottom plate data, the average temperature of the circular cross-section of the cooling water pipe is obtained by numerical integration. The highest temperature of the cross-section is divided by the average temperature, and the deviation coefficient is between 1.08-1.16, with an average of 1.12. In the construction of a flow passage structure, the measured average temperature considering the deviation coefficient is mostly lower than the temperature control index of flow passage, and there is not much difference between the two, which to some extent compensates for the uniform temperature field gradient of the equivalent cooling algorithm. Engineering practice has proved that the deviation coefficient has certain application values for the temperature control and crack prevention of mass concrete structures.