Temperature-control cooling system for large-size concrete structure and cooling control method of temperature-control cooling system

Abstract

The invention provides a temperature-control cooling system for a large-size concrete structure and a cooling control method of the temperature-control cooling system, and relates to the technical field of large-size concrete construction by aiming at the problems that in the existing method, the arrangement blindness of cooling pipes is great, the inside temperature distribution rule of the concrete cannot be well combined, and the inside temperature reduction uniformity of the cooling pipes cannot be effectively controlled. Cooling water pipe units are horizontally arranged in a template, and comprise two cooling water pipe groups, the two cooling water pipe groups are staggered and overlapped, the cooling water pipes of the two cooling water pipe groups are parallel and are separately arranged, and the flowing directions of cooling circulation water in the adjacent cooling water pipes are opposite. The method comprises the following steps that 1, a finite element model is created, and in addition, the water thermalization analysis is carried out for judging the highest temperature difference and the temperature gradient; 2, the arrangement scheme of the cooling water pipe units is primarily determined; 3, the information of the arrangement scheme is substituted into the finite element model for analogue simulation, when the judging result is assertive, the construction is carried out according to the arrangement scheme, and when the judging result is negative, the arrangement and the flow rate of the cooling water pipe units are regulated until the requirements are met.

Description

technical field [0001] The invention relates to the technical field of large-volume concrete construction, in particular to a temperature-controlled cooling system for a large-volume concrete structure and a cooling control method thereof. Background technique [0002] With the increasing scale of urban buildings, the application of mass concrete construction technology is becoming more and more common. During the construction of mass concrete structures, the hydration reaction of cement will generate a large amount of heat of hydration. Considering the particularity of the concrete itself, an uneven temperature field will be generated inside the concrete, and the external cold concrete will be affected by the internal hot concrete. The expansion and contraction constraints of the large-volume concrete, resulting in temperature stress, lead to temperature cracks in the mass concrete during the hardening process, which reduces the bearing capacity, waterproof performance and ...

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Problems solved by technology

[0004] Aiming at the problem that the cooling control method of the existing large-volume concrete structure has a large amount of calculation, the layout of the cooling water pipes is blind, and cannot be well combined with the internal temperature distribution of the concrete; the cooling water pipes cannot effectively control the uniformity of internal cooling. The purpose of the present invention is to provide A temperature-controlled cooling system and cooling control method for a large-volume concrete structure, which can effectively control the phenomenon of uneven cooling inside the concrete caused by the single flow direction of circulating cooling water in the cooling water pipe, so as to reduce the temperature gradient and change the uneven temperature field The purpose; through the finite element model simulation calculation and analysis of the temperature control effect of the cooling water pipe, to reduce the internal temperature difference of the mass concrete structure and achieve the purpose of effective and uniform temperature control

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