A method for internal cooling of mass concrete foundation

Abstract

The invention discloses a method for internal cooling of a large-volume concrete foundation. The steps include: erecting a steel pipe support frame of a main body according to d×d, and arranging horizontal bars of each layer at intervals; and encrypting the short-direction arrangement of the horizontal bars of the middle-layer steel mesh , so that the distance between the horizontal rods is d / 2; the horizontal rods are used as circulating water pipes, and the two ends of the horizontal rods protrude from the foundation for a certain distance, and the outer ends of the horizontal rods are connected, and the circulating water pipes of each layer are connected in turn; all The circulating water pipe in the upper layer is set to enter the upper layer and the lower layer to discharge water to form an overall circulation loop to achieve overall cooling; when the local temperature inside the foundation is too high, the external end of the horizontal rod at this position is connected and removed, and the end of the water inlet and outlet pipes is formed. , so that the location forms a local circulation loop to achieve local cooling. The method combines and utilizes the circulating water pipe of the mass concrete foundation and the steel support steel pipe, and has the advantages of high efficiency, good controllability, easy operation, material saving, labor cost saving and the like.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a method for cooling the interior of a large-volume concrete foundation. Background technique [0002] Mass concrete refers to the mass concrete whose minimum geometric dimension of the concrete structure is not less than 1m, or the concrete that is expected to cause harmful cracks due to temperature changes and shrinkage caused by the hydration of the cementitious material in the concrete, such as high-rise buildings foundation, large equipment foundation, water conservancy dam, etc. The main feature of mass concrete is its large volume and relatively small surface coefficient. The release of cement hydration heat is relatively concentrated, resulting in a relatively rapid internal temperature rise. When the temperature difference between the inside and outside of the concrete is large, it will cause temperature cracks in the concrete, which will affect the saf...

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Problems solved by technology

[0004] In order to solve the above problems, the present invention proposes a method for internal cooling of mass concrete foundations, which combines the circulating water pipes of mass concrete foundations with the steel pipes supported by the foundation steel bars, and solves the problems of long operating periods, waste of materials and problems of existing cooling methods. Prone to the problem of uneven cooling

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