Method for arranging large-size concrete cooling water pipe

A technology of large-volume concrete and cooling water pipes, which is applied in basic structural engineering, architecture, building construction, etc., can solve the problems of not effectively reducing the temperature difference inside the concrete, not taking into account the temperature distribution, and adverse temperature stress. Pipeline maintenance burden, effect of preventing and restricting crack propagation, preventing concrete cracks

Active Publication Date: 2011-06-15
中国葛洲坝集团建设工程有限公司
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Problems solved by technology

However, the current arrangement of cooling water pipes is evenly arranged, without considering the temperature distribution inside the actual concrete block. Although the temperature inside the concrete can be controlled to reduce the temperature difference between the inside and outside of the concrete, due to the difference in heat dissipation effect,

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  • Method for arranging large-size concrete cooling water pipe
  • Method for arranging large-size concrete cooling water pipe
  • Method for arranging large-size concrete cooling water pipe

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Embodiment Construction

[0015] A method for arranging large-volume concrete cooling water pipes, comprising the following steps:

[0016] a. Use the actual measurement or temperature field numerical simulation technology to obtain the temperature field distribution of mass concrete, and draw the isotherm diagram of the temperature field. The isotherm diagram of the mass concrete temperature field is as follows figure 1 shown;

[0017] The isotherm is similar to the contour line in the topographic map, which is the spatial connection of the same temperature points in a certain plane in the block, and is generally a closed ellipse from the center to the boundary. The temperature field can be obtained through actual measurement or theoretical calculation. Theoretical calculation is to digitize the parameters that affect the temperature change according to the mathematical model, and then use a computer to calculate. This process is numerical simulation calculation.

[0018] b. Arrange the cooling water...

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Abstract

The invention discloses a method for arranging a large-size concrete cooling water pipe, comprising the following steps of: a. obtaining the temperature filed distribution condition of large-size concrete and drawing an isothermal chart of the temperature field by adopting a real-measuring or temperature field numerical simulating technology; b. arranging the cooling water pipe along an isotherm or close to the isotherm; arranging feeding water in an area with highest concrete temperature and arranging the distance between the water pipes according to the distance of the isotherm or approximate to the distance of the isotherm. According to the method for arranging the large-size concrete cooling water pipe, provided by the invention, the defect that the cooling water pipes are equidistantly arranged is overcome, the temperature difference inside the concrete can be effectively reduced, the temperature stress inside the concrete is reduced, the concrete is prevented from cracking and cracks of the concrete are limited in expanding.

Description

technical field [0001] The invention relates to a method for arranging cooling water pipes, in particular to a method for arranging large-volume concrete cooling water pipes. Background technique [0002] The temperature stress in mass concrete is one of the most common reasons for the cracking of concrete itself. Especially during the construction period of mass concrete, the hydration of concrete generates a lot of heat. If the heat cannot be effectively and uniformly dissipated, a large temperature stress will be formed, resulting in Concrete cracking caused quality accidents. Therefore, the quality of mass concrete temperature control directly affects the construction quality of mass concrete, which is the key point of mass concrete construction quality control, especially for mass concrete under load, such as thin-walled high arch dams, concrete temperature control is the most important Task. [0003] At present, the industry generally adopts pre-embedded heat dissipa...

Claims

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Application Information

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IPC IPC(8): E04G21/02E02D15/00
CPCE04G21/06
Inventor 周厚贵马吉明许娜宋润英谭恺炎曹生荣马金刚郭光文余英鄢江平戴志清孙昌忠张开广商永红
Owner 中国葛洲坝集团建设工程有限公司
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