Method for arranging large-size concrete cooling water pipe

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...

AI Technical Summary

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, the temperature in the center of the concrete is high. The boundary temperature is low, and the arrangement of water pipes at equal intervals cannot effectively reduce the internal temperature difference of the concrete. This internal temperature difference will still generate unfavorable temperature stress and have great destructive power to the concrete

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