Mass concrete-based temperature field research method and temperature control method

Abstract

The invention discloses a mass concrete-based temperature field research method and a mass concrete-based temperature control method. The research method comprises the following steps of: establishinga mass concrete entity research object; measuring temperatures, in a pouring process, of a plurality of measurement points of the entity, and drawing corresponding temperature change curves to obtaintemperature field characteristics and a temperature change law; establishing a finite element analysis model according to the entity research object and automatically calculating temperatures of thecorresponding measurement points; adjusting temperature field calculation parameter of the model through comparing the calculated temperature values of the model with the actually measured temperaturevalues; and finally adjusting influence factors influencing hydration heat in a mass concrete model, carrying out analysis to obtain an influence result and an influence law, and adopting a corresponding temperature control method according to the result and the law. According to the mass concrete-based temperature field research method and the mass concrete-based temperature control method, fissures are prevented from occurring in mass concrete, and the pouring quality of concrete and the total quantity of projects are ensured.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a temperature field research method and a temperature control method based on mass concrete. Background technique [0002] In the early stage of concrete hardening, the chemical reaction between cement and water will release more heat, and the temperature of concrete will gradually increase. Common-sized concrete components have good heat dissipation conditions, the temperature difference between the inside and outside of the concrete is small, and the deformation of the entire component is basically the same, so serious hydration heat cracks will not occur. However, due to the large size of the mass concrete, the heat dissipation is slow, and the heat of hydration makes the internal temperature of the concrete rise significantly. "Code for Construction of Mass Concrete" (GB50496-2009) pointed out that mass concrete is a mass of concrete whose minimum geometric ...

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Problems solved by technology

[0006] The purpose of the present invention is to: in the process of large-scale concrete pouring, because the temperature distribution law and mechanism characteristics of the temperature field cannot be grasped, the influencing factors of the heat of hydration of concrete, and the influencing results and laws of the influencing factors cannot be determined, resulting in the inability to Provide an effective temperature control method to control the temperature of mass concrete pouring, so that cracks often appear in the mass concrete structure, affecting the quality of concrete pouring and the safety of the entire project. Provide a research method and temperature control based on the temperature field of mass concrete method, this research method establishes the entity research object and the finite element analysis model, and adjusts the calculation parameters of the finite element analysis model to obtain the temperature field characteristics and temperature change law of the mass concrete, and adjusts the hydration in the mass concrete model. The influence factors of heat can be analyzed to obtain the influence results and rules of relevant factors on concrete, so as to determine the corresponding temperature control measures, avoid cracks in large-volume concrete, and ensure the quality of concrete pouring and the overall quality of the project

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