Adaptive temperature and stress control method of large-volume concrete

Abstract

The invention relates to an adaptive temperature and stress control method of large-volume concrete. According to the method, multiple identical successively constructed sub-concrete structures of thesame large-volume concrete or multiple identical successively constructed large-volume concrete structures are controlled. The method specifically comprises the following steps: constructing the first concrete structure, and obtaining the field measurement data and design data of the first concrete structure; performing finite element model iteration by using the obtained data and a code value oran engineering experience value as basic conditions to identify finite element model parameters; and performing finite element calculation based on the finite element model parameters obtained in theprevious step to obtain control parameters for controlling the next concrete structure to be constructed, until all the concrete structures are completed. Compared with the prior art, the adaptive temperature and stress control method provided by the invention has the advantages of solving various problems existing in the temperature control of the large-volume concrete, and realizing the adaptive temperature and stress of the large-volume concrete by establishing an accurate control model through an adaptive method.

Description

technical field [0001] The invention belongs to the field of civil engineering construction, and in particular relates to a large-volume concrete self-adaptive temperature and stress control method, which is especially suitable for the temperature and stress control of large-volume concrete structures that are constructed in blocks of the same structure and constructed successively with the same design. Background technique [0002] The temperature and crack control of mass concrete is one of the common problems in the field of civil engineering. At present, the existing control method is to control the temperature within the predetermined index range. Due to the thermal parameters of components, hydration rate, material parameters, and external environment Due to a large number of uncertainties, conventional control methods cannot reflect the real temperature and stress development. [0003] Chinese patent CN103485542A discloses a large-volume concrete hydration heat temper...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a mass concrete self-adaptive temperature and stress control method in order to overcome the above-mentioned defects in the prior art, so as to solve the problems in the temperature control of mass concrete, such as the wide variety of structural types, random distribution of material properties, and the construction environment. To deal with changing problems, establish a precise control model through an adaptive method to realize the adaptive control of the temperature and stress of mass concrete

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