Digitalized construction site concrete prediction type anti-cracking method

Abstract

The invention discloses a digitalized construction site concrete prediction type anti-cracking method which comprises the following steps: firstly, arranging a temperature and stress sensor at a concrete sensitive position, then endowing concrete with a thermal parameter initial value, and then feeding back and analyzing a concrete thermodynamic parameter based on a particle swarm algorithm; calculating internal temperature predicted value and a stress predicted value in future 4-7 days according to a control equation of a three-dimensional unstable temperature field and a control equation ofa creep stress field; and finally, taking anti-cracking measures on the mass concrete according to the solved stress prediction value. According to the method provided by the invention, the calculation result is more accurate, and the concrete anti-cracking measure is adjusted according to the predicted future concrete temperature and stress development trend, so that the anti-cracking effect is the best.

Description

technical field [0001] The invention relates to a concrete anti-cracking method, in particular to a digitalized construction site concrete predictive anti-cracking method. Background technique [0002] Hydraulic structures are mostly large-volume concrete structures, and the common quality problem that often occurs during construction is concrete cracks. The crack problem not only affects the durability and service life of the project, but also seriously threatens the safe and stable operation of the concrete structure. [0003] The hydration reaction in the early concrete will generate a lot of heat, which will increase the temperature of the concrete structure. During construction, for general concrete structures, especially concrete structures with relatively low ambient temperature, the internal temperature is generally high and the temperature of the concrete near the surface is low. The surface exhibits "relative shrinkage" relative to the interior, and at this time,...

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Problems solved by technology

[0005] Existing concrete anti-cracking measures include water cooling, covering heat preservation, and watering curing, etc., but such measures cannot realize real-time changes in the internal temperature and stress of concrete, nor can they predict the future development trend of concrete temperature and stress. To adjust the concrete anti-cracking measures to achieve the best anti-cracking effect

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