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Thermal Science - Online First

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Numerical simulation and analysis of the effect of temperature on the fission of concrete

In order to further improve the crack resistance of concrete engineering, a numerical simulation method is constructed to study the effect of temperature on the fission of concrete. Based on the finite element method, the mathematical model is constructed, and the numerical calculation and image display are used to simulate and analyze the engineering problems. The temperature sensor is used to observe the whole variation law of typical temperature field, and the temperature of concrete entering and pouring is obtained. Thus, the temperature control real-time automatic acquisition system is set up. According to the temperature field and temperature stress distribution rules, the ideal temperature control curve model of concrete is proposed. Finally, the numerical calculation and experiment of the model are carried out. The results show that the maximum surface stress level decreases in varying degrees after different surface insulation measures are taken, and if the thermal insulation material’s β ≤ kJ/ (m2.h. ℃), the maximum surface stress of concrete can be reduced to 0.06 ~ 0.14 MPA. In this paper, it is shown that the negative effect of the large diurnal temperature difference on concrete surface insulation can be controlled.
PAPER REVISED: 2019-02-05
PAPER ACCEPTED: 2019-02-15
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