The internal temperature field of mass concrete was simulated by finite element analysis software.The influence of different ambient temperature on concrete temperature field was analyzed.The correctness of the simulation results was verified by field monitoring data.The change of internal temperature field of concrete was studied by changing the change of external environment temperature and the thickness of concrete insulation layer.The results showed that the simulation of concrete temperature field with sine function was more practical than that with average temperature.The error between the simulated value and the measured value of sine function could be controlled within 12%.The decrease of the external ambient temperature would reduce the maximum and minimum values of the concrete temperature field,and the maximum reduction range was ignored.The external average temperature of 18℃was the dividing point of the concrete internal temperature difference of 25℃.The upper insulation layer of concrete would reduce the temperature in the concrete temperature field and the maximum temperature difference.When the insulation layer reached 0.8 mm,the temperature field and the maximum temperature difference would increase sharply.
关键词
大体积混凝土/温度场/温度函数/保温层厚度
Key words
mass concrete/temperature field/temperature function/thickness of insulation layer
维普
万方数据