格栅增强沥青混凝土电热性能数值模拟

摘要

Carbon/glass fiber geogrid reinforced asphalt concrete is a new type of composite,which not only has good mechanical properties,but also shows excellent electrical conductivity.In this paper,the good electrother-mal properties of carbon/glass fiber geogrid reinforced asphalt concrete were used to heat the asphalt concrete slab,then melt snow and deice the ice.The environment temperature,the wind speed,the heating power and the thickness of ice are four main factors of the asphalt concrete slab deicing efficiency.In this paper,the deicing process of carbon/glass fiber geogrid reinforced asphalt concrete were simulated by ANSYS finite element software to predict deicing effect.The experimental values were used to verify the correctness of the numerical simulation. The results show that under various operating conditions,the numerical values are very close to the experimental values in the deicing process of carbon/glass fiber geogrid reinforced asphalt concrete.%利用碳／玻璃纤维格栅增强沥青混凝土的良好电热性能，使沥青混凝土板升温起到融雪化冰的作用。环境温度、风速、发热功率和冰层厚度是影响沥青混凝土板化冰效率的4个主要因素。应用ANSYS有限元软件对碳／玻璃纤维格栅增强沥青混凝土的化冰过程进行数值模拟来预测其化冰效果，并用试验结果验证有限元模拟的正确性。结果表明：在各种工况下，碳／玻璃纤维格栅增强沥青混凝土化冰过程的模拟值与试验值的吻合度比较高。