Pavement Deicing And Working Conditions Of Temperature

Heilongjiang province is located in China's most north, belong to continental monsoon climate zone, winter long and cold winter snowstorms major disasters is appeared on the highway pavement snowstorms influence extremely serious. The asphalt pavement caused disease due to temperature, temperature causes the high temperature stability loss, engendering rut; Temperature is reduced, transverse temperature crack. Temperature field produces stress, making the pavement heat bilges cold shrink. Based on the thermodynamics theory of heat conduction and fracture mechanics theory as a foundation, study estimated pavement temperature field, the method of comparison features and choose several methods applied ABAQUS finite element software is built, analysis of 3d surface model produced temperature variation of stress, strain and displacement distribution with temperature due to temperature change, find pavement causes the most unfavorable position of the disease, for design, subcontracted reference. The materials discussed attributes, structure layer thickness, temperature variation amplitude of the influence of temperature stress. And low temperatures, the prediction model of relative cracking rate, and pavement possible crack spacing. Analysis of the temperature of the winter weather in northern China, summarizes the snowmelt return period working mechanism of deicing pavement. Describe the physical, the ice melting mathematical model. Contrast the road snowmelt deicing various methods, classifies cable heating mode melts snow and advantage of this technology for future development trends. By examples survey cable heating engineering snowmelt deicing technology application effect and use the status quo. And the domestic cable heating snowmelt deicing engineering puts forward problems and needs to be improved point of view.