Overloaded Road Pavement Design Study

On the basis of the study of traffic features of heavy-load vehicles, the vehicle weight data and the axle-load spectrum of different vehicles were collected for some typical heavy-duty roads in China, and according to the features of heavy-loading pavement, deficiency of the former load-figure are analyzed and new figures which are suitable for heavy-load pavements are put forward. Meanwhile, based on the research of the cement concrete fatigue equation and the damage mechanism of asphalt pavement under heavy-load vehicles, axle load conversion equations fitting for heavy-load cement concrete pavement and asphalt pavement are established respectively by further analysis. In addition, design indices, traffic and material parameters and structural combination for heavy-load pavements are discussed in this paper as well. On the basis of the studies above, a set of systematic design method that can be put into practice for heavy-load cement concrete and asphalt pavement is put forward respectively.