Decay Law of Anti-skid Performance and Safety Speed Analysis on Icy Road Sections
China's southern mountainous road sections in winter is prone to ice phenomenon,resulting in a sharp decrease in the adhe-sion coefficient of the road surface,the vehicle is very easy to tire skidding,lateral instability,braking distance increased significantly when driving on the ice,traffic accidents occur frequently.In order to study the anti-skid performance of icy road sections,for exam-ple,the Danzhai section of the G321 line in Guizhou Province,through on-site research and collection of anti-skid performance of the road section,driving speed and other data,through the exponential attenuation friction model to analyze the anti-skid performance of the icy road surface degradation law,taking into consideration of anti-skid decay characteristics of the pavement,super-high,flat curve radius and other factors of icy road section of the vehicle sideways slippage mechanism has been investigated and analyzed the lateral stability of the vehicle and stopping sight distance in two aspects of icy road.It also analyzes the safe driving speed of icy road from the aspects of vehicle lateral stability and stopping sight distance.The results show that the anti-skid performance of the icy road section is about 20%lower than that of the general road section,and the safe driving speed is reduced to about 45 km/h.The analyzed results can provide theoretical basis for the safety management of the icy road section.
万方数据
维普
