冰雪路 摩擦特性与 风险管控研究综

The traffic safety of ice and snow pavement has always been the difficult problem to be solved in transportation industry. Intelligent management of operation risk is an effective way to ensure traffic safety. The research progress of ice and snow pavement intelligent management at home and abroad was overviewed to promote the development of ice and snow pavement intelligent management technology and clarify the key issues and future direction. First, the impact of ice and snow on traffic were expounded, which reveals the relationship between people, vehicles, pavement and traffic accidents. It is clear that the root cause of the accident is the decline of pavement friction caused by ice and snow. Subsequently, the mechanism, influencing factors, prediction model and evaluation method of tire-ice-pavement friction on ice and snow pavement are discussed. Moreover, the operating principle and pavement engineering applicability of pavement snow and ice state sensing technology were compared and analyzed to put forward the technical requirements.Finally, the static and dynamic risk assessment and management methods are summarized. The static methods include meteorological method, historical accident data method and mechanical method, and the dynamic methods include vehicle dynamic method, traffic flow method and comprehensive risk assessment method. The comprehensive risk assessment method can represent the multi-factor dynamic change of road operation risk, which will be the way for intelligent management of ice and snow pavement in the future.