Study On Security Fault-tolerant Technology Of Highway Bridge-tunnel Group In Mountainous Areas

Highways with bridge-tunnel group located in the mountainous areas are featured by the complex traffic environment, which have three different structural types: bridges, roads,and tunnels, belonging to the mutation point, is the main point of space distribution of traffic accident. Occurred in the mountainous area highway with bridge-tunnel group traffic accident is often the casualty accidents with high fatality rate. At present, more safety research at home and abroad on Mountainous Freeway is singe bridge, singe tunnel, the research is not enough when it comes to the comprehensive analysis of the combination of these three aspects as the counter-influenced subjects. therefore, in-depth analysis of characteristics of bridge-tunnel group of traffic accident, find out the cause of the accident, on the basis of this put forward the corresponding security fault tolerance technology for improving the highway bridge and tunnel mountain group of road traffic safety, Reduceing the accident rate is of great significance to create a safe and harmonious traffic environment.In this paper, with many domestic mountain highway bridge and tunnel group section as the research object, combined with the traffic accident statistical data, according to the mountainous area highway bridge and tunnel group of road traffic safety was studied, including the analysis of the characteristics of traffic accident, traffic accident cause analysis, bridge and tunnel group of road safety fault tolerant ability to enhance the technology research and evaluation of the effect of fault tolerant technique of dissipative structure theory based on the.First of all, this paper is based on the statistical data of a plurality of Mountainous Freeway Bridge and tunnel group of traffic accident, the system analyzes the characteristics, distribution of traffic accident time climate distribution, vehicle type distribution characteristics and the accident characteristics of distribution, and get the distribution characteristics of traffic accidents in various states of the.Secondly, this article from the highway traffic theory, based on expounding the road traffic system composed of relationship between elements and elements, according to the specific situation of mountainous highway bridge and tunnel sections of the main group, were summarized and analyzed from the four aspects of driver characteristics, vehicle characteristics, traffic environment characteristics, fault tolerant ability factorson Influencing Factors of tunnel group road traffic safety, and on the basis of the establishment of road traffic accidents of bridge and tunnel group GO diagram, calculation of accident probability formula.Combined with the characteristics and causes of the accident, the measures to solve the optimization, signs and markings, anti-collision structure improvement, variable information prompt and traffic accident emergency rescue system and many aspects of highway bridge and tunnel mountain group of road safety fault tolerant ability to enhance the technology from the driver’s visual brightness.Finally, on the basis of safety entropy flow theory as a mountain highway tunnel group traffic road safety system analysis, evaluation of the effect of the application of dissipative structure on mountain highway tunnel group traffic safety fault tolerance technology to improve, Brussels is used as a criterion, the results showed that the safety entropy theory and dissipative structure for bridge and tunnel group section to enhance the technical evaluation of the effect of security fault tolerance ability is feasible.