山区公路路侧风险评估及护栏设置方法的研究硕士学位论文.docVIP

硕士学位论文 （专业学位） 摘要 ABSTRACT Along with the highway construction extend to the mountains high, in the design process, it often appears that the design index is close to or exceed the limiting design value because of the topography, geology, economic development level and other factors, coupled with rain and snow and freezing rain weather rain and snow and freezing rain weather appear more, which lead to frequent especially serious casualty accidents, most are related to the roadside hazards. Therefore, in recent years, research on roadside safety in mountain highway become gradually abundant, how to forecast the roadside accident possibility in advance effectively, how to discover roadside hidden danger ahead of time, and adopt reasonable roadside protective facilities become the focus of attention at present. After investigating and Survey of the actual situation of mountain highway in Guizhou province, this paper analyzes the factors that influence the roadside danger systematically, multifactor security index model is built using multiple regression based on the accident rate data under the influence of single factor. Then, roadside risk assessment model is established based on fuzzy mathematic theory, roadside risk under the combination cases of road characteristics and roadside danger level is graded. Finally, according to the different roadside risk grade, study on how to reasonably select the protection level and structure type of roadside guardrail is carried out. Through the study of this paper, it can effectively improve the level of roadside safety in Guizhou mountain highway and reduce the occurrence of casualty accident in mountain highway. And this study can provide technical guidance for safety design and reasonably utilization of construction found of new roads, the accident risk analysis and safety improvement measures of operating highway. The application of research results is of great significance to the construction and operation of mountain hi