基于宽容性理念的高速公路优化设计研究-建筑与土木工程专业论文.docxVIP

万方数据 万方数据 ABSTRACT Since the 1980s, the freeway construction has developed rapidly in our country, however, the number of traffic accidents and casualties happened on the freeway every year are still keep at a high level, causing serious harm on the social economic development and peoples lives. Road design in our country uses design speed as a general principle which based the idea of Car-oriented , without taking the physiological characteristics and behavior habits of the driver into consideration. However, the driver will make the wrong judgment and action unavoidable in some unexpected situations, which may cause traffic accident, bring about heavy casualties and economic losses. We should not be asking too much that every driver can make to emergencies are calm, accurate and rapid judgment, obviously this is unrealistic. The forgiving concept is based on the people-oriented, fully considering the drivers physiological characteristics and driving habits, it starts from road design itself, through technical means to actively guide the driving behavior of the driver and correct the deviation, while providing certain tolerance space when the driver make mistakes, maximize the protection of the drivers safety. This article is based on the tolerance idea to study 3 aspects on freeway optimization design method from alignment optimization, initiative induction and strengthen tolerance. On the basis of K5+000~K19+000 in Beijing-Xinjiang freeway from Jiao Niwan to the border of Hebei and Shanxi , the whole road is divided into 20 units according to the characters of the route and the characteristics of the VISSIM software built-in model, collect operating speed of the whole route using VISSIM, and get the operating speed of each section unit and using the operating speed to check alignment consistency, at last use technical means to disposal section that is not in conformity with the requirements. Based on the forgiving concept, this paper introduces several kinds of f