摘要
基于高速公路的三维空间形态,提出了空间视距的概念,并通过空间两点通视原理,建立了空间视距计算和分析的数学模型。与早前的视距计算方法和研究相比,该方法对车道空间视距计算准确,能够计算和分析高速公路中央分隔带护栏对外侧车道视距的影响,为改进设计和安全评价提供了依据。
Based on the 3Dspace form of highway,the concept of 3D-view sight distance is put forward,and depended on the visibility principle of two points in the space,the mathematical model of calculation and analysis of 3D-view sight distance is established.Compared with previous calculation methods and researches of stadia,the method is more accurate,by which can calculate and analyze the influence of highway median guardrail for the lateral lane stadia,and can provide basis for improving design and security evaluation.
出处
《交通科技》
2017年第1期148-150,共3页
Transportation Science & Technology
