桥梁引道的交通安全评价研究

由于地形地貌、绕避特殊建筑物等原因,一些桥梁引道的设计线形接近于设计标准底线,特别是在高差较大的地点,很容易出现线形组合不当、设计车速突变等一系列问题,带来了一定的交通安全隐患。针对这类问题,从交通安全隐患形成的原因出发,分析了多种因素的影响,按照不同的特征、形成机理等方面构建了桥梁引道的交通安全评价指标体系,并以某大桥为例,在现状交通运行调查的基础上,对评价体系和算法进行了实证分析。

The Traffic Safety Evaluation of the Bridge Approach

Due to the topography around to avoid the special buildings and other reasons, the design of the Bridge Approach linear close to the bottom line of the design standards, especially in the place where height difference is rather large It is prone to a linear combination of improper design speed of mutation and a series of problem, trafiqe safety haz- ards. Such problems from a traffic safety hazard reasons for the formation of a variety of factors, in accordance with differ- ent characteristics, formation mechanism to build the bridge approach roads traffic safety evaluation index system, Final-ly, a bridge, for example, in the status quo traffic nmning investigation on the basis of empirical analysis and verifica-tion, evaluation system and algorithm.