基于道路结构的加速度干扰模型及行车安全舒适性评价

行车安全舒适性是道路评价的重要指标,而道路结构又是安全舒适性的重要影响因素。在分析现有评价体系不足的同时,引入加速度干扰作为行车安全舒适性的评价指标的新评价方法。首先考虑到加速度干扰与安全舒适性的密切关系,先建立了三维加速度干扰模型。进而从道路结构角度出发,建立了基于道路结构的加速度干扰模型。最后,对实际路段进行仿真,结果表明在圆弧段上,参数圆心角、半径、车速均对行车安全舒适性有影响。基于道路结构的加速度干扰模型的构建既为定量分析评价行车安全舒适性提供了数学模型,又可在道路设计阶段利用设计参数就直接对行车安全舒适性做出准确的评价预测。

Acceleration Noise Model Based on Road Structure and Evaluation of Traffic Safety and Riding Comfort

The traffic safety and riding comfort is one of the most important indexes of road evaluation.And the road structure is one of the most influencing factors of traffic safety and riding comfort.On the basis of the analyses of the existing evaluation system,the acceleration noise as a new method to evaluate the traffic safety and riding comfort is put forward.Then on the basis of the road structure a new Acceleration Noise Model is built.Last,a section of a road is emulated.The results indicate that the central angle,radii and speed all influence the traffic safety and riding comfort.The newly-built model can not only evaluate the traffic safety and riding comfort quantitatively,but also do exactly forecasting evaluation in the stage of road design.