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文章应用运行车速断面图评估法,结合我国已有的研究成果,建立了我国双车道公路设计一致性评价模型。模型以VisualC++为开发工具,实现的功能包括预测路段的运行车速,进入、离开曲线的加减速度长度预测,利用TWOPAS预测坡度限制车速,最后通过相邻路段的车速差来评价道路线形的连续性。通过典型实例验证,模型预测结果良好,表明该模型对我国双车道公路的线形设计和安全评价具有一定的参考价值。
In this paper, the evaluation method of running speed profiles is used in this paper. Based on the existing research results in our country, a two-lane highway design consistency assessment model is established. The model uses Visual C ++ as its development tool, and its functions include predicting the running speed of the road segment, predicting the length of the acceleration and deceleration of entering and leaving curve, predicting the speed limit by TWOPAS, and evaluating the continuity of road shape by the speed difference between adjacent segments . Through typical example verification, the result of model prediction is good, which shows that the model has certain reference value for the linear design and safety evaluation of two-lane highway in China.