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为降低交通事故率,参考出入口管理策略,分析大型公建对向机动车出入口特征,以消除间距不足引发的冲突点为优化目标,根据微观交通流理论,建立对向出入口最小间距模型,给出避开交叉口功能区的最大间距,构成间距范围。结合交通仿真与熵权法,利用基于交通冲突技术的逼近理想解排序法,对间距候选方案进行安全评价,得出最优间距,并以某大型公建区域为例进行计算及优选。计算结果表明:该区域对向出入口间距范围为83.98～278.76m,最优间距为120.73m,对应最优解贴近度为0.5182,间距值位于间距范围内时,存在最大贴近度。
In order to reduce the traffic accident rate, referring to the entrance and exit management strategy, the characteristics of the entrance and exit of large-scale public buildings are analyzed, and the conflict point caused by the insufficient distance is taken as the optimization goal. According to the micro-traffic flow theory, Avoid the maximum span of the intersection function area, forming the distance range. Combining with traffic simulation and entropy method, this paper makes use of the approach of approximate ideal solution based on traffic conflict technology to evaluate the safety of the pitch candidate scheme, and obtains the optimal spacing. The calculation and optimization of a large-scale public construction area are taken as an example. The calculated results show that the distance between the entrances and exits of the area is 83.98 ~ 278.76m, the optimal spacing is 120.73m, the corresponding optimal solution is 0.5182, and the maximum closeness exists when the spacing is within the distance range.