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公路设计时会出现几种设计方案都满足道路设计规范要求,造成设计人员难以抉择的局面;另外,现有的针对设计阶段道路开展行车安全性评价和潜在危险点预测的方法还不完善。鉴于此,借助于车辆动力学仿真模拟方法,建立路线-驾驶员-车辆的闭环仿真系统;以此为平台对龙泉~浦城(浙闽界)高速公路开展虚拟行车试验,根据沿路线上的汽车动力学以及运动学响应,评价初步设计、优化设计和施工图设计方案的速度协调性,道路侧滑、侧翻的可能性,行车舒适性和操纵轻便性,最终综合判断选择最优设计方案并对方案中的一些不足给出相应的建议。
In the course of highway design, there are several designs to meet the requirements of the road design code, which makes it difficult for the designers to make decisions. In addition, the existing methods for evaluating the traffic safety and predicting the potential dangerous points on the road at the design stage are not perfect. In view of this, a closed-loop simulation system of route-driver-vehicle is established by means of vehicle dynamics simulation method. Based on this, a virtual driving test is carried out on the expressway of Longquan ~ Pucheng (Zhejiang-Fujian Province) Kinematics and kinematic response, evaluation of the preliminary design, optimization design and construction drawings design speed coordination, the possibility of road slip, rollover, driving comfort and ease of handling, and ultimately determine the optimal choice of integrated design and Some proposals on the program to give some advice.