基于行车控速效果分析的校园内减速带 优化研究

为了更好地维护校园交通安全，基于减速带减速原理，针对校园环境对校内减速带的优化 设计进行研究。选取南京林业大学校园内翠竹路为实验路段，使用雷达测速仪测得通过该路段减 速带的具体速度值，通过对调查数据的整理和分析，得知实验减速带的控速效果未能达到最优。 为了提高校园内减速带的控速效果，构建了车辆通过减速带时的车轮轴心运动轨迹方程模型，借 助MATLAB软件仿真，以纵向加速度为评价指标，进行了圆弧减速带在不同宽度和高度条件下 的振动分析。结果表明，在相同车速条件下，不同尺寸的减速带产生的纵向加速度与高度成正 比，与宽度成反比；适合校园内安装的减速带最优尺寸为高50mm、宽350mm。

Campus Speed Bump Design Optimization Based on Driving Speed Deceleration Effect

In order to improve traffic safety on campus, further study was proposed to optimize the speed bump design based on the working principle of speed bump. Taking Bamboo road in Nanjing Forestry University as an example, some data of specific speed was collected using Radar speed detector. By processing and analyzing the survey data, it concluded that the deceleration of the experimental speed bump failed to achieve the optimal effect. In order to solve this problem, a model of wheel axis motion trajectory equation for the vehicle passing through the speed bump was constructed. Taking longitudinal acceleration as an evaluation index, the vibration of arc speed bumps in different sizes were analyzed with the help of MATLAB simulation.The result shows that longitudinal acceleration was proportional to the height and inversely proportional to the width under the condition of same vehicle speed; the most optimum size of speed bumps suit to campus is high 50mm and wide 350mm.