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为将用于低速场合的减速垄更合理地安装在干线公路上(高速场合),对现有的减速垄进行改进,重新设计横截面的形状,并较细致地分析和描述减速垄横截面几何参数与冲击力(车辆振动,对路面冲击力)之间的关系。用仿真方法,在计算机上借助多体动力学仿真软件ADAMS建立车辆动力学模型和减速垄模型,并对模型进行验证。通过大量的仿真试验,得到下述结论:目前街区常用的减速垄不能直接安装于公路;在公路设置减速垄时,其宽度应至少在600 mm以上,同时必须降低减速垄的高度;T形,多边形,圆顶形减速垄之间就冲击性(路面冲击力,警示力度)而言并不存在显著的差别;对于T形减速垄,通过降低坡面斜率所能起到的路面保护作用十分有限;减速垄下缘厚度只要在通常范围内,其数值对于冲击性无关紧要。
In order to more rationally install the decelerating ridge for low-speed applications on the trunk highway (high-speed occasion), the existing decelerating ridge should be improved to redesign the shape of the cross-section and to analyze and describe the cross-sectional geometry of the decelerating ridge more carefully Relationship between parameters and impact force (vehicle vibration, impact on pavement). Using simulation method, vehicle dynamic model and deceleration ridge model are established on the computer with multi-body dynamics simulation software ADAMS, and the model is verified. Through a large number of simulation tests, the following conclusions can be drawn: Currently, the deceleration ridge commonly used in blocks can not be directly installed on the highway; when the speed reduction ridge is set on a highway, its width should be at least 600 mm and the height of the deceleration ridge must be reduced; There is no significant difference between polygons and dome-shaped decelerators in terms of impact (pavement impact, warning strength); for T-shaped ridge, the pavement protection that can be achieved by reducing the slope of the slope is limited The thickness of the lower edge of deceleration ridge is within the normal range and its value is not critical to impact.