高速公路中间带护栏碰撞仿真实验

Simulation test on collision of vehicles on guard-rail of expressway median

针对高速公路中间带护栏安全性难以评估及实车碰撞护栏存在危险性等问题,提出了基于计算机仿真的高速公路中间带护栏碰撞安全性评估方法。建立了汽车模型、护栏模型、路缘石模型和碰撞模型,进行了多角度、不同速度和有无路缘石情况下的汽车碰撞仿真实验,并对碰撞数据进行了分析。结果表明:通过仿真实验可获得各种情况下汽车碰撞护栏的实验数据,为进行护栏安全性评估提供了依据;该方法具有参数容易修改、数据表达直观、实验速度快和节省费用等优点。

It is difficult and hazardous to test the collision of vehicles on guard-rail of expressway median. This paper puts forward a safety evaluation method for testing the collision by computer simulation. With the construction of vehicle model, guard-rail model, curb model, and collision model, the multi-angle collisions in different velocities are simulated. Using the collision datum, the relationship between guard-rail and vehicle safety is found to evaluate the guard-rail safety. In this method, it is easy to adjust the model parameters, the datum can be expressed with visual display, the testing speed is very high, and the testing cost is very low. 6 figs, 11 refs.