Abstract:By analyzing the practical application and the vehicle collision accidents of the road divider, the collision test parameters and the safety performance evaluation criterion of the road divider are studied and determined on the basis of referring to the relevant standards and norms at home and abroad, and combined with the multiple characteristics of the divider accidents and the vehicle passenger safety, starting from the impact of vehicle type, impact mass, impact speed, impact angle, impact point position and other factors indicators. And the safety performance of the common road divider structure is evaluated by the finite element simulation technology based on the test parameters and the evaluation criteria. The results show that in the accident of vehicle collision with the divider, the main vehicles involved are the minibuses, and there are more cases of the injury caused by the intrusion of separation railings into the crew cabin while other types of injury are less. Therefore, in the practical use of the road divider, the main investigation should be made on the possibility of the road divider and its components impinging on the occupant compartment during vehicle collisions. And under the direct collision condition of a 1.5 t car at a speed of 60 km/h, the lateral bar of the common road divider intrudes into the passenger compartment of the vehicle, and its safety performance does not meet the requirements of the evaluation standard. The study result provides some references for the formulation of safety performance evaluation standard of the road divider.
