汽车冲击防撞护栏的运动响应分析

对防撞护栏与汽车工作特性以及防撞护栏的结构进行分析，并分析现有计算冲击力的原理和方法，建立考虑汽车局部变形和护栏变形共同影响的汽车－钢筋混凝土防撞护栏连续系统的力学计算模型，确定车辆和防撞所栏系统动力方程，求解碰撞力的大不，给出在汽车冲撞过程中的减加速度 应以及护栏所受冲击力的计算表达式，以解放CA105B型汽车冲击钢筋混凝土护栏为例求解碰撞力，并与实车碰撞结果进行比较和分析，对改善我国公路桥梁防撞护栏结构及合理设计新型防撞护栏提供了重要的依据。

A Study of Movement Response of Vehicle Impacting on Safety Barrier

By analyzing the working characteristic of safety barrier and vehicle and based on the current theory and method of calculating impact forces and the deformation of both vehicle and safety barrier,a dynamic model of vehicle impacting safety barrier system was established and its dynamic equation was presented. The vehicle impact forces acting on safety barrier were calculated and the movement response such as acceleration and the calculation expression of impact forces were also given. Taking the Jiefang CA105B as an example, the whole process of vehicle impacting safety barrier was simulated, and the results of movement response were compared with the experiment on actual vehicle safety barrier. The conclusions from the paper can be referred to improve the current structure of safety barrier and the design for the new types of safety barrier.