摘要
为给组合式护栏选择合理的混凝土底座坡面,运用有限元动态模拟技术对几种混凝土坡面进行仿真研究,研究结果表明:直壁式坡面对车辆缓冲能力不强,改进型坡面和单坡面对车辆具有良好的缓冲能力;改进型坡面和单坡面分别通过车辆爬升和倾斜来增加碰撞时间,缓冲机理有所不同。研究成果可以为组合式护栏混凝土底座坡面形式合理选取提供参考。
In order to select reasonable concrete slope form of combined guardrail,simulation research is done on several slope forms based on finite element analysis.The results indicate that buffering ability of erect concrete slope is not enough to cars while that of F-type and single slope is good;buffering mechanism of F-type and single slope is different,F-type slope buffers car by car climbing and single slope buffers car by car leaning.Research results will provide the reference for slope application on combined guardrails.
出处
《公路》
北大核心
2009年第9期229-232,共4页
Highway
关键词
护栏
坡面
有限元方法
碰撞
乘员加速度
guardrail
slope
Finite Element Method
impact
occupant acceleration
