提升现有中分带波形梁护栏防护能力的方案对比分析

Comparison and Analysis of Schemes for Improving the Protection Capacity of Existing Corrugated Beam Guardrail

车辆在高速公路行驶时速度较快,发生事故后可能冲破中分带护栏冲向对向车道,造成更大的损失。针对冲破中分带护栏驶入对向车道的交通事故,本文在传统护栏形式的基础,提出在中分带两侧的立柱间添加支撑的四种加强方案,基于结构力学、材料力学的相关理论知识对增设的钢支杆截面进行设计,基于伪静力法汽车碰撞模型验证不同加强方案防护能力的提升效果,最后经过各方面对比分析得出最优加强方案。

The speed of vehicles running on the expressway is fast,which may break through the guardrail and rush to the opposite lane after the accident,resulting in greater loss.Aiming at the traffic accident of breaking through the guardrail and driving into the opposite lane,based on the traditional form of guardrail,this paper put forward four strengthening schemes of adding supports between the columns on both sides of the middle separation zone.Based on the relevant theoretical knowledge of structural mechanics and material mechanics,the section of the additional steel strut was designed,and the improvement of the protection ability of different strengthening schemes was verified based on the pseudo-static vehicle collision model.Finally,through the comparative analysis of various aspects,the optimal strengthening scheme was obtained.