高速公路中央分隔带组合式护栏方案研究

Study on Schemes for New Double-beams Highway Guardrails

针对国内某高速中央分隔带护栏升级改造问题,提出了中央隔离带组合式护栏方案,建立了组合式护栏的三维汽车—护栏碰撞仿真模型,并针对不同的护栏立柱间距进行了汽车碰撞仿真模拟研究。结果表明,利用中央隔离带旧护栏改造为组合式护栏满足规范要求,可以有效地降低成本,为高速公路中央分隔带护栏改造提供依据。

For the problem that the upgrade issue of domestic high-speed central median guardrail, a new double-beams highway guardrails was proposed. The 3D collision model of guardrail and vehicle was created, and the collisions in different column？spacing are simulated. The results indicated that the new double-beams highway guardrail which has lower cost and barrier recycle meets regulatory requirements. It provides the basis for reconstruction on China＆#39;s central highway and can be applied in our country’ s expressway barrier reconstruct.