高速公路长陡下坡路段护栏等级设置方法研究

Study on Highway Long- steep Down- gradient Road Section Guardrail Level Setting Method

通过对长陡下坡路段事故率预测、事故风险等级评估,得出路侧护栏设置等级的方法;在对中央分隔带护栏防护目标确定的条件下,对不同设计速度情况下,得出中央分隔带护栏事故率预测值,结合防护目标确定中央分隔带护栏的设置等级。

Through accident rate prediction and accident risk level assessment on long - steep down - gradient road section, we worked out method of roadside guardrail setting level. Under condition of certain medial divider guardrail protection target and different designed speed, we have worked out medial divider guardrail aceident rate prediction and determined medial divider guardrail setting level by combining with protection target.