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我国在低等级公路建设、养护中因地制宜应用了一些低造价、非标准的安全防护设施。一种低强度水泥混凝土材质的示警桩即是其中的一种,其在我国低等级公路上广泛设置于路侧用以警示或诱导。示警桩使用的历史至少20年,但其并没有经过应用效果评估。本文结合低等级公路安全改善工程,通过实地观测对比分析了施工前后机动车运行速度和行驶轨迹的变化特征,对其进行了定性和定量化评价,并提出现有示警桩设置的优化建议,为我国低等级公路安全改善提供理论支持。
In the construction and maintenance of low-grade highways in our country, some low-cost and non-standard safety protection facilities have been applied according to local conditions. A kind of low-intensity cement concrete warning piles is one of them, which is widely set on the road side in China’s low-grade highways for warning or induction. The police station has been used for at least 20 years but has not been evaluated for its effectiveness. Combining with the improvement of low grade highway safety project, the change characteristics of vehicle running speed and driving track before and after construction are compared and analyzed through field observation, and the qualitative and quantitative evaluation of the project is made. Finally, China’s low-grade highway safety improvement to provide theoretical support.