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以满足安全防护要求和尽可能降低成本为原则,研究开发出一种适用于山区公路的箱式填石护栏。该护栏以便于山区就地取材的片石(毛石)为护栏原材料,采用预制拼装混凝土箱体方式施工,降低了护栏施工的成本和周期。根据实车碰撞试验结果,箱式填石护栏防撞等级能够达到A级(160kJ),各项安全性能评价指标均满足相关标准要求,小客车和大货车碰撞护栏后,护栏整体结构均未损坏,减小了碰撞后护栏的维修工作量,从而可降低运营期的养护成本。通过在贵州省部分山区公路路段的实际工程应用,研究总结了箱式填石护栏的施工工艺和施工注意事项。
In order to meet the requirements of safety protection and to reduce costs as much as possible, a box-type stone-filled guardrail suitable for mountainous roads has been researched and developed. The fence to facilitate the local mountain stone (stone) for the guardrail raw materials, the use of prefabricated concrete box construction, reducing the cost and cycle barrier construction. According to the real car crash test results, the box-type rock fill barrier collision rating can reach A level (160kJ), the safety performance evaluation indicators meet the relevant standards, passenger cars and large trucks collision guardrail, the overall structure of the guardrail were not damaged , Reducing the maintenance workload of the guardrail after collision so as to reduce the maintenance cost during the operation period. Through the practical engineering application in the mountainous sections of some mountainous areas in Guizhou Province, the construction technology and construction precautions of the box-type rockfill are summarized.