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现有避险车道的路床集料类型、铺设厚度、坡度与长度等数据一般根据经验与当地环境选取,缺乏可靠性。近年来出现了不少因为避险车道长度不足导致失控车辆冲出端部的事故,造成了严重的人员和财产损失。本文通过分析可能影响避险车道填充集料阻力性能的因素,找到敏感性因素,结合理论分析与实车运行试验数据,建立了针对20~40mm粒径砾石集料的阻力计算模型。该模型可用于指导采用20~40mm粒径砾石集料的避险车道的设计,并可参照此方法建立其它集料的阻力性能计算模型。
The existing types of roadbed aggregate types, laying thickness, slope and length of the existing safe lane are generally based on experience and local environment, lacking in reliability. In recent years, there have been quite a few incidents of out-of-control vehicles running out of the end due to the shortage of safe haven lanes, causing serious human and property losses. By analyzing the factors that may affect the resistance performance of the hedged lane-filled aggregates, this paper finds out the sensitivity factors, and combined with the theoretical analysis and actual vehicle running test data, establishes the resistance calculation model for 20 ~ 40mm gravel aggregates. The model can be used to guide the design of hedging lanes with 20 ~ 40mm gravel aggregate, and can be used to establish the resistance performance calculation model of other aggregates.