长寿命路面典型结构交通参数的分析与计算

Analysis and Calculation of Traffic Parameter for Typical Structure of Long-Life Pavement

交通参数的合理确定是拟建长寿命路面典型结构层厚度设计的基础.依据相关规范,考虑安全等因素,提出计算长寿命路面典型结构交通参数的一种新方法:采用公路所能适应的交通量(各种汽车折合成小客车的年平均日饱和交通量)取值范围的上限作为基本参数,结合长寿命路面在设计年限内交通量已达到饱和的特点,最后以饱和交通量计算法计算相关交通参数.计算结果表明,以该方法最终所确定的标准轴载累计当量作用次数,对于实际长寿命路面典型结构的设计具有一定的参考价值.

Reasonable determination of the transport parameter is the base of the design of typical structure of long-life pavement. According to the correlation specifications, the upper limit of adaptive scopes for saturated traffic is selected and put to use as the basic parameter. And in the design life,considering the characteristics that the traffic volumes of lcng-life pavement have already reached saturation, the saturated traffic calculation method is used to work out the relevant parameter. The method provides research thinking for traffic parameter of the typical structure of each grade planning long-life pavement. The result of calculation shows that the number of cumulative equivalent effect of standard axle load. Determined ultimately has some reference value to the practical design of the typical structure of long-life pavement.