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通过开展云南省内昆石、楚大、思小高速3条不同交通轴载特征的高速公路收费站点资料搜集以及实地轴载调查;经统计分析获得上述3条高速公路轴载具有代表性的年交通量组成以及按特征轮轴类型和轮轴组合分类的各车型比例;采用加权高斯密度函数进行轴载分布多峰值形式下的曲线拟合,得到不同轴型的分布系数;最终提出云南地区代表3类不同交通轴载特征的高速公路当量轴载分布。研究成果表明,高斯分布函数能很好的拟合不同轴型轴载分布曲线;考虑不同轮轴类型、轮轴组合形式的轴载分布能代表不同高速公路的交通轴载特征,研究成果可为混合交通下沥青路面损伤分析、路面使用寿命预估提供以及其他道路运营或路面设计研究提供参考。
By carrying out data collection of highway toll stations and on-the-spot investigation of loading on expressways under three different axle load characteristics of Inner Kunlun, Chu and Sisi Expressway in Yunnan Province, the three years of representative axial load of the above three expressways were obtained through statistical analysis Traffic volume composition and the proportion of each model according to the characteristics of axle types and axle combinations; using the Gaussian density function of load distribution under multi-peak load distribution of axle load distribution to obtain the distribution coefficient of different axis type; Finally, the representative of Yunnan 3 Equivalent Axle Load Distribution of Expressway with Different Traffic Axle Load Characteristics. The research results show that the Gaussian distribution function can well fit the axle load distribution curves of different shaft types. Taking into account the axle load distribution of different axle types and wheel axle combinations can represent the traffic load characteristics of different expressways, the research results can be mixed Traffic Damage Analysis of Asphalt Pavement, Estimation of Pavement Lifetime, and Other Road Operation or Pavement Design References.