柔性路面轴载换算式在北京地区的验证与补充

The Verification of and addition to the Equivalent Axle Loading Conversion Formula for Flexible Pavement Based on Beijing's Pavement Data

近年来,随着公路等级的提高,公路建筑材料发生了很大的变化,轴载换算公式的适用性需要进一步检验。本文以北京郊区公路的路况调查资料为基础,对现行规范中的轴载换算公式进行了验证和补充。研究结果表明,规范中的轴载换算式对碎砾石基层路面具有很好的适用性,但不宜用于半刚性基层路面的轴载换算,不同路面损坏状态下的轴载换算系数各不相同。通过研究,本文给出了北京地区半刚性基层路面轴载换算的建议公式。

As the results of highway upgrading and the development of road building materials,the further verification of the suitability of the equivalent axle loading conversion formula should be emphasized.Based on the rural pavement data from the data bank of Beijing's Department of Highway,this paper studied the suitability of axle loading conversion formula specified in Chinese current specifica. tions.The research results showed that the formula is adaptable to flexible pave- ments with granular base but not to those with semi-rigid base,and that the loading conversion factors are different in different types of pavement failures.Finally,the equivalent conversion formula for pavement with semi-rigid base in Beijing area is propsed in this paper.