北京市柔性路面设计方法和参数的研究

Research on the Beijing Flexible Pavement Design Method andParameters

柔性路面设计方法与参数是道路设计中的一个重要方面。为了配合“城市道路设计规范”的编制,并结合北京市具体情况进行了较长时期的研究工作。文章研究了弯沉、弯拉及高温剪切三个控制指标,尤其是对半刚性基层的计算进行了新的探索。此外,对北京市的交通情况及横向分布系数进行了观测与资料分析,系统研究了北京市的土基、材料的特性,取得了参数;利用室内环道用九种不同结构组合对上述指标及参数进行综合验证。目前该成果已用于北京市的路面设计中。

The flexible pavement design method and parameters are important in road design. According to Beijing' s condition, a long term research work have been done for supporting the compile of ' Urban Road Design Standard' .In this paper, three indexes have been studied: deflection tensile strain and high temperature shear in asphalt concrete pavement . Especially, the calculation of semi- rigid subbase is studied tentatively.Furthormore, this paper provides the information on observing and analysing the traffic data and vehicle transverse distribution factors, and texts the charactrictics of soil foundation and matrial, and gain system parameters.In addition text has been completed with circular test track by nine different construction compositions.Up to now, the conclusion have been used for flexible pavement design in Beijing.