摘要
本文提出了水泥混凝土路面设计参数σ_s、E_c、h、E_s、K_d和N(Ne)的概率模型,分析了我国公路水泥混凝土路面的材料性能不定性、交通预测不定性和施工不定性对路面结构可靠性的影响。最后导出了较为实用的可靠性设计方法,并给出不同交通量分级的水泥混凝土路面设计可靠度水平推荐值。
This paper presents the probabilistic models of cement concrete pavement design parameters including σ_s, E_c, h, E_s, K_d and N_e. The impact of the uncertainties of material performances, traffic—estimating and construction quality on pavement structural reliability is also analyzed. At last a practical reliability based design method and reliability levels arc recommended in this paper.
关键词
随机变量
公路
水泥混凝土
路面
random variable
equation of critical stale
reliability level
