【摘要】 本文将可靠性优化设计原理引入公路水泥混凝土路面结构的计算分析,对于确定路面结构的设计可靠度水平,提供了基本可行的和较为完善的方法。在建立可靠性优化模型时,采用了有限元应力计算回归方程,以及失效概率函数的 Hasting 近似式,从而减少计算时间、求解方便。最后,本文根据优化分析,以及现有路面可靠度—路况调查结果,给出了公路水泥混凝土路面结构设计可靠度水平的推荐值。更多还原

【Abstract】 In This paper,the reliability-optimization concept is introduced to thestructural analysis of highway cement concrete pavement and a feasible approach tothe reliability level determination is presented.The regression equation of stressresults from finite element method and approximate Hasting equation of probabilityare used in establishing the reliability-optimization model.Finally,based on thereliability-optimization analysis and the relation between reliability of existinghighway concrete pavement and pavement conditions the design reliability levels arerecommended for different traffic functions.更多还原