沥青路面现场疲劳方程的环境影响系数

Environment Influence Coefficients of Field Fatigue Equations for Asphalt Pavements

目前国内外对沥青路面疲劳方程的研究基本上都是基于室内疲劳试验的结果,没有很好地考虑环境因素的影响.事实上,不同环境地区沥青路面的疲劳寿命是有很大差别的.为此,利用先前建立的沥青路面结构行为方程,从新的角度考虑现场疲劳方程的建立,通过大量的计算分析给出沥青路面现场疲劳方程的环境因素影响系数(函数),为在路面疲劳分析时考虑环境因素的影响提供了可能.

The domestic and foreign study on fatigue equation of asphalt pavements is mostly based on the laboratory results without taking environmental factors into consideration. In fact, the fatigue life of asphalt pavement varies a lot in different environmental areas. So a fresh idea is introduced into building the field fatigue equation based on the former research of asphalt pavement structural behavior. Then the coefficient （function） of environmental factor is determined for field fatigue equation through a large amount of computational analysis. And the result provides a possibility for analyzing the pavement fatigue performance by taking environment into consideration.