西南交通大学学报（社会科学版）Issue(4)：682-686,5.DOI:10.3969/j.issn.0258-2724.2014.04.019
考虑层间状态的沥青面层动应变疲劳数值分析
Numerical Analysis of Dynamic Strain and Fatigue Characteristics of Asphalt Layer Considering Interlayer Condition
摘要
Abstract
In order to determine the relationship between the fatigue life of asphalt layer and its influencing factors such as interlayer contact state,temperature,and axle load,a numerical calculation model of asphalt pavement was built based on the interlayer conditions by using the ABAQUS software. Through this model,the influence of these factors on the dynamic strain of the asphalt layer was analyzed. Then,the conventional fatigue life model of asphalt pavement was introduced to construct general fatigue equations for the asphalt layer of semi-rigid asphalt pavement or ultra-thin pavement subjected to multiple factors,and the correlation of fatigue life with the influencing factors and the most unfavorable point were determined. The results show that the interlayer bonding coefficient, temperature,and axle load all have significant effect on the fatigue life of asphalt layer,but the effect differs at different calculation points. Strengthening the interlayer bonding condition can improve the fatigue life of the asphalt layer:at the most unfavorable point,when the interlayer bonding coefficient is improved from 0. 5 to 0. 7,the fatigue life is increased by 13. 6 times.关键词
沥青面层/层间接触状态/动应变/疲劳特性/关联分析Key words
asphalt layer/interlayer contact condition/dynamic strain/fatigue characteristic/correlation analysis分类
交通工程引用本文复制引用
黄兵,艾长发,阳恩慧,成猛..考虑层间状态的沥青面层动应变疲劳数值分析[J].西南交通大学学报（社会科学版）,2014,(4):682-686,5.基金项目
国家自然科学基金资助项目（51378433）；四川省交通厅科技资助项目（SC2008．1-3-1）；中央高校基本科研业务费专项资金资助项目 （）
