摘要
往返轮载试验模拟车轮运动状态对试件进行疲劳加载,可以很好地反映路面受力实际状态。本文应用沥青路面分析仪(APA)对沥青混凝土梁式试件进行多种荷载下的往返轮载疲劳试验,研究沥青混凝土的疲劳性能,并回归出有关的疲劳方程。同时对比研究土工布、玻璃纤维格栅对沥青混凝土疲劳性能的加筋效果。试验结果表明,这些加筋措施能将沥青混凝土梁式试件疲劳寿命延长一倍左右。
In wheel repeated loading test,the loading wheel along a line is used to simulate the vehicle wheel to act on the specimen repeatedly.So it can exactly reflect the real loading situation of loading on pavement.In this paper,wheel repeated loading test is carried out on the asphalt concrete beam specimen under several loading levels by using Asphalt Pavement Analyzer (APA) to study the fatigue characteristics of asphalt concrete,and the fatigue equation.At the same time,the reinforcing effect of fabric and glassgrid on the fatigue characteristics of asphalt concrete are compared.The results show that the reinforcing measures can prolong the fatigue life of asphalt concrete beam specimen by two times.
出处
《公路交通科技》
CAS
CSCD
北大核心
2005年第3期24-27,共4页
Journal of Highway and Transportation Research and Development
基金
湖南省自然科学基金项目(04JJ30035)
