摘要
通过室内模拟试验,利用改制的车辙仪在标准荷载0.7MPa和重载分别为0.9,1.1,1.2和1.4MPa等5种不同的荷载作用下,对沥青玛蹄脂碎石SMA-16的抗滑性能指标摆值的衰减规律进行研究,分析摆值随轮载作用次数的变化规律.分析结果表明:在不同荷载作用下,沥青混合料的摆值都随着轮载作用次数的增加反而逐渐减少,且在轮载作用初期,摆值下降较快.随着轮载作用次数的进一步增加,摆值的衰减速率逐渐减缓,并最终趋于稳定.
By the indoor simulation tests, under the five kinds of loads, the characteristic load of 0.7 MPa, .and the heavy loads of 0.9,1.1,1.2 and 1.4 MPa, the study of the antiskid performance index pendulum value＇s attenuation pattern of asphalt stone ma- trix SMA--16 and the analysis of the pendulum valuers variation pattern with the times of the wheel load＇s influence were carried out using the improved rut. The analysis re- sults show that the pendulum value of asphalt mixtures is gradually reduced with the in- crease of the times of wheel load＇s influence. Moreover, at the beginning of the influ- ence, the pendulum value reduced more rapidly, and then with the further increase of the times of the wheel load＇s influence, the rate of the pendulum valuers decrease will slow down gradually, until it becomes steady in the end.
出处
《交通科学与工程》
2011年第3期6-10,共5页
Journal of Transport Science and Engineering
基金
国家西部交通建设科技项目(200731800003)
关键词
交通荷载
抗滑性能
摆值
轮载
衰减
traffic load
antiskid performance
pendulum value
wheel load
attenuation
