摘要
应用落锤式弯沉盆表面弯曲指数和沥青面层底部拉应变及轴载作用次数之间的关系,研究了在轴载作用下沥青路面疲劳开裂的损坏比,并就某典型路段的实测数据分别在标准荷载作用和多级荷载作用下预测损坏比,发现在标准荷载模式和多级荷载模式作用下对沥青路面的疲劳开裂损坏比预测结果相差较大,且损坏比随时间的增长速率也不同。结果表明多级荷载作用下能切实地反映沥青路面的疲劳特性,是一种在轴载作用下预测沥青路面疲劳寿命的有效方法。
The damage rate of asphalt pavement for the fatigue performance cracking is studied with axial loading by the relationshi Pof surface cueved index with Falling Weight Deflection basin, bottom pulling strain of asphalt surface and aumbers of axial loading. The predicting result of standard axial loading and more-classified loading is very different, so as its increasing rate with the time going. It fits real circumstance to predict the fatigue character of asphalt pavement according to more-classified loading and could be an effective measurement for predicting fatigue life of asphalt pavement ruder axial loading.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第5期27-30,共4页
Journal of Chongqing University
基金
交通部西部课题(200131800095)
关键词
沥青路面
轴载
疲劳开裂
弯沉盆
损坏比
asphalt pavement
axial loading
fatigue performance cracking
deflection basin
damage rate
