摘要
针对不同的路基回弹模量,采用BISAR3.0路面应力计算程序,分析了路表弯沉、面层内剪应力与压应力、基层底拉应力等沥青路面结构受力参数伴随路基回弹模量变化的趋势。分析结果表明:路基回弹模量对路表弯沉和基层底拉应力影响比较大,对面层剪应力和压应力影响较小,较高的路基回弹模量可有效提高路面的结构承载力和疲劳寿命,改善路面使用性能。
Aimed at different subgrade resilient modulus, using BISAR 3.0 pavement stress calculation program, analyzed the change tendency of asphalt pavement structure parameters such as road surface deflection, surface course shear stress, compressive stress and basic level bottom tensile stress along with subgrade resilient modulus. The analysis results show that the affect of subgrade resilient modulus on road surface deflection and basic level bottom tensile stress is bigger, on surface shear stress and compressive stress is lesser, high subgrade resilient modulus can effectively improve the bearing capacity and fatigue life of pavement structure, improve the pavement performance.
出处
《内蒙古公路与运输》
2013年第4期4-6,共3页
Highways & Transportation in Inner Mongolia
关键词
路基回弹模量
路面性能
应力分析
subgrade resilient modulus
pavement performance
stress analysis
