摘要
基于路面使用性能指标的分析,对长寿命路面组合进行了探讨。通过研究弯沉和沥青层厚度对使用性能的影响,提出合适的沥青层厚度是保证路面较好使用性能的基本保证。在保证厚度的前提下,减小弯沉才是有效的提高路面性能的途径。分析发现,对于重载交通道路,当沥青层厚度超过某一范围,其使用性能指标随交通荷载继续增大变化很小,因此验证了英国TRL关于重载交通长寿命路面厚度设计思路的正确性。
On the basis of the analysis of pavement performance indexes, the structural combination of perpetual pavement is discussed. By the research on the influence of deflection and asphalt layer thickness on pavement performance, it is concluded that appropriate asphalt layer thickness is the basic insurance on good pavement performance, and only with enough asphalt layer thickness can the reduction of deflection be an efficient way to improve pavement performance. It is also found that when the asphalt layer thickness of a heavy traffic highway exceeds a certain scope, the performance indexes changes little with the increased traffic. Thus the result validates the correctness of TRL considerations on the heavy traffic perpetual pavement thickness design.
出处
《公路》
北大核心
2007年第11期110-114,共5页
Highway
基金
国家杰出青年科学基金资助项目(50325825)
关键词
长寿命路面
使用性能
结构组合
弯沉
perpetual pavements
pavement performance
structural combination
deflection
