摘要
柔性路面粒料基层剪切破坏是主要破坏形式,但目前对其抗剪性能没有做过理论分析.根据散体力学粒料最危险剪切滑移面不是剪应力最大的面,而是剪应力与正应力比值最大的面为理论依据提出剪应力验算公式;基于弹性层状体系理论确定了最危险剪切面位置;做出了不同路面结构最危险剪切面上的剪应力及正应力诺谟图.最后通过一柔性路面粒料基层抗剪性能验算例子,发现柔性路面粒料基层会出现剪切破坏,提出验算的必要性.
The shear strength of granule base is inferior in flexible pavement. However there is no theoretical analysis for it. Based on the mechanics of granular mixtures, the slip-shear surface is not considered the biggest of the sheer stress, the ratio of the shear stress and the normal stress is the biggest, so the formula of shear strength checking are proposed. The position of hazard slip-shear is proposed according to multi-layer elastic theory and nomograph of the shear stress and normal stress are drawn for different flexible pavement of the hazardous slip-shear surface. At last, an example of shear strength checking of granule based is presented for checking the shear strength.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2009年第5期689-693,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
关键词
柔性路面
散体力学
粒料基层
抗剪性能
Flexible pavement
mechanic of granular mixtures
granule base
shear behavior
