摘要
采用三维弹塑性力学模型的有限元方法,分析了层间接触条件、轴载对路表与路基顶面弯沉、结构层最大拉应力的分布与大小、界面摩擦力与界面位移的影响.揭示了层间界面条件与路面整体性能的重要关系.分析认为,界面连续问题是半刚性沥青路面易发生早期结构病害、极易发生水损坏的关键问题.对路基工作区的深度、最大弯拉应力计算点的位置及目前的高速公路半刚性沥青路面结构超载的临界荷载给出了建议值.
The finite element method of three-dimension elasticity and plasticity mechanics model is introduced to analyze interlamination contacting conditions and the influence of axle load on road surface and subgrade surface flexure, the distribution of interlamination maximum tensile stress, the maximum friction force and transverse displacement. The important relationship between the interlamination interface conditions and the pavement ensemble performance is discussed. The analysis shows that the interface continuing problem is vital for the easy formation of structural hazards at the early stage of semi-rigid asphalt pavement and generated the water breakage forming interface deterioration. With regard to the depth of the sub-grade workspace, the position of the maximum flexural-tensile stress calculating point and the critical load of expressway semi-rigid asphalt pavement＇s overload, suggested values are given.
出处
《山东大学学报（工学版）》
CAS
2007年第3期93-99,共7页
Journal of Shandong University（Engineering Science）
关键词
半刚性沥青路面
界面
弯沉
应力
临界荷载
有限元
semi-rigid asphalt pavement
interface
flexure
stress
critical load
finite element
