界面条件对半刚性沥青路面结构应力分布的影响  

The influence analysis of the semi-rigid asphalt pavement configuration stress and distortion by interface conditions

作　　者：姚占勇[1] 商庆森[1] 赵之仲[2] 贾朝霞[3] 

机构地区：[1]山东大学土建与水利学院,山东济南250061 [2]山东交通学院公路系,山东济南250032 [3]山东建筑工程大学土木系,山东济南250061

出　　处：《山东大学学报（工学版）》2007年第3期93-99,共7页Journal of Shandong University（Engineering Science）

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.

关 键 词：半刚性沥青路面 界面 弯沉 应力 临界荷载 有限元 

分 类 号：U416.01[交通运输工程—道路与铁道工程]