论文部分内容阅读
该文对沥青路面修复处的强度弱化机理作了较为深入的研究。结果表明:修复体与原路面结构体之间的薄弱剪切面是结构体强度散失的主要原因;结构体破坏将经历两个阶段,分别为剪切面破坏阶段及修复体与原路面结构体疲劳破坏阶段。从结构强度变化的角度对第一阶段结构体的疲劳破坏过程进行了分析,并给出了结构强度数学模型;对第二阶段进行了详细的力学分析,得到修复体及原路面结构体破坏时的最大屈服强度表达式,并给出了设计时的允许剪应力表达式。将路面结构整个破坏过程分为5个连续阶段,并指出目前无法解决路面频繁破坏问题的根本原因,在此基础上提出两个有效解决途径。
This paper makes a more in-depth study on the strength weakening mechanism of asphalt pavement repair. The results show that the weak shear plane between the restoration and the original pavement structure is the main reason for the strength loss of the structure. The failure of the structure will go through two stages, namely the failure stage of the shear plane, the restoration and the original pavement structure Fatigue damage stage. The fatigue failure process of the first stage structure was analyzed from the perspective of structural strength change, and the mathematical model of structural strength was given. The second stage was analyzed in detail, and the failure of the restoration and original pavement structure was obtained The maximum yield strength expression, and gives the design of the allowable shear stress expression. The whole destruction process of pavement structure is divided into five successive stages, and the root cause of the frequent destruction of pavement is not pointed out. Based on this, two effective solutions are proposed.