三款弹性层状体系理论电算程序应用技术评析

Evaluation and Analysis of Application Technologies for Three Computer Programs Based on Elastic Layer

基于弹性层状体系理论开发的沥青路面结构电算程序数量众多、应用广泛、各具特色。文中选取ELSYM5、WESLEA和EVERSTRESS这3款具有代表性的电算程序,从结构层、荷载、计算点等方面出发,讨论它们在计算轮载作用下层状沥青路面结构附加应力时应用技术层面的差异;通过一具体算例,经与解析解对比,提出并验证适用于这3款程序的一种结构层划分方式,进而阐述WESLEA和EVERSTRESS程序应用上存在的缺陷,帮助使用者合理选择电算程序,并解决其在应用这2款程序时可能的困扰。

The asphalt pavement structure computer programs developed by the elastic layer system theory has a large number of applications and unique characteristics.Selecting three representative computer programs,ELSYM5,WESLEA,and EVERSTRESS,from the perspectives of structural layer,load,and calculation points,the differences of their application technology in calculating the additional stress of the asphalt pavement structure under wheel load were discussed in depth.Through a specific case example and comparison with the analytical solutions,a structure layer partitioning method suitable for these three programs was proposed and verified.Furthermore,the shortcomings in the application of WESLEA and EVERSTRESS programs were elaborated,which helps users to choose computer programs reasonably and solve the possible difficulties in applying these two programs.