PMS Objekt vs ERAPAVE-ME : Design of pavement

Detta är en M1-uppsats från KTH/Byggteknik och design

Sammanfattning: There are two types of superstructures in superstructure design, rigid and flexible. Rigid superstructures have higher load-bearing capacity than flexible superstructures. In Sweden, rigid superstructures are used for slow and heavy traffic roads such as bus stations and parking lots. A common example of rigid superstructures is cement-bound superstructures that have cement-bound layers instead of bitumen. Flexible superstructures can be bitumen bonded layers or unbound structures.The program PMS Object (Pavement Management Systems) is used in Sweden for designing highway constructions, new as well as maintenance / reinforcement of existing highways. PMS Object is based on linear elastic theory and the calculation methods are based on analytical - empirical dimensioning method. According to TRVK, the calculation method only works for the conditions and material that the designer chose during the design process. This makes it difficult for the designer when the material is to be replaced.The National Road & Transport Research Institute "VTI" started the process to develop a new program based on multilayer elastic theory and the calculation method is based on a mechanical analytical method. This means there are more alternatives for input data in the form of climate data as well as more models for calculating traffic loads and structures compared to when using the analytical - empirical dimensioning model PMS Object.The purpose of this thesis is to compare two highway design programs, PMS Object and ERAPAVE. During this work, we have studied the models and methods on which the software is based. For three realistic roads results are presented, compared, and discussed to determine in what way the software differ.The result shows that ERAPAVE shows more output, which gives you a better overall picture of the project. The program used more in-depth data and other models than PMS object. In ERAPAVE you can calculate the track depth development for all layers. PMS assumes that the rutting comes from the terrace, not from other layers. ERAPAVE can characterize traffic in different ways as standard axels or more detailed alternatives such as WIM data and that program considers the traffic's lateral distribution and more.

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