Thesis
Finite element modeling of geosynthetic reinforced pavement subgrades
Washington State University
Master of Science (MS), Washington State University
2013
Handle:
https://hdl.handle.net/2376/102831
Abstract
Use of a geosynthetic as a reinforcement material in the base course layer of flexible pavement has been shown to improve the performance of flexible pavements including increased pavement service life, reduction in base course thickness, rut depth, fatigue strain, and reflective cracking. Various finite element models have been used to simulate the behavior of pavement layers under different types of loading conditions. Many of these approaches have concentrated on the prediction of the contribution of geosynthetics fibers to increased shear strength. In this study, finite element analyses are conducted using ADINA on pavement cross-sections to investigate the effects of the base layer and subgrade layer quality on the performance of reinforced pavements under monotonic loading, as well as to study the effects of the interface friction between the geosynthetics and pavement layers (base and subgrade) on the performance of flexible pavements. v The distribution of the vertical surface deflection, the horizontal displacement, and the volumetric strain under monotonic loadings for the various cases of base courses and interface friction were studied. The results show that the vertical surface deflection and the horizontal displacement improved when the interface friction between the geosynthetics and the pavement layers increased. The amount of improvement, however, was dependent on the quality of the base and the subgrade layers.
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Details
- Title
- Finite element modeling of geosynthetic reinforced pavement subgrades
- Creators
- Abdelaziz Ahmed Bohagr
- Contributors
- Balasingam Muhunthan (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Civil and Environmental Engineering, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525075901842
- Language
- English
- Resource Type
- Thesis