Simple design models for bearing ratio of sand reinforced using different geosynthetics

  • Elif CicekEmail author
  • Erol Guler
  • Temel Yetimoglu
Original Paper


To develop relatively simple equations for design of a reinforced pavement design model, tests were conducted. Firstly, the effects of vertical spacing of reinforcement layers and depth of the reinforced zone were investigated by using different types of geosynthetic materials. The number of the reinforcement layers was also varied to see how these material parameters influenced the results. The comprehensive results from laboratory model tests supported on a woven geotextile and different geogrids were presented. The results were compared to each other. Based on model tests, different reinforcement types showed different behaviors for different numbers of reinforcement layers and different vertical spacing of the reinforcement layers. Additionally, it was seen that the improvement obtained by reinforcing the subgrade is different for low settlement ratio values and large settlement values for different vertical spacing values. Then, new simple estimation formulas were determined for bearing ratio by regression analyses for different types of reinforcement materials.


Foundation Geosynthetic Reinforced soil 



Vertical spacing between reinforcement layers (cm)


Number of reinforcement layers


Total depth of the reinforced layer (cm)


First reinforcement depth (cm)


Length of the reinforcement (cm)


Bearing ratio


Width of the footing (cm)


Settlement value (cm)


Friction angle (°)



The first writer thanks to the Scientific and Technical Research Council of Turkey for doctorate scholarship when she was in PhD.


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Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  1. 1.Civil Engineering DepartmentHacettepe UniversityAnkaraTurkey
  2. 2.Civil Engineering DepartmentBogazici UniversityIstanbulTurkey
  3. 3.Civil Engineering DepartmentAtaturk UniversityErzurumTurkey

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