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Influence of Reinforcement Pattern on the Performance of Geotextile-Reinforced Slopes

  • Veerabhadra M. RotteEmail author
  • Hardik V. Gajjar
Conference paper
  • 40 Downloads
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 56)

Abstract

Rapid development in infrastructure facilities in urban areas requires engineered slopes for various applications. Geotextile-reinforced slope is one of the engineered slopes that is being used more than three decades. Generally, geotextile-reinforced slopes are designed high and steep due to limited space available for the construction of slope in urban areas. Increase in height as well as slope inclination and other parameters influence the stability behavior of geotextile-reinforced slopes. In the present study, the stability of geotextile-reinforced slope (β = 80°) was carried out to understand the influence of various parameters such as: cohesion (c), angle of internal friction (ϕ), vertical spacing of geotextiles (Sv), length of geotextiles (Lg), ultimate tensile capacity of geotextile materials (Tu) and loading conditions (F). In addition, three reinforcement patterns were studied. They are: (i) gradual increase in length of geotextile from top to bottom of the slope (Pi); (ii) gradual decrease in length of geotextile from top to bottom of the slope (Pd); and (iii) uniform length of geotextile from top to bottom of the slope (Pu). In all these three cases, the total length of geotextile layers was maintained the same. The stability analysis of geotextile-reinforced slopes was performed by limit equilibrium method using OASYS SLOPE software, and Bishop slip circle method was adopted for the same. It was observed that for various reinforcement patterns (Pd, Pi and Pu), identical factor of safety can be achieved by reducing total length of geotextile up to 14%. Moreover, to achieve alike factor of safety, angle of internal friction needs to be increased less as compared to cohesion of soil.

Keywords

Slope stability Geotextile Reinforced slope Placing pattern Tensile capacity 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Institute of Infrastructure Technology Research and ManagementAhmedabadIndia

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