AGS تاثير مقاومت هاي كششي ، برشي و خمشي مهارها بر پايداري شيرواني هاي مسلح شده باروش

Influence of Tensile, Shear , and Moment Resistances of Anchors on Stability of AGS Slopes

Anchored Geosynthetic Systems (AGS) is a method for stabilizing soil slopes by employing a geosynthetic fabric placed on the slope face and tensioned via anchorage to the ground. The required tension is achieved through frictional or pullout resistances of anchors that are fastened to the fabric and driven into the underlying soil mass. The developed tension and curvature of the fabric combine to compress the soil and favorably increase confining or normal stresses, i.e., shear strength, on potential failure surfaces. Unlike previous studies on AGS, the contributions of anchors on the stability are also considered in this study. The stability analysis examines Modified Bishopʹs method by incorporating the effects of AGS loads both at the slope face and the rupture surface, and the shear and bending moment strengths of anchors. A computer code is written in Visual Basic language to facilitate the analysis and also the presentation of results. The results for an example slope show that the shear and bending resistances of anchors cause small increase in the stability of AGS slope.