Stability Analysis of Filled-Slope Reinforced by Frame with Prestressed Anchor-Plates under Static Action

Stability Analysis of Filled-Slope Reinforced by Frame with Prestressed Anchor-Plates under Static Action

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Because of the current situation where the stability research of filled-slope reinforced by a frame with prestressed anchor-plates lags behind the actual engineering application, based on the ultimate balance theory, the calculation formulas of stability factor under the four arc slip surface of filled-slopes reinforced by a frame with prestressed anchor-plates are derived by using the improved Bishop method; the corresponding search method of the most dangerous slip surface is given and the calculation formulas of the pullout force of anchor-plates are improved.Based on two examples, the stability results calculated by the proposed algorithm are compared with Redesign-A1 Fiber those calculated by PLAXIS 3D and GeoStudio 2012 finite element software, and the following conclusions are drawn.(1) The improved pullout force of anchor-plates takes into account the friction of the front and rear surface of the anchor-plate and the effect of cohesion of fill soil in the passive earth pressure on the front end of the anchor-plate, which makes the force of the anchor-plate more complete.

(2) The stability factor of example 1 calculated by this method differs from the results simulated by PLAXIS 3D and GeoStudio 2012 by 4.6% and 7.1%, respectively; the stability factor of example 2 calculated by this method differs from the results simulated by PLAXIS3D and GeoStudio 2012 by 3.

2% and 4.5%, respectively, which can meet the engineering requirements.(3) The stability analysis method of filled-slope reinforced by a frame with prestressed anchor-plates that is proposed is reasonable and suitable for any arc slip surface in Side/Coffee Table the filled-slope reinforced by a frame with prestressed anchor-plates, and it provides some guiding values for the design of practical engineering.