Study On Deformation Behavior And Development Of Module Of Stability Analysis Of Reinforced-Slope

During past two decades, the geotextile reinforcement material has made great progresses. Geotextile reinforcement materials become conventional techniques of earth structures due to its excellent material properties and various kinds. However, there are many problems with the understanding on the mechanism of reinforcement, design theory and design analysis software tools of geotextile reinforcement materials. It is urgently that study on deformation characteristics of reinforced slopes under different conditions and development of the stability analysis algorithm in the engineering field. This paper aims at the research on reinforced slope deformation characteristics and stability analysis methods, and on the basis of the limited equilibrium theory, reinforced slope stability analysis module was developed. Some progresses as followed aspects:(1)Based on the investigations of extensive research on reinforced slope model tests, the local monitoring, numerical simulation and limited equilibrium methods, the summary of existed laws and problems was drew.(2)By employing FEM, the influence of reinforcement position, reinforcement layers, reinforcement length and the modulus of the reinforcement material on the horizontal displacement of the slope are studied. The results shows that:Reinforcement concentrated in the lower part of the slope plays an important pat on the confinement effect to the horizontal displacement. To some certain extent, with the increase of the number of layers of reinforced, reinforcement length and modulus can decrease the horizontal displacement of slopes effectively.(3)Relying on the study of slope stability analysis of limited equilibrium theory reinforced slope general slice method, simplified Bishop method and Janbu method were derived. The stability of slope under different conditions was compared and analyzed by the reinforced general slice method. The analysis indicated that: with the increase of the height of the slope, reinforced tensile strength must be increased so as to ensure slope safety. When the angle between reinforcement and the horizontal direction is equal to the angle between the bottom surface of the soil and the horizontal direction, the force of the bar strip plays the biggest contribution to the sliding resistance of the slope. There will no reinforcement effect if reinforcement strips located inside the slope sliding surface.(4)In view of Zslope software platform, visualized reinforced slope stability analysis module was developed. The effectiveness of the proposed method is verified by SLIDE software examples and Zornberg centrifuge model test results. The influence of reinforced position, spacing, reinforcement length and tensile strength on the critical slip surface and safety factor of slopes is studied by self-developed calculation module of the reinforced slope. Depending on analysis of the calculation results, the optimization design measures of reinforced slope is proposed.