Sensitivity Analysis of Factors Influencing Deformation Performance of Geosynthetic Reinforced Soil Abutment Based on Improved Grey Correlation Method

In order to study the influence of different factors on the deformation performance of geosynthetic reinforced soil abutment, taking the reinforced soil abutment of a project as the prototype, the improved grey correlation method is used to analyse the influence of abutment height, reinforced spacing, reinforced length, reinforced material stiffness, bridge load and filling internal friction angle on the horizontal deformation sensitivity of reinforced earth abutment structure. The results show that the reinforced distance has the most significant effect on the horizontal deformation of reinforced soil abutment, and the calculation result of grey correlation degree is 0.932, followed by abutment height, bridge load and filling internal friction angle, respectively. The stiffness and length of reinforced materials have little influence on the deformation of abutment. In the structural design of reinforced soil abutment, more attention should be paid to the influence of reinforced spacing on the structure. The research results can provide an important reference for the design and construction of reinforced soil abutment.