Analysis of Geogrid Reinforced Structures with a Passive Facing System Using Different Computational Methods

Abstract

The article deals with designing and analysing a wrapped geogrid reinforced structure (GRS) with a passive facing system. The analysis has been done using analytical calculation and numerical modelling. The analytical calculations were executed using FINE Geo5 geotechnical software, and numerical modelling was executed using Plaxis 2D software. The analysis is focused mainly on comparing tension forces in geogrids and the stability of the reinforced embankment determined using both computational methods. The deformation analysis was done only using numerical modelling. The numerical modelling allowed for a more detailed analysis of the wrapped GRS. Each construction phase was modelled step by step according to an actual construction procedure. Two complex road embankments supported by GRS were modelled and analysed. The first model consisted of three GRS, which not affected each other. In the second model, the GRS at each side of the embankment influenced each other. The analysis results showed that tension forces in geogrids, determined using both computational methods, can differ significantly from each other. The stability of the reinforced embankment determined using numerical modelling was within the range of 0.87 – 1.22 of the stability determined using analytical calculation. The numerical modelling results showed that the final horizontal deformation of the passive facing is about 2.8 – 3.8 times smaller than the deformation of the wrapped GRS, which occurs during the construction of the embankment.

Tensile Force Distribution And Development Within Geogrid-Reinforced Retaining Wall

“…The objective of this study is carried out to modeling the geogrid-reinforced soil retaining wall, using the finite element method with PLAXIS 2D [12] code, in order to understand the behavior of this structure, and to evaluate the influence of some geometrical and mechanical parameters, especially on the peak tensile strength in the geogrid layers, and on the lateral displacement of the wall. For the validation of our numerical model, the results obtained in this research are compared to those obtained by [4,6,15].…”

“…The width and position of loading are one factor that changes the response of reinforced retaining wall, have been the subject of experimental and numerical works [6,[9][10][11]. [12] studied the design of geogrid reinforced road embankments with a passive facing system. Analytical calculations were performed using the geotechnical software fine Geo5 and numerical modeling was performed using the software Plaxis 2D .…”

FBG Monitoring of a Communication Paths and Roadways with a Geosynthetic Systems on Mining Heaps

“…Using the waste material of a land heap for civil engineering projects, it is necessary to create an optimal algorithm for the geotechnical research quantity and quality to determine the input data for design computations and for the model of the engineering road structure cooperation with a nonnatural subsoil with an adverse effect on the structure. Oedometric and triaxial tests, as well as direct shear testing, were carried out during the works for different optimized testing points established based on the optimization algorithm [26,27]. The obtained results made it possible to determine compressibility parameters, i.e.…”