Numerical study of the influence of the interaction distance, the polymeric strips pre-tensioning, and the soil–polymeric interaction on the performance of back-to-back reinforced soil walls
This study describes the results of a series of 2D finite element method (FEM) numerical models of 6 m high back-to-back reinforced soil walls using the geotechnical software PLAXIS. These structures are used to support embankments, especially for bridge abutment approaches. The quantitative influen...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/367460 |
| Acceso en línea: | https://hdl.handle.net/2117/367460 https://dx.doi.org/10.3390/infrastructures7020022 |
| Access Level: | acceso abierto |
| Palabra clave: | Retaining walls Back-to-back walls Reinforced soil walls Soil–polymeric interaction Polymeric strip Numerical modeling Murs de contenció Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Fonaments |
| Sumario: | This study describes the results of a series of 2D finite element method (FEM) numerical models of 6 m high back-to-back reinforced soil walls using the geotechnical software PLAXIS. These structures are used to support embankments, especially for bridge abutment approaches. The quantitative influence of problem geometry, strip pre-tensioning, strip type, and surcharging on horizontal displacements, development of soil shear and plastic zones, lateral earth pressure, and reinforcement loads is presented. The numerical results demonstrate how this type of reinforced soil walls perform jointly at a certain distance of interaction between the two opposite walls. The walls of the two opposing sides clearly interact with each other when they are close enough and with an overlapping reinforcement layout. Pre-tensioning load can contribute to achieving vertical wall-facing alignment at the end of construction. Using perforated/holed strips, the tensile loads at the end of construction were reduced by about 30% due to the improved polymeric–soil interface strength and stiffness. |
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