Parametric Studies of the Load Transfer Platform Reinforcement Interaction with Columns
When designing embankments on a soft ground improved with columns (rigid inclusions) and with a geosynthetically reinforced load transfer platform (LTP), the methods of determining strains in reinforcement reduce the spatial problem to a two-dimensional one, and analytical calculations are carried o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/14/4015 |
| _version_ | 1797526639103442944 |
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| author | Beata Gajewska Marcin Gajewski Zbigniew Lechowicz |
| author_facet | Beata Gajewska Marcin Gajewski Zbigniew Lechowicz |
| author_sort | Beata Gajewska |
| collection | DOAJ |
| description | When designing embankments on a soft ground improved with columns (rigid inclusions) and with a geosynthetically reinforced load transfer platform (LTP), the methods of determining strains in reinforcement reduce the spatial problem to a two-dimensional one, and analytical calculations are carried out for reinforcement strips in the directions along and across the embankment. In addition, the two-dimensional FEM models do not allow for a complete analysis of the behavior of the reinforcement material. The aim of this research was to analyze the work of the membrane in the 3D space modeling of the LTP reinforcement, depending on the interaction with the column, the shape of the column’s cap, the value of the Poisson’s ratio, the value of the stiffness of the elastic foundation (subgrade reaction k) modeling of the soft soil resistance between the columns and the load distribution over membranes that model the reinforcement. The membranes were modeled in the framework of the theory of large deformations using the finite element method and slender shell elements as three-dimensional objects. This modeling method allowed for the analysis of the behavior of the LTP reinforcement in various directions. The conducted analyses showed, among others, that in the absence of soil resistance between the columns, regardless of the shape of the cap (square, circle), the greatest strains are located near the edge of the cap in the diagonal direction between the columns. |
| first_indexed | 2024-03-10T09:33:09Z |
| format | Article |
| id | doaj.art-273502e851b5446bbbde7af02a9ba729 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T09:33:09Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-273502e851b5446bbbde7af02a9ba7292023-11-22T04:18:23ZengMDPI AGMaterials1996-19442021-07-011414401510.3390/ma14144015Parametric Studies of the Load Transfer Platform Reinforcement Interaction with ColumnsBeata Gajewska0Marcin Gajewski1Zbigniew Lechowicz2Department of Geotechnical Engineering, Institute of Civil Engineering, Warsaw University of Life Sciences, Nowoursynowska 159, 02 776 Warsaw, PolandDepartment of Strength of Materials and Theory of Elasticity and Plasticity, Institute of Building Engineering, Warsaw University of Technology, Al. Armii Ludowej 16, 00 637 Warsaw, PolandDepartment of Geotechnical Engineering, Institute of Civil Engineering, Warsaw University of Life Sciences, Nowoursynowska 159, 02 776 Warsaw, PolandWhen designing embankments on a soft ground improved with columns (rigid inclusions) and with a geosynthetically reinforced load transfer platform (LTP), the methods of determining strains in reinforcement reduce the spatial problem to a two-dimensional one, and analytical calculations are carried out for reinforcement strips in the directions along and across the embankment. In addition, the two-dimensional FEM models do not allow for a complete analysis of the behavior of the reinforcement material. The aim of this research was to analyze the work of the membrane in the 3D space modeling of the LTP reinforcement, depending on the interaction with the column, the shape of the column’s cap, the value of the Poisson’s ratio, the value of the stiffness of the elastic foundation (subgrade reaction k) modeling of the soft soil resistance between the columns and the load distribution over membranes that model the reinforcement. The membranes were modeled in the framework of the theory of large deformations using the finite element method and slender shell elements as three-dimensional objects. This modeling method allowed for the analysis of the behavior of the LTP reinforcement in various directions. The conducted analyses showed, among others, that in the absence of soil resistance between the columns, regardless of the shape of the cap (square, circle), the greatest strains are located near the edge of the cap in the diagonal direction between the columns.https://www.mdpi.com/1996-1944/14/14/4015geosyntheticsLTP reinforcementpiled embankmentsmembranes |
| spellingShingle | Beata Gajewska Marcin Gajewski Zbigniew Lechowicz Parametric Studies of the Load Transfer Platform Reinforcement Interaction with Columns Materials geosynthetics LTP reinforcement piled embankments membranes |
| title | Parametric Studies of the Load Transfer Platform Reinforcement Interaction with Columns |
| title_full | Parametric Studies of the Load Transfer Platform Reinforcement Interaction with Columns |
| title_fullStr | Parametric Studies of the Load Transfer Platform Reinforcement Interaction with Columns |
| title_full_unstemmed | Parametric Studies of the Load Transfer Platform Reinforcement Interaction with Columns |
| title_short | Parametric Studies of the Load Transfer Platform Reinforcement Interaction with Columns |
| title_sort | parametric studies of the load transfer platform reinforcement interaction with columns |
| topic | geosynthetics LTP reinforcement piled embankments membranes |
| url | https://www.mdpi.com/1996-1944/14/14/4015 |
| work_keys_str_mv | AT beatagajewska parametricstudiesoftheloadtransferplatformreinforcementinteractionwithcolumns AT marcingajewski parametricstudiesoftheloadtransferplatformreinforcementinteractionwithcolumns AT zbigniewlechowicz parametricstudiesoftheloadtransferplatformreinforcementinteractionwithcolumns |