Parametric Studies of the Load Transfer Platform Reinforcement Interaction with Columns
| Autor: | Beata Gajewska, Zbigniew Lechowicz, Marcin Gajewski |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Diagonal 0211 other engineering and technologies Shell (structure) 02 engineering and technology Edge (geometry) Article 021105 building & construction medicine General Materials Science piled embankments Reinforcement geosynthetics LTP reinforcement membranes 021101 geological & geomatics engineering Parametric statistics Microscopy QC120-168.85 business.industry QH201-278.5 Stiffness Structural engineering Engineering (General). Civil engineering (General) Finite element method TK1-9971 Descriptive and experimental mechanics Electrical engineering. Electronics. Nuclear engineering TA1-2040 medicine.symptom Geosynthetics business |
| Zdroj: | Materials; Volume 14; Issue 14; Pages: 4015 Materials, Vol 14, Iss 4015, p 4015 (2021) Materials |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14144015 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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