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Influence of Strengthened Nodes on the Mechanical Performance of Aeolian Sand–Geogrid Interface
Node thickening is a way to strengthen the nodes of a geogrid. Increasing the node thickness in conventional biaxial geogrids enhances the interface frictional strength parameters and improves its three-dimensional reinforcement effect. Based on the triaxial tests of aeolian sand, single-rib strip t...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10342616/ https://www.ncbi.nlm.nih.gov/pubmed/37444977 http://dx.doi.org/10.3390/ma16134665 |
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author | Du, Wei Nie, Rusong Tan, Yongchang Zhang, Jie Qi, Yanlu Zhao, Chunyan |
author_facet | Du, Wei Nie, Rusong Tan, Yongchang Zhang, Jie Qi, Yanlu Zhao, Chunyan |
author_sort | Du, Wei |
collection | PubMed |
description | Node thickening is a way to strengthen the nodes of a geogrid. Increasing the node thickness in conventional biaxial geogrids enhances the interface frictional strength parameters and improves its three-dimensional reinforcement effect. Based on the triaxial tests of aeolian sand, single-rib strip tests of geogrids, and pull-out tests of geogrid in aeolian sand, a three-dimensional discrete element pull-out model for geogrids with strengthened nodes was developed to investigate the mechanical performance of an aeolian sand–geogrid interface. The influences of increasing node thickness, the number of strengthened nodes, and the spacing between adjacent nodes on the mechanical performance of the geogrid–soil interface were extensively studied used the proposed model. The results demonstrated that strengthened nodes effectively optimize the reinforcing performance of the geogrid. Among the three node-thickening methods, that in which both the upper and lower sides of nodes are thickened showed the most significant improvement in ultimate pull-out resistance and interface friction angle. Moreover, when using the same node-thickening method, the ultimate pull-out resistance increase shows a linear relationship with the node thickness increase and the strengthened node quantity. In comparison with the conventional geogrid, the strengthened nodes in a geogrid lead to a wider shear band and a stronger ability to restrain soil displacement. When multiple strengthened nodes are simultaneously applied, there is a collective effect that is primarily influenced by the spacing between adjacent nodes. The results provide a valuable reference for optimizing the performance of geogrids and determining the spacing for geogrid installation. |
format | Online Article Text |
id | pubmed-10342616 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103426162023-07-14 Influence of Strengthened Nodes on the Mechanical Performance of Aeolian Sand–Geogrid Interface Du, Wei Nie, Rusong Tan, Yongchang Zhang, Jie Qi, Yanlu Zhao, Chunyan Materials (Basel) Article Node thickening is a way to strengthen the nodes of a geogrid. Increasing the node thickness in conventional biaxial geogrids enhances the interface frictional strength parameters and improves its three-dimensional reinforcement effect. Based on the triaxial tests of aeolian sand, single-rib strip tests of geogrids, and pull-out tests of geogrid in aeolian sand, a three-dimensional discrete element pull-out model for geogrids with strengthened nodes was developed to investigate the mechanical performance of an aeolian sand–geogrid interface. The influences of increasing node thickness, the number of strengthened nodes, and the spacing between adjacent nodes on the mechanical performance of the geogrid–soil interface were extensively studied used the proposed model. The results demonstrated that strengthened nodes effectively optimize the reinforcing performance of the geogrid. Among the three node-thickening methods, that in which both the upper and lower sides of nodes are thickened showed the most significant improvement in ultimate pull-out resistance and interface friction angle. Moreover, when using the same node-thickening method, the ultimate pull-out resistance increase shows a linear relationship with the node thickness increase and the strengthened node quantity. In comparison with the conventional geogrid, the strengthened nodes in a geogrid lead to a wider shear band and a stronger ability to restrain soil displacement. When multiple strengthened nodes are simultaneously applied, there is a collective effect that is primarily influenced by the spacing between adjacent nodes. The results provide a valuable reference for optimizing the performance of geogrids and determining the spacing for geogrid installation. MDPI 2023-06-28 /pmc/articles/PMC10342616/ /pubmed/37444977 http://dx.doi.org/10.3390/ma16134665 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Du, Wei Nie, Rusong Tan, Yongchang Zhang, Jie Qi, Yanlu Zhao, Chunyan Influence of Strengthened Nodes on the Mechanical Performance of Aeolian Sand–Geogrid Interface |
title | Influence of Strengthened Nodes on the Mechanical Performance of Aeolian Sand–Geogrid Interface |
title_full | Influence of Strengthened Nodes on the Mechanical Performance of Aeolian Sand–Geogrid Interface |
title_fullStr | Influence of Strengthened Nodes on the Mechanical Performance of Aeolian Sand–Geogrid Interface |
title_full_unstemmed | Influence of Strengthened Nodes on the Mechanical Performance of Aeolian Sand–Geogrid Interface |
title_short | Influence of Strengthened Nodes on the Mechanical Performance of Aeolian Sand–Geogrid Interface |
title_sort | influence of strengthened nodes on the mechanical performance of aeolian sand–geogrid interface |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10342616/ https://www.ncbi.nlm.nih.gov/pubmed/37444977 http://dx.doi.org/10.3390/ma16134665 |
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