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Feasibility Study on the Bamboo Grid Instead of Geogrid for Soil–Rock Mixture Subgrade Reinforcing

To promote the application of the bamboo grid in the soil–rock mixture subgrade in mountain areas, the mechanical properties of bamboo reinforcement were investigated in this study, and the reinforcement effect and interface characteristics of uniaxial/biaxial bamboo grid on the soil–rock mixture un...

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Autores principales: Hu, Yong, Chen, Shanling, Xie, Cekun, Zhong, Weilin, Yin, Hongda, Luo, Zhengdong, Luo, Biao, Liang, Bin, He, Min, Huang, Junjie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231051/
https://www.ncbi.nlm.nih.gov/pubmed/35744120
http://dx.doi.org/10.3390/ma15124047
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author Hu, Yong
Chen, Shanling
Xie, Cekun
Zhong, Weilin
Yin, Hongda
Luo, Zhengdong
Luo, Biao
Liang, Bin
He, Min
Huang, Junjie
author_facet Hu, Yong
Chen, Shanling
Xie, Cekun
Zhong, Weilin
Yin, Hongda
Luo, Zhengdong
Luo, Biao
Liang, Bin
He, Min
Huang, Junjie
author_sort Hu, Yong
collection PubMed
description To promote the application of the bamboo grid in the soil–rock mixture subgrade in mountain areas, the mechanical properties of bamboo reinforcement were investigated in this study, and the reinforcement effect and interface characteristics of uniaxial/biaxial bamboo grid on the soil–rock mixture under different vertical loads was comparatively analyzed. The results show that the tensile force (2% elongation) of the bamboo reinforcement is 50.21 kN/m, and its average tensile strength is 236.01 MPa. Moreover, bamboo reinforcement has excellent shear and flexural properties. In general, the reinforcement effect of the biaxial bamboo grid on the soil–rock mixed subgrade is better than that of the uniaxial bamboo grid. In the case of using a uniaxial bamboo grid, its pull-out curve is generally a strain-softening type. As for the biaxial bamboo grid, due to the existence of bite force, its pull-out curve usually presents a strain-hardening type. Compared with the uniaxial bamboo grid, the friction coefficient of the reinforcement–soil interface using the biaxial bamboo grid is higher, and the interfacial shear stress is increased by 72.2–91.2%.
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spelling pubmed-92310512022-06-25 Feasibility Study on the Bamboo Grid Instead of Geogrid for Soil–Rock Mixture Subgrade Reinforcing Hu, Yong Chen, Shanling Xie, Cekun Zhong, Weilin Yin, Hongda Luo, Zhengdong Luo, Biao Liang, Bin He, Min Huang, Junjie Materials (Basel) Article To promote the application of the bamboo grid in the soil–rock mixture subgrade in mountain areas, the mechanical properties of bamboo reinforcement were investigated in this study, and the reinforcement effect and interface characteristics of uniaxial/biaxial bamboo grid on the soil–rock mixture under different vertical loads was comparatively analyzed. The results show that the tensile force (2% elongation) of the bamboo reinforcement is 50.21 kN/m, and its average tensile strength is 236.01 MPa. Moreover, bamboo reinforcement has excellent shear and flexural properties. In general, the reinforcement effect of the biaxial bamboo grid on the soil–rock mixed subgrade is better than that of the uniaxial bamboo grid. In the case of using a uniaxial bamboo grid, its pull-out curve is generally a strain-softening type. As for the biaxial bamboo grid, due to the existence of bite force, its pull-out curve usually presents a strain-hardening type. Compared with the uniaxial bamboo grid, the friction coefficient of the reinforcement–soil interface using the biaxial bamboo grid is higher, and the interfacial shear stress is increased by 72.2–91.2%. MDPI 2022-06-07 /pmc/articles/PMC9231051/ /pubmed/35744120 http://dx.doi.org/10.3390/ma15124047 Text en © 2022 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
Hu, Yong
Chen, Shanling
Xie, Cekun
Zhong, Weilin
Yin, Hongda
Luo, Zhengdong
Luo, Biao
Liang, Bin
He, Min
Huang, Junjie
Feasibility Study on the Bamboo Grid Instead of Geogrid for Soil–Rock Mixture Subgrade Reinforcing
title Feasibility Study on the Bamboo Grid Instead of Geogrid for Soil–Rock Mixture Subgrade Reinforcing
title_full Feasibility Study on the Bamboo Grid Instead of Geogrid for Soil–Rock Mixture Subgrade Reinforcing
title_fullStr Feasibility Study on the Bamboo Grid Instead of Geogrid for Soil–Rock Mixture Subgrade Reinforcing
title_full_unstemmed Feasibility Study on the Bamboo Grid Instead of Geogrid for Soil–Rock Mixture Subgrade Reinforcing
title_short Feasibility Study on the Bamboo Grid Instead of Geogrid for Soil–Rock Mixture Subgrade Reinforcing
title_sort feasibility study on the bamboo grid instead of geogrid for soil–rock mixture subgrade reinforcing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231051/
https://www.ncbi.nlm.nih.gov/pubmed/35744120
http://dx.doi.org/10.3390/ma15124047
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