Analysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method

Compared with the commonest geosynthetics-reinforced soil structures, layered geogrids–sand–clay reinforced (LGSCR) structures (School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China) can replace granular materials with clay as the primary backfill ma...

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Autores principales:	Lan Cui, Wenzhao Cao, Qian Sheng, Mingxing Xie, Tao Yang, Ping Xiao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	geosynthetics clay discrete element method triaxial compression test shear strength Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/6cf017cee7934147be7cd84ae865213d
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spelling	oai:doaj.org-article:6cf017cee7934147be7cd84ae865213d2021-11-11T15:02:32ZAnalysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method10.3390/app112199522076-3417https://doaj.org/article/6cf017cee7934147be7cd84ae865213d2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/9952https://doaj.org/toc/2076-3417Compared with the commonest geosynthetics-reinforced soil structures, layered geogrids–sand–clay reinforced (LGSCR) structures (School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China) can replace granular materials with clay as the primary backfill material. Up until now, the performance of LGSCR structures under triaxial compression has been unclear. In this paper, the discrete element method was used to simulate the triaxial compression test on the LGSCR samples. Based on the particle flow software PFC<sup>3D</sup>, three types of cluster particle-simulated sand and the reinforced joints of the geogrid were constructed by secondary development. The effects of the geogrid embedment in sand layers, the number and thickness of sand layers in relation to the deviatoric stress, and the axial strain and the shear strength index of the LGSCR samples were analyzed. The results showed that laying the sand layers in the samples can improve their post-peak strain-softening characteristics and increase their peak strengths under a high confining pressure. A geogrid embedment in sand layers can further enhance the ductility and peak strength of the samples, and in terms of the shear strength index, there is a 41.6% to 54.8% increase in the apparent cohesion of the samples.Lan CuiWenzhao CaoQian ShengMingxing XieTao YangPing XiaoMDPI AGarticlegeosyntheticsclaydiscrete element methodtriaxial compression testshear strengthTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 9952, p 9952 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	geosynthetics clay discrete element method triaxial compression test shear strength Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	geosynthetics clay discrete element method triaxial compression test shear strength Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Lan Cui Wenzhao Cao Qian Sheng Mingxing Xie Tao Yang Ping Xiao Analysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method
description	Compared with the commonest geosynthetics-reinforced soil structures, layered geogrids–sand–clay reinforced (LGSCR) structures (School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China) can replace granular materials with clay as the primary backfill material. Up until now, the performance of LGSCR structures under triaxial compression has been unclear. In this paper, the discrete element method was used to simulate the triaxial compression test on the LGSCR samples. Based on the particle flow software PFC<sup>3D</sup>, three types of cluster particle-simulated sand and the reinforced joints of the geogrid were constructed by secondary development. The effects of the geogrid embedment in sand layers, the number and thickness of sand layers in relation to the deviatoric stress, and the axial strain and the shear strength index of the LGSCR samples were analyzed. The results showed that laying the sand layers in the samples can improve their post-peak strain-softening characteristics and increase their peak strengths under a high confining pressure. A geogrid embedment in sand layers can further enhance the ductility and peak strength of the samples, and in terms of the shear strength index, there is a 41.6% to 54.8% increase in the apparent cohesion of the samples.
format	article
author	Lan Cui Wenzhao Cao Qian Sheng Mingxing Xie Tao Yang Ping Xiao
author_facet	Lan Cui Wenzhao Cao Qian Sheng Mingxing Xie Tao Yang Ping Xiao
author_sort	Lan Cui
title	Analysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method
title_short	Analysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method
title_full	Analysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method
title_fullStr	Analysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method
title_full_unstemmed	Analysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method
title_sort	analysis of layered geogrids–sand–clay reinforced structures under triaxial compression by discrete element method
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6cf017cee7934147be7cd84ae865213d
work_keys_str_mv	AT lancui analysisoflayeredgeogridssandclayreinforcedstructuresundertriaxialcompressionbydiscreteelementmethod AT wenzhaocao analysisoflayeredgeogridssandclayreinforcedstructuresundertriaxialcompressionbydiscreteelementmethod AT qiansheng analysisoflayeredgeogridssandclayreinforcedstructuresundertriaxialcompressionbydiscreteelementmethod AT mingxingxie analysisoflayeredgeogridssandclayreinforcedstructuresundertriaxialcompressionbydiscreteelementmethod AT taoyang analysisoflayeredgeogridssandclayreinforcedstructuresundertriaxialcompressionbydiscreteelementmethod AT pingxiao analysisoflayeredgeogridssandclayreinforcedstructuresundertriaxialcompressionbydiscreteelementmethod
_version_	1718437319940243456

Analysis of Layered Geogrids–Sand–Clay Reinforced Structures under Triaxial Compression by Discrete Element Method

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