Stability Analysis of Ecological Slopes Based on a 3D Finite Element Model

To explore the effect of grass and shrub plant roots on the stability of soil slopes in rainy areas in the south, this article relies on the Longlang Expressway construction project. Cynodon dactylon and Magnolia multiflora were selected as research subjects. The plant distribution characteristics a...

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Autores principales:	ZiFan Sui, Weijia Yuan, Wen Yi, Weihuan Yang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/cabf6521de5b406cb2406ab84c134bee
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spelling	oai:doaj.org-article:cabf6521de5b406cb2406ab84c134bee2021-11-15T01:19:44ZStability Analysis of Ecological Slopes Based on a 3D Finite Element Model1687-844210.1155/2021/3785943https://doaj.org/article/cabf6521de5b406cb2406ab84c134bee2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/3785943https://doaj.org/toc/1687-8442To explore the effect of grass and shrub plant roots on the stability of soil slopes in rainy areas in the south, this article relies on the Longlang Expressway construction project. Cynodon dactylon and Magnolia multiflora were selected as research subjects. The plant distribution characteristics and mechanical properties are analyzed. This paper uses ABAQUS finite element software to construct a 3D model of the planted slope in the test section. The stress and strain on the root system and the soil were observed, and the variation law of slope stability before and after plant protection under different rainfall events was compared and analyzed. The test and simulation results show that the root content of Cynodon dactylon gradually decreases with increasing depth. Cynodon dactylon was mainly distributed in the 0–30 cm soil body, and its effect on improving the cohesion of the soil body reached 75%. Magnolia multiflora belongs to vertical roots and has a strong and longer main root with relatively developed lateral roots. Its root system passes through the sliding surface of the slope bottom, which reduces the maximum equivalent plastic stress generated inside the slope by 61%. When the total rainfall duration is unchanged, under the three rainfall intensities of small, medium, and large, herbaceous plants increase the safety factor of the soil by 1.33%, 2.08%, and 6.1%, respectively, and the roots of shrubs increase the safety factor of the soil by 3.29%, 4.08%, and 4.32%, respectively. When the rainfall intensity does not change, as the rainfall time increases, the effect of plants on the slope safety factor first gradually increases and eventually stabilizes. The research results provide a reliable theoretical basis for analyzing the effect of plant roots on soil consolidation and slope protection, and they also lay a technical foundation for the promotion and application of ecological slope protection technology.ZiFan SuiWeijia YuanWen YiWeihuan YangHindawi LimitedarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENAdvances in Materials Science and Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 ZiFan Sui Weijia Yuan Wen Yi Weihuan Yang Stability Analysis of Ecological Slopes Based on a 3D Finite Element Model
description	To explore the effect of grass and shrub plant roots on the stability of soil slopes in rainy areas in the south, this article relies on the Longlang Expressway construction project. Cynodon dactylon and Magnolia multiflora were selected as research subjects. The plant distribution characteristics and mechanical properties are analyzed. This paper uses ABAQUS finite element software to construct a 3D model of the planted slope in the test section. The stress and strain on the root system and the soil were observed, and the variation law of slope stability before and after plant protection under different rainfall events was compared and analyzed. The test and simulation results show that the root content of Cynodon dactylon gradually decreases with increasing depth. Cynodon dactylon was mainly distributed in the 0–30 cm soil body, and its effect on improving the cohesion of the soil body reached 75%. Magnolia multiflora belongs to vertical roots and has a strong and longer main root with relatively developed lateral roots. Its root system passes through the sliding surface of the slope bottom, which reduces the maximum equivalent plastic stress generated inside the slope by 61%. When the total rainfall duration is unchanged, under the three rainfall intensities of small, medium, and large, herbaceous plants increase the safety factor of the soil by 1.33%, 2.08%, and 6.1%, respectively, and the roots of shrubs increase the safety factor of the soil by 3.29%, 4.08%, and 4.32%, respectively. When the rainfall intensity does not change, as the rainfall time increases, the effect of plants on the slope safety factor first gradually increases and eventually stabilizes. The research results provide a reliable theoretical basis for analyzing the effect of plant roots on soil consolidation and slope protection, and they also lay a technical foundation for the promotion and application of ecological slope protection technology.
format	article
author	ZiFan Sui Weijia Yuan Wen Yi Weihuan Yang
author_facet	ZiFan Sui Weijia Yuan Wen Yi Weihuan Yang
author_sort	ZiFan Sui
title	Stability Analysis of Ecological Slopes Based on a 3D Finite Element Model
title_short	Stability Analysis of Ecological Slopes Based on a 3D Finite Element Model
title_full	Stability Analysis of Ecological Slopes Based on a 3D Finite Element Model
title_fullStr	Stability Analysis of Ecological Slopes Based on a 3D Finite Element Model
title_full_unstemmed	Stability Analysis of Ecological Slopes Based on a 3D Finite Element Model
title_sort	stability analysis of ecological slopes based on a 3d finite element model
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/cabf6521de5b406cb2406ab84c134bee
work_keys_str_mv	AT zifansui stabilityanalysisofecologicalslopesbasedona3dfiniteelementmodel AT weijiayuan stabilityanalysisofecologicalslopesbasedona3dfiniteelementmodel AT wenyi stabilityanalysisofecologicalslopesbasedona3dfiniteelementmodel AT weihuanyang stabilityanalysisofecologicalslopesbasedona3dfiniteelementmodel
_version_	1718428949250310144

Stability Analysis of Ecological Slopes Based on a 3D Finite Element Model

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