Deformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation

The deformation characteristics of a raised and widened old Chinese roadway on a soft soil foundation are investigated in this study via finite element numerical simulation. The rules of ground surface settlement, slope foot lateral displacement, and ground surface settlement evolution of the roadbe...

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Autores principales:	Keke Li, Wenyuan Xu, Liang Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	finite element soft soil foundation widening of existing road deformation characteristics settlement Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/ca7618f9696e4b2c8a4c417268717831
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spelling	oai:doaj.org-article:ca7618f9696e4b2c8a4c4172687178312021-11-25T19:06:52ZDeformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation10.3390/sym131121172073-8994https://doaj.org/article/ca7618f9696e4b2c8a4c4172687178312021-11-01T00:00:00Zhttps://www.mdpi.com/2073-8994/13/11/2117https://doaj.org/toc/2073-8994The deformation characteristics of a raised and widened old Chinese roadway on a soft soil foundation are investigated in this study via finite element numerical simulation. The rules of ground surface settlement, slope foot lateral displacement, and ground surface settlement evolution of the roadbed under three modes (one-time construction of an eight-lane expressway, widened four-lane expressway, and raised/widened four-lane expressway) are compared. The ground surface settlement process of the eight-lane road foundation, which is formed by first widening and then raising the road, is highly complex. The ground surface settlement curve under the old road foundation increases and then decreases. The lateral displacement of the slope foot also interacts with the widening and raising of the eight-lane roadbed foundation. The range of lateral displacement is 70.05, 42.58, 124.81, 104.54 mm. Fifteen years after construction, the total settlement of the raised and widened roadbed is much larger than that of the one built directly. The total settlement values at the center of the two roadbeds are 297.05 and 234.85 mm, respectively. This manuscript provides data support for the reconstruction and expansion of roads on soft soil foundations, for choosing appropriate construction methods to build roads, and for avoiding major road damage, which is of great significance to the construction of road infrastructure in the future.Keke LiWenyuan XuLiang YangMDPI AGarticlefinite elementsoft soil foundationwidening of existing roaddeformation characteristicssettlementMathematicsQA1-939ENSymmetry, Vol 13, Iss 2117, p 2117 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	finite element soft soil foundation widening of existing road deformation characteristics settlement Mathematics QA1-939
spellingShingle	finite element soft soil foundation widening of existing road deformation characteristics settlement Mathematics QA1-939 Keke Li Wenyuan Xu Liang Yang Deformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation
description	The deformation characteristics of a raised and widened old Chinese roadway on a soft soil foundation are investigated in this study via finite element numerical simulation. The rules of ground surface settlement, slope foot lateral displacement, and ground surface settlement evolution of the roadbed under three modes (one-time construction of an eight-lane expressway, widened four-lane expressway, and raised/widened four-lane expressway) are compared. The ground surface settlement process of the eight-lane road foundation, which is formed by first widening and then raising the road, is highly complex. The ground surface settlement curve under the old road foundation increases and then decreases. The lateral displacement of the slope foot also interacts with the widening and raising of the eight-lane roadbed foundation. The range of lateral displacement is 70.05, 42.58, 124.81, 104.54 mm. Fifteen years after construction, the total settlement of the raised and widened roadbed is much larger than that of the one built directly. The total settlement values at the center of the two roadbeds are 297.05 and 234.85 mm, respectively. This manuscript provides data support for the reconstruction and expansion of roads on soft soil foundations, for choosing appropriate construction methods to build roads, and for avoiding major road damage, which is of great significance to the construction of road infrastructure in the future.
format	article
author	Keke Li Wenyuan Xu Liang Yang
author_facet	Keke Li Wenyuan Xu Liang Yang
author_sort	Keke Li
title	Deformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation
title_short	Deformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation
title_full	Deformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation
title_fullStr	Deformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation
title_full_unstemmed	Deformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation
title_sort	deformation characteristics of raising, widening of old roadway on soft soil foundation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ca7618f9696e4b2c8a4c417268717831
work_keys_str_mv	AT kekeli deformationcharacteristicsofraisingwideningofoldroadwayonsoftsoilfoundation AT wenyuanxu deformationcharacteristicsofraisingwideningofoldroadwayonsoftsoilfoundation AT liangyang deformationcharacteristicsofraisingwideningofoldroadwayonsoftsoilfoundation
_version_	1718410304956661760

Deformation Characteristics of Raising, Widening of Old Roadway on Soft Soil Foundation

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