Mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels

Abstract Concrete diaphragm walls (CDWs) are widely used as support of deep excavation in soft ground in urban areas. Ground deformation occurs during the excavation of trenches for the installation of the CDW panels due to ground stress release. This paper investigates the ground deformation during...

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Autor principal:	Guichun Zhu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ca903ec9b4cf4748ae36ce0610b3dd32
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spelling	oai:doaj.org-article:ca903ec9b4cf4748ae36ce0610b3dd322021-12-02T18:51:28ZMindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels10.1038/s41598-021-98403-z2045-2322https://doaj.org/article/ca903ec9b4cf4748ae36ce0610b3dd322021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98403-zhttps://doaj.org/toc/2045-2322Abstract Concrete diaphragm walls (CDWs) are widely used as support of deep excavation in soft ground in urban areas. Ground deformation occurs during the excavation of trenches for the installation of the CDW panels due to ground stress release. This paper investigates the ground deformation during slurry trenching using Mindlin solution. The pressure of slurry used to protect the trench stability during excavation is simulated as a triangularly distributed load on the trench walls, the soil stress state is solved using Mindlin solution, and the horizontal and vertical ground displacement are obtained through integral transformation of ground strain. The rationality of the solution is verified through comparison between the analytical solution and field measurement. Sensitivity analyses are performed on soil elastic modulus, Poisson's ratio, trench excavation depth and panel length. Simplified formulation is proposed for the prediction of horizontal ground deformation. The impact of excavation stages and adjacent panels on the ground deformation is explored. The study finds that the Mindlin solution is able to provide an approximate solution on the ground deformation during slurry trenching, and the simplified formulation can be used to provide a fast estimate of the horizontal ground movement in engineering practice.Guichun ZhuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Guichun Zhu Mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels
description	Abstract Concrete diaphragm walls (CDWs) are widely used as support of deep excavation in soft ground in urban areas. Ground deformation occurs during the excavation of trenches for the installation of the CDW panels due to ground stress release. This paper investigates the ground deformation during slurry trenching using Mindlin solution. The pressure of slurry used to protect the trench stability during excavation is simulated as a triangularly distributed load on the trench walls, the soil stress state is solved using Mindlin solution, and the horizontal and vertical ground displacement are obtained through integral transformation of ground strain. The rationality of the solution is verified through comparison between the analytical solution and field measurement. Sensitivity analyses are performed on soil elastic modulus, Poisson's ratio, trench excavation depth and panel length. Simplified formulation is proposed for the prediction of horizontal ground deformation. The impact of excavation stages and adjacent panels on the ground deformation is explored. The study finds that the Mindlin solution is able to provide an approximate solution on the ground deformation during slurry trenching, and the simplified formulation can be used to provide a fast estimate of the horizontal ground movement in engineering practice.
format	article
author	Guichun Zhu
author_facet	Guichun Zhu
author_sort	Guichun Zhu
title	Mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels
title_short	Mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels
title_full	Mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels
title_fullStr	Mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels
title_full_unstemmed	Mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels
title_sort	mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ca903ec9b4cf4748ae36ce0610b3dd32
work_keys_str_mv	AT guichunzhu mindlinsolutionongrounddeformationcausedbythetrenchexcavationduringinstallationofconcretediaphragmwallpanels
_version_	1718377412393172992

Mindlin solution on ground deformation caused by the trench excavation during installation of concrete diaphragm wall panels

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