A method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation

Abstract In engineering practice, the measured bearing capacity of a sand pile composite foundation in a mucky soil layer is much larger than the design value. Based on the sand pile construction and the load application process, a method of calculating the bearing capacity of the foundation based o...

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Autores principales:	Yongtao Zhang, Yuqing Liu, Huiwu Luo, Peishuai Chen, Dejie Li, Enlong Liu, Benliang Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/756c4c99b1464fe29cd193458f37d780
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spelling	oai:doaj.org-article:756c4c99b1464fe29cd193458f37d7802021-12-02T15:10:34ZA method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation10.1038/s41598-021-95678-02045-2322https://doaj.org/article/756c4c99b1464fe29cd193458f37d7802021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95678-0https://doaj.org/toc/2045-2322Abstract In engineering practice, the measured bearing capacity of a sand pile composite foundation in a mucky soil layer is much larger than the design value. Based on the sand pile construction and the load application process, a method of calculating the bearing capacity of the foundation based on the effective stress was proposed. Cavity diameter expansion in sand pile construction was simplified into a planar problem, and the cavity expansion theory was used to establish the expression of the rate of displacement and the horizontal stress increase. Based on the e–p curve and the calculation of the degree of consolidation, the relationships between the horizontal and vertical effective stress and the void ratio were obtained. According to the close relationship between the bearing capacity of the foundation in a mucky soil layer and the water content, an expression describing the relationships between the bearing capacity of the foundation, effective stress, void ratio, and water content was established. For the temporary engineering foundation treatment project, which needs a high bearing capacity but allows large foundation deformation, the design of sand pile composite foundations uses these relationships to take the consolidation effect of mucky soil into consideration, thereby reducing the replacement rate and lowering the construction cost.Yongtao ZhangYuqing LiuHuiwu LuoPeishuai ChenDejie LiEnlong LiuBenliang YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yongtao Zhang Yuqing Liu Huiwu Luo Peishuai Chen Dejie Li Enlong Liu Benliang Yang A method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation
description	Abstract In engineering practice, the measured bearing capacity of a sand pile composite foundation in a mucky soil layer is much larger than the design value. Based on the sand pile construction and the load application process, a method of calculating the bearing capacity of the foundation based on the effective stress was proposed. Cavity diameter expansion in sand pile construction was simplified into a planar problem, and the cavity expansion theory was used to establish the expression of the rate of displacement and the horizontal stress increase. Based on the e–p curve and the calculation of the degree of consolidation, the relationships between the horizontal and vertical effective stress and the void ratio were obtained. According to the close relationship between the bearing capacity of the foundation in a mucky soil layer and the water content, an expression describing the relationships between the bearing capacity of the foundation, effective stress, void ratio, and water content was established. For the temporary engineering foundation treatment project, which needs a high bearing capacity but allows large foundation deformation, the design of sand pile composite foundations uses these relationships to take the consolidation effect of mucky soil into consideration, thereby reducing the replacement rate and lowering the construction cost.
format	article
author	Yongtao Zhang Yuqing Liu Huiwu Luo Peishuai Chen Dejie Li Enlong Liu Benliang Yang
author_facet	Yongtao Zhang Yuqing Liu Huiwu Luo Peishuai Chen Dejie Li Enlong Liu Benliang Yang
author_sort	Yongtao Zhang
title	A method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation
title_short	A method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation
title_full	A method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation
title_fullStr	A method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation
title_full_unstemmed	A method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation
title_sort	method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/756c4c99b1464fe29cd193458f37d780
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A method of calculating the bearing capacity of sand pile composite foundations in a mucky soil layer considering consolidation

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