A Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep

The postconstruction settlement of the bridge approach is usually uneven, which could create a bump in the roadway. Indeed, this is a typical situation at the end of the bridge approach and requires a solution. One of the main causes of postconstruction settlement is the creep of soil. This paper is...

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Autores principales:	Fei Zhou, Tangdai Xia, Bingqi Yu, Fan Xia, Fan Yu
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi-Wiley 2021
Materias:	Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/67c2b9d468554cd99b246cc095b2c505
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spelling	oai:doaj.org-article:67c2b9d468554cd99b246cc095b2c5052021-11-15T01:19:09ZA Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep1468-812310.1155/2021/4029439https://doaj.org/article/67c2b9d468554cd99b246cc095b2c5052021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/4029439https://doaj.org/toc/1468-8123The postconstruction settlement of the bridge approach is usually uneven, which could create a bump in the roadway. Indeed, this is a typical situation at the end of the bridge approach and requires a solution. One of the main causes of postconstruction settlement is the creep of soil. This paper is aimed at generalizing a new design method for controlling highway postconstruction settlement by replacing subgrade with expanded polystyrene (EPS). In the new method, the creep coefficient can be calculated based on the Yin-Graham EVP model. Thus, the relationship between the overloading ratio (OLR) and overconsolidation ratio (OCR) is obtained. The new method involves five steps: (a) determine the creep coefficient based on the relationship between the creep coefficient and over consolidation ratio, (b) divide the ground into a suitable number of sublayers, (c) select groups of different overloading ratios and then calculate the average values of the additional stress and overconsolidation ratio for each sublayer under different OLRs, (d) calculate the postconstruction settlement under different OLRs, and (e) determine the replacement capacity for different sections. This method can be used for quantitative design according to different requirements of postconstruction settlement of foundation. Taking Huzhou Avenue as an example, the case study illustrates the calculation process of the new method in detail.Fei ZhouTangdai XiaBingqi YuFan XiaFan YuHindawi-WileyarticleGeologyQE1-996.5ENGeofluids, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Geology QE1-996.5
spellingShingle	Geology QE1-996.5 Fei Zhou Tangdai Xia Bingqi Yu Fan Xia Fan Yu A Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep
description	The postconstruction settlement of the bridge approach is usually uneven, which could create a bump in the roadway. Indeed, this is a typical situation at the end of the bridge approach and requires a solution. One of the main causes of postconstruction settlement is the creep of soil. This paper is aimed at generalizing a new design method for controlling highway postconstruction settlement by replacing subgrade with expanded polystyrene (EPS). In the new method, the creep coefficient can be calculated based on the Yin-Graham EVP model. Thus, the relationship between the overloading ratio (OLR) and overconsolidation ratio (OCR) is obtained. The new method involves five steps: (a) determine the creep coefficient based on the relationship between the creep coefficient and over consolidation ratio, (b) divide the ground into a suitable number of sublayers, (c) select groups of different overloading ratios and then calculate the average values of the additional stress and overconsolidation ratio for each sublayer under different OLRs, (d) calculate the postconstruction settlement under different OLRs, and (e) determine the replacement capacity for different sections. This method can be used for quantitative design according to different requirements of postconstruction settlement of foundation. Taking Huzhou Avenue as an example, the case study illustrates the calculation process of the new method in detail.
format	article
author	Fei Zhou Tangdai Xia Bingqi Yu Fan Xia Fan Yu
author_facet	Fei Zhou Tangdai Xia Bingqi Yu Fan Xia Fan Yu
author_sort	Fei Zhou
title	A Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep
title_short	A Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep
title_full	A Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep
title_fullStr	A Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep
title_full_unstemmed	A Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep
title_sort	practical design method for reducing postconstruction settlement of highway subgrade induced by soil creep
publisher	Hindawi-Wiley
publishDate	2021
url	https://doaj.org/article/67c2b9d468554cd99b246cc095b2c505
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A Practical Design Method for Reducing Postconstruction Settlement of Highway Subgrade Induced by Soil Creep

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