Parameter Analysis on Hardening Soil Model of Soft Soil for Foundation Pits Based on Shear Rates in Shenzhen Bay, China

The hardening soil (HS) model is the most commonly used constitutive models of soft soil of foundation pits of PLAXIS software in numerical analysis, and its parameters are prerequisite for accurate calculation. In this paper, relevant parameters of the HS model in Shenzhen Bay in China were studied...

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Main Authors: Yanbin Fu, Siyue He, Sizhan Zhang, Yong Yang
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:Advances in Materials Science and Engineering
Online Access:http://dx.doi.org/10.1155/2020/7810918
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author Yanbin Fu
Siyue He
Sizhan Zhang
Yong Yang
author_facet Yanbin Fu
Siyue He
Sizhan Zhang
Yong Yang
author_sort Yanbin Fu
collection DOAJ
description The hardening soil (HS) model is the most commonly used constitutive models of soft soil of foundation pits of PLAXIS software in numerical analysis, and its parameters are prerequisite for accurate calculation. In this paper, relevant parameters of the HS model in Shenzhen Bay in China were studied through one-dimensional consolidation tests and triaxial shear tests. Analytical methods of reference secant stiffness and failure ratio of soft soil were systematically studied, the influence of shear rates on reference secant stiffness and failure ratio of soft soil was analyzed, and the relationship between stiffness parameters and compressive modulus of soft soil was established. The results showed that reference secant stiffness and failure ratio of soft soil obtained by different analytical methods were quite different, and the errors of reference secant stiffness and failure ratio of soft soil obtained by stress-strain curves were the smallest and the stability was the best; at the same time, with increase of shear rates, the peak deviator stress and reference secant stiffness of soft soil increased, but failure ratio did not change much. The research results could provide a reference of parameter analysis of soft soil for the HS model in the numerical analysis and similar working conditions of foundation pits.
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institution Kabale University
issn 1687-8434
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language English
publishDate 2020-01-01
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series Advances in Materials Science and Engineering
spelling doaj-art-fd06db5a1b1d42d2b4ab914a46f035392025-02-03T01:25:49ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/78109187810918Parameter Analysis on Hardening Soil Model of Soft Soil for Foundation Pits Based on Shear Rates in Shenzhen Bay, ChinaYanbin Fu0Siyue He1Sizhan Zhang2Yong Yang3College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, Guangdong 518060, ChinaKey Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an, Shaanxi 710064, ChinaCollege of Civil and Transportation Engineering, Shenzhen University, Shenzhen, Guangdong 518060, ChinaJiZhunFangZhong Chengdu Architectural Design Co., Ltd., Chengdu, Sichuan 610000, ChinaThe hardening soil (HS) model is the most commonly used constitutive models of soft soil of foundation pits of PLAXIS software in numerical analysis, and its parameters are prerequisite for accurate calculation. In this paper, relevant parameters of the HS model in Shenzhen Bay in China were studied through one-dimensional consolidation tests and triaxial shear tests. Analytical methods of reference secant stiffness and failure ratio of soft soil were systematically studied, the influence of shear rates on reference secant stiffness and failure ratio of soft soil was analyzed, and the relationship between stiffness parameters and compressive modulus of soft soil was established. The results showed that reference secant stiffness and failure ratio of soft soil obtained by different analytical methods were quite different, and the errors of reference secant stiffness and failure ratio of soft soil obtained by stress-strain curves were the smallest and the stability was the best; at the same time, with increase of shear rates, the peak deviator stress and reference secant stiffness of soft soil increased, but failure ratio did not change much. The research results could provide a reference of parameter analysis of soft soil for the HS model in the numerical analysis and similar working conditions of foundation pits.http://dx.doi.org/10.1155/2020/7810918
spellingShingle Yanbin Fu
Siyue He
Sizhan Zhang
Yong Yang
Parameter Analysis on Hardening Soil Model of Soft Soil for Foundation Pits Based on Shear Rates in Shenzhen Bay, China
Advances in Materials Science and Engineering
title Parameter Analysis on Hardening Soil Model of Soft Soil for Foundation Pits Based on Shear Rates in Shenzhen Bay, China
title_full Parameter Analysis on Hardening Soil Model of Soft Soil for Foundation Pits Based on Shear Rates in Shenzhen Bay, China
title_fullStr Parameter Analysis on Hardening Soil Model of Soft Soil for Foundation Pits Based on Shear Rates in Shenzhen Bay, China
title_full_unstemmed Parameter Analysis on Hardening Soil Model of Soft Soil for Foundation Pits Based on Shear Rates in Shenzhen Bay, China
title_short Parameter Analysis on Hardening Soil Model of Soft Soil for Foundation Pits Based on Shear Rates in Shenzhen Bay, China
title_sort parameter analysis on hardening soil model of soft soil for foundation pits based on shear rates in shenzhen bay china
url http://dx.doi.org/10.1155/2020/7810918
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AT siyuehe parameteranalysisonhardeningsoilmodelofsoftsoilforfoundationpitsbasedonshearratesinshenzhenbaychina
AT sizhanzhang parameteranalysisonhardeningsoilmodelofsoftsoilforfoundationpitsbasedonshearratesinshenzhenbaychina
AT yongyang parameteranalysisonhardeningsoilmodelofsoftsoilforfoundationpitsbasedonshearratesinshenzhenbaychina