Subgrade Reaction Characteristics to the Anchor Pile of a Sheet Pile Quay Wall

The Conventional Design Method (CDM) for anchored sheet pile quay walls cannot accurately calculate the anchor pile deformation, partly because it does not properly consider the subgrade reaction. This study aims to clarify the subgrade reaction characteristics of the anchor pile using finite elemen...

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Main Authors: Kenichiro Miyashita, Takashi Nagao
Format: Article
Language:English
Published: D. G. Pylarinos 2024-02-01
Series:Engineering, Technology & Applied Science Research
Subjects:
Online Access:https://etasr.com/index.php/ETASR/article/view/6474
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author Kenichiro Miyashita
Takashi Nagao
author_facet Kenichiro Miyashita
Takashi Nagao
author_sort Kenichiro Miyashita
collection DOAJ
description The Conventional Design Method (CDM) for anchored sheet pile quay walls cannot accurately calculate the anchor pile deformation, partly because it does not properly consider the subgrade reaction. This study aims to clarify the subgrade reaction characteristics of the anchor pile using finite element analysis. The CDM assumes that passive failure occurs at the front of the anchor pile. On the contrary, this study shows that the active failure region generated from the back of the sheet pile wall expands to the periphery of the anchor pile and the passive failure region is not generated at its front. Thus, the subgrade reaction to the anchor pile is found to be smaller than the CDM assumption. The CDM also neglects the subgrade reaction in parts shallower than the tie-rod mounting height in the pile front. This study clarifies that the subgrade reaction in this part greatly contributes to the deformation resistance of the pile. Consequently, the subgrade reaction in the shallower range than the tie-rod mounting height is greater than or equal to that in the deeper range. Furthermore, the subgrade reaction has a lower upper limit when acting on the anchor pile than when acting on a horizontally stratified ground, and the difference between these limits widens as the reference earthquake strengthens.
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spelling doaj.art-c2a5aaf72863442fbc5e308bf7a51dd92024-02-09T06:06:14ZengD. G. PylarinosEngineering, Technology & Applied Science Research2241-44871792-80362024-02-0114110.48084/etasr.6474Subgrade Reaction Characteristics to the Anchor Pile of a Sheet Pile Quay WallKenichiro Miyashita0Takashi Nagao1Pacific Consultants Co. Ltd, JapanKobe University, JapanThe Conventional Design Method (CDM) for anchored sheet pile quay walls cannot accurately calculate the anchor pile deformation, partly because it does not properly consider the subgrade reaction. This study aims to clarify the subgrade reaction characteristics of the anchor pile using finite element analysis. The CDM assumes that passive failure occurs at the front of the anchor pile. On the contrary, this study shows that the active failure region generated from the back of the sheet pile wall expands to the periphery of the anchor pile and the passive failure region is not generated at its front. Thus, the subgrade reaction to the anchor pile is found to be smaller than the CDM assumption. The CDM also neglects the subgrade reaction in parts shallower than the tie-rod mounting height in the pile front. This study clarifies that the subgrade reaction in this part greatly contributes to the deformation resistance of the pile. Consequently, the subgrade reaction in the shallower range than the tie-rod mounting height is greater than or equal to that in the deeper range. Furthermore, the subgrade reaction has a lower upper limit when acting on the anchor pile than when acting on a horizontally stratified ground, and the difference between these limits widens as the reference earthquake strengthens. https://etasr.com/index.php/ETASR/article/view/6474sheet pile quay wallseismic resistant designsubgrade reactionanchor pileactive failure
spellingShingle Kenichiro Miyashita
Takashi Nagao
Subgrade Reaction Characteristics to the Anchor Pile of a Sheet Pile Quay Wall
Engineering, Technology & Applied Science Research
sheet pile quay wall
seismic resistant design
subgrade reaction
anchor pile
active failure
title Subgrade Reaction Characteristics to the Anchor Pile of a Sheet Pile Quay Wall
title_full Subgrade Reaction Characteristics to the Anchor Pile of a Sheet Pile Quay Wall
title_fullStr Subgrade Reaction Characteristics to the Anchor Pile of a Sheet Pile Quay Wall
title_full_unstemmed Subgrade Reaction Characteristics to the Anchor Pile of a Sheet Pile Quay Wall
title_short Subgrade Reaction Characteristics to the Anchor Pile of a Sheet Pile Quay Wall
title_sort subgrade reaction characteristics to the anchor pile of a sheet pile quay wall
topic sheet pile quay wall
seismic resistant design
subgrade reaction
anchor pile
active failure
url https://etasr.com/index.php/ETASR/article/view/6474
work_keys_str_mv AT kenichiromiyashita subgradereactioncharacteristicstotheanchorpileofasheetpilequaywall
AT takashinagao subgradereactioncharacteristicstotheanchorpileofasheetpilequaywall