Force Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer

Soldier pile support is an important tool for supporting deep foundation pits in the sand-gravel layer. However, since the sand-gravel layer itself is an aggregate of particles, its noncontinuity will cause extremely complex changes in the properties of the surrounding soils during pile supporting,...

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Autores principales:	Jiang Xie, Xiaojia Lu, Jinan Wang, Liu Yang, Xiangang Han
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/50b657f60a0d425a916f7575df28ebd3
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spelling	oai:doaj.org-article:50b657f60a0d425a916f7575df28ebd32021-11-08T02:36:19ZForce Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer1875-920310.1155/2021/9617807https://doaj.org/article/50b657f60a0d425a916f7575df28ebd32021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/9617807https://doaj.org/toc/1875-9203Soldier pile support is an important tool for supporting deep foundation pits in the sand-gravel layer. However, since the sand-gravel layer itself is an aggregate of particles, its noncontinuity will cause extremely complex changes in the properties of the surrounding soils during pile supporting, and the changes in the mechanical properties of the soil behind the piles can also affect the safety and stability of the pit. To study the changing pattern of the surrounding soil in the course of pile supporting, we used the numerical method to simulate an excavation in the sand-gravel layer, followed by an analysis of the movement and stress distribution of the surrounding rocks. A photoelastic experiment was carried out to simulate the excavation process and study the force chain network of the surrounding soil as well as its changing characteristics. As shown by the results, (1) during the excavation of a deep foundation pit supported by soldier piles, on the same horizontal plane, the force chain changed most dramatically at the position that was 13.8 m (depth of the foundation pit) away from the edge of the foundation pit; (2) during the excavation, the force chain structure of the surrounding soil changed from vertical development to both vertical and horizontal developments; when there was a hard rock layer at the bottom of the soldier piles, the supporting effect of the piles was mainly provided by the hard rock layer; (3) the free face should be reinforced, and the excavation face should be adjusted based on the underground conditions of surrounding buildings (structures).Jiang XieXiaojia LuJinan WangLiu YangXiangang HanHindawi LimitedarticlePhysicsQC1-999ENShock and Vibration, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Jiang Xie Xiaojia Lu Jinan Wang Liu Yang Xiangang Han Force Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer
description	Soldier pile support is an important tool for supporting deep foundation pits in the sand-gravel layer. However, since the sand-gravel layer itself is an aggregate of particles, its noncontinuity will cause extremely complex changes in the properties of the surrounding soils during pile supporting, and the changes in the mechanical properties of the soil behind the piles can also affect the safety and stability of the pit. To study the changing pattern of the surrounding soil in the course of pile supporting, we used the numerical method to simulate an excavation in the sand-gravel layer, followed by an analysis of the movement and stress distribution of the surrounding rocks. A photoelastic experiment was carried out to simulate the excavation process and study the force chain network of the surrounding soil as well as its changing characteristics. As shown by the results, (1) during the excavation of a deep foundation pit supported by soldier piles, on the same horizontal plane, the force chain changed most dramatically at the position that was 13.8 m (depth of the foundation pit) away from the edge of the foundation pit; (2) during the excavation, the force chain structure of the surrounding soil changed from vertical development to both vertical and horizontal developments; when there was a hard rock layer at the bottom of the soldier piles, the supporting effect of the piles was mainly provided by the hard rock layer; (3) the free face should be reinforced, and the excavation face should be adjusted based on the underground conditions of surrounding buildings (structures).
format	article
author	Jiang Xie Xiaojia Lu Jinan Wang Liu Yang Xiangang Han
author_facet	Jiang Xie Xiaojia Lu Jinan Wang Liu Yang Xiangang Han
author_sort	Jiang Xie
title	Force Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer
title_short	Force Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer
title_full	Force Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer
title_fullStr	Force Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer
title_full_unstemmed	Force Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer
title_sort	force chain effect of deep foundation pit supported by soldier piles in the sand-gravel layer
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/50b657f60a0d425a916f7575df28ebd3
work_keys_str_mv	AT jiangxie forcechaineffectofdeepfoundationpitsupportedbysoldierpilesinthesandgravellayer AT xiaojialu forcechaineffectofdeepfoundationpitsupportedbysoldierpilesinthesandgravellayer AT jinanwang forcechaineffectofdeepfoundationpitsupportedbysoldierpilesinthesandgravellayer AT liuyang forcechaineffectofdeepfoundationpitsupportedbysoldierpilesinthesandgravellayer AT xianganghan forcechaineffectofdeepfoundationpitsupportedbysoldierpilesinthesandgravellayer
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Force Chain Effect of Deep Foundation Pit Supported by Soldier Piles in the Sand-Gravel Layer

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