Working Mechanism of Pile Group with Different Pile Spacing in Dense Sand
Complex interaction mechanism exists between the pile group and soil. To realize the pile-soil load transmission mechanism in detail, the failure pattern of pile groups installed in dense sand considering different pile spacing was investigated by means of laboratory experimental model test and thre...
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Hindawi Limited
2019-01-01
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Series: | Advances in Civil Engineering |
Online Access: | http://dx.doi.org/10.1155/2019/5376594 |
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doaj-ae6706e18c6149f78548e44f528533912020-11-25T01:57:40ZengHindawi LimitedAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/53765945376594Working Mechanism of Pile Group with Different Pile Spacing in Dense SandYadong Chen0Fan Lu1Abdoullah Namdar2Jiangdong Cai3Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an 223001, ChinaCollege of Transportation Science & Engineering, Nanjing Tech University, Nanjing 210009, ChinaFaculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an 223001, ChinaFaculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai’an 223001, ChinaComplex interaction mechanism exists between the pile group and soil. To realize the pile-soil load transmission mechanism in detail, the failure pattern of pile groups installed in dense sand considering different pile spacing was investigated by means of laboratory experimental model test and three-dimensional discrete element method. The results suggested that the narrow pile spacing was beneficial to the development of the pile tip resistance, and it enhanced the bearing performance of the pile group at the initial stage of settlement. The pile spacing changed the shaft resistance pattern with modification of the strain energy mechanism released within the subsoil. The pile group with 6b pile spacing had higher composite group efficiency. A joint fan-shaped displacement zone was formed beneath the pile tip for the pile group with 3b pile spacing; this pile foundation presented the block failure mechanism. The sand displacement beneath the cap for the pile group with 6b pile spacing mainly located on the upper part of the piles, the sand displacement around both sides of the piles presented asymmetric, and a relatively independent fan-shaped displacement zone was formed beneath the pile tip.http://dx.doi.org/10.1155/2019/5376594 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yadong Chen Fan Lu Abdoullah Namdar Jiangdong Cai |
spellingShingle |
Yadong Chen Fan Lu Abdoullah Namdar Jiangdong Cai Working Mechanism of Pile Group with Different Pile Spacing in Dense Sand Advances in Civil Engineering |
author_facet |
Yadong Chen Fan Lu Abdoullah Namdar Jiangdong Cai |
author_sort |
Yadong Chen |
title |
Working Mechanism of Pile Group with Different Pile Spacing in Dense Sand |
title_short |
Working Mechanism of Pile Group with Different Pile Spacing in Dense Sand |
title_full |
Working Mechanism of Pile Group with Different Pile Spacing in Dense Sand |
title_fullStr |
Working Mechanism of Pile Group with Different Pile Spacing in Dense Sand |
title_full_unstemmed |
Working Mechanism of Pile Group with Different Pile Spacing in Dense Sand |
title_sort |
working mechanism of pile group with different pile spacing in dense sand |
publisher |
Hindawi Limited |
series |
Advances in Civil Engineering |
issn |
1687-8086 1687-8094 |
publishDate |
2019-01-01 |
description |
Complex interaction mechanism exists between the pile group and soil. To realize the pile-soil load transmission mechanism in detail, the failure pattern of pile groups installed in dense sand considering different pile spacing was investigated by means of laboratory experimental model test and three-dimensional discrete element method. The results suggested that the narrow pile spacing was beneficial to the development of the pile tip resistance, and it enhanced the bearing performance of the pile group at the initial stage of settlement. The pile spacing changed the shaft resistance pattern with modification of the strain energy mechanism released within the subsoil. The pile group with 6b pile spacing had higher composite group efficiency. A joint fan-shaped displacement zone was formed beneath the pile tip for the pile group with 3b pile spacing; this pile foundation presented the block failure mechanism. The sand displacement beneath the cap for the pile group with 6b pile spacing mainly located on the upper part of the piles, the sand displacement around both sides of the piles presented asymmetric, and a relatively independent fan-shaped displacement zone was formed beneath the pile tip. |
url |
http://dx.doi.org/10.1155/2019/5376594 |
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