Experimental Study on the Behavior of X-Section Pile Subjected to Cyclic Axial Load in Sand

X-section cast-in-place concrete pile is a new type of foundation reinforcement technique featured by the X-shaped cross-section. Compared with a traditional circular pile, an X-section pile with the same cross-sectional area has larger side resistance due to its larger cross-sectional perimeter. Th...

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Main Authors: Yiwei Lu, Hanlong Liu, Changjie Zheng, Xuanming Ding
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2017/2431813
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author Yiwei Lu
Hanlong Liu
Changjie Zheng
Xuanming Ding
author_facet Yiwei Lu
Hanlong Liu
Changjie Zheng
Xuanming Ding
author_sort Yiwei Lu
collection DOAJ
description X-section cast-in-place concrete pile is a new type of foundation reinforcement technique featured by the X-shaped cross-section. Compared with a traditional circular pile, an X-section pile with the same cross-sectional area has larger side resistance due to its larger cross-sectional perimeter. The behavior of static loaded X-section pile has been extensively reported, while little attention has been paid to the dynamic characteristics of X-section pile. This paper introduced a large-scale model test for an X-section pile and a circular pile with the same cross-sectional area subjected to cyclic axial load in sand. The experimental results demonstrated that cyclic axial load contributed to the degradation of shaft friction and pile head stiffness. The dynamic responses of X-section pile were determined by loading frequency and loading amplitude. Furthermore, comparative analysis between the X-section pile and the circular pile revealed that the X-section pile can improve the shaft friction and reduce the cumulative settlement under cyclic loading. Static load test was carried out prior to the vibration tests to investigate the ultimate bearing capacity of test piles. This study was expected to provide a reasonable reference for further studies on the dynamic responses of X-section piles in practical engineering.
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institution Kabale University
issn 1070-9622
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language English
publishDate 2017-01-01
publisher Wiley
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series Shock and Vibration
spelling doaj-art-e5e4973d2fb74edd9044fc2afb300d422025-02-03T01:30:47ZengWileyShock and Vibration1070-96221875-92032017-01-01201710.1155/2017/24318132431813Experimental Study on the Behavior of X-Section Pile Subjected to Cyclic Axial Load in SandYiwei Lu0Hanlong Liu1Changjie Zheng2Xuanming Ding3School of Civil and Transportation Engineering, Hohai University, Nanjing 210098, ChinaSchool of Civil and Transportation Engineering, Hohai University, Nanjing 210098, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaX-section cast-in-place concrete pile is a new type of foundation reinforcement technique featured by the X-shaped cross-section. Compared with a traditional circular pile, an X-section pile with the same cross-sectional area has larger side resistance due to its larger cross-sectional perimeter. The behavior of static loaded X-section pile has been extensively reported, while little attention has been paid to the dynamic characteristics of X-section pile. This paper introduced a large-scale model test for an X-section pile and a circular pile with the same cross-sectional area subjected to cyclic axial load in sand. The experimental results demonstrated that cyclic axial load contributed to the degradation of shaft friction and pile head stiffness. The dynamic responses of X-section pile were determined by loading frequency and loading amplitude. Furthermore, comparative analysis between the X-section pile and the circular pile revealed that the X-section pile can improve the shaft friction and reduce the cumulative settlement under cyclic loading. Static load test was carried out prior to the vibration tests to investigate the ultimate bearing capacity of test piles. This study was expected to provide a reasonable reference for further studies on the dynamic responses of X-section piles in practical engineering.http://dx.doi.org/10.1155/2017/2431813
spellingShingle Yiwei Lu
Hanlong Liu
Changjie Zheng
Xuanming Ding
Experimental Study on the Behavior of X-Section Pile Subjected to Cyclic Axial Load in Sand
Shock and Vibration
title Experimental Study on the Behavior of X-Section Pile Subjected to Cyclic Axial Load in Sand
title_full Experimental Study on the Behavior of X-Section Pile Subjected to Cyclic Axial Load in Sand
title_fullStr Experimental Study on the Behavior of X-Section Pile Subjected to Cyclic Axial Load in Sand
title_full_unstemmed Experimental Study on the Behavior of X-Section Pile Subjected to Cyclic Axial Load in Sand
title_short Experimental Study on the Behavior of X-Section Pile Subjected to Cyclic Axial Load in Sand
title_sort experimental study on the behavior of x section pile subjected to cyclic axial load in sand
url http://dx.doi.org/10.1155/2017/2431813
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AT changjiezheng experimentalstudyonthebehaviorofxsectionpilesubjectedtocyclicaxialloadinsand
AT xuanmingding experimentalstudyonthebehaviorofxsectionpilesubjectedtocyclicaxialloadinsand