Pull-out mechanism of continuous ball shape anchors in transparent soil

XIA Yuan-you; CHEN Chen; NI Qing

doi:10.11779/CJGE201705004

Volume 39 Issue 5

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Chinese Journal of Geotechnical Engineering > 2017 > 39(5): 804-812. > DOI: 10.11779/CJGE201705004

XIA Yuan-you, CHEN Chen, NI Qing. Pull-out mechanism of continuous ball shape anchors in transparent soil[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(5): 804-812. DOI: 10.11779/CJGE201705004

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Pull-out mechanism of continuous ball shape anchors in transparent soil

1. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China;
2. School of Engineering, University of Warwick, Coventry, CV4 7ES, UK

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Received Date: August 27, 2016
Published Date: May 24, 2017

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Abstract

A physical modelling system is developed to study the pull-out mechanism of embedded soil anchors using transparent soil and particle image velocimetry (PIV). In the system, two different continuous ball shape anchors are set in the experiment to observe displacement impact areas, soil displacement, load-displacement curve and shape and location of pull-out failure interface. After analyzing the ultimate bearing capacity and the failure mechanism of the soil anchors, a suggested method is given. From the results, based on the circumstances of this model, the maximum vertical displacement impact areas have direct relationship with the radius of the ball and the distance between the balls during pull-out of the soil anchors. The continuous ball shape soil anchors (type A and B) can effectively provide 52% and 117% more force than the normal cylinder anchors. The pull-out force of the continuous ball shape soil anchors can be divided into three different parts: adhesion on shaft, end bearing in clay and cohesive through clay.
- soil anchor,
- model test,
- transparent soil,
- soil displacement,
- anchoring mechanism

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