Analytical Model for Pullout Capacity of a Vertical Concrete Anchor Block Embedded at Shallow Depth in Cohesionless Soil
Publication: International Journal of Geomechanics
Volume 18, Issue 7
Abstract
This paper reports theoretical investigations into the behavior of a concrete anchor block embedded in cohesionless soil. This research was carried out for the purpose of devising an analytical method for attaining a reliable and accurate estimate of the pullout capacity of an anchor block embedded at a shallow depth. To this end, it was assumed that a passive wedge of soil developed in front of the anchor block, due to the force exerted from the retaining structure via the attachment to a rebar. The limit equilibrium of the wedge was satisfied, and relevant assumptions were made to idealize the geometry of a failure mechanism. For simplicity in hand calculations, design charts were developed, utilizing the ratio of the breakout factor to the embedment depth to obtain the pullout capacity of an anchor block. The proposed theoretical estimation was compared with existing theoretical and experimental investigations for accuracy and reliability, and the comparison clearly showed the superiority of the proposed method in both the areas. Moreover, the effects of the placement of anchor blocks in relation to retaining structures were studied.
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Acknowledgments
The research was supported by the Academic Research Grant [Fund 22:5998 (5) under Grant 18] of the Bangladesh University of Engineering and Technology (BUET).
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Published In
International Journal of Geomechanics
Volume 18 • Issue 7 • July 2018
Copyright
© 2018 American Society of Civil Engineers.
History
Received: Jan 24, 2017
Accepted: Feb 7, 2018
Published online: May 10, 2018
Published in print: Jul 1, 2018
Discussion open until: Oct 10, 2018
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