Model Tests and 3D Finite Element Simulations of Uplift Resistance of Shallow Rectangular Anchor Foundations
Publication: International Journal of Geomechanics
Volume 12, Issue 2
Abstract
Anchor foundations of various embedment ratios, shapes, and sizes are frequently used in civil engineering structures to provide uplift resistance. Therefore, to achieve economic and safe design of such foundations, engineers should understand the failure mechanism associated with them. In the present study, a three-dimensional (3D) finite element model incorporating an elastoplastic material model coupled with the isotropic strain-softening law, the nonassociated flow rule, and the shear-band effect, is used to investigate the failure mechanisms of vertically uploaded shallow rectangular anchor foundations buried in dense Toyoura sand. Satisfactory agreement was found between the experimental and numerical uplift resistance-displacement factor relationships. In particular, the peak uplift resistance, response stiffness, and passive plastic zone development are found to be functions of the embedment ratio, shape, and size. However, previous design approaches cannot capture the size effect on the peak uplift resistance factor of the rectangular anchor foundation.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 12 • Issue 2 • April 2012
Pages: 105 - 112
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Jun 6, 2010
Accepted: Feb 9, 2011
Published online: Feb 11, 2011
Published in print: Apr 1, 2012
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