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Pullout capacity of spatial anchors

Pullout capacity of spatial anchors This paper discusses the pullout capacity of spatial anchors in soil under applied vertical force. In field tests, the pullout forces were gradually increased and the ground surface displacements measured in two profiles perpendicular to each other. The laboratory and field tests were performed for several embedment depths and anchor diameter ratios in the same sand and under the same conditions. The anchor pulling was also laboratory‐tested so that the vertical anchor displacements were given and the corresponding force intensity measured. The finite element method was used for the pullout force computation in test cases. The relations between displacements and pullout forces obtained by the laboratory tests, field tests and numerical computations were statistically analysed. Owing to gradual convergence of pullout forces towards the limit value, the exponential function was adopted as an approximation curve. The two obtained constants of the function represent the significant mechanical characteristics. The first is limit pullout force and the second gives the total stiffness of the soil mechanical system. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Engineering Computations Emerald Publishing

Pullout capacity of spatial anchors

Lidija Frgić; Pavao Marović; Krešimir Tor
Engineering Computations , Volume 21 (6): 12 – Sep 1, 2004
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12 pages

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Publisher
Emerald Publishing
Copyright
Copyright © 2004 Emerald Group Publishing Limited. All rights reserved.
ISSN
0264-4401
DOI
10.1108/02644400410545182
Publisher site
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Abstract

This paper discusses the pullout capacity of spatial anchors in soil under applied vertical force. In field tests, the pullout forces were gradually increased and the ground surface displacements measured in two profiles perpendicular to each other. The laboratory and field tests were performed for several embedment depths and anchor diameter ratios in the same sand and under the same conditions. The anchor pulling was also laboratory‐tested so that the vertical anchor displacements were given and the corresponding force intensity measured. The finite element method was used for the pullout force computation in test cases. The relations between displacements and pullout forces obtained by the laboratory tests, field tests and numerical computations were statistically analysed. Owing to gradual convergence of pullout forces towards the limit value, the exponential function was adopted as an approximation curve. The two obtained constants of the function represent the significant mechanical characteristics. The first is limit pullout force and the second gives the total stiffness of the soil mechanical system.

Journal

Engineering Computations – Emerald Publishing

Published: Sep 1, 2004

Keywords: Numerical analysis; Finite element analysis; Approximation theory; Soil mechanics

References

  • The resistance to breaking out of mushroom foundation for pylons
    Balla, A.
  • Bearing capacity of concrete blocks subjected to extraction force
    Frgić, L.
  • The bearing capacity of anchor foundations
    Mariupolskii, L.G.
  • Study on the uplift resistance of footings /II/
    Matsuo, M.
  • The uplift capacity of shallow buried anchor slabs
    Sarač, Dž
  • Computer Analysis
    Turk, S.; Budin, L.
  • Expansion of cavities in infinite soil mass
    Vesić, A.S.