Publication detail

Prediction of the load-displacement response of ground anchors via the load-transfer method

CHALMOVSKÝ, J. MIČA, L.

Original Title

Prediction of the load-displacement response of ground anchors via the load-transfer method

Type

journal article in Web of Science

Language

English

Original Abstract

Prestressed ground anchors are important structural elements in geotechnical engineering. Despite their widespread usage, the design process is often significantly simplified. One of the major drawbacks of commonly used design methods is the assumption that skin friction is mobilized uniformly along an anchor's fixed length, one consequence of which is that a progressive failure phenomenon is neglected. The following paper introduces an alternative design approach - a computer algorithm employing the load-transfer method. The method is modified for the analysis of anchors and combined with a procedure for the derivation of load-transfer functions based on commonly available laboratory tests. The load-transfer function is divided into a pre-failure (hardening) and a post-failure (softening) segment. In this way, an aspect of non-linear stress-strain soil behavior is incorporated into the algorithm. The influence of post-grouting in terms of radial stress update, diameter enlargement, and grout consolidation is included. The axial stiffness of the anchor body is not held constant. Instead, it gradually decreases as a direct consequence of tensile cracks spreading in the grout material. An analysis of the program's operation is performed via a series of parametric studies in which the influence of governing parameters is investigated. Finally, two case studies concerning three investigation anchor load tests are presented.

Keywords

ground anchor; pullout capacity; load-transfer method; progressive failure; grout

Authors

CHALMOVSKÝ, J.; MIČA, L.

Released

25. 2. 2020

Publisher

Techno Press

ISBN

2005-307X

Periodical

Geomechanics and Engineering

Year of study

20

Number

4

State

Republic of Korea

Pages from

359

Pages to

370

Pages count

12

URL

http://www.techno-press.org/content/?page=article&journal=gae&volume=20&num=4&ordernum=8

BibTex

@article{BUT166267,
  author="Juraj {Chalmovský} and Lumír {Miča}",
  title="Prediction of the load-displacement response of ground anchors via the load-transfer method",
  journal="Geomechanics and Engineering",
  year="2020",
  volume="20",
  number="4",
  pages="359--370",
  doi="10.12989/gae.2020.20.4.359",
  issn="2005-307X",
  url="http://www.techno-press.org/content/?page=article&journal=gae&volume=20&num=4&ordernum=8"
}