Debonding along the fixed anchor length of a ground anchorage

A. R. Akisanya; A. Ivanovic

doi:10.1016/j.engstruct.2014.05.013

Debonding along the fixed anchor length of a ground anchorage

A. R. Akisanya, A. Ivanovic

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Abstract

Ground anchorages are the main means of support used for safety aspects in mining and tunnelling industry. Poor installation of ground anchorages can result in partial debonding between the tendon and the grout. The effects of debonding on the load carrying capacity of a model anchorage are examined by pull out tests. The load carrying capacity is found to decrease with increasing length of pre-existing debonding at the tendon–grout interface. The fracture toughness of the tendon–grout and of the ground–grout interfaces is measured over a wide range of mixed-mode loading and the results are used to assess the likelihood of debonding at the interfaces in a ground anchorage system.

Original language	English
Pages (from-to)	23-31
Number of pages	9
Journal	Engineering Structures
Volume	74
Early online date	29 May 2014
DOIs	https://doi.org/10.1016/j.engstruct.2014.05.013
Publication status	Published - 1 Sep 2014

Keywords

anchorages
pull-out tests
debonding
interface fracture
fracture toughness

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10.1016/j.engstruct.2014.05.013

Akisanya and Ivanovic (2014), Engineering Structures, May 2014
NOTICE: this is the author’s version of a work that was accepted for publication in Engineering Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in ENGINEERING STRUCTURES, VOL 74, (2014) DOI: 10.1016/j.engstruct.2014.05.013
Accepted author manuscript, 890 KB

Alfred Akisanya
- Engineering, Engineering - Personal Chair
- Centre for Micro- and Nanomechanics (CEMINACS)
Person: Academic

Cite this

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title = "Debonding along the fixed anchor length of a ground anchorage",

abstract = "Ground anchorages are the main means of support used for safety aspects in mining and tunnelling industry. Poor installation of ground anchorages can result in partial debonding between the tendon and the grout. The effects of debonding on the load carrying capacity of a model anchorage are examined by pull out tests. The load carrying capacity is found to decrease with increasing length of pre-existing debonding at the tendon–grout interface. The fracture toughness of the tendon–grout and of the ground–grout interfaces is measured over a wide range of mixed-mode loading and the results are used to assess the likelihood of debonding at the interfaces in a ground anchorage system.",

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AU - Akisanya, A. R.

AU - Ivanovic, A.

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N2 - Ground anchorages are the main means of support used for safety aspects in mining and tunnelling industry. Poor installation of ground anchorages can result in partial debonding between the tendon and the grout. The effects of debonding on the load carrying capacity of a model anchorage are examined by pull out tests. The load carrying capacity is found to decrease with increasing length of pre-existing debonding at the tendon–grout interface. The fracture toughness of the tendon–grout and of the ground–grout interfaces is measured over a wide range of mixed-mode loading and the results are used to assess the likelihood of debonding at the interfaces in a ground anchorage system.

AB - Ground anchorages are the main means of support used for safety aspects in mining and tunnelling industry. Poor installation of ground anchorages can result in partial debonding between the tendon and the grout. The effects of debonding on the load carrying capacity of a model anchorage are examined by pull out tests. The load carrying capacity is found to decrease with increasing length of pre-existing debonding at the tendon–grout interface. The fracture toughness of the tendon–grout and of the ground–grout interfaces is measured over a wide range of mixed-mode loading and the results are used to assess the likelihood of debonding at the interfaces in a ground anchorage system.

KW - anchorages

KW - pull-out tests

KW - debonding

KW - interface fracture

KW - fracture toughness

U2 - 10.1016/j.engstruct.2014.05.013

DO - 10.1016/j.engstruct.2014.05.013

M3 - Article

VL - 74

SP - 23

EP - 31

JO - Engineering Structures

JF - Engineering Structures

SN - 0141-0296

ER -

Debonding along the fixed anchor length of a ground anchorage

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Alfred Akisanya

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