[article]
| Titre : |
Linear elastic fracture mechanics pullout analyses of headed anchors in stressed concrete |
| Type de document : |
texte imprimé |
| Auteurs : |
Piccinin, R., Auteur ; Ballarini, R., Auteur ; Cattaneo, S., Auteur |
| Article en page(s) : |
pp. 761-768 |
| Note générale : |
Mécanique appliquée |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Anchors Axisymmetry Finite element method Prestressed concrete Cracking Tensile strength. |
| Résumé : |
The results of research initiated in the early 1980s led to the replacement of plasticity-based design guidelines for the load-carrying capacity of headed anchors embedded in concrete with those developed using fracture mechanics. While provisions are available in the design codes that account for the presence of tensile fields causing concrete cracking, no provisions are available for anchors embedded in prestressed concrete. This paper presents the results of linear elastic fracture mechanics (LEFM) analyses and of a preliminary experimental investigation of the progressive failure of headed anchors embedded in a concrete matrix under compressive or tensile prestress. The model predicts an increase (decrease) in load-carrying capacity and ductility with increasing compressive (tensile) prestress. It is shown that despite neglecting the dependence on size of concrete fracture toughness, LEFM predicts with remarkable accuracy the functional dependence of the ultimate capacity on prestress.
|
| DEWEY : |
620.1 |
| ISSN : |
0733-9399 |
| En ligne : |
http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] |
in Journal of engineering mechanics > Vol. 136 N° 6 (Juin 2010) . - pp. 761-768
[article] Linear elastic fracture mechanics pullout analyses of headed anchors in stressed concrete [texte imprimé] / Piccinin, R., Auteur ; Ballarini, R., Auteur ; Cattaneo, S., Auteur . - pp. 761-768. Mécanique appliquée Langues : Anglais ( eng) in Journal of engineering mechanics > Vol. 136 N° 6 (Juin 2010) . - pp. 761-768
| Mots-clés : |
Anchors Axisymmetry Finite element method Prestressed concrete Cracking Tensile strength. |
| Résumé : |
The results of research initiated in the early 1980s led to the replacement of plasticity-based design guidelines for the load-carrying capacity of headed anchors embedded in concrete with those developed using fracture mechanics. While provisions are available in the design codes that account for the presence of tensile fields causing concrete cracking, no provisions are available for anchors embedded in prestressed concrete. This paper presents the results of linear elastic fracture mechanics (LEFM) analyses and of a preliminary experimental investigation of the progressive failure of headed anchors embedded in a concrete matrix under compressive or tensile prestress. The model predicts an increase (decrease) in load-carrying capacity and ductility with increasing compressive (tensile) prestress. It is shown that despite neglecting the dependence on size of concrete fracture toughness, LEFM predicts with remarkable accuracy the functional dependence of the ultimate capacity on prestress.
|
| DEWEY : |
620.1 |
| ISSN : |
0733-9399 |
| En ligne : |
http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] |
|
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