Timber and wood bonding process: Pull-out strength of steel rods with metric thread bonded in glulam

• Unité de recherche: COST
• Numéro de projet: C04.0217
• Titre du projet anglais: Timber and wood bonding process: Pull-out strength of steel rods with metric thread bonded in glulam

Mots-clé (Anglais)

bonding; gluing; reinforcement; timber; epoxy; glulam; beam; steel rod; connection ; joint

Programme de recherche (Anglais)

COST-Action E34 - Bonding of timber

Description succincte (Anglais)

Several design approaches and code models to calculate the pull-out strength of steel rods bonded in glulam structural elements have been published. By comparing these models and approaches, some discrepancies and partly even contradictions between the models, especially regarding the treatment of isolated parameters, can be found. On this background, a test program shall be realised, to study the influence of a selection of these parameters, known or supposed to be determinant on the pull-out strength of axially loaded steel rods with a metric screw-thread, bonded with an epoxy-type adhesive in glulam made of spruce. The evaluation will be focused to determine the influence of timber density, rod-to-grain angle (0° or 90°), length and diameter of the rod on the pull-out strength of glued-in rods.

Partenaires et organisations internationales (Anglais)

AT, BE, CY, DK, FI, FR, DE, EL, IT, NL, NO, PL, PT, SK, SI, ES, SE, CH, UK

Résumé des résultats (Abstract) (Anglais)

Several design approaches and code models to calculate the pull-out strength of steel rods bonded in glulam structural elements have been published. By comparing these models and approaches, some discrepancies and partly even contradictions between the models, especially regarding the treatment of isolated parameters, can be found. On this background, a test program shall be realised, to study the influence of a selection of these parameters, known or supposed to be determinant on the pull-out strength of axially loaded steel rods with a metric screw-thread, bonded with an epoxy-type adhesive in glulam made of spruce. The evaluation will be focused to determine the influence of timber density, rod-to-grain angle (0° or 90°), length and diameter of the rod on the pull-out strength of glued-in rods.

Références bases de données (Anglais)

Swiss Database: COST-DB of the State Secretariat for Education and Research Hallwylstrasse 4 CH-3003 Berne, Switzerland Tel. [phone] Swiss Project-Number: C04.0217