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Behaviour of grouted dowels used in precast concrete connections
Author(s) -
Aguiar Eduardo Aurélio Barros,
Bellucio Ellen Kellen,
El Debs Mounir Khalil
Publication year - 2012
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201100048
Subject(s) - dowel , precast concrete , perpendicular , structural engineering , materials science , stiffness , compressive strength , shear (geology) , geotechnical engineering , composite material , engineering , geometry , mathematics
Abstract This research deals with the behaviour of grouted dowels used in beam‐to‐column connections in precast concrete structures. The research focuses primarily on the theoretical and experimental analysis of the resistance mechanism of the dowels. The experimental programme included 15 models for analysing the following variations in dowel parameters: a) dowel diameters of 16, 20 and 25 mm, b) dowel inclinations of 0° (i.e. perpendicular to the interface), 45° and 60°, c) compressive strength of classes C35 and C50 for the concrete adjacent to the dowels, and d) the absence or presence of compressive loads normal to the interface. The experimental results indicate that the ultimate capacity and shear stiffness of the inclined dowels are significantly higher than those of the perpendicular dowels. Based on these results, an analytical model is proposed that considers the influence of the parameters studied regarding the capacity of the dowel.