Performance of notched coach screw connection for timber-concrete composite floor system

Yeoh, David and Fragiacomo, Massimo and Aldi, Pietro and Mazzilli, Marta and Kuhlmann, Ulrike (2008) Performance of notched coach screw connection for timber-concrete composite floor system. In: 10th World Conference on Timber Engineering. , 2-5 June 2008, Miyazaki, Japan.

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Abstract

The notched connection for timber-concrete composite beams is obtained by cutting a notch from the timber beam and filling it with concrete during the pouring of the concrete slab. This type of connection has the advantage of high stiffness and strength compared to mechanical fasteners. The paper presents the outcomes of a parametric study of fourteen variations of notched connections which were loaded to failure under shear in push-out specimens. Laminated veneer lumber (LVL) was used for the timber part. Stiffness and strength values obtained from the different connection variations were compared to each other in order to identify the best types. Rectangular and triangular notches reinforced with a coach screw were found to perform satisfactorily. An alternative connection system with punched metal plates was also found to perform well, with the additional benefit of ease of construction. The experimental results were compared with numerical results carried out using a 3D finite element model implemented in ANSYS software package. Agreement was found between the predicted and the experimental failure mechanisms, however further work is needed to fully calibrate the software on the experimental results

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA630-695 Structural engineering (General)
Divisions:Faculty of Civil and Environmental Engineering > Department of Structural and Material Engineering
ID Code:5696
Deposited By:Prof. Madya Dr David Yeoh Eng Chuan
Deposited On:24 Jul 2014 14:33
Last Modified:24 Jul 2014 14:33

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