Thin-walled timber and FRP-timber veneer composite CEE-sections

Mainey, Alexander J., Gilbert, Benoit P., Fernando, Dilum and Bailleres, Henri (2015). Thin-walled timber and FRP-timber veneer composite CEE-sections. In: Dilum Fernando, Jin-Guang Teng and Jose L. Torero, Proceedings of the Second International Conference on Performance-based and Life-cycle Structural Engineering (PLSE 2015). International Conference on Performance-based and Life-cycle Structural Engineering, Brisbane, QLD, Australia, (1443-1452). 9-11 December 2015. doi:10.14264/uql.2016.422

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Author Mainey, Alexander J.
Gilbert, Benoit P.
Fernando, Dilum
Bailleres, Henri
Title of paper Thin-walled timber and FRP-timber veneer composite CEE-sections
Conference name International Conference on Performance-based and Life-cycle Structural Engineering
Conference location Brisbane, QLD, Australia
Conference dates 9-11 December 2015
Proceedings title Proceedings of the Second International Conference on Performance-based and Life-cycle Structural Engineering (PLSE 2015)
Place of Publication Brisbane, QLD, Australia
Publisher School of Civil Engineering, The University of Queensland
Publication Year 2015
Sub-type Fully published paper
DOI 10.14264/uql.2016.422
Open Access Status File (Publisher version)
ISBN 9781742721477
Editor Dilum Fernando
Jin-Guang Teng
Jose L. Torero
Start page 1443
End page 1452
Total pages 10
Collection year 2016
Language eng
Formatted Abstract/Summary
This paper compares the structural performance between thin-walled timber and FRP-timber composite Ceesections. While, thin walled composite timber structures have been proven to be efficient and ultra-light structural elements, their manufacturing is difficult and labour intensive. Significant effort and time is required to prevent the cracking of the transverse timber veneers, bent in the grain direction, when forming the crosssectional shape. FRP-timber structures overcome this disadvantage by replacing the transverse veneers with flexible, unidirectional FRP material and only keeping the timber veneers which are bent in their natural rolling direction. The Cee-sections investigated in this study were 210 mm deep × 90 mm wide × 500 mm high and manufactured from five plies. For both section types, the three internal plies were thin (1 mm thick) softwood Hoop pine (Araucaria cunninghamii) veneers, orientated along the section longitudinal axis. The two outer layers, providing bending stiffness to the walls, were Hoop pine veneers (1 mm thick) for the timber sections and glass fibre reinforced plastic (0.73 mm thick) for the FRP-timber sections orientated perpendicular to the inner layers. The manufacturing process is briefly introduced in this paper. The profiles were fitted with strain gauges and tested in compression. Linear Variable Displacement Transducers also recorded the buckling along one flange. The test results are presented and discussed in this paper in regards to their structural behaviour and performance. Results showed that the use of FRP in the sections increases both the elastic local buckling load and section capacity, the latter being increased by about 24 percent. The results indicate that thin-walled FRPtimber can ultimately be used as a sustainable alternative to cold-formed steel profiles.
Keyword Ultra-light thin-walled structures
Sustainable design
Laminated timber structures
Glass fibre reinforced plastic (GFRP)
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

 
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Created: Wed, 23 Dec 2015, 14:48:52 EST by Anthony Yeates on behalf of Faculty Of Engineering, Architecture & Info Tech