Load displacement parameters of metal plate connection in Kempas and Meranti

Yeoh, David and M Sani, Abdul Rahim and Tan, Yu Eng (2002) Load displacement parameters of metal plate connection in Kempas and Meranti. In: 7th World Conference on Timber Engineering, 2002, Shah Alam Malaysia.

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Abstract

Limited studies have been carried out on metal plate connection for Malaysian hardwoods. The purpose of this study is to examine and verify the metal plate connection theoretical model of relative displacements between plate and wood member of metal plate connection as given by Foschi. Eighty metal plate connected tensile joints consisting of 50 mm (t) x 100 mm (w) kempas and meranti were tested separately as single species for their ultimate tensile strength in accordance with AS 1649 – 1998. Metal plate connectors of a single type from a foreign system provider available in the local truss industry were used. The size of the plates employed was 100 mm (w) x 100 mm (l) x 1.0 mm (t). For each test specimen, specific gravity and oven-dried moisture content were determined and modes of failure were observed. Complete load - displacement data for each specimen were recorded and plotted with the aid of computer. The data and graphs were analyzed according to Foschi’s approach to derive the load – displacement parameters, maximum load per tooth, and load per tooth at critical slip. The load – displacement parameters include stiffness of the connection, tangent at yield point and the yintercept of the tangent line. It is found that there was an increasing correlation between stiffness and specific gravity of timber. The stiffness value is also found to have a significant effect on the design load per tooth. However, the stiffness of the connection varies significantly with the timber and plate orientation. This study has verified the findings of Foschi experimentally and is useful for the derivation of basic working load of metal plate connections for Malaysian hardwoods. It will be able to contribute significantly to MS544: Part 8: 1999 Draft.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:metal plate connection; load-displacement parameters; Foschi; Kempas and Meranti; basic working load
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:5742
Deposited By:Prof. Madya Dr David Yeoh Eng Chuan
Deposited On:22 Jul 2014 16:27
Last Modified:22 Jul 2014 16:27

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