Abstract
This paper presents a study to the moment-rotation aspects of two 3-member DVW reinforced timber connections with an inter-connecting steel plate used as middle member. Previous studies showed that reinforcing dowel-type timber connections with ‘densified veneer wood’ (DVW) and using expanded tube fasteners results in connections with superior structural properties compared to all conventional connections. In this connection type, the DVW prevents premature timber splitting. The tube fasteners aid a high initial stiffness, a high ductility and a high reliability. A drawback of the connection, already in a 3-member connection, is the total thickness. By using only two side members and a much thinner, steel middle member, the thickness is strongly reduced. The steel middle member is used as a connecting interface in a flitch plate connection. This generally results in a 50% reduction of the rotational stiffness. However, it is shown by an analytical and numerical study, that the rotational stiffness of two closely spaced, flitch plate DVW connections acting in series remains unchanged if certain conditions are fulfilled. Two full connection tests are performed to confirm the analytical and numerical results. Additionally, the paper presents a comparison to a conventional connection, which confirms the structural quality of the reinforced connection.
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References
Brandon, D.: Mechanical properties of bond line between timber and densified veneer wood, STSM report of COST E55. Short term scientific mission code: STSM-E55-06127, Brussels, Belgium (2010)
Leijten, A.: Standard short duration tests on locally reinforced moment joints, 8 mm dowels and bolts. Technische Universiteit Delft (1987)
Leijten, A.J.M.: Densified Veneer Wood Reinforced Timber Joints with Expanded Tube Fasteners. PhD Thesis, Technische Universiteit Delft (1998)
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© 2014 RILEM
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Brandon, D., Leijten, A. (2014). Structural Performance and Advantages of DVW Reinforced Moment Transmitting Timber Joints with Steel Plate Connectors and Tube Fasteners. In: Aicher, S., Reinhardt, HW., Garrecht, H. (eds) Materials and Joints in Timber Structures. RILEM Bookseries, vol 9. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7811-5_24
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DOI: https://doi.org/10.1007/978-94-007-7811-5_24
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-7810-8
Online ISBN: 978-94-007-7811-5
eBook Packages: EngineeringEngineering (R0)