Abstract
This paper presents a study on the implementation of connection ductility in timber structures. Regardless for which purpose ductility in timber structures is needed, it is necessary to avoid a brittle failure of the timber element before the ductile element is in the stage of yielding. An over-strength factor is introduced to consider the required distance of the load-bearing resistance of the beam element from the introduced bending moment initiated by the load-carrying capacity of the fasteners. Hence, a Monte-Carlo simulation was conducted, focusing particularly on the scattering of the material properties to determine a reliability index of a joint loaded in bending. Since the reliability index is based on the application of the ductility, a range of over-strength factors is given for different reliability indices. The Monte-Carlo simulation is based on the mean material properties of the experimental specimens. The experiments are explained and the non-linear behaviour is displayed not only for connections loaded in tension but also for joints loaded in bending.
Keywords
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
EN 1998-1:2004 + AC:2009: Eurocode 8: Design of struictures for earthquake resistance- Part1: General rules, seismic actions and rules for buildings. European Committee for Standardization (CEN), Brussels (2004)
EN 1995-1-1: Eurocode 5: Design of timber structures - Part 1-1: General - Common rules and rules for buildings. European Committee for Standardization (CEN), Brussels (2004)
EN 1991-1-7: Eurocode 1: Actions on structures - Part 1-7: General actions - Accidental actions. European Committee for Standardization (CEN), Brussels (2006)
Brühl, F., Kuhlmann, U., Jorissen, A.: Consideration of plasticity within the design of timber structures due to connection ductility. Structural Engineer 33, S.3007–S.3017 (2011)
Jorissen, A.: Double shear timber connections with dowel type fasteners. Delft University of Technology, The Netherlands, Dissertation (1998)
Bejtka, I.: Verstärkungen von Bauteilen aus Holz mit Vollgewindeschrauben. Universität Karlsruhe, Lehrstuhl für Ingenieurholzbau und Baukonstruktionen, Dissertation (2005)
Schickhofer, G., Augustin, M., Jeitler, G.: Einführung in die Verbindungstechnik mit Stabdübeln, Schrauben und eingeklebten Stahlstangen. In: 6. Grazer Holzbau-Fachtagung (2007)
Smith, I., Asiz, A., Snow, M., Chui, I.H.: Possible Canadian/ISO approach to deriving design values from test data. In: Proceedings of the Meeting No. 39 of Working Commission W18 - Timber Structures, CIB, Florence, Italy (August 2006)
EN 10025-2: Hot rolled products of structural steels. Technical delivery conditions for - non-alloy structural steels. European Committee for Standardization (CEN), Bruxelles
EN 26891: Timber structures; Joints made with mechanical fasteners; General principles for the determination of strength and deformation characteristics. European Committee for Standardization (CEN), Brussels (1991)
EN 12512: Timber structures - Test methods - Cyclic testing of joints made with mechanical fasteners. European Committee for Standardization (CEN), Bruxelles
Muñoz, W., Mohammad, M., Salenikovich, A., Quenneville, P.: Need for a harmonized approach for calculations of ductility of timber assemblies. In: Proceedings of the Meeting No. 41 of Working Commission W18 - Timber Structures, CIB, St. Andrews, Canada (August 2008)
SIA 265:2012: Holzbau. Schweizerischer Ingenieur- und Architektenverein (2012)
Brühl, F.: Ductility in timber structures - possibilities and requirements. Institut für Konstruktion und Entwurf, Universität Stuttgart, Dissertation (in preparation)
DIN EN 1995-1-1/NA: National Annex - Design of timber structures - Part 1-1: General rules and rules for buildings. DIN-Deutsches Institut für Normung e.V. (2010)
EN 1993-1-8: Eurocode 3: Design of steel structures- Part 1-8: Design of joints. European Committee for Standardization (CEN), Brussels (2005)
E DIN EN 14080: Holzbauwerke - Brettschichtholz und Balkenschichtholz - Anforderungen; deutsche Fassung prEN 14080:2011. DIN-Deutsches Institut für Normung e.V. (DIN) (2011)
Brühl, F., Kuhlmann, U.: Requirements on Ductility in Timber Structures. In: Proceedings of the meeting No. 45 of Working Commission W18 - Timber Structures, CIB, Växjö, Schweden (paper N° 45-7-5) (August 2012)
Paulay, T., Priestley, M.J.N.: Seismic design of reinforced concrete and masonary buildings. John Wiley & Sons, Inc. (1992)
EN 1990: Eurocode: Basis of structural design. European Committee for Standardization (CEN), Brussels (2002)
Köhler, J.: Reliability of timber structures, Swiss Federal Institute of Technology, Zürich, Dissertation (April 2006)
Joint Committee on Structural Safety (JCSS): Probabilistic Model Code. Part 3: Resistance Models (3.5 Properties of timber) (2006)
EN 14080: Timber structures - Glued laminated timber and glued solid timber - Requirements. European Committee for Standardization (CEN), Brussels (2011)
Kuhlmann, U., Brühl, F.: Vorteilhafte Bemessung von Holztragwerken durch duktile, plastische Anschlüsse / Institut für Konstruktion und Entwurf. 2012. – Forschungsvorhaben im Auftrag der iVTH, gefördert duch die AiF, Forschungsbericht AiF 16184 N (2012)
Kuhlmann, U., Brühl, F.: Robuste Holztragwerke durch duktile Anschlüsse mit stiftförmigen Verbindungsmitteln/Institut für Konstruktion und Entwurf. 2011. – Forschungsvorhaben im Auftrag des Deutschen Instituts für Bautechnik DIBt (2011)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 RILEM
About this paper
Cite this paper
Brühl, F., Schänzlin, J., Kuhlmann, U. (2014). Ductility in Timber Structures: Investigations on Over-Strength Factors. 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_17
Download citation
DOI: https://doi.org/10.1007/978-94-007-7811-5_17
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-7810-8
Online ISBN: 978-94-007-7811-5
eBook Packages: EngineeringEngineering (R0)