Skip to main content
Journal of Wood Science

Official Journal of the Japan Wood Research Society

Download PDF
  • ORIGINAL ARTICLE
  • Published:

Splitting strength of beams loaded perpendicular to grain by dowel joints

Journal of Wood Science volume 51, pages 480–485 (2005)Cite this article

Abstract

A linear elastic fracture mechanics model for calculation of the splitting strength of dowel-type fastener joints loaded perpendicular to grain (Van der Put/Leijten model) has previously been presented, and now forms the basis for design in Eurocode 5. The original Van der Put/Leijten model was derived using a number of simplifying assumptions, e.g., that the normal forces in the cracked parts of the beam can be ignored, leading to a solution that does not involve the effect of an initial crack. In the present article an extended version of the Van der Put/Leijten model is derived without any simplifying assumptions, and it is shown that the original Van der Put/Leijten model appears as a special case, namely by assuming that only contributions from shear deformations are significant. The model presented here involves the effect of an initial crack and may be characterized as a generalized linear elastic fracture mechanics model. Results of tests showing the influence of initial cracks of various lengths are presented and compared with the predictions.

References

  1. Johansen KW (1941) Forsøg med træforbindelser. Bygningsstatiske Meddelelser, årgang XII

  2. Van der Put TACM, Leijten AJM (2000) Evaluation of perpendicular to grain failure of beams caused by concentrated loads of joints. In: Proceedings of the International Council for Research and Innovation in Building and Construction, CIB-W18 Meeting Thirty-three, Delft, The Netherlands, paper no. 33-7-7

  3. Leijten AJM, Jorissen AJM (2001) Splitting strength of beam loaded by connections perpendicular to grain, model validation. In: Proceedings of the International Council for Research and Innovation in Building and Construction, CIB-W18 Meeting Thirty-four, Venice, Italy, paper no. 34-7-1

  4. Leijten AJM (2002) Splitting strength of beams loaded by connections, model comparison. In: Proceedings of the International Council for Research and Innovation in Building and Construction, CIB-W18 Meeting Thirty-five, Kyoto, Japan, paper no. 35-7-7

  5. Gustafsson PJ, Larsen HJ (2001) Dowel joints loaded perpendicular to grain. In: Aicher S, Reinhardt HW (eds) Joints in timber structures. Proceedings of the International RILEM Symposium, Stuttgart, Germany, pp 577–586

  6. Jensen JL, Gustafsson PJ, Larsen HJ (2003) A tensile fracture model for joints with rods or dowels loaded perpendicular-to-grain. In: Proceedings of the International Council for Research and Innovation in Building and Construction, CIB-W18 Meeting Thirty-six, Colorado, USA, paper no. 36-7-9

  7. EN 1995-1-1 Eurocode 5 (2002) Design of timber structures. Part 1-1: General rules and rules for buildings. Comite Europeen de Normalisation, Brussels, Belgium

  8. Jensen JL (2003) Splitting strength of beams loaded by connections. In: Proceedings of the International Council for Research and Innovation in Building and Construction, CIB-W18 Meeting Thirty-six, Colorado, USA, paper no. 36-7-8

  9. PJ Gustafsson (2003) Fracture perpendicular to grain – structural applications S Thelandersson HJ Larsen (Eds) Timber engineering Wiley Chichester 103–130

    Google Scholar 

  10. K Hellan (1984) Introduction to fracture mechanics McGraw-Hill New York 49–72

    Google Scholar 

  11. Petersson H (2002) Energy release rate analysis. In: Gustafsson PJ (ed) Fracture mechanics models for strength analysis of timber beams with a hole or a notch – a report of RILEM TC-133. Report TVSM-7134, Lund University, Sweden

  12. Ballerini M, Giovanella A (2003) Beams transversally loaded by dowel-type joints: influence on splitting strength of beam thickness and dowel size. In: Proceedings of the International Council for Research and Innovation in Building and Construction, CIB-W18 Meeting Thirty-six, Colorado, USA, paper no. 36-7-7

  13. Yasumura M (2002) Determination of fracture parameter for dowel-type joints loaded perpendicular to wooden grain and its application. In: Proceedings of the International Council for Research and Innovation in Building and Construction, CIB-W18 Meeting Thirty-five, Kyoto, Japan, paper no. 35-7-9

  14. PJ Gustafsson (1987) Analysis of generalized Volkersen-joints in terms of non-linear fracture mechanics G Verchery AH Cardon (Eds) Mechanical behaviour of adhesive joints Pluralis Paris 323–338

    Google Scholar 

  15. Gustafsson PJ, Serrano E (2001) Glued-in rods for timber structures – development of a calculation model. Report TVSM-3056, Division of Structural Mechanics, Lund University, Lund, Sweden

  16. JL Jensen A Koizumi T Sasaki Y Tamura Y Iijima (2001) ArticleTitleAxially loaded glued-in hardwood dowels Wood Sci Technol 35 73–83

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institute of Wood Technology, Akita Prefectural University, 11-1 Kaieizaka, Noshiro, 016-0876, Japan

    Jørgen Lauritzen Jensen

Authors
  1. Jørgen Lauritzen Jensen
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Jørgen Lauritzen Jensen.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Jensen, J. Splitting strength of beams loaded perpendicular to grain by dowel joints. J Wood Sci 51, 480–485 (2005). https://doi.org/10.1007/s10086-004-0687-2

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10086-004-0687-2

Key words