Hysteretic modelling of moment-resisting nailed timber joints

  • B. T. Kivell Beca Carter Hollings & Ferner Ltd., Auckland, New Zealand
  • P. J. Moss University of Canterbury, Christchurch, New Zealand
  • A. J. Carr University of Canterbury, Christchurch, New Zealand

Abstract

While nailed timber joints have been used for many years, attention
is now being focussed on producing nailed joints that have a significant moment resistance. Such joints can be made using steel sideplates and
the increased moment resistance over more traditional nailing could be utilised to resist seismic loads. Like steel and concrete members used
to resist seismic loads, the timber members and joints need to be modelled sufficiently accurately in order that computer models of the structures
will provide adequate predictions of the overall seismic behaviour. This paper discusses hysteretic models and proposes a model for nailed timber joints (based on the modified Takeda model previously used for concrete models) that incorporates the pinching effect that is observed in tests
on moment-resisting nailed timber joints. The behaviour of two simple portal frames under the El Centro 1940 earthquake record is discussed. Values for the model parameters were obtained from tests reported elsewhere.

References

Wilkinson, T.L., "Theoretical Lateral Resistance of Nailed Joints", Proceedings ASCE, Vol. 95, No. ST5, pp. 1381-1398, May 1971.

Kuenzi, E.W., "Theoretical Design of a Nailed or Bolted Joint Under Lateral Load", U-S Department of Agriculture , Forest Products Laboratory, Report D1951, 1953.

Noren, B., "Nailed Joints - A Contribution to the Theoretical Analysis of Yield and Strength", Swedish Forest Products Research Laboratory, 1962.

Mack, J.J., "The Strength and Stiffness of Nailed Joints Under Short Duration Loading", C.S.I.R.O., Division of Forest Products, Australia, 1966.

Foschi, R.O., "Load Slip Characteristics of Nails", Wood Science, Vol. 7, pp. 69-76, 1974.

Lake, M.D., "Lateral Loading of Nailed Joints Made with Douglas Fir Timber", Department of Civil Engineering, University of Canterbury, unpublished M.E. Report, 1973.

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Thurston, S.J. and Flack, P.F., "Cyclic Loading of Large T-Joints Incorporating Nailed Steel Side Plates", Central Laboratories, M.W.D. Wellington, Report No. 5-99/6 1979.

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Takeda, T., Sozen, M.A. and Nielson, N.N., "Reinforced Concrete Response to Simulated Earthquake", ASCE, Vol. 96, No. ST12, Dec. 1970 , pp. 2557-2573.

Emori, K. and Schnobrich, W.C., "Analysis of Reinforced Concrete Frame- Wall Structures for Strong Motion Earthquakes", Civil Engineering Studies, Structural Research Series No. 457, University of Illinois, Urbana, Dec. 1978.

Kivell, B.T., Moss, P.J. and Carr, A.J., "The Cyclic Load Behaviour of Two Moment Resisting Nailed Timber Portal Frames", submitted to N.Z. Institution of Engineers for possible publication.

Published
1981-12-31
How to Cite
Kivell, B. T., Moss, P. J., & Carr, A. J. (1981). Hysteretic modelling of moment-resisting nailed timber joints. Bulletin of the New Zealand Society for Earthquake Engineering, 14(4), 233-243. https://doi.org/10.5459/bnzsee.14.4.233-243
Section
Articles

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