Strength and Local Deformability of Wood Beneath Bolted Connectors
Publication: Journal of Structural Engineering
Volume 124, Issue 2
Abstract
In this paper, the problem of the local resistance of wood beneath a bolt connector subjected to shear is studied both in the case of load parallel to the grain and perpendicular to the grain. Two specific test methods were adopted in order to study the influence of lateral confinement. Thin plate specimens of glued laminated wood pierced through by a steel bar (16 mm diameter) were considered to simulate a real situation. From the load-slip curves, the initial stiffness and the embedding strength of wood beneath the connector were estimated. Moreover, the geometric interferometry technique made it possible to obtain the entire field of displacements in the wood surrounding the bolt. Comparisons of test results with existing data are in good agreement for specimens without confinement. Confined specimens show a slight increase in bearing capacity for load parallel to the grain and a significant increase of the ultimate bearing capacity for load perpendicular to the grain. Negligible differences were noted in deformability.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
ASCE Committee on Wood.(1986). “Structural wood research needs.”J. Struct. Engrg., ASCE, 112(9), 2155–2165.
2.
Eurocode 5: Design of timber structures: Part 1. General rules and rules for buildings. (1992). Draft, Commission of the Eur. Communities, Brussels, Belgium.
3.
Foschi, R. O. (1974). “Load-slip characteristics of nails. Wood Sci., 7(1), 69–74.
4.
Goodman, J. R., and Bodig, J.(1970). “Orthotropic elastic properties of wood.”J. Struct. Engrg., ASCE, 96(11), 2301–2319.
5.
Johansen, K. W.(1949). “Theory of timber connections.”Int. Assn. of Bridge and Struct. Engrg. (IABSE) Publ., 9, 249–262.
6.
Kuenzi, E. W. (1953). “Theoretical design of a nailed or bolted joint under lateral load.”Rep. No. 1951, U.S. Forest Products Lab., Madison, Wis.
7.
Larsen, H. J. (1973). “The yield load of bolted and nailed joints.”Proc., Int. Union of Forestry Res. Org., Div. V, Conf. IUFRO, 646–654.
8.
McLain, T. E., and Thangjitham, S.(1983). “Bolted wood-joint yield model.”J. Struct. Engrg., ASCE, 109(8), 1820–1835.
9.
Nicol Smith, C. A. (1972). “Design of nailed shear connections.”Proc., Instn. of Civ. Engrs., London, UK, Part 2 (Feb), 369–380.
10.
PrEN383—draft of European standard. (1991). “Timber structures—Test methods: Determination of embedding strength and foundation values for dowel type fasteners.” European Committee for Standardization. Brussels, Belgium.
11.
Smith, J. (1980). “A review of analytical and empirical models used to predict the strength and stiffness characteristics of timber joints with dowel-type connectors.”Res. Rep. 1/80, Timber Res. and Development Assn. (TRADA), High Wycombe, Bucks, England.
12.
Soltis, A., and Wilkinson, T. L. (1991). “United States adaptation of European yield model to large diameter dowel fastener specification.”Proc. Int. Timber Engrg. Conf., London, 3.43–3.49.
13.
Soltis, L. A., Hubbard, F. K., and Wilkinson, T. L.(1986). “Bearing strength of bolted joints.”J. Struct. Engrg., ASCE, 112(9), 2141–2154.
14.
Trayer, G. W. (1932). “The bearing strength of wood under bolts.”Tech. Bull. 332, U.S. Dept. of Agri. Govt. Printing Ofc., Washington, D.C.
15.
Whale, L. R. S., and Smith, I. (1986). “The derivation of design clauses for nailed and bolted joints in Eurocode 5.”Working Commission W-18, Timber Struct., Meeting 19, Int. Council for Build. Res. Studies and Documentation.
16.
Wilkinson, T. L.(1971). “Theoretical lateral resistance of nailed joints.”J. Struct. Engrg., ASCE, 97(5), 1381–1398.
17.
Wilkinson, T. L.(1972). “Analysis of nailed joints with dissimilar members.”J. Struct. Engrg., ASCE, 98(9), 2005–2013.
18.
Wilkinson, T. L. (1978). “Strength of bolted wood joints with various ratios of member thickness.”U.S. Forest Products Lab, Madison, Wis., Res. Paper FPL-314.
Information & Authors
Information
Published In
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Feb 1, 1998
Published in print: Feb 1998
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.