Modeling Load‐Slip Behavior of Nailed Joints
Publication: Journal of Materials in Civil Engineering
Volume 4, Issue 4
Abstract
A commonly used mathematical model to predict the lateral load‐slip behavior of nailed joints in wood is expanded in this study to account for several important characteristics of the connection. Nonlinear curve‐fitting procedures are used to develop prediction relationships for parameters A and B in equation for a variety of joint material and geometric characteristics. curves are experimentally obtained for 292 single‐shear nailed joints made with main and side members consisting of seven hardwoods indigenous to the Amazonian region of Brazil, four diameters of common wire nails (2.87, 3.33, 3.76, and 4.07 mm), three nominal moisture contents (6, 12, and 18%), and six nominal side‐member thicknesses (12, 19, 25, 31, 38, and 50 mm). The specific gravity (oven‐dry volume basis) of individual specimens ranges from 0.36 to 0.85. This range is larger than would be found among temperate zone species customarily used in construction. A contemporary statistical software package is used to perform regression analyses to predict A and B from 33 functions of various combinations of the nail diameter, side‐member thickness, and main‐ and side‐member specific gravity. Results indicate that the best prediction equation models the shape of the experimental curves with reasonable accuracy. When the estimated parameters are used to predict the curves for the 292 test joints, an average mean deviation of about was found. The negative value suggests that the model tended to overpredict joint stiffness.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Antonides, C. E., Vanderbilt, M. D., and Goodman, J. R. (1980). “Interlayer gap effect on nailed joint stiffness.” Wood Sci., 13(1), 41–46.
2.
CEB‐FIB model code for concrete structures. (1978). Vol. 1, Comité Euro‐International du Batiment, Paris, France.
3.
Draper, N. R., and Smith, H. (1971). Applied regression analysis. John Wiley and Sons, New York, N.Y.
4.
Foschi, R. O. (1974). “Load‐slip characteristics of nails.” Wood Sci., 7(1), 69–76.
5.
Johansen, K. W. (1949). Theory of timber connections, International Association for Bridge and Structural Engineering, 9, 249–262.
6.
King, E. G. (1979). “Introduction of new design methods into building codes.” Wall and floor systems: Design and performance of light‐frame structures, Forest Products Research Society, Madison, Wis.
7.
Kuenzi, E. W. (1955). “Theoretical design of a nailed or bolted joint under lateral load.” USDA FPL No. 1951, U.S. Department of Agriculture, Forest Products Laboratory, Madison, Wis.
8.
Mack, J. J. (1966). “The strength and stiffness of nailed joints under short duration loading.” Technical Paper No. 40, CSIRO, Australian Division of Forest Products, Melbourne, Australia.
9.
Mack, J. J. (1977). “The load‐displacement curve for nailed joints.” J. Inst. of Wood Sci., 7(6), 34–36.
10.
Malhotra, S. K., and Thomas, B. (1982). “Behavior of nailed timber joints with interface characteristics.” Wood Sci., 15(2), 161–171.
11.
McLain, T. E. (1976). “Curvilinear load‐slip relations in laterally loaded nailed joints.” Proc. P‐76‐16, Forest Products Research Society, Madison, Wis.
12.
Morris, E. N. (1970). “Analysis of the load‐slip curve for a nailed joint and the effect of moisture content.” J. Inst. of Wood Sci., 5(1), 3–9.
13.
National design specifications for wood construction. (1988). National Forest Products Association, Washington, D.C.
14.
Norén, B. (1962). “Nailed joints: A contribution to the theoretical analysis of yield and strength.” Proc. First Int. Symp. on Joints in Timber Engrg., 66–76.
15.
Pellicone, P. J. (1988). “Strength and ultimate slip characteristics of wood joints with elastomeric construction adhesives.” Forest Products J., 38(6), 55–59.
16.
Pellicane, P. J. (1990). “Load‐slip behavior of rubber‐based elastomeric construction adhesives in wood joints.” J. Test. Eval., 18(4), 256–264.
17.
Pellicane, P. J. (1991). “Mechanical behavior of nailed joints with various side member materials.” J. Test. Eval., 19(2), 97–106.
18.
Pellicane, P. J., and Bodig, J. (1981). “Sampling error in the bending strength distribution of dimension lumber.” Wood Sci. and Tech., 15, 211–225.
19.
Pellicane, P. J., and Bodig, J. (1984). “Comparison of nailed joint test methods.” J. Testing and Materials, 12(5), 261–267.
20.
Pellicane, P. J., Stone, J. L., and Vanderbilt, M. D. (1991). “Generalized model for lateral load slip of nailed joints.” J. Mater. Civ. Engrg., ASCE, 3(1), 60–77.
21.
Sà Ribeiro, R. A. (1984). “Mechanical properties of Amazonian hardwood lumber,” MS thesis, Colorado State University, Ft. Collins, Colo.
22.
Sà Ribeiro, R. A. (1990). “Improved model of the load‐slip behavior of nailed wood connections,” PhD thesis, Colorado State University, Ft. Collins, Colo.
23.
SAS/STAT User's Guide. (1988). Release 6.03 Edition, SAS Institute Inc., Cary, N.C.
24.
Wilkinson, T. L. (1971). “Theoretical lateral resistance of nailed joints.” J. Struct. Div., ASCE, 97(5), 1381–1390.
25.
Wilkinson, T. L. (1972a). “Effect of deformed shanks, prebored lead holes, and grain orientation on the elastic bearing constant for laterally loaded nailed joints.” FPL Res. Paper 192, U.S. Department of Agriculture, Forest Service, Madison, Wis.
26.
Wilkinson, T. L. (1972b). “Analysis of nailed joints with dissimilar members.” J. Struct. Div., ASCE, 98, 2005–2013.
27.
Wilkinson, T. L. (1974). “Elastic bearing constants for sheathing materials.” FPL Res. Pap. 224, Madison, Wis.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 4 • Issue 4 • November 1992
Pages: 385 - 398
Copyright
Copyright © 1992 ASCE.
History
Published online: Nov 1, 1992
Published in print: Nov 1992
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.