TECHNICAL PAPERS
Aug 10, 2009

Stability Capacity and Lateral Bracing Requirements of Wood Beam-Columns

Publication: Journal of Structural Engineering
Volume 136, Issue 2

Abstract

This paper presents a study on the stability capacity and lateral bracing requirements of wood beam-columns subjected to biaxial eccentric compression loads. Material property tests and wood beam-column tests were conducted to provide input parameters and verification to a finite element method based numerical analysis model. The model provided good predictions of the maximum compression load, midspan lateral deflection and lateral bracing force of the wood beam-columns. A parametric study was conducted for the effect of the lateral bracing stiffness, load eccentricity and initial lateral deflections. The adequacy of the 2% rule-of-thumb, Winter’s and Plaut’s methods was also studied by comparing to the test results of the lateral bracing force. The developed model and its output can be used to improve the design methods of the lateral bracing systems of wood beam-columns.

Get full access to this article

View all available purchase options and get full access to this article.

References

Bazan, I. M. M. (1980). “Ultimate bending strength of timber beams.” Ph.D. thesis, Nova Scotia Technological College, Halifax, N.S.
Buchanan, A. H. (1984). “Strength model and design methods for bending and axial load interaction in timber members.” Ph.D. thesis, Dept. of Civil Engineering, Univ. of British Columbia, Vancouver, Canada.
Buchanan, A. H. (1986). “Combined bending and axial loading in lumber.” J. Struct. Eng., 112(12), 2592–2609.
Foschi, R. O. (1977). “Analysis of wood diaphragm and trusses. Part II: Truss plate connections.” Can. J. Civ. Eng., 4(3), 353–362.
Lau, W. W. S. (2000). “Strength model and FEM analysis of wood beam columns in truss application.” Ph.D. thesis, Dept. of Wood Science, Univ. of British Columbia, Vancouver, Canada.
Medland, I. C. (1977). “A basis for the design of column bracing.” Struct. Eng., 55, 301–307.
Munch-Andersen, J. (2004). “Bracing of timber members in compression.” Proc., 37th Meeting of the Int. Council for Research and Innovation in Building and Construction, CIB-W18/37-15-4, Edinburgh, UK.
O’Halloran, M. R. (1973). “Curvilinear stress strain relationship for wood in compression.” Ph.D. thesis, Colorado State Univ., Fort Collins, Colo.
Olhoff, N., and Akesson, B. (1991). “Minimum stiffness of optimally located supports for maximum value of column buckling loads.” Struct. Optim., 3, 163–175.
Plaut, R. H. (1993). “Requirements for lateral bracing of columns with two spans.” J. Struct. Eng., 119(10), 2913–2931.
Plaut, R. H., and Yang, J. -G. (1993). “Lateral bracing forces in columns with two unequal spans.” J. Struct. Eng., 119(10), 2896–2912.
Segedin, C. M., and Medland, I. C. (1978). “The buckling of inter-braced columns.” Int. J. Solids Struct., 14, 375–384.
Song, X. (2009). “Stability and reliability analysis of metal plate connected wood truss assemblies.” Ph.D. thesis, Dept. of Wood Science, Univ. of British Columbia, Vancouver, Canada.
Song, X., and Lam, F. (2009) “Stability analysis of laterally braced wood beam-columns subjected to biaxial eccentric loading.” Comput. Struct., 87, 1058–1066.
Throop, C. M. (1947). “Suggestions for safe lateral bracing design.” Eng. News-Rec., February 6, 1947, 90–91.
Underwood, C. R., Woeste, F. E., Dolan, J. D., and Holzer, S. M. (2001). “Permanent bracing design for MPC wood roof truss webs and chords.” For. Prod. J., 51(7/8), 73–81.
Waltz, M. E., Jr., McLain, T. E., Miller, T. H., and Leichti, R. J. (2000). “Discrete bracing analysis for light frame wood truss compression webs.” J. Struct. Eng., 126(9), 1086–1092.
Weibull, W. (1939). “A statistical theory of the strength of material.” Proc. Royal Swedish Inst. Eng. Res., No. 151:1, Royal Swedish Institute for Engineering Research, Stockholm, Sweden.
Winter, G. (1958). “Lateral bracing of columns and beams.” American Society of Civil Engineers, Transaction, Paper No. 3044, 807–826.
Ylinen, A. (1956). “A method of determining the buckling stress and the required cross sectional area for centrally loaded straight columns in elastic and inelastic range.” IABSA Publications, 16, 529–549.
Zahn, J. J. (1982). “Strength of lumber under combined bending and compression.” Forest Products Laboratory: Research Paper FPL391.
Zhang, H. Y., and Beliveau, J. G. (1993). “Minimum lateral stiffness for equally spaced braces in columns.” J. Eng. Mech., 119(9), 1888–1897.

Information & Authors

Information

Published In

Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 136Issue 2February 2010
Pages: 211 - 218

History

Received: Jan 24, 2008
Accepted: Aug 7, 2009
Published online: Aug 10, 2009
Published in print: Feb 2010

Permissions

Request permissions for this article.

Authors

Affiliations

Xiaobin Song, Ph.D., S.M.ASCE [email protected]
Dept. of Wood Science, Univ. of British Columbia, 2424 Main Mall, Vancouver BC, Canada V6T 1Z4 (corresponding author). E-mail: [email protected]
Frank Lam, M.ASCE [email protected]
P.E.
Professor, Dept. of Wood Science, Univ. of British Columbia, 2424 Main Mall, Vancouver BC, Canada V6T 1Z4. E-mail: [email protected]

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.

Cited by

View Options

Get Access

Access content

Please select your options to get access

Log in/Register Log in via your institution (Shibboleth)
ASCE Members: Please log in to see member pricing

Purchase

Save for later Information on ASCE Library Cards
ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.

Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
ASCE Library Card (5 downloads)
$105.00
Add to cart
ASCE Library Card (20 downloads)
$280.00
Add to cart
Buy Single Article
$35.00
Add to cart

Get Access

Access content

Please select your options to get access

Log in/Register Log in via your institution (Shibboleth)
ASCE Members: Please log in to see member pricing

Purchase

Save for later Information on ASCE Library Cards
ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.

Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
ASCE Library Card (5 downloads)
$105.00
Add to cart
ASCE Library Card (20 downloads)
$280.00
Add to cart
Buy Single Article
$35.00
Add to cart

Media

Figures

Other

Tables

Share

Share

Copy the content Link

Share with email

Email a colleague

Share