Abstract
This paper presents an analytical solution for lateral-torsional buckling strength and stiffness requirements of I-girders with discrete torsional bracings subjected to non-uniform bending. The critical moment and torsional stiffness requirement are derived by using an energy method for an arbitrary number of bracing points. An equivalent moment factor is introduced to evaluate buckling moments of fully braced I-girders. From the results, it is found that proposed solutions agree well with results of finite element analyses regardless of the number of bracing points, while results for the equivalent continuous brace stiffness concept are not suitable for multiple discrete torsionally-braced beams.
| Original language | English |
|---|---|
| Title of host publication | Procedia Engineering |
| Pages | 264-271 |
| Number of pages | 8 |
| Volume | 14 |
| DOIs | |
| Publication status | Published - 2011 |
| Event | 12th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC12 - Hong Kong, Hong Kong Duration: 2011 Jan 26 → 2011 Jan 28 |
Other
| Other | 12th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC12 |
|---|---|
| Country | Hong Kong |
| City | Hong Kong |
| Period | 11/1/26 → 11/1/28 |
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Keywords
- Energy method
- Lateral-torsional buckling
- Stiffness requirement
- Torsional bracing
ASJC Scopus subject areas
- Engineering(all)
Cite this
Lateral-torsional buckling of discretely-braced I-girder. / Lee, Hak Eun; Nguyen, C. T.; Moon, J. H.; Joo, H. S.
Procedia Engineering. Vol. 14 2011. p. 264-271.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Lateral-torsional buckling of discretely-braced I-girder
AU - Lee, Hak Eun
AU - Nguyen, C. T.
AU - Moon, J. H.
AU - Joo, H. S.
PY - 2011
Y1 - 2011
N2 - This paper presents an analytical solution for lateral-torsional buckling strength and stiffness requirements of I-girders with discrete torsional bracings subjected to non-uniform bending. The critical moment and torsional stiffness requirement are derived by using an energy method for an arbitrary number of bracing points. An equivalent moment factor is introduced to evaluate buckling moments of fully braced I-girders. From the results, it is found that proposed solutions agree well with results of finite element analyses regardless of the number of bracing points, while results for the equivalent continuous brace stiffness concept are not suitable for multiple discrete torsionally-braced beams.
AB - This paper presents an analytical solution for lateral-torsional buckling strength and stiffness requirements of I-girders with discrete torsional bracings subjected to non-uniform bending. The critical moment and torsional stiffness requirement are derived by using an energy method for an arbitrary number of bracing points. An equivalent moment factor is introduced to evaluate buckling moments of fully braced I-girders. From the results, it is found that proposed solutions agree well with results of finite element analyses regardless of the number of bracing points, while results for the equivalent continuous brace stiffness concept are not suitable for multiple discrete torsionally-braced beams.
KW - Energy method
KW - Lateral-torsional buckling
KW - Stiffness requirement
KW - Torsional bracing
UR - http://www.scopus.com/inward/record.url?scp=80054787548&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80054787548&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2011.07.032
DO - 10.1016/j.proeng.2011.07.032
M3 - Conference contribution
AN - SCOPUS:80054787548
VL - 14
SP - 264
EP - 271
BT - Procedia Engineering
ER -