Abstract
Moment modification factors of the I-girder with trapezoidal web corrugations subjected to concentrated load, applied at different heights on the cross section and various end restraint conditions, are investigated. The moment modification factors are obtained by finite element buckling analyses. The new FEM program is developed by using beam elements and new general formulas of cross-section properties as well as a new warping constant of the I-girder with trapezoidal web corrugations. The theoretical results of moment modification factors are compared with commercial finite element software (ABAQUS) using shell elements. A series of finite element analyses with different corrugation profiles and lengths is performed. Through comparative numerical studies, the theoretical results are successfully verified. The moment modification factors from the SSRC Guide are compared with present FEM results. The new values of the variable Cb, the moment modification factor, in the SSRC Guide are proposed as the variable Cb,c to improve the accuracy of lateral-torsional buckling strength.
| Original language | English |
|---|---|
| Pages (from-to) | 1773-1787 |
| Number of pages | 15 |
| Journal | Journal of Constructional Steel Research |
| Volume | 67 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2011 Nov 1 |
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Keywords
- End restraint conditions
- I-girder
- Load height effects
- Moment modification factor
- Trapezoidal web corrugations
ASJC Scopus subject areas
- Building and Construction
- Civil and Structural Engineering
- Mechanics of Materials
- Metals and Alloys
Cite this
Moment modification factor of I-girder with trapezoidal-web-corrugations considering concentrated load height effects. / Nguyen, Ngoc Duong; Han, Seung Ryong; Lee, Gyu Sei; Kang, Young Jong.
In: Journal of Constructional Steel Research, Vol. 67, No. 11, 01.11.2011, p. 1773-1787.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Moment modification factor of I-girder with trapezoidal-web-corrugations considering concentrated load height effects
AU - Nguyen, Ngoc Duong
AU - Han, Seung Ryong
AU - Lee, Gyu Sei
AU - Kang, Young Jong
PY - 2011/11/1
Y1 - 2011/11/1
N2 - Moment modification factors of the I-girder with trapezoidal web corrugations subjected to concentrated load, applied at different heights on the cross section and various end restraint conditions, are investigated. The moment modification factors are obtained by finite element buckling analyses. The new FEM program is developed by using beam elements and new general formulas of cross-section properties as well as a new warping constant of the I-girder with trapezoidal web corrugations. The theoretical results of moment modification factors are compared with commercial finite element software (ABAQUS) using shell elements. A series of finite element analyses with different corrugation profiles and lengths is performed. Through comparative numerical studies, the theoretical results are successfully verified. The moment modification factors from the SSRC Guide are compared with present FEM results. The new values of the variable Cb, the moment modification factor, in the SSRC Guide are proposed as the variable Cb,c to improve the accuracy of lateral-torsional buckling strength.
AB - Moment modification factors of the I-girder with trapezoidal web corrugations subjected to concentrated load, applied at different heights on the cross section and various end restraint conditions, are investigated. The moment modification factors are obtained by finite element buckling analyses. The new FEM program is developed by using beam elements and new general formulas of cross-section properties as well as a new warping constant of the I-girder with trapezoidal web corrugations. The theoretical results of moment modification factors are compared with commercial finite element software (ABAQUS) using shell elements. A series of finite element analyses with different corrugation profiles and lengths is performed. Through comparative numerical studies, the theoretical results are successfully verified. The moment modification factors from the SSRC Guide are compared with present FEM results. The new values of the variable Cb, the moment modification factor, in the SSRC Guide are proposed as the variable Cb,c to improve the accuracy of lateral-torsional buckling strength.
KW - End restraint conditions
KW - I-girder
KW - Load height effects
KW - Moment modification factor
KW - Trapezoidal web corrugations
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U2 - 10.1016/j.jcsr.2011.05.002
DO - 10.1016/j.jcsr.2011.05.002
M3 - Article
VL - 67
SP - 1773
EP - 1787
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
SN - 0143-974X
IS - 11
ER -