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
N1 - Funding Information:
This research was partially supported by a grant (code 07-Technology Innovation-A01) from Construction Technology Innovation Program funded by the Ministry of Construction & Transportation of Korean Government and partially supported by the Korea University Grant .
PY - 2011/11
Y1 - 2011/11
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
AN - SCOPUS:79960172208
VL - 67
SP - 1773
EP - 1787
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
SN - 0143-974X
IS - 11
ER -