TY - GEN
T1 - Ultimate strength and design of lipped channel columns experiencing local/distortional mode interaction - Part II
T2 - 6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009
AU - Silvestre, Nuno
AU - Camotim, Dinar
AU - Young, Ben
PY - 2009/12/1
Y1 - 2009/12/1
N2 - This paper presents the results of an investigation on the ultimate strength and design of fixedended lipped channel columns experiencing local/distortional buckling mode interaction. First, a set of 26 fully fixed lipped channel columns with several cross-section dimensions and yield stresses were tested to determine their failure loads and to provide evidence of the local/distortional interaction phenomenon (see Part I of this paper). Then, a comparison between the column ultimate loads obtained from the tests and those determined from the current DSM provisions clearly indicates that the latter provide inaccurate and often very unsafe strength estimates. Based on the NLD and NDL approaches, a novel DSM including local/distortional interaction provisions is proposed and shown to provide very accurate lipped channel column strength predictions. Finally, some design recommendations are presented.
AB - This paper presents the results of an investigation on the ultimate strength and design of fixedended lipped channel columns experiencing local/distortional buckling mode interaction. First, a set of 26 fully fixed lipped channel columns with several cross-section dimensions and yield stresses were tested to determine their failure loads and to provide evidence of the local/distortional interaction phenomenon (see Part I of this paper). Then, a comparison between the column ultimate loads obtained from the tests and those determined from the current DSM provisions clearly indicates that the latter provide inaccurate and often very unsafe strength estimates. Based on the NLD and NDL approaches, a novel DSM including local/distortional interaction provisions is proposed and shown to provide very accurate lipped channel column strength predictions. Finally, some design recommendations are presented.
KW - Direct Strength Method (DSM)
KW - Distortional and global slenderness
KW - High strength mild steel
KW - Lipped channel columns
KW - Local/distortional mode interaction
KW - Ultimate strength
UR - http://www.scopus.com/inward/record.url?scp=77955068756&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:77955068756
SN - 9789889914059
T3 - ICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics
SP - 470
EP - 479
BT - ICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics
Y2 - 16 December 2009 through 18 December 2009
ER -