Direct Second-Order Analysis for the Design of Steel Structures

2006 ◽  
Author(s):  
A. Surovek ◽  
D. Camotim ◽  
J. Hajjar ◽  
L. Teh ◽  
D. White ◽  
...  
Keyword(s):  
Steel Structures ◽  
Second Order ◽  
Order Analysis

scholarly journals CONSIDERATIONS ON THE DIFFUSE SEISMICITY ASSUMPTION

2015 ◽  
Vol 12 (2) ◽  
Author(s):  
Jorge Daniel Riera ◽  
Ignacio Iturrioz
Keyword(s):  
Steel Structures ◽  
Direct Analysis ◽  
Second Order ◽  
Effective Length ◽  
Order Effects ◽  
Analysis Method ◽  
Order Analysis ◽  
3D Space ◽  
Effective Length Method ◽  
Diffuse Seismicity

Second-order effects were historically included by the effective length method (K concept). All the studies about that methodology have been developed in frame plane, with regular rectangular frames. The new way to include those effects is the use of second-order analysis, direct analysis method or alternative simplified options. This methodology was included in ANSI AISC360 in the 2005 version and in the 2010 version. As before, the studies already developed for DAM analysis are in plane. In this paper, the K concept is revisited by numerical analysis, and extended to the 3D space. Using models of symmetric and non-symmetric industrial steel structures in plane, 3D stability analyses were developed, and the results were compared with plane behavior. Several conclusions and recommendations were exposed, resulting from the analyzed models. Keywords: Second-order analyses, steel structures, irregular 3D frames.

Discrete optimization of semi-rigid steel frames in second-order analysis

2019 ◽  
Author(s):  
Marcos Henrique Bossardi Borges ◽  
Adelano Esposito ◽  
Herbert Gomes
Keyword(s):  
Discrete Optimization ◽  
Steel Frames ◽  
Second Order ◽  
Order Analysis

Optimal design of planar frames based on approximate second-order analysis

2004 ◽  
Vol 36 (3) ◽  
pp. 281-290 ◽  
Author(s):  
Enrique Hernandez-Montes ◽  
Luisa Maria Gil-Martin ◽  
Mark Aschheim
Keyword(s):  
Optimal Design ◽  
Second Order ◽  
Order Analysis ◽  
Planar Frames
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