Three-dimensional modeling of steel portal frame buildings
The realistic strength and deflection behavior of industrial and commercial steel portal frame buildings are understood only if the effects of rigidity of end frames and profiled steel claddings are included. The conventional designs ignore these effects and are very much based on idealized two-dimensional (2D) frame behavior. Full-scale tests of a 1212 m steel portal frame building under a range of design load cases indicated that the observed deflections and bending moments in the portal frame were considerably different from those obtained from a 2D analysis of frames ignoring these effects. Three-dimensional (3D) analyses of the same building, including the effects of end frames and cladding, were carried out, and the results agreed well with full-scale test results. Results clearly indicated the need for such an analysis and for testing to study the true behavior of steel portal frame buildings. It is expected that such a 3D analysis will lead to lighter steel frames as the maximum moments and deflections are reduced.
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|Item Type:||Journal Article|
|Additional Information:||Compilation and indexing terms, Copyright 2013 Elsevier Inc.
Steel portal frame buildings
|Keywords:||Steel structures, Buildings, Structural frames, Structural analysis, Mathematical models, Strength of materials, Deflection (structures), Cladding (coating)|
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 1999 American Society of Civil Engineers|
|Deposited On:||14 Nov 2013 23:31|
|Last Modified:||01 Sep 2015 05:37|
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