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News: Steel Construction 3/2015

News: Steel Construction 3/2015 M. J. Andreassen/J. Jönsson · Joint and column behaviour of slotted cold-formed steel studs Completed Phd theses Behaviour of cylindrically curved steel Robustness of car parks subjected to – the influence of some parameters that panels under in-plane stresses localized fire affect the robustness of this type of building are studied. The objective of this Phd thesis by João The research work presented in this Pedro Martins (University of Coimbra, thesis by Cécile Haremza (ECCS Brus- Due to the low slenderness of the com- ISISE) is to analyse the stability behav- sels) is based on the European RFCS posite beam, high deformations are neces- iour of curved steel panels under gener- ROBUSTFIRE project, and the Na- sary to develop catenary action, and it is alised in-plane compressive stresses and tional IMPACTFIRE project. The vari- shown that in these conditions, this topo- logy of composite joint does not possess to develop design rules which overcome ous stages of this work are related to a sufficient capacity of rotation to reach the some limitations of European Stand- case study involving a structural config- equilibrium deformed configuration. ards. For the simplest case of pure com- uration that represents a typical open car pressive axial stresses, the most relevant park building. The main objective is to Supervisor: Aldina Santiago works have been revisited and analysed. provide a detailed analysis of the heated Defence of dissertation: 6 January 2015 In what concerns the elastic critical joint behaviour subject to variable bend- stress of curved panels, it was concluded ing moments and axial loads when the that the expressions which are currently column fails due to a localised fire. available return non negligible errors. Relying on the finite element method In this work: and on an analytical formulation based – seven experimental tests are performed; on energy methods, new expressions – detailed 3D numerical models of the presenting significant improvements and heated joint are developed; allowing obtaining the elastic critical stress also for panels under non uniform in-plane loading are presented. Con- cerning the ultimate resistance, the pro- posed method also shows improve- ments, but its main contribution is that it allows obtaining the ultimate resist- ance also for panels under pure in-plane bending. Supervisors: Luís Simões da Silva, António Reis Defence of dissertation: Numerical and analytical M-N curves at 4 November 2014 ambient temperature Steel Construction 8 (2015), No. 3 161 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Steel Construction: Design and Research Wiley

News: Steel Construction 3/2015

Steel Construction: Design and Research , Volume 8 (3) – Sep 1, 2015

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Publisher
Wiley
Copyright
"Copyright © 2015 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
1867-0520
eISSN
1867-0539
DOI
10.1002/stco.201590033
Publisher site
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Abstract

M. J. Andreassen/J. Jönsson · Joint and column behaviour of slotted cold-formed steel studs Completed Phd theses Behaviour of cylindrically curved steel Robustness of car parks subjected to – the influence of some parameters that panels under in-plane stresses localized fire affect the robustness of this type of building are studied. The objective of this Phd thesis by João The research work presented in this Pedro Martins (University of Coimbra, thesis by Cécile Haremza (ECCS Brus- Due to the low slenderness of the com- ISISE) is to analyse the stability behav- sels) is based on the European RFCS posite beam, high deformations are neces- iour of curved steel panels under gener- ROBUSTFIRE project, and the Na- sary to develop catenary action, and it is alised in-plane compressive stresses and tional IMPACTFIRE project. The vari- shown that in these conditions, this topo- logy of composite joint does not possess to develop design rules which overcome ous stages of this work are related to a sufficient capacity of rotation to reach the some limitations of European Stand- case study involving a structural config- equilibrium deformed configuration. ards. For the simplest case of pure com- uration that represents a typical open car pressive axial stresses, the most relevant park building. The main objective is to Supervisor: Aldina Santiago works have been revisited and analysed. provide a detailed analysis of the heated Defence of dissertation: 6 January 2015 In what concerns the elastic critical joint behaviour subject to variable bend- stress of curved panels, it was concluded ing moments and axial loads when the that the expressions which are currently column fails due to a localised fire. available return non negligible errors. Relying on the finite element method In this work: and on an analytical formulation based – seven experimental tests are performed; on energy methods, new expressions – detailed 3D numerical models of the presenting significant improvements and heated joint are developed; allowing obtaining the elastic critical stress also for panels under non uniform in-plane loading are presented. Con- cerning the ultimate resistance, the pro- posed method also shows improve- ments, but its main contribution is that it allows obtaining the ultimate resist- ance also for panels under pure in-plane bending. Supervisors: Luís Simões da Silva, António Reis Defence of dissertation: Numerical and analytical M-N curves at 4 November 2014 ambient temperature Steel Construction 8 (2015), No. 3 161

Journal

Steel Construction: Design and ResearchWiley

Published: Sep 1, 2015

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