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Author(s):	Ozaki, Fuminobu
Title:	A study on a theoretical relationship between strain hardening of steel and plastic region length in a steel beam subjected to fire
Abstract:	This paper presents a relationship between strain hardening of steel and plastic region length in a steel beam subjected to fire. A theoretical simple fire response analysis is proposed to investigate elasto-plastic behavior of the statically indeterminate heated beam. From observation of parametric calculations, it is clarified that large plastic region length in the beam, which is induced by the large strain hardening, is effective to avoiding strain concentration. This contributes to the robust attenuation of the thermal stress at the fire. Theoretische Beziehung zwischen Verfestigung von Stahl und Länge der plastischen Zone von brandbeanspruchten Stahlträgern. Die Veröffentlichung stellt die Beziehung zwischen der Verfestigung von Stahl und der Länge der plastischen Zone von Stahlträgern im Brandfall dar. Mit Hilfe eines analytischen Modells wird das elastisch-plastische Verhalten statisch unbestimmter Träger bei Erwärmung untersucht. Eine Parameterstudie zeigt, dass Dehnungskonzentrationen und hohe thermische Spannungen durch ausgedehnte plastische Zonen vermieden werden.
Source:	Stahlbau 83 (2014), No. 9
Page/s:	652-656
Language of Publication:	English

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