Nonlinear Plastic Hinge Analysis of Three-Dimensional Steel Frames in Fire
Publication: Journal of Structural Engineering
Volume 130, Issue 7
Abstract
A beam-column model for simulating the inelastic behavior of three-dimensional (3D) steel frames is presented. Yielding of the steel section is modeled by two nested stress-resultant surfaces and takes into consideration the softening effect of steel material at elevated temperature. Derivation of the inelastic stiffness of a 3D beam-column element is presented. Degradation of the strength of the material at elevated temperatures is formulated according to the “effective yield strength” concept. Application of the method is demonstrated by analyzing and studying the behavior of steel members and a 3D multistory frame exposed to fire.
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Information
Published In
Journal of Structural Engineering
Volume 130 • Issue 7 • July 2004
Pages: 981 - 990
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Jan 6, 2003
Accepted: Jul 22, 2003
Published online: Jun 15, 2004
Published in print: Jul 2004
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