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Creep Behavior of Flush Endplate Connections at Elevated Temperatures Due to Fire

AHMAD H. EL GHOR, ELIE G. HANTOUCHE, MOHAMMED ALI MOROVAT, MICHAEL D. ENGELHARDT

Abstract


This paper highlights some preliminary results of a computational study investigating the effect of thermal creep of structural steel on the behavior of steel beam-column connections subjected to elevated temperatures due to fire. Through a series of finite element simulations that were partly verified against experimental data, a practical methodology was developed to investigate the time-dependent nature of the behavior of flush endplate beam-column connections at elevated temperatures. In this methodology, time effects on the strength and rotational capacity of flush endplate connections are explicitly presented in the form of isochronous force-rotation curves. The isochronous representation provides a possible framework for including creep effects in predicting the response of structural steel connections to fire.

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