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Cyclic behavior and numerical modelling of a semi‐rigid frame

Cyclic behavior and numerical modelling of a semi‐rigid frame It is clear that semi‐rigid frames exhibit completely non‐linear behaviour under cyclic loading due to gradual yielding of connection components. The current study presents the experimental results from the test of a semi‐rigid frame specimen, comprising a single storey and one bay, and the analysis results obtained from a finite element model of the specimen. In this study, semi‐rigid joints with header plates are used for beam‐tocolumn connections. The initial stiffness and moment‐carrying capacity of the connection, designed as a semi‐rigid and partial strength connection type, were determined in accordance with Eurocode 3. In the modelling of the semi‐rigid beam‐to‐column connection behaviour, four‐parameter non‐linear representation of the moment—rotation curve obtained using the Ramberg‐Osgood formula was employed. Loading of the test specimen consisted of quasi‐static cycles with displacement control. The cyclic response of the specimen is characterized by a stable hysteretic behaviour. When comparing the envelope of the hysteresis loops from the cyclic test of the specimen with the pushover curve achieved by non‐linear finite element analysis, the model gives a good prediction of the ultimate strength and initial stiffness of the frame. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Steel Construction: Design and Research Wiley

Cyclic behavior and numerical modelling of a semi‐rigid frame

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Publisher
Wiley
Copyright
"Copyright © 2010 Wiley Subscription Services, Inc., A Wiley Company"
ISSN
1867-0520
eISSN
1867-0539
DOI
10.1002/stco.201010018
Publisher site
See Article on Publisher Site

Abstract

It is clear that semi‐rigid frames exhibit completely non‐linear behaviour under cyclic loading due to gradual yielding of connection components. The current study presents the experimental results from the test of a semi‐rigid frame specimen, comprising a single storey and one bay, and the analysis results obtained from a finite element model of the specimen. In this study, semi‐rigid joints with header plates are used for beam‐tocolumn connections. The initial stiffness and moment‐carrying capacity of the connection, designed as a semi‐rigid and partial strength connection type, were determined in accordance with Eurocode 3. In the modelling of the semi‐rigid beam‐to‐column connection behaviour, four‐parameter non‐linear representation of the moment—rotation curve obtained using the Ramberg‐Osgood formula was employed. Loading of the test specimen consisted of quasi‐static cycles with displacement control. The cyclic response of the specimen is characterized by a stable hysteretic behaviour. When comparing the envelope of the hysteresis loops from the cyclic test of the specimen with the pushover curve achieved by non‐linear finite element analysis, the model gives a good prediction of the ultimate strength and initial stiffness of the frame.

Journal

Steel Construction: Design and ResearchWiley

Published: Sep 1, 2010

Keywords: ; ; ; ;

References