Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Analytical investigation of the cyclic behavior and plastic hinge formation in deep wide-flange steel beam-columns
 
research article

Analytical investigation of the cyclic behavior and plastic hinge formation in deep wide-flange steel beam-columns

Elkady, Ahmed  
•
Lignos, Dimitrios  
2015
BULLETIN OF EARTHQUAKE ENGINEERING

This paper investigates the cyclic behavior of deep wide-flange sections, used as columns in steel Special Moment Frames (SMFs), through detailed finite element (FE) analysis. A wide range of wide-flange sections is subjected to symmetric cyclic lateral loading combined with different levels of constant compressive axial load ratios representing the loading conditions of interior steel columns in SMFs. The FE simulations demonstrate that wide-flange beam-columns, with web and flange slenderness ratios near the current compactness limits of seismic design provisions (AISC 341-10), experience rapid cyclic deterioration in flexural strength under high axial load ratios. It is also found that deep wide-flange slender sections shorten axially to about 10 % of their length due to severe flange and web local buckling. Based on the FE simulations, for bottom story columns, where axial load ratios are in the range of 20–35 %, a reduction to about two thirds of the current compactness limit for highly ductile members would achieve a 4 % chord rotation while maintaining a flexural strength larger than 80 % of the expected plastic flexural strength of a steel column. The FE simulation results also suggest that the pre-capping rotation predicted by current modeling recommendations for steel components (PEER/ATC 72-1) is overestimated for sections with high web and flange slenderness ratios undergoing monotonic and/or cyclic lateral loading combined with high axial load levels. © 2014, Springer Science+Business Media Dordrecht.

  • Details
  • Metrics
Type
research article
DOI
10.1007/s10518-014-9640-y
Author(s)
Elkady, Ahmed  
Lignos, Dimitrios  
Date Issued

2015

Publisher

Springer Verlag

Published in
BULLETIN OF EARTHQUAKE ENGINEERING
Volume

13

Issue

4

Start page

1097

End page

1118

Subjects

Wide-flange sections

•

Steel beam-columns

•

Finite element analysis

•

Axial shortening

•

Strength deterioration

•

Pre-capping plastic rotation

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
RESSLAB  
Available on Infoscience
February 1, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/122912
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés