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  4. Proposed Stiffener Spacing Requirements for the Seismic Design of Short Links in Eccentrically Braced Steel Frames
 
research article

Proposed Stiffener Spacing Requirements for the Seismic Design of Short Links in Eccentrically Braced Steel Frames

Skretas, Nikolaos G.
•
Karavasilis, Theodore L.
•
Lignos, Dimitrios G.  
June 1, 2023
Journal Of Structural Engineering

Links in eccentrically braced frames (EBFs) are designed with transverse web stiffeners to achieve the desired seismic performance targets established in current design standards. Prior studies have suggested that stiffener spacing requirements in the standards may be conservative. This paper proposes new stiffener spacing design requirements for short EBF links. The proposed limits were established on the basis of a methodology that combines a numerical solution of the classical problem of inelastic plate buckling of a thick plate under shear thrusts along with comparisons with available experimental data. The resultant design equation was verified through complementary continuum finite-element simulations of 18 wide-flange short links under symmetric cyclic loading. The finite-element simulations suggested that the proposed design equation reduce the stiffener requirements by about 35%, on average, relative to the current stiffener spacing requirements for short EBF links. Limitations and suggestions of future work are discussed.

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Type
research article
DOI
10.1061/JSENDH.STENG-11756
Web of Science ID

WOS:000971812900019

Author(s)
Skretas, Nikolaos G.
Karavasilis, Theodore L.
Lignos, Dimitrios G.  
Date Issued

2023-06-01

Publisher

ASCE-AMER SOC CIVIL ENGINEERS

Published in
Journal Of Structural Engineering
Volume

149

Issue

6

Article Number

04023058

Subjects

Construction & Building Technology

•

Engineering, Civil

•

Construction & Building Technology

•

Engineering

•

eccentrically braced frames (ebf)

•

stiffener spacing

•

stability

•

plate buckling

•

short links

•

seismic effects

•

seismic design

•

shear links

•

experimental validation

•

behavior

•

connections

•

plates

Editorial or Peer reviewed

REVIEWED

Written at

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June 5, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/197965
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