Effect of Flange Width-Thickness Ratio on Eccentrically Braced Frames Link Cyclic Rotation Capacity

An analytical study was conducted to investigate the influence of the flange width-thickness ratio on the rotation capacity of links in eccentrically braced frames. Finite element models, verified using experimental data, were used to investigate the performance of 112 links. Models simulated strength degradation associated with flange and web local buckling that may occur during cyclic loading. The models provided data for short, intermediate, and long links with a range of flange width-thickness ratios. Results indicate that a relaxation of the flange width-thickness ratio requirement in current AISC seismic design provisions is justified. It was also found, however, that the provisions specify nonconservative design rotations for some intermediate links. This is shown to be related to web stiffener spacing and not the flange width-thickness ratio.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Authors:
  • Richards, Paul W
  • Uang, Chia-Ming
• Publication Date: 2005-10

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References;
• Pagination: pp 1546-1552
• Serial:
  • Journal of Structural Engineering
  • Volume: 131
  • Issue Number: 10
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Bracing; Buckling; Earthquake resistant design; Eccentricity; Finite element method; Flanges; Frames; Mathematical models; Repeated loads
• Uncontrolled Terms: Failure modes; Links; Width-thickness ratio
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01007059
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 4 2005 10:40AM