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Earthquake resilient steel braced frames with controlled rocking and energy dissipating fuses

Author(s):







Medium: journal article
Language(s): English
Published in: Steel Construction, , n. 3, v. 4
Page(s): 171-175
DOI: 10.1002/stco.201110023
Abstract:

A new type of seismic resistant structural steel braced-frame system is introduced that employs controlled rocking, elastic post tensioning, and replaceable fuses to resist earthquake shaking with limited structural damage. Through the use of capacity design principles, inelastic energy dissipation is confined to replaceable fuses while the controlled rocking and elastic post tensioning provide self-centering action to eliminate residual drift. Quasi-static cyclic tests and dynamic shake table tests of large-scale specimens confirm that the system can sustain extreme earthquake ground shaking with story drift ratios up to 3 % without structural damage. Owing to the well-defined rocking mechanism, analysis and design of the system is straightforward. Work is ongoing to develop design criteria and guidelines to facilitate practical implementation of these system in building design and construction.

Keywords:
seismic design earthquake self-centering rocking steel braced frame replaceable fuses energy dissipation residual drift
Available from: Refer to publisher
Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1002/stco.201110023.
  • About this
    data sheet
  • Reference-ID
    10065864
  • Published on:
    06/10/2011
  • Last updated on:
    13/08/2014
 
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