Reduced Brace Section (RXS) Proof of Concept: Phase 1B

View/ Open
Issue Date
2006-01Author
Bonetti, Santiago Antonio
Roddis, W. M. Kim
Matamoros, Adolfo B.
Publisher
University of Kansas Center for Research, Inc.
Type
Technical Report
Is part of series
SM Report;81
Published Version
https://iri.ku.edu/reportsMetadata
Show full item recordAbstract
This report presents the results from the second phase of a proof-of-concept series of tests of the reduced braced section (RXS) system. This system is intended to provide a cost-effective alternative for the design of Concentrically Braced Frames (CBFs) under earthquake loads. The second test investigated the behavior of the RXS system under cyclic loading. The hysteretic behavior of the specimen indicated that the behavior of the RXS system was sensitive to the eccentricity of the load imposed on the brace. Eccentric loading caused premature local bucking of the reduced section, which reduced the ability
of the system to dissipate energy under repeated load reversals into the nonlinear range of response.
The behavior observed during the test shows that local buckling is a mode of failure that must be prevented in this type of system because of its adverse effect on the ability of the system to dissipate energy. Also, the design of the system must take into account a minimum eccentricity of the load transmitted to the brace at the brace-frame connection. An alternative to improve the behavior of the system under repeated load reversals is to reinforce the reduced section in order to increase the local bucking load. This report includes the applicable information specified in TEST REPORTING REQUIREMENTS [AISC, 2002, S9].
Collections
Citation
Bonetti, S., Roddis, W.M. Kim, and Matamoros, A., "Reduced Brace Section (RXS) Proof of Concept: Phase 1B," SM Report No. 81, The University of Kansas Center for Research, Inc., Lawrence, Kansas, January 2006, 57 pp.
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.