Journal article
Analysis and Design of Two-Tiered Steel Braced Frames under In-Plane Seismic Demand
Journal of structural engineering (New York, N.Y.), Vol.142(11), 04016115
11/01/2016
DOI: 10.1061/(ASCE)ST.1943-541X.0001568
Abstract
A seismic design strategy, which is intended to be implemented within the framework of the U.S. seismic design provisions for steel structures, is presented for single-story steel concentrically braced frames that are divided into two tiers. In this method, the columns are designed to resist the axial loads acting in combination with the in-plane flexural demand resulting from uneven distribution of brace inelastic deformations over the frame height. This design procedure, which establishes enhanced requirements beyond the 2010 edition of the U.S. seismic design provisions, prevents concentration of deformation in one tier and causes frame nonlinear deformation to be distributed between the tiers. The column bending moments depend on the story shear resistance that develops in each tier when the bracing members are at buckling and in the postbuckling range. The method also aims to control tier drifts to protect the bracing members from excessive inelastic demand, which could cause brace fracture. Nonlinear static and dynamic analyses are performed to validate the proposed design procedure.
Details
- Title: Subtitle
- Analysis and Design of Two-Tiered Steel Braced Frames under In-Plane Seismic Demand
- Creators
- Ali Imanpour - Polytechnique MontréalRobert Tremblay - Polytechnique MontréalLarry A Fahnestock - Univ. of Illinois at Urbana-Champaign Associate Professor, Dept. of Civil and Environmental Engineering, , 205 North Mathews Ave., Urbana, IL 61801Christopher Stoakes - University of Iowa, Civil and Environmental Engineering
- Resource Type
- Journal article
- Publication Details
- Journal of structural engineering (New York, N.Y.), Vol.142(11), 04016115
- Publisher
- American Society of Civil Engineers
- DOI
- 10.1061/(ASCE)ST.1943-541X.0001568
- ISSN
- 0733-9445
- eISSN
- 1943-541X
- Language
- English
- Date published
- 11/01/2016
- Academic Unit
- Civil and Environmental Engineering
- Record Identifier
- 9984197430302771
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