Effective Steel Braced Frames for Tall Building Applications in High Seismic Regions. Hariri, B. & Tremblay, R. In volume 262 LNCE, pages 361 - 369, Timisoara, Romania, 2022. ![Effective Steel Braced Frames for Tall Building Applications in High Seismic Regions [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex Steel braced frames are commonly used for building structures in seismic active regions. However, steel braced frame systems are limited to low- and medium rise structures because they are prone to concentration of inelastic demand resulting from adverse P-Δ effects and lack of vertical stiffness continuity. The article introduces a modified inverted-V buckling braced frame configuration in which one of two bracing members at every level is replaced with a conventional brace designed to remain elastic and form with the beam member an elastic secondary system providing the system with positive post-yielding storey shear stiffness annihilating P-Δ effects upon yielding of the BRB members and ensuring stable seismic response for tall building applications. The anticipated behaviour and design approach of the proposed E-BRBF system is first described. The stability of the system is then verified through nonlinear response history analysis for 20-, 30- and 40-storey buildings subjected to ground motions from shallow crustal, subduction in-slab, and subduction interface earthquakes. The analysis results are compared to those obtained with conventional BRBFs. The comparison shows that the proposed E-BRBF system can significantly enhance the seismic response of tall buildings, with reduced and more evenly distributed peak storey drift demand over the structure height.
© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
@inproceedings{20222112138580 ,
language = {English},
copyright = {Compilation and indexing terms, Copyright 2025 Elsevier Inc.},
copyright = {Compendex},
title = {Effective Steel Braced Frames for Tall Building Applications in High Seismic Regions},
journal = {Lecture Notes in Civil Engineering},
author = {Hariri, Bashar and Tremblay, Robert},
volume = {262 LNCE},
year = {2022},
pages = {361 - 369},
issn = {23662557},
address = {Timisoara, Romania},
abstract = {<div data-language="eng" data-ev-field="abstract">Steel braced frames are commonly used for building structures in seismic active regions. However, steel braced frame systems are limited to low- and medium rise structures because they are prone to concentration of inelastic demand resulting from adverse P-Δ effects and lack of vertical stiffness continuity. The article introduces a modified inverted-V buckling braced frame configuration in which one of two bracing members at every level is replaced with a conventional brace designed to remain elastic and form with the beam member an elastic secondary system providing the system with positive post-yielding storey shear stiffness annihilating P-Δ effects upon yielding of the BRB members and ensuring stable seismic response for tall building applications. The anticipated behaviour and design approach of the proposed E-BRBF system is first described. The stability of the system is then verified through nonlinear response history analysis for 20-, 30- and 40-storey buildings subjected to ground motions from shallow crustal, subduction in-slab, and subduction interface earthquakes. The analysis results are compared to those obtained with conventional BRBFs. The comparison shows that the proposed E-BRBF system can significantly enhance the seismic response of tall buildings, with reduced and more evenly distributed peak storey drift demand over the structure height.<br/></div> © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.},
key = {Stiffness},
%keywords = {System stability;Seismic response;Structural frames;Shear flow;Buckling;Tall buildings;Earthquakes;},
%note = {Active regions;Buckling restrained braces;Building applications;Building structure;P-delta effects;Post-yielding;Post-yielding stiffness;Seismic regions;Soft-storey response;Steel braced frames;},
URL = {http://dx.doi.org/10.1007/978-3-031-03811-2_36},
}
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