Seismic performance of conventional construction braced steel frames designed according to canadian seismic provisions

Seismic performance of conventional construction braced steel frames designed according to canadian seismic provisions. Tremblay, R., Castonguay, P. X., Guilini-Charette, K., & Koboevic, S. In pages 794 - 803, Austin, TX, United states, 2009. Braced steel frames;Building code provisions;Connection capacity;Conventional constructions;Deformation demands;Larger deformations;Nonlinear time history analysis;Seismic Performance;

Paper abstract bibtex

This paper presents an ongoing research project on the seismic performance of concentrically braced steel frames of the Conventional Construction category designed according to Canadian seismic provisions. A preliminary test program performed on typical brace connections indicated that a governing bolt bearing failure mode can lead to ductile connection response. Nonlinear time history analyses were carried out for 4- and 8-storey structures to assess the force and deformation demand from earthquakes on brace connections. The building height, the location in Canada, and the site class were varied. The median brace axial forces obtained from the analyses were found to exceed the code design force level specified for non ductile brace connections, except for the buildings located on site Class C in Montreal. These structures however possessed increased overstrength due to building code provisions. The excessive force demand observed in the other structures is mainly attributed to the difference in damping levels assumed in analysis and design. For the 4-storey structures, the computed median inelastic connection deformation values are small enough to be accommodated by properly detailed connections exhibiting a bolt bearing failure mode. The 8-storey structures experienced larger deformations, in excess of thetested connection capacity, as well as marked demand concentrations over the building height. © 2009 ASCE.

@inproceedings{20093812312893 ,
language = {English},
copyright = {Compilation and indexing terms, Copyright 2023 Elsevier Inc.},
copyright = {Compendex},
title = {Seismic performance of conventional construction braced steel frames designed according to canadian seismic provisions},
journal = {Proceedings of the 2009 Structures Congress - Don't Mess with Structural Engineers: Expanding Our Role},
author = {Tremblay, Robert and Castonguay, Pierre X. and Guilini-Charette, Kim and Koboevic, Sanda},
year = {2009},
pages = {794 - 803},
address = {Austin, TX, United states},
abstract = {This paper presents an ongoing research project on the seismic performance of concentrically braced steel frames of the Conventional Construction category designed according to Canadian seismic provisions. A preliminary test program performed on typical brace connections indicated that a governing bolt bearing failure mode can lead to ductile connection response. Nonlinear time history analyses were carried out for 4- and 8-storey structures to assess the force and deformation demand from earthquakes on brace connections. The building height, the location in Canada, and the site class were varied. The median brace axial forces obtained from the analyses were found to exceed the code design force level specified for non ductile brace connections, except for the buildings located on site Class C in Montreal. These structures however possessed increased overstrength due to building code provisions. The excessive force demand observed in the other structures is mainly attributed to the difference in damping levels assumed in analysis and design. For the 4-storey structures, the computed median inelastic connection deformation values are small enough to be accommodated by properly detailed connections exhibiting a bolt bearing failure mode. The 8-storey structures experienced larger deformations, in excess of thetested connection capacity, as well as marked demand concentrations over the building height. &copy; 2009 ASCE.<br/>},
key = {Deformation},
keywords = {Seismic design;Seismology;C (programming language);Seismic waves;Structural frames;Steel construction;Software testing;},
note = {Braced steel frames;Building code provisions;Connection capacity;Conventional constructions;Deformation demands;Larger deformations;Nonlinear time history analysis;Seismic Performance;},
URL = {http://dx.doi.org/10.1061/41031(341)87},
}

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