International Journal of Civil and Structural Engineering

Volume 4 Issue 1 2013          Pages: 12 - 19           << Previous      Next>>

Structural Behavior of Steel Building with Concentric and Eccentric Bracing: A Comparative Study

Author Information:

Zasiah Tafheem1, Shovona Khusru2
1&2 – Assistant Professor, Department of Civil Engineering, Ahsanullah University of Science and Technology, Dhaka 1208, Bangladesh

Many existing steel buildings need to be retrofitted to overcome the deficiencies to resist the lateral loading. In the present study, a six storied steel building has been modeled and then analyzed due to lateral earthquake and wind loading, dead and live load. The performance of the same steel building has been investigated for different types of bracing system such as concentric (crossed X) bracing and eccentric (V-type) bracing using HSS sections. The performance of the building has been evaluated in terms of lateral storey displacement, storey drift as well as axial force and bending moment in columns at different storey level. The effectiveness of various types of steel bracing on the structure has also been investigated. More importantly, the reduction in lateral displacement has been found out for different types of bracing system in comparison to building with no bracing. From the present study, it has been found that the concentric (X) bracing reduces more lateral displacement and thus significantly contributes to greater structural stiffness to the structure.

Keywords: Bracing system, concentric and eccentric bracing, lateral storey displacement, storey drift.

doi: 10.6088/ijcser.201304010002

Copyright: © 2013 by the author(s), licensee Integrated Publishing Association. This is an open-access article distributed under the terms of the Creative Commons Attribution License (3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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