Seismic Design of Structures by Bundled Columns
Publication: Journal of Engineering Mechanics
Volume 129, Issue 12
Abstract
A practical technique to protect structures against the effects of earthquakes is examined and proposed for use in design. The technique involves the bundling of slender steel members to form columns that are stiff and strong vertically, yet stable and quite flexible horizontally, leading to significant deamplifications of the main effects of the earthquake excitation. Because of its lateral deformation capacity, the proposed system can be designed to remain elastic even under severe ground motions. A number of analyses are made to identify the main properties of the proposed column system, and the use of the bundled column concept as a base isolation system is also explored. Example problems representative of realistic earthquake-excited structures are reported, elucidating the main features of the proposed technique and the implications of its implementation. The presentation focuses on the fundamentals, avoiding unnecessary modeling complications, to highlight the main factors involved.
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Information
Published In
Journal of Engineering Mechanics
Volume 129 • Issue 12 • December 2003
Pages: 1466 - 1474
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Dec 14, 1999
Accepted: Nov 19, 2002
Published online: Nov 14, 2003
Published in print: Dec 2003
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