In‐Plane Vibrations of X‐Braced Frames
Publication: Journal of Engineering Mechanics
Volume 115, Issue 11
Abstract
In resisting lateral forces, X‐bracings are considered very effective for high‐rise frames. As an extension of earlier work of vibration of X‐braced portal frames, in‐plane vibrations of N‐story X‐braced frames are investigated. The elements of such a frame are made of elastic continuum undergoing transverse as well as axial vibrations. Comparing this approach with other numerical methods such as the finite element method, for dynamic analysis of elastic frames, the present method is simpler in formulations and better in results since the solutions obtained are exact in the framework of small‐vibration theory. The characteristics of X‐braced frames are investigated by six sets of numerical examples including free and forced vibrations, and dynamic responses of ground motion. The effectiveness of X‐bracings is also examined by comparing an X‐braced frame with an unbraced rectangular frame.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 115 • Issue 11 • November 1989
Pages: 2368 - 2385
Copyright
Copyright © 1989 ASCE.
History
Published online: Nov 1, 1989
Published in print: Nov 1989
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