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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)


Article Title: Self-Excited Response of Multi-Bay R. C. Frames with Stiffened Joints
by Onodagu P. D., Ezenwamma A. A. and Nwajuaku A. I.

This paper proposed and evaluated self-excited responses of multi-bay reinforced concrete frames with stiffened joints. In the course of this work, much emphasis was placed on how the lengths of stiffened joints could influence the dynamic response of the frames under self-excitation. Consequent upon, the stiffened length ratio, (i.e. the ratio of stiffened length to unstiffened length) of the structural members are varied and at each condition the associated frequency spectrum of the simulated frame was evaluated; and a comparative analysis was made on the fundamental period of the stiffened joints model with that of its equivalent shear building model. It was found that at about eleven percent (11%) stiffened length ratio, a 3-floor dual-bay r. c. frame with stiffened joints model exhibited dynamic response equal to that of its equivalent shear building model. Similarly, similar responses were attained at thirteen percent (13%) and sixteen percent (16%) stiffened length ratios respectively for a 5-floor dual-bay frame and a 9-floor dual-bay frame with stiffened joints models when compared with that of their equivalent shear building models.
Keywords: multi-bay frames with stiffened joints; self-excitation; natural frequencies; fundamental period of vibration
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ISSN: 2141-7016

Editor in Chief.

Prof. Gui Yun Tian
Professor of Sensor Technologies
School of Electrical, Electronic and Computer Engineering
University of Newcastle
United Kingdom



Copyright © Journal of Emerging Trends in Engineering and Applied Sciences 2010