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Shock and Vibration
Volume 1 (1993), Issue 1, Pages 59-64

Excitation of Arch and Suspension Bridges by Subwires

Noriaki Hiwatashi,1 Yoji Mizuta,2 Yutaka Ishihara,3 and Itio Hirai3

1Sumitomo Construction Co. Ltd., 1-3-1 Minato Chuoku, Fukuoka 810, Japan
2Yatsushiro National College of Technology, 2627 Hirayama Shinmachi, Yatsushiro, Kumamoto-ken 866, Japan
3Department of Civil and Environmental Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto-shi 860, Japan

Copyright © 1993 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A force generation method using a subwire for arch and suspension bridges is proposed. The subwire is connected to the arch or the cable of the bridge through rollers. The uniform force produced by pulling and releasing the pretensioned subwires acts on the bridge as an externalforce. A new device called “the resonance force generator” is also developed to excite the bridges by applying a small force. To verify the proposed concept, a stress ribbon bridge was excited with the resonance force generator.