Simple Analytical Model for Vibration Frequency Calculation of Anchor Span Strand in Suspension Bridges
Publication: Journal of Engineering Mechanics
Volume 143, Issue 10
Abstract
A simple analytical model for calculating the vibration frequencies of anchor span strands in suspension bridges is proposed in this study. The vibration frequencies of strands are important indicators of tension force and critical in construction control. Most existing methodologies either ignore the connecting rods in anchor spans or require a complex finite-element analysis to ensure accurate calculations. A simple model is proposed for rapid and efficient analysis that includes the geometric and material properties of connecting rods. The calculation results of the proposed model are compared with and verified against those of existing solutions in literature and finite-element simulations. Afterward, the proposed method is applied to the Nanxi Yangtze suspension bridge. The effects of the length and material parameters of connecting rods on the calculation of strand tensions are parametrically discussed. Conclusions and recommendations for future strand tension analysis and control are also presented.
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Acknowledgments
The research described in this paper was financially supported by the National Basic Research Program of China (973 Program 2015CB057701), the Natural Science Foundation of China (51308071), the Natural Science Foundation of Hunan Province (13JJ4057), the Foundation of China Scholarship Council (201408430155), and the Traffic Department of Applied Basic Research Project (2015319825120).
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Published In
Journal of Engineering Mechanics
Volume 143 • Issue 10 • October 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Dec 2, 2015
Accepted: Mar 28, 2017
Published online: Jul 20, 2017
Published in print: Oct 1, 2017
Discussion open until: Dec 20, 2017
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