Dynamic Response Of Tower Structures

Authors

  • Liga Gaile Riga Technical University (LV)
  • Ivars Radinsh Riga Technical University (LV)

DOI:

https://doi.org/10.17770/etr2011vol2.970

Keywords:

dynamic parameters, frequency, mode shapes, steel tower, vibrations

Abstract

The present study focuses on the tower type structures response to the dynamic loads. The study analyzes the possible mode shapes regarding to tower structure. The estimation of mode shapes and their dependence from structural changes was made for an existing tower structure. To get an acceptable tower’s vibration level and avoid possibility of resonance effect from usual serviceability loads it was evaluated options to change natural frequencies of the structure. It is performed existing 36m high sightseeing tower dynamic analysis and proposed potential solutions to increase critical natural frequencies of the structure. In this study to obtain dynamic parameters of the sightseeing tower structure have been used finite element models and calculation techniques.

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References

Franck L. Synchronous Lateral Excitation of Footbridges, Swiss Federal Institute of Technology, Swiss, 2009, p.5.

Bachman H., Ammann W. Vibration in Structures Induced by Man and Machines. Structural Engineering Document 3e, International Association for Bridge ans Structural Engineering (IABSE), ch. 2: Man Induced Vibrations, Appendix A: Case Reports, 1987.

Fujino Y., Pacheco B., Nakamura S., Warnitchai P. Sychronization of human walking observed during lateral vibration of human walking observed during lateral vibration of a congested pedestrian bridge. Earthquake Engineering and Structural Dynamic (22), p. 741-758.

MacLeod I. A., Modern Structural analysis. Modeling Process and Guidance, 2005, p. 138-139. (in English).

Reaserch Fund for Coal and Steel. Human induced Vibrations of Steel Structures. Design of Footbridges. Background Document.RFS2-CT-2007-00033, 2007, p. 5-6.

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Published

2015-08-05

How to Cite

[1]
L. Gaile and I. Radinsh, “Dynamic Response Of Tower Structures”, ETR, vol. 2, pp. 85–91, Aug. 2015, doi: 10.17770/etr2011vol2.970.