Proceedings of the Computational Structural Engineering Institute Conference (한국전산구조공학회:학술대회논문집)
- 2005.04a
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- Pages.408-415
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- 2005
Effects of Prestressing Force on the Natural Frequency of a PSC Beam
PSC 보의 고유진동수에 미치는 긴장력의 영향
- Published : 2005.04.01
Abstract
Existing results of some related experiments report that variation in the magnitude of prestressing force may leads to a change of dynamic properties of a PSC girder system. Since a usual dynamic equilibrium equation doesn't explain these phenomena, a modified dynamic equilibrium equation is derived in this paper by considering prestressing force as an internal energy of the system. The derived equation is applied to a modified beam element model is proposed. The proposed model validated by comparing the natural frequencies computed by the model with those from an existing experiment result.
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