Analsis and research of externally prestressed concrete Continuous beam vibration behavior

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (6) : 104-108.

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Analsis and research of externally prestressed concrete Continuous beam vibration behavior

XIONG Xue-yu1，2; GAO Feng1; LI Yang1

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Abstract

The formula of natural frequency about double broken line externally prestressed concrete beam is derived by Ayaho Miyamoto and improved and extended by Xue-Yu Xiong, etc., but the formula only applies to simple beam. taken the two-cross single (double) broken line externally prestressed concrete beam for example in this paper, the transverse vibration of externally prestressed concrete beam is researched by the method of overall analysis and Laplace transform. And the frequency equation and analytical expression of mode shape function are induced. The inducing process can be used in the natural frequency calculations of continuous beam. The error of measured results between calculation results is -2.8%. Its results agree well, which is helpful to guide the actual project

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Continuous beam / Transverse vibration / Natural frequency / external prestressed beams

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XIONG Xue-yu;GAO Feng;LI Yang. Analsis and research of externally prestressed concrete Continuous beam vibration behavior[J]. Journal of Vibration and Shock, 2011, 30(6): 104-108