Experiment Study on Dynamic Characteristics of Unbounded Prestressed Concrete Beams

Abstract:

An experimental investigation on the dynamic characteristics of unbounded prestressed concrete simply support beams is presented in this study. A total of 3 unbounded prestressed concrete simply support beams were constructed and tested. The main variables considered in the test study were the prestress level, the position of prestressed steel and concrete damage. The test results shows that the natural frequencies and model shape of prestressed concrete beams change with the prestress level and the position of prestressed steel, and that the existence or not of concrete crack have certain effects on the dynamic characteristics of prestressed concrete beams.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 273-276
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.273
• Online since: May 2012
• Authors: Feng Ge Li, Rong Li
• Keywords: Concrete Beam, Dynamic Characteristic, Frequency, Unbonded Prestressing, Vibration Mode

References

[1] Saiidi M, Douglas B and Feng S: Journal of Structural Engineering, Vol.120 (1994), pp.233-241.

[2] Nabil F. Grace and Brian Ross: Journal of Structural Engineering, Vol.122 (1996), p.643—650.

[3] Zhang Yaoting, Cai Lijian and Zhang Changpao: Journal of Industrial Construction, Vol.35 (2005), pp.84-87. (in Chinese)

[4] Xia Zhang-hua and Zong Zhou-hong: Journal of Vibration and Shock, Vol. 26 (2007), pp.129-134. (in Chinese)