Paper Title:

Experiment Study on Dynamic Characteristics of Unbounded Prestressed Concrete Beams

Periodical Applied Mechanics and Materials (Volumes 166 - 169)
Main Theme Progress in Structures
Edited by Xingang Zhou, Mingjin Chu, Jinming Liu, Shuying Qu and Haitao Fan
Pages 273-276
DOI 10.4028/www.scientific.net/AMM.166-169.273
Citation Feng Ge Li et al., 2012, Applied Mechanics and Materials, 166-169, 273
Online since May, 2012
Authors Feng Ge Li, Rong Li
Keywords Concrete Beam, Dynamic Characteristics, Frequency, Unbonded Prestressing, Vibration Mode
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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.