Damping Formulae for reinforced and partially prestressed beams

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Title Damping Formulae for reinforced and partially prestressed beams
Author Chowdhury, Sanaul Huq; Loo, Yew-Chaye; Fragomeni, Salvatore
Journal Name Advances in Structural Engineering
Editor Ko,J.M.
Year Published 2000
Place of publication UK
Publisher Multi-Science Publishing Co.
Abstract A full-size test program was carried out on 26 simply-supported and continuous reinforced and partially prestressed concrete beams to study the cracking behaviour and damping characteristics of concrete beams. The beams were subjected to free vibration tests and logarithmic decrement values corresponding to each load level were measured. Separate regression analyses on the reinforced and the partially prestressed beams were undertaken. These analyses resulted in two separate empirical formulae for predicting the logarithmic decrement of damping in reinforced and in partially prestressed beams. Comparison with test results from all 26 beams indicates that the predictions are accurate. It is also found that the damping formula for reinforced beams is applicable to both single and continuous spans. The proposed damping formulae predict damping from the residual crack widths of the beams. As such, formulae developed for predicting residual crack widths from given variables defining the beams and their deflection-span ratios are also reported.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1260/1369433001502256
Copyright Statement Copyright 2000 Multi-Science Publishing Co. Ltd. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 4
ISSN 1369-4332
Date Accessioned 2001-01-01
Date Available 2015-01-18T22:01:00Z
Language en_US
Subject PRE2009-Structural Engineering
URI http://hdl.handle.net/10072/3356
Publication Type Article in Scholarly Refereed Journal
Publication Type Code c1

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