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Comparative Analysis of Various Kinds Concrete Creep Prediction Models

[+] Author Affiliations
Jun-Qing Lei

Beijing Jiaotong University, Beijing, China

Hang Xu

CCCCt Highway Consultants Co. Ltd., Beijing, China

Li-Qun Zou

Beijing Jiaotong University; China First Highway Engineering Co. Ltd., Beijing, China

Paper No. JRC2011-56010, pp. 19-22; 4 pages
doi:10.1115/JRC2011-56010
From:
  • 2011 Joint Rail Conference
  • 2011 Joint Rail Conference
  • Pueblo, Colorado, USA, March 16–18, 2011
  • ISBN: 978-0-7918-5459-4 | eISBN: 978-0-7918-3893-8
  • Copyright © 2011 by ASME

abstract

The ratio of bridges to High-speed Railway line in China is very high. The influence of concrete creep to bridge structure is very high, so it is necessary to study creep of concrete in depth. In this thesis, experimental data of four important regions in China are collected, and the curves of concrete creep are analyzed. While, by comparing the domestic and foreign curves of Concrete Creep Prediction Models, the difference between them could be found. In addition, the theory of long-term deformation of concrete obtained by short-time experiment, which is proposed by Professor Bazant is used. According to experimental data, the creep curves are fittd by regression method. Finally, the comparison between common prediction models and Bazants’ theory is carried out, it can be found that the regression value is closed to the measured value.

Copyright © 2011 by ASME
Topics: Creep , Concretes

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