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Proceedings Paper

Separating temperature effect from state monitoring of concrete bridges
Author(s): Zongbao Liang; Jie Zhang; Jianqiu Cao; Jianting Zhou
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Paper Abstract

The structure of concrete bridge is usually large in dimension and the structural state information is heavily impacted by many complicated factors. Especially, the influence of temperature to the structural responses is very significant and this influence varies distinctly with the sun shine, sharp descent of temperature and season changing. Consequently, the existence of temperature effect will result in a greatly complicated variation of the structural responses, adding great difficulty in the effective extraction of structural health information for safety assessment of bridges. In this paper, In order to realize the effective assessment of the structural safety of concrete bridges, according to the correlating characteristic between temperature and structural response (such as strain or deflection) of the bridge, the experiential regressive equation is decided by regressive analysis of temperature and structural response, and further more the temperature effect is separated from the total response. Finally, an application example is given out for demonstration. The results indicate that the response residual after elimination of temperature effect remains only the effect of structural variety under loads (including dead load and live load), which can be used as the foundation information for structural safety assessment of concrete bridges.

Paper Details

Date Published: 9 April 2009
PDF: 9 pages
Proc. SPIE 7295, Health Monitoring of Structural and Biological Systems 2009, 72952N (9 April 2009); doi: 10.1117/12.817848
Show Author Affiliations
Zongbao Liang, Chongqing Jiaotong Univ. (China)
Jie Zhang, Chongqing Univ. (China)
Jianqiu Cao, Chongqing Jiaotong Univ. (China)
Jianting Zhou, Chongqing Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 7295:
Health Monitoring of Structural and Biological Systems 2009
Tribikram Kundu, Editor(s)

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