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논문 기본 정보

자료유형
학술대회자료
저자정보
Jeong Jae Lee (경희대학교)
저널정보
대한토목학회 대한토목학회 합동 학술발표회 2008 대한토목학회 구조분야 합동 학술발표회
발행연도
2008.7
수록면
61 - 73 (13page)

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This paper deals with comparison of the experimental and theoretical study on temperature distribution for the slab bridges and the proposal of design temperature load model. For experimental study, long-term measurement of temperature distribution along the height of slab has been performed on a concrete slab bridge. 20 temperature sensors are installed during the construction of the bridge. Hourly temperature data are collected for more than three years. Extreme values of temperature load parameters such as average sectional temperature and linear vertical temperature difference are estimated under the assumption of extreme type distribution. The vertical temperature distribution profiles are also analyzed. The results are compared with temperature load models from various design codes, such as AASHTO and Eurocode. For theoretical study, finite element thermal analysis has been used. Values of ambient temperatures and solar radiation intensity are collected through meteorological stations near the bridge for experimental study and are used for input data. Appropriate values of concrete thermal properties are selected. Analyses are performed on various locations in the country. Based on the experimental and theoretical studies and current design codes, new design temperature load models for concrete slab bridges are proposed for the new LRFD Korea Bridge Design Code.

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Abstract
1. Introduction
2. Temperature measurement
3. Thermal loading parameters
4. Extreme analysis of parameters
5. Comparison with codes and other results
6. Analytical model
7. Thermal analysis
8. Development of temperature load model
9. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2012-531-003946284