Measurement and Analysis of Temperature Effects on Box Girders of Continuous Rigid Frame Bridges

Researches on the general rules of temperature field changing and their effects on the bridge in construction are necessary. This paper investigated the rules of temperature field changing and its effects on bridge using onsite measurement and computational analysis. Guanyinsha Bridge was used as a case study in this research. The temperature field was simulated in analyses. The effects of certain boundary conditions such as sun radiance, wind speed, and model parameters such as heat factor and specific heat on temperature field are investigated. Recommended values for these parameters are proposed. The simulated temperature field matches the measured observations with high accuracy. At the same time, the stresses and deflections of the bridge computed with the simulated temperature field matches measured values too. As a conclusion, the temperature effect analysis of reinforced concrete box girder can be conducted directly based on the reliable weather data of the concerned area.

Authors:

• Bugao Wang
• Weifeng Wang
• Xianwei Zeng

Keywords:

• continuous rigid frame bridge
• temperature effectanalysis
• temperature field
• temperature field simulation

References:

[1] C. Chen, "Analysis of Temperature Influence on Long-span Prestress
Concret Cable-stayed Bridge Construction Control," Journal of Highway
And Transportation Research And Development, vol. 19, no. 6, Dec.
2002.
[2] W. H. Dilger, A. Ghali, M. Chan, M. S. Cheung, and M. A. Maes,
"Temperatures stresses in composite box girder bridges," Journal of
Structural Engineering, ASCE, vol. 109, no. 6, pp.1460-1478, Jun. 1983.
[3] K. Hu, "Measurement and Analysis of Temperature Fields and Effects on
Flexible Pier," Journal of Shanghai Tiedao University, 1982(3).
[4] Y. Ge, D. Zhai, and G. Zhang, "Temperature Gradient Test and Research
of RC Cable-Stayed Bridges," Chinese Journal of Highway And
Transportation, vol. 9, no. 2, Jun. 1996.
[5] J. C. Reynolds, and J. H. Emanuel, "Thermal stresses and movements in
bridges," Journal of the Structural Division, ASCE, vol. 100, no. 1, pp.
63-78, Jan. 1974.
[6] S. Moorty, and C. W. Roeder, "Temperature dependent bridge
movement," Journal of Structural Division, ASCE, vol. 118, no. 4, pp.
1090-1105, 1992.
[7] F. Kehlbeck, Effect of Solar Radiation on Bridge Structure. (LIU
Xing-Fa, et al transl.), Beijing : Chinese Railway Publishing Company,
1981.
[8] M. M. Eibadry, and A. Ghali, "Temperature variations in concrete
bridges," Journal of Structural Engineering, ASCE, vol. 109, no. 10, pp.
2355-2374, Oct. 1983.