Analysis on the Daily Temperature Variation of a Concrete Slab under Environmental Effects

Abstract:

The dynamic temperature field of a concrete slab is actively studied in this study with the aiding of the commercial package ANSYS. Fine finite element model of the concrete slab is constructed and different boundary conditions are applied to obtain the temperature distribution within the slab with the aid of the commercial software package ANSYS. The solar radiation model is utilized to estimate the solar radiation received by the slab and the shelter effects are also taken into consideration. The numerical models can successfully predict the structural temperature at different time. The made observations demonstrate that the simulated temperature variation of the concrete slab based on the solar radiation model agrees well with measurement results. It is seen that the numerical models can successfully predict the structural temperature field at different time. The methodology employed in the paper can be applied to other concrete structures as well.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 2530-2534
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.2530
• Online since: March 2013
• Authors: Jian Ping Wang*, Bo Chen, Jin Zheng, Peng Yun Li
• Keywords: Concrete Slab, Field Test, Heat Transfer Analysis, Temperature Distribution

References

[1] Kehlbeck F. Einfluss der Sonnenstrahlung bei Bruckenbauwerken. Werner-Verlag, Dusseldorf, Germany, (1975).

[2] Saetta, A. Scotta, R., Vitaliani, R. Stress analysis of concrete structures subjected to variable thermal loads[J], Journal of Structural Engineering ASCE, 1995, 121 (3): 446-457.

DOI: 10.1061/(asce)0733-9445(1995)121:3(446)

[3] Branco, F.A. Mendes, P.A. Thermal actions for concrete bridge design [J], Journal of Structural Engineering ASCE, 1993, 119 (8): 2313-2331.

DOI: 10.1061/(asce)0733-9445(1993)119:8(2313)

[4] Carin, L. John, E. Cawrse, J. Measurements of thermal gradients and their effects on segmental concrete bridge[J], Journal of Bridge Engineering ASCE, 2002, 7 (3): 166-174.

DOI: 10.1061/(asce)1084-0702(2002)7:3(166)

[5] W.M. Rohsenow. Handbook of heat transfer applications. New York: McGraw-Hill, (1988).

[6] Elbadry, M. Ghalli, A. Temperature variation in concrete bridges[J], Journal of Structural Engineering ASCE, 1983, 109 (10): 2355-2374.

[7] Elbadry, M. Ghali, A. Control of thermal cracking of concrete structures[J], ACI Journal, 1995, (7): 435-450.

[8] Dilger, W. H. Ghali, A. Chan, M. Temperature stresses in composite box girder bridges[J], Journal of Bridge Engineering ASCE, 1983, 109 (6): 1460-1478.

DOI: 10.1061/(asce)0733-9445(1983)109:6(1460)

[9] M. Froli, N. Hariga, G. Nati. Longitudinal thermal behavior of a concrete box girder bridge. Structural Engineering International, 1996, 6 (4): 237-242.

DOI: 10.2749/101686696780496139