Dynamic Simulation Analysis of Temperature Field and Thermal Stress of Concrete Gravity Dam during Construction Period

Abstract:

The basic theory of temperature field and stress field of concrete and 3D FEM combining with cooling pipe discrete model and iteration method are used to carry out the dynamic simulation analysis of the temperature filed and stress field of a concrete gravity dam of South-to-North Water Diversion Project. The impacts on cracking mechanism of the surface insulation, internal cooling and environmental climate are considered in calculation. The change laws of temperature field and thermal stress with time and their distributions are analyzed, reasonable temperature control measures are put forward for reference. The results show that good effect of temperature control and cracking prevention is achieved, the proposed measures should have great reference significance to the similar concrete dam in future.

• Periodical: Applied Mechanics and Materials (Volumes 90-93)
• Pages: 2677-2681
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.90-93.2677
• Online since: September 2011
• Authors: Hai Bo Wang, Sheng Qiang, Xiao Sun, Rui Zheng
• Keywords: Concrete Gravity Dam, Cooling Pipe Discrete Model, Numerical Modeling, Temperature Control Measures for Cracking Prevention, Thermal Stress

References

[1] Y.M. Zhu, Z.Q. Xu: Journal of Yangtze River Scientific Research Institute. Vol.20 (2003), p.19. (In Chinese)

[2] De Schutter G: Computers and structures. Vol.80 (2002), p.2035.

[3] BAZANT Z P, WITTMANN F H, in: Creep and shrinkage in concrete structures. Wiley-interscience Publication, 1982.

[4] BAZANT Z P: Materials and Structures, RILEM, Paris, (1970), P.19:3.

[5] P. Xu, Y.M. Zhu: Journal of Hydraulic Engineering, Vol.40 (2009), p.969. (In Chinese)

[6] H.B. Wang, S. Qiang: Advanced Materials Research.Vols.163-167 (2011), p.259.