Research on Autogenous Volume Deformation’s Influence on Thermal Creep Stress of Concrete High Arch Dam

Abstract:

Autogenous volume deformation is an important parameter of anti-cracking behaviors of concrete. The sensitivity analysis of influence of concrete autogenous volume deformation on thermal stress of Xiaowan high arch dam is carried out based on simulation of temperature field. When presuming autogenous volume deformation, expansion concrete and shrinkage concrete are considered. The results show that early expansion and early shrinkage concretes have obvious influence on arch dam’s early thermal st ress; however have less influence on dam center’s maximum thermal stress. The longer of expansion period, the smaller of dam center’s maximum thermal stress; and the final residual thermal stress, which can benefit the concrete’s anti-cracking quality.

• Periodical: Advanced Materials Research (Volumes 282-283)
• Pages: 367-370
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.282-283.367
• Online since: July 2011
• Authors: Ling Fei Xie, Li Yang
• Keywords: Concrete Autogenous Volume Deformation, Concrete High Arch Dam, Thermal Creep Stress, Transient Temperature Field

References

[1] Zhu Bofang: On construction of dams by concrete with gentle volume expansion. Journal of Hydroelectric Engineering, pp.1-13. (2000).

[2] Li Chengmu and Yang Yuanhui: Study on longer term autogenous volume deformation of MgO concrete. Journal of Hydraulic Engineering, Vol. (3), pp.54-58 (1999).

[3] Zhu Bofang: Thermal Creep Stress and Temperature Control of Mass Concrete. Peking: Public of Electricity Power of China (1998).