Simulation of Construction of RCC Dams. II: Stress and Damage
Publication: Journal of Structural Engineering
Volume 126, Issue 9
Abstract
The increasing number of roller compacted concrete (RCC) dams being built around the world demands accurate methodologies for the realistic short- and long-term evaluations of the risk of thermally induced cracking in these constructions. In this work a numerical procedure for the simulation of the construction process of RCC dams is presented. It takes into account the more relevant features of the behavior of concrete at early ages, such as hydration, aging, creep, and damage. A 2D model of the Urugua-;aaı RCC Dam, built in Argentina, is used to perform the corresponding analyses. In this second part of the paper, the mechanical aspects of the simulation are presented; long-term effects are included by incorporating a creep model that naturally accounts for the aging effects, and the risk of tensile damage is also considered. The methodology determines the stress field inside the dam at any time during the construction and in the following years. Results for the reference case assess the suitability of the adopted design. This is compared to alternative studies considering different construction schedules to conclude that for these cases changes should be introduced in the dam design.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Bazant, Z. P. (1979). “Thermodynamics of solidifying or melting viscoelastic material.”J. Engrg. Mech. Div., ASCE, 105(6), 933–952.
2.
Bazant, Z. P., Hauggard, A. B., Baweja, S., and Ulm, F. J. (1997). “Microprestress-solidification theory for concrete creep. I: Aging and drying effects.”J. Engrg. Mech., ASCE, 123(11), 1188–1194.
3.
Bazant, Z. P., and Prasannan, S. (1989). “Solidification theory for concrete creep. I: Formulation.”J. Engrg. Mech., ASCE, 115(8), 1691–1703.
4.
Carol, I., and Bazant, Z. P. (1993). “Viscoelasticity with aging caused by solidification of nonaging constituent.”J. Engrg. Mech., ASCE, 119(11), 2252–2269.
5.
Cervera, M., Oliver, J., and Prato, T. (1999). “Thermo-chemo-mechanical model for concrete. II: Damage and creep.”J. Engrg. Mech., ASCE, 125(9), 1028–1039.
6.
Cervera, M., Oliver, J., and Prato, T. (2000). “Simulation of construction of RCC dams. I: Temperature and aging.”J. Struct. Engrg., ASCE, 126(9), 1053–1061.
7.
Fujisawa, T., and Nagayama, I. (1985). “Cause and control of cracks by thermal stress in concrete dams.” Proc., 15th Congr. on Large Dams, ICOLD, ed., Vol. 2, 117–143.
8.
Hirose, T., Nagayama, I., Takemura, K., and Sato, H. (1988). “A study on control temperature cracks in large roller compacted concrete dams.” Proc., 16th Congr. on Large Dams, ICOLD, ed., Vol. 3, 119–135.
9.
Widmann, R. (1985). “How to avoid thermal cracking of mass concrete.” Proc., 15th Congr. on Large Dams, ICOLD, ed., Vol. 2, 263–277.
Information & Authors
Information
Published In
History
Received: Mar 17, 1999
Published online: Sep 1, 2000
Published in print: Sep 2000
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.