Research on the Concrete Dam Damage and Failure Rule under the Action of Fluid-Solid Coupling

Abstract:

This paper evaluates the stability of concrete dam under the action of fluid-solid coupling in the two working conditions of water level raising and rainfall intensity increasing with the method of strength reduction, and the conclusions are revealed as follows: The unstable failure of dam always starts from the slope base, the crack on the slope top and the creep slip in the slop base developed, which led to the gradual destruction of the dam and formed the slip surfaces through the dam; the safety factor of the concrete dam reduced and the potential slip surfaces moved to the inside of the dam with the water level raising; the more rainfall intensity, the larger plastic yield region and the lower safety factor will be, and the dam slip surfaces transferred from the base of slope to the inside of the slope top gradually.

• Periodical: Applied Mechanics and Materials (Volumes 226-228)
• Pages: 1371-1376
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.226-228.1371
• Online since: November 2012
• Authors: Ke Ming Sun, Zan Li, Moj Raj Bagale
• Keywords: Concrete Dam, Creep Slip, Damage Failure, Fluid Solid Coupling, Rainfall Intensity, Safety Factor

References

[1] D.G. Fredlund, A. Xing, M.D. Frudlund, et al. The relationship of the unsaturated soil shear strennth function to the soil-water characteristic curve[J]. Canadian Geotechnical Journal. (1995)

DOI: 10.1139/t96-065

[2] D.G. Fredlund, A. Xing, S. Huang. Predicting the permeability function for unsaturated soils using the soil-water characteristic curve. Canadian Geotechnical Journal[J]. (1994)

DOI: 10.1139/t94-062

[3] Z.Y. Chen. Analysis Methodprinciple on soil slope stability[J]. (2000)

[4] H.C. Tan and A.K. Chopra. Dam-foundation rock interaction effects in frequency-response function of arch dams. Earthquake Engineering and Structural Dynamics[J] . (1995)

DOI: 10.1002/eqe.4290241105

[5] J.W. Chavez and G.L. Fenves. Earthquake analysis of concrete gravity dams including base sliding. Earthquake Engineering and Structural Dynamics [J]. (1995)

DOI: 10.1002/eqe.4290240505

[6] K.L. Fok and A.K. Chopra. Earthquake analysis of arch dams including dam-water interaction, reservoir boundary absorption and foundation flexibility. Earthquake Engineering and Structural Dynamics [J]. (1986)

DOI: 10.1002/eqe.4290140202

[7] T. Touhei and T. Ohmachi. A FE-BE method for dynamic analysis of dam-foundation-reservoir system in the time domain. Earthquake Engineering and Structural Dynamics [J]. (1993)

DOI: 10.1002/eqe.4290220303

[8] X.L. Du, J.L. Wang and T.K. Hung. Effects of sediment on the dynamic pressure of water and sediment on dams. Chinese Science[J] . (2001)

[9] Q.Yang*, Y.R. Liu, Y,R. Chen and W.Y. Zhou. State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing, 100084, China.  Stability and reinforcement analyses of high arch dams by considering deformation effects[J]. Journal of Rock Mechanics and Geotechnical Engineering. 2010(04)

DOI: 10.29252/jafm.11.06.29141