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Earthquake stresses and effective damping in concrete gravity dams

  • Akpinar, Ugur (Department of Civil Engineering, Middle East Technical University) ;
  • Binici, Baris (Department of Civil Engineering, Middle East Technical University) ;
  • Arici, Yalin (Department of Civil Engineering, Middle East Technical University)
  • Received : 2013.07.31
  • Accepted : 2013.12.09
  • Published : 2014.03.25

Abstract

Dynamic analyses for a suite of ground of motions were conducted on concrete gravity dam sections to examine the earthquake induced stresses and effective damping. For this purpose, frequency domain methods that rigorously incorporate dam-reservoir-foundation interaction and time domain methods with approximate hydrodynamic foundation interaction effects were employed. The maximum principal tensile stresses and their distribution at the dam base, which are important parameters for concrete dam design, were obtained using the frequency domain approach. Prediction equations were proposed for these stresses and their distribution at the dam base. Comparisons of the stress results obtained using frequency and time domain methods revealed that the dam height and ratio of modulus of elasticity of foundation rock to concrete are significant parameters that may influence earthquake induced stresses. A new effective damping prediction equation was proposed in order to estimate earthquake stresses accurately with the approximate time domain approach.

Keywords

References

  1. Arici, Y. and Binici, B. (2011), "Seismic safety assessment of Andiraz dam", BAP Report No. 2010-03-03-1-00-20, Civil Engineering Department, METU, Ankara, TR.
  2. Bhattacharjee, S.S. and Leger, P. (1995), "Fracture response of gravity dams due to rise of reservoir elevation", J. Struct. Eng., 121(9), 1298-1305. https://doi.org/10.1061/(ASCE)0733-9445(1995)121:9(1298)
  3. Bougacha, S., Roësset, J. and Tassoulas, J. (1993), "Dynamic stiffness of foundations on fluid-filled poroelastic stratum", J. Eng. Mech., 119(8), 1649-1662. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:8(1649)
  4. Chopra, A.K. (1966), "Hydrodynamic pressures on dams during earthquakes", Report No. UCB/EERC-66/2-A, Earthquake Engineering Research Center, University of California, Berkeley, CA.
  5. Chuhan, Z., Jianwen, P. and Jinting, W. (2009), "Influence of seismic input mechanisms and radiation damping on Arch dam response", Soil Dym. Earthq. Eng., 29, 1282-1293. https://doi.org/10.1016/j.soildyn.2009.03.003
  6. Dasgupta, G. and Chopra, A.K. (1977), "Dynamic stiffness matrices for homogeneous viscoelastic half-planes", Report No. UCB/EERC-77/26, Earthquake Engineering Research Center, University of California, Berkeley, CA.
  7. Fenves, G. and Chopra, A.K. (1984), "Earthquake analysis and response of concrete gravity dams", Report No. UCB/EERC-84/10, Earthquake Engineering Research Center, University of California, Berkeley, CA.
  8. Fenves, G. and Chopra, A.K. (1984), "EAGD-84: a computer program for earthquake analysis of concrete gravity dams", Report No. UCB/EERC-84/11, Earthquake Engineering Research Center, University of California, Berkeley, CA.
  9. Fenves, G. and Chopra, A.K. (1986), "Simplified analysis for earthquake resistant design of concrete gravity dams", Report No. UCB/EERC-85/10, Earthquake Engineering Research Center, University of California, Berkeley, CA.
  10. Javanmardi, F., Leger, P. and Tinawi, R. (2005), "Seismic water pressure in cracked concrete gravity dams: Experimental study and theoretical modeling", J. Struct. Eng.- ASCE, 131(1), 139-150. https://doi.org/10.1061/(ASCE)0733-9445(2005)131:1(139)
  11. Leger, P. and Boughoufalah, M. (1989), "Earthquake input mechanisms for time-domain analysis of dam-foundation systems", Eng. Struct., 11, 37-46. https://doi.org/10.1016/0141-0296(89)90031-X
  12. Lotfi, V. and Arabshahi, H. (2008), "Earthquake response of concrete gravity dams including dam-foundation interface nonlinearities", Eng. Struct., 30, 3065-3073. https://doi.org/10.1016/j.engstruct.2008.04.018
  13. Lotfi, V., Roesset, J.M. and Tassoulas, J.L. (1987), "A technique for the analysis of the response of dams to earthquakes", Earthq. Eng. Struct. D., 15(4), 463-490. https://doi.org/10.1002/eqe.4290150405
  14. Mclean, P., Leger, P. and Tinawi, R. (2006), "Post-processing of finite element stress fields using dual kriging based methods for structural analysis of concrete dams", Finite Elem. Anal. Des., 42, 532-546. https://doi.org/10.1016/j.finel.2005.10.004
  15. Medina, F., Dominguez, J. and Tassoulas, J. (1990), "Response of dams to earthquakes including effects of sediments", J. Struct. Eng., 116(11), 3108-3121. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:11(3108)
  16. USACE (1995), "Seismic design provisions for roller compacted concrete dams", No. EP-1110-2-12, United States Army Corps of Engineers.
  17. USACE (2003), "Time-history dynamic analysis of concrete hydraulic structures", EM 1110-2-6051, United States Army Corps of Engineers.
  18. Westergaard, H.M. (1933), "Water pressures on dams during earthquakes", Trans. Am. Soc. Civil Eng., 98, 418-434.

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