Volume 13 Issue 3
Sep.  2020
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Mahdi Ben Ftima, Stéphane Lafrance, Pierre Léger. 2020: Three-dimensional modelling of shear keys in concrete gravity dams using an advanced grillage method. Water Science and Engineering, 13(3): 223-232. doi: 10.1016/j.wse.2020.09.003
Citation: Mahdi Ben Ftima, Stéphane Lafrance, Pierre Léger. 2020: Three-dimensional modelling of shear keys in concrete gravity dams using an advanced grillage method. Water Science and Engineering, 13(3): 223-232. doi: 10.1016/j.wse.2020.09.003

Three-dimensional modelling of shear keys in concrete gravity dams using an advanced grillage method

doi: 10.1016/j.wse.2020.09.003
Funds:  This work was supported by the Quebec Fund for Research on Nature and Technology (Grant No. 189651) and the Natural Science and Engineering Research Council of Canada (Grant No. 2016-06391).      
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  • Corresponding author: Mahdi Ben Ftima
  • Received Date: 2019-09-26
  • Rev Recd Date: 2020-05-02
  • Contraction joint shear keys are resilient features of gravity dams that can be considered to increase the sliding safety factors or minimise seismic residual sliding displacements, allowing costly remedial actions to be avoided. This paper presents a novel, robust, and computationally efficient three-dimensional (3D) modelling and simulation strategy of gravity dams, using a series of adjacent cantilever beam elements to represent individual monoliths. These monoliths are interconnected in the longitudinal direction by 3D no-tension link elements representing the lumped shear key stiffness contributions at a particular elevation. The objective is to assess the shear key internal force demands, including the axial force, shear, and moment demands. Shear key demand-capacity ratios can then be assessed with related multi-axial failure envelopes. The 3D link element stiffness coefficients were derived from a series of 3D finite element (FE) solid models with a detailed representation of geometrical features of multiple shear keys. The results from the proposed method based on advanced grillage analysis show strong agreement with reference solutions from 3D FE solid models, demonstrating high accuracy and performance of the proposed method. The application of the proposed advanced grillage method to a dam model with two monoliths clearly shows the advantage of the proposed method, in comparison to the classical approach used in practice.

     

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  • Alcalde, M., Cifuentes, H., Medina, F., 2013a. Influence of the number of keys on the shear strength of post-tensioned dry joints. Materiales de Construcción  63(310), 297-307 (in Spanish). https://doi.org/10.3989/mc.2013.07611.
    Alcalde, M., Cifuentes, H., Medina, F., 2013b. Shear strength of dry keyed joints and comparison with different formulations. In: Proceedings of the VIII International Conference on Fracture Mechanics of Concrete and Concrete Structures. Toledo.
    Azmi, M., Paultre, P., 2002. Three-dimensional analysis of concrete dams including contraction joint non-linearity. Engineering Structures 24(6), 757-771. https://doi.org/10.1016/S0141-0296(02)00005-6.
    Curtis, D.D., 2011. Estimated shear strength of shear keys and bonded joints in concrete dams. In: Proceedings of the 31st Annual Conference of United States Society on Dams (USSD). USSD, San Diego.
    Dowdell, D., Fan, B.H., 2004. Practical aspects of engineering seismic dam safety. In: Proceedings of the 13th World Conference on Earthquake Engineering, Vancouver.
    Du, C.B., Jiang, S.Y., 2010. Nonlinear dynamic responses of arch dam with shear keys. Mathematical and Computational Applications 15(5), 828-833. https://doi.org/10.3390/mca15050828.
    Federal Emergency Management Agency (FEMA), 2014. Selecting Analytic Tools for Concrete Dams Address Key Events along Potential Failure Mode Paths. Report no. FEMA P-1016.  
    Furgani, L., Imperatore, S., Nuti, C., 2011. Seismic analysis of gravity dams: From simple to complex. In: Proceedings of the 14th ANIDIS Conference of Seismic Engineering in Italy. Bari. (in Italian)  
    Furgani, L., Imperatore, S., Nuti, C., 2012. Seismic assessment method for concrete gravity dams. In: Proceedings of the 15th World Conference on Earthquake Engineering. Lisbon.
    Ghobarah, A., El-Nady, A., Aziz, T., 1994. Simplified dynamic analysis for gravity dams. ASCE Journal of Structural Engineering 120(9), 2697-2715. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:9(2697).
    Guerra, A., Nuss, L., 2007. Shear Keys Research Project: Literature Review and Finite Element Analysis. Report No. DSO-07-05. U.S. Bureau of Reclamation, Denver.
    Gunn, R.M., 2005. The design of shear keys for large arch dams in seismic regions. In: Proceedings of the 73rd Annual Meeting of International Commission on Large Dams (ICOLD). ICOLD, Teheran.
    Hibbitt, H.D., Karlson, B.I., Sorensen, E.P., 2014. ABAQUS Version 6.14, Finite Element Program. Hibbitt, Karlson, and Sorensen Inc., Providence.
    Hughes, A., Tarbox, G., Sadden, B., 2016. Using the trial load method to optimize the feasibility design of Watana Dam. In: Proceedings of the 36th Annual Conference of United States Society on Dams (USSD). USSD, Denver, pp. 695-710.
    Jiang, S.Y., Du, C.B., Yuan, J.W., 2011. Effects of shear keys on nonlinear seismic responses of an arch-gravity dam. Science China Technological Sciences 54 (s1), 18-27. https://doi.org/10.1007/s11431-011-4613-8.
    Kaneko, Y., Connor, J.J., Triantafillou, T.C., Leung, C.L., 1993a. Fracture mechanics approach for failure of concrete shear key, I: Theory. ASCE Journal of Engineering Mechanic 119(4), 681-700. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:4(681).
    Kaneko, Y., Connor, J.J., Triantafillou, T.C., Leung, C.L., 1993b. Fracture mechanics approach for failure of concrete shear key, II: Verification. ASCE Journal of Engineering Mechanics 119(4), 701-719. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:4(701).
    Lau, D.T., Noruziaan, B., Razaqpur, A.G., 1998. Modelling of contraction joint and shear sliding effects on earthquake response of arch dams. Earthquake Engineering & Structural Dynamic 27(10), 1013-1029. https://doi.org/10.1002/(SICI)1096-9845(199810)27:10<1013::AID-EQE765>3.0.CO;2-0.
    Lund, S.G., Boggs, H.L., 1994. Soda Dam: Three-dimensional analysis of a concrete gravity dam. In: Waterpower '93, Proceedings of the International Conference on Hydropower. ASCE,  Nashville..
    New Zealand Society on Large Dams (NZSOLD), 2015. New Zealand Dam Safety Guidelines. NZSOLD.
    Omidi, O., Lotfi, V., 2017. Seismic plastic-damage analysis of mass concrete blocks in arch dams including contraction and peripheral joints. Soil Dynamics and Earthquake Engineering 95, 118-137. https://doi.org/10.1016/j.soildyn.2017.01.026.
    Osterele, J.P., Bazan, E., Rizzo, P.C., Weatherford, C., 1993. Three-dimensional stability analysis of Carpenter Dam. In: Proceedings of Geotechnical Practice in Dam Rehabilitation, ASCE Geotechnical Special Publication, No. 35. ASCE, Raleigh, pp. 86-99.
    Sangkhon, A., Pisitpaibool, C., 2017. Shear strength test of joint with different geometric shapes of shear keys between segments of precast segmental bridge. International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies 8(1), 23-37.
    U.S. Bureau of Reclamation (USBR),1976. Design of Gravity Dams. USBR, Denver.
    Wang, G.H., Wang, Y.X., Lu, W.B., Yu, M., Wang, C., 2017. Deterministic 3D seismic damage analysis of Guandi concrete gravity dam: A case study. Engineering Structures 148, 263-276. https://doi.org/10.1016/j.engstruct.2017.06.060.
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