Design of Stilling Basin Linings with Sealed and Unsealed Joints
Publication: Journal of Hydraulic Engineering
Volume 142, Issue 12
Abstract
One of the main causes of lining damage in stilling basins and at the toe of chute spillways is the global instantaneous uplift forces due to the difference in pressure acting on the upper and the lower surface of protection slabs or rock elements. Spillway stilling basin linings can be built according to two different techniques: using sealed joints or unsealed joints. In the case of sealed joints, the pressure underneath the slab is constant and the uplift force results from the pressure fluctuations acting on the slab. In the case of unsealed joints, the pressure propagation at the lower surface of the slab, being transferred through the joints, should also be considered. The aim of the paper is to study, define, and compare the design criteria in these two cases. In the present study, the pressure field on the slab is evaluated according to a recent method based on the Taylor hypothesis, whereas the pressure propagation under the slab is computed by a new 3D model based on unsteady flow analysis of seepage through porous media. By this approach, it is possible to consider the effect of finite thickness foundation layers, typical in the case of weirs for run-of-river power plants, earth dams, and rock-fill dams. Furthermore, to complete the presented design criteria, the dynamic behavior of anchored slabs is experimentally investigated with reference to the sealed joint case due to a lack of studies in the literature.
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Acknowledgments
This research has been carried out using the experimental facilities of the Hydraulic Laboratory of the University of Trieste, Italy. The work was part of the Ph.D. thesis of the first author. The present study has been financially supported by the University of Trieste, through the project FRA 2013: Modellistica numerica e sperimetale di fenomeni di erosione localizzata in alvei fluviali.
References
Abdul Khader, M. H., and Elango, K. (1974). “Turbulent pressure field beneath a hydraulic jump.” J. Hydraul. Res., 12(4), 469–489.
Barjastehmaleki, S. (2016). “Spillway stilling basins and plunge pools lining design.” Ph.D. thesis, Univ. of Trieste, Trieste, Italy.
Barjastehmaleki, S., Fiorotto, V., and Caroni, E. (2015). “Stochastic analysis of the pressure field in the hydraulic jump region via Taylor hypothesis.” Proc, 36th World Congress, International Association of Hydraulic Research, IAHR, Madrid, Spain.
Barjastehmaleki, S., Fiorotto, V., and Caroni, E. (2016). “Spillway stilling basins lining design via Taylor hypothesis.” J. Hydraul. Eng., 04016010.
Bear, J., and Sorek, S. (1990). “Evolution of governing mass and momentum balances following an abrupt pressure impact in a porous medium.” Transp. Porous Media, 5(2), 169–185.
Belicchi, M., Cerlini, D., Maione, U., Fiorotto, V., and Volpe, F. (2008). “Mignano dam rehabilitation.” L’Acqua, 6, 17–32.
Bellin, A., and Fiorotto, V. (1995). “Direct dynamic force measurement on slab in spillway stilling basin.” J. Hydraul. Eng., 686–693.
Bendat, J. S., and Piersol, A. G. (1971). Random data: Analysis and measurement procedures, Wiley, New York.
Bowers, C. E., and Toso, J. (1988). “Karnafouli project, model studies of spillway damage.” J. Hydraul. Eng., 469–483.
Bowers, C. E., and Tsai, F. H. (1969). “Fluctuating pressure in spillway stilling basins.” J. Hydraul. Div., 95(6), 2071–2080.
Caroni, E., Fiorotto, V., and Belicchi, M. (2002). “Slab stability in hydraulic jump stilling basins as derived from physical modeling.” Rock scour due to falling high-velocity jets, A. Schleiss and E. Bollaert, eds., Balkema Lisse, Netherlands, 43–54.
de Marsily, G. (1986). Quantitative hydrogeology, Academic Press, Orlando, FL.
Fiorotto, V., and Caroni, E. (2014). “Unsteady seepage applied to lining design in stilling basins.” J. Hydraul. Eng., 04014025.
Fiorotto, V., and Rinaldo, A. (1992a). “Fluctuating uplift and lining design in spillway stilling basins.” J. Hydraul. Eng., 578–596.
Fiorotto, V., and Rinaldo, A. (1992b). “Turbulent pressure fluctuations under hydraulic jump.” J. Hydraul. Res., 30(4), 499–520.
Fiorotto, V., and Salandin, P. (2000). “Design of anchored slabs in spillway stilling basins.” J. Hydraul. Eng., 502–512.
Hinze, J. O. (1959). Turbulence, McGraw-Hill, New York.
Krylov, A., Sorek, S., Levy, A., and Ben-Dor, G. (1996). “Simple waves in saturated porous media.” JSME Ser. B, 39(2), 294–298.
Liu, P. Q., and Li, A. H. (2007). “Model discussion on pressure fluctuation propagation within lining slab joints in stilling basins.” J. Hydraul. Eng., 618–624.
Lopardo, R. A., and Henning, R. E. (1985). “Experimental advances on pressure fluctuation beneath hydraulic jumps.” Proc, 21st Congress, International Association of Hydraulic Research, Vol. 3, IAHR, Madrid, Spain.
Mahzari, M., and Schleiss, A. J. (2010). “Dynamic analysis of anchored concrete linings of plunge pools loaded by high velocity jet impacts issuing from dam spillways.” Dam Eng., 20(4), 307–327.
Sanchez Bribiesca, J. S., and Capella Viscaino, A. C. (1973). “Turbulent effects on the lining of stilling basin.” Proc., 11th Int. Congress on Large Dams, Vol. 11, International Commission on Large Dams, Paris, 1575–1592.
Toso, J. W., and Bowers, C. E. (1988). “Extreme pressures in hydraulic jump stilling basins.” J. Hydraul. Eng., 829–843.
Vasiliev, O. F., and Bukreyev, V. I. (1967). “Statistical characteristics of pressures fluctuations in the region of hydraulic jump.” Proc, 12th Congress, International Association of Hydraulic Research, Vol. 2, IAHR, Madrid, Spain.
Wang, M., Jiang, C., Xia, B., and Shang, S. (1984). “Stochastic analysis of pressure fluctuations beneath hydraulic jump and primary discussion on scale of turbulence.” Proc., 4th IAHR Int. Symp. on Stochastic Hydraulics, Univ. of Illinois, Champaign, IL, 199–209.
Wilson, E. H., and Turner, A. A. (1972). “Boundary layer effects on hydraulic jump location.” J. Hydraul. Div., 98(HY7), 1127–1142.
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Published In
Journal of Hydraulic Engineering
Volume 142 • Issue 12 • December 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Oct 3, 2015
Accepted: Jun 8, 2016
Published online: Jul 28, 2016
Published in print: Dec 1, 2016
Discussion open until: Dec 28, 2016
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