Structural Engineering and Mechanics

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Investigation of wall flexibility effects on seismic behavior of cylindrical silos

  • Received : 2014.05.27
  • Accepted : 2014.10.09
  • Published : 2015.01.10
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Abstract

This paper is concerned with effects of the wall flexibility on the seismic behavior of ground-supported cylindrical silos. It is a well-known fact that almost all analytical approximations in the literature to determine the dynamic pressure stemming from the bulk material assume silo structure as rigid. However, it is expected that the horizontal dynamic material pressures can be modified due to varying horizontal extensional stiffness of the bulk material which depends on the wall stiffness. In this study, finite element analyses were performed for six different slenderness ratios according to both rigid and flexible wall approximations. A three dimensional numerical model, taking into account bulk material-silo wall interaction, constituted by ANSYS commercial program was used. The findings obtained from the numerical analyses were discussed comparatively for rigid and flexible wall approximations in terms of the dynamic material pressure, equivalent base shear and bending moment. The numerical results clearly show that the wall flexibility may significantly affects the characteristics behavior of the reinforced concrete (RC) cylindrical silos and magnitudes of the responses under strong ground motions.

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References

  1. Abdel-Rahim, H.H.A. (2014), "Response the cylindrical elevated wheat storage silos to seismic loading", J. Eng., 4(1), 42-55.
  2. ANSYS Inc. (2009a), Ansys 12, Canonsburg, PA.
  3. ANSYS Inc. (2009b), Contact Technology Guide, Release 12, Canonsburg, PA.
  4. Ayuga, F., Guaita, M. and Aguado, P. (2001), "Static and dynamic silo loads using finite element models", J. Agric. Eng. Res., 78(3), 299-308. https://doi.org/10.1006/jaer.2000.0640
  5. Braun, A. and Eibl, J. (1995), "Silo pressures under earthquake loading", Proceedings of X International Conference on Reinforced and Post-Tensioned Concrete Silo and Tanks, Cracow, Poland.
  6. Briassoulis, D. (2009), Cylindrical shells: other actions, Eds. Brown, C.J. and Nielsen, J., Silos:Fundamental of Theory, Behavior and Design, Taylor & Francis, London and New York.
  7. Chen, J.F., Yu, S.K., Ooi, J.Y. and Rotter, J.M. (2001), "Finite-element modeling of filling pressures in a full-scale silo", J. Eng. Mech., 127, 1058-1066. https://doi.org/10.1061/(ASCE)0733-9399(2001)127:10(1058)
  8. Dogangun, A., Karaca, Z., Durmus, Ah. and Sezen, H., (2009), "Cause of damage and failures in silo structures", J. Perform. Constr. Facil., 23(2), 65-71. https://doi.org/10.1061/(ASCE)0887-3828(2009)23:2(65)
  9. Durmus, A. (2013), "Investigation of seismic behavior of reinforced concrete cylindrical silos considering bulk material- structure-soil interaction", Ph.D. Dissertation, Karadeniz Technical University, Trabzon, Turkey.
  10. Eurocode-1 (2006), Basis of design and actions on structures - Part 4: Actions in silos and tanks, EN 1991-4.
  11. Eurocode-8 (2006), Design of structures for earthquake resistance - Part 4: Silos, tanks, and pipelines, EN 1998-4.
  12. Goodey, R.C., Brown, C.J. and Rotter, J.M. (2003), "Verification of a 3-dimensional model for filling pressures in square thin-walled silos", Eng. Struct., 25(14), 1773-1783. https://doi.org/10.1016/j.engstruct.2003.07.003
  13. Goodey, R.C., Brown, C.J. and Rotter, J.M. (2006), "Predicted patterns of filling pressures in thin-walled square silos", Eng. Struct., 28(1), 109-119. https://doi.org/10.1016/j.engstruct.2005.08.004
  14. Guines, D., Ragneau, E. and Kerour, B. (2001), "3D Finite-element simulation of a square silo with flexible walls", J. Eng. Mech., 127(10), 1051-1057. https://doi.org/10.1061/(ASCE)0733-9399(2001)127:10(1051)
  15. Harris, E.C. and von Nad, J.D. (1985), "Experimental determination of effective weight of stored material for use in seismic design of silos", ACI J., 82(6), 828-833.
  16. Hawkins, J.C. and Messer, H.J.M. (1977), "Flexible walls for bunker silos", J. Agricult. Eng. Res., 22(3), 259-270. https://doi.org/10.1016/0021-8634(77)90047-6
  17. Holler, S. and Meskouris, K. (2006), "Granular material silos under dynamic excitation: numerical simulation and experimental validation", J. Struct. Eng., 132(10), 1573-1579. https://doi.org/10.1061/(ASCE)0733-9445(2006)132:10(1573)
  18. Jarrett, N.D. (1991), "A study of the influence of wall flexibility on pressure in rectangular silos", Ph.D. Dissertation, Brunel University, London, United Kingdom.
  19. Jarrett, N.D., Brown, C.J. and Moore, D.B. (1995), "Pressure measurements in a rectangular silo", Geotechnique, 45(1), 95-104. https://doi.org/10.1680/geot.1995.45.1.95
  20. Mahmoud, A.A. and Abdel-Sayed, G. (1981), "Loading on shallow cylindrical flexible grain bins", J. Powder Bulk Solid. Tech., 5(3), 12-19.
  21. Martinez, M.A., Alfaro, I. and Doblare, M. (2002), "Simulation of axisymmetric discharging in metallic silos. Analysis of the induced pressure distribution and comparison with different standards", Eng. Struct., 24, 1561-1574. https://doi.org/10.1016/S0141-0296(02)00100-1
  22. Nateghi, F. and Yakhchalian, M. (2011), "Seismic behavior of reinforced concrete silos considering granular material-structure interaction", Procedia Eng., 14, 3050-3058. https://doi.org/10.1016/j.proeng.2011.07.384
  23. Ooi, J.Y. and Rotter, J.M. (1990), "Wall pressures in squat steel silos from simple finite element analysis", Comput. Struct., 37(4), 361-74. https://doi.org/10.1016/0045-7949(90)90026-X
  24. Rombach, G. and Eibl, J. (2009), A dynamic finite element model for silo pressures and solids flow, Eds. Brown, C.J. and Nielsen, J., Silos: Fundamental of Theory, Behavior and Design, Taylor & Francis, London and New York.
  25. Rombach, G. and Martinez, J. (2009), Introduction and scope, Eds. Brown, C.J. and Nielsen, J., Silos: Fundamental of Theory, Behavior and Design, Taylor & Francis, London and New York.
  26. Rotter, J.M. and Hull, T.S. (1989), "Wall loads in squat steel silos during earthquakes", Eng. Struct., 11(3), 139-147. https://doi.org/10.1016/0141-0296(89)90002-3
  27. Sasaki, Y., Yoshimura, J. and Dohkoshi, J. (1986), "Experimental studies of the earthquake response characteristics of concrete stave silos", J. Soc. Agricult. Struct., 17(2), 24-33.
  28. Sasaki, Y. and Yoshimura, J. (1992), "Dynamic discrete modeling and computer simulation of seismic response of concrete stave silos with structural discontinuity", Proceedings of the 10th world conference on earthquake engineering, Madrid, Spain.
  29. Shimamoto, A., Kodama, M. and Yamamura, M. (1982), "Shaking table tests of cylindrical coal storage silo models", Proceedings of the 6th Japan earthquake engineering symposium, Tokyo, Japan.
  30. Silvestri, S., Gasparini, G., Trombetti, T. and Foti, D. (2012), "On the evaluation of the horizontal forces produced by grain-like material inside silos during earthquakes", Bull Earthq. Eng., 10, 1535-1560. https://doi.org/10.1007/s10518-012-9370-y
  31. Tatko, R. and Kobielak, S. (2008), "Horizontal bulk material pressure in silo subjected to impulsive load", Shock Vib., 15, 543-550. https://doi.org/10.1155/2008/289317
  32. Veletsos, A.S. and Younan, A.H. (1998), "Dynamics of solid-containing tanks. II: Flexible tanks", J. Struct. Eng., 124(1), 62-70. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:1(62)
  33. Vidal, P., Gallego, E., Guaita, M. and Ayuga, F. (2008), "Finite element analysis under different boundary conditions of the filling of cylindrical steel silos having an eccentric hopper", J. Constr. Steel Res., 64, 480-492. https://doi.org/10.1016/j.jcsr.2007.08.005
  34. Wu, YH, (1990), "Static and dynamic analysis of flow of bulk materials through silos", Ph.D. Dissertation, Wollongong University, New South Wales, Australia.
  35. Younan, A.H. and Veletsos, A.S. (1998), "Dynamics of solid-containing tanks. I: Rigid tanks", J. Struct. Eng., 12(1), 52-61.
  36. Zandi, Y., Karaca, Z., Durmus, Ay., Dogangun, A. and Durmus, Ah, (2012), "Investigating the comparative analysis of cylindrical silos subjected to earthquake by analytical and numerical methods", Trend. Appl. Sci. Res., 7(6), 407-420. https://doi.org/10.3923/tasr.2012.407.420

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