Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Wave load resistance of high strength concrete slender column subjected to eccentric compression

  • Jayakumar, M. (Department of Civil and Construction Engineering, Curtin University) ;
  • Rangan, B.V. (Faculty of Engineering and Computing, Curtin University)
  • Received : 2012.11.27
  • Accepted : 2014.03.05
  • Published : 2014.05.10
⟨ Previous Next ⟩

Abstract

A computer based iterative numerical procedure has been developed to analyse reinforced high strength concrete columns subjected to horizontal wave loads and eccentric vertical load by taking the material, geometrical and wave load non-linearity into account. The behaviour of the column has been assumed, to be represented by Moment-Thrust-Curvature relationship of the column cross-section. The formulated computer program predicts horizontal load versus deflection behaviour of a column up to failure. The developed numerical model has been applied to analyse several column specimens of various slenderness, structural properties and axial load ratios, tested by other researchers. The predicted values are having a better agreement with experimental results. A simplified user friendly hydrodynamic load model has been developed based on Morison equation supplemented with a wave slap term to predict the high frequency non-linear impulsive hydrodynamic loads arising from steep waves, known as ringing loads. A computer program has been formulated based on the model to obtain the wave loads and non-dimensional wave load coefficients for all discretised nodes, along the length of column from instantaneous free water surface to bottom of the column at mud level. The columns of same size and material properties but having different slenderness ratio are analysed by the developed numerical procedure for the simulated wave loads under various vertical thrust. This paper discusses the results obtained in detail and effect of slenderness in resisting wave loads under various vertical thrust.

Keywords

References

  1. ACI 318 (2008), Building Code Requirements for Reinforced Concrete (ACI 318-08), American Concrete Institute, Detroit.
  2. Attard, M.M. and Stewart, M.G. (1997), "An Improved Stress Block Model for High Strength Concrete", Research Report No. 154.10.1997, ISBN 0 725910070, The University of Newcastle, Australia.
  3. Azizinamini, A., Kuska, S.S.B., Brungardt, P. and Hatfield, E. (1994), "Seismic behavior of square high strength concrete columns", ACI Struct. J., 91(3), 336-345.
  4. Baudic , S.F., Williams, A.N. and Kareem, A. (2000), "A two-dimensional numerical wave flume: part 2- hydrodynamic loads and structural responses", Proceeding of ETCE/OMAE 2000 Joint conference Energy for the New Millennium, New Orleans, February.
  5. Berrera, A.C., Bonet, J.L., Romero, M.L. and Miguel, P.F. (2011), "Experimental tests of slender reinforced concrete columns under combined axial load and lateral force", Eng. Struct., 33, 3676-3689. https://doi.org/10.1016/j.engstruct.2011.08.003
  6. Bouchaboub, M. and Samai, M.l. (2013), "Nonlinear analysis of slender high-strength R/C columns under biaxial bending and axial compression", Eng. Struct., 40, 37-42.
  7. Cambell, I.M.C. and Weynberg, P.M. (1979), "Slam load histories on cylinder", Report No.416, Wolfson Marine Craft Unit, University of Southampton.
  8. Collins, M.P., Mitchell, D. and MacGregor, J.G. (1983), "Structural design considerations for high- strength concrete", Concrete Int., 15(5), 27-34.
  9. Davies, K.B., Leverette, S.J. and Spillane, M.W. (1994), "Ringing of TLP and GBS platforms", Proceedings BOSS'94, Cambridge, MA, 569-585.
  10. Doran, B. (2009), "Numerical simulation os conventional RC columns under concentric loading", Mater. Des., 30, 2158-2166. https://doi.org/10.1016/j.matdes.2008.08.033
  11. Hugo, R., Humberto, V., Antonio, A. and Anibal,. C. (2012), "Comparative efficiency analysis of different nonlinear modeling strategies to simulate the biaxial response of RC columns", Earthq. Eng. Eng. Vib., 11(4), 553-566. https://doi.org/10.1007/s11803-012-0141-1
  12. Jayakumar. M., Thiagarajan, K.P. and Rangan, B.V. (2004)m "Response of high strength concrete columns / piles under wave impact loads", The International Conference on Structural and Foundation Failures, Singapore, August.
  13. Jayakumar. M. (2010), "Non-linear wave load model to predict the high frequency deep wave impact forces on offshore structures", International Conference on Advances in Interaction and Multiscale Mechanics, AIMM10, Jeju, May-June.
  14. Leite, L., Bonet, J.L., Miguel, P.F. and Fernondaz-Prada, M.A. (2013), "Experimental research on high strength concrete slender columns subjected to compression and uniaxial bending with unequal eccentricities at the ends", Eng. Struct., 48, 220-232. https://doi.org/10.1016/j.engstruct.2012.07.039
  15. Morison, J.R., O'Brien, M.P., Johnson, J.W. and Schaff, S.A. (1950), "The force exerted by surface waves on piles", Petrol. Tran., AIME, 189, 149-159.
  16. Popovics, S. (1973), "A numerical approach to the complete stress-strain curve of concrete", Cement Concrete Res., 3(5), 583-599. https://doi.org/10.1016/0008-8846(73)90096-3
  17. Sarker, P.K., Adolphus, S., Patterson, S. and Rangan, B.V. (2000), "High strength concrete columns subjected to single or double curvature bending", PCI/FHWA/FIB Inetrnational Symposium on High Performance Concrete, Orlando, September.
  18. Sarpkaya, T. and Isaacson, M. (1981), "Mechanics of wave forces on offshore structures," Van Nostrand Reinhold.
  19. Zou, J. and Kim, C.H. (1995), "Extreme wave kinematics and impact loads on fixed truncated circular cylinder", Proceedings of Fifth International Offshore and Polar Engineering Conference, The Hague, The Netherlands, June.

Cited by

  1. Modification of endurance wave analysis based on New-wave theory vol.12, pp.3, 2017, https://doi.org/10.1080/17445302.2016.1149319