Computers and Concrete

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A study about determination of preliminary design & minimum reinforcement ratios

  • KOC, Varol (Department of Civil Engineering, Ondokuz Mayis University) ;
  • EMIROGLU, Yusuf (Department of Civil Engineering, Ondokuz Mayis University)
  • Received : 2015.04.04
  • Accepted : 2016.02.29
  • Published : 2016.05.25
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Abstract

In the standards, minimum reinforcement ratios are presented as the least reinforcement ratios that bearing elements should have in a way to include all systems and in general. However, naturally these general minimum ratios might be presented as being lower than the normally required reinforcement ratios by criteria such as system size, bearing system arrangement, section situation and distributions of the elements and earthquake effect. In this case, minimum reinforcement ratios may remain as meaningless restrictions. Then grouping the criterion that might affect reinforcement ratios according to certain parameters and creating minimum reinforcement ratios regarding preliminary design will provide ease and safety during the project designing. Moreover, it will enable fast and simple examinations in the beginning of project control and evaluation process. By means of the data which could be defined as "preliminary design & minimum reinforcement ratios", a more realistic and safe restriction compared to general minimum reinforcement ratios could be presented. As a result of numerous comprehensive studies, reinforcement ratios to include all certain systems might be obtained. Today, thanks to the development level of finite elements programs which can make reinforced concrete modelling, with the studies that are impossible to carry out beforehand, this deficiency in the minimum reinforcement ratios in the standarts may at least be partially made up with the advisory regulation of preliminary design & minimum reinforcement ratios. As the structure of the system to be examined and the diversity of the parameters range from the specific to the general, preliminary design & minimum reinforcement ratios will approximate to general minimum reinforcement ratios in real terms. By focusing on a more specific system structure and diversity of the parameters, preliminary design and even design reinforcement ratios will be approximated. In this preliminary study, a route between these two extremes was attempted to be followed. Today, it is possible to determine suggested practical ratios for project designs through carrying out numerous studies.

Keywords

References

  1. Ashour, A.F. and Morley, C.T. (1993), "Three dimensional nonlineer finite element modelling of reinforced concrete structures", Finite Elem. Anal. Des., 15(1), 43-55. https://doi.org/10.1016/0168-874X(93)90069-3
  2. Athanassiadou, C.J. (2008), "Seismic performance of R/C plane frames irregular in elevation", Eng. Struct., 30(5), 1250-1261. https://doi.org/10.1016/j.engstruct.2007.07.015
  3. Beassason, B. and Sigfusson, T. (2001), "Capacity and earthquake response analysis of RC-shear walls", Nord. Concrete Res., 27, 1-14.
  4. Chan, H.C., Cheung Y.K. and Huang, Y.P. (1994), "Nonlinear modelling of reinforced concrete structures", Comput. Struct., 53(5), 1099-1107. https://doi.org/10.1016/0045-7949(94)90156-2
  5. CSI. SAP2000 ultimate v16 (2013), Structural analysis program, Berkeley, California, USA.
  6. DBYBHY-07 (2007), "Specification for buildings to be constructed in earthquake prone areas", Ministry of Public Works and Resettlement, Ankara, Turkey.
  7. Erduran, E. and Yakut, A. (2003), "Drift based damage functions for reinforced concrete columns", Comput. Struct., 82, 121-130.
  8. Ersoy, U. (2013), "A simple approach for preliminary design of reinforced concrete structures to be built in seismic regions", Technical J. Turkish Chamber of Civil Eng., 24, 6559-6574.
  9. Greeshma, S., Jaya K.P. and Annilet, S.L. (2011), "Analysis of flanged shear wall using ansys concrete model", Int. J. Civil Struct. Eng., 2(2), 454-465.
  10. Hamil, S.J., Baglin, P.S. and Scott, R.H. (2004), "Finite element modeling of reinforce concrete beamcolumn connections", University of Durham.
  11. Hidalgo, P.A., Jordan, R.M. and Martinez, M.P. (2002), "An analytical model to predict the inelastic seismic behavior of shear-wall, reinforced concrete structures", Eng. Struct., 24(1), 85-98. https://doi.org/10.1016/S0141-0296(01)00061-X
  12. Hognestad, E. (1951), "A study on combined bending and axial load in reinforced concrete members", University of Illionis Engineering Experiment Station, Urbana-Champaign, IL, 43-46.
  13. Kazaz, I, Yakut, A. and Gulkan, P. (2006), "Numerical simulation of dynamic shear wall tests: a benchmark study", Comput. Struct., 84(8), 549-562. https://doi.org/10.1016/j.compstruc.2005.11.002
  14. Kazaz, I., Gulkan, P. and Yakut, A. (2012), "Performance limits for structural walls: an analytical perspective", Eng. Struct., 43, 105-119. https://doi.org/10.1016/j.engstruct.2012.05.011
  15. Kotsovas, M.D., Pavlovic, M.N. and Lefas, I.D. (1992), "Two-and three-dimensional nonlinear finiteelement analysis of structural walls", Published in "Nonlinear Seismic Analysis and Design of Reinforced Concrete Buildings", edited by Fajfar P. and Krawinkler H., Elsevier Applied Science, pp. 215-227.
  16. Kwak, H.G and Kim, J. (2008), "Optimum design of reinforced concrete plane frames based on predetermined section database", Comput.Aid. Des., 40(3), 396-408. https://doi.org/10.1016/j.cad.2007.11.009
  17. Kwak, H.G. and Kim, D.Y. (2004), "FE analysis of RC shear walls subject to monotonic loading", Mag. Concrete Res., 56(7), 387-403. https://doi.org/10.1680/macr.2004.56.7.387
  18. Lee, D.H., Park, M.K., Oh, J.Y., Kim, K.S., Im, J.H. and Seo, S.Y. (2014), "Web-shear capacity of prestressed hollow-core slab unit with consideration on the minimum shear reinforcement requirement", Comput. Concrete, 14(3), 211-231. https://doi.org/10.12989/cac.2014.14.3.211
  19. Musmar, M.A. (2013), "Analysis of shear wall with openings using solid65 element", Jordan J. Civil Eng., 7(2), 164-173.
  20. Ngo, D. and Scordelis, A.C. (1967), "Finite element analysis of reinforced concrete beams", J. ACI, 64(3), 152-163.
  21. Nicolas, I., Nguyen, X.H., Kotronis, P., Mazars, J. and Reynouard, J.M. (2008), "Shaking table tests of lightly RC walls: numerical simulations", J. Earthq. Eng., 12(6), 849-878. https://doi.org/10.1080/13632460801890430
  22. Palermo, D. and Vecchio, F.J. (2007), "Simulation of cyclically loaded concrete structures based on the finite-element method", ASCE J. Struct. Eng., 133(5), 728-738. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:5(728)
  23. Park, M.K., Lee, D.H., Ju, H., Hwang, J.H., Choi, S.H. and Kim, K.S. (2015), "Minimum shear reinforcement ratio of prestressed concrete members for safe design", Struct. Eng. Mech., 56(2), 317-340. https://doi.org/10.12989/sem.2015.56.2.317
  24. Structural Analysis Guide of Ansys (2013), ANSYS Inc. Release 14.0, Canonsburg, PA USA.
  25. Torres, L1., Lopez-Almansa, F., Cahis, X. and Bozzo, L.M. (2003), "A numerical model for sequential construction, repairing and strengthening of 2-D concrete frames", Eng. Struct., 25(3), 323-336. https://doi.org/10.1016/S0141-0296(02)00161-X
  26. TS 498 (1997), "Design loads for buildings", Turkish Standarts Institue, Ankara, Turkey.
  27. TS500 (2000), "Requirements for design and construction of reinforced concrete structures", Turkish Standarts Institue, Ankara, Turkey.
  28. Vallenas, J.M., Bertero, V.V. and Popov, E.P. (1979), "Hysteretic behavior of reinforced concrete structural walls", Report No. UCB/EERC-79/20, Berkeley, University of California, USA.
  29. Von Mises, R. (1913), "Mechanik der festen Koper im plastisch deformablen Zustand", Nachrichten von der Gesellschaft der Wissenchaften zu Gottingen, Mathematisch-Physikalische Klasse, 1, 582-592.
  30. Willam, K.J. and Warnke, E.D. (1975), "Constitutive model for the triaxial behaviour of concrete", Proceedings of the International Association for Bridge and Structural Engineering, ISMES, Bergama, Italy, 19, 174-203.

Cited by

  1. Examining the Behaviour of a Reinforced Concrete System Under Horizontal Loads and Determination of Preliminary Design Reinforcement Ratios vol.15, pp.7, 2017, https://doi.org/10.1007/s40999-017-0208-5