Computers and Concrete

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Application of unified equivalent frame method to two-way slab structures with beams

  • Choi, Seung-Ho (Department of Architectural Engineering, University of Seoul) ;
  • Lee, Deuck Hang (Department of Civil Engineering, Nazarbayev University) ;
  • Oh, Jae-Yuel (Department of Architectural Engineering, University of Seoul) ;
  • Cho, Hae-Chang (Department of Architectural Engineering, University of Seoul) ;
  • Lee, Jae-Yeon (Division of Architecture, Mokwon University) ;
  • Kim, Kang Su (Department of Architectural Engineering, University of Seoul)
  • Received : 2018.04.11
  • Accepted : 2018.09.29
  • Published : 2018.10.25
⟨ Previous Next ⟩

Abstract

The current design codes present an equivalent frame method (EFM) for the analysis and design of two-way slab structures. However, since the EFM was developed to be suitable for two-way slab structures subjected to gravity loads only, it brings many problems in its application to the analysis of two-way slabs to which gravity and lateral loads are applied simultaneously. Therefore, authors proposed the unified equivalent frame method (UEFM) that can analyze the structural behavior of flat-plate slab systems subjected to gravity and lateral loads in their previous studies. In this study, the UEFM was modified to be applicable to the two-way slab system with beams. In addition, the accuracy of the proposed UEFM was then examined by comparing it to the lateral behaviors of the two-way slab specimens.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

References

  1. ACI Committee 318 (2014), Building Code Requirements for Structural Concrete and Commentary (ACI 318-14), American Concrete Institute, Farmington Hills, MI.
  2. Alexander, S.D.B. and Simmonds, S.H. (1987), "Ultimate strength of slab-column connections", ACI Struct. J., 84(3), 255-261.
  3. Almeida, A.F.O., Inacio, M.M.G., Lucio, V.J.G. and Ramos, A.P. (2016), "Punching behaviour of RC flat slabs under reversed horizontal cyclic loading", Eng. Struct., 117(1), 204-219. https://doi.org/10.1016/j.engstruct.2016.03.007
  4. Choi, S.H., Lee, D.H., Oh, J.Y., Kim, K.S., Lee, J.Y. and Lee, K.S. (2017), "Unified equivalent frame method for posttensioned flat plat slab structures", Comput. Concrete, 20(6), 663-670. https://doi.org/10.12989/CAC.2017.20.6.663
  5. Choi, S.H., Lee, D.H., Oh, J.Y., Kim, K.S., Lee, J.Y. and Shin, M.S. (2014), "Unified equivalent frame method for flat plate slab structures under combined gravity and lateral loads-Part 2: verification", Earthq. Struct., 7(5), 735-751. https://doi.org/10.12989/eas.2014.7.5.735
  6. Corley, W.G. and Jirsa, J.O. (1970), "Equivalent frame analysis for slab design", ACI J. Proc., 67(11), 875-884.
  7. Gardner, N.J. (2011), "Verification of punching shear provisions for reinforced concrete flat slabs", ACI Struct. J., 108(5), 572-580.
  8. Kim, J.Y. and Kang, S.M. (2017), "Simulations of short- and longterm deflections of flat plates considering effects of construction sequences", Struct. Eng. Mech., 62(4), 477-485. https://doi.org/10.12989/sem.2017.62.4.477
  9. Kim, K.S., Choi, S.H., Ju, H.J., Lee, D.H., Lee, J.Y. and Shin, M.S. (2014), "Unified equivalent frame method for flat plate slab structures under combined gravity and lateral loads-Part 1: Derivation", Earthq. Struct., 7(5), 719-733. https://doi.org/10.12989/eas.2014.7.5.719
  10. Kmiecik, P. and Kaminski, M. (2011), "Modeling of reinforced concrete structures and composite structures with concrete strength degradation taken into consideration", Arch. Civil Mech. Eng., 11(3), 623-636 https://doi.org/10.1016/S1644-9665(12)60105-8
  11. Lee, J.H. and Fenves, G.L. (1998), "Plastic-damage model for cyclic loading of concrete structures", J. Eng. Mech., ASCE, 124(8), 892-900. https://doi.org/10.1061/(ASCE)0733-9399(1998)124:8(892)
  12. Leet, K. and Bernal, D. (1997), Reinforced Concrete Design, 3th Edition, McGraw-Hill Co.
  13. Lubliner, J., Oliver, J., Oller, S. and Onate, E. (1989), "A plasticdamage model for concrete", Int. J. Solid. Struct., 25(3), 299-326. https://doi.org/10.1016/0020-7683(89)90050-4
  14. MacGregor, J.G. and Wight, J.K. (2006), Reinforced Concrete Mechanics and Design, 4th Edition, Prentice-Hall Inc.
  15. Moehle, J.P. and Diebold, J.W. (1984), "Experimental study of the seismic response of a two-story flat-plate structure", University of California, Berkeley, CA.
  16. Park, Y.M., Han, S.W. and Kee, S.H. (2009), "A modified equivalent frame method for lateral load analysis", Mag. Concrete Res., 61(5), 359-370. https://doi.org/10.1680/macr.2008.00081
  17. Raquib, A. and Fatema, T.Z. (2017), "Numerical study on effect of integrity reinforcement on punching shear of flat plate", Comput. Concrete, 20(6), 731-738. https://doi.org/10.12989/CAC.2017.20.6.731
  18. Ricker, M., Hausler, F. and Randl, N. (2017), "Punching strength of flat plates reinforced with UHPC and double-headed studs", Eng. Struct., 136(1), 345-354. https://doi.org/10.1016/j.engstruct.2017.01.018
  19. Widianto, B.O. and Jirsa, J.O. (2009), "Two-way shear strength of slab-column connections: Reexamination of ACI 318 provisions", ACI Struct. J., 106(2), 160-170.
  20. Youssef, M.A., Meshaly, M.E. and Chowdhury, A.O. (2014), "Lateral stiffness of reinforced concrete interior flat plate connections", Eng. Struct., 62-63, 23-32. https://doi.org/10.1016/j.engstruct.2014.01.027

Cited by

  1. Experimental study of punching shear in post-tensioned slabs with unbonded tendons vol.79, pp.4, 2018, https://doi.org/10.12989/sem.2021.79.4.507