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Comparison of behavior of high-rise residential buildings with and without post-tensioned transfer plate system

  • Byeonguk Ahn (Department of Architecture and Architectural Engineering, Seoul National University) ;
  • Fahimeh Yavartanoo (Department of Landscape Architecture and Rural Systems Engineering, Seoul National University) ;
  • Jang-Keun Yoon (DL E&C) ;
  • Su-Min Kang (School of Architecture, Soongsil University) ;
  • Seungjun Kim (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Thomas H.-K. Kang (Department of Architecture and Architectural Engineering, Seoul National University)
  • Received : 2022.12.31
  • Accepted : 2023.02.08
  • Published : 2023.04.25

Abstract

Shear wall is commonly used as a lateral force resisting system of concrete mid-rise and high-rise buildings, but it brings challenges in providing relatively large space throughout the building height. For this reason, the structure system where the upper structure with bearing, non-bearing and/or shear walls that sits on top of a transfer plate system supported by widely spaced columns at the lower stories is preferred in some regions, particularly in low to moderate seismic regions in Asia. A thick reinforced concrete (RC) plate has often been used as a transfer system, along with RC transfer girders; however, the RC plate becomes very thick for tall buildings. Applying the post-tensioning (PT) technique to RC plates can effectively reduce the thickness and reinforcement as an economical design method. Currently, a simplified model is used for numerical modeling of PT transfer plate, which does not consider the interaction of the plate and the upper structure. To observe the actual behavior of PT transfer plate under seismic loads, it is necessary to model whole parts of the structure and tendons to precisely include the interaction and the secondary effect of PT tendons in the results. This research evaluated the seismic behavior of shear wall-type residential buildings with PT transfer plates for the condition that PT tendons are included or excluded in the modeling. Three-dimensional finite element models were developed, which includes prestressing tendon elements, and response spectrum analyses were carried out to evaluate seismic forces. Two buildings with flat-shape and L-shape plans were considered, and design forces of shear walls and transfer columns for a system with and without PT tendons were compared. The results showed that, in some cases, excluding PT tendons from the model leads to an unrealistic estimation of the demands for shear walls sit on transfer plate and transfer columns due to excluding the secondary effect of PT tendons. Based on the results, generally, the secondary effect reduces shear force demand and axial-flexural demands of transfer columns but increases the shear force demand of shear walls. The results of this study suggested that, in addition to the effect of PT on the resistance of transfer plate, it is necessary to include PT tendons in the modeling to consider its effect on force demand.

Keywords

Acknowledgement

This research was funded by National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1A5A1032433).

References

  1. ACI 318-19 (2019), Building Code Requirements for Structural Concrete, American Concrete Institute (ACI), Farmington Hills, MI, USA.
  2. Ahn, B., Kang, T.H.K., Kang, S.M. and Yoon, J.K. (2020), "Punching shear stress in post-tensioned transfer plate of multistory buildings", Appl. Sci., 10(17), 6015. https://doi.org/10.3390/app10176015.
  3. ASCE 41-17 (2017), Seismic Evaluation and Retrofit of Existing Buildings, American Society of Civil Engineers (ASCE), Reston, VA, USA.
  4. ASCE 7-16 (2017), Minimum Design Loads for Buildings and Other Structures, American Society of Civil Engineers (ASCE), Reston, VA, USA.
  5. Jeong, S.Y., Kang, T.H.K., Yoon, J.K. and Klemencic, R. (2020), "Seismic performance evaluation of a tall building: Practical modeling of surrounding basement structures", J. Build. Eng., 31, 101420. https://doi.org/10.1016/j.jobe.2020.101420.
  6. Kang, T.H.K. and Wallace, J.W. (2008), "Seismic performance of reinforced concrete slab-column connections with thin plate stirrups", ACI Struct. J., 105(5), 617-625. https://doi.org/10.14359/19945.
  7. Kang, T.H.K., Wallace, J.W. and Elwood, K. (2009), "Nonlinear modeling of flat-plate systems", J. Struct. Eng., 135(2), 147-158. https://doi.org/10.1061/(ASCE)0733-9445(2009)135:2(147).
  8. KBC 2016 (2016), Korea Building Code 2016, Architecture Institute of Korea, Seoul, Korea.
  9. KDS 14 20 10 (2019), Analysis and Design Principles for Concrete Structure, Korea Construction Standards Center, Seoul, Korea.
  10. Kim, H.A., Chung, S.J., Shin, K.J., Song, J.G., Chung, H.K. and Chung, H.S. (1998), "Modeling method of column-supported wall system subjected to vertical loading", J. Arch. Inst. Korea Struct. Constr., 14, 37-44.
  11. Kim, Y.C. and Lee, J.J. (2005), "Investigation of the structural modeling of transfer floor in column-supported wall structure", J. Korean Soc. Saf., 20, 79-83.
  12. Ko, D.W. and Lee, H.S. (2009), "Experimental verification of design approaches of RC transfer girders topped by partially filled shear walls", J. Arch. Inst. Korea Struct. Constr., 25(4), 61-68.
  13. Kuang, J.S. and Puvvala, J. (1996), "Continuous transfer beams supporting in-plane loaded shear walls in tall buildings", Struct. Des. Tall Build., 5, 281-293. https://doi.org/10.1002/(SICI)1099-1794(199612)5:4%3C281::AID-TAL79%3E3.0.CO;2-P.
  14. Kuang, J.S. and Zhang, Z. (2003), "Analysis and behavior of transfer plate-shear wall systems in tall buildings", Struct. Des. Tall Spec. Build., 12(5), 409-421. https://doi.org/10.1002/tal.236.
  15. Lee, D.H. and Kim, H.S. (2003), "A study on the analysis method of transfer girder of column-supported wall system", J. Arch. Inst. Korea Struct. Constr., 19, 37-44.
  16. Li, C.S., Lam, S.S., Chen, A. and Wong, Y.L. (2008), "Seismic performance of a transfer plate structure", J. Struct. Eng., 134, 1705-1716. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:11(1705).
  17. Li, C.S., Lam, S.S., Zhang, M.Z. and Wong, Y.L. (2006), "Shaking table test of a 1:20 scale high-rise building with a transfer plate system", J. Struct. Eng., 132(11), 1732-1744. https://doi.org/10.1061/(ASCE)0733-9445(2006)132:11(1732).
  18. Li, J., Su, R.K. and Chandler, A. (2003), "Assessment of low-rise building with transfer beam under seismic forces", Eng. Struct., 25(12), 1537-1549. https://doi.org/10.1016/S0141-0296(03)00121-4.
  19. Su, R.K., Chandler, A., Li, J. and Lam, N. (2002), "Seismic assessment of transfer plate high rise buildings", Struct. Eng. Mech., 14(3), 287-306. https://doi.org/10.12989/sem.2002.14.3.287.
  20. Su, R.K.L. and Cheng, M.H. (2009), "Earthquake-induced shear concentration in shear walls above transfer structures", Struct. Des. Tall Spec. Build., 18(6), 657-671. https://doi.org/10.1002/tal.458.
  21. Szilard, R. (2004), "Theories and applications of plate analysis: Classical, numerical and engineering methods", Appl. Mech. Rev., 57(6), B32-B33. https://doi.org/10.1115/1.1849174.
  22. Wu, M., Qian, J., Fang, X. and Yan, W. (2007), "Experimental and analytical studies on tall buildings with a high-level transfer story", Struct. Des. Tall Spec. Build., 16(3), 301-319. https://doi.org/10.1002/tal.317.
  23. Yoon, J.K., Kang, S.M., Kim, O.J. and Lee, D.B. (2008), "A study on the behavior and practical design method for transfer slab used in shear wall type apartment with piloti under pit level", J. Arch. Inst. Korea, 28(1), 231-234.
  24. Yoon, J.K., Kang, S.M., Kim, O.J., Lee, D.B. and Lee, W.B. (2010), "Structural design method and tendon layout of post-tension transfer slab", Proc. Aut. Annu. Conf. Archit. Inst. Korea, 30, 81-82.