Earthquakes and Structures

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Verification of diaphragm seismic design factors for precast concrete office buildings

  • Zhang, Dichuan (School of Engineering and Digital Sciences, Narzarbayev University) ;
  • Fleischman, Robert B. (Department of Civil Engineering and Engineering Mechanics, University of Arizona) ;
  • Lee, Deuckhang (Department of Architectural Engineering, Chungbuk National University)
  • Received : 2020.03.25
  • Accepted : 2020.06.10
  • Published : 2021.01.25
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Abstract

A new seismic design methodology has been developed for precast concrete diaphragms. Seismic design factors were used to be applied on top of diaphragm seismic design forces in the current code. These factors, established through extensive parametric studies, align diaphragm design strengths with different seismic performance targets. A simplified evaluation structure with a single-bay plan was used in the parametric studies. This simplified evaluation structure is reasonable and cost-effective as it can comprehensively cover structural geometries and design parameters. However, further verification and investigation are required to apply these design factors to prototype structures with realistic layouts. This paper presents diaphragm design of several precast concrete office buildings using the new design methodology. The applicability of the design factor to the office building was evaluated and verified through nonlinear time history analyses. The seismic behavior and performance of the diaphragm were investigated for the precast concrete office buildings. It was found that the design factor established for the new design methodology is applicable to the realistic precast concrete office buildings.

Keywords

Acknowledgement

This research was supported by the Nazarbayev University Research Grant 021220FD2151, Precast/Prestressed Concrete Institute, the Charles Pankow Foundation, the National Science Foundation under Grant CMS-0324522/CMMI-0623952, and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1F1A1048422). The authors are grateful for this support. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the Nazarbayev University, National Science Foundation or Korea government.

References

  1. ACI 318-14 (2014), Building Code Requirements for Structural Concrete and Commentary, ACI committee 318.
  2. ASCE 7-10. (2010), Minimum Design Loads for Buildings and Other Structures. American Society of Civil Engineers.
  3. ASCE 7-16 (2016), ASCE Minimum Design Loads and Associated Criteria for Buildings and Other Structures. American Society of Civil Engineers.
  4. Building Seismic Safety Council, Committee IT6. (2014), Precast Concrete Diaphragm Design. Proposal IT06-002 - Revise ASCE/SEI 7-10 Sections 14.2.4, NEHRP.
  5. Bournas, D.A., Negro, P. and Molina, F.J. (2013), "Pseudodynamic tests on a full-scale 3-storey precast concrete building: behavior of the mechanical connections and floor diaphragms", Eng. Struct., 57, 609-627. http://doi.org/10.1016/j.engstruct.2013.05.046.
  6. Belleri, A., Moaveni, B. and Restrepo, J.I. (2014), "Damage assessment through structural identification of a three-story large-scale precast concrete structure", Earthq. Eng. Struct. Dyn., 43(1), 61-76. http://doi.org/10.1002/eqe.2332.
  7. Belleri, A., Torquati, M., Riva, P. and Nascimbene, R. (2015), "Vulnerability assessment and retrofit solutions of precast industrial structures", Earthq. Struct., 8(3), 801-820. http://doi.org/10.12989/eas.2015.8.3.801.
  8. DSDM Project Task Group (2014), "Seismic design methodology document for precast concrete diaphragms, Project 08-07 Research Product, Charles Pankow Foundation.
  9. Fleischman R.B. and Farrow K.T. (2001), "Dynamic response of perimeter lateral-system structures with flexible diaphragms", Earthq. Eng. Struct. Dyn., 30(5), 745-763. http://doi.org/10.1002/eqe.36.
  10. Fleischman, R.B., Naito C.J., Restrepo J., Sause R., Ghosh S.K., Wan G., Schoettler M. and Cao L. (2005), "Seismic design methodology for precast concrete diaphragms, Part 2: research program", PCI J., 51(6), 2-19. http://doi.org/10.15554/pcij.11012005.14.31
  11. Fleischman, R.B., Restrepo, J.I, Naito, C.J., Sause, R., Zhang, D. and Schoettler, M. (2013), "Integrated analytical and experimental research to develop a new seismic design methodology for precast concrete diaphragms.", ASCE J. Struct. Eng. NEES: Advan. Earthq. Eng., V139(7). http://doi.org/10.1061/(ASCE)ST.1943-541X.0000734.
  12. Ghosh, S.K., Cleland, N.M. and Naito, C.J. (2017), "Seismic design of precast concrete diaphragms", NEHRP Seismic Des. Tech. Brief, 13. http://doi.org/10.6028/NIST.GCR.17-917-47.
  13. Iverson, J.K. and Hawkins, N.M. (1994), "Performance of precast/prestressed concrete building structures during northridge earthquake", PCI J., 39 (2), 38-55. http://doi.org/10.15554/pcij.03011994.38.55.
  14. Lee, H.J. and Kuchma, D.A. (2008), "Seismic response of parking structures with precast concrete diaphragms", PCI J., 53(2), 71-94. http://doi.org/10.15554/pcij.03012008.71.94.
  15. Negro, P., Bournas, D.A. and Molina, F.J. (2013), "Pseudodynamic tests on a full-scale 3-storey precast concrete building: Global response", Eng. Struct., 57, 594-608. http://doi.org/10.1016/j.engstruct.2013.05.046.
  16. Naito, C. and Ren, R. (2013), "An evaluation method for precast concrete diaphragm connectors based on structural testing", PCI J., 58(2), 106-118. http://doi.org/10.15554/pcij.03012013.106.118.
  17. Oliva, M.G. (2000), Testing of the JVI Flange Connector for Precast Concrete Double-Tee Systems. Structures and Materials Test Laboratory, College of Engineering, University of Wisconsin, Madison, WI.
  18. Ren, R. and Naito, C. (2013), "Precast concrete diaphragm connector performance database", ASCE J. Struct. Eng., 139(1), 15-27. http://doi.org/10.1061/(ASCE)ST.1943-541X.0000598.
  19. Rodriguez, M., Restrepo, J.I. and Carr, A.J. (2002), "Earthquake induced floor horizontal accelerations in buildings", Earthq. Eng. Struct. Dyn., 31(3), 693-718. http://doi.org/10.1002/eqe.149.
  20. Shaikh, A.F. and Feile, E.P. (2004), "Load testing of a precast concrete double-tee flange connector", PCI J., 49(3), 84-95. http://doi.org/10.15554/pcij.05012004.84.94.
  21. Wan, G., Fleischman, R.B. and Zhang, D. (2012), "Effect of spandrel beam to double tee connection characteristic of flexure-controlled precast diaphragms", ASCE J. Struct. Eng., 138(2), 247-258. http://doi.org/10.1061/(ASCE)ST.1943-541X.0000426.
  22. Wan, G., Zhang, D., Fleischman, R.B. and Naito, C.J. (2015), "A coupled connector element for nonlinear static pushover analysis of precast concrete diaphragms.", Eng. Struct., 86(1), 58-71. http://doi.org/10.1016/j.engstruct.2014.12.029.
  23. Wood, S.L., Stanton, J.F. and Hawkins, N.M. (2000), "New seismic design provisions for diaphragms in precast concrete parking structures", PCI J., 45(1), 50-65. http://doi.org/10.15554/pcij.01012000.50.65.
  24. Zhang, D. and Fleischman, R.B. (2016), "Establishment of performance-based seismic design factors for precast concrete floor diaphragms", Earthq. Eng. Struct. Dyn., 45, 675-698. http://doi.org/10.1002/eqe.2679.
  25. Zhang, D., Fleischman, R.B., Naito, C., and Ren, R. (2011), "Experimental evaluation of pretopped precast diaphragm critical flexure joint under seismic demands", ASCE J. Struct. Eng., 137(10), 1063-1074. http://doi.org/10.1061/(ASCE)ST.1943-541X.0000352.
  26. Zhang, D., Fleischman, R.B., Naito C.J. and Zhang, Z. (2016), "Development of diaphragm connector elements for threedimensional nonlinear dynamic analysis of precast concrete structures", Advan. Struct. Eng., 19(2), 187-202. http://doi.org/10.1177/1369433215624319.
  27. Zhang, D., Fleischman, R.B., Schoettler, M.J., Restrepo, J.I. and Mielke, M. (2019), "Precast diaphragm response in a half-scale shake table test.", ASCE J. Struct. Eng., 145(5). http://doi.org/10.1061/(ASCE)ST.1943-541X.0002304.
  28. Zhang, D. and Fleischman, R.B. (2019), "Verification of diaphragm seismic design factors for precast concrete parking structures", Struct. Eng. Mech., 71(6), 643-656. http://doi.org/10.12989/sem.2019.71.6.643.
  29. Zhang, D., Fleischman, R.B. and Lee, D. (2020), "Effects of diaphragm flexibility on the seismic design acceleration of precast concrete diaphragms", Comput. Concrete, 25(3), 273-282. http://doi.org/10.12989/cac.2020.25.3.273.