Structural Engineering and Mechanics

  • 제59권4호
  • /
  • Pages.653-669
  • /
  • 2016
  • /
  • 1225-4568(pISSN)
  • /
  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Influence of concurrent horizontal and vertical ground excitations on the collapse margins of non-ductile RC frame buildings

  • Farsangi, E. Noroozinejad (SERC, International Institute of Earthquake Engineering and Seismology) ;
  • Yang, T.Y. (International Joint Research Laboratory of Earthquake Engineering) ;
  • Tasnimi, A.A. (Department of Civil and Environmental Engineering, Tarbiat Modares University)
  • 투고 : 2016.01.13
  • 심사 : 2016.06.10
  • 발행 : 2016.08.25
⟨ 이전 논문 다음 논문 ⟩

초록

Recent earthquakes worldwide show that a significant portion of the earthquake shaking happens in the vertical direction. This phenomenon has raised significant interests to consider the vertical ground motion during the seismic design and assessment of the structures. Strong vertical ground motions can alter the axial forces in the columns, which might affect the shear capacity of reinforced concrete (RC) members. This is particularly important for non-ductile RC frames, which are very vulnerable to earthquake-induced collapse. This paper presents the detailed nonlinear dynamic analysis to quantify the collapse risk of non-ductile RC frame structures with varying heights. An array of non-ductile RC frame architype buildings located in Los Angeles, California were designed according to the 1967 uniform building code. The seismic responses of the architype buildings subjected to concurrent horizontal and vertical ground motions were analyzed. A comprehensive array of ground motions was selected from the PEER NGA-WEST2 and Iran Strong Motions Network database. Detailed nonlinear dynamic analyses were performed to quantify the collapse fragility curves and collapse margin ratios (CMRs) of the architype buildings. The results show that the vertical ground motions have significant impact on both the local and global responses of non-ductile RC moment frames. Hence, it is crucial to include the combined vertical and horizontal shaking during the seismic design and assessment of non-ductile RC moment frames.

키워드

참고문헌

  1. Anagnos, T., Comerio, M.C., Goulet, C., Na, H., Steele, J. and Stewart, J.P. (2008), "Los Angeles inventory of non-ductile concrete buildings for analysis of seismic collapse risk hazards", Proc. 14th World Conf. Earthquake Eng., 12-17.
  2. Ancheta, T.D., Darragh, R.B., Stewart, J.P., Seyhan, E., Silva, W.J., Chiou, B.S.J., ... & Donahue, J.L. (2013), "PEER NGA-West2 Database", PEER Report, 3, 83.
  3. ASCE (2010), "Minimum design loads for buildings and other structures, ASCE Standard ASCE/SEI 7-10", American Society of Civil Engineers: Reston, Virginia.
  4. Bommer, J., Bray, J.D., Pitilakis, K. and Yasuda, S. (2005), Geotechnical, geological and earthquake engineering, Springer.
  5. Bozorgnia, Y. and Campbell, K.W. (2004), "The vertical-to-horizontal response spectral ratio and tentative procedures for developing simplified V/H and vertical design spectra", J. Earthq. Eng., 8, 175-207.
  6. Clyde, C., Pantelides, C.P. and Reaveley, L.D. (2000), "Performance-based evaluation of exterior reinforced concrete building joints for seismic excitation", PEER Report 2000/05, Pacific Earthquake Engineering Center, University of California, Berkeley, CA.
  7. Code, UBC (1967), Edition, Vol. I, In International Conference of Building Officials, Pasadena, California.
  8. Collier, C.J. and Elnashai, A.S. (2001), "A procedure for combining vertical and horizontal seismic action effects", J. Earthq. Eng., 5(4), 521-539. https://doi.org/10.1080/13632460109350404
  9. Cornell, A., Zareian, F., Krawinkler, H. and Miranda, E. (2005), "Prediction of probability of collapse, van Nuys hotel building testbed report: exercising seismic performance assessment", Pacific Earthq. Eng. Res., 11, 85-93.
  10. Elwood, K.J. (2004), "Modelling failures in existing reinforced concrete columns", Can. J. Civil Eng., 31(5), 846-859. https://doi.org/10.1139/l04-040
  11. Eskandari, R. and Vafaei, D. (2015), "Effects of near-fault records characteristics on seismic performance of eccentrically braced frame", Struct. Eng. Mech., 56(5), 855-870. https://doi.org/10.12989/sem.2015.56.5.855
  12. Galal, K. (2007), "Lateral force-displacement ductility relationship of non-ductile squat RC columns rehabilitated using FRP confinement", Struct. Eng. Mech., 25(1), 75-89. https://doi.org/10.12989/sem.2007.25.1.075
  13. Hakuto, S., Park, R. and Tanaka, H. (2000), "Seismic load tests on interior and exterior beam-column joints with substandard reinforcing details", ACI Struct. J., 97(1), 11-25.
  14. Haselton, C., Liel, A., Taylor Lange, S. and Deierlein, G.G. (2008), "Beam-Column element model calibrated for predicting flexural response leading to global collapse of RC frame buildings", PEER Rep. 2007/03, Pacific Earthquake Engineering Research Center (PEER), Univ. of California at Berkeley, Berkeley, CA.
  15. Ibarra, L.F., Medina, R.A. and Krawinkler, H. (2005), "Hysteretic models that incorporate strength and stiffness deterioration", Earthq. Eng. Struct. Dyn., 34(11), 1489-1511. https://doi.org/10.1002/eqe.495
  16. Iranian Building and Housing Research Center website, www.bhrc.ac.ir
  17. Liel, A.B. and Deierlein, G.G. (2008), "Assessing the collapse risk of California's existing reinforced concrete frame structures: metrics for seismic safety decisions", Blume Earthquake Engineering Center, No. 166, Stanford University.
  18. Liel, A.B., Haselton, C.B. and Deierlein, G.G. (2011), "Seismic collapse safety of reinforced concrete buildings: ii. comparative assessment of non-ductile and ductile moment frames", J. Struct. Eng., 137(4), 492-502. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000275
  19. McKenna, F. (2014), "Open system for earthquake engineering simulation (OpenSees)", Version 2.4. 4 MP.
  20. Papazoglou, A.J. and Elnashai, A.S. (1996), "Analytical and field evidence of the damaging effect of vertical earthquake ground motion", Earthq. Eng. Struct. Dyn., 25, 1109-1137. https://doi.org/10.1002/(SICI)1096-9845(199610)25:10<1109::AID-EQE604>3.0.CO;2-0
  21. Prager, F., Tucker, J. and Sneberger, L.P. (2009), "The policy problem of non-ductile concrete buildings in Los Angeles: Costly earthquakes, uncertain owners", ASCE/SEI Conference on Improving the Seismic Performance of Existing Buildings and Others Structures.
  22. Priestley, M.J.N., Benzoti, G., Ohtaki, T. and Seible, F. (1996), "Seismic performance of circular reinforced concrete columns under varying axial load", Report-SSRP-96/04, Division of Structural Engineering, University of California, San Diego, CA.
  23. United States Geological Survey website, www.usgs.gov
  24. Wen, Y.K., Ellingwood, B.R. and Bracci, J.M. (2004), "Vulnerability functions", Technical Rep., DS-4, Mid-America Earthquake Center, Univ. of Illinois at Urbana-Champaign.
  25. Zhang, B., Yang, Y., Wei, Y.F., Liu, R.Y., Ding, C. and Zhang, K.Q. (2015), "Experimental study on seismic behavior of reinforced concrete column retrofitted with prestressed steel strips", Struct. Eng. Mech., 55(6), 1139-1155. https://doi.org/10.12989/sem.2015.55.6.1139

피인용 문헌

  1. Performance Assessment of Steel Moment Connections Retrofitted with Various Reduced Section Patterns vol.29, pp.4, 2016, https://doi.org/10.2478/ceer-2019-0041
  2. Risk-Based Evaluation of Economic Feasibility for Strengthening of Low-Code RC Structures vol.26, pp.1, 2021, https://doi.org/10.1061/(asce)sc.1943-5576.0000543
  3. Vibration Control of a Tall Benchmark Building under Wind and Earthquake Excitation vol.26, pp.2, 2016, https://doi.org/10.1061/(asce)sc.1943-5576.0000569
  4. The effect of vertical near-field ground motions on the collapse risk of high-rise reinforced concrete frame-core wall structures vol.25, pp.2, 2022, https://doi.org/10.1177/13694332211056106