DOI QR코드

DOI QR Code

Seismic response of a high-rise flexible structure under H-V-R ground motion

  • We, Wenhui (Hubei Key Laboratory of Road Bridge and Structure Engineering, Wuhan University of Technology) ;
  • Hu, Ying (Hubei Key Laboratory of Road Bridge and Structure Engineering, Wuhan University of Technology) ;
  • Jiang, Zhihan (Hubei Key Laboratory of Road Bridge and Structure Engineering, Wuhan University of Technology)
  • 투고 : 2019.03.29
  • 심사 : 2022.07.22
  • 발행 : 2022.08.25

초록

To research the dynamic response of the high-rise structure under the rocking ground motion, which we believed that the effect cannot be ignored, especially accompanied by vertical ground motion. Theoretical analysis and shaking table seismic simulation tests were used to study the response of a high-rise structure to excitation of a H-V-R ground motion that included horizontal, vertical, and rocking components. The use of a wavelet analysis filtering technique to extract the rocking component from data for the primary horizontal component in the first part, based on the principle of horizontal pendulum seismogram and the use of a wavelet analysis filtering technique. The dynamic equation of motion for a high-rise structure under H-V-R ground motion was developed in the second part, with extra P-△ effect due to ground rocking displacement was included in the external load excitation terms of the equation of motion, and the influence of the vertical component on the high-rise structure P-△ effect was also included. Shaking table tests were performed for H-V-R ground motion using a scale model of a high-rise TV tower structure in the third part, while the results of the shaking table tests and theoretical calculation were compared in the last part, and the following conclusions were made. The results of the shaking table test were consistent with the theoretical calculation results, which verified the accuracy of the theoretical analysis. The rocking component of ground motion significantly increased the displacement of the structure and caused an asymmetric displacement of the structure. Thus, the seismic design of an engineering structure should consider the additional P-△ effect due to the rocking component. Moreover, introducing the vertical component caused the geometric stiffness of the structure to change with time, and the influence of the rocking component on the structure was amplified due to this effect.

키워드

과제정보

The research described in this paper was financially supported by the Natural Science Foundation of China under Grant No. 51678462, and Sanya Yazhou Bay Science and Technology City Administration Scientific research project (No. SKJC-KJ-2019 KY02).

참고문헌

  1. Acikgoz, S. and Dejong, M.J. (2014), "The rocking response of large flexible structures to earthquakes", Bullet. Earthq. Eng., 12(2), 875-908. https://doi.org/10.1007/s10518-013-9538-0.
  2. Basu, D., Whittaker, A.S. and Constantinou, M.C. (2012), "Estimating Rotational Components of Ground Motion Using Data Recorded at a Single Station", J. Eng. Mech., 138(9), 1141-1156. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000408.
  3. Basu, D., Whittaker, A.S. and Constantinou, M.C. (2013), "Extracting rotational components of earthquake ground motion using data recorded at multiple stations", Earthq. Eng. Struct. Dynam., 42(3), 451-468. https://doi.org/10.1002/eqe.2233.
  4. Basu, D., Whittaker, A.S. and Constantinou, M.C. (2015), "Characterizing rotational components of earthquake ground motion using a surface distribution method and response of sample structures", Eng. Struct., 99, 685-707. https://doi.org/10.1016/j.engstruct.2015.05.029.
  5. Basu, D., Whittaker, A.S. and Constantinou, M.C. (2017), "On the design of a dense array to extract rotational components of earthquake ground motion", Bullet. Earthq. Eng., 15(3), 1-34. https://DOI 10.1007/s10518-016-9992-6.
  6. Bonkowski, P.A., Zembaty, Z. and Minch, M.Y. (2018), "Time history response analysis of a slender tower under translationalrocking seismic excitations", Eng. Struct., 155, 387-393. https://doi.org/10.1016/j.engstruct.2017.11.042.
  7. Bouchon, M. and Aki, K. (1982), "Strain, tilt, and rotation associated with strong ground motion in the vicinity of earthquake faults", Bullet. Seismological Soc. America, 72(5), 1717-1738. https://doi.org/10.1785/BSSA0720051717.
  8. Castellani, A. and Boffi, G. (1986), "Rotational components of the surface ground motion during an earthquake", Earthq. Eng. Struct. Dynam., 14(5), 751-767. https://doi.org/10.1002/eqe.4290140506.
  9. Che, W. and Luo, Q. (2010), "Time-frequency response spectrum of rotational ground motion and its application", Earthq. Sci., 23(1), 71-77. https://doi.org/ 10.1007/s11589-009-0078-2.
  10. Chi, W., Lee, W., Lin, C., Aston, J.A. and Liu, G. (2011), "Inversion of Ground Motion Data from a Seismometer Array for Rotation using a Modification of Jeager's Method", Bullet. Seismological Soc. America, 101(6), 3105-3109. https://doi.org/10.1785/0120100204.
  11. EC8.6 EN 1998-6 (2005), Design of structures for earthquake resistance,Part 6:Towels, masts and chimneys, European Committee for Standardization Management Centre; Brussel, Belgium.
  12. Elnashai, A.S. and Papazoglou, A.J. (1997), "Procedure and spectra for analysis of rc structures subjected to strong vertical earthquake loads", J. Earthq. Eng., 1(1), 121-155. https://doi.org/10.1080/13632469708962364.
  13. Fajardo, K.C.M. and Papageorgiou, A.S. (2018), "Response of tall buildings to base rocking induced by Rayleigh waves", Earthq. Eng. Struct. Dynam., 47(8), 1755-1773. https://doi.org/10.1002/eqe.3040.
  14. Falamarz-Sheikhabadi, M.R. (2014), "Simplified relations for the application of rotational components to seismic design codes", Eng. Struct., 59(2), 141-152. https://doi.org/10.1016/j.engstruct.2013.10.035.
  15. Falamarz-Sheikhabadi, M.R. and Ghafory-Ashtiany, M. (2012), "Approximate formulas for rotational effects in earthquake engineering", J. Seismology, 16(4), 815-827. https://doi.org/10.1007/s10950-012-9273-z.
  16. Falamarz-Sheikhabadi, M.R. and Ghafory-Ashtiany, M. (2015), "Rotational components in structural loading", Soil Dynam. Earthq. Eng., 75, 220-233. https://doi.org/10.1016/j.soildyn.2015.04.012.
  17. GB 50011-2010 (2016), Code of Seismic Design of Buildings (2016 Edition), China Building Industry Press, Beijing, China.
  18. Graizer, V. (2006), "Tilts in strong ground motion", Bullet. Seismological Soc. America, 96(6), 2090-2102. https://doi.org/10.1785/0120060065.
  19. Graizer, V. (2009), "Review Article: tutorial on measuring rotations using multipendulum systems", Bullet. Seismological Soc. America, 99(2B), 1064-1072. https://doi.org/10.1785/0120080145.
  20. Graizer, V. and Kalkan, E. (2008), "Response of pendulums to complex input ground motion", Soil Dynam. Earthq. Eng., 28(8), 621-631. https://doi.org/10.1016/j.soildyn.2007.09.003.
  21. Graizer, V. and Kalkan, E. (2009), "Prediction of spectral acceleration response ordinates based on PGA attenuation", Earthq. Spectra, 25(1), 39-69. https://doi.org/10.1193/1.3043904.
  22. Hongnan, L. and Qianxin, W. (1991), "Response analysis of the system consisting of long span transmission lines and their supporting towers to horizontal and rocking seismic motions", Eng. Mech., 8(4), 68-79.
  23. Kalkan, E. and Graizer, V. (2007), "Coupled tilt and translational ground motion response spectra", J. Struct. Eng., 133(5), 609-619. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:5(609).
  24. Lee, V.W. and Trifunac, M.D. (1985), "Torsional accelerograms", J. Soil Dynam. Earthq. Eng., 4(3), 132-139. https://doi.org/10.1016/0261-7277(85)90007-5.
  25. Li, H., Suarez, L.E. and Singh, M.P. (1997), "Rotational components of earthquake ground motions", Earthq. Eng. Eng. Vib., 17, 37-50.
  26. Li, H.N., Sun, L.Y. and Wang, S.Y. (2004), "Improved approach for obtaining rotational components of seismic motion", Nuclear Eng. Design, 232(2), 131-137. https://doi.org/10.1016/j.nucengdes.2004.05.002.
  27. Nazarov, Y.P., Poznyak, E. and Filimonov, A.V. (2015), "A brief theory and computing of seismic ground rotations for structural analyses", Soil Dynam. Earthq. Eng., 71, 31-41. https://doi.org/10.1016/j.soildyn.2015.01.013.
  28. Nazarov, Y.P. and Poznyak, E.V. (2016), "Estimate of Rotational Components of Seismic Ground Motion", Soil Mech. Foundation Eng., 52(6), 355-360. https://doi.org/10.1007/s11204-016-9353-0.
  29. Newmark, N.M. (1969), "Torsion in symmetrical buildings", Proceedings of Fourth World Conference on Earthquake Engineering, Santiago, January.
  30. Rodda, G.K. and Basu, D. (2018), "Coherency model for translational and rotational ground motions", Bullet. Earthq. Eng., 16(7), 2687-2710. https://doi.org/10.1007/s10518-017-0304-6.
  31. Rutenberg, A. and Heidebrecht, A.C. (1985), "Rotational ground motion and seismic codes", Canadian J. Civil Eng., 12(3), 583-592. https://doi.org/10.1139/L85-066.
  32. Sarokolayi, L.K., Neya, B.N. and Amiri, J.V. (2015), "Nonlinear dynamic analysis of concrete gravity dams considering rotational component of ground motion", J. Civil Eng., 13(1), 16-29. https://doi.org/10.22068/IJCE.13.1.16.
  33. Teisseyre, R. (1973), "Earthquake processes in a micromorphic continuum", Pure Appl. Geophys., 102(1), 15-28. https://doi.org/10.1007/BF00876588.
  34. Tiejian, L., Fang, L. and Zhiwu, Y. (2006), "Random response of high-layer structures in combined action of horizontal and rocking ground motions", J. Central South University, 37(3), 623-627. https://doi.org/10.13197/j.eeev.2021.06.33.zhaojg.004.
  35. Xiaobo, P. and Xiaojun, L. (2012), "Study of ground surface tilts from strong motion records of the Wenchuan earthquake", J. Seismology, 34(1), 64-75.
  36. Yin, J., Nigbor, R.L., Chen, Q. and Steidl, J. (2016), "Engineering analysis of measured rotational ground motions at GVDA", Soil Dynam. Earthq. Eng., 87, 125-137. https://doi.org/10.1016/j.soildyn.2016.05.007.
  37. WeiWenhui, XueGuangwen, Zhang Di. (2015), "Rotational components of ground motion based on wavelet analysis", Chinese J. Geotechnical Eng., 37(7), 1241-1248. https://doi.org/10.11779/CJGE201507010.
  38. Zembaty, Z. (2009), "Tutorial on surface rotations from wave passage effects: stochastic spectral approach", Bullet. Seismological Soc. America, 99(2B), 1040-1049. https://doi.org/10.1785/0120080102.