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Pseudo 3D FEM analysis for wave passage effect on the response spectrum of a building built on soft soil layer

  • Kim, Yong-Seok (Department of Architectural Engineering, Mokpo National University)
  • Received : 2013.05.16
  • Accepted : 2014.11.06
  • Published : 2015.05.25

Abstract

Spatially variable ground motions can be significant on the seismic response of a structure due to the incoherency of the incident wave. Incoherence of the incident wave is resulted from wave passage and wave scattering. In this study, wave passage effect on the response spectrum of a building structure built on a soft soil layer was investigated utilizing a finite element program of P3DASS (Pseudo 3-dimensional Dynamic Analysis of a Structure-soil System). P3DASS was developed for the axisymmetric problem in the cylindrical coordinate, but it is modified to apply anti-symmetric input earthquake motions. Study results were compared with the experimental results to verify the reliability of P3DASS program for the shear wave velocity of 250 m/s and the apparent shear wave velocities of 2000-3500 m/s. Studied transfer functions of input motions between surface mat foundation and free ground surface were well-agreed to the experimental ones with a small difference in all frequency ranges, showing some reductions of the transfer function in the high frequency range. Also wave passage effect on the elastic response spectrum reduced the elastic seismic response of a SDOF system somewhat in the short period range.

References

  1. Abrahamson, N.A. (1992), "Generation of spatially incoherent strong motion time histories", Proceedings of the 10th World Conference Earthquake Engneering.
  2. Ancheta, T.D. (2010), Engineering Characterization of Spatially Variable Earthquake Ground Motions, Ph.D. dissertation of University of California, Los Angeles.
  3. Ancheta, T.D., Stewart, J.P. and Abrahamson, N.A. (2011), "Engineering characterization of earthquake ground motion coherency and amplitude variability", Proceeding of the 4th International Symposium on Effects of Surface Geology on Seismic Motion, IASPEI/IAEE, August 23-26, University of California, Santa Barbara.
  4. Ates, S., Soyluk, K., Dumanoglu, A.A. and Bayraktar, A. (2009), "Earthquake response of isolated cablestayed bridges under spatially varying ground motions", Struct. Eng. Mech., 31(6), 639-662. https://doi.org/10.12989/sem.2009.31.6.639
  5. Clough, R.W. and Penzien, J. (1975), Dynamics of Structures, McGraw-Hill, New York.
  6. Hashash, Y.M.A., Park D. and Yao J.I. (2005), "Ovaling deformations of circular tunnels under seismic loading, an update on seismic design and analysis of underground structures", Tunnel. Underground Space Technol., 20(5), 435-441. https://doi.org/10.1016/j.tust.2005.02.004
  7. International Building Code (IBC) Council (2009), 2009 International building code (IBC2009), 340-366.
  8. Kausel, E. (1974), Forced Vibrations of Circular Foundations on Layered Media, Research Report R74-11, Department of Civil Engineering, MIT.
  9. Kim, Yong-Seok (2012), "Effect of poorly-compacted backfill around embedded foundations on building seismic response", Earthq. Struct., 3(3-4), 549-561. https://doi.org/10.12989/eas.2012.3.3_4.549
  10. Kim, Yong-Seok and Roesset, Jose M. (2004), "Effect of nonlinear soil behavior on the inelastic seismic response of a structure", Int. J. Geomech., ASCE, 4(2), 104-114. https://doi.org/10.1061/(ASCE)1532-3641(2004)4:2(104)
  11. Lee, Jin Ho, Kim, Jae Kwan and Tassoulas, John L. (2012), "Dynamic analysis of foundations in a layered half-space using a consistent transmitting boundary", Earthq. Struct., 3(3-4), 203-230. https://doi.org/10.12989/eas.2012.3.3_4.203
  12. Luco, J.E. (1976), "Torsional response of structure to obliquely incident seismic SH waves", Int. J. Earthq. Eng. Struct. Dyn., 4(3), 207-219. https://doi.org/10.1002/eqe.4290040302
  13. Luco, J.E. and Sotiropoulos, D.A. (1980), "Local characterization of free-field ground motion and effects of wave passage", Bull. Seismol. Soc. AM., 70(6), 2229-2244.
  14. Luco, J.E. and Wong, H.L. (1986), "Response of a rigid foundation to a spatially random ground motion", Earthq. Eng. Struct. Dyn., 14(6), 891-908. https://doi.org/10.1002/eqe.4290140606
  15. Lupoi, A., Franchin, P., Pinto, P.E. and Monti, G. (2005), "Seismic design of bridges accounting for spatial variability of ground motion", Earthq. Eng. Struct. Dyn., 34(4-5), 327-348. https://doi.org/10.1002/eqe.444
  16. Mylonakis, G., Nikolaou, S. and Gazetas, G. (2006), "Footings under seismic loading: Analysis and design issues with emphasis on bridge foundations", Soil Dyn. Earthq. Eng., 26(9), 824-853. https://doi.org/10.1016/j.soildyn.2005.12.005
  17. Ohsaki, Makoto (2001), "Sensitivity of optimum design for spatially varying ground motions", J. Struct. Eng., ASCE, 127(11), 1324-1329. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:11(1324)
  18. O'Rourke, M.J. and Liu, X. (1997), "Behavior of continuous pipeline subject to transverse PGD", Earthq. Eng. Struct. Dyn., 26(10), 989-1003. https://doi.org/10.1002/(SICI)1096-9845(199710)26:10<989::AID-EQE688>3.0.CO;2-P
  19. PEER Strong Earthquake Data Base, http://peer.berkeley.edu/smcat/search.html/.
  20. Roesset, Jose M. and Kim, Yong-Seok (1987), "Specification of control motions for embedded foundations", Proceeding of the 5th Canadian Earthquake Engineering Conference, Ottawa, Canada.
  21. Tsai, C.C. and Hashash, Y.M.A. (2010), "Evaluation of two approaches to simulate spatially variable ground motions", J. Earthq. Eng., 14(2), 293-308. https://doi.org/10.1080/13632460802421318
  22. Zerva, A. (2009), Spatial Variation of Seismic Ground Motions: Modeling and Engineering Applications, CRC Press, Florida.

Cited by

  1. Effectiveness of Soil–Structure Interaction and Dynamic Characteristics on Cable-Stayed Bridges Subjected to Multiple Support Excitation vol.18, pp.2, 2018, https://doi.org/10.1007/s13296-018-0069-z