Structural Engineering and Mechanics

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The effect of impact with adjacent structure on seismic behavior of base-isolated buildings with DCFP bearings

  • Received : 2013.10.09
  • Accepted : 2014.05.09
  • Published : 2014.07.25
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Abstract

Since the isolation bearings undergo large displacements in base-isolated structures, impact with adjacent structures is inevitable. Therefore, in this investigation, the effect of impact on seismic response of isolated structures mounted on double concave friction pendulum (DCFP) bearings subjected to near field ground motions is considered. A non-linear viscoelastic model of collision is used to simulate structural pounding more accurately. 2-, 4- and 8-story base-isolated buildings adjacent to fixed-base structures are modeled and the coupled differential equations of motion related to these isolated systems are solved in the MATLAB environment using the SIMULINK toolbox. The variation of seismic responses such as base shear, displacement in the isolation system and superstructure (top floor) is computed to study the impact condition. Also, the effects of variation of system parameters: isolation period, superstructure period, size of seismic gap between two structures, radius of curvature of the sliding surface and friction coefficient of isolator are contemplated in this study. It is concluded that the normalized base shear, bearing and top floor displacement increase due to impact with adjacent structure. When the distance between two structures decreases, the base shear and displacement increase comparing to no impact condition. Besides, the increase in friction coefficient difference also causes the normalized base shear and displacement in isolation system and superstructure increase in comparison with bi-linear hysteretic behavior of base isolation system. Totally, the comparison of results indicates that the changes in values of friction coefficient have more significant effects on 2-story building than 4- and 8-story buildings.

Keywords

References

  1. Agarwal, V.K., Neidzweeki, J.M. and Van de lindt, J.W. (2007), "Earthquake induced pounding in friction varying base isolated buildings", Eng. Struct., 29(11), 2825-32. https://doi.org/10.1016/j.engstruct.2007.01.026
  2. Almazan, J.L., De la llera, J.C. and Inaudi, J.A. (1998), "Modeling aspects of structures isolated with the frictional pendulum system", Earthq. Eng. Struct. Dyn., 27(8), 845-867. https://doi.org/10.1002/(SICI)1096-9845(199808)27:8<845::AID-EQE760>3.0.CO;2-T
  3. Anagnostopoulos, S.A. (1988), "Pounding of buildings in series during earthquakes", Earthq. Eng. Struct. Dyn., 16, 443-456. https://doi.org/10.1002/eqe.4290160311
  4. Constantinou, M.C. (2004), Friction Pendulum Double Concave Bearing, Available at: http://nees.buffalo.edu/dec304/FP-DC%20Report-DEMO.pdf.
  5. DesRoches, R. and Muthukumar, S. (2002), "Effect of pounding and restrainers on seismic response of multiple-frame bridges", J. Struct. Eng., ASCE, 128, 860-869. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:7(860)
  6. Fenz, D.M. and Constantinou, M.C. (2006), "Behavior of the double concave friction pendulum bearing", Earthq. Eng. Struct. Dyn., 35(11), 1403-1424. https://doi.org/10.1002/eqe.589
  7. Fenz, D.M. (2008), "Behavior of the double concave friction pendulum bearing", Ph.D. Dissertation, The State University of New York at Buffalo, NY.
  8. Filiatrault, A., Wagner, P. and Cherry, S. (1995), "Analytical prediction of experimental building pounding", Earthq. Eng. Struct. Dyn., 24, 1131-1154. https://doi.org/10.1002/eqe.4290240807
  9. Goldsmith, W. (1960), Impact: The Theory and Physical Behavior of Colliding Solids, Edward Arnold, London.
  10. Hyakuda, T., Saito, K., Matsushita, T., Tanaka, N., Yoneki, S., Yasuda, M., Miyazaki, M., Suzuki, A. and Sawada, T. (2001), "The structural design and earthquake observation of a seismic isolation bearing using friction pendulum system", Proceedings of the 7th International Seminar on Seismic Isolation, Passive Energy Dissipation and Active Control of Vibration of Structure, Assisi, Italy, October.
  11. Jankowski, R. (2005), "Non-linear viscoelastic modeling of earthquake-induced structural pounding", Earthq. Eng. Struct. Dyn., 34, 595-611. https://doi.org/10.1002/eqe.434
  12. Jankowski, R. (2006), "Analytical expression between the impact damping ratio and the coefficient of restitution in the non-linear viscoelastic model of structural dynamic", Earthq. Eng. Struct. Dyn., 35, 517-527. https://doi.org/10.1002/eqe.537
  13. Kelly, J.M. (1986), "A seismic base isolation: review and bibliography", Soil Dyn. Earthq. Eng., 5(3), 202-216. https://doi.org/10.1016/0267-7261(86)90006-0
  14. Khoshnoudian, F. and Haghdoust, V. (2009), "Response of pure-friction sliding structures to three components of earthquake excitation considering variation in the coefficient of friction", Scientia Iranica, Tran. A. Civil Eng., 16(6), 1-16.
  15. Khoshnoudian, F. and Rabiei, M. (2010), "Seismic response of double concave friction pendulum base-isolated structures considering vertical component of earthquake", Adv. Struct. Eng., 13(1), 1-14. https://doi.org/10.1260/1369-4332.13.1.1
  16. Kim, S.H. and Shinozuka, M. (2003), "Effects of seismically induced pounding at expansion joints of concrete bridges", J. Eng. Mech., ASCE, 129, 1225-1234. https://doi.org/10.1061/(ASCE)0733-9399(2003)129:11(1225)
  17. Kim, Y.S. and Yun, C.B. (2007), "Seismic response characteristics of bridges using double concave friction pendulum bearings with tri-linear behavior", Eng. Struct., 29(11), 3082-3093. https://doi.org/10.1016/j.engstruct.2007.02.009
  18. Komodromos, P., Polycarpou, P.C., Papaloizou, L. and Phocas, M.C. (2007), "Response of seismically isolated buildings considering poundings", Earthq. Eng. Struct. Dyn., 36, 1605-1622. https://doi.org/10.1002/eqe.692
  19. Komodromos, P. (2008), "Simulation of the earthquake-induced pounding of seismically isolated buildings", Comput. Struct., 86, 618-626. https://doi.org/10.1016/j.compstruc.2007.08.001
  20. Maison, B.F. and Kasai, K. (1992), "Dynamics of pounding when two buildings collide", Earthquake Earthq. Eng. Struct. Dyn., 21, 771- 786. https://doi.org/10.1002/eqe.4290210903
  21. Malhotra, P.K. (1997), "Dynamics of seismic impacts in base-isolated buildings", Earthq. Eng. Struct. Dyn., 26, 797-813. https://doi.org/10.1002/(SICI)1096-9845(199708)26:8<797::AID-EQE677>3.0.CO;2-6
  22. Matsagar, V.A. and Jangid, R.S. (2003), "Seismic response of base-isolated structures during impact with adjacent structures", Eng. Struct., 25, 1311-1323. https://doi.org/10.1016/S0141-0296(03)00081-6
  23. Mostaghel, N. and Khodaverdian, M. (1987), "Dynamics of resilient-friction base isolator (R- FBI)", Earthq. Eng. Struct. Dyn., 15(3), 379-390. https://doi.org/10.1002/eqe.4290150307
  24. Mostaghel, N. and Tanbakuchi, J. (1983), "Response of sliding structures to earthquake support motion", Earthq. Eng. Struct. Dyn., 11(6), 729-748. https://doi.org/10.1002/eqe.4290110603
  25. Mokha, A., Constantinou, M.C., Reinhorn, A.M. and Zayas, V. (1991), "Experimental study of friction pendulum isolation system", Struct. Eng., ASCE, 117(4), 1201-1217. https://doi.org/10.1061/(ASCE)0733-9445(1991)117:4(1201)
  26. Murnal, P. and Sinha, R. (2002), "Earthquake resistant design of structures using the variable frequency pendulum isolator", Struct. Eng., ASCE, 128(7), 870-880. https://doi.org/10.1061/(ASCE)0733-9445(2002)128:7(870)
  27. Muthukumar, S. and DesRoches, R.A. (2006), "Hertz contact model with nonlinear damping for pounding simulation", Earthq. Eng. Struct. Dyn., 35(7), 811-828. https://doi.org/10.1002/eqe.557
  28. Nagarajaiah, S. and Sun, X. (2001), "Base-isolated FCC building: impact response in Northridge earthquake", Struct. Eng., ASCE, 127(9), 1063-1075. https://doi.org/10.1061/(ASCE)0733-9445(2001)127:9(1063)
  29. Panayiotis, P.C. and Komodromos, P. (2010), "Earthquake-induced poundings of a seismically isolated building with adjacent structures", Eng. Struct., 32, 1937-1951. https://doi.org/10.1016/j.engstruct.2010.03.011
  30. Panchal, V.R. and Jangid, R.S. (2008), "Seismic behavior of variable frequency pendulum isolator", Earthq. Eng. Eng. Vib., 7(2), 193-205. https://doi.org/10.1007/s11803-008-0824-9
  31. Ruangrassamee, A. and Kawashima, K. (2001), "Relative displacement response spectra with pounding effect", Earthq. Eng. Struct. Dyn., 30, 1511-1538. https://doi.org/10.1002/eqe.75
  32. Skinner, R.I., Robinson, W.H. and McVerry, G.H. (1993), An Introduction to Seismic Isolation, Wiley, Chichester.
  33. Su, L., Ahmadi, G. and Tadjbakhsh, I.G. (1989), "A comparative study of performance of various base isolation systems, Part I: shear beam structures", Earthq. Eng. Struct. Dyn., 18(1), 11-32. https://doi.org/10.1002/eqe.4290180104
  34. Tsai, H.C. (1997), "Dynamic analysis of base-isolated shear beams bumping against stops", Earthq. Eng. Struct. Dyn., 26, 515-528. https://doi.org/10.1002/(SICI)1096-9845(199705)26:5<515::AID-EQE654>3.0.CO;2-C
  35. Tsai, C.S., Chiang, T.C. and Chen, B.J. (2003), "Seismic behavior of MFPS isolated structure under nearfault sources and strong ground motions with long predominant periods", ASME Pressure Vessels and Piping Conference, Seismic Engineering, Ed. Chen, J.C., Cleveland, Ohio, USA.
  36. Tsai, C.S., Chen, B.J., Pong, W.S. and Chiang, T.C. (2004), "Interactive behavior of structures with multiple friction pendulum isolation system and unbounded foundations", Adv. Struct. Eng., 7(6), 539-551. https://doi.org/10.1260/1369433042863189
  37. Tsai, C.S., Chiang, T.C. and Chen, B.J. (2005), "Experimental evaluation of piecewise exact solution for predicting seismic responses of spherical sliding type isolated structures", Earthq. Eng. Struct. Dyn., 34(9), 1027-1046. https://doi.org/10.1002/eqe.430
  38. Tsopelas, P., Constantinou, M.C., Kim, Y.S. and Okamoto, S. (1996), "Experimental study of FPS system in bridge seismic isolation", Earthq. Eng. Struct. Dyn., 25(1), 65-78. https://doi.org/10.1002/(SICI)1096-9845(199601)25:1<65::AID-EQE536>3.0.CO;2-A
  39. Yang, Y.B., Lee, T.Y. and Tsai, I.C. (1990), "Response of multi-degree-of-freedom structures with sliding supports", Earthq. Eng. Struct. Dyn., 19(5), 739-752. https://doi.org/10.1002/eqe.4290190509
  40. Ye, K. and Li, L. (2009), "Impact analytical models for earthquake-induced pounding simulation", Fron. Arch. Civil Eng. China, 3, 142-147. https://doi.org/10.1007/s11709-009-0029-y
  41. Zanardo, G., Hao, H. and Modena, C. (2002), "Seismic response of multi-span simply supported bridges to a spatially varying earthquake ground motion", Earthq. Eng. Struct. Dyn., 31, 1325-1345. https://doi.org/10.1002/eqe.166
  42. Zayas, V.A., Low, S.S. and Mahin, S.A. (1990), "A simple pendulum technique for achieving seismic isolation", Earthq. Spectra, 6(2), 317-333. https://doi.org/10.1193/1.1585573

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