Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
권호 표지
DOI QR코드

DOI QR Code

Seismic Retrofit Using Damping Devices for Short-period Structures Excited by Ground Accelerations Similar to Gyeong-ju Earthquakes

감쇠장치를 사용한 경주지진과 유사한 특성을 가지는 지반가속도로 가진된 단주기구조물 내진성능보강

  • Roh, Ji Eun (Department of Architectural Engineering, Dankook University) ;
  • Lee, Sang Hyun (Department of Architectural Engineering, Dankook University) ;
  • Seo, Jun Won (Department of Architectural Engineering, Dankook University)
  • Received : 2016.11.21
  • Accepted : 2016.12.05
  • Published : 2016.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, effectiveness of seismic retrofitting methods using passive damping devices was investigated through numerical analyses of short-period structures under earthquakes which have short-duration and high-frequency impulse characteristics similar to Geyongju earthquakes. Displacement spectra of elastic systems and ductility demand of inelastic systems were evaluated by increasing viscous or friction damping. The damping devices could reduce responses of the structures with shorter structural period than 0.2s. The earthquakes similar to impulse load did not induce the responses of the structures with longer period than 0.4s, and the effects of the damping devices which generates damping forces proportional to structural responses became insignificant.

Keywords

References

  1. Rho JE, Lee SH, Seo JW, Kim DK. Ductility demand for short-period structures excited by ground accelerations similar to Gyeong-ju earthquakes, EESK J. Earthquake Eng. c2016. submitted.
  2. Wu Z, Soong TT. Design spectra for actively controlled structures based on convex models. Engineering Structures. 1996; 18(5):341-50. https://doi.org/10.1016/0141-0296(96)00106-X
  3. Ben-Haim Y, Chen G, Soong TT. Maximum structural response using convex models, Journal of Engineering Mechanics, 1996; 122(4):325-33. https://doi.org/10.1061/(ASCE)0733-9399(1996)122:4(325)
  4. Shinozuka M. Maximum structural response to seismic excitations, Journal of Engineering Mechanics. 1970; 96:729-738.
  5. Crandall SH, Chandiramani KL, Cook RG, Some first-passage problems in random vibration. Journal of Applied Mechanics, 1966;33:532-538. https://doi.org/10.1115/1.3625118
  6. Newmark NM, Hall WJ, Seismic Design Criteria for Nuclear Reactor Facilities, Building Practices for Disaster Mitigation. National Bureau of Standards. 1973;Report 46:209-236.
  7. Chopra AK. Dynamics of Structures. 2nd Edition, Prentice Hall. c2000.
  8. Moayyad P, Mohraz B. A study of power spectral density of earthquake acceleragrams. NSF Report PFR 8004824, Civil Mechanical Engineering Department, Southern Methodist University, Dallas, Texas. c1982.
  9. Soong TT, Dargush GF. Passive Energy Dissipation Systems in Structural Engineering. John Wiley & Sons Chichester. c1997.
  10. Pall AS, Marsh C. Response of friction damped braced frames. Journal of Structural Engineering. 1982;108(9):1313-1323.
  11. Constantinou MC, Mokha A, Reinhorn AM. Teflon bearings in base isolation. II: Modeling. Journal of Structural Engineering, 1990; 116(2):455-474. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:2(455)
  12. Li C, Reinhorn AM. Experimental and Analytical Investigation of Seismic Retrofit of Structures with Supplemental Damping: Part II - Friction Devices. Technical Report NCEER-95-0009, State University of New York at Buffalo, Buffalo, NY. c1995.
  13. Filiatrault A, Cherry S. Seismic design spectra for friction-damped structures, Journal of Structural Engineering, 1990; 116:1334-1355. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:5(1334)
  14. Cherry S, Filiatrault A. Seismic response control of buildings using friction dampers, Earthquake Spectra. 1993;9:447-466. https://doi.org/10.1193/1.1585724
  15. Lee SH, Min KW, Park JH, Lee RJ. Optimal design of friction dampers based on the story shear force distribution of a building structure. JEESK J. Earthquake Eng. 2005;9(6):21-30.