Structural Engineering and Mechanics

  • 제53권2호
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  • Pages.227-248
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  • 2015
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Base isolation performance of a cone-type friction pendulum bearing system

  • Jeon, Bub-Gyu (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Chang, Sung-Jin (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Kim, Sung-Wan (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Kim, Nam-Sik (Department of Civil & Environmental Engineering, Pusan National University)
  • 투고 : 2013.06.01
  • 심사 : 2014.05.09
  • 발행 : 2015.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

A CFPBS (Cone-type Friction Pendulum Bearing System) was developed to control the acceleration delivered to a structure to prevent the damage and degradation of critical communication equipment during earthquakes. This study evaluated the isolation performance of the CFPBS by numerical analysis. The CFPBS was manufactured in the shape of a cone differenced with the existing FPS (Friction Pendulum System), and a pattern was engraved on the friction surface. The natural frequencies of the CFPBS were evaluated from a free-vibration test with a seismic isolator system consisting of 4 CFPBS. To confirm the earthquake-resistant performance, a numerical analysis program was prepared using the equation of the CFPBS induced from the equations of motion. The equation reported by Tsai for the rolling-type seismic isolation bearings was proposed to design the equation of the CFPBS. Artificial seismic waves that satisfy the maximum earthquake scale of the Korean Building Code-Structural (KBC-2005) were created and verified to review the earthquake-resistant performance of the CFPBS by numerical analysis. The superstructural mass of the CFPBS and the skew angle of friction surface were considered for numerical analysis with El Centro NS, Kobe NS and artificial seismic waves. The CFPBS isolation performance evaluation was based on the numerical analysis results, and comparative analysis was performed between the results from numerical analysis and simplified theoretical equation under the same conditions. The validity of numerical analysis was verified from the shaking table test.

키워드

과제정보

연구 과제 주관 기관 : Korea Institute of Energy Technology Evaluation and Planning (KETEP)

참고문헌

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피인용 문헌

  1. Viscoelastic frictional properties of rubber-layer roller bearings (RLRB) seismic isolators vol.52, pp.11-12, 2017, https://doi.org/10.1007/s11012-016-0612-y
  2. Behavior of a Rocking Block Resting on a Rolling Isolation System vol.143, pp.8, 2017, https://doi.org/10.1061/(ASCE)EM.1943-7889.0001249
  3. Vertical Accelerations in Rolling Isolation Systems: Experiments and Simulations vol.142, pp.3, 2016, https://doi.org/10.1061/(ASCE)EM.1943-7889.0001017
  4. A review of rolling-type seismic isolation: Historical development and future directions vol.125, 2016, https://doi.org/10.1016/j.engstruct.2016.07.031
  5. Generation of synthetic accelerograms for telecommunications equipment: fragility assessment of a rolling isolation system pp.1573-1456, 2019, https://doi.org/10.1007/s10518-018-0505-7
  6. Seismic mitigation of substation cable connected equipment using friction pendulum systems vol.72, pp.6, 2015, https://doi.org/10.12989/sem.2019.72.6.785
  7. Application of Tuned Mass Damper to Mitigation of the Seismic Responses of Electrical Equipment in Nuclear Power Plants vol.13, pp.2, 2015, https://doi.org/10.3390/en13020427
  8. Seismic Experimental Assessment of Remote Terminal Unit System with Friction Pendulum under Triaxial Shake Table Tests vol.11, pp.9, 2015, https://doi.org/10.3390/met11091428