Smart Structures and Systems

  • 제6권8호
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  • Pages.953-974
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  • 2010
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic response control of benchmark highway bridge using variable dampers

  • Madhekar, S.N. (Department of Civil Engineering, Indian Institute of Technology Bombay) ;
  • Jangid, R.S. (Department of Civil Engineering, Indian Institute of Technology Bombay)
  • 투고 : 2009.04.17
  • 심사 : 2010.04.16
  • 발행 : 2010.11.25
⟨ 이전 논문 다음 논문 ⟩

초록

The performance of variable dampers for seismic protection of the benchmark highway bridge (phase I) under six real earthquake ground motions is presented. A simplified lumped mass finite-element model of the 91/5 highway bridge in Southern California is used for the investigation. A variable damper, developed from magnetorheological (MR) damper is used as a semi-active control device and its effectiveness with friction force schemes is investigated. A velocity-dependent damping model of variable damper is used. The effects of friction damping of the variable damper on the seismic response of the bridge are examined by taking different values of friction force, step-coefficient and transitional velocity of the damper. The seismic responses with variable dampers are compared with the corresponding uncontrolled case, and controlled by alternate sample control strategies. The results of investigation clearly indicate that the base shear, base moment and mid-span displacement are substantially reduced. In particular, the reduction in the bearing displacement is quite significant. The friction and the two-step friction force schemes of variable damper are found to be quite effective in reducing the peak response quantities of the bridge to a level similar to or better than that of the sample passive, semi-active and active controllers.

키워드

참고문헌

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피인용 문헌

  1. Anti-seismic reliability analysis of continuous rigid-frame bridge based on numerical simulations vol.6, pp.1, 2013, https://doi.org/10.1080/19373260.2012.716721
  2. Thermodynamic Behaviors of a Kind of Self-Decoupling Magnetorheological Damper vol.2015, 2015, https://doi.org/10.1155/2015/502747
  3. Effectiveness of classical rolling pendulum bearings vol.1, pp.2, 2016, https://doi.org/10.12989/mmm.2016.1.2.157
  4. Effectiveness of classical rolling pendulum bearings vol.6, pp.2, 2017, https://doi.org/10.12989/csm.2017.6.2.127