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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.21 No.3
- 발행연도
- 2018.1
- 수록면
- 359 - 371 (13page)
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초록· 키워드
오류제보하기
Strong seismic events commonly cause large drift and deformation, and functionality failures in the superstructures. One way to prevent functionality failures is to design structures which are ductile and flexible through yielding when subjected to strong ground excitations. By developing forces that assist motion as \"negative stiffness forces\", yielding can be achieved. In this paper, we adopt the weakening and damping method to achieve a new approach to reduce all of the structural responses by further adjusting damping phase. A semi-active control system is adopted to perform the experiments. In this adaptation, negative stiffness forces through certain devices are used in weakening phase to reduce structural strength. Magneto-rheological (MR) dampers are then added to preserve stability of the structure. To adjust the voltage in MR dampers, an inverse model is employed in the control system to command MR dampers and generate the desired control forces, where a velocity control algorithm produces initial required control force. An extensive numerical study is conducted to evaluate proposed methodology by using the smart base-isolated benchmark building. Totally, nine control systems are examined to study proposed strategy. Based on the numerical results of seven earthquakes, the use of proposed strategy not only reduces base displacements, base accelerations and base shear but also leads to reduction of accelerations and inter story drifts of the superstructure. Numerical results shows that the usage of inverse model produces the desired regulated damping, thus improving the stability of the structure.
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참고문헌 (32)
참고문헌 신청
Attary, N. / 2015 / Development of a rotation-based negative stiffness device for seismic protection of structures / J. Vib. Control 23(5):853~867
Attary, N. / 2013 / Performance assessment of a highway bridge structure employing adaptive negative stiffness for seismic protection / Structures Congress 2013: Bridging Your Passion with Your Profession :1736~1746
Attary, N. / 2015 / Performance evaluation of negative stiffness devices for seismic response control of bridge structures via experimental shake table tests / J. Earthq. Eng. 19(2):249~276
Attary, N. / 2015 / Numerical simulations of a highway bridge structure employing passive negative stiffness device for seismic protection / Earthq. Eng. Struct. D. 44(6):973~995
Attary, N. / 2012 / Performance evaluation of seismically isolated bridge structure with adaptive passive negative stiffness / Proceedings of the 15th World Conference on Earthquake Engineering (15WCEE)
Attary, N. / 2013 / Performance assessment of a highway bridge structure employing adaptive negative stiffness for seismic protection / Structures Congress 2013: Bridging Your Passion with Your Profession :1736~1746
Attary, N. / 2015 / Performance evaluation of negative stiffness devices for seismic response control of bridge structures via experimental shake table tests / J. Earthq. Eng. 19(2):249~276
Attary, N. / 2015 / Numerical simulations of a highway bridge structure employing passive negative stiffness device for seismic protection / Earthq. Eng. Struct. D. 44(6):973~995
Attary, N. / 2012 / Performance evaluation of seismically isolated bridge structure with adaptive passive negative stiffness / Proceedings of the 15th World Conference on Earthquake Engineering (15WCEE)
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