지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.23 No.5
- 발행연도
- 2019.1
- 수록면
- 449 - 466 (18page)
이용수
초록· 키워드
오류제보하기
Cable-stayed bridges are attractive due to their beauty, reducing material consumption, less harm to the environment and so on, in comparison with other kinds of bridges. As a massive structure with long period and low damping (0.3 to 2%) under many dynamic loads, these bridges are susceptible to fatigue, serviceability disorder, damage or even collapse. Tuned Mass Damper (TMD) is a suitable controlling system to reduce the vibrations and prevent the threats in such bridges. In this paper, Multi Tuned Mass Damper (MTMD) system is added to the Ahvaz cable stayed Bridge in Iran, to reduce its seismic vibrations. First, the bridge is modeled in SAP2000 followed with result verification. Dead and live loads and the moving loads have been assigned to the bridge. Then the finite element model is developed in OpenSees, with the goal of running a nonlinear time-history analysis. Three far-field and three near-field earthquake records are imposed to the model after scaling to the PGA of 0.25 g, 0.4 g, 0.55 g and 0.7 g. Two MTMD systems, passive and active, with the number of TMDs from 1 to 8, are placed in specific points of the main span of bridge, adding a total mass ratio of 1 to 10% to the bridge. The parameters of the TMDs are optimized using Genetic Algorithm (GA). Also, the optimum force for active control is achieved by Fuzzy Logic Control (FLC). The results showed that the maximum displacement of the center of the bridge main span reduced 33% and 48% respectively by adding passive and active MTMD systems. The RMS of displacement reduced 37% and 47%, the velocity 36% and 42% and also the base shear in pylons, 27% and 47%, respectively by adding passive and active systems, in the best cases.
목차
등록된 정보가 없습니다.
참고문헌 (29)
참고문헌 신청
Dehghan-Niri, E. / 2010 / Effectiveness-robustness objectives in MTMD system design : An evolutionary optimal design methodology / Struct. Control Health Monit 17(2):218~236
Den Hartog, J. P. / 1947 / Mechanical vibrations / McGraw-Hill
Said Elias / 2017 / Research developments in vibration control of structures using passive tuned mass dampers / Annual Reviews in Control 44:129~156
K. C. Falcon / 2006 / Optimization of Vibration Absorbers: A Graphical Method for use on Idealized Systems with Restricted Damping / Journal of Mechanical Engineering Science 9(5):374~381
Frahm, H. / 1909 / Devices for Damping Vibration of Bodies, US Patent
Den Hartog, J. P. / 1947 / Mechanical vibrations / McGraw-Hill
Said Elias / 2017 / Research developments in vibration control of structures using passive tuned mass dampers / Annual Reviews in Control 44:129~156
K. C. Falcon / 2006 / Optimization of Vibration Absorbers: A Graphical Method for use on Idealized Systems with Restricted Damping / Journal of Mechanical Engineering Science 9(5):374~381
Frahm, H. / 1909 / Devices for Damping Vibration of Bodies, US Patent
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