Control of Seismically Excited Cable-Stayed Bridge Employing Magnetorheological Fluid Dampers

Jung, Hyung‐Jo; Spencer, Billie F.; Lee, Inwon

doi:10.1061/(asce)0733-9445(2003)129:7(873)

Cited by 129 publications

(85 citation statements)

References 17 publications

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“…Additional papers were also published in Volumes 129(7) and 10(3-4) of the Journal of Structural Engineering (ASCE) and the Journal of Structural Control, respectively. The aforementioned studies along with additional ones published independently, included applications (with regard to semi-active control) of stiffness control devices 47,80 , friction control devices 47,81 , controllable fluid dampers [82][83][84][85][86] , negative stiffness devices 87 , and hybrid base isolation systems 88,89 .…”

Section: Overview Of Benchmark Studiesmentioning

confidence: 99%

Semi-Active Control Systems in Bridge Engineering: A Review of the Current State of Practice

Gkatzogias

Kappos

2016

Structural Engineering International

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This is the accepted version of the paper.This version of the publication may differ from the final published version. In view of the grave socioeconomic consequences of earthquake damage to bridge structures, along with their critical role in modern and older road and rail networks, this article attempts to identify and summarise the current trends in the use of semi-active control technology in bridge engineering, as an enhanced seismic response control solution, combining increased adaptability and reliability, compared to passive and active schemes. In this context, representative analytical and experimental studies, as well as some full-scale applications of semi-active control devices are first reviewed and a brief description of relevant benchmark studies is subsequently presented, with a view to serving as a point of reference for further research and development. A framework of performance-based control principles aiming at the aforementioned objectives is finally set forth. Permanent

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Section: Overview Of Benchmark Studiesmentioning

confidence: 99%

Semi-Active Control Systems in Bridge Engineering: A Review of the Current State of Practice

Gkatzogias

Kappos

2016

Structural Engineering International

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“…In the optimal control theory, equation (16) Substituting equation (14) into equation (13) shows that the control vector u(t) is linear in z(t). Thus, the law of optimal control is:…”

Section: Semi-active Control Using the Lqr Associated With The Clippementioning

confidence: 99%

“…Among the most interesting proposals addressing the development of control algorithms is the control strategy developed in [4], which suggested using a clipped optimal controller based on acceleration feedback. This algorithm has been employed in various buildings with isolated bases [12], in seismic control nonlinear buildings [13], to reduce vibrations on cable-stayed bridges [14], and to provide seismic protection of highway bridges [15].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of semi-active control algorithms applied to magnetorheological dampers

Lara-V.

Brito²,

2017

Ingeniare. Rev. chil. ing.

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This paper analyzes the performance of three different semi-active control algorithms used to calculate and manage the optimal damping forces generated by a pair of magnetorheological (MR) dampers installed in a two-story building. The semi-active algorithms used are the linear quadratic regulator (LQR) associated with the clipped optimal algorithm, an algorithm based on a prediction model and a dynamic inverse model using nonlinear autoregressive exogenous (NARX)-type artificial neural networks, and a decision-making algorithm based on fuzzy logic. Additionally, the performances of the proposed semi-active algorithms are compared to those of passively used control devices. The results show response value reductions exceeding 50% for all the semi-active control strategies, which considerably outperformed the passive control. The three control strategies are thus confirmed as interesting tools with potential applications as MR damper administrators.Keywords: Structure dynamics, semi-active control of structures, vibration reduction, magnetorheological dampers, control algorithms, intelligent systems. RESUMEN En este artículo se analiza numéricamente la eficiencia y el desempeño de tres diferentes algoritmos de control semiactivo que tienen la función de calcular y administrar las fuerzas óptimas de amortiguamiento que deben ser generadas por un par de amortiguadores magnetoreológicos instalados en una estructura de dos niveles. Los algoritmos semi-activos empleados son el regulador lineal cuadrático (LQR), asociado al algoritmo clipped optimal y dos algoritmos fundamentados en sistemas inteligentes: un algoritmo basado en un modelo de predicción y en un modelo inverso dinámico construidos por medio de redes neuronales artificiales de tipo NARX y un algoritmo de toma de decisiones basados en lógica difusa. Adicionalmente, la actuación de los algoritmos de control semi-activo propuestos es comparada con el desempeño de los

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“…MR dampers have been mainly applied to vibration control of highway bridges, cable supported bridges, and tall buildings [18][19][20][21][22]. Many mathematical models have been proposed to model the intrinsic non-linear behavior of MR dampers such as Bingham model, viscoelastic-plastic model, BoucWen model, phenomenological model, improved BoucWen model, modi ed Dahl model, normalized Boucwen model, and many others.…”

Section: Introductionmentioning

confidence: 99%

“…It is very important for a model to be able to portray the non-linear behavior of the damper and easily identify the system parameters [9,[23][24][25][26]. Jung et al [18] examined the application of MR dampers with a comprehensive study of the adequacy of di erent types of dynamic models for MR uid dampers, such as Bingham model, Bouc-Wen model, and modi ed BoucWen model. The results indicated that the application of MR control system is generally similar to that of the active control system; the Bouc-Wen model and the modi ed Bouc-Wen model were also shown to be more computationally tractable than the others.…”

Section: Introductionmentioning

confidence: 99%

Vertical vibration control of suspension bridges subjected to earthquake by Semi-active MR dampers

Bahar

Pourzeynali

2017

Scientia Iranica

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Abstract. In this paper, a semi-active control technique is presented to mitigate the seismic vertical response of suspension bridges using Magneto-Rheological (MR) dampers. MR dampers, as semi-active control devices, have received signi cant attention in recent years because of their adaptability of working as active control devices without requiring large power of sources. The most challenging problem in this study is how to install the dampers at the degrees along the bridge span far from the towers. In the present paper, to solve this problem, a \rigid truss", which is attached to the bottom of the bridge deck, is proposed. The MR damper can be installed between the bridge deck and free-end of the truss. For numerical study, the Vincent-Thomas suspension bridge is chosen and di erent schemes, in point of number and location of the dampers view, are proposed to get optimal performance of the dampers in reducing the bridge vertical responses. To reach this goal, all of the schemes are optimized, and the controlled and uncontrolled responses of the bridge are calculated under application of 15 major world-wide earthquake accelerogrames. The results indicate that the proposed models can e ectively reduce the vertical responses of the example bridge.

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Control of Seismically Excited Cable-Stayed Bridge Employing Magnetorheological Fluid Dampers

Cited by 129 publications

References 17 publications

Semi-Active Control Systems in Bridge Engineering: A Review of the Current State of Practice

Semi-Active Control Systems in Bridge Engineering: A Review of the Current State of Practice

Comparative analysis of semi-active control algorithms applied to magnetorheological dampers

Vertical vibration control of suspension bridges subjected to earthquake by Semi-active MR dampers

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