Data‐Driven Two‐Level Performance Evaluation of Eddy‐Current Tuned Mass Damper for Building Structures Using Shaking Table and Field Testing

Lü, Xilin; Zhang, Qi; Wu, Wenbiao; Shan, Jiazeng

doi:10.1111/mice.12373

Cited by 20 publications

(14 citation statements)

References 49 publications

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“…The dynamic characteristics of the controlled structure, such as the fundamental modal frequency, are prior required before optimally tuning the TMD for resonance and energy dissipation, which information can be provided by SFT or SHM. Following that, the energy-dissipation capacity and control performance can be verified by using the measurement data not only under the ambient vibration but also from strong loading events such as typhoons 27,35 and earthquakes. 45 The valuable observation provided by SFT and SHM accelerates the implementation of emerging control devices on high-rise buildings for disaster mitigation, operational maintenance, and human comfort.…”

Section: Rms Accelerationmentioning

confidence: 99%

Health monitoring and field‐testing of high‐rise buildings: A review

Shan

Zhang

Shi

et al. 2020

Structural Concrete

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Health monitoring and field‐testing have been two emerging technologies for investigating the real‐world behaviors of high‐rise buildings. The five primary motivations of the two monitoring‐oriented methods are first presented. The four fundamental steps of the data‐driven process are followingly discussed. Then, the state‐of‐the‐art structural health monitoring systems on four representative super‐tall buildings and the relevant data analysis methodologies are reviewed, with the summary of the corresponding observations from data interpretation. The recent practice on seismic monitoring and data‐informed structural evaluation are discussed. Especially, the tradeoff problem on parametric identification for data‐driven modeling of real‐life structures is presented. Finally, the future of health monitoring and field‐testing of high‐rise buildings is presented with several potential issues highlighted.

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Section: Rms Accelerationmentioning

confidence: 99%

Health monitoring and field‐testing of high‐rise buildings: A review

Shan

Zhang

Shi

et al. 2020

Structural Concrete

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“…The eddy current damper has been applied to the tuned mass damper in Shanghai Center Tower and investigated by the authors . The damping force F d on the permanent magnet induced by the eddy current in the conducting plate may then be determined as

boldF = \int_{V} boldJ \times boldB normald V,

boldJ = σ ((), boldv \times boldB),

where

\int_{V} normald V

is the integration operator over the copper plate; J is the current density; B is the distribution of magnetic flux density B = B x i + B y j + B z k , which can be calculated according to the existing theory; v is the relative velocity between the moving magnet and the copper plate of Component I; and σ is the electric conductivity of the copper plate.…”

Section: Theory Of Proposed Nonlinear Base Isolationmentioning

confidence: 99%

Performance improvement of base isolation systems by incorporating eddy current damping and magnetic spring under earthquakes

Shan

Shi

Gong

et al. 2020

Struct Control Health Monit

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Summary An innovative subsystem with the incorporation of eddy current (EC) damping and magnetic negative stiffness spring (MNSS) is proposed to develop feasible strategies for performance improvement of existing base isolation techniques. The concept of integrating the eddy current damping mechanism and the nonlinear negative stiffness spring is firstly introduced for better energy transition behavior under earthquake excitations. The analytical expressions of the force characteristics of the EC and the MNSS components are presented accordingly, and a parametric study is conducted to evaluate the inherent properties of the integrated magnetic subsystem. To demonstrate the advantages of the EC–MNSS subsystem, an illustrative example of a two‐DOF model simulating both the superstructure and the isolation layer is numerically investigated by adopting two representative isolators and the proposed subsystem. The EC–MNSS subsystem is illustrated to significantly and simultaneously improve the isolation performances in terms of base drift and structural acceleration. The energy exchange and dissipation behavior are further revealed by employing time history analysis and energy‐displacement‐velocity plots. Furthermore, the proposed EC–MNSS subsystem is implemented in a benchmark isolation problem adopting an eight‐story frame structure subjected to bidirectional earthquake excitations. The simulation results indicate the superior and the comparable performances of the integrated isolation system as compared to those of the passive and the control‐augmented isolations, respectively.

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“…erefore, a variety of damping elements are introduced to the TMD to improve vibration control efficiency and robustness, such as friction dampers [15,16], eddy-current components [17][18][19][20], inerters [21][22][23][24], particle dampers [25,26], and shape memory alloys [27][28][29]. Most of these damping elements are expensive in cost and difficult in maintenance.…”

Section: Introductionmentioning

confidence: 99%

Seismic Vibration Mitigation of a Cable-Stayed Bridge with Asymmetric Pounding Tuned Mass Damper

Zhang

Tan

Liu

et al. 2021

Mathematical Problems in Engineering

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In order to mitigate the seismic response of a cable-stayed bridge, a new type damping device named asymmetric pounding tuned mass damper (APTMD) is developed in this paper on the basis of the traditional symmetric pounding tuned mass damper. The novel APTMD has three parameters to be determined: the left-side gap, the right-side gap, and the frequency ratio. A numerical model of the APTMD damping system is established with consideration of both the computational efficiency and accuracy to enable the parametric optimization of the damper. The numerical model is based on a simplified model of the cable-stayed bridge and a nonlinear pounding force model. The genetic algorithm is utilized for the optimization of the damper. Afterwards, the cable-stayed bridge is subjected to 20 recorded ground motions to evaluate the vibration control effectiveness of the APTMD. Four systems are considered: (1) without dampers; (2) with a TMD; (3) with a PTMD; and (4) with an APTMD. Time history analysis reveals the following: (1) those dampers can all effectively suppress the vibration of the bridge and (2) the vibration control effectiveness of the APTMD is slightly better than the TMD and the PTMD.

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Data‐Driven Two‐Level Performance Evaluation of Eddy‐Current Tuned Mass Damper for Building Structures Using Shaking Table and Field Testing

Cited by 20 publications

References 49 publications

Health monitoring and field‐testing of high‐rise buildings: A review

Health monitoring and field‐testing of high‐rise buildings: A review

Performance improvement of base isolation systems by incorporating eddy current damping and magnetic spring under earthquakes

Seismic Vibration Mitigation of a Cable-Stayed Bridge with Asymmetric Pounding Tuned Mass Damper

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