Energy-based fragility curves of building structures equipped with viscous dampers

Zhou, Ying; Xiao, Yi; Sebaq, Mohammed Samier

doi:10.1016/j.istruc.2022.08.101

Cited by 6 publications

(2 citation statements)

References 53 publications

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“…Therefore, by using the weight coefficient for adjustment, the optimization function with a relatively reasonable final value, economy, and practicability is established. For the introduced energy dissipation parameters, considering the optimization results of Zhou et al's work [8] , for the weight of f Ce , 0.4 is taken. The control weights of the remaining structural vibration and structural response are 0.24 and 0.36.…”

Section: Construction Of Optimization Functionsmentioning

confidence: 99%

Multi-Parameter Damper Optimization of Cable-Stayed Bridge Considering Energy Dissipation

Liu

Geng

Wang

et al. 2023

J. Phys.: Conf. Ser.

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The parameters optimization of a viscous damper is carried out with a cable-stayed bridge with a single cable plane and a single tower. Based on five optimization parameters and four optimization functions of damper energy dissipation and structure, the relationship between each function and damper parameters is obtained. Finally, the spatial distribution surface of the multi-parameter objective optimization function is constructed, and the final optimization result is obtained. The optimization process shows that the reasonable viscous damper parameters can effectively inhibit the vibration and structural response of the bridge under seismic excitation. At the same time, the single control target optimization function may result in non-convergence, and the optimization value cannot be obtained. The multi-parameter objective optimization function introduced considering the energy dissipation of the damper can effectively avoid this shortcoming and finally obtain reasonable damper optimization parameters.

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Section: Construction Of Optimization Functionsmentioning

confidence: 99%

Multi-Parameter Damper Optimization of Cable-Stayed Bridge Considering Energy Dissipation

Liu

Geng

Wang

et al. 2023

J. Phys.: Conf. Ser.

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“…De Domenico and Ricciardi, [23] and Domenico et al [24] focused on energy-based optimization for the design of nonlinear FVDs in an elastic 10-story building. Zhou et al [25,26] presented energy-based assessment of FVD-controlled buildings (3-, 6-, 9-and 20-story) designed by conventional methods to predict energy dissipation demands. Zhou et al [27] evaluated the effect of FVD properties on the input and plastic energies for SDOF bilinear systems under only near-field ground motions.…”

Section: Introductionmentioning

confidence: 99%

Plastic energy evaluation of bilinear SDOF systems with fluid viscous dampers

Sebaq

Zhou

Song

et al. 2023

Structural Design Tall Build

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Summary Current seismic practices are more concerned with dissipating a significant portion of seismic input energy than with lateral load resistance, as well as with determining seismic demands of structures using response spectra. This study aims to improve the knowledge of the plastic energy spectra ( EP) of single‐degree‐of‐freedom systems (SDOF) equipped with fluid viscous dampers (FVDs). This type of dampers is characterized by its supplemental damping ratio ξadd0.25em and velocity power α. Using nonlinear dynamic analyses, the EP and its ratio to the input energy ( EP/EI) are determined using near‐field‐pulse, near‐field‐non‐pulse and far‐field ground motions. Parametric studies are conducted to investigate the effect of ground motion types, original system features and FVD characteristics on EP/EI spectra. The results show that ground motion types have a considerable influence on the EP/EI for systems with FVDs, while they are not effective for systems without FVDs. Increasing FVD nonlinearity (decreasing α) is more effective to reduce the EP/EI under near‐field‐non‐pulse and far‐field motions than under near‐field‐pulse ground motions for structures with Tn > 1 s. The paper further developed a prediction equation for estimating EP/EI0.25emfor SDOF systems without and with FVDs, which can serve as a useful tool to analyse structural damage for energy‐based seismic design.

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Performance-based seismic design and vulnerability assessment of concrete frame retrofitted by metallic dampers

Guo,

Wang,

Wang

et al. 2023

Structures

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Energy-based fragility curves of building structures equipped with viscous dampers

Cited by 6 publications

References 53 publications

Multi-Parameter Damper Optimization of Cable-Stayed Bridge Considering Energy Dissipation

Multi-Parameter Damper Optimization of Cable-Stayed Bridge Considering Energy Dissipation

Plastic energy evaluation of bilinear SDOF systems with fluid viscous dampers

Performance-based seismic design and vulnerability assessment of concrete frame retrofitted by metallic dampers

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