Influence of nonlinear fluid viscous dampers in controlling the seismic response of the base-isolated buildings

Deringöl, Ahmet Hilmi; Güneyisi, Esra Mete

doi:10.1016/j.istruc.2021.08.106

Cited by 26 publications

(9 citation statements)

References 59 publications

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“…2. Typical FVD (a) outline and (b) Maxwell model [11] Numerous studies have been conducted on the development of dampers, empirical validations, design improvements, and configuration of the layout of the fluid viscous damper. For example, Chalarca et al [17] showed that the FVDs significantly reduced the floor acceleration response.…”

Section: Introductionmentioning

confidence: 99%

“…They also suggested that an additional viscous damper would be more useful for the behavior of base-isolated buildings in terms of displacement of the isolation layer and acceleration at floor levels. Deringol and Guneyisi [11] investigated the effectiveness of FVD for a base-isolated 10-story steel moment-resisting frame isolated with LRB. They found that, especially under high-acceleration earthquakes, compared with buildings having only LRB, with the use of both LRB and FVDs on the isolated floor, the maximum story displacement of isolated frames was reduced from 10% to 25%.…”

Section: Introductionmentioning

confidence: 99%

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Using supplemental linear viscous dampers for experimentally verified base-isolated building: Case study

Kıral,

Gurbuz

2024

JSEAM

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As a way to reduce structural vibration, many buildings are initially intended to be base-isolated. However, because of the base isolators' inherent nonlinear behavior, particularly in earthquake-prone areas, buildings equipped with base isolation systems may experience significant displacement demands. Therefore, in certain situations, it might be required to use additional damping devices to control the seismic response of base-isolated buildings. This study examines three different building models: Fixed Base (FB), Isolated Base (IB), and Isolated Base with installed Viscous Dampers (IB&VD) in the base layer of the building. Sosokan, a nine-story structure on Keio University's Yagami Campus, is utilized for this purpose. The building is modeled in MATLAB. A state-space representation of the building with a Maxwell-type viscous damper model is used. The responses of the building models with FB, IB, and IB&VD are evaluated by time history analyses using eight ground motion records. Certain engineering requirements criteria, such as inter-story drift ratios and absolute acceleration, are taken into consideration while evaluating the findings of the analysis. Based on one of this study's main findings, a base-isolated building with passive viscous damping in the base layer could significantly reduce both maximum seismic displacement and acceleration. Maximum acceleration and inter-story drift are lowered by up to 92% and 89%, respectively, when IB&VD is scaled to the FB model. Based on the results of this study, passive viscous dampers combined with building base isolation are not only useful for multi-objective optimization (i.e., reducing acceleration as well as inter-story drift) but they can also be used to reduce high-frequency accelerations, which could be important for building equipment that is sensitive to acceleration.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using supplemental linear viscous dampers for experimentally verified base-isolated building: Case study

Kıral,

Gurbuz

2024

JSEAM

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“…The results further elucidated the seismic influence of limiter stiffness and reserved gap size on the dynamic response of the isolation layer and superstructure. One of the main findings by Deringöl 12 and his colleagues is that base-isolated buildings with passive damping devices respond satisfactorily when combined with appropriate design parameters.…”

Section: Introductionmentioning

confidence: 99%

Seismic response analysis of super-high-rise building structures with three-layer isolation systems

Zhang,

Guo,

Liu

et al. 2023

Sci Rep

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This paper proposes a triple-layer isolation device based on the single-story isolation and double-layer isolation. By establishing dynamic equilibrium equations and conducting earthquake response comparative analyses on the same super-tall building structure using three different forms of isolation: single-story isolation, double-layer isolation, and triple-layer isolation, it is found that the triple-layer isolation device, which adds an isolation layer on the basis of the double-layer isolation device, exhibits many different characteristics in terms of its damping mechanism, seismic response rules, etc., due to the differences in the position and quantity of the isolation layer. Rare earthquakes are equivalent to ASCE maximum considered earthquake or annual occurrence probability of 2%. The research shows that, under rare earthquake conditions, the isolation effect of the triple-layer isolation device in the super-tall frame-shear structure is better than that of the single-story isolation and double-layer isolation devices. Particularly, as the number of floors increases, the triple-layer isolation device can significantly reduce the seismic isolation support tension and compression stresses, inter-story displacement, single-story shear force, overturning moment, and floor acceleration of the high-rise building structure, and concentrate the lateral displacement of the structure on the three isolation layers, dissipating most of the seismic input energy.

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“…Theoretical and experimental research on seismically isolated buildings has received increased attention in recent years, and related research has become increasingly comprehensive [11][12][13][14][15][16][17]. To strengthen a medical building, Ye et al [18] used three seismic isolation schemes: foundation isolation, additional flexural restraint bracing, and additional sway walls.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance and Optimization of a Novel Partial Seismic Isolation System for Frame Structures

Chen¹,

Qiu²,

Xiong³

et al. 2022

Buildings

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To improve the safety performance of important rooms, such as operating rooms and disaster command centers, during an earthquake, a novel partial seismic isolation system suitable for new and existing frame structures is proposed, and the seismic and optimization analysis is carried out. Using the finite element numerical simulation method, the models of the ordinary frame structure and the partial isolated system structures were established. Considering the seismic response of the isolation room, the design safety of the partial isolation room, and the seismic impact on the overall structure, this study analyzed the damping effect of the partial isolation system. We changed the type of isolation bearing, the location of the isolation room, and the load to further optimize the calculation of the seismic isolation structure. The results show that the new partial isolation system could significantly reduce the seismic response of the isolated room under the action of a magnitude-8 rare earthquake. The damping rate of the relative acceleration and relative displacement between the top and bottom of the columns of the isolated room could reach 90%. It was found that the partial seismic isolation system proposed in this paper was applicable to reinforced concrete frame structures and could significantly reduce the seismic response of the isolated rooms without affecting the seismic performance of the main building. This partial seismic isolation system is easy to construct, applicable to both existing and new structures, and provides a new and effective seismic mitigation measure to improve the seismic performance of locally important rooms in the structure.

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Influence of nonlinear fluid viscous dampers in controlling the seismic response of the base-isolated buildings

Cited by 26 publications

References 59 publications

Using supplemental linear viscous dampers for experimentally verified base-isolated building: Case study

Using supplemental linear viscous dampers for experimentally verified base-isolated building: Case study

Seismic response analysis of super-high-rise building structures with three-layer isolation systems

Seismic Performance and Optimization of a Novel Partial Seismic Isolation System for Frame Structures

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