Effect of Tuned Mass Damper with Various Mass Fractions on the Seismic Performance of Isolated Reinforced Concrete Structures

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Kouhdaragh Mehdi

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Journal Paper

Paper Information

Journal: JOURNAL OF STRUCTURAL ENGINEERING Year:2020 | Volume:17 | Issue:2 Page(s): 15-25

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Information Journal Paper

Title

Effect of Tuned Mass Damper with Various Mass Fractions on the Seismic Performance of Isolated Reinforced Concrete Structures

Author(s)

Kouhdaragh Mehdi | Issue Writer Certificate

Keywords

Lead Rubber Bearing

Mass damper

Dynamic analysis

Seismic system

Concrete structures

Abstract

Dampers and isolators are energy dissipating devices to control and reduce the seismic responses of structures under strong earthquakes. One of the most widely used of these devices is a special type of damper called TMD Mass dampers and LRB lead core separators. Tuned Mass dampers (TMD) and Lead Rubber Bearings (LRB) are of the most widely used types of these devices. The scientific study of the seismic characteristics and nonlinear behavior of structural systems equipped with this type of dampers and isolators can significantly help to understand the behavior of these systems against the lateral forces imposed by strong earthquakes. In this research, a 12-story concrete structure with Mass damper with various mass fractions, without isolator and with lead core isolator is designed. Then, applying time history analysis in SAP2000 software in isolated states without damper and with damper with different mass fractions, the responses of the structures against the mentioned earthquakes are obtained. The results of the analysis presented that the presence of Mass damper is very effective due to the increased displacement in the isolated level. This effect is increased by increasing the mass fraction of the damper. The seismic isolator, on the other hand, can reduce the relative displacements of stories by 20 to 30% on average. The Mass damper controls the large displacements of the isolator. The results in the studied structure revealed that in order to utilize the maximum capabilities of the isolator, it should be combined with Mass damper.

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APA: Copy

Kouhdaragh, Mehdi. (2020). Effect of Tuned Mass Damper with Various Mass Fractions on the Seismic Performance of Isolated Reinforced Concrete Structures. JOURNAL OF STRUCTURAL ENGINEERING, 17(2 ), 15-25. SID. https://sid.ir/paper/364079/en

Vancouver: Copy

Kouhdaragh Mehdi. Effect of Tuned Mass Damper with Various Mass Fractions on the Seismic Performance of Isolated Reinforced Concrete Structures. JOURNAL OF STRUCTURAL ENGINEERING[Internet]. 2020;17(2 ):15-25. Available from: https://sid.ir/paper/364079/en

IEEE: Copy

Mehdi Kouhdaragh, “Effect of Tuned Mass Damper with Various Mass Fractions on the Seismic Performance of Isolated Reinforced Concrete Structures,” JOURNAL OF STRUCTURAL ENGINEERING, vol. 17, no. 2 , pp. 15–25, 2020, [Online]. Available: https://sid.ir/paper/364079/en

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