New Structural Seismic Isolation System

Kasimzade, Azer A.; Tuhta, Sertac; Atmaca, Gencay

doi:10.1007/978-3-319-93157-9_1

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…It is known that the finite element method is widely used in academic studies. With the finite element method, [23][24][25][26][27][28] studies were used in the modeling and analysis stages. In order to comparatively investigate the effect of molybdenum profile usage on modal parameters, a steel structure model consisting of steel columns and a steelmolybdenum structure model consisting of molybdenum columns were created.…”

Section: Methodsmentioning

confidence: 99%

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Çelik Bina Modellerinin Kolonlarında Molibden Profil Kullanımının Modal Parametrelere Etkisi

GÜNDAY

2023

Turkish Journal of Science and Technology

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From past to present, building designs and materials used are developing. Especially against the destructive effects of ground movements and free vibrations on structures, many structural system designs and composite structure designs have been developed. The purpose of the composite structure design is to choose different types of materials according to the structural load-bearing system stress, in short, to choose the most advantageous material type according to the cross-sectional stresses or to eliminate the negative aspects of one material with the positive aspects of another material. It is a known fact that the dynamic performance of steel structure carrier systems is high under the influence of ground movements and free vibrations. However, in cases where the section geometry cannot be changed due to architectural concerns due to architectural design difficulties, there are cases where the rigidity of the structure is not sufficient. In such cases, profiles made of different materials other than steel can be used in order to increase the rigidity of the structure, especially in the columns, which are a very important component of the structural load-bearing elements. Therefore, in this study, the effect of using molybdenum profile instead of steel profile on modal parameters in model steel structure columns was investigated. In the light of the information obtained, a decrease of approximately 23.72 percent was observed in the period value in the 1st free vibration mode of the steel-molybdenum structure model. Thus, it is understood that the rigidity of the model steel structure system increases. In cases where it is not possible to change the architectural design in steel structures, it is recommended to use column profiles as molybdenum profiles instead of steel profiles in order to provide the necessary rigidity and increase rigidity.

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Section: Methodsmentioning

confidence: 99%

“…As a result of resonance, structures are exposed to great forces and thus to great damage. [2]. It is a known fact that environmental vibrations can cause structures to resonance.…”

Section: Introductionmentioning

confidence: 99%

Çelik Bina Modellerinin Kolonlarında Molibden Profil Kullanımının Modal Parametrelere Etkisi

GÜNDAY

2023

Turkish Journal of Science and Technology

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“…Currently, seismic isolation at the base is considered one of the most adequate solutions to resist seismic effects and is increasingly used in the seismic design of structures. [1][2][3][4][5]. Seismic isolation involves extending the principal periods of structures, away from the range of dominant earthquake periods and thus reducing the seismic energy transmitted to the structure.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Non-Linear Dynamic Behaviour of Different Seismic Isolation Systems

Sabiha

Bennacer

Nassim

2023

AEF

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To mitigate the effect of earthquake on the structure, the base isolation technique is the best alternative as a seismic protection system. In this research, a two-degree-of-freedom (2DOF) equivalent model is modelled based on a real eight-level reinforced concrete structure damaged by the Boumerdes earthquake in 2003 is presented. The basic isolation systems considered are four models namely: the first system is a high damping isolator (HDBR), the second system is the friction pendulum isolator (FPS). The third model of the base isolation system is a non-linear model with two horizontal and rotational stiffness springs (SHRS), and finally the last model presents a bilinear spring (SB). The isolators are designed according to the UBC-97 code. Earthquake recordings from Dar-El-Beida of the 2003 Boumerdes earthquake were used as seismic load. A dynamic analysis of the comparative temporal responses of the structure was performed by comparing its dynamic behaviour with that of the fixed base structure. The results obtained reveal a reduction in base shear, stage drift and stage acceleration and an increase in displacement and time period for the structure isolated at the base. The results are presented in tables and graphs.

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