A Comparative Study on Effectiveness of Using Horasan Mortar as a Pure Friction Sliding Interface Material

Kasimzade, Azer A.; Dushimimana, Aloys; Tuhta, Sertac; Atmaca, G.; Günday, Furkan; Abrar, Obaidullah

doi:10.24018/ejers.2019.4.2.1166

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…The input parameters characterizing the studied structural models, such as superstructure mass, were calculated based on the dimensions of the models. The stiffness was calculated using finite element method (FEM) [39]. The methodology used in this study is summarized in Fig.…”

Section: Structural Model and Optimization Proceduresmentioning

confidence: 99%

Effects of Building Height and Seismic Load on the Optimal Performance of Base Isolation System

Dushimimana

Mbereyaho

et al. 2023

Arab J Sci Eng

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Seismic isolation has been widely accepted as one of the techniques that can be used to protect structures during earthquake ground motions. However, some challenges still exist such as the optimal control of excessive isolator shear strains imposed by some ground motions. The main purpose of this study was to assess the effects of building height variation and earthquake ground motion type on the optimal performance of the seismic isolation using lead core rubber bearing (LCRB). Nonlinear time history analysis for building models of various storeys isolated by LCRB and exposed to different real earthquakes was performed. To achieve this, the equations governing the motion of the isolated three different building models were presented, and an approach for solving the equations while taking into consideration of the optimized mechanical properties of the LCRB was developed. The LCRB performance was measured in terms of elastomer shear strains, derived after an optimal criterion leading to reliable substructure and superstructure responses was reached. The results showed that the combined effects of the earthquake type and building height significantly affect the substructure responses (maximum isolator displacement, energy dissipation capacity, maximum isolator force) and the superstructure responses (storey shear forces, storey drifts, floor displacements, and floor accelerations), which in some cases lead to a need for adding a fluid damper. In this regard, an attempt to couple the LCRB with nonlinear fluid viscous damper was made, and the performance of the hybrid was assessed. It was generally found that the hybrid can positively improve the substructure responses, thereby reducing the unwanted large elastomer shear strains without adversely affecting the superstructure responses.

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Section: Structural Model and Optimization Proceduresmentioning

confidence: 99%