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Structural Engineering and Mechanics Volume 77, Number 1, January10 2021 , pages 37-46 DOI: https://doi.org/10.12989/sem.2021.77.1.037 |
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A simplified method for free vibration analysis of wall frames considering soil structure interaction |
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Dondu Kara, Kanat Burak Bozdogan and Erdinc Keskin
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| Abstract | ||
| In this study, a method for free vibration analysis of wall-frame systems built on weak soil is proposed. In the development of the method, the wall-frame system that constitutes the superstructure was modeled as flexural-shear beam. In the study, it is accepted that the soil layers are isotropic, homogeneous and elastic, and the waves are only vertical propagating shear waves. Based on this assumption, the soil layer below is modeled as an equivalent shear beam. Then the differential equation system that represented the behavior of the whole system was written for both regions in a separate way. Natural periods were obtained by solving the differential equations by employing boundary conditions. At the end of the study, two examples were solved and the suitability of the proposed method to the Finite Element Method was evaluated. | ||
| Key Words | ||
| soil structure interaction; wall frame; continuum model; free vibration; finite element method | ||
| Address | ||
| Dondu Kara and Erdinc Keskin: Department of Civil Engineering, Engineering Faculty, Kirklareli University,39000, Kirklareli , Turkey Kanat Burak Bozdogan: Department of Civil Engineering, Canakkale Onsekiz Mart University, 17020, Canakkale, Turkey | ||