A Winkler-based model for inelastic response of soil–structure systems with embedded foundation considering kinematic and inertial interaction effects

Asadi-Ghoozhdi, Hamid; Attarnejad, Reza

doi:10.1016/j.istruc.2020.09.009

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…Zeminin esnek kabul edilmesi ve temeldeki dönme deplasman artışını açıklamaktadır. Çalışmada rijit temelli çözüm ile elde edilen doğal periyot yardımıyla ZYE'li deplasmanın hesaplanabilmesi için bir bağıntı elde edilmiştir [12]. Düzlem çerçevelerde ZYE'nin direkt yöntemle incelendiği bir diğer çalışmada zeminin kayma kirişi olarak modellenmesi ile kabuk elemanlarla modellenmesi durumuna yakın sonuçlar elde edilmiştir.…”

Section: Literatür öZetiunclassified

Betonarme Binalarda Zemin-Yapı Etkileşiminin Sismik Tasarım Parametrelerine Etkileri

ÖZGÜR¹,

Bozdoğan²

2021

El-Cezeri Fen Ve Mühendislik Dergisi

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Yapıların deprem davranışı birbirlerine bağlı olan zemin, temel ve yapı alt-sistemleri arasındaki etkileşim nedeniyle değişebilmektedir. Genellikle temel, yapının bir bölümü olarak kabul edilir ve bu etkileşim zemin-yapı etkileşimi (ZYE) olarak anılır. ZYE, rijit (ankastre) temel yaklaşımından farklı olarak esnek zemin-temel sistemi, temel sönümü ve yapıya iletilen yer hareketinin filtrelenmesi gibi faktörleri kapsar. Esnek zemin-temel sistemi ve temel sönümüne bağlı olarak sırasıyla ortak sistem periyodunun uzaması ve sönüm oranının artması eylemsizlik etkileşiminin sonuçlarıdır. Öte yandan, serbest saha hareketinin temel girdi hareketinden farklılaşması kinematik etkileşim olarak değerlendirilir. Bu çalışmanın amacı esnek zemin-temel sistemi nedeniyle bina periyodunda gerçekleşen uzamayı farklı yapı sistemlerine sahip binalar ve yerel zemin sınıflarında ortaya koymaktır. Ayrıca periyoda bağlı olan spektral ivme ve deplasman, taban kesme kuvveti ve tepe deplasmanı gibi bazı sismik tasarım parametrelerinin değişimi de gösterilmiştir. ZYE ile elde edilen sismik parametreler, ZYE etkilerinin zayıf zeminler üzerinde yer alan rijit binalar için daha belirgin olduğunu ortaya koymaktadır.

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Section: Literatür öZetiunclassified

Betonarme Binalarda Zemin-Yapı Etkileşiminin Sismik Tasarım Parametrelerine Etkileri

ÖZGÜR¹,

Bozdoğan²

2021

El-Cezeri Fen Ve Mühendislik Dergisi

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“…Hamid AG el al. [9] conducts a parametric study on the ductility and displacement demands of structures with embedded foundations in relation to nonlinear soilstructure interaction (SSI). The beam on Winkler foundation concept is used to simulate interactions between two objects.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Earthquake Response of 3-DOF Structure with Substructures by Centrifuge Test

2024

Teh. vjesn.

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In recent years, strong earthquakes have caused a lot of damage around the world. In order to prevent such damage, proper evaluation of the seismic performance of buildings is absolutely necessary. However, the current analysis procedure in seismic design assumes fixed boundary conditions for the foundation and neglects the influence of the substructure on the superstructure. Previous studies have shown that the type of foundation affects structural responses during earthquakes. However, most of these studies have focused on single-degree-of-freedom (SDOF) structures and have not considered variations in response according to different substructure types. This study aims to investigate the effects of different substructures on ground motion and corresponding responses of the superstructure. Centrifugal simulations were conducted on a multi-degree-of-freedom (MDOF) superstructure, including a Half-embedded with Pile foundation, a fixed deep basement, and a Shallow foundation. The experimental results indicate that in the case of a half-substructure with a pile foundation, there was no significant difference between free field motion and foundation motion due to the pile foundation. However, in the case of a fixed deep basement, the embedment effect was most pronounced, especially in the short period range of 0.1 s to 0.5 s in the response spectrum. This resulted in a notable reduction in the spectrum. The analysis of the response spectra of foundation motion and free field motion revealed that the reduction effect was absent in the half-embedded with a pile foundation, but it was prominent in the fixed deep basement. Notably, the ratio of response spectrum increased in the fundamental period of the substructure. In the case of a shallow foundation, it was observed that foundation motion experienced larger amplification compared to free field motion. Shallow foundations have a relatively low stiffness of the substructure and are influenced by the inertial forces of the superstructure. Additionally, this tendency is believed to be more prominent due to the imperfectly fixed boundary conditions of shallow foundations to the ground. However, apart from the increase in foundation motion, the response of the superstructure was not proportional to it. These results contribute to a better understanding of the changes in seismic load and the response of multi-degree-of-freedom superstructures according to the type of substructure. The seismic design of the superstructure is safer and more reasonable when considering the effects of the type of substructure.

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The modified Vlasov model on a nonhomogeneous and nonlinear soil layer

Isbuga

Cerezci²,

Aşık³

2022

Computers and Geotechnics

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A Winkler-based model for inelastic response of soil–structure systems with embedded foundation considering kinematic and inertial interaction effects

Cited by 5 publications

References 36 publications

Betonarme Binalarda Zemin-Yapı Etkileşiminin Sismik Tasarım Parametrelerine Etkileri

Betonarme Binalarda Zemin-Yapı Etkileşiminin Sismik Tasarım Parametrelerine Etkileri

Dynamic Earthquake Response of 3-DOF Structure with Substructures by Centrifuge Test

The modified Vlasov model on a nonhomogeneous and nonlinear soil layer

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