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Konsol Bir İstinat Duvarının Sismik Davranışı Üzerinde Dolgu Etkileşiminin Değerlendirilmesi Üzerine Parametrik Bir Çalışma

Konsol duvarların sismik davranışının bilinmesi, bu yapıların deprem bölgelerindeki başarılı tasarımını tesis etmek için önemli bir unsurdur. Bu çalışmada, konsol bir istinat duvarının sismik tepkisi üzerinde dolgu özellikleri değişiminin etkilerini incelemek için bir sonlu elemanlar yöntemi kullanılmıştır. Bu yöntemde zemin-yapı ve dolgu-duvar etkileşimleri dikkate alınmıştır. Dört farklı dolgu zemini koşulu dikkate alınarak, dolgu-konsol duvar-temel/zemin sisteminin dinamik analizleri zaman ortamında ANSYS programıyla gerçekleştirilmiştir. Yerdeğiştirme ve gerilmeler doğrusal olmayan analizlerle belirlenmiş ve dinamik davranışın dolgu özelliklerine oldukça duyarlı olduğu ortaya konmuştur.

Anahtar Kelimeler:

Zemin-yapı etkileşimi, Sismik davranış, Sonlu elemanlar metodu, Zaman geçmişi

A Parametric Study on Evaluation of Backfill Interaction on Seismic Response of a Cantilever Wall

Knowledge of the seismic behavior of cantilever retaining walls is an important component for their successful design in earthquake prone areas. In this study, a finite element procedure was used to investigate the effects of backfill soil properties variation on seismic response of a cantilever retaining wall. In this procedure, not only soil-structure interaction but also backfill-wall interaction was taken into consideration. Considering four different backfill soil conditions, the dynamic analyses of backfill-cantilever wall-soil/foundation system were carried out in time domain through ANSYS program. The magnitudes of lateral displacements and stresses were determined by performing non-linear time history analyses. As a result, based on the response amplification/reduction pattern observed on the lateral displacements and stresses, it is concluded that the dynamic behavior of cantilever walls is highly sensitive to the backfill characteristics.

Keywords:

Soil-structure interaction, Seismic response, Finite element method, Time history,

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