Experimental Investigation on Foundation Behaviour and Optimum Pile Spacing in Cohesionless Soil

Öz

In this study, 40 model test were conducted with cohesionless soil in two different relative density of 50 % and 85 %. The model tests were categorized into 3 different configurations as only raft, only pile and piled raft foundation. Also the model tests of the piled rafts were configured as shallow and surface. During the tests vertical loads were incrementally applied. The results demonstrate that the optimum pile spacing is smaller in the surface case compared to the shallow case. The study demonstrated experimentally that optimum pile spacing is to be between 1.5D to 4D, for 50 % relative density, whereas the optimum pile spacing for 85 % relative density is 4.5D to 6D.

Anahtar Kelimeler

• Yapı zemin etkileşimi
• kazıklı radye temel
• optimum kazık aralığı
• kazık tasarım parametreleri
• model test
• Soil-Structure Interaction
• Piled Raft Foundation
• Optimum Pile Spacing
• Pile Designing Parameters
• Model Test

Kohezyonsuz Zeminde Kazık Aralığının Belirlenmesi ve Temel Davranışının Deneysel İncelenmesi

Öz

Bu çalışmada, %50 ve %85 olmak üzere, iki farklı rölatif sıkılığa sahip kum zeminde 40 adet model test deneyi yapılmıştır. Model temel sistemleri; uygulanan yükün, sadece radyeye, sadece kazıklara ve kazıklı radye temel sistemine taşıtıldığı durumlar dikkate alınarak oluşturulmuştur. Kazıklı radye temeller radyenin zemine gömülü olduğu ve zemine gömülü olmadığı iki farklı durum için irdelenmiştir. Eksenel statik artımsal yükler altında analiz edilen modellerde; optimum kazık aralığının radyenin gömülü olmadığı durumda daha küçük, gömülü olduğu durumda ise daha büyük S/D oranına sahip olduğu belirlenmiştir. Optimum kazık aralığı, orta sıkı zeminde, 1.5D ile 4D, çok sıkı zeminde 4.5D ile 6D arasında bulunmuştur.

Anahtar Kelimeler

• Yapı zemin etkileşimi
• kazıklı radye temel
• optimum kazık aralığı
• kazık tasarım parametreleri
• model test
• Soil-Structure Interaction
• Piled Raft Foundation
• Optimum Pile Spacing
• Pile Designing Parameters
• Model Test

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