Analysis of the Spacing Effect in 1x2 Configured Group Helical Piles using Laboratory Model Tests

Yıl 2025, Cilt: 40 Sayı: 3, 521 - 530, 26.09.2025

Burak Tintaş , Murat Örnek

https://doi.org/10.21605/cukurovaumfd.1692961

Öz

Helical piles are increasingly popular systems in deep foundation applications. In this study, the effect of the distance between piles and the presence of helices on the load-bearing capacity under pressure in loose sand, within a group of helical piles arranged in a 1x2 configuration, was investigated using laboratory model tests, and the load-displacement curves were interpreted. In the experiments, the helix diameters and numbers were kept constant. The distance between the piles was increased from 200 mm to 700 mm, and load-displacement graphs were obtained for each interval. Piles with helix and without helix were interpreted among themselves while keeping the distance between the piles constant. To find the ultimate failure load from the load-displacement curves obtained from the test results, the %5D and %10D limit displacement criteria were applied. The results showed that the increase in the distance between the piles caused a decrease in load-bearing capacity, while the presence of the helix increased the load-bearing capacity.

Anahtar Kelimeler

Group Helical Pile , Bearing Capacity , Pile Spacing , Laboratory Tests

1x2 Dizilimli Grup Helisel Kazıklarda Mesafe Etkisinin Laboratuvar Model Deneyleriyle İncelenmesi

Öz

Helisel kazıklar derin temel uygulamalarında popülerliği gittikçe artan sistemlerdir. Bu çalışmada 1x2 diziliminde düzenlenmiş olan helisel kazık grubunda, kazıklar arası mesafenin ve kazıktaki helis varlığının, gevşek kum zeminde, basınç etkisi altında taşıma gücüne etkisi laboratuvar model deneyleri kullanılarak incelenmiş ve yük-deplasman eğrileri yorumlanmıştır. Deneylerde helis çapları ve sayısı sabit tutulmuştur. Kazıklar arası mesafe 200 mm’den 700 mm’ye kadar arttırılmış ve her aralık için yük deplasman grafikleri elde edilmiştir. Helisli ve helissiz kazıklar, kazıklar arası mesafe sabit tutularak kendi aralarında yorumlanmıştır. Deney sonuçlarından elde edilen yük-deplasman eğrilerinin nihai göçme yükünü bulmak için %5D ve %10D limit deplasman kriterleri uygulanmıştır. Sonuçlar, kazıklar arası mesafenin artmasının taşıma gücünde azalmaya sebep olduğunu, helis varlığının ise taşıma gücünü arttırdığını göstermiştir.

Anahtar Kelimeler

Grup Helisel Kazık , Taşıma Gücü , Kazıklar Arası Mesafe , Laboratuvar Deneyleri

Kaynakça

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