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Dergiler / Gazi University Journal of Science / 2026 / Volume: 39 Issue: 2

Kumlu Zeminler Üzerine Yerleştirilmiş Geocell ile Güçlendirilmiş Temellerin Performansına En Boy Oranının Etkisi

Influence of Aspect Ratio on the Performance of Geocell-Reinforced Footings in Sandy Soils

Ayhan Gürbüz(GAZI UNIVERSITY)0000-0002-0459-7129
Kaan Yünkül(TOKAT GAZİOSMANPAŞA ÜNİVERSİTESİ)0000-0003-1264-237X
Sarper Demirdogen(Kansas University)0000-0001-8576-0807
Hüseyin Kalkan(GAZI UNIVERSITY)0000-0003-2561-3738
Sayfa
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Yayın Tarihi
2026-06-01
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Yapay Zeka Hızlı Bakış & Çıkarımlar

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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

İyileşme faktörlerinin 1.12 ile 2.56 arasında değiştiği, en yüksek iyileşmenin kare temellerde elde edildiği ve rölatif sıkılığın artışı ile birlikte iyileşme faktörü değerlerinin artış gösterdiği gözlemlenmiştir.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:Bu çalışmada, temelin en-boy oranının ve zemin rölatif sıkılığının, kum zeminler üzerine yerleştirilen hem güçlendirilmemiş hem de geocell ile güçlendirilmiş temellerin nihai taşıma gücü, şekil faktörü, iyileştirme faktörü ve yenilme mekanizması üzerindeki etkisini araştırmaktadır.
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Temel Bulgular & Veri:Bu kapsamda, fiziksel model deneyleriyle doğrulanan toplam 36 adet kapsamlı üç boyutlu sonlu elemanlar analizi gerçekleştirilmiştir.
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Sonuç & Katkı:İyileşme faktörlerinin 1.12 ile 2.56 arasında değiştiği, en yüksek iyileşmenin kare temellerde elde edildiği ve rölatif sıkılığın artışı ile birlikte iyileşme faktörü değerlerinin artış gösterdiği gözlemlenmiştir.
🔬Tür:Modelleme & Sayısal Simülasyon
📍Kapsam:36 adet
⚙️Değişkenler:Geocell · Geosynthetic · Aspect ratio

Özet

Bu çalışmada, temelin en-boy oranının ve zemin rölatif sıkılığının, kum zeminler üzerine yerleştirilen hem güçlendirilmemiş hem de geocell ile güçlendirilmiş temellerin nihai taşıma gücü, şekil faktörü, iyileştirme faktörü ve yenilme mekanizması üzerindeki etkisini araştırmaktadır. Bu kapsamda, fiziksel model deneyleriyle doğrulanan toplam 36 adet kapsamlı üç boyutlu sonlu elemanlar analizi gerçekleştirilmiştir. Analizler, en-boy oranı 1 ile 10 arasında değişen temeller ile gevşek ve sıkı kum koşulları için değerlendirilmiştir. Elde edilen sonuçlar, geocell donatısının temel gerilmelerini, nihai taşıma kapasitelerini, gerilme-deplasman oranı eğrilerinin rijitliğini ve şekil faktörü değerlerini artırarak temel performansını önemli ölçüde iyileştirdiğini göstermiştir. İyileşme faktörlerinin 1.12 ile 2.56 arasında değiştiği, en yüksek iyileşmenin kare temellerde elde edildiği ve rölatif sıkılığın artışı ile birlikte iyileşme faktörü değerlerinin artış gösterdiği gözlemlenmiştir. Ayrıca, güçlendirilmemiş temellerde maksimum şekil faktörünün en-boy oranının 2’ye eşit olduğu durumda görülürken, geocell ile güçlendirilme sonucunda bu pik değer en-boy oranı 1’e kaymıştır. Yapılan çalışmadan elde edilen bulgular, sığ temelin en-boy oranının ve zeminin rölatif sıkılığın geocell ile güçlendirilmiş temellerin performansı üzerindeki önemli etkisini vurgulayarak, pratik uygulamalarda temel geometrisi ve donatı tasarımının optimize edilmesi için değerli rehberlik sağlamaktadır.

Abstract

The aspect ratio of the shallow footing is a key parameter affecting the bearing capacity performances. However, the recommendations of previous studies exhibit notable inconsistencies among themselves for the unreinforced condition, and no numerical study in the literature has investigated the effect of aspect ratio under geocell-reinforced condition. This pioneer study investigates the influence of footing aspect ratio and soil relative density on the ultimate bearing capacity, shape factor, improvement factor, and failure mechanism of unreinforced and geocell-reinforced footings resting on sandy soils. A total of 36 rigorous three-dimensional finite element analyses were performed and validated against physical model tests. The analyses considered footings with aspect ratios ranging from 1 to 10 placed on loose and dense sands. The results showed that geocell reinforcement substantially improves footing performance by increasing bearing pressures, ultimate bearing capacities, stiffness of the footing pressure versus footing settlement ratio curves and shape factor values. Improvement factors were observed to lie between 1.12 and 2.56, with square footings showing the maximum improvement, and the magnitude of improvement increasing as the relative density increased. Furthermore, for unreinforced footings, the maximum shape factor occurred at aspect ratio of 2, whereas in geocell-reinforced conditions, the peak shifted to aspect ratio of 1. The shape factor values also increased with increasing relative density. Moreover, it was observed that the aspect ratio influences both the failure surface geometry and reinforcement mechanism of geocell.

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Bu Makaleye Atıf Yap

Gürbüz, A., Yünkül, K., Demirdogen, S., Kalkan, H. (2026). Kumlu Zeminler Üzerine Yerleştirilmiş Geocell ile Güçlendirilmiş Temellerin Performansına En Boy Oranının Etkisi. Gazi University Journal of Science, Volume: 39 Issue: 2. https://doi.org/10.35378/gujs.1843545

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