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Journals / Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi / 2026 / Cilt: 18

The groundwater position on the behavior of the fully-rough strip footings

Yeraltı suyunun konumunun, tamamen pürüzlü şerit temellerin davranışına etkisi

Kaan Yünkül(TOKAT GAZİOSMANPAŞA ÜNİVERSİTESİ)0000-0003-1264-237X
Pages
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Publication Date
2026-10-14
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

The FE analysis results demonstrated that qult and cw values, and stiffness of the σ-s responses increased with increasing dw/B ratios until reaching the dc/B value.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, a total of 98 comprehensive 3D parametric finite element (FE) analyses were carried out to investigate the effect of normalized water table depth (dw/B) and relative density (Dr) of the soil beneath the footing on the ultimate bearing capacity (qult), pressure-settlement (σ-s) response, correction coefficient (cw), critical failure surface depth ratio (dc/B), and failure mechanism of a fully-rough strip footing on sandy soil.
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Key Findings & Data:Seven different Dr values, ranging from 10% to 80% and thirteen different dw/B values, ranging from 0 to 2 as well as fully-dry condition, were preferred.
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Conclusion & Impact:The FE analysis results demonstrated that qult and cw values, and stiffness of the σ-s responses increased with increasing dw/B ratios until reaching the dc/B value.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Yeraltı suyu · Şerit temel · Nihai taşıma kapasitesi

Abstract

In this study, a total of 98 comprehensive 3D parametric finite element (FE) analyses were carried out to investigate the effect of normalized water table depth (dw/B) and relative density (Dr) of the soil beneath the footing on the ultimate bearing capacity (qult), pressure-settlement (σ-s) response, correction coefficient (cw), critical failure surface depth ratio (dc/B), and failure mechanism of a fully-rough strip footing on sandy soil. Seven different Dr values, ranging from 10% to 80% and thirteen different dw/B values, ranging from 0 to 2 as well as fully-dry condition, were preferred. The FE analysis results demonstrated that qult and cw values, and stiffness of the σ-s responses increased with increasing dw/B ratios until reaching the dc/B value. Beyond this threshold, the obtained values coincided with those corresponding to fully-dry condition. It was observed that groundwater position and the Dr of the soil significantly affected the geometry and dimension of the failure surface. Furthermore, new semi-empirical equations were proposed for predicting dc/B and cw values considering internal friction angle, dw/B, effective and saturated unit weight values, showing good agreement with the findings of the FE analyses.

Özet

Bu çalışmada, kumlu zeminde tamamen pürüzlü bir şerit temelde normalize edilmiş yeraltı su tablası derinliğinin (dw/B) ve zeminin rölatif sıkılığının (Dr); nihai taşıma kapasitesi (qult), basınç-oturma (σ-s) tepkisi, düzeltme katsayısı (cw), kritik yenilme yüzeyi derinlik oranı (dc/B) ve yenilme mekanizması üzerindeki etkisinin incelenmesi amacı ile 98 kapsamlı 3 boyutlu parametrik sonlu elemanlar (FE) analizi gerçekleştirilmiştir. Analizlerde %10 ile %80 arasında değişen yedi farklı Dr değeri ve 0 ile 2 arasında değişen on üç farklı dw/B değerinin yanı sıra tamamen kuru koşullar da tercih edilmiştir. FE analiz sonuçları, dw/B oranının artmasıyla birlikte qult ve cw değerlerinin yanı sıra σ-s eğrilerinin rijitliğinin de arttığını ve bu artışın dc/B değerine ulaşıncaya kadar devam ettiğini göstermiştir. Bu eşik değerin ötesinde ise elde edilen değerler tamamen kuru koşullara karşılık gelen değerler ile örtüşmektedir. Yeraltı suyu pozisyonunun ve zeminin Dr değerinin, yenilme yüzeyinin geometrisini ve boyutunu önemli ölçüde etkilediği gözlemlenmiştir. Ayrıca, içsel sürtünme açısı, dw/B oranı ile zeminin efektif ve doygun birim hacim ağırlıklarını dikkate alan; FE analizlerinden elde edilen bulgularla yüksek uyum gösteren dc/B ve cw değerlerinin tahmini için yeni yarı-ampirik bağıntılar önerilmiştir.

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Cite This Article

Yünkül, K. (2026). The groundwater position on the behavior of the fully-rough strip footings. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 18. https://doi.org/10.28948/ngumuh.1961628

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