Kum Zemine Oturan Model Yüzeysel Temelin Yük-Oturma Davranışının Deneysel ve Nümerik Olarak İncelenmesi

Yıl 2021, , 686 - 703, 31.08.2021

Bayram Ateş , Erol Şadoğlu

https://doi.org/10.18185/erzifbed.862650

Öz

Teknolojinin gelişmesi insanoğluna daha geniş, daha ağır ve daha karmaşık yapılar inşa etme fırsatı vermiştir. Artan ve karmaşık hale gelen yükleri zemine aktarma problemi ile yüzleşen geoteknik mühendisleri için temellerin yük-oturma davranışını anlamak güvenli temel tasarımı için kaçınılmaz hale gelmiştir. Bu çalışmada yüzeysel temellerin yük-oturma ve taşıma davranışının belirlenmesi amaçlanmıştır. Bu amaçla bir deney düzeneği oluşturulmuş ve farklı rölatif sıkılıklara sahip granüler zemine oturan küçük ölçekli model temeller ile yükleme deneyleri gerçekleştirilmiştir. Ayrıca; fiziksel model testler için deney programına bağlı kalarak sonlu elemanlar yöntemine dayanan ABAQUS/CAE programı ile sayısal analizler yapılmış, elde edilen sonuçların deney sonuçları ile olan uyumu araştırılmıştır. Yapılan çalışmalar sonucunda rölatif sıkılığın, yüzeysel temellerin yük-oturma davranışı üzerinde etkili bir parametre olduğu görülmüştür. Sonuçlar maliyetli ve zaman alıcı saha deneyleri yapmadan kumlu zemine oturan yüzeysel temellerin taşıma ve yük-oturma davranışlarının ön değerlendirmesi için bir referans görevi görebilir.

Anahtar Kelimeler

Yüzeysel temel, 1g fiziksel model deney, nümerik analiz, yük-oturma davranışı

Experimental and Numerical Investigation of Load-Settlement Behaviour to Model Shallow Foundation rest on Sandy Soil

Öz

Improvement of technology gives the change to humankind to build larger, heavier and more complex structures. For geotechnical engineers, faced with transferring the loads that is more complex and increasing, determination of the load-settlement behaviour has become inevitable for the reliable foundation design. In this study, it is aimed to determinate the bearing and load-settlement behavior of the shallow foundations. For this purpose, a test setup has been formed and loading tests have been carried out by means of small scale model foundation rest on the granular soil with the different relative densities situations. Additionally, numerical analyses, adhering to the experimental program for 1g physical model tests, have been carried out with finite element based software ABAQUS/CAE and the obtained results have been compared with the experimental results. As a result of the study it is shown that the relative density is a very effective parameter for the load-settlement behavior of the shallow foundations. The results can serve as a reference for the preliminary assessment of bearing and load-settlement behavior of shallow foundation in sandy soils without conducting expensive and time-consuming field trials.

Anahtar Kelimeler

Shallow foundation, 1g physical model test, numerical analysis, load-settlement behavior

Kaynakça

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