MODELLING OF PILE LOAD TEST IN DIFFERENT SOIL MODELS WITH FINITE ELEMENT METHOD AND COMPARISON WITH FIELD TEST RESULTS

Öz

   In this study, static pile load test was conducted in the planned site in order to evaluate the results and redesign the project in a pile foundation application that were designed for 8-storey residential project constructed in Ceyhan-Adana by TOKI (Provision of Social Housing in Turkey). The design load of the single pile was corrected according to the results obtained from the static pile load test. The static pile load test was modelled in the concept of this study with using 2D-FEM analysis and two common soil models for a clayey soil under saturated soil condition and their results were compared with field test results. Plaxis-2D commercial software package program that is commonly used by geotechnical engineers in all over the world was used for this study. The selected soil models in order to propose the pile load test in FEM analysis are Hardening Soil Model and Mohr Coulomb soil model. When field test results and numerical models’ results are compared with each other, it was observed that Hardening Soil Model gives more accurate results than Mohr Coulomb soil model for this study. As a result that the ability of static pile load test modelling with 2D-FEM analysis were presented with comparison results in this study.

Anahtar Kelimeler

• static pile load test,finite element method,hardening soil model,mohr coulomb soil model,pile foundation

STATİK KAZIK YÜKLEME DENEYİNİN FARKLI ZEMİN MODELLERİNDE SONLU ELEMANLAR YÖNTEMİ İLE MODELLENMESİ VE ARAZİ BULGULARIYLA KARŞILAŞTIRILMASI

Öz

   Bu çalışmada, TOKİ tarafından Adana’nın Ceyhan ilçesinde yapılmış 8 katlı (B+Z+6K) konut projesi kapsamında projelendirilmiş fore kazık zemin iyileştirme uygulamasında, tasarım yükünün kontrol edilmesi maksadıyla, projenin yapılması planlanmış arazide statik kazık yükleme deney sonuçları elde edilmiştir. Bu deney sonucunda elde edilmiş veriler ışığında tekil kazığın tasarım yükü yeniden belirlenmiştir. İki boyutlu düzlemde sonlu elemanlar yöntemiyle ve yaygın olarak kullanılan iki farklı zemin modeli kullanılarak, yeraltı su seviyesinin yüzeye yakın olduğu killi bir zeminde statik kazık yükleme deneyi bu çalışma kapsamında modellenmiş ve sonuçlar gerçek arazi deney verileriyle karşılaştırılmıştır. Bu çalışma kapsamında, geoteknik mühendisleri tarafından dünyada yaygın olarak kullanılan Plaxis-2D paket programı kullanılmıştır. Sonlu elemanlarda statik kazık yükleme deneyini modellemek için kullanılmış zemin modelleri olarak; Pekleşen Zemin Modeli ve Mohr Coulomb zemin modeli seçilmiştir. Arazi deneyi bulguları ve sayısal analiz verileri karşılaştırıldığında; Pekleşen zemin modelinin, Mohr Coulomb zemin modelinden daha doğru sonuçlar verdiği gözlemlenmiştir. Sonuç olarak; sonlu elemanlar yöntemiyle statik kazık yükleme deneyinin modellenebileceği veriler ışığında sunulmuştur.

Anahtar Kelimeler

• statik kazık yükleme deneyi,sonlu elemanlar yöntemi,pekleşen zemin modeli,mohr coulomb zemin modeli,kazıklı temeller

Kaynakça

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