Tam Ölçekli Yanal Yükleme Testinin Sayısal Modellemesi

Öz

Limanlar, ulusal ve uluslararası deniz taşımacılığında çok önemli yapılardır. Aynı zamanda bu yapılar, nakliye ve dağıtım hizmetleri sağlayarak, ülke ekonomisi ve ticaret kapasitesi üzerinde de kritik bir konumdadır. Liman yapısı tasarımında, yapının hizmet ömrü boyunca stabilitesini ve dayanımını mufaza etmesi oldukça önemlidir. Bu tip yapıların tasarımında, rüzgar ve dalga yükleri ile gemi yanaşması ve bağlanması sırasında ortaya çıkan etkilerin neden olduğu yanal yükler, dikey yüklere kıyasla çok daha önemli olabilmektedir. Liman yapısı temel sisteminin tasarımı ve performansı, hizmet yükleri dikkate alınarak tam ölçekli saha testleri ile araştırılmalıdır. Bu çalışmanın amacı da, Akdeniz'de Mersin Uluslararası Liman İnşaatı bölgesinde tam ölçekli saha yükleme testleri ile çelik boru kazıklarının yanal yük altındaki performansının incelenmesidir. Tekil bir test kazığı, tam ölçekli yanal yükleme düzeneği ile 4 yükleme-boşaltma çevrimi altında, proje yükünün 2 katına kadar yüklenmiştir. Ayrıca gerçek yanal yük-deplasman davranışını simüle etmek için Plaxis 3D sonlu elemanlar yazılımı kullanılmıştır. Sayısal modelden elde edilen analiz sonuçlarının, yükleme testinden elde edilen kazık yanal yük-deplasman davranışını başarılı bir şekilde yansıttığı gözlemlenmiştir

Anahtar Kelimeler

• Tam Ölçekli Deney
• Yanal Yüklü Kazık
• Plaxis 3D
• Liman İnşaatı

Numerical Modelling of Full-Scale Lateral Load Test

Abstract

Ports are very important structures at the national and international sea transportation. These structures are also in a critical position on economy and commerce capacity by providing shipping and distribution services. It is very important to design a port structure, considering its stability and resistance along its service time. In the design of this type of structure, the lateral loads caused by during ship berthing, wind and wave loads etc. can be more important compared with vertical loads. The design and the performance of a port structure foundation should be investigated by full scale field tests considering the service loads. The aim of this study is to investigate the performance of the steel pipe pile under lateral load by full scale in-situ loading tests at Mersin International Port Construction area in the Mediterranean Sea. Full scale pile lateral loading test (PLLT) on a single offshore pile has been conducted at the project site and the test pile has been loaded up to 2 times the service load with 4 loading-unloading cycles. In addition, a numerical analysis has been performed to simulate the real lateral load-deflection behavior by using Plaxis 3D finite element software. It has been observed that, the analysis results obtained from the numerical model has been reflected the test pile lateral load-displacement behavior with good convergence.

Keywords

• Plaxis 3D
• Port Construction
• Full Scale Test
• Laterally Loaded Pile

Kaynakça

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