Kaya Kütlesi Poisson Oranı ve Elastisite Modulü Değerlerinin Tünel Etrafındaki Plastik Zon Sınırları üzerinde Etkileri

Yıl 2019, Sayı: 16, 15 - 23, 22.06.2019

Eren Kömürlü Serhat Demir

Öz

Bu çalışmada kaya kütlesi Poisson oranı ve Elastisite Modulü değerlerinin izotrop, homojen

ve elastik ortamlarda kazılan tünellerin etrafında oluşan plastik zon üzerindeki etkileri sonlu

elemanlar analizleri ile numerik olarak incelenmiştir. Farklı arazi gerilmesi (birincil gerilme)

dağılımı koşullarında Poisson oranı artışı ile plastik zon sınırlarında daralma olduğu belirlenmiştir.

Benzer şekilde, kaya kütlesinin elastisite modulü değerleri artışı ile az olsa da plastik zon

sınırlarında daralma görülmüştür. Plastik zon kestirimlerinde kaya kütlelerinin Poisson oranı

değerlerinin ihmal edilmeyecek düzeyde sonuçları etkilediği değerlendirilmiştir.

Anahtar Kelimeler

Tünellerde duraylılık, Tünel etrafında yenilme bölgesi, Plastik zon, Poisson oranı, Elastisite modulü

Kaynakça

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