Modelling Study on the Geotextile, Geogrid and Steel Strip Reinforced Slopes

Öz

Changing the natural conditions of soil creates unexpected stress increments in slope stability projects, which are required high amount of soil excavation near the highways and railways or braced cut systems. Some safety problems can occur during this application under different loading cases. In addition, slope stability design requires economical solutions. Slope-supporting structures should be designed with most effective solution according to these signified requirements. A slope stability problem considering deep excavations in front of the reinforced soils are studied within this study in all its parts, after an extensive review of the literature. Geotextile (GT), geogrid (GG) and steel strip (SS) reinforcements are used to increase the stability conditions of slope during both experimental procedure and modelling process with Plaxis software. Each reinforcement type provided the bearing capacity enhancement and showed that unique displacement behavior. Therefore, most effective reinforcement member can be chosen in design procedure and construction phase in the site according to the bearing capacity and displacement requirements according to presented values.

Anahtar Kelimeler

• Slope stability,Reinforced slope,Geotextile,Geogrid,-Steel strip

Geotekstil, Geogrid ve Çelik Şerit Donatılı Şevlerde Modelleme Çalışması

Öz

Zeminin doğal koşullarının değişmesi, yüksek miktarda hafriyat gerektiren otoyol ve demiryolu kenarları veya destekli kazılardaki şev stabilitesi projelerinde beklenmedik gerilme artışlarına neden olmaktadır. Bu işlem sırasında farklı yükleme durumlarında bazı güvenlik sorunları oluşabilmektedir. Ek olarak, şev stabilitesi tasarımı ekonomik çözüm gerektirmektedir. Şev destek yapıları için bu önemli gereksinimler göz önünde bulundurularak en efektif tasarım yapılmalıdır. Bu çalışmada; kapsamlı bir literatür taramasının ardından, donatılı zemin yapısının ön kısmında yer alan derin kazılar dikkate alınarak şev stabilitesi problemi tüm yönleriyle incelenmiştir. Geotekstil (GT), geogrid (GG) ve çelik şerit (SS) donatılar, hem deney sürecinde hem de Plaxis yazılımı ile modelleme aşamasında şevin stabilite koşullarının arttırılması işleminde kullanılmıştır. Her donatı tipi zemin taşıma kapasitesi artışı sağlamış ve kendine has yer değiştirme davranışı göstermiştir. Dolayısıyla, sunulan değerlere göre taşıma kapasitesi ve yer değiştirme gereklilikleri doğrultusunda, tasarım işlemi ve sahadaki inşa sürecinde en efektif donatı elemanı seçilebilecektir.

Anahtar Kelimeler

• Şev stabilitesi,Donatılı şev,Geotekstil,Geogrid,Çelik şerit

Kaynakça

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