Farklı İstinat Duvar Tiplerinde Aktif Toprak Basınçlarının Sayısal Analizi

Öz

Dayanma yapılarının tasarımında yatay toprak basıncı dağılımı önem arz etmektedir. Birçok çalışmada, dayanma yapısına etkiyen aktif toprak basınç dağılımı nonlineer olarak kabul edilir. Toprak basınç dağılışı ile ilgili çok sayıda çalışma olmasına karşın, Duvar boyutlarının yatay toprak basıncı dağılışı üzerine etkilerini irdeleyen az sayıda çalışma bulunmaktadır. Bu çalışmada, duvar şeklinin aktif yanal toprak basınç dağılımı ve aktif kırılma yüzeyleri üzerine etkisi incelenmiştir. Bu nedenle çeşitli tip dayanma duvarlarına gelen yanal toprak basınç dağılışları ve oluşturdukları kırılma yüzeyleri numerik olarak irdelenmiştir. Yapılan çalışma kapsamında, çeşitli eğimlerdeki ağırlık tipi dayanma duvarları, farklı topuk uzunlukları ve eğime sahip ters T biçimli dayanma duvarları göz önüne alınmıştır. Yapılan çalışma sonucunda yanal toprak basınç dağılışının duvar tipine göre değiştiği belirlenmiştir. Buna ek olarak duvar eğimi ve topuk uzunluğunun kırılma yüzeyleri ve yanal toprak basınç dağılışı üzerinde etkili olduğu görülmüştür. 

Anahtar Kelimeler

• kırılma yüzeyi yatay toprak basınç dağılışı,,uzun topuk,kısa topuk

Numerical Analysis of Active Earth Pressures on Various Types of Retaining Walls

Öz

Lateral earth pressure distribution is crucial in retaining structure design. In most studies, active earth pressure distribution acting on the retaining structure is supposed as nonlinear. Despite there are many studies about earth pressure distribution, there are limited number of studies considering effect of wall geometry on lateral earth pressure distribution. In this study, it is aimed to examine effect of wall geometry on active failure surfaces and lateral earth pressure distribution. Thus, active failure surface and active lateral earth pressure distribution of various types of retaining wall were examined numerically. Within scope of the analysis a gravity retaining wall with various inclinations, inverted T type cantilever retaining wall and gravity wall with various heel lengths were considered. The effect of wall inclination and heel length on failure mechanism and lateral earth pressure distribution was studied. As a result of the study it is shown that lateral earth pressure distribution varies based on wall type. Additionally, short heel and long heel cases are effective on earth pressure distribution. 

Anahtar Kelimeler

• failure surface,lateral earth pressure distribution,long heel,short heel

Kaynakça

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