Numerical analysis of reinforced soil-retaining wall structures with cohesive and granular backfills
Yükleniyor...
Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ICE Publishing
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The failure mechanisms of reinforced soil segmental walls with extensible reinforcements were studied by performing a numerical analysis using the finite element method. The numerical approach was first verified against the results of three instrumented full-scale structures reported in the literature. Finite element models with different combinations of reinforcement spacing, reinforcement length and backfill soil were analysed. The –c reduction method, which is a special shear strength parameter reduction technique, was applied to simulate the failure conditions. The results of –c reduction analysis were used to evaluate assumptions used in current design procedures for geosynthetic-reinforced soil walls. In particular, shear strains were used to identify failure surfaces. Interpretation of the results indicated that, for both granular and cohesive backfills, the potential failure surface gradually shifts to a direct sliding mode as the system approaches failure. As a result, under working loads the potential failure surface used in current design analysis is correct, but the failure plane of a geosynthetic-reinforced soil-retaining wall at failure approaches a direct sliding type or a bilinear plane, which starts from the toe of the wall with a very shallow slope.
Açıklama
Anahtar Kelimeler
Geosynthetics, Reinforced soil, Geotextile, Failure surface, Finite element analysis, Shear strains
Kaynak
Geosynthetics International
WoS Q Değeri
Scopus Q Değeri
Cilt
14
Sayı
6
Künye
Guler, E., Hamderi, M. & Demirkan, M. M. (2015). Numerical analysis of reinforced soil-retaining wall structures with cohesive and granular backfills. Geosynthetics International, 14 (6), 330–345.
