Characterization of active failure wedge for cohesionless soils
16th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2015, Edinburgh, İngiltere, 13 - 17 Eylül 2015, cilt.6, ss.3135-3140, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 6
- Basıldığı Şehir: Edinburgh
- Basıldığı Ülke: İngiltere
- Sayfa Sayıları: ss.3135-3140
- Boğaziçi Üniversitesi Adresli: Evet
Özet
The goal of this study is to evaluate and quantify the influence of dilatancy angle on active failure surface geometry. For this purpose, a small scale physical retaining wall model is designed. Model retaining wall tests are conducted to active failure at lg with backfills that have different densities. Tests are analyzed using Particle Image Velocimetry (PIV) and resulting active failure wedges are identified. Moreover, peak dilatancy angles of model backfills are calculated using the equation proposed by Cinicioglu and Abadkon (2014). It is noted that active failure surface geometries are dependent on the magnitude of dilatancy angles. Quantifying the results, a 2nd order parabolic function is developed to estimate active failure surface geometry using the knowledge of friction angle, dilatancy angle, and problem geometry. Accuracy of the proposed equation is evaluated by comparing failure surfaces estimated using the equation with experimentally identified failure surfaces.