Variation of the coefficient of lateral earth pressure with deformation for cohesionless backfills
8th International Conference on Physical Modelling in Geotechnics, ICPMG 2014, Perth, Avustralya, 14 - 17 Ocak 2014, cilt.2, ss.905-910, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 2
- Doi Numarası: 10.1201/b16200-127
- Basıldığı Şehir: Perth
- Basıldığı Ülke: Avustralya
- Sayfa Sayıları: ss.905-910
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Correct determination of lateral earth pressures has a significant role on design of various geotechnical structures. Especially from the perspective of performance based design, it is essential to calculate the variation of lateral earth pressure coefficient with wall displacement and deformation. For this purpose, a physical model study is being conducted to find the parameters that influence the magnitude and distribution of lateral earth pressures acting on geotechnical structures retaining cohesionless backfills. For evaluating and quantifying these parameters, a 1 g physical model consisting of a vertical wall retaining horizontal backfill has been developed and manufactured. The physical model allows the researchers to monitor the variations in lateral earth pressure with wall displacement. Furthermore, the Particle Image Velocimetry (PIV) method is used to observe the deformation and to detect the shear planes associated with retaining wall model failure. Comparing the measured displacements, loads and stresses with the identified shear planes, the influence of soil density on the failure surface geometry is investigated. © 2014 Taylor & Francis Group.