Unloading-reloading lines as a function of preconsolidation pressure Yükleme - Boşaltma eǧrilerinin önkonsolidasyon basincina göre tanimlanmasi
Teknik Dergi/Technical Journal of Turkish Chamber of Civil Engineers, cilt.18, sa.2, ss.4133-4143, 2007 (Scopus, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 18 Sayı: 2
- Basım Tarihi: 2007
- Dergi Adı: Teknik Dergi/Technical Journal of Turkish Chamber of Civil Engineers
- Derginin Tarandığı İndeksler: Scopus, TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.4133-4143
- Boğaziçi Üniversitesi Adresli: Evet
Özet
This paper presents the improvement of the extended power function proposed by Liu and Znidarcic [1], that defines the e-σ′v relationship for normally consolidated clays, to include the unloading-reloading behavior. With this extended power function, the unloading-reloading lines are defined according to their preconsolidation stresses. For naturally deposited soils with similar properties, this improved funcion can also be used for the estimation of one-dimensional swelling-settlement behavior and for the calculation of the variation in void ratio profiles under different vertical stresses. Additionally, using the water content of disturbed soil specimens, the soil characteristic consolidation parameters (αA, αB, βA, βB). and the knowledge of the in-situ stress conditions, it is feasible to obtain the preconsolidation stress by back analysis. As a result of substituting undisturbed sampling with more economical disturbed sampling, a more cost-effective site investigation strategy can be adopted.