Forward And Back Analyses Of Dısplacements Caused By Deep Excavatıons
Latest years due to the urbanization of the big cities the requirement of the structures with multi storey basement is increased. Considering the basement level of the structures and the foundation excavation depth, deep excavation and the retaining system design became inevitable. Even if the support system design is performed with conventional limit state approach, the calculation of the deformations of the retaining structure and around of it is also required. In this context, within this thesis, numerical back analyses are performed by using the monitoring data of a soft alluvium soil. The parameter and the constitutive soil model effect is studied by utilizing finite element method.
As a result of the analyses, the most effective parameters on the deformations around the retaining structure and the represantative best-fit parameters are defined. The modulus of elasticity and the deformation is the most effective parameter comparing to the shear strength and the angle of shearing resistance. In the back analyses with trial and error method, it is also concluded that the selection of the constitutive soil model has a significant effect on the deformations.
