A study on response of horizontally layered soil deposits to random base excitations.

Özkan, Mehmet Yener


A Comparative assessment of seismic soil liquefaction triggering relationships
Ilgaç, Makbule; Çetin, Kemal Önder; Department of Civil Engineering (2015)
Starting with 1964 Niigata and Alaska Earthquakes, seismic soil liquefaction behavior has become a major research stream in geotechnical earthquake engineering. Since then, a number of investigators (e.g.: Seed et. al. (1984), Liao et. al. (1988, 1998), Toprak et. al. (1999), Cetin et. al. (2004) and Idriss and Boulanger (2004, 2008, 2012)) introduced deterministic and probabilistic liquefaction triggering assessment methodologies. The scope of this study is to develop an SPT-based seismic soil liquefaction...
A parametric study on three dimensional modeling of parallel tunnel interactions
Karademir, Salahaddin Miraç; Erol, Orhan; Department of Civil Engineering (2010)
A parametric study is performed to investigate the parallel tunnel interaction. Three dimensional finite element analyses were performed to determine the effects of soil stiffness, pillar width and advancement level of the second tunnel on the behaviour of displacement, bending moment and shear force of the previously constructed tunnel. In the analysis PLAXIS 3D Tunnel geotechnical finite element package was used. This program allows the user to define the actual construction stages of a NATM tunnel constr...
A Preliminary study on construction of a high capacity tensiometer and its use in measurement of matrik suction in unsaturated soils
Köksalan, Ali Okan; Toker, Nabi Kartal; Department of Civil Engineering (2013)
Soil suction is one of the main state parameters that governs unsaturated soil behaviour. Tensiometers are the only type of probe that can measure soil suction directly, but only up to 90 kPa. In the past two decades, a new type of tensiometer with much greater measurement range (up to 2 MPa) has appeared in the literature. The measurement range (i.e. capacity) of a tensiometer is limited by (i) how well it is saturated, and (ii) the air entry value of its porous interface. In this study, the first high cap...
An algebraic method in solving eigenvalue problems
Pamir, Aydan; Çelebi, Okay; Demiralp, Metin; Department of Mathematics (1992)
A dynamic theory for laminated composites consisting of anisotropic layers
Yalçın, Ömer Fatih; Turhan, Doğan; Department of Engineering Sciences (2006)
In this thesis, first a higher order dynamic theory for anisotropic thermoelastic plates is developed. Then, based on this plate theory, two dynamic models, discrete and continuum models (DM and CM), are proposed for layered composites consisting of anisotropic thermoelastic layers. Of the two models, CM is more important, which is established in the study of periodic layered composites using smoothing operations. CM has the properties: it contains inherently the interface and Floquet conditions and facilit...
Citation Formats
M. Y. Özkan, “A study on response of horizontally layered soil deposits to random base excitations.,” Ph.D. - Doctoral Program, Middle East Technical University, 1976.