WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7150
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Conference Object Citation - WoS: 1Fem Analysis With Special Focus on Soil-Structure Interaction of Floating Slab-Track Infrastructure in High Speed Railway Embankments(University of Zagreb Faculty, 2014) Bakunowicz, Paulina; Demirci, Hasan Emre; Egeli, İsfendiyarUse of Floating Slab Track (FST) type infrastructure systems in high speed railway (HSR) embankments is becoming increasingly popular in the world today as well as a mean of vibration isolation and safe and fast rail travel. The main emphasis of this study is on the application of non-ballasted concepts for high-speed operation used in the design of Far Eastern HSR embankments and a manufactured floating slab track system. In this paper, finite element method (FEM) is used to model soil-structure interaction. Effects of soil stiffness (k(s)) are carefully investigated. Longitudinal settlements are obtained and checked against allowable values. The study has confirmed the quality and reliability of the FST systems, which continue to have huge use in high speed rail design-construction projects nowadays.Conference Object Citation - WoS: 1Citation - Scopus: 1Validation of Porosity in 2d-Dem Cpt Model Using Large Scale Shaking Table Tests in Saturated Sands(Taylor & Francis, 2015) Bakunowicz, Paulina; Ecemiş, NurhanThis paper contains the calibration phase of two-dimensional numerical modelling of Cone Penetration Tests (CPT) in clean saturated sand deposits. The data for calibration is obtained from the CPTs conducted before five different large scale laminar box shaking table tests. The numerical simulations of the cone penetration tests are carried out under application of the Distinct Element Method (DEM) software PFC2D (ITASCA, 2008). This software has additional basic fluid analysis option which uses well recognized SIMPLE shame (Patankar, 1980). A series of conventional Consolidated Drained (CD) triaxial tests were performed in the laboratory to assess the stress-strain behavior of the tested soil. Based on these physical experiments, calibration and scaling of DEM model was performed. In this paper, it is also proven that CPT laminar box based correlations facilitate to overcome limitations of 2D simulation. Outcome can be widely and successfully applied both in scientific research and engineering practice.