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Dr.Ing.Asrat Worku _____ _____ External Examiner Signature ... To study the behavior of braced cuts, different models were developed and analyzed using existing theories and Plaxis software. This was accomplished by parametric study conducted on a number
Model-farmer based agricultural extension service delivery approach: ... Asrat Worku Jarsa. Subject Area: Life Sciences. Abstract: For decades, range of extension approaches has been employed in Ethiopia to support farmers with advice, technologies and new ways of doing things.
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1.1 model and Generalized Model Worku (2010) proposed a new approach of continuum modeling by addressing the major shortcomings other continuum models. The subgrade is idealized as an elastic FOUNDATION continuum of finite thickness H. This approach of the subgrade by an elastic stratum is convenient in developing
PDF | On May 1, 2013, Asrat Worku published Discussion of "Practical Subgrade Model for Improved Soil-Structure Interaction Analysis: Software Implementation" by Regis J. Colasanti and John S ...
Application of a generalized subgrade model in the analysis of circular plates on elastic foundations Meron Alebachew Philips Medical Systems Nederland B.V., Addis Ababa, Ethiopia, e-mail: [email protected] Asrat Worku Civil Engineering Department, Addis Ababa University, Addis Ababa, Ethiopia, e-mail: [email protected] ABSTRACT
Asrat Worku Addis Ababa University Know More. Asrat Worku Addis Ababa University Civil Engineering Department Faculty Member Studies Slope Stability Soil-Structure Interaction and Foundation/subgrade Modeling Asrat is a civil engineer who combines practice with …
MODELS FOR AN ELASTIC SUBGRADE Asrat Worku Department of Civil Engineering Addis Ababa University ABSTRACT Three new variants of continuum-based models for an elastic subgrade are proposed. The subgrade is idealized as a homogenous, isotropic elastic layer of thickness H …
Asrat Worku Operations Manager for Geotechnics GIBB . View Asrat Worku''s profile on LinkedIn, the world''s largest professional community. Some of his research interests are in the areas of subgrade modeling, earthquake engineering, static and . Get price
14-09-2020· From the plots of the outputs, it is observed that the generalized models of Worku are suitable and more appropriate than classical models to analyze circular plates on elastic foundations. Keywords: Continuum subgrade model, Circular plate, FEM, Mathematica and PLAXIS software.
SUBGRADE MODELING Asrat Worku Department of Civil Engineering Addis Ababa University ABSTRACT Based on an isotropic elastic continuum of thickness H overlying a rigid stratum, a generalized formulation for the classical single-parameter Winkler's subgrade model is presented. In this formulation, all the normal components of
Alula Tafesse 1* Asrat Worku 2 Ermias Mekonnen 3 1.Department of Agricultural Economics, College of Agriculture, Wolaita Sodo University, PO box 138, SNNPR, Ethiopia 2.Department of Rural Development and Agricultural Extension, College of Agriculture, Wolaita …
Part I: A Generalized Formulation of Continuum Models for Elastic Foundations Asrat Worku1 M. ASCE 1Civil Engineering Department, Addis Ababa University, P. O. Box 385, Addis Ababa, Ethiopia; e-mail: [email protected] ABSTRACT
PART II: Application of Newly Derived and Calibrated Continuum Subgrade Models in the Analysis of Beams on Elastic Foundations Asrat Worku1 M. ASCE and Yimer Degu2 1Civil Engineering Department, Addis Ababa University, P. O. Box 385, Addis Ababa, Ethiopia, e-mail: [email protected]
The performance of the subgrade model employed is compared with other existing simplified subgrade models and with PLAXIS itself over a wide range of cases. The results show that the proposed model performs better than the models it was compared with and can be easily adjusted to yield results in good agreement with the FE outputs over the majority of the plate area.
PROF ASRAT WORKU is an Associate Professor of Civil Engineering at Addis Ababa University (AAU), Ethiopia, and is currently also working as Operations Manager for Geotechnics at Gibb International in Nairobi. He completed his BSc degree in Civil Engineering in 1983, and, specialising in geotechnics, his MSc degree in 1989, both from AAU.
143 Discussion of "Practical Subgrade Model for Improved Soil-Structure Interaction Analysis: Software Implementation" by Regis J. Colasanti and John S. Horvath / Asrat Worku . nr 3 FORUM 145 Temporary Support for Rebar Column Cages during Construction / Michael J. Casey and Girum S. Urgessa
97 Discussion of "Practical Subgrade Model for Improved Soil-Structure Interaction Analysis: Model Development" by John S. Horvath and Regis J. Colasanti / Asrat Worku 99 Discussion / …
to predict the pavement's response. The model was constructed with the ANSYS programme and the results were validated against the linear elastic response calculated by ELAYER. Kim and Lee (2011) studied a 3D ABAQUS model assuming the Uzan-Witzak nonlinear model for the base and a bilinear model for the subgrade.
Discussion of "Practical Subgrade Model for Improved Soil-Structure Interaction Analysis: Software Implementation" by Regis J. Colasanti and John S. Horvath. Practice Periodical on Structural Design and Construction, 2013. Asrat Worku. Download PDF. Download Full PDF Package. This paper.
Asrat WORKU | Addis Ababa University, Addis Ababa | AAU,, A generalized model is presented for a subgrade idealized as an elastic layer overlying a rigid base In contrast to previous works no stresses, strains or displacements are neglected a prioriResearch Article Exact Stiffness for Beams on Kerr, Worku [ ] Synthetic and hierarchical correlations between several mechanical subgrade models ...
Email: [email protected] Tel: +251 911 773055 Address: Addis Ababa Institute of Technology King George VI St Addis Ababa 1000 Addis Ababa, Ethiopia. Office number: 203. Research interest: Static and dynamic soil-structure interaction • Development of subgrade/foundation models • Development of analysis methods for raft and piled-raft ...