Fluid Dynamics Based Large Deformation Analysis in Geomechanics

ISBN-13: 9783330328761 / Angielski / Miękka / 2020 / 116 str.

Hagos Hadush Seged; Atsushi Yashima

Opis

Lateral spread due to liquefaction involves large ground movements, where shear strains reach several tens of percent and sometimes exceed 100%. Traditional analytical methods for prediction of soil deformation, which are based on such general assumptions as (1) deformations are small and (2) soil particles do not completely lose contact among each other, cannot describe this phenomenon. Besides, several results from case studies and model tests suggest that liquefied soil undergoing lateral spread behaves like a fluid. The principal aim of the work illustrated in this book is to develop new numerical methods for lateral spread analysis in the framework of fluid dynamics where a particular emphasis is made on multi fluid dynamics schemes. Different methods for liquefaction induced lateral spread analysis including empirical methods, model tests and experimental methods for determination of liquefied soil viscosity are reviewed. Numerical methods that treat liquefied soil as solid and those that treat liquefied soil as fluid are also discussed. Finally, two fluid dynamics based numerical methods for lateral spread analysis are presented.

O autorze

Hadush Seged, Hagos
Dr. Hadush Seged is a Geotechnical Engineer/Dam Engineer with over 24 years of professional experience. After completing his PhD degree, he worked as Assistance Professor of Geotechnical Engineering in Addis Ababa University, Ethiopia. Dr. Hadush has published a number of papers in international peer reviewed journals and conferences.