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Analysis of Axisymmetric Structures and Tanks Part I Analysis of Axisymmetric Structures and Tanks Part I HOT

Analysis of Axisymmetric Structures and Tanks by the Program ELPLA

Part I: Numerical models

This book describes procedures and methods available in ELPLA to analyze circular cylindrical shells structures. It is also considered, circular cylindrical tank resting on any layered compressible soil as one unit taking into account the soil-structure interaction effect.
The purpose of this text is to present the methods, equations, procedures, and techniques used in the formulation and development of the ELPLA function for analyzing tanks on different subsoil models. It is of value to be familiar with this information when using the software.
An understanding of these concepts will be of great benefit in applying the software, resolving difficulties and judging the acceptability of the results.
Two familiar types of subsoil models are considered, Winkler’s model and Continuum model. In addition, the simple assumption model is also considered. This model assumes linear contact pressure on the base of the tank.
The mathematical solution of the circular cylindrical tanks is based on the Finite Element Method using axi-symmetric circular cylindrical shell elements.
In which, axi-symmetric shell finite elements represent the tank wall and tank base according to the nature geometry of the structure.
Based on his M.Sc. research, El Gendy, O. (2016) had carried out a numerical modification on the methods in ELPLA for analyzing rafts to be applicable for analyzing cylindrical water storage tanks. Many tested examples are presented to verify and illustrate the available methods. Some of verification examples for analyzing cylindrical water storage tanks on multi-layered soil carried out by El Gendy, O. (2016) are presented in the second part of this book


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