Effective Stress and Equilibrium Equation for Soil Mechanics

Effective Stress and Equilibrium Equation for Soil Mechanics
Author :
Publisher : CRC Press
Total Pages : 263
Release :
ISBN-10 : 9781351607414
ISBN-13 : 1351607413
Rating : 4/5 (14 Downloads)

Book Synopsis Effective Stress and Equilibrium Equation for Soil Mechanics by : Longtan Shao

Download or read book Effective Stress and Equilibrium Equation for Soil Mechanics written by Longtan Shao and published by CRC Press. This book was released on 2017-12-06 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concept of effective stress and the effective stress equation is fundamental for establishing the theory of strength and the relationship of stress and strain in soil mechanics and poromechanics. However, up till now, the physical meaning of effective stress has not been explained clearly, and the theoretical basis of the effective stress equation has not been proposed. Researchers have not yet reached a common understanding of the feasibility of the concept of effective stress and effective stress equation for unsaturated soils. Effective Stress and Equilibrium Equation for Soil Mechanics discusses the definition of the soil skeleton at first and clarifies that the soil skeleton should include a fraction of pore water. When a free body of soil skeleton is taken to conduct internal force analysis, the stress on the surface of the free body has two parts: one is induced by pore fluid pressure that only includes normal stress; the other is produced by all the other external forces excluding pore fluid pressure. If the effective stress is defined as the soil skeleton stress due to all the external forces excluding pore fluid pressure, the effective stress equation can be easily obtained by the internal force equilibrium analysis. This equation reflects the relationship between the effective stress, total stress and pore fluid pressure, which does not change with the soil property. The effective stress equation of saturated soils and unsaturated soils is unified, i.e., o ̃=o ̃t –Seuw–(1–Se)ua. For multiphase porous medium, o ̃=o ̃t –u*,u*=Seiui(i=1,2,...,M). In this book, a theoretical formula of the coefficient of permeability for unsaturated soils is derived. The formula of the seepage force is modified based on the equilibrium differential equation of the pore water. The relationship between the effective stress and the shear strength and deformation of unsaturated soils is preliminarily verified. Finally, some possibly controversial problems are discussed to provide a better understanding of the role of the equilibrium equation and the concept of effective stress.


Effective Stress and Equilibrium Equation for Soil Mechanics Related Books

Effective Stress and Equilibrium Equation for Soil Mechanics
Language: en
Pages: 263
Authors: Longtan Shao
Categories: Technology & Engineering
Type: BOOK - Published: 2017-12-06 - Publisher: CRC Press

DOWNLOAD EBOOK

The concept of effective stress and the effective stress equation is fundamental for establishing the theory of strength and the relationship of stress and stra
Unsaturated Soils: Research & Applications
Language: en
Pages: 1850
Authors: Nasser Khalili
Categories: Technology & Engineering
Type: BOOK - Published: 2014-06-05 - Publisher: CRC Press

DOWNLOAD EBOOK

Unsaturated Soils: Research and Applications contains 247 papers presented at 6th International Conference on Unsaturated Soils (UNSAT2014, Sydney, Australia, 2
The Emergence of Unsaturated Soil Mechanics
Language: en
Pages: 752
Authors: National Research Council Canada
Categories: Technology & Engineering
Type: BOOK - Published: 1999 - Publisher: NRC Research Press

DOWNLOAD EBOOK

This publication is an assemblage of selected papers that have been authored or co-authored by D.G. Fredlund. The substance of these papers documents the milest
Unsaturated Soil Mechanics in Engineering Practice
Language: en
Pages: 946
Authors: Delwyn G. Fredlund
Categories: Technology & Engineering
Type: BOOK - Published: 2012-07-30 - Publisher: John Wiley & Sons

DOWNLOAD EBOOK

The definitive guide to unsaturated soil— from the world's experts on the subject This book builds upon and substantially updates Fredlund and Rahardjo's publ
Towards A Unified Soil Mechanics Theory: The Use of Effective Stresses in Unsaturated Soils, Revised Edition
Language: en
Pages: 248
Authors: Eduardo Rojas
Categories: Technology & Engineering
Type: BOOK - Published: 2018-08-08 - Publisher: Bentham Science Publishers

DOWNLOAD EBOOK

With the application of the effective stress concept, the strength and volumetric behavior of saturated materials was clearly understood. For the case of unsatu