Shear Strength of soil and behaviour of soil under shear actionsatish dulla
it contains details of property and theory of soil under shear action.Even the experiments to test the soil strength has given with illstrations
FOR MOVIES
http://movie-rulz.xyz/category/hollywood-movies/2016-english-movies/
http://movie-rulz.xyz/
http://movie-rulz.xyz/category/telugu-movies/2016-telugu-movies/
Shear Strength of soil and behaviour of soil under shear actionsatish dulla
it contains details of property and theory of soil under shear action.Even the experiments to test the soil strength has given with illstrations
FOR MOVIES
http://movie-rulz.xyz/category/hollywood-movies/2016-english-movies/
http://movie-rulz.xyz/
http://movie-rulz.xyz/category/telugu-movies/2016-telugu-movies/
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Detailed content on shear strength of soils, principles of effective stresses, tests conducted to determine the shear strength of soils and its applications, dilatancy, thixotropy and sensitivity.
Lecture 11 Shear Strength of Soil CE240Wajahat Ullah
Shear Strength of Soil
Shear strength in soils
Introduction
Definitions
Mohr-Coulomb criterion
Introduction
Lab tests for getting the shear strength
Direct shear test
Introduction
Procedure & calculation
Critical void ratio
Geotechnical Engineering-II [Lec #3: Direct Shear Test)Muhammad Irfan
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
Detailed content on shear strength of soils, principles of effective stresses, tests conducted to determine the shear strength of soils and its applications, dilatancy, thixotropy and sensitivity.
Lecture 11 Shear Strength of Soil CE240Wajahat Ullah
Shear Strength of Soil
Shear strength in soils
Introduction
Definitions
Mohr-Coulomb criterion
Introduction
Lab tests for getting the shear strength
Direct shear test
Introduction
Procedure & calculation
Critical void ratio
Geotechnical Engineering-II [Lec #3: Direct Shear Test)Muhammad Irfan
Class notes of Geotechnical Engineering course I used to teach at UET Lahore. Feel free to download the slide show.
Anyone looking to modify these files and use them for their own teaching purposes can contact me directly to get hold of editable version.
The standard fiber-reinforced soil is defined as a soil mass that contains randomly distributed, discrete elements, i.e. fibers, which provide an improvement in the mechanical behavior of the soil composite.
Base isolation is one of the most widely accepted seismic protection systems in earthquake prone areas. It mitigates the effect of an earthquake by essentially isolating the structure from potentially dangerous ground motions, especially in frequency range where building is mostly affected. This includes
Concept of Base Isolation
Principle of Base Isolation
Comparison of Fixed Base Structure and Isolated Base Structure
Types of Isolation Components
Base Isolation in Real Buildings
Applications of Base Isolation
Triaxial shear test and shear strength properties of soilsatish dulla
experiments to test the soil strength has given with illstrations. mainly concentrates on the most effective test, triaxial shear test along with brief introdction.
FOR MOVIES
http://movie-rulz.xyz/category/hollywood-movies/2016-english-movies/
http://movie-rulz.xyz/
http://movie-rulz.xyz/category/telugu-movies/2016-telugu-movies/
shear strength
Angle of repose of sand
Coulomb's law of shear strength
Mohr circle of Stress
Determination of shear strength parameters of soils
Direct shear test
Triaxial Shear Test
Consolidated drained (CD) test
Unconfined Compression Test
Vane shear test
Static Cone Penetrometer Test
Standard Penetration Test (SPT)
1. Shear Strength of Soils N. Sivakugan Duration: 17 min: 04 sec
2.
3. Shear failure The soil grains slide over each other along the failure surface. No crushing of individual grains. failure surface
4. Shear failure At failure, shear stress along the failure surface ( ) reaches the shear strength ( f ).
5. Mohr-Coulomb Failure Criterion c failure envelope cohesion friction angle f is the maximum shear stress the soil can take without failure, under normal stress of . f
6. Mohr-Coulomb Failure Criterion Shear strength consists of two components: cohesive and frictional . f f c f tan c cohesive component frictional component
7. c and are measures of shear strength. Higher the values, higher the shear strength.
8. Mohr Circles & Failure Envelope X Y Soil elements at different locations X Y ~ failure ~ stable X Y
9. Mohr Circles & Failure Envelope Y Initially, Mohr circle is a point c c + The soil element does not fail if the Mohr circle is contained within the envelope GL c c
10. Mohr Circles & Failure Envelope Y c GL As loading progresses, Mohr circle becomes larger… .. and finally failure occurs when Mohr circle touches the envelope c c
11. Orientation of Failure Plane Y c GL c + 90+ Failure plane oriented at 45 + /2 to horizontal c c 45 + /2 45 + /2 Y
12. Mohr circles in terms of & ’ = + v h v ’ h ’ X X X v h v ’ h ’ u u total stresses effective stresses u
13. Envelopes in terms of & ’ Identical specimens initially subjected to different isotropic stresses ( c ) and then loaded axially to failure f Initially… Failure u f At failure, 3 = c ; 1 = c + f 3 ’ = 3 – u f ; 1 ’ = 1 - u f c, c’, ’ in terms of in terms of ’ c c c c
14. Triaxial Test Apparatus piston (to apply deviatoric stress) pedestal perspex cell cell pressure back pressure pore pressure or volume change porous stone impervious membrane O-ring water soil sample at failure failure plane
15. Types of Triaxial Tests Under all-around cell pressure c Shearing (loading) Is the drainage valve open? Is the drainage valve open? deviatoric stress ( ) yes no yes no C onsolidated sample U nconsolidated sample D rained loading U ndrained loading
16.
17. Granular soils have no cohesion. c = 0 & c ’ = 0 For normally consolidated clays, c ’ = 0 & c = 0. For unconsolidated undrained test, in terms of total stresses, u = 0
18.
19.
20.
21. 1 - 3 Relation at Failure X soil element at failure 3 1 X 3 1
22. Stress Point h v stress point t s ( v - h )/2 ( v + h )/2 stress point X v h
23. Stress Path Stress path is the locus of stress points Stress path Stress path is a convenient way to keep track of the progress in loading with respect to failure envelope. During loading… t s
24. Failure Envelopes c cos tan -1 (sin ) failure During loading (shearing)…. stress path t s c
25. Pore Pressure Parameters A simple way to estimate the pore pressure change in undrained loading, in terms of total stress changes ~ after Skempton (1954) Skempton’s pore pressure parameters A and B Y 1 3 u = ?
26. Pore Pressure Parameters For saturated soils, B 1. A-parameter at failure (A f ) For normally consolidated clays A f 1. B-parameter B = f (saturation,..) A f = f(OCR) For heavily overconsolidated clays A f is negative.