PDF4PRO ⚡AMP

Modern search engine that looking for books and documents around the web

Example: biology

3. STRESSES IN THE GROUND

3-1 3. STRESSES IN THE GROUND STRESSES IN DRY SOIL Let A in Fig. (a) represent a small cubical shaped element of soil at a depth z in an extensive uniform soil deposit in which the GROUND surface is horizontal and which has been formed by the gradual accretion of material on the GROUND surface. Because the soil deposit is extensive (by comparison with distance z) in the horizontal direction the STRESSES on element A will be identical with the STRESSES on an adjacent element at the same depth below the GROUND surface. This means that there cannot be any shear STRESSES existing on the vertical or horizontal planes which bound element A.

changes in total stress or changes in pore pressure. Unlike the pore pressure, the effective stress and total stress are tensors. This means that direction as well as magnitude must be specified. The effective vertical stress ( σ ' v) at a depth of (z 1 + z 2) below the ground surface (Fig. 3.3) may be found from equations (3.4) and (3.5), as ...

Fullscreen Download

Tags:

  Stress, Ground, Tensor, Stresses, Stresses in the ground

Information

Domain:

Source:

Link to this page:

Please notify us if you found a problem with this document:

Spam in document Broken preview Other abuse

Transcription of 3. STRESSES IN THE GROUND

Documents from same domain

9. COMPRESSIBILITY AND SETTLEMENT

people.eng.unimelb.edu.au

σ2 = intermediate principal stress σ3 = minor principal stress compressives stresses and strains being positive For these conditions the settlement ( ρ) may be calculated from the vertical strain εv (= ε1) ρ = εv L = ( σ1/E) L (9.1) Fig. 9.1(b) represents a laterally confined elastic solid, which is subjected to a vertical stress σv.

  Stress, Strain

7. STRESS ANALYSIS AND STRESS PATHS

people.eng.unimelb.edu.au

7-6 7.4 in which the lower part of the diagram has been omitted for simplicity. The initial major and minor principal stresses are indicated by σli and σ3i respectively. Stress changes of ∆σ1 and ∆σ3 have been imposed to give the following final stresses

  Omitted

10. CONSOLIDATION

people.eng.unimelb.edu.au

underlying rock is pervious, through the lower boundary as well. This drainage of water will continue until the pore pressure distribution coincides with that which existed before the surface stress was applied as shown in Fig. 10.2(c). This means that the stress ∆σ which was originally

  Previous

8. STRENGTH OF SOILS AND ROCKS

people.eng.unimelb.edu.au

The tensile strength of soil is very low or negligible and in most analyses it is considered to be zero. In contrast a number of direct or indirect tensile strength tests are commonly carried out for rock. In a direct tensile strength test a cylindrical rock specimen is stressed along its axis by means of a tensile force.

  Rocks, Strength

11. THE STABILITY OF SLOPES

people.eng.unimelb.edu.au

In the special case where the slope is formed of a saturated clay the angle of shearing resistance ( φu) will be zero for the short term case. The maximum resisting shear stress around the failure arc will then be equal to the undrained cohesion (c u). If the undrained cohesion is a

  Glean, Slope

13. AN INTRODUCTION TO FOUNDATION ENGINEERING

people.eng.unimelb.edu.au

The foundation is that portion of a structure that transmits the loads from the structure to the underlying foundation material. There are two major requirements to be satisfied in the design of foundations: (a) Provision of an adequate factor of safety against failure of the foundation material.

  Foundations, Design

6. SEEPAGE THROUGH DAMS - people.eng.unimelb.edu.au

people.eng.unimelb.edu.au

6-1 6. SEEPAGE THROUGH DAMS 6.1 TYPES OF DAMS The type of earth or earth and rockfill dam that is constructed at a particular location is usually dictated by the local availability of appropriate materials such as quarried rock, gravel,

  Seepage

5. FLOW OF WATER THROUGH SOIL - University of Melbourne

people.eng.unimelb.edu.au

The pressure head h p is a measure (in units of length) of the pore pressure of the water in the soil. Again referring to Fig. 4.5 the pressure head at any point P may be found by measuring

  Pressure, Rope, Pore pressure

Writing one page research proposal Why one page?

people.eng.unimelb.edu.au

Writing one page research proposal • This brief notes is for potential candidates who wish to do PhD level research with me at the University of Melbourne. • I always request one page proposal to potential research candidates and current students who are in probationary candidature before writing the confirmation or conversion report.

  Research, Proposal, Writing, Pages, Writing one page research proposal

Related documents

Phys 446: Solid State Physics / Optical Properties

web.njit.edu

•Applied forces are described in terms of stress , • Displacements of atoms are described in terms of strain . • Elastic constants C relate stress and strain , so that = C . In a general case of a 3D crystal the stress and the strain are tensors …

  Stress, Tensor, Strain, Stress and strain

In Situ Stresses & Stress Measurement

www.eoas.ubc.ca

The horizontal stress can be estimated using of elastic theory. If we consider the strain along any axis of a small cube at depth, then the total strain can be found from the strain due to the axial stress, subtracting the str ain components due to the two perpendicular stresses. For example: E E E E E E H1 H2 V H1 V H1 H2 V

  Stress, Strain, S trains

ME185 - University of California, Berkeley

csml.berkeley.edu

e Relative Eulerian (Almansi) strain tensor ei Cartesian basis vectors in current configuration g Spatial temperature gradient tensor i Spatial identity tensor n Outward unit normal in the current configuration m Unit vector in the direction dx p Stress vector measured in the reference area q Heat flux vector per unit area t Stress vector

  Stress, Strain

Related search queries

Stress, Strain, Stress and strain, Tensors, Str ain