Soil Mechanics

ZHANG Shuchao

目录

  • 1 Physical properties and engineering classification of soil
    • 1.1 Formation of soil
    • 1.2 Components of soil
    • 1.3 Soil fabric
    • 1.4 Physical features and indexes of soil
    • 1.5 Relative density of cohesionless soil,            consistency of soil and soil compaction
    • 1.6 Soil classification
    • 1.7 Videos
    • 1.8 Chapter Checkpoint
  • 2 Water flow through soil
    • 2.1 Introduction
    • 2.2 Driving potential-total head
    • 2.3 Darcy's law
    • 2.4 Determination of coefficient of permeability
    • 2.5 Two-dimensional flow of water  and flow net
    • 2.6 Effective stress and pore water pressure in soil
    • 2.7 Seepage force and critical hydraulic gradient
    • 2.8 Videos
    • 2.9 Chapter Checkpoint
  • 3 Stress in soil
    • 3.1 Introduction
    • 3.2 Effective overburden pressure in the ground
    • 3.3 Contact pressure between foundation and the ground
    • 3.4 Stress increase in the ground
    • 3.5 Videos
    • 3.6 Chapter Checkpoint
  • 4 Compression and consolidation of soil
    • 4.1 Introduction
    • 4.2 Soil compressibility characteristics
    • 4.3 Calculation formula of soil compression with zero lateral strain
    • 4.4 e-p curve method for foundation settlement calculation
    • 4.5 e-logp curve method for foundation settlement calculation
    • 4.6 Terzaghi's theory of one-dimensional consolidation
    • 4.7 Determination of coefficient of consolidation
    • 4.8 Secondary compression
    • 4.9 Videos
    • 4.10 Chapter Checkpoint
  • 5 Shear strength of soil
    • 5.1 Introduction
    • 5.2 Friction model in Mohr-Coulomb failure criterion
    • 5.3 Shear strength test
    • 5.4 Pore pressure coefficients in triaxial test
    • 5.5 The shear strength characteristics of soil
    • 5.6 Stress path and concept of critical state
    • 5.7 Videos
    • 5.8 Chapter Checkpoint
  • 6 Earth pressure on retaining structures
    • 6.1 Introduction
    • 6.2 Earth Pressure at Rest
    • 6.3 Rankine’s Lateral Pressure
    • 6.4 Coulomb’s Earth Pressure Theory
    • 6.5 Active Thrust on the Bracing Systems of Open Cuts
    • 6.6 Summary and General Comments
    • 6.7 Videos
    • 6.8 Chapter Checkpoint
  • 7 Slope stability
    • 7.1 Introduction
    • 7.2 Slopes in Cohesionless Soil
    • 7.3 Slopes in Cohesive Soil-Total Stress Analysis
    • 7.4 Swedish Method of Slices
    • 7.5 Bishop’s Simplified Method
    • 7.6 Slope Stability in Practical Problems
    • 7.7 Simplified Method for Compound Slip
    • 7.8 Discussion
    • 7.9 Videos
    • 7.10 Chapter Checkpoint
  • 8 Bearing capacity of foundations
    • 8.1 Introduction
    • 8.2 Allowable Bearing Capacity Determined
    • 8.3 Prandtl’s Theory
    • 8.4 Terzaghi’s Soil Bearing Capacity Formulas
    • 8.5 In-situ Bearing Tests
    • 8.6 Code Recommendations for Bearing Capacity
    • 8.7 Factors Influencing Bearing Capacity
    • 8.8 Videos
    • 8.9 Chapter Checkpoint
  • 9 Introduction
    • 9.1 Introduction of the course
    • 9.2 Brief development history
    • 9.3 Engineering definitions of soil
    • 9.4 Importance of soil mechanics
    • 9.5 Basic requirment for learning the course
    • 9.6 Video
  • 10 Lab tests
    • 10.1 Soil classification
    • 10.2 Consolidation test
    • 10.3 Direct shear test
    • 10.4 Test report
    • 10.5 ​Virtual Simulation Test
Engineering definitions of soil

Geologistsclass all items of the Earth'scrust as rock, whether hard or soft deposits, while civil engineers considerrock and soil separately.

Rock：Rocksare made from various types of minerals. Minerals are substances of crystallineform made up from a particular chemical combination. The main minerals found inrock include quartz, feldspar, calcite and mica. Geologists classify all rocksinto three basic groups:igneous, sedimentary and metamorphic.

Soil：Soils formed by the process of weathering, that is disintegration anddecomposition of rock and mineral at or near the earth surface through theaction of many naturally physical or mechanical and chemical agents intosmaller and smaller particles.

Soil has the property of stratification.Soil with the same composition, physical and chemical conditions andengineering properties at the same layer of the earth is called the stratum.

  A number of different thickness, differentnature, with a certain combination of the upper and lower sequence of soilaggregates known as soil mass.

 Research object of Soil Mechanics: soilassociated with engineering construction.