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
Brief development history

Based on the emphasis and thenature of study in the area of geotechnical engineering, the time spanextending from 1700 to 1927 can be divided into 3 major periods：

Preclassical period          （1700-1776）

Classical soil mechanics （1777-1910）

Morden soil mechanics   （1911-1927）


Briefdevelopment history

ò1773Coulomb（developed by Mohr）：Mohr-Coulomb strength theory ® the first theory about soilmechanics

ò1776Coulomb：Coulomb earth pressure theory

ò1856  Darcy：Darcy's seepage 

ò1857  Rankine：Rankine earth pressure theory

ò1920Prandtl：Prandtl extreme force bearing formula

ò1921-1923  Terzaghi: The principle of effective stressand consolidation theory

ò1925  Terzaghi: published《SoilMechanics》
®Soil mechanics became an independentsubject

ò1936  The first conference ofthe International Society of Soil Mechanics and Foundation Engineering (ISSMFE) was held in America.

ò1960'sMordensoil mechanics