soil mechanics course summary preparation for the exam what’s...

CIE_3008 토질역학 및 실험 1

Soil Mechanics

Course summary

Preparation for the exam

What’s next?


Course summaryLecture 1: Soil Composition

Lecture 2: Soil compaction

Lecture 3: Flow of water in soil

Lecture 4: Stress in soil mass

Lecture 5: Soil compressibility


Course summaryLecture 1: Soil Composition

Soil origin – grain sizeWeight – Volume relationship

Definitions: S, e, n, w, Dr, Consistency (Atterberg limit), ActivitySoil structureSoil classification

Lecture 2: Soil compactionLaboratory test Meaning of compaction curveField compaction curveStructure of compacted soil

Lecture 3: Flow of water in soilDarcy’s lawHow to draw the flow netHow to calculate the seepage forceHow to draw variation of hydraulic headHow to measure permeability


Course summaryLecture 4: Stress in soil mass

Stresses acting on a plane – Mohr CoulombTotal, effective stresses, pore pressureCalculate the variation of vertical stress with depth

Lecture 5: Soil compressibilityMeaning of EOP consolidation curveCalculate settlementCalculate time required for consolidationDerive stress-strain relationship for 1D consolidation


Final ExamSite(s) is given

Basic information (e.g., unit weight, porosity, depth to bedrock, water table depth)Lab test data (e.g. Grain size distribution test, Atterberg limit, compaction test, permeability test, consolidation test).

Classify the soilDetermine in-situ stressCalculate the response of the site and/or optimum design procedure under a given construction activity

Examples:Calculate possible excavation depthCalculate pump capacity for the excavationCalculate necessary compactionCalculate settlement due to consolidation / time required for primary consolidation Calculate the change in stresses under applied load


Final Exam

How to perform a lab test / How to interpret the lab test results

Both calculation / description problems


Soil properties we need in design

Two criterionStress < StrengthDeformation < Allowable

What you need to know:Strength (Drained / Undrained)Stiffness

Laboratory testTriaxial / Direct shear / Simple shear

In-situ testPenetration testNon-intrusive (geophyiscal test)



Two criterionStress < StrengthDeformation < Allowable

What you need to know:Strength (Drained / Undrained)Stiffness

Laboratory testTriaxial / Direct shear / Simple shear

In-situ testPenetration testNon-intrusive (geophyiscal test)


Problems we solve

Design problems

Retaining wall – earth pressure

Excavation

Slope stability

Shallow foundation

Deep foundation


Problems we solve

Design problems


Excavation

Slope stability

Shallow foundation

Deep foundation


Tools we use

Analytical solution

Empirical solution

Numerical solutionBeam – Spring approachFinite element method (FEM) / Finite difference method (FDM)


진 로

soil mechanics course summary preparation for the exam what’s...

Documents