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APPLICATION OF GEOTECHNICAL ENGINEERINGGEOTECHNICAL ENGINEERING

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

COURSE STRUCTURE : (3L-0T-0P-2A)

• Slope Stability Analysis:

TIMING: W, F – 9:00 -10:15; T TH – 17:10 - 18:00

SYLLABUS

VENUE: L15

CREDITS: 11

Course Outline

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Slope Stability Analysis:-Limit Equilibrium Method: Infinite and Finite slopes

• Analysis and Design of Earth Retaining Structures: -Rigid and Flexible Retaining walls, Reinforced earth

• Ground Improvement Techniques: -Preloading, Drains, Stone columns, Grouting, Geosynthetics

• Machine Foundation and Design

REFERENCES

• Bowles  Foundation Analysis and Design• Terzaghi  et al Soil Mechanics in Engineering Practice• Lambe & Whitman Soil Mechanics• Das  Principles of Geotechnical Engineering• Das Principles of Foundation Engineering• Swami Saran Reinforced Soil and its Engineering ApplicationsH E i i i i l f d difi ti

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

• Hausmann Engineering principles of ground modification• Murthy  Advanced Foundation Engineering• Mittal An introduction to Ground Improvement Techniques• Kurian Modern Foundations: Introduction to Advanced Techniques•• Research papers (JOURNALS and CONFERENCE PROCEEDINGS)

GRADING POLICY

End semester exam : 40%Mid semester exam : 25%Quiz : 10%Term Paper / Mini Project : 10%

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Term Paper / Mini Project : 10%Assignment / Design : 10%Attendance : 5%

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What new you will learn in this course?

Slope StabilityGround

Improvement Techniques

New

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Retaining structures

Reinforced Earth

Machine foundation

Geotechnical Engineering ‐ Review

Phase relationshipSoil structureAtterbergs limitCl Mi l

Soil Mechanics and Foundation Engineering

Effective stressPermeabilitySeepageGeostatic stress

CE242 CE351

Site investigationDrilling and samplingField test: SPT

CE352

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Clay MineralogySoil classification

Geostatic stress CompactionConsolidationShear strengthStress pathElastic propertiesLaboratory testing

Field test: SPT, SCPT, DCPT, PLT, DLT, Vane shear

Stress distributionBearing capacitySettlementEarth pressureFoundation design

Applications of Geotechnical Engineering

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Applications of Geotechnical Engineering

Ground Improvement Techniques

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

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Foundation ‐ A structural element which can transfer the load of the super            structure to the soil layers on which it is resting 

Yes No

Shallow Deep

Can foundation transfer the load safely to soil at shallow depth

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

foundation foundation

Shallow Deep

Df ≤ B Df > 4B

Ground Improvement!

Foundation Design – Major Considerations

Strength Requirement Serviceability Requirement

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Bearing capacity Settlement

Foundation has to be safe against overall shear failure in the soil that supports it

Foundation cannot undergo excessive displacement (settlement)

Snap shots of Shallow Foundations

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Snap shots of Pile Foundations

Driven Piles Cast-in-situ Piles

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

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Local shear failure Punching shear failureGeneral shear failure

Load Transfer Mechanism of Shallow Foundation

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Load Transfer Mechanism of Deep Foundation

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Point resistance Frictional resistance

Condition of limiting equilibrium for the geostatic stress

Active thrust

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

Passive resistance

Application of Geotechnical Engineering

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur