Case Study on Ground Engineering Solutions For

Infrastructure Projects

Geotechnical Engineering - 2

PREPADE BYAbhishek Mangukiya :- 14SOECV11031

Rajan Mathukiya:-14SOECV11033Harsh Nasha:-14SOECV11037Prashant Pal:-14SOECV11039

CONTENTS INTRODUCTION

GROUND ENGINEERING AND FOUNDATION SYSTEMS

GEOTECHNICAL CHALLENGES IN INFRASTRUCTURE PROJECTS

CASE STUDIES

1. TECHNICAL EXPERTISE2. DESIGN & BUILD EXPERTISE

CONCLUSIONS

Types Of FoundationFoundation Engineering

Shallow Foundations

1. D<=B2. LESS LOAD3. LOW WATER

TABLE

Deep Foundation

1. D>B2. MORE LOAD3. HIGH WATER

TABLE

Introduction

CONCEPT OF GROUND IMPROVEMENTGround improvement is defined as the

controlled alteration of the state, nature or mass behavior of ground materials in order to achieve an intended satisfactory response to existing or projected environmental and engineering actions.

PRINCIPLES OF GROUND IMPROVEMENT

1. Densification (loose sands) : Resettlement of Granular Particles

2. Consolidation (cohesive) : Drainage and reduction of voids

3. Chemical modification : Hardening by addition of binders

4. Displace & reinforce : Pushing unsuitable soils aside installing hard elements

Ground Improvement Method

1. DENSIFICATION :- 1.VIBRO COMPACTION 2.DYNAMIC COMPACTION 3.COMPACTION GROUTING2. CONSOLIDATION :- VIBRO REPLACEMENT3. CHEMICAL MODIFICATION :- 1.DEEP SOIL MIXING 2.JET GROUTING 3.DEEP SOIL MIXING 4.CHEMICAL

GROUTING4. REINFORCEMENT :- VIBRO REPLACEMENT

VIBRO REPLACEMENTVIBRO COMPACTION

Compaction Grouting Dynamic Compaction

Chemical Grouting Jet Grouting

Deep Soil Mixing

Ground Improvement: Soil Dependency

Ground Improvement: Suitability

Choice of Technique Suitability of Technique• Are the encountered soil and suggested

technique fundamentally compatible?Technical Compliance• Does the suggested technique satisfy the

design requirements ? (strength or stiffness?)

Availability Of Material• Is the required material (stone, cement)

readily available?Cost• Is the proposed technique within the

budget? What is the cost of time when there is saving?

Protection Of The Environment • Does the suggested technique reduce or

avoid pollution? Is the technique resource efficient?

Geotechnical Challenges Technical Expertise1. WEAK DEPOSITS/MARINE DEPOSITS /

RECLAMATION 2. DESIGN SOIL PROFILE & PARAMETER3. SELECTION OF SUITABLE FOUNDATION4. FULFILLING STRUCTURAL REQUIREMENTS5. ALTERNATIVE FOUNDATION SYSTEMS

Design And Build Expertise1. ALTERNATIVE DESIGN & BUILD SOLUTIONS 2. LIQUEFACTION MITIGATION3. INNOVATIVE TECHNIQUES 4. SAVINGS IN COST AND TIME5. COST EFFECTIVE FOUNDATIONS ARE KEY TO

SUCCESS

Operational Excellence1. BOREHOLE STABILITY2. KNOWLEDGE ON DRILLING FLUID3. EFFECTIVE USAGE OF STABILIZING FLUID4. QUALITY CONTRO

GROUND SOLUTION FOR INFRASTRUCTURE PROJECTS CASES

5. INDUSTRIAL PLANT6. MULTI-STOREYED BUILDING7. RESIDENTIAL BUILDING8. WIND TURBINES

Technical Expertise : Infrastructure Projects On

Industrial Plant UP POWER PLANT

Project : 2 X 500mw Thermal Power Plant (Unit D)Owner : Uttar Pradesh Rajya Vidyut Utpadan

Nigam Ltd (Uprvunl)Location : Anpara, Near Sonebhadra (U.P)Structures :1. Coal Handling Plant 2. Water System Package 3. Substation (760 Kv)Construction Site : Abandoned Fly Ash Deposit

Resting On Clay LayerConfirming Design : Deep Foundations To Address

Vertical And Lateral Loads

Soil Conditions

Geotechnical Solutions General Approach• DEEP FOUNDATIONS : For settlement sensitive

structures • SHALLOW FOUNDATIONS : For lightly loaded

structures pump house, drive house, cable gallery, sub-station etc.

Geotechnical Value Addition Combination of ground improvement and bored

piles Ground improvement using vibro stone columns

(dry bottom feed method) was suggested.

Addressing Lateral Capacity of Piles

Stone Columns of 0.5m dia. Installed at the centre and surrounding two piles

Design & Build Expertise: Innovative Technology

• Project : Chemical Plant• Location : Kutch region, Gujarat State, India• Structures: Industrial Structures • Plot Area : 25 Ha.

Soil Data and Loading Conditions

Loading Conditions • Foundation Type : Piles For Heavily Loaded Structures :Raft For Light To Medium Loaded Structures• Loading Intensity : 100 Kpa To 200 Kpa• Settlement Criteria : < 100 Mm For Shallow Foundations

Design & Build Expertise: Innovative TechnologyMulti - storeyed Building

Tall buildings , Umang Realtech,NCR, IndiaProject : Summer PalmLocation : NCR RegionBuilding : G + 14 floors, 13 TowersRaft Area : 12,000 sq.mPlot Area : 12 Acres Soil Required Geotechnical SolutionReinforcement To improve composite shear strengthCompaction in granular/soft subsoil To increase composite compression modulusLarge Drainage path To improve overall permeability Mitigate Liquefaction Soil

Data

Subsoil Data

Design & Build Expertise: Innovative Technology

Wind Turbines

Project Location : Bhendewadi, Kolhapur, Maharashtra

Design & Build Expertise: Innovative Technology

Wind Turbines Typical Scheme And Activities

Foundation

Conclusions1. Ground improvement techniques such as

dry vibro stone columns, deep soil mixing, jet grouting, prefabricated vertical drains can be used to provide optimal foundations.

2. These techniques can be used both for heavy, tall and settlement sensitive structures and also for smaller simpler structures

3. Optimal foundations offer savings in cost, time, materials, convenience and protection to the environment

4. Excellent soil information, a correct choice of technique, good equipment, experienced people, testing and monitoring during and after construction is essential for successful project completion. Operational

REFERENCES

1. https://www.google.co.in/keller ground engineering

2. Keller Ground Engineering Company Ground Engineering Solutions for Infrastructure Projects: Case Studies

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