ground engineering solutions for infrastructure projects
TRANSCRIPT
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Case Study on Ground Engineering Solutions For
Infrastructure Projects
Geotechnical Engineering - 2
PREPADE BYAbhishek Mangukiya :- 14SOECV11031
Rajan Mathukiya:-14SOECV11033Harsh Nasha:-14SOECV11037Prashant Pal:-14SOECV11039
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CONTENTS INTRODUCTION
GROUND ENGINEERING AND FOUNDATION SYSTEMS
GEOTECHNICAL CHALLENGES IN INFRASTRUCTURE PROJECTS
CASE STUDIES
1. TECHNICAL EXPERTISE2. DESIGN & BUILD EXPERTISE
CONCLUSIONS
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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
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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
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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
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VIBRO REPLACEMENTVIBRO COMPACTION
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Compaction Grouting Dynamic Compaction
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Chemical Grouting Jet Grouting
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Deep Soil Mixing
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Ground Improvement: Soil Dependency
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Ground Improvement: Suitability
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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?
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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
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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
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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
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Soil Conditions
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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.
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Addressing Lateral Capacity of Piles
Stone Columns of 0.5m dia. Installed at the centre and surrounding two piles
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Design & Build Expertise: Innovative Technology
• Project : Chemical Plant• Location : Kutch region, Gujarat State, India• Structures: Industrial Structures • Plot Area : 25 Ha.
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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
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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
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Subsoil Data
Design & Build Expertise: Innovative Technology
Wind Turbines
Project Location : Bhendewadi, Kolhapur, Maharashtra
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Design & Build Expertise: Innovative Technology
Wind Turbines Typical Scheme And Activities
Foundation
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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
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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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THANK YOU SO MUCH