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Reinforced soil structures
This document discusses reinforced soil structures and retaining walls. It covers the need for retaining walls, types of retaining walls including conventional and reinforced soil walls. Reinforced soil walls have facing components, different types of reinforcement, and configurations. Design considerations include loading, stability calculations, forces in the reinforcement, and standards. The document provides an example case study of a reinforced soil wall constructed in India.
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Presentation introduction by Prof. Reddy and Rakesh Reddy, defining reinforced soil structures.
Discusses the necessity of retaining walls and categorizes them into different types.
Introduces early concepts of retaining walls and describes conventional retaining wall types.
Explains soil nailing and its design aspects, detailing different design principles.
Details the basic principles of reinforced soil and various configurations, including wall facings.
Overview of different types of retaining walls constructed in India.
Schematic representation of the construction procedure for full height panel walls.
Examines differential settlement considerations in approach roads affecting wall stability.
Covers codes, design standards for reinforced soil walls, including differences between BS 8006 & FHWA.
Discusses suitable backfill soils, shear strength properties, and lateral earth pressures.
Focus on Rankine's theory of lateral earth pressures and Coulomb's equation for wall design.
Describes design loads, external stability calculations, including load combinations relevant to BS 8006.
Analyzes forces affecting reinforcement layers, including bridge abutments and horizontal loads.
Identifies typical safety factors, bearing capacity of shallow foundations on reinforced soils.
Covers requirements for good foundations, types of failures related to bearing capacities.
Presents basic guidelines for foundation engineering along with potential failure modes.
Discusses the brief history of MSE walls in India along with objectives for construction.
Outlines expected problems and rationale behind choices made for wall construction methods.
Details adopted systems, reinforcement used, and overall design calculations.
Summarization of wall construction phases and concludes the presentation with final insights.
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Reinforced soil structures
- 1. REINFORCED SOIL STRUCTURES Prof.E.Saibaba Reddy B.Tech, M.E.(Hons) Roorkee, Ph.D (Nottingham, UK) Post Doc,(Halifax Canada), Post Doc (Birmingham UK) & Eadala Rakesh Reddy B.Tech (JNTUH), M.Tech (VSSUT-Gold Medal), (Ph.D)- Andhra University-DST-Inspire Fellow Chief Consultant –EE Engineering Construction Services 1
- 2. NEED FOR RETAININGWALLS 2
- 3. TYPES OF RETAININGWALLS 3
- 4. TYPES OF RETAININGWALLS 4
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- 8. SOIL NAILING ANDSECANT PILING 8
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- 14. BASIC PRINCIPLE OFREINFORCED SOIL 14
- 15. COMPONENTS OF REINFORCEDSOIL RETAINING WALLS 15
- 16. TYPES OF WALLFACINGS IN REINFORCED SOIL WALLS 16
- 17. DIFFERENT TYPES OFREINFORCEMENT 17
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- 19. DIFFERENCES BETWEEN REINFORCEDSOIL WALLS AND CONVENTIONAL WALLS 19
- 20. DIFFERENT TYPES OFWALL CONFIGURATIONS 20
- 21. DIFFERENT TYPES OFWALL CONFIGURATIONS 21
- 22. DIFFERENT TYPES OFRETAINING WALLS BUILT IN INDIA 22
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- 24. SCHEMATIC OF CONSTRUCTIONPROCEDURE OF FULL HEIGHT PANEL WALL 24
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- 28. DIFFERENTIAL SETTLEMENT OFAPPROACH ROAD 28
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- 41. CODES AND DESIGNSTANDARDS FOR THE REINFORCED SOIL RETAINING WALLS 41
- 42. MAJOR DIFFERENCES BETWEENBS 8006 & FHWA 42
- 43. SUITABLE TYPE OFBACKFILL SOILS 43
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- 46. RANKINE LATERAL EARTHPRESSURES 46
- 47. RANKINE’S THEORY –SLOPED FILL 47
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- 55. LOAD COMBINATIONS INBS 8006 55
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- 57. FORCES IN REINFORCEDSOIL DUE TO BRIDGE ABUTMENT 57
- 58. FORCES IN REINFORCEMENTLAYERS DUE TO HORIZONTAL LOAD 58
- 59. FORCE TRANSFERRED TOREINFORCEMENT LAYERS 59
- 60. PEAK REINFORCEMENT FORCES& THE LOCATION OF THE INTERNAL RUPTURE SURFACE 60
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- 65. TYPICAL FACTORS OFSAFETY 65
- 66. BEARING CAPACITY OFSHALLOW FOUNDATIONS SUPPORTED ON REINFORCED SOILS Prof. E.Saibaba Reddy B.Tech, M.E.(Hons) Roorkee, Ph.D (Nottingham, UK) Post Doc,(Halifax Canada), Post Doc (Birmingham UK) & Eadala Rakesh Reddy B.Tech (JNTUH), M.Tech (VSSUT-Gold Medal), (Ph.D)- Andhra University-DST-Inspire Fellow Chief Consultant –EE Engineering Construction Services 66
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- 68. REQUIREMENTS OF AGOOD FOUNDATION 68
- 69. SOIL FAILURE DUETO LOADING FROM STRIP FOOTING 69
- 70. TYPES OF BEARINGCAPACITY FAILURES 70
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- 85. FACTORS TO BECONSIDERED 85
- 86. POSSIBLE MODES OFFAILURE 86
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- 88. Prof. E.Saibaba Reddy B.Tech,M.E.(Hons) Roorkee, Ph.D (Nottingham, UK) Post Doc,(Halifax Canada), Post Doc (Birmingham UK) & Eadala Rakesh Reddy B.Tech (JNTUH), M.Tech (VSSUT-Gold Medal), (Ph.D)- Andhra University-DST-Inspire Fellow Chief Consultant –EE Engineering Construction Services 88
- 89. BRIEF HISTORY OFMSE WALLS IN INDIA 89
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- 92. OBJECTIVES OF THECONSTRUCTION 92
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- 96. REASONS FOR THECHOICE 96
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- 102. ADDITIONAL STRESS ONBOTTOM WALL AS PER FHWA GUIDELINES 102
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