Chapter 1: Introduction - ufc_3_220_01a0011

Table 1-1. General Design Methodology for Deep Foundations

Unusual Situations

Types of Deep Foundations

Figure 1-1. Timber pile splice and boot

Figure 1-2. Concrete pile splice and boot

Selection of Deep Foundations

Table 1-3: Standard H-piles; Dimensions and Properties

Figure 1-4. Drilled shaft details (1 in. = 25.4 mm)

Displacement

Nondisplacement

Table 1-4: Characteristics of Deep Foundations

Site and Soil Investigations

Figure 1-6. Driven pile applications

Figure 1-6. (Concluded)

Figure 1-7. Load resistance of drilled shafts in various soils

Table 1-5: Drilled Shaft Applications, Advantages, and Disadvantages

Site conditions - ufc_3_220_01a0028

Selection of Soil Parameters

Elastic Modulus

Figure 1-8. Variation Kcu for clay with respect to undrained shear strength and overconsolidation ratio

Chapter 2: Design Stresses

Table 2-1. Tolerances in Drilled Shaft Construction

Figure 2-1. Eccentric load on a pile group

Structural Design of Driven Piles

Figure 2-2. Limits to pile driving stresses

Table 2-3. Allowable Stresses for Supported Piles

Table 2-4: Allowable Concrete Stresses,Prestressed Concrete Piles

Table 2-5: Cast in Place and Mandrel-Driven Piles,Allowable Concrete Stresses

Table 2-7: Minimum Requirements for Drilled Shaft Design

Table 2-7: Minimum Requirements for Drilled Shaft Design -Cont. - ufc_3_220_01a0041

Table 2-7: Minimum Requirements for Drilled Shaft Design -Cont. - ufc_3_220_01a0042

Structural Design of Drilled Shafts

Chapter 3: Vertical Loads

Figure 3-1. Loading Support of Deep Foundation

Table 3-1. Vertical Load Analysis

Figure 3-2. Distribution of Skin Friction and The Associated Load Resistance

Figure 3-3. Critical Depth Ratio

Driven Piles

Table 3-2. Factors of Safety for Bearing Capacity

Table 3-3. General Design Procedure of a Driven Pile

Figure 3-5. Illustration of Input Parameters for Equatiion 3-7a

End Bearing Resistance

Figure 3-6. Variation of a and Bearing Capacity Factor

Figure 3-7. Variation of the Coefficient k

Figure 3-8: Ratio for Given Displacement Volume

Skin Friction Resistance

Table 3-4: Q by the Nordlund Method

Figure 3-10. Estimating Pile tip Capacity from CPT Data

Figure 3-11. Lambda Correlation Factor for Clay

Table 3-5: Adhesion Factos for Cohesive Soil

Figure 3-14: Sleeve Friction Factors for Sands

Drilled Shafts - ufc_3_220_01a0063

Figure 3-15:Driven Steel Pipe Pile

Table 3-6. Calculations of Vertical Loads in a Single Pile

Table 3-6. Calculations of Vertical Loads in a Single Pile -Cont. - ufc_3_220_01a0066

Table 3-6. Calculations of Vertical Loads in a Single Pile -Cont. - ufc_3_220_01a0067

Table 3-6. Calculations of Vertical Loads in a Single Pile -Cont. - ufc_3_220_01a0068

Table 3-6. Calculations of Vertical Loads in a Single Pile -Cont. - ufc_3_220_01a0069

Table 3-7. Design of a Drilled Shaft

Table 3-8. Adhesive Factors for Drilled Shafts in Cohesive Soil

Figure 3-17: Modulus Reduction Ratio

Vertical Capacity to Resist Other Loads

Figure 3-18. Elastic Modulus of Intact Rock

Downdrag

Computer Analysis

Figure 3-20. Deep Foundation Resisting Uplift Thrust

Figure 3-21. Deep Foundation Resisting Downdrag

Figure 3-22. Load-Transfer Curves Used in AXILTR

Elastic Method

Load Transfer Functions

Table 3-10. Empiral Tip Coefficient C.

Figure 3-23. General Load-Transfer Curves for Clay

Figure 3-24. Generated Load-Transfer Curves for Sand

Table 3-11. Application of Drilled Shaft Design

Table 3-11. Application of Drilled Shaft Design -Cont. - ufc_3_220_01a0086

Table 3-11. Application of Drilled Shaft Design -Cont. - ufc_3_220_01a0087

Table 3-11. Application of Drilled Shaft Design -Cont. - ufc_3_220_01a0088

Table 3-11. Application of Drilled Shaft Design -Cont. - ufc_3_220_01a0089

Chapter 4: Lateral Loads

Figure 4-1. Model of pile under lateral loading with p-y curves

Presence of Water

Development of p-y Curve for Soils

Figure 4-5. Wedge Type Failure of Surface Soil

Figure 4-6. Potential Failure Surfaces Generated by Pile at Several Diameters Below Ground Surface

Table 4-2. Representative Values of K for Stiff Clays

Table 4-3. Representative Values for Stiff Clays

Figure 4-8: Characteristics Shaped of p-y Curve for Static Loading in Stiff Clay Below the Water Table

Figure 4-10. Characteristics Shape of p-y Curve for Cyclic Loading in Stiff Clay Below Table

Figure 4-11. Characteristics Shape of p-y Curve for Static Loading in Stiff Clay Above the Water Table

Figure 4-12. Characteristic Shape of p-y Curve for Cyclic Loading in Stiff Clay Above the Water Table

Figure 4-13. Characteristics Shape of a Family of p-y Curves for Static and Cyclic Loading in Sand

Table 4-4. Nondimensional Coefficients for p-y Curves for Sand

Analytical Method

Table 4-5. Representative Values of k (Ib/cu in.) for Sand

Nondimensional Method of Analysis

Figure 4-16. Form of Variation of Soil Modulus with Depth

Pile Head Fixed Against Rotation (Case II)

Figure 4-17. Pile deflection produced by lateral load at mudline

Figure 4-18. Pile deflection produced by moment applied at mudline

Solution of Example Problem

Figure 4-19. Slope of pile caused by lateral load at mudline

Figure 4-20. Slope of pile caused by moment applied at mudline

Figure 4-21. Bending moment produced by lateral load at mudline

Figure 4-22. Bending moment produced by moment applied at mudline

Figure 4-23. Shear produced by lateral load at mudline

Figure 4-24. Shear produced by moment applied at mudline

Figure 4-25. Deflection of pile fixed against rotation at mudline

Study Soil Response

Figure 4-26. Soil-response curves

Solve for Deflection and Bending Moment

Figure 4-27. Graphical solution for relative stiffness factor

Apply global factor of safety

Status of the Technology

Figure 4-28. Comparison of deflection and bending moment from nondimensional and computer solutions

Chapter 5:Pile Groups

Figure 5-1. Groups of deep foundations

Design For Vertical Loads

Figure 5-2. Stress Zones in Soil Supporting Piles

Axial Capacity of Drive Pile Groups

Table 5-1: Equivalent Mat Method of Group Pile Capacity Failure in Soft Clays

Application - ufc_3_220_01a0132

Application-Cont.

Design for Lateral Loads

Figure 5-3. Typical Pile-Supported Bent

Computer Programs

Figure 5-4. Simplified structure showing coordinate systems and sign conventions

Figure 5-5. Set of pile resistance functions for a given pile

Computer Programs -Cont.

Figure 5-7. Interaction diagram of reinforced concrete pile

Table 5-3: Values of Loading Employed in Analyses

Figure 5-9. Pile Loading

Table 5-5. Computed Movements and Loads at Pile Heads

Computer Assisted Analysis

Chapter 6: Verification of Design

Table 6-1: Procedure for Verifying Design and Structural Integrity of Driven Piles

Figure 6-1. Schematic of wave equation model

Pile driving analysis

Figure 6-2: Schematic of Field Pile Driving Analyzer Equipment

CAPWAPC method

Drilled Shafts - ufc_3_220_01a0151

Figure 6-3. Example results of CAPWAPC analysis

Placement of reinforcement

Nondestructive tests

Access tubes and down-hole instruments

Load Tests

Standard load test

Effects of layered soils

Figure 6-4. Typical Osterberg cell load test (from Osterberg 1995)

Table 6-4: Methods of Estimating Ultimate Pile Capacity from Load Test Data

Table 6-4: Methods of Estimating Ultimate Pile Capacity from Load Test Data -Cont.

Appendix A: References and Bibliography

Appendix A: References and Bibliography -Cont. - ufc_3_220_01a0163

Appendix A: References and Bibliography -Cont. - ufc_3_220_01a0164

Appendix A: References and Bibliography -Cont. - ufc_3_220_01a0165

Appendix A: References and Bibliography -Cont. - ufc_3_220_01a0166

Appendix A: References and Bibliography -Cont. - ufc_3_220_01a0167

Appendix A: References and Bibliography -Cont. - ufc_3_220_01a0168

Appendix B: Pipe Piles

Table B-1: Dimensions and Properties for Design of Pipe Piles

Table B-1: Dimensions and Properties for Design of Pipe Piles -Cont. - ufc_3_220_01a0171

Table B-1: Dimensions and Properties for Design of Pipe Piles -Cont. - ufc_3_220_01a0172

Table B-1: Dimensions and Properties for Design of Pipe Piles -Cont. - ufc_3_220_01a0173

Appendix C: Computer Program Axiltr

Table C-2: Description of Input Parameter

Table C-2: Description of Input Parameter -Cont.

Application - ufc_3_220_01a0177

Figure C-1. Schematic diagram of soil and pile elements

Table C-3. Output Data

Table C-3. Output Data -Cont.

Load-transfer models

Figure C-2. Plotted output for pullout and uplift problems

Table C-4: Listing of Data Input for Expansive Soil, File DATLR.TXT

Figure C-3. Plotted output for drowndrag problem

Figure C-3. (Concluded)

Table C-5: Listing of Output for Pullent and Uplift Problem

Table C-5: Listing of Output for Pullent and Uplift Problem -Cont.

Table C-5 (Concluded)

Table C-6. Listing of Data Input for Settling Soil

Table C-6. Listing of Data Input for Settling Soil -Cont. - ufc_3_220_01a0190

Table C-6. Listing of Data Input for Settling Soil -Cont. - ufc_3_220_01a0191

Table C-6. Listing of Data Input for Settling Soil -Cont. - ufc_3_220_01a0192

Table C-6. Listing of Data Input for Settling Soil -Cont. - ufc_3_220_01a0193

Appendix D:Modification of p-y Curves for Battered Piles

Figure D1: Modification of p-y Curves for Battered Piles

Integrated Publishing, Inc. |