NCHRP Report 651: LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures
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NCHRP Report 651:
LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures
(2010)
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Overview

Authors

Description

TRB's National Cooperative Highway Research Program (NCHRP) Report 651: LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures explores recommended changes to Section 10 of the American Association of State Highway and Transportation Officials' Load Resistance Factor Design Bridge Design Specifications for the strength limit state design of shallow foundations.

Appendixes A through H for NCHRP Report 651 are available online.

• Appendix A: Alternative Model Background

• Appendix B: Findingsâ€"State of Practice, Serviceability and Databases

• Appendix C: Questionnaire Summary

• Appendix D: UML-GTR ShalFound07 Database

• Appendix E: UML-GTR RockFound07 Database

• Appendix F: Shallow Foundations Modes of Failure and Failure Criteria

• Appendix G: Bias Calculation Examples

• Appendix H: Design Examples

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Publication Info

149 pages | 8.5 x 11
Contents

Table of Contents

skim chapter
Front Matter i-ix
Summary 1-2
1.2 Engineering Design Methodologies 3-3
1.3 Load and Resistance Factor Design 4-9
1.4 Format for Design Factor Development 10-14
1.5 Bearing Capacity of Shallow Foundations 15-23
1.6 An Alternative Approach and Method of Analysis for Limit State Design of Shallow Foundations 24-32
1.7 Bearing Capacity of Shallow Foundations on Rock 33-39
1.8 Rock Classification and Properties 40-51
2.2 Methodology 52-55
2.3 Execution and Presentation 56-56
3.1 Design and Construction State of Practice 57-60
3.2 Assembled Databases 61-65
3.3 Determination of the Measured Strength Limit State for Foundations Under Vertical-Centric Loading 66-68
3.4 Determination of the Calculated Strength Limit States for the Case Histories (Foundations on Soils) 69-72
3.5 Uncertainty in the Bearing Capacity of Footings in/on Granular Soils Subjected to Vertical-Centric Loading 73-75
3.6 Uncertainty in the Bearing Capacity of Footings in/on Granular Soils Subjected to Vertical-Eccentric, Inclined-Centric, and Inclined-Eccentric Loading 76-81
3.7 Loading Direction Effect for Inclined-Eccentric Loading 82-84
3.8 Uncertainty in the Bearing Capacity of Footings in/on Rock 85-91
3.9 Uncertainties in the Friction Along the Soil-Structure Interface 92-99
4.2 Uncertainty in Vertical and Lateral Loading 100-103
4.3 Calibration Methodology 104-106
4.4 Examination of the Factor N as a Source of Uncertainty in Bearing Capacity Analysis 107-109
4.6 In-Depth Re-Examination of the Uncertainty in Bearing Capacity of Footings in/on Granular Soils Under Vertical-Centric Loading 110-115
4.7 In-Depth Re-Examination of the Uncertainty in Bearing Capacity of Footings in/on Granular Soils Under Vertical-Eccentric Loading 116-120
4.8 In-Depth Re-Examination of the Uncertainty in Bearing Capacity of Footings in/on Granular Soils Under Inclined-Centric Loading 121-122
4.9 In-Depth Re-Examination of the Uncertainty in Bearing Capacity of Footings in/on Granular Soils Under Inclined-Eccentric Loading 123-123
4.11 Goodman's (1989) Semi-Empirical Bearing Capacity Method for Footings in/on Rock 124-125
4.12 Carter and Kulhawy's (1988) Semi-Empirical Bearing Capacity Method for Footings in/on Rock 126-126
4.14 Sliding Friction Resistance 127-129
5.3 Examples Summary 130-131
References 132-138
Unpublished Material 139-139
Abbreviations used without definitions in TRB publications 140-140

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