Bridge foundations and substructures Pdf book

Bridge foundations and substructures Product Specifications: Number of pages: 104 File format: PDF Book language: English

Bridge foundations and substructures

Product Specifications:

Number of pages: 104

File format: PDF Book language: English

CONTENTS

INTRODUCTION

1 Survey of current practice v

2 Objective of report V

3 Types of bridge V

4 Textbooks and references Vi

5 Acknowledgements Vii

CHAPTER 1 OVERALL PERSPECTWE

1.1 Design process and priorities 1

1.2 Bridge foundations in context of whole contract 2

1.3 Design for construction and maintenance 3

CHAPTER 2 THE SITE

2.1 Site reconnaissance and desk study 5

2.2 Influences of site on construction 6

2.3 Subsidence 9

2.4 Soils investigation 10

2.5 Groundwater 13

2.6 Advanced contract pile and plate bearing tests 15

CHAPTER 3 CATALOGUE OF SUBSTRUCTURES

3.1 General considerations 17

3.2 Wall abutments 18

3.3 Open abutments 21

3.4 Strutted, portal and box structures 23

3.5 Abutments above highly compressible strata 26

3.6 Wing walls 27

3.7 Other substructures 30

3.8 Piers 31

CHAPTER 4 CHOICE OF FOUNDATION

4.1 Choice of footings or piles 33

4.2 Differential settlement criteria 36

4.3 Ground improvement 37

CHAFFER 5 SPREAD FOOTINGS

5.1 Global behaviour 39

5.2 Loading on substructures and foundations 41

5.3 Undrained and drained behaviour 42

5.4 Bearing pressure 43

5.5 Movements 45

CHAPTER 6 ABUTMENT EARTH PRESSURES AND STABILITY

6.1 Active and at-rest earth pressures 47

6.2 Passive pressure 51

6.3 Skeleton (‘open’ or ‘spill-through’) abutments 51

6.4 Buried structures 52

6.5 Stability of retaining walls 53

CHAPTER 7 PILE FOUNDATIONS

7.1 Global behaviour 55

7.2 Selection of pile types 58

7.3 Contract documents 59

7.4 Pile behaviour 60

7.5 Raking piles 62

7.6 Pile groups 63

7.7 Pile tests 65

CHAPTER 8 DETAILS

8.1 General comments 67

8.2 Excavation shape and shear-keys 68

8.3 Substructure form and reinforcement 69

8.4 Construction and movement joints 70

8.5 Top of abutment 71

8.6 Drainage and waterproof mg 72

8.7 Backfill and run-on slabs 73

CHAPTER 9 PERFORMANCE, MAINTENANCE AND REPAIR

9.1 Monitoring of performance 75

9.2 Inspection and maintenance considerations during design 76

9.3 Repairs 77

CHAPTER 10 ADVICE AND INFORMATION NEEDS

10.1 Dissemination of information 79

10.2 Advice and information needs 80

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