Design of Offshore Concrete Structures

Design of Offshore Concrete Structures......Page 2
In memoriam Ivar Holand......Page 6
Preface......Page 8
Contents......Page 4
1.1 Historical overview......Page 10
Table of Contents......Page 0
1.2.1 Cylindrical tanks......Page 11
1.2.5 New concepts......Page 12
1.4.2 Global analysis......Page 16
1.5 Construction methods......Page 17
1.6.2 Standards......Page 18
1.6.5 Development of codes and standards......Page 19
1.8 Durability......Page 20
1.10 Removal. Demolition. Recycling......Page 21
References......Page 22
2.2 General description of an offshore concrete structure......Page 26
2.4 Rules and regulations......Page 29
2.5.1 Project planning......Page 30
2.5.2 The project control basis......Page 31
2.6.1 Early phase activities......Page 41
2.6.3 Design of concrete structures in the early phases, examples......Page 45
2.7.1 Concept report......Page 47
2.7.2 Technical work......Page 48
2.7.3 Quality assurance and verification......Page 49
2.8.2 Contract......Page 50
2.8.4 Verification plan......Page 52
References......Page 53
3.2.1 Analysis for detail design......Page 54
3.2.2 Simplified analysis scheme......Page 55
3.3.2 Load effects......Page 59
3.4.1 Model for global response analysis......Page 60
3.4.2 Models for local load effects......Page 69
3.5.2 System description......Page 71
3.5.3 Global static analysis......Page 75
3.5.4 Global natural period......Page 83
3.5.5 First order wave......Page 86
3.6.3 Impact mechanics......Page 92
3.6.4 Catenary anchored floater......Page 95
3.6.5 Tension leg platform......Page 97
3.7.2 Beam stiffness of shaft......Page 101
3.7.3 Planar structural elements......Page 103
3.7.4 Circular cylindrical shell......Page 104
3.7.5 Rigid body rotation of a floating structure......Page 105
Further reading......Page 106
References......Page 107
4.1 Objective......Page 108
4.2.1 Description of methods......Page 109
4.2.3 Modelling and element meshes for shell surfaces......Page 111
4.2.5 Examples of accuracy studies......Page 112
4.3 From linear analysis to design......Page 116
4.4 Postprocessing......Page 122
4.5.2 Fracture mechanics......Page 123
4.6.1 Verification methods......Page 124
4.6.2 Checklists......Page 125
References......Page 126
5.1 Typical structures and structural parts......Page 128
5.2 Design documents......Page 129
5.3.2 Postprocessor......Page 140
5.3.3 Effect of water pressure in cracked concrete......Page 147
5.3.4 Discontinuity areas......Page 152
5.3.5 Ship collision and falling objects......Page 159
5.3.7 Prestressing......Page 160
5.4.2 Minimum surface reinforcement......Page 162
5.4.3 Minimum transverse reinforcement......Page 163
5.4.4 Reinforcement layout and detailing......Page 164
References......Page 167
6.1.2 Special features of engineering and design of concrete structures at sea......Page 169
6.1.3 Vocabulary......Page 170
6.2.1 Reference requirements......Page 171
6.2.2 The three basic principles of Quality Assurance......Page 172
6.3.2 Some important QA-elements and QA-tools in engineering and design......Page 174
6.3.3 Quality Assurance elements related to the main activities in engineering and design......Page 179
7.1 Introduction......Page 182
7.2 Norwegian Petroleum Directorate requirements......Page 183
7.3.2 Level1: Document review......Page 185
7.3.6 Choice of verification level......Page 186
7.4.1 Alternatives in external verification......Page 187
7.5 Internal verification......Page 188
7.6.2 Reporting of non-conformances......Page 191
7.7.3 Requirements for engineers......Page 194
7.8.3 Verification of design waves......Page 195
7.8.5 Verification of design loads combinations......Page 196
References......Page 197
Appendices......Page 198
Appendix A Discipline Activity Model......Page 199
Appendix B Discipline Check (DC)......Page 209
Appendix C Inter Discipline Check (IDC)......Page 211
Appendix D Verification......Page 213
Appendix E Design Review (DR)......Page 217
Appendix F Hazard and Operability Analysis (HAZOP)......Page 219
Appendix G Worst-Case Analysis......Page 221
Appendix H Quality Audit/Quality System Audit......Page 223