مرزهای ژئوتکنیک دریایی II ۲۰۱۰
Frontiers in Offshore Geotechnics II 2010

1. Front Cover

2. Table of Contents

3. Preface

4. Committees

5. Reviewers

1 Keynotes

7. A systematic approach to offshore engineering for multiple-project developments in geohazardous areas

8. Recommended best practice for geotechnical site characterisation of cohesive offshore sediments

9. Gulf of Guinea deepwater sediments: Geotechnical properties, design issues and installation experiences

10. Geotechnics for subsea pipelines

11. Axial and lateral pile design in carbonate soils

12. New frontiers for centrifuge modelling in offshore geotechnics

13. Risk and reliability on the frontier of offshore geotechnics

2 Geohazards and gas hydrates

15. Neotectonic deformation of northwestern Australia: Implications for oil and gas development

16. Deepwater Angola part I: Geohazard mitigation

17. Deepwater Angola part II: Geotechnical challenges

18. Shallow gas hazard linked to worldwide delta environments

19. Analysis of submarine flow slides in fine silty sand

20. Hydrate dissociation around oil exploration infrastructure

21. An investigation of past mass movement events in theWest Nile Delta

22. Deformation of seabed due to exploitation of methane hydrate reservoir

3 In situ site characterisation and pore pressure measurement

24. A site investigation strategy to obtain fast-track shear strength design parameters in deep water soils

25. Enhancement of the ball penetrometer test with pore pressure measurements

26. Laboratory free falling penetrometer test into clay

27. Offshore sediment overpressures: Overview of mechanisms, measurement and modeling

28. Angolan deepwater soil conditions: GIS technology development for sediment characterization

29. Strength measurement in very soft upper seabed sediments

30. CPT in polar snow – preliminary observations

31. Parametric study of a free-falling penetrometer in clay-like soils

32. The future of deepwater site investigation: Seabed drilling technology?

33. Mini T-bar testing at shallow penetration

34. Piezometer installation in deepwater Norwegian Sea

35. Luva deepwater site investigation programme and findings

36. Investigations into novel shallow penetrometers for fine-grained soils

37. Seabed drilling vs surface drilling – a comparison

4 Soil characterisation and modelling

39. Rheological behaviour of soft clays

40. A three-dimensional finite element study of the direct simple shear test

41. Repeated loading and unloading of the seabed

42. A new interpretation of the simple shear test

43. Physical modelling of the crushing behaviour of granular materials

44. New evidence for the origin and behaviour of deep ocean ‘crusts’

45. Soil unit weight estimated from CPTu in offshore soils

46. Strain rate dependent simple shear behaviour of deepwater sediments in offshore Angola

47. Simplified calibration procedure for a high-cycle accumulation model based on cyclic triaxial tests on 22 sands

48. Understanding cyclic loading behavior of soil for offshore applications

5 Shallow foundations

50. Observations of shallow skirted foundations under transient and sustained uplift

51. Numerical study of grillage foundations on sand under combined VHM loading

52. The vertical bearing capacity of grillage foundations in sand

53. Behaviour of skirted footings on sand overlying clay

54. Numerical study of piping limits for suction installation of offshore skirted foundations and anchors in layered sand

55. Shallow foundation performance in a calcareous sand

56. A numerical study of the vertical bearing capacity of skirted foundations

57. The effect of torsion on the sliding resistance of rectangular foundations

58. Foundation design challenges of the MCR-A skirted gravity platform

59. Constructing breakwater with prefabricated caissons on soft clay

6 Piled foundations

61. Simplified analysis of laterally loaded pile groups

62. Behavior of piles under combined lateral and axial loading

63. Investigations on the behavior of large diameter piles under cyclic lateral loading

64. BP Clair phase 1 – Pile driveability and capacity in extremely hard till

65. Photoelastic investigation into plugging of open ended piles

66. Soil-pile interaction during extrusion of an initially deformed pile

67. BP Clair phase 1 – Geotechnical assurance of driven piled foundations in extremely hard till

68. Pile driving experiences in Persian Gulf calcareous sands

69. FLAC3D analysis on soil moving through piles

70. Cyclic loading of barrettes in soft calcareous rock using Osterberg cells

71. Shaft capacity of drilled and grouted piles in calcareous sandstone

72. Numerical analysis of mudmat contribution to capacity of piled offshore platforms

73. Simplified numerical model for analysis of offshore piles under cyclic lateral loading

74. Centrifuge modelling of rapid load tests with piles in silt and sand

75. Field measurements on monopile Dolphins

76. Behaviour of driven tubular steel piles in calcarenite for a marine jetty in Fujairah, United Arab Emirates

77. CPT-Based design method for axial capacity of offshore piles in clays

7 Foundations for renewable energy

79. Evaluation of pile capacity approaches with respect to piles for wind energy foundations in the North Sea

80. Installation of suction caissons for offshore renewable energy structures

81. Lateral behaviour of large diameter monopiles at Sheringham Shoal Wind Farm

82. Centrifuge modelling of offshore monopile foundation

83. Gravity based foundations for the Rødsand 2 offshore wind farm, Denmark

84. Geotechnics for developing offshore renewable energy in the US

85. Engineering issues for fixed offshore wind turbines on Lake Michigan Mid Lake Plateau, USA

86. Centrifuge model tests on piled footings in clay for offshore wind turbines

87. Design of monopile foundations in sand for offshore windfarms

88. Experimental evaluation of backfill in scour holes around offshore monopiles

89. An investigation of the use of a bearing plate to enhance the lateral capacity of monopile foundations

90. Optimizing site investigations and pile design for wind farms using geostatistical methods: A case study

91. Towards the FE prediction of permanent deformations of offshore wind power plant foundations using a high-cycle accumulation model

92. Cyclic accumulation effects at foundations for offshore wind turbines

93. Study on soil-structure interaction of suction caisson by large-scale model tests

8 Jack-up units

95. Simplified VH equations for foundation punch-through sand into clay

96. Characterisation of undrained shear strength using statistical methods

97. Centrifuge modelling of spudcan deep penetration in multi-layered soils

98. A probabilistic approach to the prediction of spudcan penetration of jack-up units

99. An assessment of jackup spudcan extraction

100. 3D FE analysis of the installation process of spudcan foundations

101. Undrained bearing capacity of deeply embedded foundations under general loading

9 Anchoring systems

103. Trajectory prediction for drag embedment anchors under out of plane loading

104. Setup following keying of plate anchors assessed through centrifuge tests in kaolin clay

105. Seismically-induced displacements of a suction caisson in soft clay

106. SEPLA keying prediction method based on full-scale offshore tests

107. Set-up of suction piles in deepwater Gulf of Guinea clays

108. Centrifuge testing of suction piles in deepwater Nigeria clay – Effect of stiffeners and set-up time

109. Numerical FEM and laboratory study of the bearing capacity factor Nc for plate anchors

110. Caisson capacity in clay: VHM resistance envelope – Part 2: VHM envelope equation and design procedures

111. Installation and in-place assessment of drag anchors in carbonate soil

112. Caisson capacity in clay: VHM resistance envelope – Part 1: 3D FEM numerical study

113. Numerical investigation of the behaviour of suction caissons in structured clays

114. Cyclic moment loading of suction caissons in sand

10 Pipelines and risers

116. Multidirectional analysis of pipeline-soil interaction in clay

117. Geotechnical challenges for deepwater pipeline design – SAFEBUCK JIP

118. Large deformation finite element analysis of vertical penetration of pipelines in seabed

119. Implementation of geotechnical techniques in the analysis of pipeline response

120. Lateral soil resistance to an untrenched pipeline under the action of ocean currents

121. Vertical cyclic testing of model steel catenary riser at large scale

122. Kupe gas project pipeline – optimisation of discrete rock berm design shore approach

123. Model test studies on soil restraint to pipelines buried in sand

124. Pipe-soil interaction on clay with a variable shear strength profile

125. Sweeping behaviour of shallowly-embedded pipeline during cyclic lateral movement

126. Advanced nonlinear hysteretic seabed model for dynamic fatigue analysis of steel catenary risers

127. Mobilization distance in uplift resistance modeling of pipelines

128. Theoretical, numerical and field studies of offshore pipeline sleeper crossings

129. Observations of pipe-soil response from the first deep water deployment of the SMARTPIPE®

11 Trenching, ploughing, excavation and burial

131. Influence of object geometry on penetration into the seabed

132. Investigation into the effect of forecutters on plough performance

133. State-of-the-art jet trenching analysis in stiff clays

134. Numerical modelling of soil around offshore pipeline plough shares

135. Anchor–chain–rockfill–soil interaction: Evolution of design methods

136. Development of a jet trenching model in sand

12 Design and risk

138. Structural factors affecting the system capacity of jacket pile foundations

139. The new API Recommended Practice for Geotechnical Engineering: RP 2GEO

140. Comparison of ISO 19901-2 and API RP 2A seismic design criteria for a site in the Caspian Sea, Turkmenistan

141. Offshore geotechnics – safe and sustainable

142. Back Cover