
ARCTIC OFFSHORE ENGINEERING.
Title:
ARCTIC OFFSHORE ENGINEERING.
Author:
Palmer, Andrew C.
ISBN:
9789814368780
Personal Author:
Physical Description:
1 online resource (372 pages)
Contents:
Contents -- Foreword -- Preface -- 1. The Human Context -- 1.1 Introduction -- 1.2 The Peoples Native to the Arctic -- 1.3 Explorers -- 1.4 Developers -- 1.5 Outsiders -- Conclusion -- References -- 2. The Physical and Biological Environment -- 2.1 Climate -- 2.2 Permafrost and Land Ice -- 2.3 Sea Ice -- 2.3.1 Introduction -- 2.3.2 Oceanographic Context -- 2.3.3 The Structure of Ice -- 2.3.4 Ice Formation -- 2.4 Gathering Data about Sea Ice -- 2.4.1 Identifying Needs -- 2.4.2 Planning -- 2.4.3 Methods for Ice Thickness -- 2.4.4 Ice Movement -- 2.4.5 Ice Strength and Related Parameters -- 2.5 Biology -- References -- 3. Ice Mechanics -- 3.1 Introduction -- 3.2 Creep -- 3.3 Fracture -- 3.3.1 Introduction -- 3.3.2 Linear Elastic Fracture Mechanics -- 3.3.3 Nonlinear Fracture Mechanics -- 3.4 Elasticity -- 3.5 Plasticity -- 3.6 Broken Ice -- 3.7 In-situ Rubble Tests -- 3.7.1 Overview -- 3.7.2 The Direct Shear Test -- 3.7.3 The Punch Shear Test -- 3.7.4 The Pull Up Test -- 3.7.5 Summary of Results of in-situ Tests -- Pull up strengths -- Punch and direct shear strengths -- 3.7.6 Translation of Rubble Shear Strength into a Bearing Pressure (or pseudo crushing strength) -- 3.7.7 Confined Compression Test (indentation test) on Ice Rubble -- 3.8 Model Ice -- References -- 4. Ice Forces on Structures in the Sea -- 4.1 Introduction -- 4.2 Alternative Design Concepts -- 4.3 Ice Forces -- 4.4 Ice Forces on Vertical-sided Structures -- 4.4.1 Alternative Modes -- 4.4.2 Creep -- 4.4.3 Buckling -- 4.4.4 Crushing: A Simple but Incorrect Approach -- 4.4.5 Crushing: Evidence from Measurements -- 4.4.6 Crushing: Empirical Representations of the Data -- 4.4.7 Crushing: Theory -- 4.5 Sloping-sided Structures -- 4.5.1 Introduction -- 4.5.2 Mechanics of Ice Interaction with Sloping-sided Structures -- 4.5.3 Adfreeze Effects -- 4.5.4 Experimental and Full Scale Data.
4.5.5 Modifications for very Thick Ice -- 4.5.6 Velocity Effects -- 4.6 Local Ice Pressures -- 4.7 Ice Encroachment -- 4.8 Model Tests -- 4.9 Ice-induced Vibrations -- 4.10 Ice Load Measurements on Platforms -- Instrumenting the surrounding ice -- Measuring ice deceleration -- Foundation response -- Structure response using strain gauges -- Structure response using extensometers -- Structure response using accelerometers -- Structure/foundation response using tiltmeters -- Ice load cells and panels at the interface between ice and structure -- References -- 5. Broken Ice, Pressure Ridges and Ice Rubble -- 5.1 Introduction -- 5.2 Formation of Ridges -- Case 1: Ice fails and ramps downward -- Case 2: Ice fails and rides upwards -- Case 3: Ice rubble failure -- 5.3 Limit- Force Calculations -- 5.4 Multi-Year Ridges -- 5.4.1 Introduction -- 5.4.2 Ridge Breaking Analysis -- 5.5 Loads due to First-year Ridges -- 5.5.1 Introduction -- 5.5.2 Ridge Interaction with Vertical Structures -- 5.5.3 First-year Ridge Interaction on Upward Sloping Structures -- 5.5.4 First Year Ridge Interaction on Downward Sloping Structures -- 5.6 Structures in Shallow Water -- 5.6.1 Effects of Ice Rubble on Ice Loads -- 5.6.2 First-year Ridge Loads in Shallow Water -- 5.7 Multi-leg and Multi-hulled Platforms -- 5.7.1 Multi-leg (with Vertical Legs) -- 5.7.2 Multi-leg Structure with Conical Collars on the Legs -- 5.7.3 Multi-caisson Systems and Ice Barriers -- 5.8 Limit momentum (limit energy) Ice Loads -- 5.8.1 Principles and Application to a Vertical Structure -- 5.8.2 Sloping Structures -- 5.8.3 Iceberg Impact Loads -- References -- 6. Ice Forces on Floating Platforms -- 6.1 Introduction -- 6.2 Background to Use of Floaters in Sea Ice -- 6.3 Loads on Floaters in Unmanaged Ice -- 6.4 Loads on Floaters in Managed Ice -- 6.5 Calibration against the Kulluk Data.
6.6 Influencing Parameters -- Concentration -- Ice strength and thickness -- Pressured ice -- Effect of floe size -- 6.7 Typical Managed Ice Loads -- References -- 7. Arctic Marine Pipelines and Export Systems -- 7.1 Introduction -- 7.2 Seabed Ice Gouging -- 7.2.1 Introduction -- 7.2.2 Ice Gouging: The First Model -- 7.2.3 Ice Gouging: Gouge Infill by Seabed Sediment Transport -- 7.2.4 Ice Gouging: Subgouge Deformation -- 7.2.5 Ice Gouging: Alternative Routes to a Choice of Safe Gouge Depth -- 7.2.6 Methods for Minimising Required Trench Depth -- 7.3 Strudel Scour -- 7.4 Construction -- 7.4.1 Introduction -- 7.4.2 Panarctic Drake F-76 Pipeline -- 7.4.3 Northstar Pipeline -- 7.4.4 Oooguruk Pipeline -- 7.4.5 Nikaitchuq Pipeline -- 7.5 Transportation by Tanker -- References -- 8. Environmental Impact -- 8.1 Introduction -- 8.2 Oil in the Sea -- 8.2.1 Outside the Arctic -- 8.2.2 In the Arctic -- 8.3 Gas in the sea -- 8.4 Response and Oil cleanup -- 8.5 Effects of Structures on the Ice -- 8.6 Decommissioning -- References -- 9. Human Factors and Safety -- 9.1 Context -- 9.2 Psychological Factors -- 9.3 Physical Factors -- 9.4 Platform Safety and Evacuation -- 9.5 Safety during On-Ice Activities -- 9.5.1 Introduction -- 9.5.2 Safe Loads on an Ice Sheet -- 9.6 Platform Reliability and Safety Factors -- References -- Index of Geographical locations -- Index.
Abstract:
There is an increasing need to construct engineering structures in the Arctic seas. The requirement is principally generated by the oil and gas industry, because of the substantial reserves that are known to exist offshore in the Beaufort Sea, the Caspian Sea, the Barents Sea, the Pacific Ocean off the coast of Sakhalin, the Canadian Arctic, and almost certainly elsewhere. Structures have to withstand the severe environmental forces generated by sea ice, a subject that is developing rapidly but is still far from completely understood. Underwater pipelines have to be safe against ice gouging and strudel scour, but also have to be constructed safely and economically. The social and human environment has to be understood and respected.This important book intentionally takes a broad view, and vividly accounts for the many and often subtle interactions between the different factors. It is illustrated by case studies of actual projects.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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