Geotechnical Aspects of Multi-Use Offshore Platforms

Contents
Preface

I OFFSHORE STRUCTURES: SELECTED GEOTECHNICAL PROBLEMS
   1 Offshore technology
      1.1 Classical offshore platforms
      1.2 Multi-use offshore platforms
      1.3 Foundations
      1.4 Design procedures
  2 Water-structure-seabed interactions
      2.1 Environmental forces
      2.2 Hydro-elasticity
      2.3 Water-seabed interactions
      2.4 Foundation-seabed interactions
   3 Basic properties of soils.
      3.1 Basic physical characteristics
      3.2 Initial state of soil
      3.3 Models of soils
      3.4 Determination of parameters
   4 Seabed liquefaction
      4.1 Practical problems
      4.2 Mechanisms of liquefaction
      4.3 Effects caused by cyclic loadings
      4.4 Liquefaction and cyclic mobility

II UNDERSTANDING LIQUEFACTION ENGINEERING ESTIMATES
   5 Simple cyclic shear liquefaction
      5.1 Initial conditions and necessary information
      5.2 Simplified procedure
   6 Liquefaction under triaxial conditions
      6.1. Stresses and strains
      6.2 Simplified analysis of cyclic loading liquefaction
   7 Liquefaction of a soil layer
      7.1 Basic equations
      7.2 Example
   8 Wave-induced pore-pressures and liquefaction of the seabed
      8.1 Laboratory investigations
      8.2 Seabed behavior
   9 Behavior of structures founded on liquefying seabed
      9.1 Sinking of objects in liquefied soil
      9.2 Behavior of a pile in weakening subsoil
      9.3 A strip foundation on weakening subsoil
   10 Suction forces and the breakout phenomenon
     10.1 1D model of breakout
     10.2 Application to suction caissons
   11 Geotechnical conditions at selected sites
     11.1 Kriegers Flak
     11.2 The Wadden Sea
     11.3 Mechanical properties of selected seabeds

Summary
References and bibliography
Author's Index
Subject Index