Foundations, like the structures or equipment they support, are usually designed to meet certain serviceability and strength criteria. Serviceability conditions dictate that the foundation should perform such that under normal operating loads the structure or equipment it supports may fulfill its design purpose. These serviceability limitations are typically described by settlement or other motion limitations. The strength criteria have the purpose of insuring that the foundation has sufficient reserve strength to resist the occasionally large load that may be experienced due to extreme environmental forces or other sources. In most, but not all cases, the serviceability or settlement criteria and the strength criteria may be treated as unrelated design tasks. Serviceability is typically a long-term consideration for the foundation that may depend on time-dependent consolidation characteristics. Foundation strength, or bearing capacity, may be a short-term problem such as an embankment construction on an undrained clay foundation or a long-term problem in which the maximum foundation load may appear at some unknown time.

Bearing Capacity of Shallow Foundations

Ship-shaped offshore units are some of the more economical systems for the development of offshore oil and gas, and are often preferred in marginal fields These systems are especially attractive to develop oil and gas fields in deep and ultra-deep water areas and remote locations away from existing pipeline infrastructures Recently, the ship-shaped offshore units have been applied to near shore oil and gas terminals This 2007 text is an ideal reference on the technologies for design, building and operation of ship-shaped offshore units, within inevitable space requirements The book includes a range of topics, from the initial contracting strategy to decommissioning and the removal of the units concerned Coverage includes both fundamental theory and principles of the individual technologies This book will be useful to students who will be approaching the subject for the first time as well as designers working on the engineering for ship-shaped offshore installations

Ship-Shaped Offshore Installations : Design, Building, and Operation

Physical and finite element modeling of lateral stability of offshore skirted gravity structures subjected to iceberg impact load

The methods and approaches for calculating global ice loads on fixed offshore structures are critically reviewed. The review covers both the mechanical approaches used in load calculation and the p...

Ice Action on Fixed Offshore Structures-A State of the Art Review

The principal objective of this study is to examine techniques for the analysis and design of composite icewalls for arctic offshore structures. Previous investigators have conducted numerous tests of composite beam specimens and have developed sophisticated nonlinear finite element models. Conventional reinforced concrete design methods are applied to the problem, and a method for determining the stiffness of a composite icewall is presented and compared to experimental results. This method is used to create a linear finite element model of a two‐way icewall. This linear model is subjected to ice pressures determined by the contact area and the most severe load condition is identified. The model is also used to investigate the influence of the stiffness of the structure supporting the icewall. Shear strength is evaluated, and a new scheme for integrating shear reinforcement, plate stiffening, and shear connection is presented. This scheme allows shallow section depths because the need for welder access i...

Brian J. Watt

Papers

Selection of Local Design Ice Pressures for Arctic Systems

Stability of Arctic Gravity Structures