Area One
Author : Alexis Ostapenko
Publisher :
Page : pages
File Size : 48,60 MB
Release : 1996
Category : Offshore structures
ISBN :
Author : Alexis Ostapenko
Publisher :
Page : pages
File Size : 48,60 MB
Release : 1996
Category : Offshore structures
ISBN :
Author : Alexis Ostapenko
Publisher :
Page : pages
File Size : 26,88 MB
Release : 1996
Category : Concrete
ISBN :
Abstract: "The moment-thrust-curvature (M-P-[phi]) relationship of grout-repaired dented tubular sections was studied by deriving formulas as functions of the level of deformation. Both materials, steel and concrete, were assumed to have bi-linear elastic-plastic stress-strain relationships except that the grout had no strength in tension and that its post-ultimate strain was limited by the crushing strain. Moreover, it was assumed that the strain distribution in the cross section was planar and that the axial strains in the steel shell and the grout core were fully compatible. By varying the location of the neutral axis and the value of curvature, the relationship between the axial load and curvature could be defined for a given load eccentricity. The ultimate load was given by the peak of the resultant curve. The method was applied to analyze six grouted test specimens: three dented and three undented. The resultant ultimate loads were compared with the test loads and the loads according to the formula proposed by Parsanejad. The method tended to give somewhat higher ultimate loads than the test loads. The method was then used to compute the ultimate loads for seven specimens planned in the testing program proposed for future research. A FORTRAN computer program was written to facilitate the iterative computations involved in the method."
Author : John D. Wood
Publisher :
Page : 71 pages
File Size : 49,24 MB
Release : 1993
Category : Drilling platforms
ISBN :
Abstract: "The structural integrity of offshore oil platforms is of concern because of the possible loss of life and ecological damage that may occur with a structural failure. Therefore, the platforms are nondestructively inspected on a periodic basis. Inspection of the platforms by conventional methods, such as, ultrasonic and magnetic particle testing, is a very labor intensive and costly procedure. Acoustic emission (AE) monitoring is a nondestructive test method that may reduce the cost of offshore evaluation of platforms. This report examines the AE characteristics of various stressed structural steels to determine the feasibility of utilizing the AE monitoring method for offshore applications. In this study, structural columns salvaged from offshore oil platforms as well as newly fabricated columns were tested. With the aid of long column, stub-column and four-point bend specimens, it has been shown that structural steels used for offshore applications exhibit bursts of acoustic emissions from the spalling of the brittle surface layers at the initiation of yielding. Therefore, overloading of a damaged column may be identified with the AE technique. The location of a damaged area on structural columns has also been successfully identified by utilizing the time of arrival analysis and triangulation methods."
Author : Phillip Tirabosco
Publisher :
Page : pages
File Size : 16,26 MB
Release : 1991
Category : Collisions at sea
ISBN :
Author : Dhruba J. Ghose
Publisher :
Page : 160 pages
File Size : 16,69 MB
Release : 1994
Category : Shipbuilding
ISBN :
Author : John V. Sharp
Publisher : John Wiley & Sons
Page : 368 pages
File Size : 40,35 MB
Release : 2021-04-06
Category : Technology & Engineering
ISBN : 1119633818
UNDERWATER INSPECTION AND REPAIR FOR OFFSHORE STRUCTURES Benefit from a much-needed, up-to-date handbook on underwater inspection and repair processes and technologies Underwater Inspection and Repair for Offshore Structures fills a gap in the literature to provide an overview of the inspection and repair processes for both steel and concrete offshore structures. Authors and noted experts on the topic John V. Sharp and Gerhard Esdal guide readers through the reasons why inspection and repair are performed and how both are linked to the management of structural integrity, statutory requirements, and various types of damage. The book addresses critical topics, including the execution and planning of inspection and repair, the tools and methods used, and their deployment underwater. The authors put particular focus on steel and concrete offshore oil and gas installations, but the content is also applicable to the substructures of offshore wind turbines. Underwater Inspection and Repair for Offshore Structures is complementary to the authors’ book Ageing and Life Extension of Offshore Structures, also from Wiley. This important book: Covers current inspection and monitoring techniques to evaluate existing structures Includes coverage of robotic (ROV) inspection and repair methods Provides an overview of repair and maintenance techniques applicable to the splash‐zone and underwater operations Written for engineers, designers, and safety auditors working with offshore structures. Underwater Inspection and Repair for Offshore Structures is a comprehensive resource for understanding how to effectively inspect and repair these vulnerable structures.
Author : Wayne A. Dunlap
Publisher :
Page : 260 pages
File Size : 23,79 MB
Release : 1993
Category : Drilling platforms
ISBN :
Author : Theodore V. Galambos
Publisher : John Wiley & Sons
Page : 952 pages
File Size : 15,62 MB
Release : 1998-06-15
Category : Technology & Engineering
ISBN : 9780471127420
This book provides simplified and refined procedures applicable to design and to accessing design limitations and offers guidance to design specifications, codes and standards currently applied to the stability of metal structures.
Author : Chryssostomos Chryssostomidis
Publisher : Pergamon
Page : 560 pages
File Size : 34,76 MB
Release : 1994
Category : Technology & Engineering
ISBN : 9780080419152
Author : National Science Foundation (U.S.). Civil Infrastructure Systems Task Group
Publisher :
Page : 60 pages
File Size : 49,58 MB
Release : 1993
Category : Engineering
ISBN :