Fatigue Design Stresses for Weathering Steel Structures

2009 ◽  
pp. 445-445-27 ◽  
Author(s):  
P Albrecht
Keyword(s):  
Steel Structures ◽  
Weathering Steel ◽  
Fatigue Design

Background for New Revision of DNV-RP-C203 Fatigue Design of Offshore Steel Structures

2010 ◽  
Author(s):  
Inge Lotsberg
Keyword(s):  
Steel Structures ◽  
Electronic Version ◽  
Fatigue Assessment ◽  
Fatigue Design ◽  
Different Types ◽  
Background Material ◽  
Made In

The DNV-RP-C203 Fatigue Design of Offshore Steel Structures is being used by a number of different companies for fatigue assessment of different types of structures. This has resulted in questions to DNV about background for the different sections in the document. It is therefore important that the basis for this document is open to the industry. Quite a lot of the background material has also been published earlier at conferences and in journals. In some situations it has been found that the content can be improved to better suite the industry. The document is presented in an electronic version making revisions easy. Therefore it has been revised several times since the last official presentation of a revision in 2005. The present paper gives an overview of the most significant changes made in the document since the 2005 revision. Some of these changes are already included in the present version of DNV-RP-C203. The remaining changes will be included in a revision dated 2010.

Uncertainties in the fatigue design of offshore steel structures

1991 ◽  
Vol 4 (4) ◽  
pp. 317-332 ◽  
Author(s):  
A. Pittaluga ◽  
R. Cazzulo ◽  
P. Romeo
Keyword(s):  
Steel Structures ◽  
Fatigue Design

Corrosive Environment Factors and their Influence on the Development of Weathering Steel Corrosion Products

2020 ◽  
Vol 832 ◽  
pp. 137-146
Author(s):  
Monika Kubzová ◽  
Vit Křivý ◽  
Viktor Urban ◽  
Katerina Kreislova
Keyword(s):  
Atmospheric Corrosion ◽  
Steel Surface ◽  
Protective Layer ◽  
Steel Structures ◽  
Corrosion Products ◽  
Outdoor Environment ◽  
Weathering Steel ◽  
Low Alloy Steels ◽  
Time Of Wetness ◽  
The Impact

This article deals with the topic of atmospheric corrosion. Atmospheric corrosion causes damage to nearly 80% of all existing steel structures. The main parameters of atmospheric corrosion are the time of wetness (TOW), air temperature and aggressive corrosive agents such as chlorides, sulfur dioxide and others. Currently, low alloy steels with improved atmospheric corrosion resistance called weathering steels are used for the steel structures located in outdoor environment. A protective layer of corrosion products is created on the steel surface and this layer can reduce continuation of corrosion of steel. The time of wetness together with the effect of aggressive corrosive agents are various for surfaces oriented vertically or horizontally. Experimental tests of atmospheric weathering steel were carried out to monitor the impact of location and position of surface on the different constructions. These tests allow monitoring the development of corrosion products in real exposures. The article presents a part of the research, which includes monitoring the development of the thickness of corrosion products with regard to the position on the structure. Research is developed to refine of prediction models with the aim of improving determination of corrosion losses during the service life of the structure. Second part of these experiments is dedicated to measuring the deposition rate of chlorides. Chlorides have a corrosive impact on the steel surface. Under normal conditions the chlorides does not create suitable environment for the development of a protective layer of corrosion products.

Background for Revision of DNV-RP-C203 Fatigue Analysis of Offshore Steel Structure

2005 ◽  
Author(s):  
Inge Lotsberg
Keyword(s):  
Steel Structure ◽  
Steel Structures ◽  
Offshore Structures ◽  
Fatigue Analysis ◽  
Time Interval ◽  
Fatigue Design ◽  
The World ◽  
New Research ◽  
Made In

The last revision of the DNV recommended practice “Fatigue Analysis of Offshore Steel Structures” is from October 2001. During use of this standard some feed back from designers around the world have been received. Also some new research in the area has been performed in the time interval from it was first developed. It is also realised that the document is being used for fatigue design of some other types of details and structures than was thought of when the document was originally developed. Therefore it was now found convenient to revise the document to incorporate the experience gained and new research and developments made in the area of fatigue of offshore structures the last 7 years since the main content for this recommended practice was developed.

Sign in / Sign up

Export Citation Format

Share Document