A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Measurement and interpretation of dynamic loads in bridges -Phase IV: Fatigue design of orthotropic steel decks of road bridges
Orthotropic steel decks am used in most of the world's major long span bridges where low deadweight is an important factor. They are also used in lifting bridges for the same reason and may provide an economic solution for some shorter span road and rail bridges. Orthotropic decks are not covered by most bridge design codes principally because the stress analysis and fatigue classification of the welded connections are too complex. One result of this lack of information and guidance on design has been the construction of a number of bridges which have experienced early fatigue failures of the welded connections in the deck. This in turn has resulted in expensive inspection and repair programmes and unfavourable publicity. It was the aim of this research programme to rectify this situation by confirming the fatigue classification of the welded connections, advising on good design detailing and giving guidance on the development of design rules. The particular objective of the project was to draw together and analyse existing data, to produce evidence to support the inclusion of orthotropic steel bridge decks in the European design code for steel structures, EC3. The method was to carry out a literature review and survey. A computer database was set up to store the information obtained- This was in four parts; Decrefs (386 records) with information about publications relating to orthotropic decks; Decclata (148 records, taken from 38 papers) with fatigue data from testing carried out on full scale orthotropic deck panels; Declist (384 records) with data on specific bridges; and Contacts (97 records) with details of organisations and individuals contacted for information. The majority of the full scale fatigue testing on orthotropic decks has been carried out by members of the working group. Some studies, including full scale fatigue tests, have been carried out in Japan, but very little data are given in published papers. The statistical analysis procedures used to derive the weld classes for Eurocode 3 and BS 5400 part 10 were used to place all of the main joints (except one) in the appropriate class, and to rank different designs of each joint. In addition, recommendations are made for both good joint designs and those to be avoided.
Measurement and interpretation of dynamic loads in bridges -Phase IV: Fatigue design of orthotropic steel decks of road bridges
Orthotropic steel decks am used in most of the world's major long span bridges where low deadweight is an important factor. They are also used in lifting bridges for the same reason and may provide an economic solution for some shorter span road and rail bridges. Orthotropic decks are not covered by most bridge design codes principally because the stress analysis and fatigue classification of the welded connections are too complex. One result of this lack of information and guidance on design has been the construction of a number of bridges which have experienced early fatigue failures of the welded connections in the deck. This in turn has resulted in expensive inspection and repair programmes and unfavourable publicity. It was the aim of this research programme to rectify this situation by confirming the fatigue classification of the welded connections, advising on good design detailing and giving guidance on the development of design rules. The particular objective of the project was to draw together and analyse existing data, to produce evidence to support the inclusion of orthotropic steel bridge decks in the European design code for steel structures, EC3. The method was to carry out a literature review and survey. A computer database was set up to store the information obtained- This was in four parts; Decrefs (386 records) with information about publications relating to orthotropic decks; Decclata (148 records, taken from 38 papers) with fatigue data from testing carried out on full scale orthotropic deck panels; Declist (384 records) with data on specific bridges; and Contacts (97 records) with details of organisations and individuals contacted for information. The majority of the full scale fatigue testing on orthotropic decks has been carried out by members of the working group. Some studies, including full scale fatigue tests, have been carried out in Japan, but very little data are given in published papers. The statistical analysis procedures used to derive the weld classes for Eurocode 3 and BS 5400 part 10 were used to place all of the main joints (except one) in the appropriate class, and to rank different designs of each joint. In addition, recommendations are made for both good joint designs and those to be avoided.
Measurement and interpretation of dynamic loads in bridges -Phase IV: Fatigue design of orthotropic steel decks of road bridges
Messung und Bewertung dynamischer Lasten in Brücken - Teil 4: ermüdungsgerechtes Konstruieren von orthotropischen Stahldecks von Strassenbrücken
Cuninghame, J.R. (author) / Stephens, V.A. (author) / Beales, C. (author)
1998
49 Seiten, 8 Bilder, 3 Tabellen, 8 Quellen
Report
English