Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Material selection requirements for civil structures
The current range of structural steel products available in Europe is reviewed, together with their material qualities and typical costs. The factors influencing choice of steel grade are discussed. The development of Charpy selection values in UK steel building and bridge codes is described and the latest rules are compared with the new European brittle fracture rules for steel structures. The criteria for the selection of through-thickness properties are discussed with reference to the new European welding and design codes. The main conclusions are: i) The choice of products and material qualities available for steel construction is extensive. ii) It is important that designers consult fabricators and steel suppliers before deciding on some of the ordering options available. iii) Availability may be as important a factor as cost. iv) Caution needs to be exercised when exploring the benefits of moving to high strength steels for general structural use. v) There may be an economic case for moving from JR to JO or J2 impact quality for the base level of general structural steel. vi) Development of Charpy selection rules is a complex issue and there are still some fundamental engineering issues to be resolved, namely: the role of residual stresses; the influence of construction detail and stress concentrations; the use of material at temperatures well below the Charpy test temperature. vii) It is important to leave the choice of Z quality testing to the fabricator except in very severe cases. viii) It is important to specify a minimum mandatory level of inspection, including targeted NDT, after fabrication particularly for fatigue prone structures such as bridges. ix) Safe life design should be sought for civil structures, in view of the potential high cost of in-service inspection.
Material selection requirements for civil structures
The current range of structural steel products available in Europe is reviewed, together with their material qualities and typical costs. The factors influencing choice of steel grade are discussed. The development of Charpy selection values in UK steel building and bridge codes is described and the latest rules are compared with the new European brittle fracture rules for steel structures. The criteria for the selection of through-thickness properties are discussed with reference to the new European welding and design codes. The main conclusions are: i) The choice of products and material qualities available for steel construction is extensive. ii) It is important that designers consult fabricators and steel suppliers before deciding on some of the ordering options available. iii) Availability may be as important a factor as cost. iv) Caution needs to be exercised when exploring the benefits of moving to high strength steels for general structural use. v) There may be an economic case for moving from JR to JO or J2 impact quality for the base level of general structural steel. vi) Development of Charpy selection rules is a complex issue and there are still some fundamental engineering issues to be resolved, namely: the role of residual stresses; the influence of construction detail and stress concentrations; the use of material at temperatures well below the Charpy test temperature. vii) It is important to leave the choice of Z quality testing to the fabricator except in very severe cases. viii) It is important to specify a minimum mandatory level of inspection, including targeted NDT, after fabrication particularly for fatigue prone structures such as bridges. ix) Safe life design should be sought for civil structures, in view of the potential high cost of in-service inspection.
Material selection requirements for civil structures
Ogle, M.H. (Autor:in) / Burdekin, F.M. (Autor:in) / Hadley, I. (Autor:in)
2003
29 Seiten, 2 Bilder, 18 Tabellen, 25 Quellen
Aufsatz (Konferenz)
Englisch
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