P 78 - lateral-torsional buckling of high-strength steels

P 86 2.2 - Fire behaviour of composite columns with consideration of the different column/beam connections The design and construction of composite columns - structural steel, concrete and reinforcing steel are rigidly bonded - at room temperature conditions has been regulated by DIN 18 806 Part 1 /25/. These columns are not included in DIN 4102 Part 4 /22/ - a catalogue of components divided into fire resistance classes - due to a lack of test experience. For this reason, a research project /1/ was carried out between 1978 and 1980 on behalf of the Studiengesellschaft für Anwendungstechnik von Eisen und Stahl e.V., Düsseldorf, with financial support from the European Coal and Steel Community, Brussels, by the Institute for Building Materials, Solid Construction and Fire Protection at the Technical University of Braunschweig, in which the fire behaviour of composite columns was investigated. These tests were carried out with precisely defined static support conditions - hinged or clamped. The exact definition of the support conditions is essential for a theoretical interpretation of the tests. In a fire protection assessment, however, their selection should also fulfil the conditions that exist in practice. This research report presents the results of tests on steel composite columns that were tested under practical storage conditions. A test set-up was developed that made it possible to realistically simulate the load-bearing and deformation behaviour of columns exposed to fire in building construction. The constraint stress resulting from the displacement of large floor systems under fire exposure could be taken into account. This research project was financially supported by the Studiengesellschaft für Anwendungstechnik von Eisen und Stahl e.V., Düsseldorf, and the Federal Ministry of Research and Technology, Bonn. Publication: 1985 Authors: Dipl.-Ing. R. Haß, Prof. Dr.-Ing. U. Quast

P 13 - Development of a measuring method for the determination of residual stresses in cold-formed profiles manufactured by roll forming Publication: 1978 Authors: Prof. Dr.-Ing. E. von Finckenstein, Dipl.-Ing. F. Milcke

P 10 - Overview and analysis of construction systems on the market Publication: 1975 Authors: Prof. Dr.-Ing. H. Weber, Dr.-Ing. A. Eisenblätter, Dipl.-Ing. H. W. Strunck

P 08.1 - Load-bearing behaviour of steel columns in combination with concrete (hollow sections) This paper contains the calculation and design of concrete-lined hollow section columns made of structural steel under compression and uniaxial bending. After a brief introduction, Section 2 summarises international research work in this field. In Section 3, a calculation programme is developed as an accurate numerical method. Section 4 contains interaction relations for the ultimate limit state for the whole range between centric compression and pure bending. Many results obtained with the described calculation programme and the interaction curves are compared with each other and with available test results; very good agreement can almost always be observed. Publication: 1975 Authors: Prof. Dr.-Ing. Roik, R. Bergmann, H. Bode, G. Wagenknecht