FOSTA
Extensive theoretical and practical investigations over the last thirty years in various industrialised countries on the load-bearing capacity of welded truss connections made of round and rectangular hollow sections …
Extensive theoretical and practical investigations over the last thirty years in various industrialised countries on the load-bearing capacity of welded truss connections made of round and rectangular hollow sections have shown that the design of these connections requires special knowledge of the rules of correct structural arrangements and design of welds, which clearly go beyond the general steel structures made of sheet metal and open sections. In addition to the stresses in the connecting seams of the filler bars with the chord bar, the stiffness and deformation behaviour dependent on the geometry of the profiles and the nodes are also of great importance.
When designing the hollow section truss, it is therefore necessary to pay particular attention to the geometric conditions in addition to calculating the component and weld stress according to the truss theory. In contrast to the design statements of welded hollow section truss connections under static loading, for which extensive research results are available and design recommendations and standards have already been developed in some countries on the basis of these investigations, the calculation methods for the design of hollow section truss nodes under fatigue and fatigue strength loading are inadequate. With regard to the knowledge of the fatigue strength of hollow section connections, the current status can be summarised as follows: 1. sufficient information is available on the fatigue strength of round hollow section joints, which has been developed within the framework of research in the field of offshore engineering and crane construction. the design recommendations for fixed offshore platforms from API, Det Norske Veritas, Germanischer Lloyd and the crane construction regulation according to DIN 15018 should be mentioned. however, a comprehensive analysis of all test data and the resulting design method, which takes into account the special characteristics of the fatigue strength behaviour of round hollow section joints, has been lacking to date. 2) Within the framework of the European Offshore Steel Research Programme, numerous fatigue and fatigue strength tests on round hollow section joints have recently been completed. The new findings are to be integrated into the overall analysis of the existing data. 3. the fatigue behaviour of rectangular hollow section nodes was completely unexplored until recently. In 1975, with the financial support of the European Coal and Steel Community, CIDECT and the Studiengesellschaft für Anwendungstechnik von Eisen und Stahl e.V., a large test programme was started which, when completed in April 1980, provided essential data for the development of design procedures for rectangular hollow section nodes under fatigue loading. Since the influencing parameters are relatively numerous, it is difficult to understand the time and fatigue strength process in hollow section nodes when all influences are taken into account. To illustrate this, the influence of individual parameters on the fatigue strength was first shown. Later, the design method for the overall parameter influence was developed based on the prioritisation of individual parameters. STUDIENGESELLSCHAFT FÜR ANWENDUNGSTECHNIK VON EISEN UND STAHL e .V.
Machine-translated title and description. The document itself is in German.
Payment by card (Stripe) or invoice (DE, AT, CH). Download link by email: automatically after ordering by card, after order approval for invoice (valid for 30 days). Terms
Digital download
Payment by card (Stripe) or invoice (DE, AT, CH). Download link by email: automatically after ordering by card, after order approval for invoice (valid for 30 days). Terms
Other parts and editions as well as neighbouring documents of the same series.
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
available anytime
€50.00
excl. VAT
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
available anytime
€30.00
excl. VAT
P 08.1-2 - Fire behaviour of concrete-filled hollow steel sections and open steel sections with concrete encasement The aim of the present work was to record and evaluate fire tests carried out to date on concrete-filled hollow steel sections and open steel sections with concrete encasement and to draw up a test programme based on the results to date. During the research carried out - particularly in Germany and France - it was established that specific tests have only been carried out recently on hollow steel sections filled with concrete; tests on open steel sections with concrete encasement, on the other hand, were carried out more than 25 years ago, i.e. the status of the latter constructions is virtually unchanged compared with [1]. The recording and evaluation of existing fire test results therefore only covered hollow steel sections. Results from Germany (Federal Institute for Materials Testing (BAM), Berlin), France (Centre Scientifique et Technique du BAtiment (CSTB), Paris, and Centre Technique Industriel de la Construction Metallique (CTICM), Metz) and Great Britain (Fire Research Station (FRS), Boreham Wood) were used for this purpose. The publication [1] served as the source for the German test data. The results of the tests carried out in Great Britain and some of the tests carried out in France were taken from correspondence provided by the Studiengesellschaft für Anwendungstechnik von Eisen und Stahl e.V. (Study Association for Application Technology of Iron and Steel). The latter information is incomplete and is essentially limited to the tested profiles, their load and the fire resistance duration achieved. Other important details such as the quality of the steel and concrete and the knee lengths of the tested columns are only available in isolated cases. In particular, the above-mentioned sources lack temperature data. The test data taken from the correspondence can therefore only be analysed to a limited extent. The tests carried out in France in more recent times - which represent the majority of the tests recorded - are available in the form of standardised short reports from COMTUBE, the client of the above-mentioned investigations. These reports contain the most important data, but no information on the temperature-time curve of the test specimens. Complete test certificates from the CSTB are available for a few fire tests. Efforts to obtain complete test certificates from COMTUBE for all recent tests carried out in France were unfortunately unsuccessful. As already mentioned, most of the data collected is based on fire tests carried out in France. After an initial review and preliminary evaluation of the available results, the author undertook an information trip to the CSTB in Paris and CTICM in Metz in order to complete the collected data and to clarify open questions - in particular with regard to the static and thermal test conditions. Finally, it should be noted that the fire tests on concrete-filled hollow steel sections carried out on behalf of COMTUBE in France are continuing, so that further information can be expected in the form of the above-mentioned short reports. The present report is based on the status of September 1975 (last recorded test on 11 September 1975 at the CSTB). Publication: 1975 Authors: Prof. Dr.-Ing. K. Roik, Dipl.-Ing. R. Bergmann, Dr.-Ing. H. Bode, G. Wagenknecht
available anytime
€20.00
excl. VAT
P 08.2 - Load-bearing behaviour of steel columns in combination with concrete (open profiles) This paper contains the calculation and design of steel columns in concrete under compression and uniaxial bending. Some comments and design suggestions are also made for biaxial bending. Section 2 summarises international research work. Section 3 explains a calculation programme that is used for precise numerical calculation. Section 4 contains interaction relations and design proposals based on the European buckling stress curves. The proposed design procedure is explained using a number of examples. Numerous ultimate loads determined in accordance with Sections 3 and 4 are compared with foreign test results. A generally good agreement can be established Publication: 1976 Authors: J. Stanke
available anytime
€30.00
excl. VAT