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- Hybrid testing (1) (entfernen)
Originally introduced in the field of earthquake engineering hybrid testing, i.e. the simultaneous combined application of numerical simulation techniques and execution of experiments, is nowadays used in different areas of experimental analysis. The focus of this paper is on the presentation of the so-called substructuring method as a hybrid method in fire engineering. Motivation are EU standards for fire resistance tests of columns or beams. According to these codes building elements are considered as stand-alone elements whereas in real fires each building element interacts with its adjacent elements. Therefore, to conduct a fire test in a more realistic fashion, the concept of hybrid substructuring as a special experimental technique has been adopted to fire engineering. Due to this concept the entire building, which is exposed to a real fire, is decomposed into two parts. One part is represented by the building element under test in a special furnace, whereas the remaining building environment is simulated by a model, based on the equations of thermomechanics. The paper addresses the historical development of the substructuring method in fire engineering supplemented by presentation of the results of realized fire resistance tests in substructuring mode on different types of specimens.