EXPERIMENTAL AND ANALYTICAL STUDIES ON THE CYCLIC BEHAVIOUR OF COLUMN-BASE JOINTS

摘要

In this paper a research on steel bolted end-plate joints is presented with the primary aim of providing information on the typical behaviour modes. Here, some general conclusions are drawn. It can be stated that the experienced behaviour of each specimen is in accordance with the expected behaviour. Thus, the applied calculation method for the prediction of behaviour mode is justified. The tests justified the existence of the pre-defined types of behaviour. However, the important effect of weld cracks is also highlighted. Whenever there is intensive end-plate deformation the failure is caused by the cracks occurred at the flange to end-plate welds. The cracks also influence the cyclic characteristics causing significant degradation of the moment resistance and the energy absorption capacity. The obtained results are applicable for the verification and calibration of numerical models. Detailed experimental data are provided for various behaviour types corresponding to the same joint topology. It is important, however, to study the concrete behaviour, which can be the topic of further investigations.