Gleitfeste Verbindungen mit Imperfektionen

Slip-resistant connections with imperfections. Slip-resistant connections are traditionally used in steel and plant structures whenever slip and deformation in the bolted connections must be minimized. The current test procedure according to EN 1090-2, Annex G is limited to the basic load-bearing behaviour under laboratory conditions. For the industry, important questions are to which extent production-, assembly- and operation-related influences have to be considered in the design of slip-resistant connections, as they affect the economic efficiency of this type of connection. In the frame of the IGF research project 19749 BG “Influence of manufacturing- and assembly-related imperfections on the bearing behaviour of bolted slip-resistant connections in steel structures” carried out by the Institute for Metal and Lightweight Structures (IML) of the University of Duisburg-Essen in cooperation with Fraunhofer Institute for Large Structures in Production Engineering (IGP), Rostock and Institute for Corrosion Protection Dresden GmbH (IKS), systematic investigations into slip-resistant connections of categories B/C according to EN 1993-1-8 were carried out. Herein, reference tests were conducted without imperfections and then compared with connections with artificial imperfections. Based on the test results, the influence of different imperfections on the load-bearing behaviour of slip-resistant connections in steel construction could be determined.