Abstract:This paper presents the results of the study on thin walled steel portal frames, which are used in Japan as basic structural frames for motorway viaducts. A serious problem found in many such frames is fatigue cracks developed at the beam to column connection. To act as a measure against the fatigue failure, in some cases a hole is provided at the beam -column connection of the frames. In this study, dynamic analysis using real earthquake data from 3 different earthquakes have been carried out to examine the i… Show more
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