Abstract
Of the beam-column frames which are used in vibration-controlled structures, we conducted repeated static and dynamic tests on the model of flange plates at welded beam-end, using steel type and ambient temperature as parameters. As a result, the following conclusions were obtained. 1) While the transverse stress distribution is convex in the elastic zone, it is reversed into concave in the plastic zone. 2) The higher the strength of steel, the smaller the cumulative plastic deformation magnification. However, all test specimens are fully capable of accommodating the damage which they sustain during the period of using a building. 3) The rise of yield strength due to ambient temperature and test speed is more pronounced in low-strength steels. 4) From the viewpoint of the right steel for the right place, SM490A and SN400A are the most suitable for vibration-controlled structural frames with damners as they fully meet requisite performances.
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