山形鋼各種接合部及びスプリットティ接合部の高速引張載荷時の挙動について

Abstract

Stress (or strain) rate effect in several steel structural joints is examined to assess thestructural safety of the joints against earthquakes or gusts. High speed tensile loading testwas carried out with several range of loading speed, by using high tension bolted joints ofequal leg angles and split tee joints as well as galvanized normal steel bolted joints.From the experiment, mechanical properties of the joints under high speed loadings wascalculated and was compared with the properties of the base metals under statically loadingcondition. From the comparison, it has been observed that the high tension bolted jointsdesigned by applying with friction mechanism are inferior in strength ratio to the angleswhich are applied to the structural members under high speed loading conditions, and itcan be followed that careful attention should be paid to safety of the structure, composed ofthe joints against excitations with comparatively large velocities.