孔空きフランジ方式を用いた現場溶接型柱梁溶接接合部の変形能力に関する実験的研究

概要

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In the 1995 Hyougoken-Nanbu earthquake, brittle fractures of beam-to-column joints were widely observed. One cause is stress concentration of the scallop part. In recent paper published, it has been reported that non-scallop method improves on deformation capacities more than conventional scallop method. However, it is difficult that welded beam-to-column joints on site make use of non-scallop method. The drilled flange method plays a role similar to that of connection schemes such as dogbone and haunches. Drilled flange method move the plastic hinge away from the face of the column. Deformation capacity of beam-to-column connections welded on site are chosen as the subject of this study. This paper presents the results of full-scale tests of welded drilled flange beams-to-column joints on site. Based on the test results, effective drilled flanges are proposed to decrease stress concentration of the scallop part and increase deformation capacity.
2004-11-30