45-DEGREE DIRECTIONAL LOADING TEST ON SEISMIC REINFORCEMENT OF THREE DIMENSIONAL CRUCIFORM STEEL STRUCTURE USING STKR COLUMN

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  • NAKANO Tatsuya
    Assistant Prof., Graduate School of Eng., Utsunomiya Univ., Dr. Eng.
  • SAITO Ryota
    Graduate Student, Graduate School of Eng., Utsunomiya Univ.
  • HASEGAWA Takashi
    Senior Researcher, Structural Eng. Dept., Building Research Institute, Dr. Eng.

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Other Title
  • 柱にSTKR材を用いた鋼構造立体十字形架構の補強に関する45度方向載荷実験

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In this paper, the static behavior of three dimensional cruciform structure using STKR column is investigated by the loading test. Parameters are the loading direction and the reinforced parts, an original specimen is not satisfied with the specification of column overdesign factor in the current seismic code. Test results show that the damage of each member of the original specimen is different by the loading direction, the column collapse easily occurs in case of 45 degree directional input. In case that the column is reinforced, the column collapse is prevented regardless on whether the panel is reinforced.

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