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溶接角鋼管柱の座屈耐力に関する検討-溶接および冷間成形の影響-

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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.5 (1973) No.3

溶接角鋼管柱の座屈耐力に関する検討-溶接および冷間成形の影響-

Studies on Buckling Strength of Welded Box Column -Effect of Welding and Cold Forming-

山口 修一(Shuichi Yamaguchi) 滝沢 章三(Shozo Takizawa) 川島 義克(Yoshikatsu Kawashima) 西村 誠(Makoto Nishimura)

要旨 : 角鋼管柱の座屈耐力に,溶接や冷間成形がおよぼす影響を検討するために,製造方法の異 なる3タイプの角鋼管について,素材試験,残留応力測定および短柱圧縮試験を行ない, Huber,Beedle らの理論に従ってそれぞれの座屈算定式を誘導した。その結果,下記の事 項が明らかになった。1)冷間成形を施したコーナー部の機械的性質は,予ひずみの影響によ って著しく変化するが,座屈耐力には有利な条件となる。2)溶接箇所が多いタイプほど座屈 耐力がやや低下する。 Synopsis :

For the purpose of studying how the buckling strength of welded box-columns is affected by the welding and cold-forming during the making of these boxes, three types of box-columns, each different in the manufacturing method, were subjected to the coupon tests, residual stress measurements and stub column tests, and the buckling formulas based on the theory of Huber and Beedle and others were calculated. As a result, the following two points were found: (1) The pre-strain given to the box-column corner during cold-forming increases the buckling strength. (2) The more there are weld points in the column, the lower the buckling strength.

(c)JFE Steel Corporation, 2003

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