| 摘要 |
PROBLEM TO BE SOLVED: To obtain an assembling H-shaped steel capable of optionally adjusting a bending stress allowable degree and reducing material expenses and masses. SOLUTION: A pair of C-type channel steels 10a and 10b are arranged back to back with each other, and a web 12 makes caulking connections J<SB>w1</SB>and J<SB>w2</SB>. Then, reinforcing flanges 13 are respectively fixed to upper side flanges 11<SB>a1</SB>, 11<SB>b1</SB>and lower side flanges 11<SB>a2</SB>, 11<SB>b2</SB>with caulking connections J<SB>u1</SB>, J<SB>u2</SB>and J<SB>d1</SB>, J<SB>d2</SB>. Each reinforcing flange 13 can be fixed to either the overall length or a part in the longitudinal direction of the H-shaped steel. Since the necessary bending stress allowable degree can be obtained by the thickness of the reinforcing flange 13, it is not necessary to form the whole H-shaped steel into the thickness. COPYRIGHT: (C)2007,JPO&INPIT
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