ROLLED H-SECTION STEEL
Provided is a rolled H-section steel having a web and flanges. The rolled H-section steel satisfies the following Expression (1) when H is the height of the rolled H-section steel, and B is the breadth of the flanges. The tensile strength is 400 to 510 N/mm 2 . The rolled H-section steel satisfies the following Expressions (2) and (3), when the plate thickness of the flanges is t 2 , and the design yield stress of a steel material of the rolled H-section steel is F(N/mm 2 ). ( B/H )≦0.77 (1) 11.1< B /(2× t 2 )≦215/√{square root over ( )}( F ) (2) 235≦ F ≦275 (3)
1 . A rolled H-section steel having a web and flanges, wherein:
the rolled H-section steel satisfies a following Expression (1) when H is a height of the rolled H-section steel, and B is a breadth of the flanges;
a tensile strength thereof is 400 to 510 N/mm 2 ; and
the rolled H-section steel satisfies following Expressions (2) and (3), when a plate thickness of the flanges is t 2 and a design yield stress of a steel material of the rolled H-section steel is F (N/mm 2 ).
( B/H )≦0.77 (1)
11.1 <B /(2 ×t 2 )≦215/√{square root over ( )}( F ) (2)
235≦F≦275 (3)
2 . The rolled H-section steel according to claim 1 ,
wherein the rolled H-section steel satisfies a following Expression (4) when a plate thickness of the web is t 1 .
63.5<(( H− 2 ×t 2 )/ t 1 )≦1100/√{square root over ( )}( F ) (4)
3 . The rolled H-section steel according to claim 1 ,
wherein a plate thickness t 1 of the web and the plate thickness t 2 of the flanges satisfy a following Expression (5).
0.75<( t 1 /t 2 )<1.0 (5)