SUPPORT BEAM

A support beam (1) comprises a first support part (2), a second support part (3), and an arm (4) connecting the first support part (2) and the second support part (3). The arm (4) comprises a web (5) and a flange (6A). The flange (6A) comprises a first end part (6Aa), a second end part (6Ab), and a center part (6Ac). The center part (6Ac) of the flange (6A) is connected to the end part (5a) of the web (5). The flange (6A) comprises a bend part (7) in which the center line (6A1) in the thickness of the flange (6A) bends outward in the extension direction of the web (5) in a region between the first end part (6Aa) and the second end part (6Ab) in the lateral cross section of the arm (4). 支撑梁(1)具备第一支承部(2)、第二支承部(3)以及将第一支承部(2)与第二支承部(3)相连的臂(4)。臂(4)具备辐板(5)与凸缘(6A)。凸缘(6A)具备第一端部(6Aa)、第二端部(6Ab)以及中央部(6Ac)。凸缘(6A)的中央部(6Ac)与辐板(5)的端部(5a)相连。凸缘(6A)在臂(4)的横截面上的第一端部(6Aa)与第二端部(6Ab)之间的区域，具备凸缘(6A)的厚度的中心线(6Al)向辐板(5)的延伸方向外侧弯曲的弯曲部(7)。