| 摘要 |
<p>A method and means for manufacturing a steel beam, the steel beam serving together with concrete as a bearing composite structure for various slab sys-tems. In the method the base plate (1), web parts (2) and top plate (3) of the beam are cut from a plate material, the parts are assembled in such a manner that between them, a space is formed for concrete, and the parts are welded together. Web plates (3) are cut to a curved shape according to precambering. Side supports (4) determining the position of the web plates and centre supports (5) determining the location of the top plate (3) are fastened to the base plate (1) at regular intervals in the longitudinal direction of the beam. A force (F) is directed to the base plate (1) that forces the base plate (1) to the curvature defined by the web plates (2).</p> |
