<p>A connector beam for forming a combined structure consisting of a steel beam and concrete structure comprises a lower flange (1), at least two web plates (2) fastened on the lower flange (1) at a distance from the long sides of the lower flange (1) and at a distance from each other and an upper flange (3) fastened at a distance from the lower flange (1) and a distance from the opposite sides of the web plates (2) in relation to the lower flange (2). Brackets (4) formed as extensions of the web plates (2) extending from the upper flange (3). According to the invention at least one cut (5) open in the direction of the bracket (4) is formed on each bracket (4) so as to align with each other, into which cut a reinforcing (7) can be arranged.</p>
