Numerical investigation of steel-timber composite beams with cold-formed omega girders. Part 2: Beams with modifications and reinforced beams. - Chybiński, Marcin; Derlatka, Anna; Szewczyk, Piotr; Lacki, Piotr; Abramowicz, Małgorzata; Polus, Łukasz (Archives of Civil Engineering (Polish Academy of Sciences), 2025)