The remaining load-bearing capacity of corroded steel angle compression members

•Ultimate behaviour and remaining capacity of corroded angle elements are analysed.•Experimental, numerical and analytical analyses are completed.•New design method is proposed for the analysis of the corroded angle members.

The paper presents a study on the buckling of corroded equal-leg angle-section members. The remaining load-bearing capacity and the prospective behaviour modes are analysed by experimental and numerical research. The diversity of the corrosion is taken into consideration in the analysis; the corrosion is modelled by thickness reduction. Compressive buckling tests, finite element and analytical studies are completed to analyse the modified buckling behaviour and the ultimate load. On the basis of the results simplified design method is developed for the prediction of remaining compressive resistance.