Buckling collapse tests of deteriorated steel plates with multiple circular openings

To ensure the structural capacity of plates with multiple openings subjected compressive loads and to find a better design solution, the strength of different structural configurations is analysed here. A series of experimental buckling collapse tests have been carried out for steel plates with multiple openings, of three different degrees of openings. Each degree of opening is represented by two groups of openings, to investigate the effect of possible design solutions aiming for the maximum compressive strength. The effect of corrosion wastage is also studied, where the specimens are naturally corroded. The effect of manufacturing defects as the initial imperfection on both compressive capacity and the final deformed shapes is also studied. Several relationships as functions of the degree of openings and remaining volume of the corroded plates with multiple openings are developed, and recommendations regarding the early design stage are provided.