The Bearing Capacity of Compressed Corrosion-Damaged Reinforced Concrete Elements under Lateral Pulse Loading

This article addresses the relevant problem of stress–strain behavior compressed reinforced concrete columns under lateral pulse loading. A simplified engineering method analyzing limit value loading P, depending on longitudinal force N acting column, is developed. The proposed involves construction P-N curve that has three portions. Portion 1 describes plastic deformation and rebars part structure mostly in bending. 2 state column can trigger brittle failure along normal section, 3 high compression predominantly triggers its shear failure. For Portions 2, analytical relationships are obtained using equilibrium equations. Corrosive damage taken into account model as a reduction strength deformability characteristics material. conventional local corrosion spot be considered; it located both outside area action results were compared with numerical studies full-scale experiment. As result testing developed technique, was found provides safety margin for corrosion-damaged elements 0.20–0.8 ultimate horizontal impulse at operational values compressive force. considered paper leads to 10–60% columns, their location.