ABSTRACT
In order to study the law of seismic performance degradation of corroded reinforced concrete columns, 9 reinforced concrete inverted T-shaped columns are designed. Specimens are prepared by artificial tests to accelerate corrosion. The influence of different corrosion rates on seismic performance degradation is studied by low-cycle reciprocating loading. The results show that when the corrosion rate is less than 15%, the bearing capacity is improved, the damage is delayed and the seismic performance is better. For members with a corrosion rate greater than 30%, with the increase of stirrup corrosion, the hysteresis curve gradually changes from a full fusiform shape to an arch shape, and the pinch phenomenon gradually appears. The strength decline level and stiffness decline level increase, energy consumption and ductility decrease, and cumulative energy consumption decreases.
