The reinforcement methods include cracks repairing,getting core to reinforce column,hoop rebar exchanging,and so on.

Combined with new codes discuss reinforcement replacement;

Based on considering relative principles in reinforcement replacement, some practical methods for calculating reinforcement replacement of rectangular section flexural members with equal strength,equal deflection and equal crack width are presented,and the key factors in different conditions are analyzed.

It discusses substitution of steel bar in steel bar & concrete parts by calculation,puts forward noteworthy points,and points out that design principles & regulations should be obeyed and normal using functions sho uld be checked further after substitution.

The steps of assuring the quality of hoop close of frame beam nodes;

By means of simulating cross-sectional moment-curvature relations of 10 reinforced concrete columns, the predictions of six hoop-confined concrete models are compared with experimental results, showing that the SR model is more accurate than the others for members under compression and moment.

The results show that there is the influence of the flank and the hoop and the arch to the ultimate bearing capacity of the weakened section of the joint.

Analysis on shearing capacity of concrete beams with corroded stirrups;

Influence of the stirrup on corrosive expanding of the concrete building units;