SHEAR STRENGTH ENHANCEMENT TYPE REINFORCING METHOD FOR EXISTING REINFORCED CONCRETE COLUMN

摘要

PROBLEM TO BE SOLVED: To enhance the earthquake resistance of an existing reinforced concrete column as a whole with high efficiency by enhancing flexural rigidity at the center of the column, and enhancing shear strength at the ends of the column, i.e., near upper- and lower-story slabs. ;SOLUTION: An existing reinforced concrete column 9 firmly held between upper- and lower-story slabs 10, 11 is surrounded at its center by a new reinforced concrete body 1 for reinforcement, and is surrounded and reinforced, at its upper and lower ends located near the upper- and lower-slabs 11, 12, by band steel plates 2 for reinforcement. The column can thus be prevented from decreasing in length and allowed to have enhanced shear strength. Also, fire resistance and overall rigidity can be enhanced by surrounding with ordinary concrete 8 the outer peripheries of the band steel plates for reinforcement.;COPYRIGHT: (C)1997,JPO