Seismic Evaluation and Retrofit of Reinforced Concrete Buildings with Masonry Infills Based on Material Strain Limit Approach

Table 5

Comparison of different parameters for the full RC-infilled frame.

Parameters	Before retrofit		After retrofit		Remarks
	Full RC-infilled frame	Full RC-infilled frame	Full RC-infilled frame	Full RC-infilled frame
	In X-axis	In Y-axis	In X-axis	In Y-axis
Ultimate capacity	7056.10 kN	7063.99 kN	7887.47 kN	8072.72 kN	After retrofitting, 11.78% increases in X-axis and 14.27% increases in the Y-axis
Yield displacement	60.48 mm	60.42 mm	66.33 mm	68.5 mm	After retrofitting, 9.67% increases in the X-axis and 13.37% increases in the Y-axis
Maximum displacement	70 mm	70 mm	100 mm	100 mm	After retrofitting, 42.85% increases in X-axis and Y-axis
Ductility	1.16	1.16	1.51	1.46	After retrofitting, 30.17% increases in X-axis and 25.86% increases in the Y-axis
Ductility reduction factor	1.15	1.15	1.42	1.38	After retrofitting, 23.47% increases in X-axis and 20.00% increases in Y-axis
Overstrength factor	10.19	10.20	11.39	11.66	After retrofitting, 11.77% increases in X-axis and 14.31% increases in the Y-axis
Time period	0.32 s	0.32 s	0.31 s	0.31 s	After retrofitting, 3.125% decreases in X-axis and Y-axis
R-factor	5.85	5.86	8.08	8.04	After retrofitting, 38.11% increases in X-axis and 37.20% increases in the Y-axis