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

Table 6

Comparison of different parameters for the open ground storey RC-infilled frame.

Parameters	Before retrofit		After retrofit		Remarks
	Open ground storey RC-infilled frame	Open ground storey RC-infilled frame	Open ground storey RC-infilled frame	Open ground storey RC-infilled frame
	In X-axis	In Y-axis	In X-axis	In Y-axis
Ultimate capacity	1505.98 kN	1498.58 kN	6241.19 kN	6250.54 kN	After retrofitting, 314.42% increases in X-axis and 317.09% increases in the Y-axis
Yield displacement	22.14 mm	21.93 mm	54.62 mm	54.72 mm	After retrofitting, 146.70% increases in the X-axis and 149.52% increases in the Y-axis
Maximum displacement	42 mm	42 mm	93.33 mm	86.67 mm	After retrofitting, 122.21% increases in X-axis and 106.35% increases in the Y-axis
Ductility	1.89	1.91	1.70	1.58	After retrofitting, 10.05% decreases in X-axis and 17.27% decreases in the Y-axis
Ductility reduction factor	1.67	1.68	1.55	1.47	After retrofitting, 7.18% decreases in X-axis and 12.5% decreases in Y-axis
Overstrength factor	2.17	2.16	9.01	9.02	After retrofitting, 315.20% increases in X-axis and 317.59% increases in the Y-axis
Time period	0.48 s	0.48 s	0.32 s	0.32 s	After retrofitting, 33.33% decreases in X-axis and Y-axis
R-factor	1.81	1.81	6.98	6.62	After retrofitting, 285.63% increases in X-axis and 265.74% increases in the Y-axis