Seismic Performance Evaluation of Modern Bare and Masonry-Infilled RC SMRF Structures

Table 4

Base shear force demands for models calculated from the 5% damped elastic acceleration spectrum generated for input acceleration.

Model	Test run	Frequency (Hz)	Sa (g)	Γ1	Weffective (%)	Vb1 (kN)	Diff. (%)
Bare frame	BF_NR1	3.08	0.91	1.23	90.19	249	−19.68
	BF_NR2	2.73	1.94	1.22	89.69	528	20.27
Hybrid masonry infill	HM_NR1	3.37	0.71	1.28	90.69	246	−24.54
	HM_NR2	3.32	1.36	1.31	89.22	464	−29.48
Masonry infill	CM_NR1	3.32	0.85	1.25	89.72	291	−13.13
	CM_NR2	3.13	1.23	1.25	88.85	418	−31.81

The values were converted to the corresponding prototype structures using the applicable scaling factors.