Seismic Performance of CFST Frame-Steel Plate Shear Walls Connected to Beams Only

Table 4

Structural performance factors.

Model number	Structural basis period	Structural ductility reduction factor Rμ	Structural overstrength factor Rs	Structural response modification factor R	Displacement amplification factor Cd
	T/s
M-10-3	1.06	1.254	2.660	3.326	3.194
M-10-5	1.25	1.352	2.402	3.248	3.117
M-15-3	1.57	1.106	2.881	3.187	3.129
M-15-5	1.79	1.192	2.669	3.180	3.056
M-20-3	1.99	1.046	2.938	3.073	2.988
M-20-5	2.19	1.084	2.794	3.029	2.826
Average		1.172	2.724	3.174	3.052
Standard deviation		0.106	0.176	0.098	0.119
Variation coefficient		0.090	0.065	0.031	0.039