Improved Fastener-Based Modelling Method for Reinforced Cold-Formed Steel Shear Walls

Table 2

Details of test specimens [18, 23].

Specimen number	Section type of CFS studs		Opening size (b × h/d)/m	Loading regime (∆el/∆f) mm	Sheathing setups^a
	Interior studs	CFRST columns			Base layer		Face layer
					1	2	3	4
RW1	C89	□89 × 100 × 0.9	—	15/55	BMG		GWB
RW2	C140	□140 × 140 × 1.5		15/65	BMG		GWB	ALC^1
RW3	C140	□140 × 140 × 1.5	1.5 m × 2.4 m/0.6 m	15/75	BMG		GWB	ALC^1
MRW1	C89	□89 × 100 × 0.9	—	20/70	BMG		GWB
MRW2	C140	□140 × 140 × 1.5		20/80	BMG		GWB	—
MRW3	C140	□140 × 140 × 1.5	1.5 m × 1.5 m/0.6 m	20/90	BMG		GWB	—

Note: □-89 and □-140 mean 89 mm deep and 140 mm deep end studs, respectively. RRW1∼RW3 and MRW1∼MRW3 are typical single-layer and mid-rise RCFS shear wall specimens, respectively; the width of all specimens is 3.6 m, and the heights of specimens RW1∼RW3 and MRW1∼MRW3 are 3.0 m and 6.36 m, respectively; b and h are the width and height of an opening, respectively; d is the height of the wall segment over an opening; Δ_el and Δ_f are the approximate elastic limit and the failure displacement of each specimen; the single-cycle mode with a displacement step of 5 mm is of the three-cycle mode with a displacement step of 10 mm; the steel of all specimens is of grade 345 MPa;^a sheathing setups (see Figure 1); ¹50 mm autoclaved lightweight concrete slab; the fastener spacing of each specimen was 150 mm.