In the low-cycle reciprocating loading test of cold-formed thin-walled steel composite wall connected with rivet locking or self-tapping screw

the phenomenon of “pinching” of hysteresis curve is serious and the energy dissipation capacity is poor. To reduce the damage of cold-formed thin-wall steel composite wall under earthquake and improve the energy dissipation capacity of the structure

a cold-formed thin-wall steel composite wall structure system with lead damper was proposed

and seismic performance experimental study was conducted based on three variables

i.e.

cold-formed thin-walled steel composite wall corner connection mode

panel rivet spacing

and type. Results show that with the addition of the lead damper

the deformation capacity and energy dissipation capacity of the cold-formed thin-walled steel composite wall structure system based on rivet locking or self-tapping screw connection were significantly improved under the low-cycle reciprocating loading. The stiffness degradation tended to be gentle

the injury index was significantly decreased

and the failure pattern was optimized

while the yield load and peak load were slightly reduced. Then

with the rivet spacing reduced

the yield load

peak load

peak displacement

and shear strength of the composite wall were improved to some extent

but the energy dissipation coefficient had little difference. Meanwhile

the yield displacement

yield load

peak displacement

and peak load of the cold-formed thin-walled steel composite wall based on rivet connection were significantly higher than those of the cold-formed thin-walled steel composite wall based on self-tapping screw connection

but the ductility and energy dissipation coefficient of the walls were similar.