Abstract
The precast reinforced concrete (RC) shear wall structure with lead viscoelastic damper is a combination of shear wall with horizontal connectors and vertical energy-dissipating connectors. The lead viscoelastic damper (LVED) is adopted as the vertical wall-wall joint to increase the plastic deformability of shear wall and provide additional strength and energy dissipation. The pore-forming grouted lap-sliced connector is adopted as the horizontal wall-floor joint to ensure the overall seismic performance of the shear wall. Firstly, cyclic loading tests were conducted to investigate the influence of lead and viscoelastic layer thickness on the hysteretic behaviour of LVED, and the theoretical method and finite element analysis model for LVED were also proposed and validated by the test results. Additionally, the seismic behaviour of precast shear walls with and without LVEDs was studied experimentally and numerically. It was shown that better cooperative working performance was observed in the precast shear wall with LVED. Finally, the dynamic responses of precast frame-shear wall structure adopting LVED was investigated based on dynamic time-history analysis.
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