FAN Yujiang, GE Jun, AI Binping, et al. Experimental study on seismic behavior of a new fabricated shear wall[J]. 2023, 55(5): 78-87.
DOI:
FAN Yujiang, GE Jun, AI Binping, et al. Experimental study on seismic behavior of a new fabricated shear wall[J]. 2023, 55(5): 78-87.DOI: 10.11918/202112059.
Experimental study on seismic behavior of a new fabricated shear wall
Considering the failure mechanism and weaknesses of traditional fabricated shear wall structures under strong earthquakes
a new type of fabricated shear wall with functions of energy dissipation and shock absorption was proposed. On the basis of model test and numerical simulation
seismic performance tests were carried out on four specimens with scale ratio of 1∶1.54 and shear span ratio of 1.52. Further analysis was conducted to investigate the effects of bolt number
axial compression ratio
and reinforcement ratio of edge members on the seismic performance of the new fabricated shear wall
including failure modes
hysteretic performance
bearing capacity
displacement ductility
stiffness degradation
and energy dissipation capacity. Test results show that the four specimens experienced shear compression failure
which was the same as the cast-in-place shear wall with the same shear span ratio. However
the proposed shear wall had better hysteretic performance and energy dissipation capacity
and the energy dissipation capacity was higher than that of the cast-in-place shear wall at the failure point. When the number of bolts decreased
the hysteretic performance of the new fabricated shear wall decreased
the wall deformation increased
while the bearing capacity remained almost unchanged. When the axial compression ratio or reinforcement ratio of edge members decreased
the bearing capacity decreased
and the ultimate displacement increased. Finally
the finite element model of the specimens was established by ABAQUS program. Comparisons of numerical results and test results showed a good agreement
verifying the correctness of the model
which can be applied to the analysis of the new fabricated shear wall.