Experimental and numerical study on the seismic performance of an L-shaped double-steel plate composite shear wall

In recent years, steel plate-wrapped concrete shear wall has been widely used in high-rise buildings as a new form of the composite member. Five L-shaped double steel plate-concrete composite shear wall (LDSCW) specimens (two specimens with wide flange and three specimens with narrow flange) were tested under cyclic load at loading beam. According to test results, the hysteresis performance, stiffness degradation, bearing capacity degradation, energy dissipation, cyclic ductility, and shear lag behavior were discussed in detail. In addition, finite element models were generated by ABAQUS. Specimens with wide flange exhibited higher bearing capacity and initial stiffness, while specimens with narrow flange had better cyclic ductility and energy dissipation capacity.

Automated summary

The performance of steel plate-wrapped concrete shear walls was studied, including hysteresis behavior, stiffness degradation, bearing capacity degradation, energy dissipation, cyclic ductility, and shear lag behavior. The test results showed that specimens with wide flange exhibited higher bearing capacity and initial stiffness, while specimens with narrow flange had better cyclic ductility and energy dissipation capacity.