Behavior of Double Skin Composite Shear Wall with Different Faceplate Configuration towards Cyclic Loading

Double skin composite (DSC) shear wall is composed of two exterior steel faceplate connected to each other by connectors and infilled with concrete. In terms of axial and lateral strengths, stiffness, ductility, and energy dissipation capacity, DSC wall performs better than standard Reinforced Concrete (RC). There are two patterns DSC faceplate of DSC, namely flat and corrugated which offers significantly higher out-of-plane bending stiffness. Therefore, this study aimed to explore the effect of faceplate configuration on cyclic behavior of DSC shear wall. Comparison was made regarding the patterns of faceplate including trapezoidal, zig-zag, and curved profiles with flat. This was followed by finite element analysis with ANSYS software to investigate the response of DSC towards cyclic loading. The results showed that among the four profiles, trapezoidal profiles had better energy dissipation and ductility ratio. Trapezoidal pattern offered several advantages in the manufacturing field, including better contact between concrete and good aesthetic appearance. Energy dissipation of DSC wall with trapezoidal faceplate was found to be 37.57%, 23%, and 42.66% more than zigzag, curve, and flat, respectively. There was a reduction in stress by providing corrugated profiles, where the maximum of 54.3% was induced in DSC wall with flat faceplate compared to trapezoidal. This showed that optimizing faceplate configuration further increased the benefits of DSC wall, offering a robust option for seismic design.