# Experimental Study of High-Strength Concrete-Steel Plate Composite Shear Walls
## 2 Experimental Investigation
### Specim Properties
Longitudinal reinforcement was placed in  
boundary elements, and steel ratios of 16.9% and 1.35% were used for shear and flexure specimens, respectively. Table 1 lists the steel reinforcement ratios in wall web. Table 2 lists key material properties of test specimens. The 28-day cubic compressive strength, \(f^{\prime}_{\text{ck,cube}}\), for shear specimens and flexure specimens are 72.3 MPa and 84.1 MPa, respectively. Two types of steel reinforcements (HPB235 and HRB 335) were used in the wall specimens. Table 2 summarizes the measured yield strength\(f_{\text{yk}}\) and ultimate strength\(f_{\text{tk}}\) of steel reinforcements and steel plates. \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline \multirow{2}{*}{\begin{tabular}{c} **Batch** \\ **Number** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Specimen** \\ **Number** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Aspect** \\ **Ratio** \\ \end{tabular} } & \multicolumn{3}{c}{**Steel Reinforcement Ratio**} & \multirow{2}{*}{\
\begin{tabular}{c} **Vertical** \\ **Longitudinal** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **Axial** \\ **Longitudinal** \\ \end{tabular} } \\ \cline{3-3} \cline{5-8}  & & & & & & & & **Load (kN)** \\ \hline \multirow{4}{*}{\(1\)} & RCSW 1-1 & & & & & & & 900 & 0.45 \\ \cline{2-8}  & RCSW 1-2 & & & & & & 1000 & 0.50 \\ \cline{2-8}  & RCSPSW 1-1 & & & & & & 1000 & 0.33 \\ \cline{2-8}  & RCSPSW 1-2 & & & & & 1380 & 0.45 \\ \cline{2-8}  & RCSPSW 1-3 & & & & & 1500 & 0.50 \\ \hline \multirow{4}{*}{\(2\)} & RCSW 2-1 & & & & & & 2180 & 0.50 \\ \cline{2-8}  & RCSW 2-2 & & & & & & 2610 & 0.60 \\ \cline{2-8}  & RCSW 2-3 & & & & & & 3050 & 0.70 \\ \cline{2-8}  & RCSPSW 2-1 & & & & & 2180 & 0.42 \\ \cline{2-8}  & RCSPSW 2-2 & & & & & 2610 & 0.50 \\ \cline{2-8}  & RCSPSW 2-3 & & & & & 3050 & 0.58 \\ \hline \hline \end{tabular}  
* RCSW #-# represents conventional reinforced concrete shear walls and RCSPSW #-# represents new reinforced concrete–steel plate composite shear walls.  
\end{table} 
Table 1: Test Specim Configurations. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{3}{*}{\begin{tabular}{c} **Material** \\ **Specimen** \\ **Number** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Compressive** \\ **Strength** \\ \(f_{\text{dk,cube}}\) \\ **(MPa)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Tensile** \\ **Strength** \\ \(f_{\text{ctk}}\) \\ **(MPa)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Yield Strength** \\ **(MPa)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Ultimate Strength** \\ **(MPa)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Yield** \\ **(MPa)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Ultimate Strength** \\ **(MPa)** \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} **Yield** \\ **(MPa)** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **Ultimate** \\ **Strength** \\ \(f_{\text{yk}}\) **(MPa)** \\ \end{tabular} } \\ \cline{3-3} \cline{5-8}  & & & & & **HPB235** & **HRB335** & & **HPB335** \\ \hline RCSW 1-X & & & & & & & \\ \cline{2-8} RCSPSW 1-X & & & & & & & 367 & 477 \\ \hline RCSW 2-X & & & & & & & 322 & 435 \\ \hline \hline \end{tabular}  
* RCSW #-# represents conventional reinforced concrete shear walls and RCSPSW #-# represents new reinforced concrete–steel plate composite shear walls.  
\end{table} 
Table 2: Material Properties.