# Study on Shear Resistance and Structural Performance of Corrugated Steel-Concrete Composite Deck
## 3 Influence of the Structural Parameters of the Shear Stud on Its Shear Resistance  
Like other members, the shear connection of shear studs has structural parameters, such as the length of the shear stud bar \(h_{s}\) and the diameter of the shear studs \(d_{s}\) As these parameters change, the shear resistance of the shear studs is affected to a certain extent, thus influencing the shear resistance of the overall composite deck structure [28; 29]. Therefore, in this section, the effect of the height of the nail rod of the shear key on the shear capacity of the nails is investigated by studying the height-to-diameter ratio of the nails at \(h_{s}/d_{s}\), based on the experimental finite element modeling of the nails introduced in the previous section [10; 30; 31; 32]. The structural and specific material parameters of the shear studs are shown in Figure 8 and Table 3.  
To investigate the effect of the height-to-diameter ratio of the shear connection key on the shear load capacity and shear stiffness of the shear studs themselves, three of the most commonly used shear studs, \(\Phi 16\), \(\Phi 19\), and \(\Phi 22\), were prepared, and the shear stud heights \(h_{s}\) were divided into four different groups of 160 mm, 180 mm, 200 mm, and 230 mm. The two sets of parameters were matched to each other to form three sets of twelve symmetrical loading groups with different height-to-diameter ratios, each with four shear studs, numbered I and II on each side of the symmetry. There were two shear studs under each number. The shear stud arrangement is shown in Figure 9 below, and the groups are shown in Table 4.  
Figure 8: Schematic diagram of the structural parameters of the shear stud. \begin{table}
\begin{tabular}{c c c c c c} \hline \multirow{2}{*}{**Specification**} & **Diameter \(d_{s}\)** & **Modulus of** & **Poisson’s** & **Yield** & **Tensile** \\  & **(mm)** & **Elasticity** & **Ratio** & **Strength \(f_{y}\)** & **Strength \(f_{st}\)** \\  & **(GPa)** & **Ratio** & **(MPa)** & **(MPa)** \\ \hline \(\Phi 16\) & 16 & 210 & 0.31 & 322 & 384 \\ \(\Phi 19\) & 19 & 210 & 0.31 & 354 & 437 \\ \(\Phi 22\) & 22 & 210 & 0.31 & 371 & 455 \\ \hline \end{tabular}
\end{table} 
Table 3: Specific parameters of the shear studs. Under identical conditions, tangential loading finite element simulations are carried out for each of the above groups until the member is loaded to failure. The data were recorded and collated for analysis, and the finite element simulation results for each group are shown in Figures 10-12. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Group**} & **Group** & \multirow{2}{*}{**PIN**} & **Length** \(h_{s}\) & **Diameter** \(d_{s}\) & **Height-to-Diameter Ratio** \\  & **Number** & & **(mm)** & **(mm)** & **(mm)** \\ \hline \multirow{4}{*}{A} & A-1 & A-1-I & \multirow{4}{*}{230} & \multirow{4}{*}{16} & \multirow{4}{*}{14.4} \\  & A-2 & A-2-I & \multirow{4}{*}{200} & \multirow{4}{*}{16} & \multirow{4}{*}{12.5} \\  & A-3 & A-3-I & \multirow{4}{*}{180} & \multirow{4}{*}{16} & \multirow{4}{*}{11.3} \\  & A-4 & A-4-II & \multirow{4}{*}{160} & \multirow{4}{*}{16} & \multirow{4}{*}{10.0} \\  & B-1-I & \multirow{4}{*}{230} & \multirow{4}{*}{19} & \multirow{4}{*}{12.1} \\  & B-2 & B-2-I & \multirow{4}{*}{200} & \multirow{4}{*}{19} & \multirow{4}{*}{10.5} \\ B & B-3 & B-3-I & \multirow{4}{*}{180} & \multirow{4}{*}{19} & \multirow{4}{*}{9.5} \\  & B-4 & B-4-II & \multirow{4}{*}{160} & \multirow{4}{*}{19} & \multirow{4}{*}{8.4} \\  & C-1 & C-1-I & \multirow{4}{*}{230} & \multirow{4}{*}{22} & \multirow{4}{*}{10.4} \\  & C-2 & C-2-I & \multirow{4}{*}{200} & \multirow{4}{*}{22} & \multirow{4}{*}{9.1} \\ C & C-3 & C-3-I & \multirow{4}{*}{180} & \multirow{4}{*}{22} & \multirow{4}{*}{8.2} \\  & C-4 & C-4-I & \multirow{4}{*}{160} & \multirow{4}{*}{22} & \multirow{4}{*}{7.3} \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Grouping of shear studs for loading. Figure 9: Diagram of the shear stud arrangement (mm).