# Load-Bearing Performance of a Reinforced Fill Structure with Pile Penetration
## 5 Analysis of Results
### Lateral Displacement Analysis
#### 5.1.3 Effects of Different Reinforcement Spacings  
The term \"reinforcement spacing\" in this study refers to the distance between the second layer of reinforcement and the first layer, assuming that two layers of reinforcement are used, with the first layer fixed at the bottom of the structure. Figure 7 depicts the relationship curve between vertical load and lateral displacement for different reinforcement spacings in pile-supported reinforced structures. Table 9 provides the corresponding lateral displacements for various reinforcement spacings in structures under a vertical load of 32.5 kN.  
From the observation in Figure 7a, it can be seen that in the early stage of loading, with the increase in load, the change rule of the incremental magnitude of lateral displacement at the top of the slope of the structure is basically the same, into the middle stage of loading, the incremental amount of lateral displacement at the top of the working condition 6 is  
Figure 6: Side displacement curve of different reinforced layers.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Condition**} & \multirow{2}{*}{\begin{tabular}{c} **The Number of** \\ **Reinforcement Layer n** \\ \end{tabular} } & \multicolumn{2}{c}{\begin{tabular}{c} **Vertical Load Is the Horizontal Displacement Corresponding to 35.0 kN/mm** \\ \end{tabular} } \\ \cline{3-5}  & & \begin{tabular}{c} **Slope Bottom D** \\ **Station** \\ \end{tabular} & \begin{tabular}{c} **In the Slope C** \\ **Station** \\ \end{tabular} & \
\begin{tabular}{c} **In the Slope B** \\ **Station** \\ \end{tabular} &
\begin{tabular}{c} **Top of Slope A** \\ **Station** \\ \end{tabular} \\ \hline
3 & 0 & 7.18 & 12.98 & 16.25 & 2.49 \\
7 & 1 & 21.98 & 45.21 & 48.73 & 0.01 \\
6 & 2 & 3.81 & 8.42 & 9.77 & 4.08 \\
5 & 3 & 2.34 & 6.58 & 7.87 & 5.63 \\ \hline \hline \end{tabular}
\end{table}
Table 8: Lateral displacement of different reinforced layer piles (Vertical load: 35.0 kN).  
significantly increased, and the trend of the top lateral displacement tends to be stabilized after the loading is continued.  
According to the results shown in Figure 6(b), it can be seen that, when the vertical load is less than or equal to 32.5 kN, with the increase in the load, the change rule of the increase in the amount of lateral displacement of the B measurement point in the structure is similar under different working conditions.  
From Figure 6(c),d, it is evident that during the initial stages of loading, as the load increases, the lateral displacement increments at the C measurement point in the slope and the D measurement point at the bottom of the slope of this structure change in a nearly identical trend. A comprehensive analysis of Figure 7 and Table 9 shows that when the spacing between the 2 nd layer of reinforcement and the 1 st layer of reinforcement is 20 cm, the soil body is constrained by the larger reinforcement, and both the reinforcement and the soil body on the pro-slope face are damaged, but the misalignment is not obvious. This shows that a suitable spacing of reinforcement exists so that the lateral limiting effect of reinforcement on the soil can be maximized [13].