# Study on Reinforcement Mechanism and Reinforcement Effect of Saturated Soil with a Weak Layer by DC
## 1 Introduction
### Dynamic Compaction
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Reference** & **Ground Stratum** & **Research Questions** & **Main Conclusion** & **Investigation Method** \\ \hline \multirow{8}{*}{[PERSON], \& [PERSON] [14]} & \multirow{8}{*}{Uniform} & A two-dimensional finite element method based on the cap model is used to study the influence of different construction parameters and soil properties on the reinforcement effect by DC. & This paper proposes a chart method for predicting the reinforcement effect of sandy soil foundation. & Numerical method \\ \hline \multirow{8}{*}{[PERSON] et al. [15]} & \multirow{8}{*}{Uniform} & \multirow{8}{*}{Ls-dyna was used to investigate influence of different parameters of DC and soil properties’ conditions.} & This paper presents a estimation method for ground deformation of granular soils caused by DC. & Numerical method \\ \hline \multirow{8}{*}{[PERSON] et al. [16]} & \multirow{8}{*}{Uniform} & \multirow{8}{*}{Ls-dyna was used to investigate influence of different parameters of DC and soil properties’ conditions.} & This paper presents a estimation method for ground deformation of granular soils caused by DC. & Numerical method \\ \hline \multirow{8}{*}{[PERSON] et al. [16]} & \multirow{8}{*}{Uniform} & \multirow{8}{*}{Ls-dyna was used to investigate influence of investigate influence of different parameters of DC on the soil improvement between adjacent tamping locations.} & This paper proposes a method for estimating the degree of final soil improvement between adjacent tamping locations. & Numerical method \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \hline \multirow{8}{*}{[PERSON] et al. [17]} & \multirow{8}{*}{Uniform} & \multirow{8}{*}{Ls-dyna was used to investigate influence of soil properties, different parameters of DC and soil improvement between adjacent tamping locations.} & This paper focuses on the two key elements, which influenced improvement of saturated foundation: groundwater, and sitecondition. & Numerical method \\ \hline \multirow{8}{*}{[PERSON] et al. [18]} & \multirow{8}{*}{Uniform} & \multirow{8}{*}{Ls-dyna was used to investigate influence of soil properties on saturated foundation by DC.} & Dynamic consolidation was proved to be an effective form of soft foundation treatment for plastic clayy fill in a port area. & Numerical method \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \hline \multirow{8}{*}{[PERSON], \& [PERSON] [19]} & \multirow{8}{*}{Ls-dyna was used to investigate influence of a clay in the infill port area.} & Dynamic consolidation was proved to be an effective form of soft foundation treatment for plastic clayy fill in a port area. & \multirow{8}{*}{Field test} \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \hline \multirow{8}{*}{[PERSON] et al. [20]} & \multirow{8}{*}{soft soils} & \multirow{8}{*}{The dynamic consolidation (heavy tamping) is performed in a site with loosely deposited soft soils in the Yangtze River Delta of China.} & The allowable bearing capacity and the depth of improvement after DC meet the design requirements. & Field test \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \hline \multirow{8}{*}{[PERSON] et al. [21]} & \multirow{8}{*}{Uniform} & \multirow{8}{*}{A novel method of modeling preloading consolidation and DC in centrifuge are developed in this study.} & The results of test are comprehensively analyzed and discussed to have a better understanding of preloading consolidation and DC. & \multirow{8}{*}{Centrifuge test} \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \cline{1-1}  & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Summary of previous research on DC through field tests, numerical simulation, and experimental models [14; 15; 16; 17; 18; 19; 20; 21; 22; 23].