<p>The consolidation settlement of soft soil poses critical threats to the stability and operational safety of port facilities, necessitating a systematic evaluation of consolidation characteristics before and after dynamic compaction. This study performed one-dimensional consolidation creep tests on soft soil samples from dynamic compaction and original zones in a port, analyzing consolidation parameters under varying loading conditions. The results reveal a nonlinear settlement-time relationship, indicating that an optimal moisture content range of 24.9–28.8% minimizes settlement discrepancies across different stress levels. Compared with the original soil, dynamic compaction reduces the final settlement under the maximum test stress by 40.6%. The porosity ratio at the final stable state under different stress levels decreases by 12.7–35.4%, and the reduction rate of the variation amplitude of porosity ratio under the maximum test stress level reaches a maximum of 50%; the secondary consolidation coefficient is reduced by 86.6%. Notably, the consolidation coefficient of compacted soil decreases with increasing stress, which contrasts with the trend observed in natural soil. These findings provide a direct basis for optimizing soft soil foundation treatment in port engineering and offer a new approach for evaluating the effects of dynamic compaction.</p>