The strong foundation construction method has been widely applied in highway and railway projects, airport, station, large industrial zones, and reclamation works at ports. It offers benefits such as short construction periods, effective performance, and low costs. The unit compaction energy and the number of compaction strikes have an impact on the effectiveness of the strong foundation method.
The magnitude of compaction energy and its transmission methods. The magnitude of the compaction energy during dynamic compaction significantly affects the effective reinforcement depth. The hammer generates vibration waves, which propagate in all directions. These waves are manifested as oscillating energy; the greater the energy, the greater the distance it can transmit, and the larger the scale of reinforcement during dynamic compaction.
Compaction of soil layers is typically initiated from the surface downwards and also outward towards adjacent areas. Consequently, within a certain range, the soil usually achieves a higher level of compaction with more blows compared to fewer blows.
To enhance the bearing capacity of soft soil foundations during the construction process, the principle involves using a heavy hammer to strike the soil layers from a certain height, facilitating rapid soil consolidation.
Due to the significant variations in the natural landscape of mountainous areas, it is necessary to divide the slopes into several sections during the backfilling process to avoid landslides caused by vertical loading issues. If it involves excavation and backfilling, the rock hardness and particle size are generally uneven. After completion, large stone blocks should be decomposed to control particle size and uniformity. If on-site crushing of large stones is not possible, during the backfilling construction, pay attention to mixing large particles and sandy soil together at the bottom of the foundation, and coordinating the intensity of the compaction blows during the strong compaction construction to significantly increase the bearing capacity of the backfilled foundation.
