proVed

Pulse compaction is a method of medium-depth soil compaction in which energy is generated by dropping a falling weight onto a compaction foot. Currently, during construction, the progress of compaction and the target compaction level in impulse compaction cannot be determined by a parameter indicating bearing capacity. The project’s objective is therefore to develop an innovative method for process-integrated, dynamic compaction control in IMPV. In future, the method is intended to enable the measurement of bearing capacity, comprehensive online monitoring of progress, and resource-optimised control of time and energy.

The proposed solution is based on a kinetic analysis of the compaction foot with each blow. To record the target parameters, measuring instruments from dynamic pile testing are to be used, with their measured values converted into the bearing capacity parameter by an automated evaluation algorithm. The specification of suitable measurement technology, its integration at the compaction foot, and the development of the evaluation algorithm are to be addressed through research. The consortium comprises experts in the fields of specialised civil engineering (TERRA-MIX), measurement technology (GSP), automation (GRÜBL) and geotechnics (FTZ).

The expected outcome is a method for compaction control using a bearing capacity parameter in IMPV, as well as a valuable scientific contribution to the soil mechanics understanding of the processes involved in dynamic soil compaction. The new online compaction monitoring system will significantly enhance the competitiveness of IMPV compared to rival ground improvement methods. In addition to enormous economic potential from in-house utilisation and sales, the project thus also makes an important contribution to greater sustainability in civil engineering and to digital project management and documentation in civil engineering.

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