Abstract: Base on the analysis of the existed compaction device for the municipal solid waste(MSW) transfer station, a new style compaction device——wedge-shaped compaction device is developed. The mechanics model based on Drucker- Prager yield criteria is deducted, and composition effect of the wedge-shaped compaction device is calculated using FEM, and the composition density formula is presented combining with experiment parameter. The calculation satisfied the engineering precision and it can replace experiment. A lots of experiment be done by means of new-develop MSW compaction test equipment, and the relation curve between the waste compacted density and applied pressure is given, a proper applied pressure range (0.1～0.2 Mpa) is also given. The calculation results indicates they are in accord with the experiment data, and the wedge-shaped compaction device can obviously improve the compaction effect of the waste, increase the load capacity of the waste by 48%. The results can offer some reference theory to the design and manufacture of the MSW transfer station.

Key words: Experiment, FEM, MSW, Waste transfer station Compaction device, Wedge-shaped compactor