Mixed and fine-grain soils frequently have an insufficient bearing capacity and stiffness. Should the fine grain share be around 5% higher, an adequate self-compaction is no longer to be expected. This is where the vibro replacement compacting comes into question as an improvement. This process is also suitable for the improvement of coarse-grain backfills comprising rubble, slag or overburden.
A special area of application are vibro drain columns. Flotation is dispensed with hereby. The column then merely acts as a drain.
The vibro replacement
In most cases, a bottom feed vibrator is used, with which a coarse-grain fill material is discharged at the tip of the vibrator with compressed air support. The vibrocats with a leader that have been designed by Keller provide an additional pull-down pressure to be applied when the vibrator is being lowered and is compacting.
In vibro replacement compacting, the work is carried out in alternate steps. The gravel or crushed stones that are discharged from the vibrator hub are compacted and displaced into the soil at the side. This results in the formation of replacement columns that bear the loads in connection with the soil. The creation parameters are digitally recorded in the device.
ZCQ series variable frequency electric drive Vibroflot technical parameters
|Empty vibration amplitude
|Empty LO current
|The outer diameter of the body
|The total mass
Previous project pictures
China Sinopec Hainan commercial crude oil reserve base project
HZMB Island tunnel project
China Sinopec Caofeidian crude oil commercial reserve base library project
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1, Chinese Embassy in Benin project equipment procurement negotiations
Indonesia Port and foundation construction of offshore Vibro