OVERVIEW
When land is reclaimed from the seabed or the in-situ soil does not fulfill the requirements of bearing capacity, lateral stability and liquefaction potential, ground improvement techniques with Vibrolance offer a qualitative and economical solution.
The PTC Vibrolance tool is adapted for a wide variety of ground conditions and can be carried out to almost any depth. The execution is fast and enables large volumes of soil to be improved, allowing subsequent structural works follow quickly.
Another advantage is the environmental friendliness, the soil is treated with natural materials, such as in-site soil, stones or gravel, rather than with cement, bentonite or steel, used in other deep foundations methods.
1: VIBROCOMPACTION
This technique is used in granular soils. The Vibrolance produces vibrations to rearrange the soil particles of non-cohesive soils into a denser state.
The action of the Vibrolance, usually accompanied by water jetting, reduces the inter-granular forces between the soil particles allowing them to move into a more compact configuration.
2.1: STONE COLUMNS – TOP FEED
The column is built with stones that are added from the ground surface into the hole created by the Vibrolance.
To do this, the Vibrolance must be withdrawn from the ground several times to allow the addition of the stones and re-inserted to assure the compaction.
2.1: STONE COLUMNS – BOTTOM FEED
The column is done with compacted stones that are fed from the bottom of the column (at desired depth), thanks to a stone feeding tube at the tip of the Vibrolance.
