Displacement Piling

Displacement Piling

Displacement piling techniques utilise a purpose-built auger head to laterally displace the soil during installation rather than excavation which occurs during CFA or bored pile construction. This technique therefore improves the strength of the soil during installation by compacting the surrounding material thus increasing pile capacity and stiffness. Displacement piling produces very little spoil during construction and is therefore ideally suited for sites with contaminated soils.
As with CFA piling, concrete is injected under pressure during extraction of the displacement auger via a hollow drill stem. Should reinforcement be required, this is installed into the super workable concrete after completion of the pile.

Whether for piling or ground improvement, all aspects of pile construction are monitored and recorded by our on-board computer systems which allow the operator to accurately control all aspects of the pile construction process and also allow our engineers to monitor pile records which are  automatically downloaded to our offices immediately after pile completion.

TREATMENT FOR SOFT SOILS

To overcome excessive settlements associated with soft soils, Continuous Modulus Columns have been developed as a means of reducing consolidation settlements to an acceptable level and/or to eliminate the need for lengthy surcharging periods. Displacement Piles have been successfully implemented as a means of transferring the surcharge loadings from road embankments and other overlying structures to stiffer material at depth on many of Australia's largest infrastructure projects (such as Brisbane's Gateway Bridge Duplication, Brisbane Airport Link, Kempsey Bypass) and also have application for heavily loaded areas such as warehouses and for large tank foundations such as those commonly used in LNG facilities.