Presented by Martin Larisch & Tim Pervan
The presentation introduces some of the most common ground improvement techniques. It will set a particular focus on the design philosophy and construction challenges of executing ground improvement to mitigate seismic liquefaction.
It includes a case study and discussion on the risk–based approach adopted for the use of dynamic compaction of dune sands and describes other improvement techniques that met design criteria modelled to mitigate the effects of seismic liquefaction.
In terms of dynamic compaction, the talk compares field trials of various drop energies with corresponding ground vibration data and discusses how this was used to develop a programme of treatment to meet the ground improvement criteria while limiting environmental effects.