Pile driving in soft clay: Australian case studies on lateral ground displacement

Driving piles and pile groups into soft, saturated clay is widely recognised as a cause of significant ground movements. These movements can have serious consequences for brownfield sites, where existing infrastructure such as underground utilities or pre-existing piles may be in close proximity. Accurately predicting these ground movements is essential to optimise the design of proposed piles or pile groups and to implement appropriate controls that mitigate risks to existing assets. This paper builds on the authors’ previous research, which has explored the use of finite-element analysis and the shallow strain path method to predict lateral ground movements resulting from pile driving in soft clay soils. These methods are applied to several case studies supported by field monitoring trials involving the installation of precast concrete driven piles and steel H-piles in soft clay conditions. The findings demonstrate that these established analytical and numerical methods provide a reliable basis for assessing and managing potential impacts on existing assets.