Integration of quality control and base improvement in auger piles

摘要

Restrictions imposed by new health and safety legislation have limited the efficiency and potential capacity of open-hole auger piles cast in situ. This can be overcome through the use of either base-grouting or steel tubes to maximise the capacity generated by any single pile.rnBase-grouting should be used for smaller piles, improving the material at the base and preloading the pile base to improve the compatibility between the displacements necessary to generate the side shear resistance and the end bearing resistance. Steel tubes can be fitted in piles of larger diameter, which can be used to facilitate quality control, improve the conditions at the base of the pile or install dowels to improve the tension or shear resistance in the pile.