Vertical Bearing Capacity of Pile Installed by "EXMEGATOP"Method-Base Enlarged Pre-boring and Grouting Method for Pre-cast Pile-(DFI2005)


Most pile foundations in Japan are installed by the bored pre-cast piling method, that is, in holes that have been excavated beforehand and f[iled with cement water slurry, referred to as 'cement milk'. The "bored pre-cast piling method with enlarged base" is frequentiy used. In this method an enlarged excavation is used near the pile toe to increase the vertical bearing capacity. The EX MEGATOP method is a variation of the bored pre-cast piling method. Its features include the use of nodular piles and a long, enlarged excavation. The vertical bearing capacity of the EX MEGATOP method is described in this report.