Abstract
Bearing behaviour of steel pipe piles and helical piles has been investigated in the past. However, their performance, considering similar pile tip diameter in dense ground condition is not well understood. Based on the above, the present study was focused on the model study of closed-ended steel pipe piles and single helix piles having similar tip diameters under dense ground conditions. Test results showed that steel pipe piles require 332% and 417% higher installation force than helical piles having equivalent tip diameters DPS = DH = 43mm and 60mm respectively. However, the installation effort of screw pile in terms of power consumption was on average 29% higher than steel pipe pile. Also, helical piles exhibit 27% less ultimate bearing capacity than steel pipe piles having equivalent tip diameters. It was also observed that the installation force required to install the steel pipe pile is quite close to the ultimate bearing capacity of pile.
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