摘要
Advantage of I-shaped supporting pile is shown with an example.Tube-sinking test of hollow I-shaped casing and pile-formed technology for I-shaped case-in-place pile are also introduced.Aiming at the disadvantages of its smaller stiffness and weak resistance to deformation during tube-sinking,the deformation control countermeasures for I-shaped casing is illustrated in the paper.The test shows that the full-length hollow casing with I-shaped section is not suitable for construction of long tube-sinking cast-in-place piles due to its small stiffness and large deformation induced by soil-squeezing effect,while the rectangular casing with wings in bottom can make I-shaped pile into reality due to its skillful structure,stronger stiffness,strong anti-deformation ability,lower induced excess pore pressure and easy to dissipate.