Advantages and disadvantages of precast piles

Advantages: the precast pile has low production cost, low reinforcement ratio, steel saving, environmental protection of hollow pile, small diameter, large specific surface area, large bearing capacity of concrete single pile, simple construction and low technical difficulty.

Disadvantages: The soil squeezing effect of precast piles in saturated cohesive soil is negative, which will lead to quality accidents such as pile breaking and necking of cast-in-place piles. For extruded precast concrete piles and steel piles, the piles will float, reducing the bearing capacity and increasing the settlement. The soil squeezing effect will also cause damage to surrounding houses and municipal facilities; It is positive in loose soil and unsaturated fill, which will play a role in densification and improve bearing capacity.