Prestressed concrete-filled steel tube pile

Abstract

The invention relates to the technical field of steel pipe concrete pipe piles, in particular to a prestressed concrete-filled steel tube pile. The prestressed concrete-filled steel tube pile comprises a connecting mechanism, a stabilizing mechanism and an extrusion supporting mechanism. The connecting mechanism is mainly composed of an upper connecting disc, a lower connecting disc and a pile body, the upper connecting disc is matched with the lower connecting disc, the length of the pile body can be increased by connecting the upper connecting disc and the lower connecting disc, the stabilizing mechanism is arranged in the pile body on the connecting mechanism, the extrusion supporting mechanism is arranged above the stabilizing mechanism, and the extrusion supporting mechanism is arranged in the pile body; and the connecting mechanism is provided with the upper connecting disc and the lower connecting disc which are matched for use, two pipe piles can be connected, the length of the pipe piles is increased, the stabilizing mechanism can extend out of a telescopic cone from an opening after the pipe piles are driven into soil, the telescopic cone can be inserted into the surrounding soil to play a role in fixing and stabilizing the pipe piles, the extrusion supporting mechanism can extend out of a supporting rod in the pipe piles, and the pipe piles are prevented from being extruded and deformed.

Description

technical field [0001] The invention relates to the technical field of steel pipe concrete pipe piles, in particular to a prestressed steel pipe concrete pipe pile. Background technique [0002] Prestressed concrete pipe pile is a hollow cylindrical slender concrete prefabricated component, which is mainly composed of cylindrical pile body, end plate and steel ferrule. wide. [0003] Prestressed concrete pipe piles have many advantages such as low cost per unit bearing capacity, strong controllability of pile quality, and a wide range of design options. However, prestressed concrete pipe piles are not suitable for penetrating thick and hard soil layers. Among them, the prestressed concrete pipe pile will gradually become weaker with the growth of time, and the interior of the prestressed concrete pipe pile is hollow, the bending and shear resistance is relatively weak, and it is prone to deformation. The length of a single precast pile is not large. Long piles need to be s...

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Problems solved by technology

[0003] Prestressed concrete pipe piles have many advantages such as low cost per unit bearing capacity, strong controllability of pile quality, and a wide range of design options. However, prestressed concrete pipe piles are not suitable for penetrating thick and hard soil layers. Among them, the prestressed concrete pipe pile will gradually become weaker with the growth of time, and the interior of the prestressed concrete pipe pile is hollow, the bending and shear resistance is relatively weak, and it is prone to deformation. The length of a single precast pile is not large. Long piles need to be connected to piles, and the joints often form the weak link of the pile body, which even restricts its bearing capacity

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