Prestressed concrete precast pile

Abstract

The invention discloses a prestressed concrete precast pile. The prestressed concrete precast pile comprises a precast pile body with a square cross section, wherein the precast pile body comprises two end plates, a pile body and prestressed reinforcements, the pile body is arranged between the two end plates, and the prestressed reinforcements are arranged in the pipe body and connected with the two end plates; bulge rib which longitudinally extends to an end and a first groove which longitudinally extends and penetrates through the end are arranged on an outer side surface of the precast pile body; and a second groove and a third groove which are corresponding to positions of the bulge rib and the first groove respectively, matched in shape and size and longitudinally extend and penetrate through an end of the precast pile body are formed in one outer side surface which is not adjacent to the outer side surface. According to the prestressed concrete precast pile, the construction is convenient, the engineering cost can be reduced, the water stopping effect is enhanced, and the prestressed concrete precast pile has good bending and shearing resistance.

Description

technical field [0001] The invention relates to the technical field of pile foundation engineering, in particular to a prestressed concrete prefabricated pile. Background technique [0002] At present, it is used for the foundation support, enclosure and retaining wall of multi-storey basements, underground railways, and underground commercial streets, mainly using bored piles or cement mixing piles; It can be made into cantilever retaining wall, single support retaining wall, multi-layer support retaining wall, etc. according to the excavation depth. , the common way of arrangement is that the straight boards are arranged at intervals, and behind the piles, cement mixing piles, rotary spray piles, tree root piles, etc. are used to block water. Cement mixing piles are generally used as foundation treatment and anti-seepage curtain. Bored cast-in-situ piles are prone to hazards such as subsidence of the adjacent ground, tilting of houses, cracks in roads, or damage to u...

AI Technical Summary

Problems solved by technology

Bored piles are prone to hazards such as subsidence of the adjacent ground, tilting of houses, cracks in roads, or damage to underground facilities.

During the construction of cement mixing piles, the quality of cement mixing soil fluctuates greatly, and quality control is difficult. After excavation, the outer wall needs to be treated separately, and the project cost is high.

[0003] In addition, some existing prestressed concrete pipe piles or square piles are used for the protection of some foundation pits. However, due to the circular shape of the pipe piles, the water-stop effect is poor, and additional water-stop construction is required, while the existing prestressed concrete square piles It is easy to incline in the enclosure of soft soil foundation pit, and the stability of the pile body is poor

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