Prestressed pipe pile coated with active material pile body and construction method

Abstract

The invention relates to a prestressed pipe pile coated with an active material pile body. The prestressed pipe pile is characterized in that the prestressed pipe pile is coated with a geotechnical cloth bag in the whole pile length, the bottom end of the pile is provided with a precast enlarged pile tip, the bottom of the geotechnical cloth bag is fixed to the precast enlarged pile tip in a binding mode, an annular reinforcing rib body is arranged inside the geotechnical cloth bag, the bottom of the annular reinforcing rib body is fixedly connected with a connecting rib on the precast enlarged pile tip, a meshed annular constraint body is tightly clamped to the exterior of the geotechnical cloth bag, the portion between the prestressed pipe pile and the geotechnical cloth bag is filled with active materials, and after absorbing water and swelling, the active materials are tightened by the meshed annular constraint body to form block-shaped protrusions. According to the prestressed pipe pile coated with the active material pile body, the active material hydration swelling effect is utilized, the geotechnical cloth bag and the meshed annular constraint body with which the geotechnical cloth bag is coated are matched for shaping, and the performance of the pile body can be improved; after the prestressed pipe pile is coated with the active material pile body, pile body concrete can be prevented from being corroded by underwater, and the higher technical and economic benefits are obtained. The invention further discloses a construction method of the pile body.

Description

technical field [0001] The invention relates to a prestressed pipe pile with an active material pile body and a construction method thereof, in particular to a high-strength pipe pile that is constrained and formed after the active material is hydrated and is outsourced to a prestressed pipe pile, which belongs to the field of foundation treatment and is suitable for soft It is especially suitable for foundation treatment projects in soil areas and under-consolidated soil areas, especially for foundation treatment projects under the conditions of using mud retaining wall pilot holes to plant pile foundations, and groundwater corroded concrete. Background technique [0002] Soft soil is generally fine soil particles in soft plastic to flow plastic state, such as silt and silty soil, peat soil and swamp soil, and other highly compressible saturated cohesive soil, silt, etc., among which silt and silty soil are soft The main types of soil. Soft soil foundation treatment is to ...

AI Technical Summary

Problems solved by technology

However, there are still some deficiencies, mainly reflected in the low bearing capacity of single active material piles, poor durability of thin-walled pipe piles under corrosive working conditions, and the difficulty in controlling the shape of cement soil formed by pile side grouting.

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