A device for synchronous grouting prestressed pipe pile

Abstract

The invention discloses a synchronous grouting pre-stressed pipe pile. The synchronous grouting pre-stressed pipe pile comprises a pile driver, a pile hammer, a grouting outer pipe, a first pipe pile,a second pipe pile and a grouting structure, wherein the grouting outer pipe is of a hollow structure, two ends of which are communicated; the lower end of the first pipe pile is located in the grouting outer pipe; the grouting structure comprises a support frame, a slurry separation chamber, a slurry-out branch pipe, a pipeline connector, a slurry-out pipe, a second slurry-in pipe and a first slurry-in pipe; a first positioning seat is mounted at the upper end of the first pipe pile; and a second positioning seat is mounted at the lower end of the second pipe pile. The synchronous grouting pre-stressed pipe pile has the advantages that an inner / outer synchronous grouting manner is adopted, so that plenty of slurry is poured to the inner and outer parts of the pipe piles so as to improvethe pipe pile fixing effect, and the first positioning seat is matched with the second positioning seat to ensure that the butt joint between the pipe piles is more convenient and higher in accuracy.

Description

technical field [0001] The invention relates to the technical field of pipe pile grouting in building construction, in particular to a device for synchronous grouting prestressed pipe piles. Background technique [0002] Prestressed pipe piles have the advantages of fast construction speed, low cost, and high bearing capacity, but they have small pile diameters and low horizontal load bearing capacity. In soft soil, due to the large distance between the strength of the pile body and the strength of the soil, it cannot be fully utilized. Therefore, in the specific installation process of pipe piles, it is necessary to grout the pipe piles. Through grouting, the mechanical properties of the soil and the boundary conditions between the piles and soils are changed, and the rock and soil around the piles The strength and stability are further improved, thereby increasing the bearing capacity of the pile foundation and reducing settlement. [0003] A pipe pile is driven into the ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the grout outlet in the prior art is easily blocked by soil. Even if there is no blockage, only a small amount of grout will infiltrate the outside of the pipe pile through the grouting hole. There is no effective fixation between the layers, and a device for synchronous grouting prestressed pipe piles is proposed

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