PCC (Large Diameter Pipe Pile by using Cast-in-place Concrete) energy pile and manufacturing method thereof

Abstract

The invention discloses a PCC (Large Diameter Pipe Pile by using Cast-in-place Concrete) energy pile. The PCC energy pile comprises a PCC pile, a heat conducting liquid, a cover plate, a bottom plate, a heat conducting pipe, a heat collecting device and an inspection channel, wherein the bottom of the PCC pile is fully closed; a cover plate with holes is arranged at the top of the PCC pile; prepared holes are formed in one side at the upper part of the PCC pile; the heat conducting liquid is filled up in a cavity in the PCC pile; the heat conducting pipe penetrates through the holes in the cover plate and extends into the heat conducting liquid in the cavity in the PCC pile; the heat conducting pipe extending into the cavity in the PCC pile can adopt opened and closed modes; the inspection channel is formed in the side wall of the PCC pile; and the heat conducting pipe is led out of the cavity in the PCC pile through the holes in the cover plate or the inspection channel and connected with the heat collecting device to form a circulating channel of the heat conducting liquid. The invention further discloses a manufacturing method for the pile. The manufacturing method comprises the technical steps as follows: pouring the PCC pile; excavating pile core soil; making a bottom plate; mounting the heat conducting pipe and the cover plate; filling the heat conducting liquid; and starting a ground heat pump for forming a loop. The PCC energy pile is convenient to overhaul and maintain, wide in application range and low in construction cost, does not influence the bearing capacity, and is an economic, efficient, energy-saving and emission-reducing pile.

Description

technical field [0001] The invention belongs to the technical field of civil construction engineering, and in particular relates to a PCC pile energy pile and a using method. Background technique [0002] Geothermal resources are a kind of clean energy with wide distribution, low cost and convenient use, and have broad development and application prospects. Ground source heat pump technology uses the relatively stable characteristics of underground soil, surface water, and groundwater temperature to transfer heat from low-level heat sources to places that need heating or heating in winter by consuming electric energy. The waste heat is transferred to the low-level heat source to achieve the purpose of cooling or cooling. Ground source heat pumps do not require artificial cold and heat sources, and can replace traditional heating methods such as boilers or municipal pipe networks and central air-conditioning systems. In winter, it replaces boilers to obtain heat from soil, ...

AI Technical Summary

Problems solved by technology

Although this kind of energy pile does not increase the land area, it has the following disadvantages: (1) The U-shaped pipe is bound on the steel cage and buried in the concrete, and is deformed together with the pile body, which may easily cause deformation and damage to the pipe; ( 2) The U-shaped pipe is buried in the concrete, which cannot be recycled, reused, or repaired. Problems in the process of use cannot be remedied; Loss of heat source; (4) The U-shaped pipe is buried in the concrete, which causes stress concentration around the U-shaped pipe when the pile is stressed, which is not conducive to the stress of the pile body, prone to local damage, and the bearing capacity of the pile is reduced

(5) The cost of prefabricated piles is relatively high, and the diameter of prefabricated piles is generally small, that is, the surface area of ​​the pile side is small, and the heat collection capacity is limited

The inner and outer diameters of this pile type are both large, generally more than 1m. It has a large-diameter pile core, and a large internal space can be obtained by hollowing out the large-diameter pile core soil. Take advantage of

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