Plastic sleeve energy source pile structure and construction method

Abstract

The invention relates to a plastic sleeve energy source pile structure. The plastic sleeve energy source pile structure comprises plastic sleeve piles, heat exchange pipes, a main water supply pipe, amain water outlet pipe, water supply branch pipes, water outlet branch pipes, a pump machine and a ground source heat pump unit; cover plates are arranged at the tops of the plastic sleeve piles, andprefabricated pile tips are arranged at the bottoms of the plastic sleeve piles; outer rings of pile bodies of the plastic sleeve piles are plastic sleeves, and reinforcement cages are arranged in the plastic sleeves and concrete is poured into the plastic sleeves; the heat exchange pipes are fixed to the outer parts of the plastic sleeves and are evenly distributed on the surfaces of the pile bodies of the plastic sleeves, and the tops of the heat exchange pipes penetrate through reserved small holes formed in the cover plates and are correspondingly connected with the water supply branch pipes or the water outlet branch pipes in the same travel; and the water supply branch pipes and the water outlet branch pipes are horizontally arranged in a roadbed. The plastic sleeve energy source pile structure has the beneficial effects that the heat exchange pipes are paved by utilizing annular gaps between the plastic sleeves and sinking pipes, and the heat exchange pipes are protected, and the deformation forming, bending or leakage damage to the heat exchange pipes caused by the collision with the heat exchange pipes in the pipe sinking process or in the process of concrete pouring areavoided.

Description

technical field [0001] The invention belongs to the field of pile foundation engineering, and in particular relates to a plastic casing energy pile structure and a construction method, which are suitable for application in embankment soft foundation reinforcement engineering, especially in urban municipal soft foundation roads. Background technique [0002] With the increasingly serious problem of environmental pollution, geothermal energy, as a green and clean energy, is gradually being researched and utilized by people. The ground source heat pump technology realizes the heat exchange with the soil through the heat exchange tube embedded in the constant temperature soil layer, absorbs heat from the constant temperature soil layer in the heating mode, and provides heating for the ground surface or nearby houses; in the cooling mode It absorbs and discharges the heat from the outside into the formation, and plays the role of temperature regulation for warming in winter and c...

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Problems solved by technology

[0004] In summary, both energy piles and plastic casing piles have great application prospects, but the existing energy pile technology has problems such as difficulty in pre-embedding heat exchange tubes, easy damage, and low heat conduction efficiency. solve

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