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X-shaped prefabricated energy pile

An energy pile and pile body technology, which is applied to sheet pile walls, geothermal energy, heating fuel, etc., can solve the problems of damage to the heat transfer tube, doubts affecting the use, unfavorable for the overall stacking and transportation safety of the pile body, etc. The effect of increased side surface area and increased side frictional resistance

Inactive Publication Date: 2018-10-02
陆见华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the embedding method of binding the heat transfer tubes on the structural reinforcement cage in the bored pile not only affects the concrete volume in the pile, but also the heat transfer tubes are easily damaged during the centrifugal method, and the risk of corrosion of the reinforcement cage is increased , thus affecting the bearing capacity and durability of the pile foundation
The outer shape of the prestressed pipe pile is round, which is not conducive to the overall stacking and transportation safety of the pile body; and its central hole is small, which is not conducive to the arrangement of heat transfer tubes
It is these technical deficiencies and problems that affect the doubts of pile foundation design engineers about the use of pile-buried ground-source heat pump technology, and ultimately affect the popularization and application of pile-buried ground-source heat pump technology

Method used

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  • X-shaped prefabricated energy pile
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  • X-shaped prefabricated energy pile

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 , figure 2 As shown, the first embodiment is an X-shaped prefabricated energy pile, the energy pile body has a pile body body 1 with a square cross section, and is located at the four corners of the pile body body and integrated with the pile body body 1 Four pile corners 2 forming an X-shaped section, and a cylindrical through hole 3 is formed in the center of the main body 1 of the pile body.

[0021] The junction of the pile corner 2 and the pile body 1 is provided with a heat transfer tube I4 arranged axially along the energy pile body. The heat transfer pipes are connected, and the lower end of the heat transfer pipe I4 is connected to the heat transfer pipe II6 arranged laterally at the bottom of the energy pile body and connected to the cylindrical through hole 3 through the bend pipe 5 . A heat transfer tube IV8 is vertically arranged in the cylindrical through hole 3, and the lower end of the heat transfer tube IV is connected to the heat tr...

Embodiment 2

[0024] Such as image 3 , Figure 4 As shown, the structure of the X-type prefabricated energy pile in the second embodiment is basically the same as that in the first embodiment. The heat transfer tube III7 in the hole 3 is connected, and the end of the heat transfer tube III7 placed in the cylindrical through hole 3 communicates with the heat transfer tube.

[0025] In this example, the heat transfer pipe III7 is an iron pipe, PE or PVC pipe, and the heat transfer pipe I4, the heat transfer pipe II6 and the heat transfer pipe III7 can also be iron pipes with PE or PVC pipes inside.

Embodiment 3

[0027] This embodiment is basically the same as Embodiment 1, except that the heat transfer tube IV8 is not required in this embodiment, and the cylindrical through hole 3 communicating with the heat transfer tube II6 is used as the heat transfer channel.

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Abstract

The invention relates to an X-shaped prefabricated energy pile. The X-shaped prefabricated energy pile is simple in structure, economic and efficient, and improves the field construction efficiency and reduces the difficulty in prefabricating. According to the technical scheme, the X-shaped prefabricated energy pile is characterized by comprising a pile body with a square section, and four pile corners which are positioned at four corners of the pile body and are integrated with the pile body to form an X-shaped section; a cylindrical through hole is formed in the center of the pile body; a heat transfer pipe I which is axially distributed along the pile body is arranged at a part where the pile corners are combined with the pile body; the upper end of the heat transfer pipe I communicateswith heat pipe fittings which are distributed at the upper parts of the energy pile body; the lower end of the heat transfer pipe I is transversely arranged at the bottom part of the energy pile bodythrough an elbow and communicates with a heat transfer pipe II in the cylindrical through hole. The X-shaped prefabricated energy pile is applicable to the technical field of building pile foundations and geothermal source pumps.

Description

technical field [0001] The invention relates to an X-shaped prefabricated energy pile, which is suitable for the technical fields of building pile foundations and geothermal source pumps. Background technique [0002] Ground source heat pump technology is a technical form that utilizes shallow geothermal resources with high efficiency and energy saving. As an important part of the ground source heat pump, the success of laying the heat transfer pipe will have an important impact on the heat transfer efficiency. Using the pile foundation as the carrier of the underground pipe to realize the energy pile technology that combines the two functions of bearing the upper load and heat transfer has gradually attracted extensive attention of researchers in recent years. According to different pile foundation construction techniques, pile-buried pipe ground source heat pump technology can be mainly divided into two types: buried in cast-in-situ piles and buried in prefabricated pipe ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/30F24T10/10
CPCE02D5/30E02D2200/165
Inventor 陆见华徐日庆孔钢强陆小曼
Owner 陆见华