Construction Method for an Integrated Geothermal Pipe System in Underground Structure Floor Layers
Patent Information
- Authority / Receiving Office
- KR · KR
- Patent Type
- Patents
- Current Assignee / Owner
- MA IN ENG & ARCHITECTS CO LTD
- Filing Date
- 2026-03-23
- Publication Date
- 2026-08-03
Smart Images
Figure 112026034741292-PAT00004_ABST
Abstract
Description
Technology Field
[0001] The present invention relates to a method for constructing an integrated geothermal pipe in the floor layer of an underground structure that provides heating and cooling using geothermal energy as a heat source. Background Technology
[0002] Commonly used energy sources include fossil fuels such as coal, oil, and natural gas. However, fossil fuels pollute the environment due to various pollutants generated during combustion and have limited reserves.
[0003] Therefore, in recent years, the development of alternative energy sources to replace them has been actively underway. Among these alternative energies, research on renewable energy sources such as wind power, solar energy, and geothermal energy has been conducted for a long time, and heating and cooling systems utilizing them are actually being installed and used. However, while these renewable energies have the advantage of being clean energy that causes almost no impact on environmental pollution and climate change and can be obtained indefinitely, they have the drawback of having extremely low energy density. Consequently, increasing that density and converting it into a usable form is considered the key challenge in the development of renewable energy.
[0004] One of these new and renewable energy sources gaining attention is the geothermal energy system, which uses geothermal energy as a heat source for heating and cooling. The geothermal energy system is a technology that utilizes geothermal energy at 10–20°C as a heat source by installing heat exchangers to recover the heat or release it into the ground. In other words, while the annual atmospheric temperature in regions with distinct seasonal changes varies significantly from -20°C to 40°C, the underground temperature remains almost constant at 10–20°C year-round at depths of 5 meters or less.
[0005] Therefore, when cooling in the summer, the temperature of the air source is 30°C or higher, so a large amount of electricity is consumed to discharge the cooling heat, whereas the geothermal source discharges heat smoothly at 10 to 20°C, thus exhibiting high efficiency. Conversely, when heating in the winter, the air source has a temperature as low as -20°C, making it difficult to supply the heat required for heating, whereas the geothermal source has a temperature of 10 to 20°C, allowing for the stable supply of heating heat.
[0006] Heating and cooling systems utilizing such geothermal energy are known to be highly energy-efficient, making them an essential technology in the current situation where energy resources are scarce and energy costs are high.
[0007] To construct a heating and cooling system utilizing such geothermal energy, geothermal pipes carrying a refrigerant must be buried underground, and heat exchange must be achieved as the refrigerant circulates along the pipes and through the heating and cooling system.
[0008] When examining the construction process of such underground structures, the reverse construction method is being used for reasons such as structural safety, shortened construction time, prevention of damage to surrounding ground and adjacent buildings, and reduction of noise and vibration.
[0009] As illustrated in FIG. 1 (a) to (c), the reverse construction method involves installing a retaining wall (10) and then installing a frame (30) including girders or beams via intermediate piles (20) to support the retaining wall (10). Once this bracing structure is formed, construction is carried out by excavating the lower surface. This process is repeated up to the foundation floor surface (BF), and this is referred to as the underground excavation process. Once the underground excavation process is completed, an underground structure is constructed. Specifically, as illustrated in FIG. 1 (d) and (e), starting with the foundation concrete construction of the floor layer (40) and floor wall (41) from the foundation floor surface (BF), the underground layer (50) and underground outer wall (51) are constructed sequentially, and the construction is completed up to the first floor (60) above ground to complete the underground structure.
[0010] In order to excavate to a deep underground level during the above underground excavation process, a retaining wall (10) to prevent the collapse of soil due to earth pressure and a waterproof grouting (not shown) to block groundwater must be constructed. The retaining wall (10) and grouting constructed to build the underground floor of such a building are referred to as temporary construction work.
[0011] Among these temporary construction methods, earth retaining wall construction techniques include pile sheet retaining walls, Soil Cement Walls (SCW), Diaphragm Walls, and Cast-In-Place (CIP) methods. Of these, the CIP method is primarily used for constructing basements due to its superior rigidity compared to pile sheet retaining walls and soil cement walls.
[0012] Specifically, the CIP method is a type of small-diameter concrete pile made by drilling a hole at a predetermined location with an earth auger as shown in FIG. 2, inserting an H-PILE (11) or a pre-assembled reinforcing mesh (12), and then filling it with concrete (13). It is a method of forming a continuous row of such concrete piles to form a wall with high rigidity. The construction sequence proceeds in the order of drilling with an auger screw, inserting the H-PILE (11) and reinforcing mesh (12), pouring concrete (13), curing, excavation, and installation of bracing.
[0013] The reason the CIP method described above is primarily used in construction projects is that, as previously mentioned, the wall rigidity is greater compared to other methods, resulting in minimal displacement of the surrounding ground and ease of application to irregular planes; furthermore, because drilling is performed on a single axis, work can be carried out without difficulty even in poor soil conditions, such as underlying gravel layers.
[0014] However, since the purpose is to prevent soil collapse and block groundwater for a short period before the underground structure of the building is constructed, the CIP wall (10) constructed using the above CIP method is removed after the underground structure is installed, and the earth pressure is subsequently supported by the underground structure. In conventional building construction, as described above, the underground structure construction is performed twice after the construction of the CIP wall (10), making the process complex and the economic burden significant.
[0015] Accordingly, in order to save time and economic costs, a technology is being introduced to form a composite wall by combining it with the underground outer wall (51) of the underground structure as shown in FIG. 3, without removing the CIP wall (10).
[0016] In this regard, Korean Registered Patent No. 10-2790627 (hereinafter referred to as the 'prior art') discloses a 'method for constructing geothermal pipes when constructing underground structures using the CIP method'.
[0017] The geothermal pipe construction method of the prior art includes a CIP wall installation stage, an underground excavation and frame layout construction stage, a lean layer formation stage, a heat exchange line installation stage, and a supply and suction line connection stage.
[0018] The above-mentioned discharge and suction line connection step involves installing the discharge and suction lines of the geothermal pipes, which are respectively connected to both ends of the heat exchange line to move the refrigerant, in the empty spaces between the concrete piles forming the CIP wall.
[0019] However, in the geothermal pipe construction method described in the prior art, the discharge and suction lines of the geothermal pipes that transport the refrigerant are installed on the underground structure side relative to the CIP wall, so the discharge and suction lines are located closer to the indoors of the basement floor than to the CIP wall. In other words, as the discharge and suction lines come into direct contact with the floor wall and the basement wall, the indoor temperature of the basement floor affects the discharge and suction lines through the floor wall and the basement wall. Consequently, the refrigerant, which has exchanged heat with the geothermal energy in the ground at the heat exchange line, reaches each floor of the building after exchanging heat with the floor wall and the basement wall while moving along the suction line. Additionally, the refrigerant, which has exchanged heat with each floor of the building, reaches the heat exchange line after exchanging heat with the floor wall and the basement wall while moving along the discharge line. Therefore, to maximize the heat exchange efficiency of the geothermal pipes, it is necessary to improve the installation of the discharge and suction lines. The problem to be solved
[0020] Embodiments of the present invention relate to a method for constructing an integrated geothermal pipe in the bottom layer of an underground structure, and provide a construction method for optimizing the installation of a discharge and suction line.
[0021] Embodiments of the present invention provide a construction method for maximizing the heat exchange efficiency of a geothermal pipe. means of solving the problem
[0022] The method for constructing an integrated geothermal pipe for the bottom layer of an underground structure described in this application may include a CIP wall installation step, an underground excavation and frame placement construction step, a lean layer formation step, a heat exchange line installation step, and a supply and suction line connection step.
[0023] The CIP wall installation stage may be a stage of continuously constructing concrete piles using the CIP method to prevent soil collapse due to earth pressure before excavating the underground site when constructing an underground structure.
[0024] The underground excavation and frame placement construction phase may be a phase in which the frame placement construction is carried out in stages while excavating downwards to the foundation floor surface inside the CIP wall.
[0025] The lean layer formation step may be a step of forming a lean layer by pouring lean concrete onto the foundation floor surface.
[0026] The heat exchange line installation step may be a step of horizontally installing a heat exchange line on the upper part of the waste layer, in which the refrigerant of the geothermal tube exchanges heat.
[0027] The discharge suction line connection step may be a step of connecting a discharge suction line that moves the refrigerant of the geothermal tube to each end of the heat exchange line.
[0028] The CIP wall installation stage may include a drilling stage, a mesh joining stage, a mesh insertion stage, and a pouring stage.
[0029] The drilling stage may be the stage of drilling a hole in the ground.
[0030] The mesh coupling stage may be a stage of coupling the transmission suction line to the rebar mesh.
[0031] The mesh insertion step may be a step of inserting a reinforcing mesh into a hole.
[0032] The pouring stage may be the stage of pouring concrete into the hole.
[0033] The discharge and suction line may include a vertical line and a connecting line.
[0034] Vertical lines can be long in the vertical direction. Vertical lines can be placed on the centerline of the rebar mesh.
[0035] The connecting line can be extended horizontally from the bottom of the vertical line. The connecting line can be connected to the heat exchange line.
[0036] In the mesh insertion step, the positioning device can bring the end of the connection line into close contact with the side of the hole.
[0037] The positioning device may include a vertical bar, a vertical pipe, a vertical cylinder, a horizontal pipe, a horizontal bar, and a spring.
[0038] The vertical bar can be extended downward from the bottom of the discharge / suction line.
[0039] The vertical pipe can be inserted so that the lower part of the vertical bar can move in the up-and-down direction. The vertical pipe may be equipped with a cutting blade at the top.
[0040] The vertical cylinder can be coupled to the vertical bar. The vertical cylinder can form a space between itself and the vertical bar for the cutting blade to move in the up-and-down direction.
[0041] The horizontal pipes can extend radially from the outer surface of the vertical cylinder.
[0042] The horizontal bars can be movably inserted into the horizontal pipes. The horizontal bars can be connected to the vertical bars by connecting lines.
[0043] Springs can be provided inside each horizontal pipe. The springs can press the horizontal bar toward the side of the hole.
[0044] In the mesh insertion step, when the vertical pipe moves upward by the bottom surface of the hole and the cutting blade cuts the connecting line, the horizontal bar can be pressed against the side of the hole by the spring.
[0045] The positioning device may include a balloon and a vertical needle.
[0046] The balloon can be attached to the bottom of the vertical pipe.
[0047] The vertical pin can extend downward from the bottom of the vertical bar.
[0048] The vertical pipe can form a through hole through which the vertical needle moves toward the balloon.
[0049] When the vertical pipe moves upward by the bottom of the hole and the cutting blade cuts the connecting strings respectively, the vertical needle can pop the balloon.
[0050] The lid can wrap around the end of the connecting line.
[0051] The lid may be removed during the underground excavation and frame placement phases.
[0052] The outer surface of the discharge and suction lines can be wrapped with insulation.
[0053] The method for constructing an integrated geothermal pipe for the bottom layer of an underground structure described in this application may include a water channel installation step of installing a water channel including a porous vertical pipe in the empty space between concrete piles.
[0054] The upper part of the water flow path may be adjacent to the surface where the heat exchange line is installed.
[0055] The moisture channel installation step may include an absorbent material insertion step, a channel burial step, and a moisture supply network formation step.
[0056] The absorbent material insertion step may be a step of inserting a moisture absorbent material into a porous vertical pipe.
[0057] The Euro landfill stage may be a stage where the lower part of the moisture channel is landfilled below the waste layer.
[0058] The moisture supply formation step may be a step of connecting a branched moisture channel to the upper part of the moisture channel, which branches off toward the heat exchange line, so that the moisture channel forms a shape that extends toward the heat exchange line.
[0059] The method for constructing an integrated geothermal pipe for the bottom layer of an underground structure described in this application may further include a step of forming a heat exchange unreinforced layer by pouring unreinforced concrete onto the upper surface of a waste layer so that the heat exchange line and the branch moisture channel are buried.
[0060] The heat exchange layer formation step may include a first pouring step and a second pouring step.
[0061] The first pouring step may be a step of pouring a high thermal conductivity filler onto the surface using a branched moisture oil.
[0062] The second pouring step may be a step of pouring plain concrete on the upper surface of the lean layer.
[0063] The heat exchange line may include a first heat exchange line, a second heat exchange line, and a connecting line.
[0064] The first heat exchange line can be long in one direction.
[0065] The second heat exchange line can be parallel to the first heat exchange line.
[0066] The connecting line can connect the first heat exchange line and the second heat exchange line.
[0067] The end of the branch water channel can be closely attached to the joint line.
[0068] The heat exchange line may include a first heat exchange line and a second heat exchange line.
[0069] The first heat exchange line can be long in one direction.
[0070] The second heat exchange line can be connected to the first heat exchange line. The second heat exchange line can be parallel to the first heat exchange line.
[0071] The branch water oil can be extended between the first heat exchange line and the second heat exchange line.
[0072] It may include a heat-conducting pin connecting the first heat exchange line, the branch water flow path, and the second heat exchange line in sequence.
[0073] The thermally conductive pin may include a first connecting pin portion, a second connecting pin portion, and a deforming pin portion.
[0074] The first coupling pin portion can be coupled to the first heat exchange line.
[0075] The second connecting pin can be connected to the branch water flow path.
[0076] The deformable pin portion can connect the first connecting pin portion and the second connecting pin portion. The deformable pin portion can elastically deform according to the gap between the first connecting pin portion and the second connecting pin portion. Effects of the invention
[0077] According to embodiments of the present invention, the installation of the discharge suction line can be optimized.
[0078] According to embodiments of the present invention, the heat exchange efficiency of the geothermal pipe can be improved, the construction method can be simplified, and the process can be shortened. Brief explanation of the drawing
[0079] Figure 1 is a side view illustrating the construction process of an underground structure construction method according to conventional technology. Figure 2 is a cross-sectional view illustrating the state in which the underground outer wall of an underground structure is constructed after installing the earth retaining wall of the conventional technology of Figure 1 as a CIP wall of the CIP method. FIG. 3 is a cross-sectional plan showing a combined wall structure of a CIP wall and an underground outer wall according to the prior art. FIG. 4 is a flowchart illustrating an embodiment of a method for constructing an integrated geothermal pipe for the bottom layer of an underground structure according to an embodiment of the present invention. FIG. 5(a) is a side cross-sectional view illustrating the CIP wall installation step of the embodiment of FIG. 4. FIG. 5(b) is a side view illustrating the initial excavation and first-floor frame construction stages during the underground excavation and frame placement construction stage of the embodiment of FIG. 4. FIG. 6 is a drawing illustrating the installation steps of a CIP wall according to an embodiment of the present invention. FIG. 7(c) is a side view illustrating the additional excavation and basement frame construction stages during the basement excavation and frame placement construction stage of the embodiment of FIG. 4. FIG. 7(d) is a side view illustrating the step of forming the discard layer in the embodiment of FIG. 4. FIG. 8 is a local perspective view illustrating an embodiment of FIG. 7(d). FIG. 9 is a diagram illustrating the mesh insertion step of the CIP wall installation step according to an embodiment of the present invention, and is a side view illustrating the state in which a positioning device is used in the mesh insertion step. FIG. 10 is a plan view illustrating the mesh insertion step of the CIP wall installation step according to an embodiment of the present invention, showing the state in which a positioning device is used in the mesh insertion step. Figure 11 is a partial enlarged view of Figure 9(a). FIG. 12 is a drawing showing the positioning device of FIG. 9(a) in a state where the end of the connecting line is pressed against the side of the hole. Figure 13 is a partial enlarged view of Figure 9(b). FIG. 14 is a side view illustrating the heat exchange line installation step and the discharge suction line connection step, respectively, of the embodiment of FIG. 4. FIG. 15 is a local perspective view illustrating an embodiment of FIG. 14. FIG. 16 is a perspective view illustrating the Euro landfill step of the embodiment of FIG. 4. FIGS. 17 to 19 are perspective views illustrating the moisture supply network formation step of the embodiment of FIG. 4. FIG. 20(g) is a side view illustrating the step of forming a heat exchange layer in the embodiment of FIG. 4. FIG. 20(h) is a side view illustrating the floor layer and floor wall formation stage. FIG. 21 is a local perspective view of an embodiment of FIG. 20(g). FIG. 22 is a local perspective view illustrating an embodiment of FIG. 20(h). FIG. 23(i) is a side view illustrating the basement floor and basement wall formation step of the embodiment of FIG. 4. FIG. 24(j) is a side view illustrating the bottom layer waterproofing coating step of the embodiment of FIG. 4. FIG. 24 is a schematic perspective view illustrating the state in which each of the heat exchange lines of the geothermal tubes provided in the heat exchange line installation step and the discharge suction line connection step of the embodiment of FIG. 4 is installed to form an upper and lower height difference. FIG. 25 is a side view illustrating another embodiment of the heat exchangerless layer formation step among the embodiments of FIG. 4. FIG. 26 is a local perspective view illustrating an embodiment of FIG. 25. Specific details for implementing the invention
[0080] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts unrelated to the description in the drawings have been omitted, and the same reference numerals have been used throughout the specification for identical or similar components.
[0081] The words and terms used in this specification and claims are not limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention in accordance with the principles by which the inventor defines terms and concepts to best describe his invention.
[0082] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to preferred embodiments of the present invention and do not represent all technical concepts of the present invention; thus, various equivalents and modifications that may replace such configurations may exist at the time of filing the present invention.
[0083] In this specification, terms such as “comprising” or “having” are intended to describe the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should not be understood as precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.
[0084] The statement that a component is "in front," "rear," "upper," or "lower" of another component includes, unless there are special circumstances, not only being positioned "in front," "rear," "upper," or "lower" in direct contact with the other component, but also cases where another component is positioned in between. Furthermore, the statement that a component is "connected" to another component includes, unless there are special circumstances, not only being directly connected to each other, but also being indirectly connected to each other.
[0085] The construction method (S10) for an integrated geothermal pipe (400) in the floor layer of an underground structure according to an embodiment of the present invention may include, as illustrated in FIG. 4, a step of installing a CIP wall (S100), a step of excavating the underground area and arranging the frame (S200), a step of forming a lean layer (S300), a step of installing a heat exchange line (410) (S400), a step of connecting a discharge and suction line (S500), a step of installing a moisture channel (S600), a step of forming a heat exchange layer without reinforcement (S700), a step of forming a floor layer and a floor wall (S800), a step of forming an underground layer and an underground wall (S900), and a step of waterproofing the floor layer (S1000).
[0086] First, the CIP wall installation step (S100), as illustrated in FIGS. 5 and 6, is a step of forming small-diameter concrete piles (110) by inserting pre-assembled reinforcing mesh (20) and filling with concrete to prevent soil collapse due to earth pressure before excavating the underground structure during construction of the underground structure, and continuously forming these cylindrical concrete piles (110). In the CIP wall installation step (S100), a CIP wall (100) of the CIP method forming a continuous row wall is installed.
[0087] As illustrated in FIG. 4, the CIP wall installation step (S100) includes a drilling step (S110), a mesh joining step (S120), a mesh insertion step (S130), and a pouring step (S140).
[0088] The drilling step (S110) is a step of drilling a hole (11) in the ground (10) to a predetermined depth (hereinafter 'first depth') using an auger device (see FIG. 6(a)).
[0089] The mesh joining step (S120) is a step of joining the output suction line (4) to the reinforcing mesh (20) (see FIG. 6(a)). The output suction line (4) includes a vertical line (401) and a connecting line (402). The vertical line (401) forms a long pipe shape in the vertical direction. The vertical line (401) can be joined to the reinforcing mesh (20) by a plurality of wires (401a) along the longitudinal direction. With the vertical line (401) positioned on the centerline of the reinforcing mesh (20), one end of the wires (401a) can be joined to the vertical line (401), and the other end of the wires (401a) can be joined to the reinforcing mesh (20). The wires (401a) can be arranged radially around the vertical line (401) to firmly join the vertical line (401) to the reinforcing mesh (20).
[0090] The connecting line (402) extends horizontally from the lower end of the vertical line (401). In the discharge suction line connection step (S500), the connecting line (402) is connected to the heat exchange line (410). The end of the connecting line (402) protrudes radially by a first length centered on the centerline of the vertical line (401). The first length is equal to the radius of the hole (11). Thus, with the centerline of the reinforcing mesh (20) aligned with the centerline of the hole (11), the end of the connecting line (402) is in close contact with the side wall of the hole (11). The diameter of the hole (11) can be determined by the nominal diameter of the auger. Therefore, the operator can determine the first length by referring to the nominal diameter of the auger.
[0091] The mesh insertion step (S130) is a step of inserting a reinforcing mesh (20) combined with a discharge suction line (4) into a hole (11). The worker inserts the reinforcing mesh (20) into the hole (11) such that the centerline of the reinforcing mesh (20) aligns with the centerline of the hole (11). Thus, in the mesh insertion step (S130), the end of the connecting line (402) is in close contact with the side of the hole (11) (see FIG. 6(b)). The end of the connecting line (402) can be covered by a lid (404). Thus, soil from the ground (10) does not penetrate into the connecting line (402). In the mesh insertion step (S130), the worker inserts the reinforcing mesh (20) into the hole (11) such that the end of the connecting line (402) faces toward the foundation bottom surface (BF). Accordingly, in the discharge suction line connection step (S500), the connection line (402) is connected to the heat exchange line (410).
[0092] The pouring step (S140) is the step of pouring concrete (C) into the hole (11) (see FIG. 6(c)). Concrete (C) is poured into the hole (11) through the concrete injection pipe (P). The end of the connecting line (402) can be covered by a lid (404). Thus, the concrete (C) is prevented from penetrating into the connecting line (402). Afterwards, these cylindrical concrete piles (110) are continuously formed to form a continuous wall.
[0093] The CIP wall (100), which is a temporary structure, is to be removed after the main facility's underground structure is installed. However, in the present invention, it is characterized by being combined with the floor wall (610) and underground wall (710), which are the main facility's underground structure and will be described later. Meanwhile, although not shown in the drawing, water-blocking grouting to block groundwater can be installed on the outer side of the CIP wall (100). The outer surface of the discharge suction line (4) can be covered with an insulating material (405). Thus, heat exchange between the concrete pile (110) and the discharge suction line (4) can be blocked.
[0094] The underground excavation and frame placement construction stage (S200) involves excavating downwards into the inner side of the CIP wall (100) down to the foundation floor surface (BF) of the underground structure, as illustrated in FIGS. 5(b) and 7(c), and performing the placement of the frames (200) for each underground floor in stages. Specifically, the underground excavation and frame placement construction stage (S200) includes an initial excavation and ground floor frame construction stage (S210) and an additional excavation and underground floor frame construction stage (S220) (see FIG. 4).
[0095] That is, the initial excavation and ground floor frame construction stage (S210) involves performing initial excavation work and laying out the ground floor frame (200) including girders as shown in FIG. 5(b), and the additional excavation and basement frame construction stage (S220) involves performing additional excavation and laying out the frames (200) of each basement floor in stages downwards from the ground floor frame (200) to the foundation floor surface (BF) of the underground structure as shown in FIG. 7(c). Although the drawings show 4 to 5 basement floors, basement floors can be formed up to 2 to 3 basement floors or 7 to 8 basement floors as needed.
[0096] In the drilling step (S110), a hole (11) is drilled in the ground (10) to a first depth. In the mesh joining step (S120), the end of the connecting line (402) is positioned at a first height above the bottom of the reinforcing mesh (20). Thus, in the mesh insertion step (S130), the end of the connecting line (402) is positioned at approximately a first height above the bottom surface of the hole (11). Thus, the end of the connecting line (402) is located approximately 'first depth - first height' below the upper surface of the ground (10). The foundation bottom surface (BF) is located approximately a second depth below the upper surface of the ground (10). In the mesh joining step (S120), the worker may select the first height such that 'first depth - first height' is greater than the second depth (considering the height of the waste layer (300). Accordingly, the end of the connecting line (402) is positioned higher than the waste layer (300). Then, in the mesh insertion step (S130), the end of the connecting line (402) is placed in close contact with the side of the hole (11) (see FIG. 6(b)). Thus, when the additional excavation is completed, the end of the connecting line (402) is exposed from the side of the concrete pile (110) (see FIG. 8).
[0097] The end of the connecting line (402) can be covered by a lid (404). When the lid (404) is removed from the end of the connecting line (402), the end of the connecting line (402) can be sufficiently exposed (see FIG. 8). The lid (404) can be made of synthetic resin material. Thus, the operator can easily remove (destroy) the lid (404).
[0098] In the mesh insertion step (S130), the worker inserts the rebar mesh (20) into the hole (11) such that the centerline of the rebar mesh (20) aligns with the centerline of the hole (11). Thus, in the mesh insertion step (S130), the end of the connecting line (402) is in close contact with the side of the hole (11) (see FIG. 6(b)). However, due to the worker's carelessness or mistake, the centerline of the rebar mesh (20) may not align with the centerline of the hole (11). Consequently, the strength of the concrete pile (110) may exhibit asymmetry with respect to the centerline of the concrete pile (110). Additionally, the end of the connecting line (402) may not be in close contact with the side of the hole (11). Therefore, even after additional excavation is completed, the end of the connecting line (402) may not be exposed on the side of the concrete pile (110). In this case, to locate the connecting line (402), a large area of the side of the concrete pile (110) must be destroyed. Therefore, the strength of the concrete pile (110) is reduced, and the work time is long.
[0099] In the construction method (S10) of the underground structure floor layer integrated geothermal pipe (400) according to an embodiment of the present invention, in the mesh insertion step (S130), the positioning device (900) brings the end of the connecting line (402) into close contact with the side of the hole (11). Therefore, in the mesh insertion step (S130), when the worker simply inserts the reinforcing mesh (20) into the hole (11), the end of the connecting line (402) is automatically brought into close contact with the side of the hole (11) by the positioning device (900). The reinforcing mesh (20) is sufficiently long in the vertical direction relative to the radius of the hole (11). Therefore, even if the centerline (CL) of the reinforcing mesh (20) at the top of the reinforcing mesh (20) does not quite coincide with the centerline of the hole (11), the end of the connecting line (402) can maintain a state of close contact with the side of the hole (11).
[0100] As illustrated in FIGS. 9 to 13, the positioning device (900) includes a vertical bar (910), a vertical pipe (920), a vertical cylinder (930), a horizontal pipe (940), a horizontal bar (950), and a spring (960).
[0101] The vertical bar (910) extends downward from the lower part of the discharge suction line (4). The vertical bar (910) can form a cylindrical shape that is long in the vertical direction.
[0102] The lower part of the vertical bar (910) is inserted into the vertical pipe (920) so as to be movable in the vertical direction. The vertical pipe (920) can form a roughly hollow pipe shape. The vertical pipe (920) is equipped with a cutting blade (921) at the top. The cutting blade (921) can be formed along the circumference of the top of the vertical pipe (920). The top of the cutting blade (921) can form a sharp edge.
[0103] The vertical cylinder (930) is coupled to the vertical bar (910). The vertical cylinder (930) can form a roughly hollow cylinder shape. The centerlines of the vertical bar (910) and the vertical cylinder (930) coincide. The inner diameter of the vertical cylinder (930) is larger than the outer diameter of the vertical bar (910). The vertical cylinder (930) forms a space between itself and the vertical bar (910) through which the cutting blade (921) moves up and down.
[0104] The upper part of the vertical cylinder (930) is connected to the vertical bar (910). A first step portion may be formed at the lower part of the vertical cylinder (930). The first step portion may protrude toward the centerline of the vertical cylinder (930). A second step portion may be formed on the upper part of the vertical pipe (920). The second step portion may protrude radially outward from the vertical pipe (920). The second step portion rests on the upper surface of the first step portion. Thus, in the state of FIG. 9(a), the vertical pipe (920) can maintain a state of being suspended from the vertical cylinder (930).
[0105] The horizontal pipes (940) extend radially from the outer surface of the vertical cylinder (930). For example, three horizontal pipes (940) can form an angle of 120 degrees from each other with respect to the centerline of the vertical cylinder (930). The horizontal pipes (940) can form a roughly hollow pipe shape.
[0106] The horizontal bar (950) is movably inserted into each horizontal pipe (940). The horizontal bar (950) can form a cylindrical shape that is long in the horizontal direction. The horizontal bar (950) is connected to the vertical bar (910) by a connecting line (951). The connecting line (951) can be made of a synthetic resin material (CFRP, Phenolic, etc.) that is strong against tensile force but weak against shear force. A hole through which the connecting line (951) passes can be formed in the vertical cylinder (930).
[0107] Springs (960) are each provided inside the horizontal pipe (940). The springs (960) are provided as compression springs. The springs (960) are positioned in an equally elastically compressed state between the horizontal bar (950) and the vertical cylinder (930). Thus, the springs (960) form the same force that presses the horizontal bar (950) toward the side of the hole (11).
[0108] When using a positioning device (900), in the mesh insertion step (S130), the worker simply inserts the reinforcing mesh (20) into the hole (11) (see FIG. 9(a), FIG. 10(a) and FIG. 11). At this time, the worker does not need to consider whether the centerline of the reinforcing mesh (20) coincides with the centerline of the hole (11).
[0109] In the mesh insertion step (S130), when the lower end of the vertical pipe (920) is placed on the bottom surface of the hole (11), the vertical pipe (920) moves upward due to the bottom surface of the hole (11), and the cutting blade (921) cuts the connecting line (951) (see FIG. 13). Accordingly, the horizontal bar (950) moves due to the elastic recovery of the spring (960) and comes into close contact with the side of the hole (11). When the cutting blade (921) cuts the connecting line (951), the inner surface of the vertical pipe (920) forms a surface on which the lower end of the vertical bar (910) is placed. Therefore, when the cutting blade (921) cuts the connecting line (951), the positioning device (900) supports the discharge suction line (4) from the bottom surface of the hole (11). The end of the connecting line (402) can be positioned approximately a first height above the bottom surface of the hole (11) by the positioning device (900). The lower part of the vertical pipe (920) (hereinafter referred to as the 'lower pipe (922)') can be manufactured to a sufficiently long length. The first height can be adjusted by adjusting (cutting) the upper and lower lengths of the lower pipe (922) at the construction site.
[0110] When one of the horizontal bars (950) first comes into contact with the side of the hole (11), the positioning device (900) is pushed toward the centerline of the hole (11) by the force of the spring (960) pushing the horizontal bar (950). At this time, the lower end of the vertical pipe (920) moves on the bottom surface of the hole (11). The positioning device (900) is continuously pushed toward the centerline until the elastic recovery of the springs (960) becomes equal. Thus, the centerline of the reinforcing mesh (20) coincides with the centerline of the hole (11) (see FIG. 9(b), FIG. 10(b) and FIG. 13). Therefore, in the mesh insertion step (S130), when the worker simply inserts the reinforcing mesh (20) into the hole (11), the end of the connecting line (402) is automatically pressed against the side of the hole (11) by the positioning device (900).
[0111] The outer surface of the discharge suction line (4) can be covered with an insulating material (405). Therefore, heat exchange between the concrete pile (110) and the discharge suction line (4) can be blocked. Thus, the heat exchange efficiency of the geothermal pipe (400) can be maximized.
[0112] As illustrated in FIGS. 9 to 13, the positioning device (900) further includes a balloon (970) and a vertical needle (980).
[0113] The balloon (970) is attached to the bottom of the vertical pipe (920). The balloon (970) is approximately spherical in shape due to the air it is filled with. The balloon (970) is made of PVAc (polyvinyl acetate) or EVA (ethylene-vinyl acetate) material, which is hydrolyzed by the strong alkali of the concrete. Therefore, after the pouring step (S140), the balloon (970) can be hydrolyzed by the strong alkali of the concrete and disappear.
[0114] The vertical pin (980) extends downward from the bottom of the vertical bar (910). The vertical pin (980) forms a tip at the bottom that can pop the balloon (970). The lower pipe (922) forms a through hole (923) through which the vertical pin (980) moves toward the balloon (970).
[0115] When using a positioning device (900), in the mesh insertion step (S130), the worker simply inserts the reinforcing mesh (20) into the hole (11) (see FIG. 9(a), FIG. 10(a) and FIG. 11). At this time, the worker does not need to consider whether the centerline of the reinforcing mesh (20) coincides with the centerline of the hole (11).
[0116] In the net insertion step (S130), when the balloon (970) is placed on the bottom surface of the hole (11), the balloon (970) is pressed slightly, causing the vertical pipe (920) to move upward. As the vertical pipe (920) moves upward and the cutting blade (921) cuts the connecting line (951) respectively, the vertical needle (980) pops the balloon (970) (see FIG. 12). Thus, when the horizontal bar (950) moves due to the elastic recovery of the spring (960), the balloon (970) pops, and the vertical pipe (920) descends toward the bottom surface of the hole (11). A plurality of exhaust holes may be formed on the lower side of the lower pipe (922) so that the air of the balloon (970) is smoothly discharged to the outside as the balloon (970) pops.
[0117] When one of the horizontal bars (950) first comes into contact with the side of the hole (11), the positioning device (900) is pushed toward the centerline of the hole (11) by the force of the spring (960) pushing the one of the horizontal bars (950). At this time, the positioning device (900) is pushed toward the centerline of the hole (11) while descending toward the bottom surface of the hole (11). The positioning device (900) is pushed toward the centerline until the elastic recovery of the springs (960) becomes equal. Thus, the centerline of the reinforcing mesh (20) coincides with the centerline of the hole (11) (see FIG. 10(b) and FIG. 12). Therefore, in the mesh insertion step (S130), when the worker simply inserts the reinforcing mesh (20) into the hole (11), the end of the connecting line (402) is automatically pressed against the side of the hole (11) by the positioning device (900). As the positioning device (900) descends toward the bottom surface of the hole (11), it is pushed toward the centerline of the hole (11), thereby preventing the phenomenon of the positioning device (900) being pushed toward the centerline due to friction between the bottom of the lower pipe (922) and the bottom surface of the hole (11).
[0118] The lean layer formation step (S300) involves forming a lean layer (300) by pouring lean concrete onto the foundation floor surface (BF) as illustrated in FIG. 7(d) and FIG. 8. The lean layer (300) is low-strength concrete laid on the bottom of the underground structure with a thickness of about 5 to 10 cm, and is intended to ensure the quality of the floor layer (600) described later, which is the main body concrete. Before pouring the lean concrete of this lean layer (300), a sump and a guiding drain (not shown) are installed, and a permanent drainage system is formed by helping groundwater collect in the sump through the guiding drain.
[0119] The heat exchange line (410) installation step (S400) involves horizontally installing a heat exchange line (410) on the upper part of the waste layer (300) to exchange heat with the refrigerant of the geothermal pipe (400), as shown in FIG. 14(e) and FIG. 15.
[0120] The heat exchange line (410) includes a first heat exchange line (411), a second heat exchange line (412), and a connecting line (413). The first heat exchange line (411) forms a long pipe shape in one direction (horizontal). The second heat exchange line (412) forms a shape parallel to the first heat exchange line (411). The connecting line (413) connects the first heat exchange line (411) and the second heat exchange line (412). The connecting line (413) may be formed as a 180-degree bend (U-bend). The first heat exchange line (411), the second heat exchange line (412), and the connecting line (413) are each provided in multiple numbers to form a flow path through which the refrigerant in the suction line (430) flows in one direction.
[0121] The ends of the connecting lines (402) of the discharge suction line (4) are exposed on the side of the concrete pile (110). The ends of the connecting lines (402) can be covered by a lid (404). In the discharge suction line connection step (S500), the lid (404) is removed. The lid (404) may be made of synthetic resin material. Therefore, the worker can easily remove (destroy) the lid (404).
[0122] The discharge and suction line connection step (S500) connects the discharge line (420) and suction line (430) of the geothermal pipe (400) that moves the refrigerant to both ends of the heat exchange line (410), respectively, as shown in FIG. 14(f) and FIG. 15.
[0123] Since the discharge line (420) and the suction line (430) are located inside the concrete pile (110) without direct contact with the floor wall and the basement wall, the indoor temperature of the basement floor may not directly affect the discharge line (420) and the suction line (430) through the floor wall and the basement wall. The outer surface of the discharge / suction line (4) may be covered with an insulating material (405). Therefore, heat exchange between the concrete pile (110) and the discharge / suction line (4) can be blocked. Thus, the heat exchange efficiency of the geothermal pipe (400) can be maximized.
[0124] As shown in FIG. 16, the moisture channel installation step (S600) can install a moisture channel (40) capable of allowing underground moisture to flow into the empty space between concrete piles (110). The moisture channel installation step (S600) includes an absorbent material insertion step (S610), a channel filling step (S620), and a moisture supply network formation step (S630).
[0125] The moisture channel (40) may include a porous vertical pipe (40a) and a moisture absorbent (40b). The absorbent material insertion step (S610) is a step of inserting a moisture absorbent material (40b) into the porous vertical pipe (40a).
[0126] The porous vertical pipe (40a) forms a shape that is roughly hollow. The porous vertical pipe (40a) forms a shape through which a number of holes penetrate. The size of the holes formed in the porous vertical pipe (40a) can be formed such that moisture passes through but soil does not. Alternatively, a mesh, filter, etc., may be further provided in the porous vertical pipe (40a) to prevent soil from entering.
[0127] In the absorbent insertion step (S610), the inside of the porous vertical pipe (40a) is filled with a moisture absorbent (40b) through which soil cannot pass but moisture can flow. The moisture absorbent (40b) consists of a fiber bundle (Wick) with maximized hydrophilic function or an absorbent made of porous ceramic material.
[0128] The Euro burial step (S620) is a step of burying the lower part of the water channel (40) below the waste layer (300). The water channel (40) can be installed upright in the empty space between the concrete piles (110) of the CIP wall (100). The lower end of the porous vertical pipe (40a) is exposed deeper than the foundation bottom surface (BF) to come into direct contact with the underground groundwater layer. The upper end of the water channel (40) is installed adjacent to the surface where the heat exchange line (410) is installed, so that when groundwater flows in, the humidity and moisture content around the heat exchange rootless layer (500) are optimally maintained to improve heat exchange efficiency, and the water can be recirculated or discharged through the water channel (40).
[0129] As illustrated in FIG. 17, the moisture supply channel formation step (S630) is a step of connecting a branched moisture channel (41) branched toward the heat exchange line (410) to the upper part of the moisture channel (40) so that the moisture channel (40) is extended toward the heat exchange line (410).
[0130] The branched water channel (41) may include a porous horizontal pipe (41a) and a water absorbent material (41b).
[0131] The porous horizontal pipe (41a) forms a shape that is roughly hollow. The porous horizontal pipe (41a) forms a shape through which a number of holes penetrate. The size of the holes formed in the porous horizontal pipe (41a) can be formed such that moisture passes through but soil does not. Alternatively, a mesh, filter, etc., may be further provided in the porous horizontal pipe (41a) to prevent soil from entering.
[0132] The inside of the porous horizontal pipe (41a) is filled with a moisture absorbent material (41b) through which water flows but soil cannot pass. The moisture absorbent material (41b) consists of fiber bundles (Wick) with maximized hydrophilic function or an absorbent made of porous ceramic material.
[0133] The moisture supply formation step (S630) forms a moisture diffusion network by bending the upper part of the moisture channel (40) around the horizontal heat exchange line (410) or by forming a branched moisture channel (41). The end (end) of the branched moisture channel (41) is brought into close contact with the zigzag bending point of the heat exchange line (410), i.e., the connecting line (402), so that the moisture drawn up from the moisture channel (40) through capillary action can spread evenly throughout the entire heat exchange layer (500).
[0134] As illustrated in FIG. 18, the branched water channel (41) can be extended between the first heat exchange line (411) and the second heat exchange line (412) respectively so that water drawn up through capillary action in the water channel (40) can be evenly spread throughout the entire heat exchange rootless layer (500). Thus, the water in the branched water channel (41) can be uniformly supplied along the longitudinal direction of the first heat exchange line (411) and the second heat exchange line (412) through the heat exchange rootless layer (500).
[0135] As illustrated in FIG. 19, a thermally conductive pin (42) can connect the first heat exchange line (411), the branched water flow path (41), and the second heat exchange line (412) in sequence. The thermally conductive pin (42) forms a flat plate shape that is long in one direction. The thermally conductive pin (42) can form a hole or groove into which the first heat exchange line (411), the branched water flow path (41), and the second heat exchange line (412) are inserted. The thermally conductive pin (42) forms a contact surface with the first heat exchange line (411), the branched water flow path (41), and the second heat exchange line (412). The thermally conductive pin (42) is made of a metal material with high thermal conductivity.
[0136] The water channel (40) is located in a deeper underground layer than the heat exchange line (410). Additionally, water from the deeper underground layer than the heat exchange line (410) flows into the water channel (40). Therefore, in the summer, the temperature of the water channel (40) may be lower than that of the heat exchange line (410), and in the winter, the temperature of the water channel (40) may be higher than that of the heat exchange line (410). As the branch water channel (41), connected to the water channel (40) by the heat-conducting pin (42), exchanges heat with the first heat exchange line (411) and the second heat exchange line (412), the temperature of the heat exchange line (410) can be lowered further in the summer, and the temperature of the heat exchange line (410) can be raised further in the winter. Thus, the heat exchange efficiency of the geothermal pipe (400) can be maximized.
[0137] The thermal conductive pin (42) includes a first connecting pin portion (43a), a second connecting pin portion (43b), and a deformation pin portion (44). The first connecting pin portion (43a) is connected to the first heat exchange line (411). The second connecting pin portion (43b) is connected to the branch water flow path (41).
[0138] The deformable pin portion (44) connects the first connecting pin portion (43a) and the second connecting pin portion (43b). The deformable pin portion (44) forms a shape that is bent multiple times between the first connecting pin portion (43a) and the second connecting pin portion (43b). Therefore, even if the spacing between the first heat exchange line (411), the branching water flow path (41), and the second heat exchange line (412) is somewhat inconsistent due to the operator's error or skill level, the deformable pin portion (44) elastically deforms according to the spacing between the first connecting pin portion (43a) and the second connecting pin portion (43b), allowing the heat-conducting pin (42) to easily connect the first heat exchange line (411), the branching water flow path (41), and the second heat exchange line (412) in sequence.
[0139] The heat exchange unreinforced layer formation step (S700) forms a heat exchange unreinforced layer (500) by pouring unreinforced concrete (520) on the upper surface of the waste layer (300) so that the heat exchange line (410) and the branch water flow path (41) are buried, as shown in FIG. 20(g) and FIG. 21. The unreinforced concrete (520) of the heat exchange unreinforced layer (500) is concrete without reinforcement bars, and is poured so that the heat exchange line (410) and the branch water flow path (41) are buried.
[0140] As illustrated in FIG. 4, the heat exchanger layer formation step (S700) includes a first pouring step (S710) and a second pouring step (S720).
[0141] The first pouring step (S710) is a step of pouring a high thermal conductivity filler (510) onto the surface of the branch water channel (41) (see FIG. 20(g)). The high thermal conductivity filler (510) may include a silicone material as an ultra-high thermal conductivity gap filler. Alternatively, the high thermal conductivity filler (510) may include a cement-based grout material mixed with one or more of finely pulverized graphite, metal oxides, or special ceramic powders. The high thermal conductivity filler (510) may also be provided in a portion adjacent to the heat exchange line (410). Thus, the thermal conductivity of the heat exchange layer (500) can be improved.
[0142] The second pouring step (S720) is a step of pouring plain concrete (520) on the upper surface of the lean layer (300) (see FIG. 20(g)). The second pouring step (S720) may also pour plain concrete (520) containing a high thermal conductivity filler (510).
[0143] The floor layer and floor wall formation step (S800) involves forming a floor layer (600) by pouring reinforced concrete onto the upper surface of the heat exchange unreinforced layer (500) as shown in FIG. 20(h) and FIG. 22, and forming a floor wall (610) by pouring concrete into the CIP wall (100) to form a combined wall. The reinforced concrete of the floor layer (600) is concrete with reinforcing bars and is the floor concrete of the underground structure of the facility.
[0144] When a geothermal heating and cooling system is installed in a building, an indoor pipe (not shown) that exchanges heat with the indoor space of the building based on a heat pump is provided, and a geothermal pipe (400) that exchanges heat with geothermal energy from the ground is provided. Through this, during heating in winter, the indoor heat that is cooled by the outside air is exchanged with high-temperature geothermal energy from the geothermal pipe (400) to the indoor pipe to raise the indoor temperature, and during cooling in summer, the indoor heat that is heated by the outside air is exchanged with low-temperature geothermal energy from the geothermal pipe (400) to the indoor pipe to lower the indoor temperature.
[0145] Although it is sufficient for the indoor pipe to be installed as in the conventional manner along the interior of the building, the discharge line (420) and suction line (430) of the geothermal pipe (400) are each installed inside the concrete pile (110) forming the CIP wall (100), and since the geothermal pipe (400) must be installed by being buried underground, the heat exchange line (410) of the geothermal pipe (400) is buried in the heat exchange layer (500) poured between the base layer (300) and the floor layer (600) during the underground excavation phase of the building's civil engineering construction as described above.
[0146] At this time, the heat exchange line (410) installation step (S400) involves installing the heat exchange line (410) of the geothermal pipe (400) in a horizontally rounded zigzag shape as shown in FIG. 15. The reason the heat exchange line (410) is arranged in a horizontally rounded zigzag shape is not only to maximize the contact area with the geothermal energy in the ground to increase heat exchange efficiency, but also to bury it in the heat exchange layer (500) between the waste layer (300) and the floor layer (600) of the underground structure.
[0147] Additionally, as shown in FIG. 24, the geothermal pipes (400) and water passages (40) may be provided in multiple numbers, and the heat exchange line (410) and branch water passages (41) may be installed to form a vertical height difference. As the number of geothermal pipes (400) increases, the efficiency of obtaining geothermal energy inevitably increases. In particular, a heating and cooling system equipped with a large-capacity heat pump may be installed, but a system may also be provided that can be centrally controlled by individually installing a separate heating and cooling system for each floor or each section of the building. Accordingly, by providing multiple geothermal pipes (400), each geothermal pipe (400) may be connected to and operated by a single large-capacity heating and cooling system or multiple heating and cooling systems.
[0148] However, when multiple geothermal pipes (400) are provided as described above, since the heat exchange lines (410) of each geothermal pipe (400) are arranged horizontally, they may interfere with each other. Therefore, to prevent this, the heat exchange lines (410) of each geothermal pipe (400) are arranged to form a vertical height difference. In this case, as shown in FIGS. 25 and 26, the heat exchange layer (500) can also be poured in multiple vertical layers, and the discharge line (420) and suction line (430) of each geothermal pipe (400) are each installed inside the concrete pile (110) of the CIP wall (100) as shown in FIG. 26, so there is no risk of interference with each other.
[0149] Meanwhile, the basement floor and basement wall formation step (S900) is formed step by step by pouring concrete while removing the frame (200) of each basement floor (700) upward from the floor floor (600) as shown in FIG. 23(i). In this way, through the basement floor and basement wall formation step (S700), the construction of the floor floor (600) and floor wall (610) of the underground structure, and each basement floor (700) and basement wall (710) is completed.
[0150] In addition, the bottom layer waterproofing coating step (S1000) involves applying a waterproofing material to the upper surface of the bottom layer (600) as shown in FIG. 23(j). Since moisture may penetrate from the bottom layer (600), a waterproofing material (800) is applied to prevent this.
[0151] Although embodiments of the present invention have been described above, the spirit of the present invention is not limited by the embodiments presented in this specification. Those skilled in the art who understand the spirit of the present invention may easily propose other embodiments within the scope of the same spirit by adding, changing, deleting, or adding components, and such are also to be considered to fall within the scope of the spirit of the present invention. Explanation of the symbols
[0152] S10: Geothermal pipe installation method S100: CIP wall installation stage S110: Drilling stage S120: Network coupling step S130: Network insertion step S140: Pouring stage S200: Underground excavation and structural layout construction phase S300: Leaving layer formation stage S400: Heat exchange line installation step S500: Discharge / Suction Line Connection Step S600: Installation stage for moisture flow path S610: Absorbent material insertion step S620: Euro landfill stage S630: Moisture supply chain formation stage S700: Heat exchanger layer formation step S710: 1st pouring stage S720: 2nd pouring stage S800: Floor layer and floor wall formation stage S900: Basement floor and basement wall formation stage S1000: Floor layer waterproofing coating stage 10 : Ground 11 : hole 20 : Rebar mesh 40 : Water flow path 41 : Branching water flow path 40a: Porous vertical pipe 41a: Porous horizontal pipe 40b: Moisture absorbent material 43a: First connecting pin part 41b: Moisture absorbent material 43b: Second connecting pin part 42: Thermally conductive pin 44: Deformed pin part 100 : CIP wall 600 : Floor 110 : Concrete pile 610 : Floor wall BF : Foundation floor surface 700 : Basement floor 300 : Lean layer 710 : Basement wall 400 : Geothermal pipe 800 : Waterproofing material 401 : Vertical line 900 : Positioning device 402 : Connection line 910 : Vertical bar 401a : Wire 920 : Vertical pipe 404 : Lid 921 : Cutting blade 405 : Insulation material 922 : Bottom pipe 410 : Heat exchange line 923 : Through hole 411: 1st heat exchange line 930: Vertical cylinder 412 : 2nd heat exchange line 940 : Horizontal pipe 413 : Connection line 950 : Horizontal bar 4 : Output / Suction Line 951 : Connection Line 420 : Transmission line 960 : Spring 430 : Suction line 970 : Balloon 500 : Heat exchanger without reinforcement 980 : Longitudinal needle 510 : High thermal conductivity filler 520 : Plain concrete
Claims
Claim 1 The method comprises: a CIP wall installation step for continuously constructing concrete piles of the CIP method to prevent soil collapse due to earth pressure before underground excavation when constructing an underground structure; an underground excavation and frame placement construction step for performing frame placement work in stages while proceeding downward excavation to the foundation floor surface inside the CIP wall; a lean layer formation step for forming a lean layer by pouring lean concrete onto the foundation floor surface; a heat exchange line installation step for horizontally installing a heat exchange line on the upper part of the lean layer for heat exchange of the refrigerant of the geothermal tube; and a discharge / suction line connection step for connecting a discharge / suction line for moving the refrigerant of the geothermal tube to each end of the heat exchange line; wherein the CIP wall installation step includes: a drilling step for drilling a hole in the ground; a mesh joining step for joining the discharge / suction line to a rebar mesh; and a mesh insertion step for inserting the rebar mesh into the hole. The method comprises a pouring step of pouring concrete into the hole; wherein the discharge suction line comprises: a vertical line that is long in the vertical direction and is positioned on the centerline of the reinforcing mesh; and a connecting line that extends horizontally from the lower end of the vertical line and is connected to the heat exchange line; wherein in the mesh insertion step, a positioning device presses the end of the connecting line against the side of the hole, and the positioning device comprises: a vertical bar extending downward from the lower end of the discharge suction line; a vertical pipe having a cutting blade at the top and having the lower end of the vertical bar inserted so as to be movable in the vertical direction; a vertical cylinder coupled to the vertical bar and forming a space between the vertical bar and the vertical bar in which the cutting blade moves in the vertical direction; a horizontal pipe extending radially from the outer surface of the vertical cylinder; a horizontal bar inserted movably into the horizontal pipe and connected to the vertical bar by a connecting line; and a spring each provided inside the horizontal pipe and pressing the horizontal bar toward the side of the hole.A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure, comprising: in the mesh insertion step, when the vertical pipe moves upward by the bottom surface of the hole and the cutting blade cuts the connecting line, the horizontal bar is pressed against the side of the hole by the spring. Claim 2 delete Claim 3 delete Claim 4 A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure, wherein the positioning device comprises: a balloon coupled to the bottom of the vertical pipe; and a vertical needle extending downward from the bottom of the vertical bar; wherein the vertical pipe forms a through hole through which the vertical needle moves toward the balloon, and when the vertical pipe moves upward by the bottom surface of the hole and the cutting blade cuts the connecting line, the vertical needle pops the balloon. Claim 5 A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure, wherein, in claim 1, the end of the connection line is covered by a lid, and the lid is removed during the discharge / suction line connection step. Claim 6 The method comprises: a CIP wall installation step for continuously constructing concrete piles of the CIP method to prevent soil collapse due to earth pressure before underground excavation when constructing an underground structure; an underground excavation and frame placement construction step for performing frame placement work in stages while proceeding downward excavation to the foundation floor surface inside the CIP wall; a lean layer formation step for forming a lean layer by pouring lean concrete onto the foundation floor surface; a heat exchange line installation step for horizontally installing a heat exchange line on the upper part of the lean layer for heat exchange of the refrigerant of the geothermal tube; and a discharge / suction line connection step for connecting a discharge / suction line for moving the refrigerant of the geothermal tube to each end of the heat exchange line; wherein the CIP wall installation step includes: a drilling step for drilling a hole in the ground; a mesh joining step for joining the discharge / suction line to a rebar mesh; and a mesh insertion step for inserting the rebar mesh into the hole. A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure, comprising a pouring step of pouring concrete into the hole; wherein the outer surface of the discharge suction line is covered with an insulating material. Claim 7 A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure, comprising: a water channel installation step in which a water channel including a porous vertical pipe is installed in the empty space between the concrete piles in claim 1. Claim 8 A method for constructing an integrated geothermal pipe in the bottom layer of an underground structure, wherein, in claim 7, the upper portion of the above-mentioned moisture channel is adjacent to the surface where the above-mentioned heat exchange line is installed. Claim 9 In claim 7, the water channel installation step comprises: an absorbent material insertion step of inserting a water absorbent material into the porous vertical pipe; a channel burial step of burying the lower part of the water channel below the waste layer; and a water supply network formation step of connecting a branched water channel branched toward the heat exchange line to the upper part of the water channel so that the water channel forms a shape extending toward the heat exchange line. Claim 10 A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure, further comprising, in claim 9, a step of forming a heat exchange unreinforced layer by pouring unreinforced concrete on the upper surface of the waste layer so that the heat exchange line and the branch moisture channel are buried. Claim 11 A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure, wherein the step of forming the heat exchange unreinforced layer comprises: a first pouring step of pouring a high thermal conductivity filler onto the surface of the branched water flow path; and a second pouring step of pouring unreinforced concrete onto the upper surface of the base layer. Claim 12 A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure that effectively removes moisture, wherein the heat exchange line comprises: a first heat exchange line that is long in one direction; a second heat exchange line parallel to the first heat exchange line; and a connecting line that connects the first heat exchange line and the second heat exchange line, and the end of the branched moisture flow path is in close contact with the connecting line. Claim 13 In claim 9, the heat exchange line comprises: a first heat exchange line that is long in one direction; and a second heat exchange line that is connected to the first heat exchange line and parallel to the first heat exchange line; and the branched water flow path extends between the first heat exchange line and the second heat exchange line, thereby effectively removing moisture. Claim 14 A method for constructing an integrated geothermal pipe for the bottom layer of an underground structure that effectively removes moisture, comprising: a heat-conducting pin connecting the first heat exchange line, the branch moisture flow path, and the second heat exchange line in sequence, as described in claim 13. Claim 15 In claim 14, the thermal conductive fin comprises: a first connecting fin portion connected to the first heat exchange line; a second connecting fin portion connected to the branched moisture flow path; and a deformable fin portion connecting the first connecting fin portion and the second connecting fin portion and elastically deforming according to the distance between the first connecting fin portion and the second connecting fin portion; a method for constructing an integrated geothermal pipe for the bottom layer of an underground structure that effectively removes moisture.