KR102270977B1 - screw pile assembly for damp ground - Google Patents

Abstract

The frame assembly for soft ground of the photovoltaic device according to the present invention is for supporting the photovoltaic module support 200 installed on the soft ground 100, and the pile support base located on the surface layer of the soft ground 100 The unit 20, the main pile 40 supported by the pile support base unit 20 and inserted vertically into the soft ground 100, and the pile support base unit 20 supported by the soft ground 100 At least a plurality of sub-piles 50 intersecting the main pile 40, and the mortar injection formed in the main pile 40 and the sub-pile 50 through the main pile 40 and the sub-pile 50 It has a subsidence prevention bulb part 70 formed in the soft ground 100 of the part of the mail pile by the part.

Description

Frame assembly for soft ground of photovoltaic device {screw pile assembly for damp ground}

The present invention relates to a frame device for a photovoltaic device, and more particularly, to a frame assembly for a soft ground for supporting a photovoltaic module by being installed on a soft ground such as a reclaimed land or an abandoned salt farm.

In general, when a building or structure is erected, the foundation work to reinforce the ground is performed to support the structure above it according to the conditions of the ground or the load of the structure. For example, if the ground in contact with the structure, such as hard ground, has sufficient rigidity (supporting power) to support it, the foundation work can be performed directly on it, but if it is not, the subsidence of the superstructure In order to prevent this, a designated construction to drive piles or improve the ground is carried out. And after reinforcing this ground, the foundation work is performed on it. At this time, the piles constructed on the soft ground are divided into steel pipe piles, PC piles, PHC piles, etc. according to the material, and divided into steel pipe piles, tubular piles, H-beam piles, etc. according to the shape and use.

In particular, when installing a solar power generator on a soft ground such as a closed salt farm, since the closed salt farm is based on huge mud, the frame assembly for installing the solar power module has a problem in that the column is relatively easily settled.

In consideration of this point, Korean Patent Registration No. 10-1401730 discloses a method for reinforcing bearing capacity of soft ground and a reinforcing structure used therefor.

The posted reinforcement structure digs a hemispherical pit at regular intervals in the surface layer of the soft ground, inserts a heaving prevention member based on the center of the hemispherical pit, and then pours discarded concrete into the soft ground in which the heaving prevention member is embedded. It relates to a reinforcing structure used in a method of reinforcing the bearing capacity of a soft ground, wherein the heaving preventing member is composed of a reinforcing bar or a steel bar, and the heaving preventing member is inserted into the pit and arranged at regular intervals; It surrounds the vertical member from the outside of the vertical member and includes a plurality of horizontal members bound to the vertical member.

Japanese Patent No. 06370640 and Japanese Patent No. 6166908 disclose a support for a solar cell panel pedestal, and Japanese Patent Application Laid-Open No. 2018-023213 discloses a support for a solar panel installation pedestal.

The support for the pedestal of the solar cell panel includes a pair of wing members, and the pair of wing members have a structure installed so as to be orthogonal to another set of wing members axially adjacent to the lower holding member.

And Korean Patent Laid-Open No. 2004-004961 discloses a basic file equipped with a screw. The posted screw-equipped foundation pile is installed so that a plurality of screws are spaced apart by a coupling means on the outer circumferential surface of the pile body on the pipe, and has a configuration formed with a gradually larger diameter in the upward direction.

In addition, Korean Patent Registration No. 0910884 discloses a multi-stage cone foundation, and Korean Patent Publication No. 2013-0128778 discloses a grouting reinforcement spiral steel pipe pile.

The posted steel pipe pile is formed of a steel pipe pile having a cylindrical pipe shape with a sharp tip so that drilling can be installed, and at least one spaced apart at a predetermined interval on the lower end of the steel pipe pile, and by rotating the ground A spiral blade penetrating the steel pipe pile while disturbing it, is formed through the outer peripheral surface of the steel pipe pile, is formed at the immediately rear end of the end with respect to the rotation direction of the spiral blade, and is disturbed along the rotation path of the spiral blade and a first grouting spout for spouting the grouting into the void portion of the .

The conventional pile constructed as described above has a problem in that it is easily submerged because of its weak bearing capacity during construction on a soft ground.

In particular, when constructing a photovoltaic structure on a soft ground, the vertical support structure has weak pull-out resistance, and when the soft ground subsides, the structure becomes unbalanced due to the height deviation of the ground, and the photovoltaic power module is distorted, resulting in reduced power generation efficiency. There is a problem of degradation.

In addition, when the soft ground partially subsides, it is difficult to adjust the height of the photovoltaic module, and the pile constructed on the soft ground has a weakened bearing capacity due to salt, moisture, etc. of the soft ground, so it cannot withstand wind pressure, etc. There is a problem that it is damaged. .

Support file is posted in Korean Patent Registration No. 1348237. The posted support file includes a pile body provided in a tubular shape of a predetermined diameter with a cavity formed therein; a support column provided at the lower end of the pile body in the shape of a tube or column having a smaller diameter than the pile body to ensure a wide space between the inner circumferential surface of the excavation hole during construction; And it is provided in a screw shape on the outer peripheral surface of the support column to improve the adhesion of the support column to the ground, and when viewed from a plane during construction, the entire or part is located in the area between the outer peripheral surface of the support column and the outer peripheral surface of the pile body a rotary wing unit; and fastening means for fastening or separating the support post and the pile body between the lower end of the pile body and the upper end of the support post.

The conventional support pile as described above has a rotary blade part installed at the end of the support column, and the construction of the pile is relatively easy, but in the case of soft ground, there is a problem in that the pile is settled by the load or its own weight. In particular, there is a problem that the subsidence of the pile cannot be partially prevented because it does not have a structure linked to each other. Such a support file has a problem in that it is difficult to transport because the diameter of the rotary blade part is large.

Republic of Korea Patent Publication No. 2004-004961 Republic of Korea Patent No. 0910884 Republic of Korea Patent Publication No. 2013-0128778 Republic of Korea Patent No. 10-1563159

An object of the present invention is to provide a frame assembly for a soft ground of a photovoltaic device that can prevent subsidence of a pile installed on a soft ground in consideration of the above-described problems, and can promote structural stability.

Another object of the present invention is to provide a frame assembly for a soft ground of a photovoltaic device that is easy to connect the diameter of the subsidence prevention member and the pile, and in particular, can increase the bearing capacity when installed on soft ground such as salt fields and mud.

The frame assembly for soft ground of the photovoltaic device of the present invention for achieving the above object is for supporting the photovoltaic module support installed on the soft ground, and a pile support base unit located on the surface layer of the soft ground, and the A main pile supported by the pile support base unit and vertically driven into the soft ground, at least a plurality of sub piles supported by the pile support base unit and intersecting the main pile in the soft ground, and the main pile and the sub pile It is characterized in that it has an anti-settling bulb formed in the soft ground of the main pile by the mortar injection part formed in the main pile and the sub pile through it.

In the present invention, it is provided with an anti-settling cone portion formed on the upper portion of the intersection of the sub-pile installed so as to intersect the main pile.

The mortar injection unit communicates with the hollow part of the main pile, and a plurality of first discharge holes are formed in the main pile of the part embedded in the soft ground, and communicates with the hollow part of the sub pile and is in communication with the sub-pile of the area corresponding to the part embedded in the soft ground. A second discharge hole is formed in the pile.

The main pile and the sub-pile are provided with a main core pipe and a sub-core pipe for preventing the soil of the soft ground from flowing into the main pile and the sub-pile during the construction of the pile.

The frame assembly for soft ground of the photovoltaic device according to the present invention is for installing a photovoltaic power module in soft ground such as a closed salt farm or a seashore, and increases the cross-sectional area of the main pile and the sub pile installed in the soft ground. It is possible to prevent subsidence by increasing the area occupied by the ground.

And it is possible to prevent the photovoltaic module from being tilted due to uneven settlement of the main piles supporting the photovoltaic modules when the photovoltaic device is installed.

In addition, since the frame assembly for the soft ground of the photovoltaic device according to the present invention is protected from salt and moisture since the main pile and the sub-pile are surrounded by mortar, it can be prevented from being weakened by corrosion.

1 is a side view of a photovoltaic device applied to a frame assembly for soft ground of a photovoltaic device according to the present invention;
Figure 2 is a partially cut-away side sectional view showing a state in which the frame assembly for soft ground of the photovoltaic device according to the present invention is installed in the ground.
3 is an exploded perspective view showing the fixing unit of the frame assembly for soft ground of the photovoltaic device according to the present invention;
4 is a perspective view of a frame assembly for a soft ground of a photovoltaic device according to the present invention;
5 is a perspective view showing another embodiment of a frame assembly for soft ground of a photovoltaic device according to the present invention;
6 is a perspective view showing a state in which the frame assembly for soft ground of the photovoltaic device according to the present invention is installed on the soft ground;
7 is a cross-sectional view showing another embodiment of the frame assembly for the soft ground of the photovoltaic device according to the present invention.

The frame assembly for the soft ground of the photovoltaic device according to the present invention is constructed on the soft ground to support the structure in which the photovoltaic modules are installed, one embodiment of which is shown in FIGS. 1 to 3 .

Referring to the drawings, the frame assembly 10 for the soft ground of the photovoltaic device according to the present invention is for supporting the photovoltaic module support 200 installed on the soft ground 100, and the soft ground 100 A pile support base unit 20 positioned on the surface of the, and a main pile 40 that is supported by the pile support base unit 20 and is vertically driven into the soft ground 100, and the pile support base unit 20 It is supported and provided with at least a plurality of sub-piles 50 intersecting the main pile 40 in the soft ground 100 .

And the anti-settling bulb part formed in the soft ground 100 of the part of the mail pile by the mortar injection part formed in the main pile 40 and the sub pile 50 through the main pile 40 and the sub pile 50 (70) is provided.

The frame assembly for soft ground of the photovoltaic device according to the present invention configured as described above will be described in detail for each component as follows.

The pile support base unit 20 of the frame assembly 10 for soft ground of the photovoltaic device according to the present invention is a base plate on which the main pile guide part 21 for guiding the main pile 40 is installed vertically. (22) and a sub-plate (23) supported on the edge of the base plate (22) and installed at a predetermined inclination angle with respect to the base plate (22). The sub-plate 23 may have a structure coupled to the base plate 22 by a position fixing unit 58 . And the sub-plate 23 is provided with sub-pile guide parts 24 for supporting the sub-pile 50 so as to cross the vane pile 40 . The main pile guide part 21 may be made of a tubular member having a relatively larger diameter than the outer diameter of the main pile 40 , and the sub pile guide part 24 is relatively larger than the outer diameter of the sub pile 50 . It may be made of a tubular member having a large diameter. The main pile 40 and the sub pile 50 may not be made of a circular pipe but may be made of a section steel having a predetermined shape, and the main pile guide part 21 and the sub pile guide part 24 are It is not limited by the embodiment, and may be formed of through-holes respectively formed in the main plate 22 and the sub-plate 23 .

On the other hand, the base plate 21 is coupled to the main post support unit 60 in which the main post 201 for supporting the photovoltaic module support 200 is installed. The main post support part 60 is provided with a main post support member 61 installed on the base plate 22, and the height of the main post support member 61 can be adjusted by combining the height of the main post 201. A height adjustment unit 62 is further provided so that the

The height adjustment unit 62 is formed with a plurality of first coupling holes 62a having a predetermined interval in the longitudinal direction in the main pillar support member 61, and the plurality of first coupling holes 62a are formed in the main pillar 201 coupled thereto. Two coupling holes (62b) are formed, and the first and second coupling holes (62a, 62b) have a structure coupled by a fastening member (62c) penetrating them. The fastening member 62c may be formed of a bolt and a nut penetrating the main pillar support member 61 and the main pillar 200 .

The main pile 40 guided along the main pile guide part 21 and driven into the soft ground 100 and the sub pile 50 guided by the sub pile guide part 24 and driven into the soft ground 100 are It may be made of a round tube or a square tube each having a hollow part. In addition, in the main pile 40 and the sub pile 50, a first discharge hole 42 and a second discharge hole 52 are formed in communication with the hollow part in the longitudinal direction to discharge mortar to be described later, respectively. The first discharge hole 42 is preferably formed over the entire outer peripheral surface of the main pile (40). The construction of the main pile 40 to the main pile guide part 21 and the sub pile 50 to the sub pile guide part 24 may be constructed as follows.

First, in order to construct the main pile 40, as shown in FIG. 3, it is inserted into the hollow part 41 of the main pile 40, and the inner diameter of the main pile 40 and the substantially small core main pipe 45 are inserted. do. The lower end of the core main pipe 45 protrudes from the end of the main pile 40 and has a sharp structure.

After inserting the main pile 40 into the main pile part 21 in the state in which the core main pipe 45 is inserted into the main pile 40 as described above, pressurizing or hitting the main pile to the soft ground 100 The pile 40 is driven. At this time, since the core main pipe 45 is inserted in the main pile 40, the soil of the soft ground 100 through the hollow part 41 and the first discharge hole 42. can be prevented from entering.

After inserting the core sub pipe 55 into the sub pile 50 in the same manner as the main pile 40, the sub pile 50 is inserted into the sub pile guide part 24, and then the main pile is pressed or struck. put it on

On the other hand, the subsidence prevention bulb part 70 changes the cross-sectional area of the main pile 40 and the sub pile 50 to further prevent subsidence in the soft ground, and the main pile 40 and the sub pile 50 are salted or It has a structure to protect it from moisture.

The anti-settling bulb part 70 is formed in the main pile 40 and the sub pile 50 through the main pile 40 and the sub pile 50 by the mortar injection part (the upper end of the hollow part can be used). The mortar injected into the mail pile 40 and the sub pile 50 is discharged while press-fitting the soft ground 100 through the first and second discharge holes 42 and 52, so that the main pile 40 and the sub pile are discharged. It is formed around 50.

The mortar for forming the anti-settling bulb part 70 may be made by mixing sand, cement, steelmaking slag, and the like. However, the mortar is not limited by this structure.

The mortar injection part for forming the anti-settling bulb part 70 may include a mortar pump for pumping the mixed mortar and a mortar supply pipe connecting the mortar pump and the main pile 40 or sub pile 50 .

However, the present invention is not limited thereto, and in order to form the anti-settling bulb part 70 around the main pile 40 and the sub pile 50, the main core pipe 45 is separated from the main pile 40, and the main After injecting mortar into the pile 40, press-fit into the main pile 40 using the main core pipe 45 so that the injected mortar is discharged through the first discharge hole 42, and as described above In the same way, the mortar injected into the server pile 50 is discharged through the second discharge hole 52 of the sub pile 50 .

As described above, the size of the first and second discharge holes 42 and 52 may be different depending on the location, and the formed density may also be different. Therefore, by adjusting the amount of mortar discharged through the first and second discharge holes 42 and 52, the size of the anti-settling bulb portion 70 can be adjusted.

As shown in FIG. 5 , the base plate 22 is formed in the shape of a square plate, four sub-plates 23 are installed in all directions, and the main pile guide part 21 and each sub-plate 23 are formed on the base plate 22 . The main pile 40 and the sub piles 50 may be installed in the sub plate guide part 24 .

On the other hand, the upper side where the main pile 40 and the sub pile 40 intersect is soft ground in the area of the inverted triangle shape partitioned by the sub piles 40 as shown in FIGS. 2 and 3 and 7 . The soil is removed, and the settlement prevention cone part 80 formed by filling the removed space with mortar may be formed. The anti-settling cone portion 80 may be formed integrally with the anti-settling bulb portion 70 .

And the sub-plate 23 supported by the base plate 22 moves and fixes the sub-plate 23 in the radial direction with respect to the base plate 22, so that the sub-pile 50 is formed with respect to the main pile 40. A position fixing unit 58 may be provided to increase the area occupied by the soft ground 100 surface.

The position fixing part 58 forms a long hole in a region corresponding to each other of the base plate 22 and the sub plate 23, and a fastening member for coupling the base plate 22 and the sub plate 23 through the long hole. to provide The fastening member may be formed of a bolt and a nut.

However, the present invention is not limited thereto, and a guide rail may be installed on the sub-plate 23 , and the guide rail may have a structure capable of sliding and positioning with respect to the base plate 22 . To this end, a support member for supporting the guide rail may be installed on the base plate 23 .

The operation of the frame assembly for the soft ground of the photovoltaic device according to the present invention configured as described above will be described as follows.

The frame assembly for the soft ground of the photovoltaic device according to the present invention has a pile support base unit 20 installed on the soft ground 100 as shown in FIGS. 1 to 2, 3 and 6, and the pile support The main pile 40 is vertically installed in the main pile guide part 21 of the base unit 20, and the sub pile 23 is installed in the sub pile guide part 24 of the sub plate 23 by the main pile ( 40), since it is supported so as to be crossed inside the soft ground 100, it is possible to increase the supporting force of the frame assembly 10 for the soft ground 100.

To explain this in more detail, since the sub-pile 50 is supported in a crossed state in the soft ground with respect to the main pile 40, the support area for the load and the pulling force can be widened. In particular, since the anti-settling bulb 70 is formed around the outer peripheral surfaces of the main pile 40 and the sub-pile 50, the pull-out force can be reduced by relatively increasing the load, and the settling resistance of the frame assembly can be increased. can In addition, since the main pile 40 and the sub pile 50 are surrounded by the anti-settling bulb part 70 made of mortar, it is possible to prevent corrosion from salt and moisture.

The frame assembly for the weak ground of the photovoltaic device is supported by the main guide part 21 in which the main pile 40 is vertically installed on the base plate 22, and the sub pile 50 is the sub plate 23. Since it is supported by the sub-pile guide part 24 that is installed obliquely to the , it is possible to maintain the posture of the main pile and the sub-pile.

And the sub-pile 40 intersected by the main pile 40 and the main pile 40 directly below the pile base support unit 20 has an inverted triangular anti-settling cone part 80 in the area partitioned by the sub pile 40 . Since it is formed, it is possible to prevent lateral behavior and consolidation settlement of the frame assembly according to the present invention.

The frame assembly for soft ground of the photovoltaic device according to the present invention configured as described above can prevent subsidence when installed on soft ground, such as a salt electric lamp, and thus enables the installation of a photovoltaic module, and the sunlight caused by subsidence It is possible to prevent distortion of the power generation module and improve the durability of the structure of the photovoltaic device.

Although the present invention has been described with reference to the embodiment shown in the drawings, this is only exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

The frame assembly for soft ground of the photovoltaic device according to the present invention is widely applicable to various foundation works such as ground and soft ground and civil works.

10; Frame assembly of photovoltaic device
20; Pile support base unit 40; main pile
50: sub file

Claims (4)

A base plate 22 that supports the solar power module support 200 installed in the soft ground 100, and is located on the surface layer of the soft ground 100, and the main pile guide part 21 is vertically installed; A pile support base unit 20 supported on the edge of the base plate 22 and installed at a predetermined inclination angle with respect to the base plate 22 and having a sub plate 23 having a sub pile guide part 24;
A position in which the sub-plate 23 is moved and fixed in the radial direction with respect to the base plate 22 so that the occupied area of the surface of the soft ground 100 by the sub-pile 50 with respect to the main pile 40 can be widened. a fixing part 58;
The main pile 40 that is supported by the main pile guide part 21 of the pile support base unit 20 and is vertically driven into the soft ground 100, and the sub pile guide part 24 of the sub plate 23. A plurality of sub-piles 50 that are supported and intersect the main pile 40, and the mortar injection formed in the main pile 40 and the sub-pile 50 through the main pile 40 and the sub-pile 50 Settling prevention formed on the upper portion of the intersection of the sub-pile 50 installed so as to intersect the main pile 40 and the sub-pile 50, which is formed in the soft ground 100 of the mail pile by the part. A cone part 80 is provided,
The mortar injection part communicates with the hollow part of the main pile, and a plurality of first discharge holes 42 are formed in the main pile at the part embedded in the soft ground, and communicates with the hollow part of the sub pile 50 and is embedded in the soft ground. A frame assembly for soft ground of a photovoltaic device, characterized in that the second discharge hole (52) is formed in the sub-pile (50) of the region corresponding to the region. delete delete The method of claim 1,
The main pile 40 and the sub-pile 50 are the main core pipe 45 and sub-sub to prevent the soil of the soft ground from flowing into the main pile 40 and the sub-pile 50 during the construction of the pile. A frame assembly for a soft ground of a photovoltaic device, characterized in that it is provided with a core tube (55).

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