Foundation pile

Abstract

A foundation pile (1) is disclosed. This foundation pile (1) comprises: a central shaft member (10) vertically extending in the vertical direction; a base plate (11) formed on the upper end of the central shaft member (10) to fix an upper structure (2) at the upper end thereof; and a circumferential member (20) provided on the upper circumference of the central shaft member (10) to reinforce the upper circumference of the central shaft member (10), wherein the upper surface of the circumferential member (20) is formed to be in contact with the lower surface of the base plate (11) without a gap.

Description

Basic file

[0001] The present invention relates to a foundation pile that firmly supports a structure that is driven into the ground and connected to an upper portion.

[0002]

[0003] Generally, when installing various structures, including signs and traffic light poles, a method is used in which foundation piles are driven into the ground and the structure is fixed on top of the foundation piles.

[0004]

[0005] A typical foundation pile is composed of a tubular shape extending vertically in the vertical direction, and has a base plate (or flange portion) at the top for connecting the superstructure. The base plate is buried and fixed in the ground so that it protrudes slightly upward from the ground.

[0006]

[0007] However, since these foundation piles do not have sufficient strength against lateral external forces, when lateral wind pressure or vibration is applied to the structure fixed on the upper side, the upper part of the foundation pile moves laterally together with the structure, thereby weakening the bearing capacity of the foundation pile, and as a result, a problem occurs in which it is difficult to firmly support the structure.

[0008]

[0009] In particular, when the top of a foundation pile is repeatedly and strongly lateralized, the entire pile is pulled upward, further weakening its bearing capacity. This problem occurs not only in the aforementioned signposts and traffic light columns, but also in foundation piles used to support all types of structures.

[0010]

[0011] The applicant of the present invention, which can solve these problems, has developed a foundation pile including a central axis member having a base plate (or flange portion) at the top for fixing a structure, and a peripheral member provided at the peripheral portion of a central pipe to reinforce the upper peripheral portion of the central axis member. The prior foundation pile technology is disclosed in registered patent no. 10-1909396.

[0012]

[0013] However, in the prior art, as shown in Fig. 1, since the base plate (11) must be attached only to one pipe forming the central axis, i.e., the central axis member (10), to support the upper structure (2) coupled to the base plate (11), the neck portion (N) between the base plate (11) and the peripheral member (20) is bound to be weak due to the small cross-sectional area, and therefore, there is a problem in that it becomes vulnerable to the entire horizontal load or vertical load.

[0014]

[0015] The problem to be solved by the present invention is to provide a foundation pile having excellent strength and durability against vertical loads, horizontal loads, and / or other various loads.

[0016]

[0017] A foundation pile (1) according to one aspect of the present invention comprises: a central axis member (10) extending vertically in the vertical direction; a base plate (11) formed on the upper end of the central axis member (10) to secure an upper structure (2) thereto; and a perimeter member (20) provided on the upper perimeter of the central axis member (10) to reinforce the upper perimeter of the central axis member (10), and the upper surface of the perimeter member (20) is formed to contact the lower surface of the base plate (11) without a gap.

[0018]

[0019] It further includes a plurality of reinforcing wings joined to the central axis member (10) and the peripheral member (20), and the plurality of reinforcing wings include at least one lower reinforcing wing (41) joined to the lower end of the central axis member (10), a plurality of intermediate reinforcing wings (42) joined to the outer periphery of the central axis member (10), and a plurality of upper reinforcing wings (43 or 43A, 43B, 43C) joined to the outer periphery of the peripheral member (20).

[0020]

[0021] It further includes an intermediate expansion reinforcing plate (50) that is joined to the outer surface of the circumferential member (20) so as to be spaced apart from the base plate (11) and has a larger area than the base plate (11) and resists vertical load, and the foundation pile is installed by driving the intermediate expansion reinforcing plate (50) into contact with the ground in the pre-formed embedding hole (7) and then filling in the ground of the embedding hole (7) again.

[0022]

[0023] The above foundation pile (1) further includes a plurality of insert holes (52) formed in the intermediate expansion reinforcement plate (50), and a plurality of auxiliary foundation piles (70) inserted into the insert holes (52) and having their upper ends welded (or fixed by other methods) to the intermediate expansion reinforcement plate (50), and the auxiliary foundation pile (70) has a base portion (71) at the upper end welded to the intermediate expansion reinforcement plate (50), a shaft portion (72) vertically extending downward from the lower surface of the base portion (71), and a shaft portion (72) connected to the shaft portion (72) so as to surround the upper portion of the shaft portion (72) and having a smaller size than the base portion (71).

[0024] It includes a reinforcing circumference (73) having an inner diameter corresponding to the insert hole (52).

[0025]

[0026] The foundation pile according to the present invention eliminates the neck portion that was vulnerable to vertical loads and horizontal loads between the base plate and the neck portion by closely contacting (or joining) the base plate provided on the upper part of the central axis member and the neck portion provided on the upper perimeter of the central member, thereby solving the existing problem of the neck portion being deformed or bent by the vertical load or horizontal load.

[0027]

[0028] In addition, the present invention has excellent strength and durability against vertical loads, horizontal loads, and / or other various loads by means of a plurality of reinforcing wings provided on the outer periphery of the foundation pile, an intermediate expansion reinforcing plate, and / or an auxiliary foundation pile connected to the intermediate expansion reinforcing plate.

[0029]

[0030] Figure 1 is a drawing to explain the problems of the prior art.

[0031] Figures 2 to 4 are drawings for explaining a base file according to the first embodiment of the present invention.

[0032] Figures 5 and 6 are drawings for explaining a base file according to the second embodiment of the present invention.

[0033] Figures 7 and 8 are drawings for explaining a base file according to a third embodiment of the present invention.

[0034] Figure 9 is a drawing for explaining a base file according to the fourth embodiment of the present invention.

[0035] Figures 10 and 11 are drawings for explaining a base file according to the fifth embodiment of the present invention.

[0036] Figures 12 to 14 are drawings for explaining a base file according to the sixth embodiment of the present invention.

[0037] Figure 15 is a drawing showing a modified example of Figure 6.

[0038]

[0039] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein.

[0040]

[0041] In describing the present invention, the size and shape of components shown in the drawings may be exaggerated or simplified for clarity and convenience of explanation.

[0042]

[0043] Additionally, terms specifically defined in consideration of the structure and operation of the present invention may vary depending on the intent or custom of the user or operator. These terms should be interpreted with meanings and concepts consistent with the technical spirit of the present invention, based on the contents of this specification.

[0044]

[0045] In order to clearly explain the present invention, the description of parts unrelated to the technical idea of ​​the present invention has been omitted, and the same reference numerals are used for identical or similar components throughout the specification.

[0046]

[0047] In addition, in various embodiments, components having the same configuration are described only in representative embodiments using the same symbols, and in other embodiments, only configurations different from the representative embodiments are described.

[0048]

[0049] Throughout this specification, when a part is said to be "connected" to another part, this includes not only being "directly connected," but also being "indirectly connected" with another member interposed therebetween, and not being fixedly connected to one another. Furthermore, when a part is said to "include" a component, this may mean that the other component is additionally included, rather than excluding it, unless otherwise specifically stated. Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0050]

[0051] Figures 2 to 4 are drawings for explaining a base file according to the first embodiment of the present invention.

[0052]

[0053] As shown in FIGS. 2 to 4, the foundation pile (1) according to the first embodiment of the present invention is installed to be buried below the ground and is configured to support a structure (2) fixed at the top.

[0054]

[0055] In addition, the foundation pile (1) according to the present embodiment includes a central axis member (10) that extends in the vertical direction and has a base plate (11) formed at the top for fixing the upper structure (2), and a multi-concentric type peripheral member (20) that is provided on the peripheral portion of the central axis member (10) to reinforce the upper peripheral portion of the central axis member (10).

[0056]

[0057] In this embodiment, the central axis member (10) is made of a metal pipe, but may also be made of a steel beam.

[0058]

[0059] The above base plate (11) is fixed by a base plate (2A) formed at the bottom of the upper structure (2) and a fastener (3) such as a bolt or anchor, thereby allowing the upper structure (2) to be supported in a fixed state on the foundation pile (1).

[0060]

[0061] Unlike the prior art in which the outer surface of the central axis member is exposed between the base plate and the perimeter member, thereby forming a neck portion vulnerable to vertical and horizontal loads, the foundation pile (1) according to the present embodiment is formed so that the upper surface of the perimeter member (20) is in contact with the lower surface of the base plate (11) without a gap, thereby eliminating the neck portion vulnerable to vertical and horizontal loads. At this time, the outer diameter of the base plate (11) is larger than the upper outer diameter of the perimeter member (20), and thereby the outer region of the base plate (11) is outside the upper outer edge of the perimeter member (20), and fixing holes (112) for fastening the fasteners (3) can be formed in the outer region of the base plate (11). The central axis member (10) can be welded to the center of the lower surface of the base plate (11), and the perimeter member (20) can be welded around it to form the foundation pile (1).

[0062]

[0063] According to one embodiment, the central axis member (10) may be a metal pipe extending vertically, and the base plate (11) may be a circular metal plate welded to the upper end of the central axis member (10) or may be used in various shapes depending on the base shape of the structure.

[0064]

[0065] The above base plate (11) is joined to the upper end of the central axis member (10), for example, by welding, and a plurality of fixing holes (112) through which bolts, which are part of the fasteners (3), pass may be formed in an outer region outside the upper outer edge of the peripheral member (20) described below. An upper structure (2) having a pillar shape is joined to the base plate (11) by the fasteners (3) including bolts and nuts passing through the holes formed in the lower base plate (2A) of the upper structure (2) and the fixing holes (112).

[0066]

[0067] In this embodiment, the peripheral member (20) is configured as a circular tube shape extending vertically and each having an inner diameter larger than the inner diameter of the central axis member (10), and includes a plurality of peripheral tube parts (21, 22, 23) arranged to form concentric circles of different inner diameters on the outside of the central axis member (10), and a plurality of fixed ribs (24) extending inwardly to connect between the plurality of peripheral tube parts (21, 22, 23), and having inner free ends joined to the outer surface of the central axis member (10).

[0068]

[0069] The above-described plurality of circumferential pipes (21, 22, 23) are configured to have the same upper height so as to be in contact with the lower surface of the base plate (11), and the circumferential pipes provided on the inner side have a longer length than the circumferential pipes provided on the outer side, so that the lower end of the circumferential pipes provided on the inner side extends further downward than the lower end of the circumferential pipes provided on the outer side, forming a multi-stage structure.

[0070]

[0071] With the lower end of the above-mentioned central axis member (10) in contact with the ground, a foundation pile (1) is driven into the ground using a hammer, a power hammer, a forklift, a pile driver, etc., so that the base plate (11) is exposed above the ground (GL). Preferably, the foundation pile (1) can be driven until the lower surface of the base plate (11), the upper end of the central axis member (10), and the upper end of the circumferential member (20) are substantially flush with the ground. After the foundation pile (1) is driven, the base plate (11)

[0072] It is necessary to partially excavate only a portion of the soil in the outer area to enable fastening of the fasteners (3) for fixing the upper structure (2). This can provide the additional effect of eliminating the vulnerable neck portion between the perimeter member (20) and the base plate (11) and allowing the base plate (11) to be supported directly on the ground.

[0073]

[0074] As mentioned above, the circumferential member (20) is configured as a circular tube shape extending vertically and each inner diameter is larger than the inner diameter of the central axis member (10), and includes a plurality of circumferential tube parts (21, 22, 23) arranged to form concentric circles of different inner diameters on the outer side of the central axis member (10), and a plurality of fixed ribs (24) extending inwardly to connect between the plurality of circumferential tube parts (21, 22, 24), and having inner free ends joined to the outer surface of the central axis member (10), and on the upper side, the plurality of circumferential tube parts (21, 22,

[0075] 23) The upper surface is on the same plane as the lower surface of the base plate (11), but the lower end of the inner circumferential pipe (21 or 22) extends further downward than the lower end of the outer circumferential pipe (22 or 23) on the lower side, forming a pointed shape that can be well driven into the ground. When the foundation pile (1) is embedded in the ground, the lower end of the central shaft member (10) is embedded in the ground first, and then the lower end of the inner circumferential pipe is sequentially embedded in the ground from the outer circumferential pipe, thereby pushing out the soil on the ground, so there is an advantage in that the foundation pile (1) can be effectively embedded in the ground.

[0076]

[0077] FIG. 5 and FIG. 6 are drawings for explaining a base file according to a second embodiment of the present invention.

[0078]

[0079] Referring to FIGS. 5 and 6, a foundation pile (1) according to a second embodiment of the present invention is installed to be buried below the ground, similar to the first embodiment, and is configured to support an upper structure (2) fixed to the upper end, and includes a central axis member (10) extending in a downward direction and having a base plate (11) formed at the upper end for fixing the upper structure (2), and a multi-axis type peripheral member provided on the peripheral portion of the central axis member (10) to reinforce the upper peripheral portion of the central axis member (10).

[0080]

[0081] As in the first embodiment above, the base plate (11) is fixed to the lower part of the upper structure (2) by a base plate (2A) formed thereon and a fastener such as a bolt or an anchor, thereby allowing the upper structure (2) to be supported in a fixed state on the foundation pile (1). In addition, as in the first embodiment above, the foundation pile (1) is formed so that the upper surface of the perimeter member (20, 20', 20") is in contact with the lower surface of the base plate (11), thereby eliminating a neck portion that is vulnerable to vertical loads and horizontal loads. At this time, the outer region of the base plate (11) is outside the upper outer edge of the perimeter member (20, 20', 20"), and fixing holes (112) for fastening the fasteners (3) can be formed in the outer region of the base plate (11). The central axis member (10) can be welded (or fixed by other methods) to the center of the lower surface of the base plate (11), and the peripheral member (20, 20', 20") can be welded around the central axis member (10) to form the foundation pile (1).

[0082]

[0083] In the present embodiment, the peripheral member (20, 20', 20") is composed of a plurality of peripheral tube parts (25) that are arranged and joined along the perimeter of the central axis member (10). The peripheral member (20, 20', 20") in the present embodiment is a multi-axial peripheral member, which is distinct from the multi-concentric circular peripheral member of the previous embodiment, since the plurality of peripheral tube parts (25) form a plurality of axes.

[0084]

[0085] At this time, it is preferable that the plurality of circumferential pipes (25) are directly connected to the central axis member (10), but they may also be connected to the central axis member (10) by means of ribs made of metal plates. The circumferential pipes (25) are configured in the shape of a circular tube extending vertically.

[0086]

[0087] At this time, the circumferential pipe portion (25) is composed of six pieces and can be arranged at a 60° angle to the circumferential surface of the central axis member (10). However, the number of circumferential pipe portions (25) does not limit the present invention.

[0088]

[0089] Figures 7 and 8 are drawings for explaining a base file according to a third embodiment of the present invention.

[0090]

[0091] Referring to FIGS. 7 and 8, a foundation pile (1) according to a third embodiment of the present invention is a foundation pile having a multi-concentric circumferential member (20) around a central shaft member (10), similar to the first embodiment, and in order to maximize the horizontal area of ​​the foundation pile and better withstand horizontal loads due to wind loads or earthquakes, the foundation pile includes a plurality of reinforcing wings (41, 42, 43A, 43B, 43C) joined (welded) around the circumference of the central shaft member (10) and / or a plurality of circumferential pipe parts (21, 22, 23) of the circumferential member, and the plurality of wings (41, 42, 43A, 43B, 43C) include one or more lower reinforcing wings (41) joined near the lower end of the central shaft member (10) and a plurality of intermediate reinforcing wings joined to the outer periphery of the central shaft member (10). It includes a wing (42) and a plurality of upper reinforcing wings (43A, 43B, 43C) joined to the outer periphery of the above-mentioned peripheral member (20). In this embodiment, the circumferential member (20) includes a first circumferential pipe part (21) having the largest outer diameter and the shortest downward extension length, a second circumferential pipe part (22) having an outer diameter greater than that of the first circumferential pipe part (21) and a lower extension length shorter than that of the first circumferential pipe part (21), and a third circumferential pipe part (23) having an outer diameter greater than that of the second circumferential pipe part (22) and a lower extension length shorter than that of the second circumferential pipe part (22), and the upper reinforcing wings (43A, 43B, 43) include a first upper reinforcing wing (43A) joined to the outer surface of the first circumferential pipe part (21), a second upper reinforcing wing (43B) joined to the outer surface of the second circumferential pipe part (22), and a third upper reinforcing wing joined to the outer surface of the third circumferential pipe part (23). Includes wings (43C).

[0092]

[0093] The above reinforcing wings (41, 42, 43A, 43B, 43C) may be formed of a steel plate (steel plate or shaped steel) having a sloped surface slanted downward toward the center of the foundation pile (1), and thus, the array of reinforcing wings at the same height forms a downward pointed shape so as to minimize resistance when driving the foundation pile (1) into the ground.

[0094]

[0095] Figure 9 is a drawing for explaining a base file according to the fourth embodiment of the present invention.

[0096]

[0097] Referring to FIG. 9, a foundation pile (1) according to a fourth embodiment of the present invention is a foundation pile having a multi-axial perimeter member (20, 20', 20") including a plurality of perimeter pipe parts (25) arranged in a circular shape around a central axis member (10), and in order to maximize the horizontal area of ​​the foundation pile and better withstand horizontal loads due to wind loads or earthquakes, the foundation pile includes a plurality of reinforcing wings (41, 42, 43) joined (welded) to the perimeter of the central axis member (10) and the perimeter member (20), and the plurality of wings (41, 42, 43) include one or more lower reinforcing wings (41) joined near the lower end of the central axis member (10), a plurality of intermediate reinforcing wings (42) joined to the outer perimeter of the central axis member (10), and a plurality of intermediate reinforcing wings (42) joined to the outer perimeter of the perimeter member (20, 20', 20"). It includes a plurality of upper reinforcing wings (43) joined one by one to each of the circumferential pipes (25). The remaining configuration is substantially the same as the previous embodiment, so its description is omitted.

[0098]

[0099] Figures 10 and 11 are drawings for explaining a base file according to the fifth embodiment of the present invention.

[0100]

[0101] Referring to FIGS. 10 and 11, a foundation pile (1) according to a fourth embodiment of the present invention is configured to better withstand a vertical load, and includes a central shaft member (10) that extends downward and has a circular base plate (11) formed at the upper end for fixing the upper structure (2), a peripheral member (20) that is provided on the peripheral portion of the central shaft member (10) to reinforce the upper peripheral portion of the central shaft member (10) and contacts the lower surface of the base plate (11) at the upper end, and a circular intermediate expansion reinforcing plate (50) that is formed by joining to the outer peripheral surface of the peripheral member (20) so as to be spaced apart from the base plate (11) downward and has a larger area than the base plate (11) to resist a vertical load.

[0102]

[0103] Such a foundation pile (1) can be installed on the ground by first digging the ground to create a landfill hole (7) with an area where an intermediate expansion reinforcement plate (50) can be placed, driving the foundation pile (1) into the ground in the landfill hole (7) until the intermediate expansion reinforcement plate (50) touches the ground, and then filling in the land in the landfill hole (7) again.

[0104]

[0105] In such a base pile (1), the central axis member (20) may be made of various shapes including circular, square or other cross-sectional shapes, such as pipes or H-beams, T-bars, etc., and the intermediate expansion reinforcing plate (50) may be made of a steel plate having a larger area than the base plate (11).

[0106]

[0107] Figures 12 to 14 are drawings for explaining a base file according to the sixth embodiment of the present invention.

[0108]

[0109] Referring to FIGS. 12 to 14, a foundation pile (1) according to a sixth embodiment of the present invention, like the fifth embodiment above, includes a central axis member (10) extending downward and having a base plate (11) formed at the upper end for fixing the upper structure (2), a peripheral member (20) provided on the peripheral portion of the central axis member (10) to reinforce the upper peripheral portion of the central axis member (10) and contacting the lower surface of the base plate (11) at the upper end, and an intermediate expansion reinforcing plate (50) formed by joining to the outer peripheral surface of the peripheral member (20) so as to be spaced apart from the base plate (11) downward and having a larger area than the base plate (11) to counteract a vertical load, and in addition, a plurality of insert holes (52) formed in the intermediate expansion reinforcing plate (50), and a base portion (71) at the upper end inserted into the insert holes (52) to be formed in the intermediate expansion reinforcing plate It includes a number of auxiliary foundation piles (70) welded to a reinforcing plate (50).

[0110]

[0111] The auxiliary foundation pile (70) includes a base portion (71), an axial portion (72) extending vertically downward from the lower surface of the base portion (71), and a reinforcing circumferential portion (73) that is connected to the axial portion (72) so as to surround the upper portion of the axial portion (72), has a smaller size than the base portion (71), and has an inner diameter corresponding to the insert hole (52).

[0112]

[0113] After the foundation pile (1) is driven into the ground until the intermediate expansion reinforcing plate (50) is in contact with the floor of the embedding hole (7), an auxiliary foundation pile (70) is inserted into each of the insert holes (52) and driven into the ground so that a reinforcing circumference (73) is formed in the insert hole (52), and the base portion (71) is almost in contact with the intermediate expansion reinforcing plate (50). Next, the base portion (71) is welded to the intermediate expansion reinforcing plate (50). Finally, the embedding hole (7) is filled with soil again.

[0114]

[0115] In this embodiment, the base plate (11) and the intermediate expansion reinforcing plate (50) are configured in a circular shape, but may be configured in a square, polygonal, or other geometric shape.

[0116]

[0117] Fig. 15 illustrates a modified embodiment of Fig. 6, which illustrates a multi-axis, multi-stage structure foundation pile, and illustrates a multi-axis, single-stage structure foundation pile. Referring to Fig. 15, the foundation pile is composed of a circumferential member (20) formed into a multi-axis, single-stage structure including a plurality of circumferential pipes (25) having the same height.

[0118]

[0119] The present invention is not limited to the above-described embodiments and can be implemented in various ways.

Claims

1. A central axis member (10) extending vertically in the vertical direction; A base plate (11) formed on the upper end of the central axis member (10) to secure the upper structure (2) on the upper end; and It includes a peripheral member (20) provided on the upper circumference of the central axis member (10) to reinforce the upper circumference of the central axis member (10). A foundation pile characterized in that the upper surface of the above-mentioned peripheral member (20) is formed to contact the lower surface of the above-mentioned base plate (11) without a gap.

2. In paragraph 1, It further includes a plurality of reinforcing wings joined to the central axis member (10) and the peripheral member (20). The above multiple reinforcing wings, One or more lower reinforcing wings (41) attached to the lower end of the above central axis member (10), A plurality of intermediate reinforcing wings (42) joined to the outer periphery of the above central axis member (10), A foundation pile characterized by including a plurality of upper reinforcing wings (43 or 43A, 43B, 43C) joined to the outer periphery of the above-mentioned peripheral member (20).

3. In paragraph 1, A foundation pile characterized in that it further includes an intermediate expansion reinforcing plate (50) that is joined to the outer surface of the peripheral member (20) so as to be spaced apart from the base plate (11) to the lower side and has a larger area than the base plate (11) and resists a vertical load, and that the foundation pile is installed in such a way that the intermediate expansion reinforcing plate (50) is driven in until it comes into contact with the ground in a pre-formed embedding hole (7), and then the ground in the embedding hole (7) is filled back in.

4. In paragraph 3, A plurality of insert holes (52) formed in the above intermediate expansion reinforcing plate (50), It further includes a number of auxiliary foundation piles (70) that are inserted into the above insert hole (52) and have their upper ends welded to the intermediate expansion reinforcing plate (50). The above auxiliary foundation pile (70) is a foundation pile characterized in that it includes an upper base portion (71) welded to the intermediate expansion reinforcing plate (50), an axial portion (72) extending vertically downward from the lower surface of the base portion (71), and a reinforcing circumferential portion (73) joined to the axial portion (72) so as to surround the upper portion of the axial portion (72), has a smaller size than the base portion (71), and has an inner diameter corresponding to the insert hole (52).

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