JP2024011525A - Type pile for hard and soft soil, trestle, and trestle system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile which is easily driven into not only a soft ground but also a hard ground, and can suppress settlement and falling in not only the hard ground but also the soft ground.

SOLUTION: A pile serving for hard and soft soil for fixing a structure to a ground includes a buried part screwed to the ground from the tip, and a column mounting part capable of mounting a column arranged on an end opposite to the tip, wherein the buried part has a spiral blade screwed to the ground on its outer peripheral surface, and the spiral blade includes a first spiral blade arranged on the tip side, a second spiral blade which is arranged on a side closer to the mounting part side than the first spiral blade and has a diameter larger than that of the first spiral blade, and a third spiral blade which is arranged on a side closer to the mounting part side than the second spiral blade and has a diameter larger than that of the second spiral blade.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a pile, a mount, and a mount system for both hard and soft geology, which can be used in both hard and soft geology.

Traditionally, piles have been used to secure structures to the ground, but the foundation pile method that uses screw piles (also called helical piles or spiral piles), in which screw blades are wound spirally around the outer circumference of a steel pipe, has begun to become popular. (Patent Document 1).

Furthermore, in order to install a solar panel on soft ground, a construction method has been proposed in which a continuous helical screw resistor driven into the ground for 1.5 m or more is used as a foundation member (Patent Document 2).

Japanese Patent Application Publication No. 2010-236344 Japanese Patent Application Publication No. 2015-127501

However, the hardness of the ground into which the piles are embedded varies depending on the location, and some ground is a complex mixture of hard and soft. For use in soft ground, measures must be taken to prevent piles from sinking and falling, and for use in hard ground, ease of pile penetration is important. Therefore, in the ground where hard and soft are mixed in a complex manner, it has been difficult to achieve both ease of rooting and suppression of subsidence and overturning. In addition, it was complicated to use different piles for hard and soft ground.

The present invention has been made in view of the above circumstances, and provides a pile that is easy to take root in not only soft ground but also hard ground, and is capable of suppressing subsidence and overturning not only in hard ground but also in soft ground. The purpose is to

The gist of the present invention is as follows.
(1) A pile for both hard and soft soil for fixing structures to the ground, which has a buried part that is screwed into the ground from the tip, and a column that can attach a support that is placed at the end opposite to the tip. Equipped with a mounting part,
The buried part has a spiral blade screwed into the ground on its outer peripheral surface,
The spiral blade is
a first spiral blade disposed on the tip side;
a second spiral blade arranged closer to the attachment part than the first spiral blade and having a larger diameter than the first spiral blade; and a second spiral blade arranged closer to the attachment part than the second spiral blade; a third helical vane having a larger diameter than the second helical vane;
A pile for both hard and soft soil.
(2) the first spiral blade has a diameter that is more than 1 times and 1.6 times or less the diameter of the main body of the buried portion;
The second spiral blade has a diameter that is 1.7 times or more and 2.7 times or less than the diameter of the main body of the buried part,
The third spiral blade has a diameter that is 2.8 times or more and 3.7 times or less than the diameter of the main body of the buried portion.
The pile for both hard and soft soil described in (1) above.
(3) the first spiral blade is arranged in a range of 0% or more and 65% or less of the total length of the buried portion with the tip as a base point;
The second spiral blade is arranged in a range of 54% or more and 75% or less of the total length of the buried portion, starting from the tip,
The third spiral blade is arranged in a range of 70% or more and 95% or less of the total length of the buried portion, starting from the tip.
The pile for both hard and soft terrain as described in (1) or (2) above.
(4) The number of spirals of the first spiral blade is 10 to 50 turns,
The number of spirals of the second spiral blade is one turn or more,
The number of spirals of the third spiral blade is one turn or more,
The pile for both hard and soft soils according to any one of (1) to (3) above.
(5) The pillar attachment part is
The column has an elongated shape extending from the center of the column attachment part toward the outer periphery, and has a plurality of holes arranged radially with respect to the center of the column attachment part, or has a plurality of holes that are concentric with the center of the column attachment part. having a plurality of holes having an arc shape;
The pile for both hard and soft soils according to any one of (1) to (4) above.
(6) The pile for both hard and soft terrain according to any one of (1) to (5) above,
A pedestal comprising: one pillar connected to the pillar attachment part,
The pillar has a main body and a pile attachment part that can be connected to the hard and soft earth pile at the end of the main body,
The hard and soft earth type pile and the pillar are connected by fixing the pillar attachment part and the pile attachment part to each other,
The pillar attachment part has a plurality of holes that are elongated from the center of the pillar attachment part toward the outer circumferential side and are arranged radially with respect to the center of the pillar attachment part, and the pile attachment part includes: It has a plurality of holes having a concentric arc shape with respect to the center of the pile attachment part, or
The pillar attachment part has a plurality of holes having a concentric arc shape with respect to the center of the pillar attachment part, and the pile attachment part has an elongated shape from the center of the pile attachment part toward an outer peripheral side. and having a plurality of holes arranged radially with respect to the center of the pile attachment part,
trestle.
(7) The pedestal according to (6), wherein the support column includes one or more reinforcing plates between the main body and the pile attachment part.
(8) a front support bar and a rear support bar longer than the front support bar;
a fastening member that connects the column to the front support bar and the rear support bar;
A longitudinal member connected to the front support bar, the column, and the rear support bar, the vertical member being located at a higher position from a connection point with the front support bar that is located at a lower position in a direction parallel to the column. a longitudinal member arranged at an angle toward the connection with the rear support bar;
further comprising: a cross member connected to the vertical member; and a clamp connected to the cross member,
The angle θ ₂ between the column and the rear support bar is the same as or larger than the angle θ ₁ between the column and the front support bar, and the center of gravity is closer to the rear support bar than the column _. The pedestal according to (6) or (7) above.
(9) The fastening member connects two or more holes for connecting to the support column with bolts, the hole having an elongated shape in a direction perpendicular to the longitudinal direction of the support support, and the front support bar. The frame according to (8) above, comprising a hole for connecting the rear support bar and a hole for connecting the rear support bar, the hole having an elongated shape in a direction parallel to the longitudinal direction of the support column.
(10) The above (8), wherein the angle θ ₁ between the column and the front support bar is 10 to 45 degrees, and the angle θ ₂ between the column and the rear support bar is 15 to 50 degrees. Or the frame described in (9).
(11) The frame according to any one of (8) to (10) above, wherein the angle of the vertical member with respect to the horizontal direction is greater than 0 degrees and less than 25 degrees.
(12) A mount system including a plurality of mounts according to any one of (8) to (11) above.
(13) The pedestal system according to (12) above, wherein the horizontal members of adjacent pedestals among the plurality of pedestals are connected via an extension member.
(14) The frame system according to (12) or (13) above, which is a carport.
(15) The mount system according to (14) above, wherein a solar panel is arranged on the ceiling of the carport.

According to the present invention, it is possible to provide a pile that can be easily embedded in not only soft ground but also hard ground, and that can suppress subsidence and fall not only in hard ground but also in soft ground.

FIG. 1 is a schematic side view of a pile for both hard and soft soils. FIG. 2 is a schematic front view of an example of a column attachment part when a pile for both hard and soft soils is viewed from the tip. FIG. 3 is a schematic side view of an example of a support. FIG. 4 is a schematic front view of an example of the pile attachment part when the support column is viewed from the longitudinal direction. FIG. 5 is a schematic external view illustrating an example of a manner in which the column attachment portion of the pile for both hard and soft soils and the pile attachment portion of the column are fastened with bolts. FIG. 6 is a schematic front view of an example of a fastening member. FIG. 7 is a schematic external view illustrating an example of a mode in which two holes in a support and two holes in a fastening member are aligned and a fastening member is connected to a support with a bolt. FIG. 8 is a schematic side view of an example of a pedestal including piles that can be used for both hard and soft soils. FIG. 9 is a schematic external view illustrating an example of a mode in which a fastening member is connected to a front support bar and a rear support bar, a front support bar is connected to a vertical member, and a column is connected to a vertical member, and An enlarged view (a) of an example of the connection between the fastening member and the front support bar surrounded by the broken line, (b) an enlarged view of an example of the connection between the front support bar and the vertical member surrounded by the broken line, and It is an enlarged view of an example of the connection aspect of the enclosed support|pillar and a vertical member. 10 and 9 are schematic external views showing an example of a pedestal system including a horizontal member connected to the vertical members of two mounts, and an enlarged view of an example of the connection between the vertical member and the horizontal member surrounded by broken lines. It is. FIG. 11 is a schematic external view showing an example of a solar panel held by a clamp on a horizontal member spanning two frames in FIG. 10, and two solar panels are held on a clamp connected to the horizontal member. FIG. 2 is an enlarged view of an example of an embodiment (the part surrounded by a broken line), and an enlarged view of an example of an embodiment (the part surrounded by a broken line) in which an end portion of a solar panel is held by a clamp connected to a cross member. FIG. 12 is a schematic front view of an example in which five solar panels are held using three frames. FIG. 13 is a schematic front view of a carport configured using four frames 100. FIG. 14 is a schematic side view of a carport configured using four frames 100. FIG. 15 is a schematic top view of a carport configured using four frames 100.

The present disclosure relates to a pile for both hard and soft ground for fixing a structure to the ground, which is capable of attaching a buried part that is screwed into the ground from the tip and a support that is placed at the end opposite to the tip. the buried part has a spiral blade screwed into the ground on its outer circumferential surface, and the spiral blade has a first spiral blade disposed on the tip side, a second helical blade which is also disposed on the mounting part side and has a larger diameter than the first helical vane; and a second helical vane which is disposed closer to the mounting part than the second helical vane and which is larger in diameter than the first helical vane. The target is a pile for both hard and soft soils that includes a third spiral blade with a large diameter.

The pile for both hard and soft soils (also referred to as the pile for both hard and soft soils) of the present disclosure has a relatively small diameter of the first spiral blade disposed on the tip side, so it can be used not only for soft ground but also for hard ground. Rooting can be done easily. This hard and soft soil type pile also has a second blade which is located closer to the attachment part than the first spiral blade and has a larger diameter than the first spiral blade, and a second blade which is located closer to the attachment part than the second spiral blade. Since the third spiral blade is arranged and has a larger diameter than the second spiral blade, it is possible to suppress subsidence and fall on soft ground. This pile can be used not only on soft ground but also on hard ground by having spiral blades with three different diameters from the tip side to the column attachment part, from the smallest diameter to the largest diameter. It is easy to take root in the ground, and it is possible to prevent settlement and overturning not only on hard ground but also on soft ground.

In addition, conventionally, in order to construct piles in soft ground, piles with relatively thick and large spiral blades are used, and in order to maintain verticality, it is necessary to dig holes in advance before inserting the roots. However, this pile for both hard and soft soils can be easily embedded as described above, so it does not require the advance work that is done in conventional pile construction. There is no need to dig holes or apply pressure from above. Therefore, there is no need to use heavy machinery to embed this pile for both hard and soft soils, and it can be easily installed using small tools such as hydraulic hand augers, making it possible to install even in narrow spaces where construction was previously impossible. Rooting is possible.

Figure 1 shows a schematic side view of an example of this pile for both hard and soft soils. This pile 1 for both hard and soft soils includes a first spiral blade 11 , a second spiral blade 12 , and a third spiral blade 13 on the surface of a buried portion 10 . The present pile 1 for use in both hard and soft soils is provided with a strut attachment portion 14 at the end of the buried portion 10 which is the connection portion with the strut.

The buried portion 10 is made of a metal cylinder and has a main body portion 101 having a constant diameter and a tip portion 102 having a tapered shape. The main body portion 101 of the buried portion 10 preferably has a diameter of 40 to 150 mm, more preferably 50 to 140 mm, even more preferably 60 to 130 mm, even more preferably 70 to 120 mm, and even more preferably 80 to 110 mm.

When the main body portion 101 has the above-mentioned preferred diameter, it can be embedded more easily. The buried portion 10 preferably has a length of 1 to 3 m, more preferably 1.2 to 2.6 m, and still more preferably 1.4 to 2.2 m. By having the buried portion 10 having the preferable length, it is possible to further improve the subsidence suppressing effect and the fall suppressing effect while substantially maintaining the ease of embedding.

The first spiral blade 11 is preferably more than 1 times and 1.6 times or less, more preferably 1.1 times or more and 1.5 times or less, and even more preferably 1.2 times the diameter of the main body 101 of the buried portion 10. The diameter is 1.4 times or less. The width of the first spiral blade 11 is, for example, 3 to 25 mm, 4 to 20 mm, or 10 to 15 mm.

The second spiral blade 12 preferably has a diameter of 1.7 times or more and 2.7 times or less, more preferably 1.8 times or more and 2.6 times or less, and even more preferably 1. It has a diameter of 9 times or more and 2.5 times or less. The width of the second spiral blade 12 is, for example, 30 to 74 mm, 40 to 67 mm, or 50 to 60 mm.

The third spiral blade 13 is preferably 2.8 times or more and 3.7 times or less, more preferably 2.9 times or more and 3.6 times or less, and even more preferably 3 times the diameter of the main body 101 of the buried portion 10. The diameter is 3.5 times or less. The diameter of the helical blade is the maximum diameter of the helical blade including the diameter of the buried portion 10. The width of the third spiral blade 13 is, for example, 80 to 120 mm, 85 to 110 mm, or 90 to 100 mm.

A first helical blade 11 , a second helical blade 12 having a larger diameter than the first helical blade 11 , and a third helical blade 13 having a larger diameter than the second helical blade 12 are located in the buried portion 10 . By having the above-mentioned preferable diameter with respect to the diameter of , it is possible to better achieve both ease of penetration of the hard and soft soil type pile 1 and prevention of settlement and overturning.

The first spiral blade 11 is arranged in a range of preferably 0% or more and 65% or less, more preferably 0% or more and 63% or less, and still more preferably 0% or more and 61% or less of the total length of the buried portion 10 with the tip as the base point. be done. The first spiral blade 11 is arranged within a range of, for example, 1160 mm, 1110 mm, or 1060 mm from the tip of the buried portion.

The second spiral blade is arranged in a range of preferably 54% or more and 75% or less, more preferably 57% or more and 70% or less, and still more preferably 60% or more and 65% or less of the total length of the buried portion 10 from the tip. Ru. The second spiral blade 12 is arranged within a range of, for example, 980 to 1300 mm, 1020 to 1230 mm, or 1080 to 1160 mm from the tip of the buried portion.

The third spiral blade is arranged in a range that is preferably 70% or more and 95% or less, more preferably 75% or more and 92% or less, and still more preferably 80% or more and 89% or less of the total length of the buried portion 10 from the tip. Ru. The third spiral blade 13 is arranged, for example, in a range of 1350 to 1650 mm, 1350 to 1600 mm, or 1450 to 1550 mm from the tip of the buried portion.

By arranging the first spiral blade, the second spiral blade, and the third spiral blade in the above-mentioned preferred range with respect to the entire length of the buried portion 10 of the pile 1 for both hard and soft earth, It is possible to better achieve both ease of embedding of type piles and prevention of subsidence and overturning.

The pitch of the first helical vane is preferably smaller than the pitch of each of the second helical vane and the third helical vane. The pitch of the first spiral blade is preferably 3 to 20 mm, more preferably 5 to 16 mm, and even more preferably 7 to 13 mm. The pitch of each of the second spiral blade and the third spiral blade is preferably 25 to 55 mm, more preferably 30 to 50 mm, and even more preferably 35 to 45 mm. By setting the pitch of the helical blades within the above-mentioned preferred range, it is possible to better achieve both ease of penetration of the hard and soft soil type pile 1 and prevention of settlement and overturning. The pitches of the second spiral blade and the third spiral blade may be the same or different, but are preferably the same.

The distance between the first helical blade 11 and the second helical blade 12 is preferably a distance greater than or equal to the pitch of the first helical blade 11 and less than or equal to three times the pitch of the first helical blade 11. The upper limit of the distance between the first helical blade 11 and the second helical blade 12 is more preferably twice the pitch of the first helical blade 11 or less, and even more preferably substantially equal to the pitch of the first helical blade 11. is the same as By setting the distance between the first spiral blade 11 and the second spiral blade 12 within the above-mentioned preferable distance range, the present pile 1 for both hard and soft soils can be easily embedded, and the settlement and overturning can be suppressed. It is possible to achieve both in a better manner.

Preferably, the number of helices of the first helical blade is 10 to 50 turns, the number of helices of the second helical blade is 1 or more turns, and the number of helices of the third helical blade is 1 or more turns. The first spiral vane preferably has a spiral number of 10 to 50 turns depending on the total length of the pile. The second spiral blade and the third spiral blade may each have one or more spirals, but if each has one spiral, it is sufficient to suppress subsidence and fall even on soft ground. Therefore, from the viewpoint of cost reduction, the number of spirals of each of the second spiral blade and the third spiral blade is preferably one turn.

Preferably, the strut mounting portion has a plurality of holes that are elongated from the center of the strut mounting portion toward the outer periphery and are arranged radially with respect to the center of the strut mounting portion, or It has a plurality of holes having arcuate shapes concentric with the center.

FIG. 2 shows a schematic front view of an example of the column attachment part 14 when the hard and soft earth type pile 1 is viewed from the tip. As illustrated in FIG. 2, the pillar attachment part 14 is a plate-shaped plate, preferably a disc-shaped plate, provided with a plurality of holes 15 for fastening the hard and soft earth type pile 1 and the pillar with bolts. Something can happen. As illustrated in FIG. 2, the plurality of holes 15 preferably have an elongated shape from the center of the column attachment part 14 toward the outer circumferential side, and are arranged radially with respect to the center of the column attachment part 14. The length of the hole 15 in the longitudinal direction is preferably 10 to 60 mm, more preferably 15 to 50 mm, and the length in the transverse direction is preferably 10 to 20 mm, more preferably 12 to 18 mm.

The buried part 10, the first spiral blade 11, the second spiral blade 12, the third spiral blade 13, the strut attachment part 14, and other arbitrary configurations of the pile 1 for both hard and soft earth are conventionally used in piles. It can be made of materials used in the industry, for example metal, and can be integrally molded or welded.

The present disclosure also provides a pedestal comprising the above-mentioned pile for both hard and soft earth and one strut connected to the strut attachment part, wherein the strut includes a main body part and an end of the main body part. a pile attachment part that can be connected to the pile for both hard and soft earth; the pile for both hard and soft earth and the column are connected by fixing the column attachment part and the pile attachment part to each other; The pillar attachment part has a plurality of holes that are elongated from the center of the pillar attachment part toward the outer circumferential side and are arranged radially with respect to the center of the pillar attachment part, and the pile attachment part includes: The pillar mounting part has a plurality of holes having a concentric arc shape with respect to the center of the pillar mounting part, or the pillar mounting part has a plurality of holes having a concentric arc shape with respect to the center of the pillar mounting part. However, the present invention is directed to a frame in which the pile attachment portion has an elongated shape extending from the center of the pile attachment portion toward the outer circumferential side and has a plurality of holes arranged radially with respect to the center of the pile attachment.

The hard and soft earth type pile 1 can be connected to a support. FIG. 3 shows a schematic side view of an example of the support. The struts 20 can be conventional struts, for example, C-shaped, square-shaped, or omega-shaped in cross-section perpendicular to the length direction. The struts 20 preferably have a diameter of 50 to 150 mm, preferably a length of 1000 to 2500 mm, more preferably 1500 to 2000 mm. The support column 20 may include a pile attachment part 24 at the end of the main body 22, which is the connection part with the hard and soft earth type pile 1.

FIG. 4 shows a schematic front view of an example of the pile attachment portion 24 when the support 20 is viewed from the longitudinal direction. As illustrated in FIG. 4, the pile attachment part 24 is a plate-shaped plate, preferably a disk-shaped plate, provided with a plurality of holes 25 for fastening the support column 20 and the pile 1 for both hard and soft soil with bolts. Something can happen. The plurality of holes 25 preferably have an arcuate shape concentric with the center of the pile attachment part 24, as illustrated in FIG. Each of the arc-shaped holes has a length that preferably spans an angle of 45 to 85 degrees, more preferably 50 to 80 degrees, and even more preferably 55 to 75 degrees with respect to the center of the pile attachment portion 24. Each of the arc-shaped holes has a length of, for example, 50 to 150 mm. The width of each of the arc-shaped holes in the outer circumferential direction (lateral direction) from the center of the pile attachment portion 24 is preferably 10 to 20 mm, more preferably 12 to 18 mm. Each of the arc-shaped holes may have the same diameter with respect to the center of the pile attachment portion 24, or may have different diameters.

The strut attachment portion 14 of the hard and soft earth type pile 1 and the pile attachment portion 24 of the strut 20 may have the opposite structure as described above. That is, the column attachment portion of the hard and soft earth type pile 1 may have the structure shown in FIG. 4, and the pile attachment portion of the column 20 may have the structure shown in FIG. 2.

The post 20 may include one or more reinforcing plates 26 between the main body 22 and the pile attachment portion 24, as illustrated in FIG. The reinforcing plate 26 can have a triangular shape, as illustrated in FIG. The main body 22, the pile attachment portion 24, and the reinforcing plate 26 of the support column 20 may be integrally formed or welded together. The reinforcing plate 26 can further improve the strength of the support column 20.

Preferably, the frame includes a front support bar, a rear support bar longer than the front support bar, a fastening member connecting the column to the front support bar and the rear support bar, the front support bar, and the rear support bar. a column, and a longitudinal member connected to the rear support bar, the connection with the rear support bar being at a higher position from the connection with the front support bar at a lower position in a direction parallel to the column; further comprising a vertical member arranged to be inclined toward the rear support bar, a cross member connected to the vertical member, and a clamp connected to the cross member, the angle θ ₂ between the column and the rear support bar is , the angle θ ₁ between the column and the front support bar is equal to or larger than θ ₁ , and the center of gravity is closer to the rear support bar than the column.

The post 20 may include a hole 28 at the end of the body 22 proximate the stake attachment portion 24 for bolted connection of a fastening member. Preferably there are two or more holes 28. The fastening member is a connecting member for connecting the front support bar and the rear support bar to the column. The post 20 may also be provided with one or more holes 29 at the end of the body 22 opposite the pile attachment 24 for bolted connection of the stringers.

FIG. 5 is a schematic external view showing an example of a manner in which the column attachment portion 14 of the hard and soft earth type pile 1 and the pile attachment portion 24 of the column 20 are fastened with bolts. The right-hand diagram is an enlarged view of the portion surrounded by the broken line in the left-hand diagram of FIG.

Preferably, the fastening member includes two or more holes for connecting to the strut 20 with bolts, the hole having an elongated shape in a direction perpendicular to the longitudinal direction of the strut 20, and a hole for connecting the front support bar. A hole is provided for connecting the hole and the rear support bar, and has an elongated shape in a direction parallel to the longitudinal direction of the support column 20.

FIG. 6 shows a schematic front view of an example of the fastening member. The fastening member 50 may be made of the same material as the column or support bar, for example steel. The fastening member 50 may include holes 501 for bolted connections to the struts, and holes 502 and 503 for connecting the front and rear support bars.

Preferably there are two or more holes 501. By having two or more holes 501, the fastening member 50 can be more stably fixed to the support column. The hole 501 preferably has an elongated shape in a direction perpendicular to the longitudinal direction of the column, as illustrated in FIG. 6 . Since the hole 501 has an elongated shape in a direction perpendicular to the longitudinal direction of the column, the position of the fastening member 50 connected to the column can be easily adjusted. At least some of the two or more holes 501 preferably have different positions in the longitudinal direction of the strut, as illustrated in FIG. By having at least some of the two or more holes 501 at different positions in the longitudinal direction of the column, the distance between adjacent holes can be increased, and the fastening member 50 can be more stably fixed to the column.

The length of the hole 501 in the longitudinal direction is preferably 30 to 40 mm, and the length in the transverse direction is preferably 10 to 20 mm. Each of the holes 502 and 503 has one or more holes.

The holes 502 and 503 preferably have an elongated shape parallel to the longitudinal direction of the column, as illustrated in FIG. Since the holes 502 and 503 have an elongated shape in the longitudinal direction of the support column, the positions of the front support bar and the rear support bar connected to the fastening member 50 can be easily adjusted. The length of the holes 502 and 503 in the longitudinal direction is preferably 30 to 40 mm, and the length in the transverse direction is preferably 10 to 20 mm.

FIG. 7 is a schematic external view showing an example of a mode in which the two holes 28 of the support column 20 and the two holes 501 of the fastening member 50 are aligned and the fastening member 50 is connected to the support column 20 with bolts.

The front support bar and the rear support bar (hereinafter also collectively referred to as support bars) may be conventional support bars. Preferably, as illustrated in FIG. 8, the front support bar 30 is connected to the fastening member 50 and slopes more forward than the strut 20, the rear support bar 40 is longer than the front support bar 30, and the fastening member 50 It is connected to the support column 20 and is inclined rearward than the support column 20.

The front support bar 30 can be, for example, a member having an L-shaped cross section with a side length of 25 to 75 mm and a length of 1200 to 1700 mm. Similarly, the rear support bar 40 can be a member having an L-shaped cross section with a side length of 25 to 75 mm and a length of 1700 to 2200 mm.

The front support bar 30 and the rear support bar 40 can be connected to the longitudinal members along with the struts 20. As illustrated in FIG. 8, the ends of the front support bar 30, the ends of the rear support bar 40, and the ends of the struts 20 therebetween may be connected to the longitudinal member 60.

Front support bar 30 may include one or more holes at the end for bolted connection with fastening members 50. The front support bar 30 may also be provided with one or more holes at the opposite end for bolted connection to the stringers. The rear support bar 40 may similarly include one or more holes at each end for bolted connection to the fastening members 50 and one or more holes for bolted connection to the stringers.

The angle θ ₁ between the strut 20 and the front support bar 30 shown in FIG. 8 is preferably 10 to 45 degrees, more preferably 15 to 40 degrees, and still more preferably 20 to 35 degrees. By setting the angle θ ₁ within the above-mentioned preferable range, it is possible to ensure the height of the structure held by the pedestal, such as a solar panel, from the ground, and to further improve the structural strength of the pedestal. The angle θ ₂ between the strut 20 and the rear support bar 40 shown in FIG. 8 is preferably 15 to 50 degrees, more preferably 20 to 45 degrees, and even more preferably 25 to 40 degrees. By setting the angle θ ₂ within the above-mentioned preferable range, it is possible to secure a space under the structure such as a solar panel held by the pedestal, and to further improve the structural strength of the pedestal.

The stringers 60 can be conventional stringers. As illustrated in FIG. 8 , the longitudinal members 60 are connected to the front support bar 30 , the struts 20 , and the rear support bar 40 , with a lower front end connecting the front support bar 30 and a lower end connecting the rear support bar 40 . It may have an inclination of an angle α with respect to the horizontal direction so that the rear side is higher. The stringers 60 are also connected to the cross members. The stringer 60 may include holes for bolted connections with the front support bar 30, the struts 20, the rear support bar 40, and the cross members 70.

The angle α of the longitudinal members 60 is greater than 0 degrees, preferably 25 degrees or less, more preferably 5 to 20 degrees, and still more preferably 10 to 15 degrees. By setting the angle α within the above-mentioned preferred range, it is possible to obtain a natural cleaning effect of snow and rainwater that falls on the structure such as a solar panel held by the mount, and to achieve more favorable stability of the mount. If the structure is a solar panel, it is possible to improve the solar power generation effect.

FIG. 9 illustrates an example of how the fastening member 50 is connected to the front support bar 30 and the rear support bar 40, and the vertical member 60 is connected to the front support bar 30, the column 20, and the rear support bar 40. A schematic diagram of the external appearance, an enlarged view (a) of an example of the connection between the fastening member 50, the front support bar 30, and the rear support bar 40 surrounded by the broken line, and the front support bar 30 and the vertical member 60 surrounded by the broken line. An enlarged view (b) of an example of the connection mode of , and an enlarged view (c) of an example of the connection mode of the support 20 and the vertical member 60 surrounded by broken lines are shown.

Cross member 70 can be a conventional cross member. The cross members 70 may be connected to the longitudinal members 60 and arranged substantially perpendicular to the longitudinal members 60. The cross members 70 may be provided with holes for bolted connections with the longitudinal members 60. The cross members 70 may be arranged across two or more longitudinal members. The cross member 70 can be one or more.

The present disclosure is also directed to a cradle system that includes a plurality of the cradle described above. FIG. 10 is a schematic external view showing an example of a mount system including a horizontal member 70 connected to the vertical members 60 of two mounts, and an enlarged view of an example of the connection mode between the vertical member 60 and the horizontal member 70 surrounded by a broken line. shows. As shown in FIG. 10, the vertical members 60 and the horizontal members 70 may be connected with bolts using L-shaped fittings. In FIG. 10, the two frames may include a common cross member 70, or the cross members 70 provided on each of the two frames may be connected.

The trestle system can hold any structure, preferably a solar panel. FIG. 11 is a schematic external view showing an example of a solar panel 90 held by a clamp 80 on the horizontal member 70 spanning two frames in FIG. 10, and two solar panels 90 connected to the horizontal member 70. An enlarged view of an example of how the solar panel 90 is held by the clamp 80 (the part surrounded by the broken line), and an enlarged view of an example of how the end of the solar panel 90 is held by the clamp 80 connected to the cross member 70 (the part surrounded by the broken line) (enclosed part).

The cross members 70 may include an extension member that allows the cross members 70 to be combined with each other. The extension member may be integral with the end of the cross member 70 or may be connected to a hole in the end of the cross member 70 with a bolt. By combining a plurality of cross members 70 via extension members at the ends of the cross members 70, the cross members 70 can be extended. By extending the cross member 70, a larger number of solar panels can be held.

FIG. 12 shows a schematic front view of an example in which five solar panels are held using three frames 100. In FIG. 12, the three solar panels on the left side are held by the horizontal members 70 spanning two frames 100, and the two solar panels on the right side are held by the horizontal members 70 of one frame 100. The cross members 70 are connected to each other via extension members 71 at the ends of the cross members 70 .

13 to 15 show schematic diagrams of a carport constructed using four frames 100. Solar panels can be placed on the ceiling of the carport. In the examples shown in FIGS. 13 to 15, a total of 12 solar panels are held on the ceiling of the carport held by four mounts 100.

As illustrated in FIGS. 13 and 14, the present pile for both hard and soft soils may include a concrete reinforcing portion 16 between the third spiral blade and the column attachment portion. By providing the concrete reinforcing portion 16, it is possible to better suppress subsidence and fall, and therefore it is possible to support a structure with a larger weight. For example, when a solar panel is placed on the ceiling of a large frame such as a carport, the strength of the frame can be further improved by providing a concrete reinforcing portion. Conventionally, when using concrete foundations, it was necessary to construct and anchor large concrete blocks, which could result in high material and construction costs. By pouring concrete between the blade and the column attachment part to form the concrete reinforcing part 16, it can be easily constructed using less concrete, so material costs and construction costs can be reduced.

1 Pile for both hard and soft geology 10 Buried part 101 Main body part of buried part 102 Tip part of buried part 11 First spiral blade 12 Second spiral blade 13 Third spiral blade 14 Strut mounting part 15 Hole of pillar mounting part 16 Concrete reinforcement part 20 Pillar 22 Main body of the pillar 24 Pile attachment part 25 Hole in the pile attachment part 26 Reinforcement plate 28 Hole for connecting with the fastening member of the pillar 29 Hole for connecting with the vertical member of the pillar 30 Front support bar 40 Rear support bar 50 Fastening member 501 Hole for connecting to the column of the fastening member 502 Hole for connecting the front support bar of the fastening member 503 Hole for connecting the rear support bar of the fastening member 60 Vertical member 70 Cross member 71 Extension member 80 Clamp 90 Solar panel 100 Frame

Claims (15)

A pile for both hard and soft ground for fixing structures to the ground,
A buried part that is screwed into the ground from the tip, and a column attachment part to which a column can be attached, which is located at the end opposite to the tip,
The buried part has a spiral blade screwed into the ground on its outer peripheral surface,
The spiral blade is
a first spiral blade disposed on the tip side;
a second spiral blade arranged closer to the attachment part than the first spiral blade and having a larger diameter than the first spiral blade; and a second spiral blade arranged closer to the attachment part than the second spiral blade; a third helical vane having a larger diameter than the second helical vane;
A pile for both hard and soft soil. The first spiral blade has a diameter that is more than 1 times and 1.6 times or less than the diameter of the main body of the buried part,
The second spiral blade has a diameter that is 1.7 times or more and 2.7 times or less than the diameter of the main body of the buried part,
The third spiral blade has a diameter that is 2.8 times or more and 3.7 times or less than the diameter of the main body of the buried portion.
The pile for both hard and soft earth according to claim 1. The first spiral blade is arranged in a range of 0% or more and 65% or less of the total length of the buried portion with the tip as a base point,
The second spiral blade is arranged in a range of 54% or more and 75% or less of the total length of the buried portion, starting from the tip,
The third spiral blade is arranged in a range of 70% or more and 95% or less of the total length of the buried portion, starting from the tip.
The pile for both hard and soft earth according to claim 1. The number of spirals of the first spiral blade is 10 to 50 turns,
The number of spirals of the second spiral blade is one turn or more,
The number of spirals of the third spiral blade is one turn or more,
The pile for both hard and soft earth according to claim 1. The pillar attachment part is
The column has an elongated shape extending from the center of the column attachment part toward the outer periphery, and has a plurality of holes arranged radially with respect to the center of the column attachment part, or has a plurality of holes that are concentric with the center of the column attachment part. having a plurality of holes having an arc shape;
The pile for both hard and soft earth according to claim 1. A pile for both hard and soft earth according to any one of claims 1 to 5,
A pedestal comprising: one pillar connected to the pillar attachment part,
The pillar has a main body and a pile attachment part that can be connected to the hard and soft earth pile at the end of the main body,
The hard and soft earth type pile and the pillar are connected by fixing the pillar attachment part and the pile attachment part to each other,
The pillar attachment part has a plurality of holes that are elongated from the center of the pillar attachment part toward the outer circumferential side and are arranged radially with respect to the center of the pillar attachment part, and the pile attachment part includes: It has a plurality of holes having a concentric arc shape with respect to the center of the pile attachment part, or
The pillar attachment part has a plurality of holes having a concentric arc shape with respect to the center of the pillar attachment part, and the pile attachment part has an elongated shape from the center of the pile attachment part toward an outer peripheral side. and having a plurality of holes arranged radially with respect to the center of the pile attachment part,
trestle. 7. The trestle of claim 6, wherein the column comprises one or more reinforcing plates between the main body and the pile attachment. a front support bar and a rear support bar that is longer than the front support bar;
a fastening member that connects the column to the front support bar and the rear support bar;
A longitudinal member connected to the front support bar, the column, and the rear support bar, the vertical member being located at a higher position from a connection point with the front support bar that is located at a lower position in a direction parallel to the column. a longitudinal member arranged at an angle toward the connection with the rear support bar;
further comprising: a cross member connected to the vertical member; and a clamp connected to the cross member,
The angle θ ₂ between the column and the rear support bar is the same as or larger than the angle θ ₁ between the column and the front support bar, and the center of gravity is closer to the rear support bar than the column _. 7. The pedestal according to claim 6. Two or more holes for connecting the fastening member to the support column with bolts, the hole having an elongated shape in a direction perpendicular to the longitudinal direction of the support support, and a hole for connecting the front support bar. and a hole for connecting the rear support bar, the gantry according to claim 8, further comprising a hole having an elongated shape in a direction parallel to the longitudinal direction of the support column. The frame according to claim 8, wherein an angle θ ₁ between the column and the front support bar is 10 to 45 degrees, and an angle θ ₂ between the column and the rear support bar is 15 to 50 degrees. . 9. The frame according to claim 8, wherein the angle of the vertical member with respect to the horizontal direction is greater than 0 degrees and less than or equal to 25 degrees. A mount system comprising a plurality of mounts according to claim 8. The trestle system according to claim 12, wherein the cross members of adjacent trestles among the plurality of trestles are connected via an extension member. 14. The trestle system of claim 13, which is a carport. The mount system according to claim 14, wherein a solar panel is arranged on the ceiling of the carport.

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