JP2022128667A - Continuous pile and forming method thereof - Google Patents

Abstract

To provide a continuous pile formed by combining a pile formed of an H-beam used for a mountain retention wall, a retaining wall and a wall for reinforcement thereof, with a groove-shaped pile having groove-shaped members at both ends, a continuous pile formed by combining piles formed of multiple H-beam piles, and forming methods thereof, for cutting off water or preventing a landslide at a site like mountains and a residential area where approach of a large vehicle is difficult.SOLUTION: In a continuous pile, an H-beam pile 2 having a pair of flange parts 21, 22 and a web part 23 connecting the pair of flange parts 21, 22 at center parts thereof, and a groove-shaped pile 5 having a groove-shaped member 54 having a pair of flange parts 51, 52 and a web part 53 connecting the pair of the flange parts 51, 52 at end parts and provided at both end parts of a foundation member 55, are alternately arranged. In a groove part 56 surrounded by the pair of the flange parts 51, 52 and the web part 53, the flange parts 21, 22 of the H-beam pile 2 are arranged to be roughly in parallel to the web part 53 of the groove-shaped member to form the continued pile.SELECTED DRAWING: Figure 1

Description

The present invention relates to a continuous pile and a plurality of H-section steels, which are a combination of a pile made of H-section steel used as a retaining wall, a retaining wall, and a wall for reinforcement thereof, and a groove-shaped pile having groove members connected to both ends. The present invention relates to continuous piles in which piles composed of piles are combined, and methods for forming them.

Conventionally, in agricultural reservoirs and the like, steel sheet piles and the like have been used as wall piles for earth retaining in order to prevent the reservoir from collapsing in disasters such as heavy rain (Patent Document 1). The formation of wall piles is usually carried out using a pile rotary press-in method using a large motor, or a method of press-fitting steel sheet piles using a large pile driving device such as an auger using a leader. Furthermore, in a work site with a large work area, instead of steel sheet piles, piles made of H-shaped steel are arranged at regular intervals, and after using these as parent piles, a plurality of horizontally long horizontal sheet piles are arranged via joints between them. are fitted, and gaps between piles are filled with horizontal sheet piles to form walls (Patent Document 2).

Japanese Utility Model Laid-Open Showa 64-47841 JP 2016-204834

As a water stoppage measure on a wide flat site, it is possible to take sufficient water stoppage measures by driving large and thick steel sheet piles around the reservoir using a large pile driver. However, at sites such as agricultural reservoirs located deep in the mountains, there are often no roads for transporting construction vehicles to the site in the first place. Because the road is narrow and the site itself is narrow, it is difficult to bring in large vehicles such as large piling equipment and large equipment required for construction because it is a special site in the mountains. Therefore, at the site in the mountains, there is no choice but to use a compact and light weight piling device. Furthermore, even when piles are used to reinforce retaining walls in houses, there are many places where it is difficult for large vehicles to enter the site. do not have.

In addition, when driving steel sheet piles, if a small and light vehicle is used as a pile driving device, the driving force is weak and large and thick steel sheet piles cannot be driven. Therefore, it is conceivable to use small and thin steel sheet piles such as trench piles. The problem was that it was not possible to use

Furthermore, instead of connecting only small steel sheet piles to the continuous wall, piles made of H-shaped steel with strong strength are placed at regular intervals, and these are used as main piles, and multiple horizontal sheet piles are placed in between. It is also considered to connect piles made of H-beam steel and horizontal sheet piles via joints to form integral walls for earth retaining or retaining walls. Because it is made of wood and is thin, its strength is weak, and there is also the problem that it breaks from the horizontal sheet part due to natural disasters such as heavy rain and typhoons. Moreover, in the first place, there was also a problem that such a horizontal sheet pile construction method could not be implemented unless the site was large.

In view of the above points, the present invention provides an H system for use as retaining walls, retaining walls, and reinforcing walls for the purpose of stopping water and preventing landslides at sites where large vehicles cannot enter, such as mountains and residential areas. To provide a continuous pile obtained by combining a pile made of shaped steel and a grooved pile having groove members at both ends thereof, a connected pile obtained by combining piles made of a plurality of H-shaped steel piles, and a method for forming them. It is an object.

In order to achieve the above object, the continuous pile according to the present invention includes an H-shaped steel pile having a pair of flange portions and a web portion connecting the pair of flange portions at the center thereof, and a pair of flange portions and the pair of flange portions. A series of piles in which channel piles each having a web portion connecting at its ends are connected to both ends of a base member alternately with channel piles, wherein the pair of flange portions and web portions of the channel members are arranged alternately. The flange portion of the H-shaped steel pile is arranged in the enclosed groove so as to be substantially parallel to the web portion of the channel member.

The continuous pile according to the present invention is characterized in that the base member is an H-shaped member made of H-shaped steel.

In the continuous pile according to the present invention, the channel member is formed by the flange portion of the H-shaped member and a pair of angle irons provided on the flange portion surface side not connected to the web portion of the H-shaped member. It is characterized by comprising:

The continuous pile according to the present invention is characterized in that the interval between the pair of flange portions of the channel member is narrowed toward the web portion of the channel member.

In the continuous pile according to the present invention, a fixture is installed at a position on the groove surface side of the pair of flanges of the channel member and at a position separated from the web portion of the channel member by a width of the flange portion of the H-shaped steel pile or more. is provided.

The continuous pile according to the present invention is characterized in that the fixture is provided in a shape continuous from the upper end portion to the lower end portion of the groove surface side of the flange portion of the groove member.

The continuous pile according to the present invention is characterized in that the fasteners are provided at least on the upper end and/or the lower end of the groove surface side of the flange portion of the groove member.

The continuous pile according to the present invention is characterized in that the surface of the fixture facing the H-shaped steel pile is inclined with respect to the driving direction of the pile.

In the continuous pile according to the present invention, the fixtures are provided on the flanges of the groove members of the two groove surfaces of the groove pile, and the surface facing the H-shaped steel pile is aligned with the driving direction of the pile. characterized by being inclined in the same direction.

The continuous pile according to the present invention further includes a second fastener having an elongated shape on the groove surface of the flange portion of the groove member, and the longitudinal direction of the second fastener is arranged toward the open surface side of the groove. characterized by being

The continuous pile forming method according to the present invention uses a driving device having a function of driving an object by striking a weight, and a pair of flanges and a web portion connecting the pair of flanges at their ends. and an H-shaped steel pile having a pair of flanges and a web connecting the pair of flanges at their centers alternately in the ground A method for forming a series of piles by driving, comprising: (1) driving a channel pile into the ground; (3) driving the H-section steel pile at a position where one flange portion of the H-section steel pile is substantially parallel to the web portion of the channel member in the groove, and (3) the other flange of the H-section steel Another channel pile is driven at a position where the portion is substantially parallel to the web portion of the channel member within the channel surrounded by the pair of flange portions and web portion of the channel member.

In the continuous pile forming method according to the present invention, as the channel pile, on the channel surface side of the flange portion of the channel member, at a position separated from the web portion of the channel member by at least the width of the flange portion of the H-shaped steel pile It is characterized by forming a continuous pile using a fixture provided with a fixture.

In the method for forming a series of piles according to the present invention, in (2) above, an H-shaped steel pile is placed and driven between a fixture in the groove of the grooved pile and a web portion of the grooved member of the grooved pile. It is characterized by

In the continuous pile forming method according to the present invention, in (3) above, the H-shaped steel pile is arranged between the fixture in the groove of the other grooved pile and the web portion of the grooved member of the other grooved pile. As in, it is characterized by driving other grooved piles.

The continuous pile according to the present invention includes a first H-shaped steel pile having a pair of flange portions and a web portion that connects the pair of flange portions at the center, and a pair of flange portions and the pair of flange portions that connect the pair of flange portions at the center. A second H-section steel pile having a web portion is alternately arranged, and the flange of the first H-section steel pile is placed in a groove surrounded by the flange portion and the web portion of the second H-section steel pile. A continuous pile arranged so as to be substantially parallel to the web portion of the second H-section steel pile, the second A fixture is provided at a position spaced apart from the web portion of the H-section steel by at least the width of the flange portion of the first H-section steel pile.

The continuous pile according to the present invention is characterized in that the fixture is provided in a shape continuous from the upper end to the lower end on the groove surface side of the flange of the second H-shaped steel pile.

The continuous pile according to the present invention is characterized in that the fixture is provided at least on the upper end and/or the lower end of the groove surface side of the flange portion of the second H-section steel pile.

The continuous pile according to the present invention is characterized in that the surface of the fixture that faces the first H-shaped steel pile is inclined with respect to the driving direction of the pile.

In the continuous pile according to the present invention, the fixtures are provided on the flange portions of the H-section steel of the two grooved surfaces of the second H-section steel pile, respectively, and the surface facing the first H-section steel pile is the pile It is characterized by being inclined in the same direction with respect to the placing direction of

The continuous pile according to the present invention further includes a second fastener having an elongated shape on the groove surface of the flange portion of the second H-shaped steel pile, and the longitudinal direction of the second fastener is the open surface side of the groove. It is characterized by being arranged toward.

In the continuous pile forming method according to the present invention, a driving device having a function of driving an object by striking a weight is used to form a pair of flange portions and a web portion connecting the pair of flange portions at their centers. and a second H-shaped steel pile having a pair of flange portions and a web portion connecting the pair of flange portions at the center thereof are alternately driven into the ground. (1) Driving a first H-section steel pile into the ground; (2) A groove portion surrounded by a pair of flange portions and a web portion of the driven first H-section steel pile; (3) driving a second H-section steel pile at a position where one flange portion of the second H-section steel pile is substantially parallel to the web portion of the first H-section steel pile; Another first H-section steel pile at a position where the other flange portion of the second H-section steel is substantially parallel to the web portion of the H-section steel in the groove surrounded by the pair of flange portions and the web portion. It is characterized by placing a

In the method for forming a continuous pile according to the present invention, as a second H-section steel pile, a fixture is provided on the groove surface side of the flange section and at a position separated from the web section by at least the width of the flange section of the first H-section steel pile. It is characterized by casting using what is provided.

In the method for forming a continuous pile according to the present invention, in (2) above, a first H-section steel pile is provided between a fixture in the groove of the second H-section steel pile and a web portion of the second H-section steel pile. is placed and cast.

In the continuous pile forming method according to the present invention, in (3) above, a first Another second H-section steel pile is driven so that the H-section steel pile is arranged.

According to the present invention, both the H-shaped steel pile and the grooved pile used as the continuous pile are thick and have a structure that is resistant to external pressure, unlike small steel sheet piles such as trench piles. It is possible to form continuous piles by placing them in contact with each other and driving them alternately, thereby forming a strong continuous wall that is less susceptible to ground changes, external pressure, and the like. In addition, the flange portion of the H-shaped steel pile is placed in the groove portion of the channel pile having the channel members at both ends so as to be substantially parallel to the web portion of the channel member, and then driven. The piles can be fixed without using a connecting means or the like, and a continuous pile with sufficient strength can be constructed.

By using the H-shaped member made of H-shaped steel as the foundation member of the channel pile, the foundation member and the channel member can be firmly connected, and the channel pile with greater strength can be obtained. Further, if angle iron or the like is used as the channel member, it becomes possible to construct the channel member more simply. Furthermore, the width of the groove of the grooved pile is narrowed toward the inside, that is, the interval between the flanges of the grooved member is gradually narrowed toward the web. Positioning of the H-shaped steel pile driven into the groove becomes easy while absorbing positional deviation due to vibration etc. during driving, and the H-shaped steel pile can be easily driven into the desired position in the groove , it is possible to configure a continuous pile with a higher water stopping effect.

By providing fixtures for fixing other piles that make up the continuous pile at predetermined positions of the channel members of the channel pile, the piles will not bend when driving the H-shaped steel pile or channel pile. In addition, the continuous pile itself is disconnected by external pressure, and the retaining wall and retaining wall made of continuous pile, and the auxiliary part of the retaining wall and retaining wall are destroyed. can also be prevented.

By slanting the fixture provided on the grooved member from the driving direction of the pile, it is possible to firmly fix the fixture to the flange and reduce the resistance from external pressure to make it stronger. It becomes a strong fixture. Furthermore, fixtures are provided on the flanges of the channel member on the two groove surfaces of the channel pile, respectively, and the surfaces facing the H-shaped steel pile are inclined in the same direction with respect to the driving direction of the pile. Therefore, when driving an H-shaped steel pile adjacent to a grooved pile, or when driving a grooved pile adjacent to an H-shaped steel pile, it is easy to insert in the driving direction. Since it has an inclined angle, it can be inserted smoothly.

Furthermore, even when a plurality of H-shaped steel piles are alternately arranged to form a continuous pile instead of a continuous pile of a channel pile and an H-shaped steel pile, a fixture is provided at a predetermined position of the H-shaped steel pile. As a result, when the H-shaped steel pile is driven into the groove, it is prevented that the H-shaped steel pile is bent and driven, and the connection of the continuous pile itself is disengaged due to external pressure. It is also possible to prevent the retaining wall, the retaining wall, and the auxiliary wall of the retaining wall and the retaining wall from being destroyed.

By providing the fixture provided on the second H-shaped steel pile so as to be inclined from the driving direction of the pile, it is possible to firmly fix the fixture to the flange and reduce resistance from external pressure. It reduces the weight and makes for a stronger fixture. Furthermore, the fixtures are provided on the flange portions of the H-section steel of the two grooved surfaces of the second H-section steel pile, respectively, and the surfaces facing the first H-section steel pile By sloping in the same direction, when driving an H-shaped steel pile next to another H-shaped steel pile, it has an inclination angle that makes it easy to insert with respect to the driving direction, so it is smooth. can be inserted into the

According to the method of the present invention, by using a driving device having a function of driving an object by a method of striking a weight having a strong striking force, performance is lowered even if the driving device is small and light. Since it does not need to be used and has a simple mechanism, it can be easily carried to sites where work cannot be done with large equipment, and even in narrow places such as mountains, retaining walls and retaining walls, and auxiliary walls for retaining walls and retaining walls. etc. can be cast. In addition, when using grooved piles or H-shaped steel piles equipped with fixtures, the H-shaped steel piles that are joined by the fixtures can be easily fixed, eliminating the need for complicated processes and allowing easy connection. becomes. On the other hand, when the fixtures are welded at the time of placement, new connections can be made after confirming the condition of the ground. It becomes possible to

The perspective view explaining the continuous pile of this invention. The top view explaining the channel pile of this invention. The top view explaining the other aspect of the grooved pile of this invention. The top view explaining the other aspect of the grooved pile of this invention. The perspective view explaining the one aspect|mode which provided the fixture in the grooved pile of this invention. The perspective view explaining the one aspect|mode of the fixing tool of this invention. The perspective view explaining the other aspect which provided the fixture in the grooved pile of this invention. The perspective view explaining the other aspect which provided the fixture in the grooved pile of this invention. The perspective view explaining the other aspect which provided the fixture in the grooved pile of this invention. The perspective view explaining the other aspect which provided the fixture in the grooved pile of this invention. A perspective view for explaining a continuous pile forming method using the fixture of the present invention. The perspective view explaining the continuous pile of other embodiment of this invention. The perspective view explaining the one aspect|mode which provided the fixing tool in the 2nd H-section steel pile of this invention. The perspective view explaining the other aspect which provided the fixing tool in the 2nd H-section steel pile of this invention. The perspective view explaining the other aspect which provided the fixing tool in the 2nd H-section steel pile of this invention. The perspective view explaining the other aspect which provided the fixing tool in the 2nd H-section steel pile of this invention. Schematic diagram showing an example of a pile driving vehicle used for driving piles constituting the continuous pile of the present invention

FIG. 1 is a perspective view from the upper surface of an embodiment of the continuous pile according to the present invention. A channel-shaped member 54 having a web portion 23 connecting the H-shaped steel pile 2 at its center and a pair of flange portions 51 and 52 and a web portion 53 connecting the pair of flange portions 51 and 52 at their ends. 55 are arranged alternately with the groove piles 5 provided at both ends of the H-shaped steel piles 55, and the H-shaped steel piles 2 flange portions 21, 22 are arranged substantially parallel to the web portion 53 of the channel member to form a continuous pile.

The channel pile 5, as shown in FIG. In the example shown in FIG. 2, the structure is provided with a steel plate 551 as a foundation member and a channel steel 541 as a channel member 54, and the steel plate 551 and channel steel 541 are either A commercially available product that can be used as a pile to be buried in the ground can be used, and the iron plate and the channel steel are connected by a general method such as welding.

Further, as the base member 55 of the grooved pile 5, instead of the steel plate as shown in FIG. An H-shaped member 552 made of H-shaped steel having The web portion 53 of the channel member 54 (channel steel 541) can be formed by welding or the like to the side of the pair of flange portions of the H-shaped member 552 that is not connected to the web portion. In this case, since the contact area between the channel member 54 (channel steel 541) and the base member 55 (H-shaped member 552) increases, it is possible to construct a channel pile with higher strength. The size, thickness, depth, etc. of the H-shaped steel used as the H-shaped member are not particularly limited, and can be changed according to the site conditions and the size of the channel-shaped member. good too.

The channel member 54 has a substantially U-shape formed by the flange portions 51 and 52 and the web portion 53 , and a groove portion 56 exists in the region surrounded by the flange portions 51 and 52 and the web portion 53 . For example, when the channel steel 541 is used as the channel member 54, the flange portion x web portion is 65 mm x 125 mm. can be appropriately changed depending on the situation of the site and the size of the H-shaped steel piles forming the continuous piles.

The width of the flange portion and the width of the web portion of the channel-shaped member 54 may be always constant (perfectly U-shaped) or may vary. As shown in FIGS. 2 and 3, the width of the flange portion gradually widens toward the web portion 53 so that the distance between the flange portions 51 and 52 narrows toward the web portion 53. Then, it is possible to provide a play portion at the time of positioning, and while absorbing positional deviation due to vibration etc. The flange portion of the H-shaped steel pile 2 can be placed and driven in the vicinity of the web portion of the channel member 54, which strengthens the connection between the piles, has a higher water stop effect, and is resistant to external pressure. It becomes possible to construct a continuous pile.

As the channel member 54, instead of the commercially available channel steel 541, as shown in FIG. By doing so, it is also possible to configure the channel member 54 with the flange portion of the H-shaped member and the pair of angle irons 542 . The angle steels, also called angle bars, are commercially available, and are provided on both ends of the flange portion on the opposite side where the web portion of the H-shaped member 552 and the flange portion are joined.

The H-section steel pile 2 is, as shown in FIG. can use things. For example, as the H-shaped steel pile 2, one having a flange portion x web portion of 100 mm x 200 mm is used. It can be changed as appropriate in relation to the size of the shaped pile 5 .

In the H-beam pile 2, the length of the flange portions 21, 22 is shorter than the web portion 53 of the channel member 54 of the channel pile, and the length of the web portion 23 is longer than the flange portions 51, 52 of the channel member. use things By using the length of the flange portions 21 and 22 of the H-shaped steel pile 2 that is shorter than the length of the web portion 53 of the channel member of the channel pile, the H-shape is formed near the web portion 53 of the channel member. It becomes possible to arrange the flange portions 21 and 22 of the steel pile 2 . That is, as shown in FIG. 1, it is possible to arrange the flanges 21 and 22 of the H-shaped steel pile 2 into the groove 56 of the grooved pile, and the H-shaped steel piles are separated by horizontal sheet piles or the like. Unlike the conventional connected structure, the web portion 23 of the H-shaped steel pile 2 plays the role of a conventional horizontal sheet pile, and the grooved pile 5 plays the role of a conventional H-shaped steel pile. Compared to sheet pile structures, the strength of the entire continuous pile increases. Furthermore, by using the H-shaped steel pile 2 instead of the horizontal sheet pile, the flange portion 21 of the H-shaped steel pile 2 is inserted between the flange portions 51 and 52 of the channel member of the channel pile. Therefore, the flange portion of the H-shaped steel pile 2 not only suppresses the pressure of earth and sand on the wall surface, but also the flange portion 21 of the H-shaped steel pile 2 is fixed by the grooved pile 5. As a result, the fixation of the H-shaped steel pile 2 is further strengthened, making it possible to form a stronger continuous pile.

As the flange portion 21 of the H-section steel pile is brought closer to the web portion 53 of the channel member, the gap between the H-section steel pile 2 and the channel pile 5 that are adjacent to each other disappears, and the H-section steel pile 2 and the channel shape become closer. The stakes 5 can be naturally fixed at their respective positions without using separate connection means. Furthermore, if the H-shaped steel pile 2 and the grooved pile 5 are arranged at positions close to each other and their upper portions are fixed by welding or the like, the continuous piles are fixed more firmly.

On the other hand, by using a length of the web portion 23 of the H-shaped steel pile longer than that of the flange portion 51 of the channel member, the flange portions 51 of the channel member are brought closer to prevent contact between the channel piles 5. While preventing, the web portion 23 can constitute a wall that replaces the transverse sheet pile. The length of the web portion 23 of the H-shaped steel pile is not particularly limited, but if it exceeds five times the length of the foundation member 55 of the grooved pile 5, the arrangement balance becomes poor, and the wall made of continuous piles Since there is a possibility that the function as a decrease, it is more preferable that it is up to about 5 times.

In the example shown in FIG. 1, the channel member 54 comprises a pair of flange portions 51, 52 and a web portion 53 connecting the pair of flange portions. For example, a pair of fixtures 6 can be used.

As shown in FIG. 5, the fixtures 6 are provided at least on the upper and lower ends of the flanges 51 and 52 of the groove member on the side of the groove 56 to prevent the pile from bending and driving. Moreover, it is more desirable in that it is possible to further prevent the continuous piles from being destroyed. That is, when driving the H-shaped steel pile 2 in the vicinity of the installed channel pile 5, the fixture 6 provided at the upper end portions 51 and 52 of the flanges of the channel member is used as a mark to fix it. The flange part 21 of the H-shaped steel pile can be reliably arranged between the tool 6 and the web part 53 of the channel member, and the H-shaped steel pile 2 can be driven at a desired position without causing positional deviation. be able to. On the other hand, when driving the channel pile 5 in the vicinity of the H-shaped steel pile 2 that has already been driven, the Using the fixture 6 as a mark, the position of the channel pile 5 is adjusted so that the installed H-shaped steel pile 2 is arranged between the fixture 6 and the web portion 53 of the channel member, and the desired position is obtained. can be cast in

The shape of the fixture 6 is arbitrary, but for example, it may be an elongated rectangular parallelepiped shape as shown in FIGS. Install facing the 6(b), 6(c) and 6(d) in side view, it may be triangular, trapezoidal, or elongated with a partial fan shape. is used, the inclined surface 6A is placed facing the web portion of the channel member. In addition, a cubic member may be used instead of the elongated shape.

Further, as shown in FIG. 7, the fixture 6 can be provided in a shape continuous from the upper end to the lower end of the groove 56 side of the flanges 51 and 52 of the groove member of the groove pile. If the fixture 6 is provided continuously from the upper end to the lower end of the flanges 51 and 52 of the grooved member 54, the area for welding the fixture to the flange increases and the labor increases, but the fixture is H-shaped. Since it is formed continuously with respect to the insertion direction of the steel pile, positioning of the H-shaped steel pile 2 is further facilitated, and it is further prevented that the H-shaped steel pile or the channel pile is bent and driven. Since the connection between piles is made through stronger fixtures, the connection between piles becomes even stronger. It is possible to further prevent it from being lost.

Furthermore, as shown in FIG. 8, the fixture 6 has a surface 6A facing the H-shaped steel pile 2 driven adjacent to the channel pile 5, which is inclined with respect to the driving direction of the pile. It is preferable to use a material from the viewpoint of making the connection between piles smoother. That is, the grooved pile 5 and the H-shaped steel pile 2 are alternately driven to form a continuous pile, and the flange portion of the H-shaped steel pile 2 is arranged in the groove 56 provided in the grooved pile 5. However, in the fixture 6 provided on the channel member, the surface 6A (opposite surface of 6B) facing the H-shaped steel pile 2 driven adjacently is inclined with respect to the driving direction of the pile. is doing. For example, as shown in FIG. 6(a), when the fixture 6 itself has a structure like an elongated rectangular parallelepiped, the vertical surface (longitudinal surface) is slanted from the driving direction of the pile. 6(b), 6(c) and 6(d), when the fixture has a structure such as a slanted elongated shape, the slanted surface faces the driven H-section steel pile. Place it facing your face.

If you try to install a fixture at a position close to the web of the channel member, the distance to the web will be too short, making it difficult to complete the welding work. By providing it, at a position away from the web portion 53 of the channel member, the distance from the web portion makes it easy to perform welding work, and it is possible to firmly fix the fixture to the flange portion. By inclining the , it is possible to increase the resistance surface against external pressure, and the fixture becomes stronger.

When the fasteners 6 are provided in pairs on the flanges 51, 52 of the channel members of the two grooves 56 of the channel pile, respectively, as shown in FIG. However, it is more desirable that the surface facing the H-shaped steel pile is inclined in the same direction as the driving direction of the pile (in FIG. 9, it is inclined in the upper right direction of the paper surface). That is, by adopting such a configuration that inclines in the same direction, when driving the H-shaped steel pile 2 adjacent to the grooved pile 5, the grooved pile 5 can be placed adjacent to the H-shaped steel pile 2. Since the fixture has an inclination angle with respect to the direction in which it is easy to insert the pile, the pile can be inserted smoothly.

That is, when driving the H-shaped steel pile 2 in the vicinity of the grooved pile 5 that has already been driven, The H-shaped steel pile 2 is driven using the provided fixture 6 as a mark. If the groove 56 into which the shaped steel pile 2 is inserted is inclined to open upward (the grooved member on the left side in FIG. 9), the H-shaped steel pile 2 can be easily inserted. On the other hand, when driving the grooved pile 5 near the H-shaped steel pile 2 that has already been driven, the grooved pile 5 is driven from above the H-shaped steel pile 2, so that the groove 56 is positioned downward. If the structure is inclined so as to be opened toward (the channel member on the right side in FIG. 9), it becomes difficult to interfere with the H-shaped steel pile 2 that has already been driven, and the channel pile 5 can be inserted. easier.

Further, in addition to the upper and/or lower end fasteners 6, a second fastener 8 may be provided between the upper and lower ends of the groove face of the flange of the channel member. In this case, it is more desirable that the second fixture 8 has an elongated shape, is arranged on the groove surface side of the flanges 51 and 52 of the groove member, and has its longitudinal direction directed toward the open surface side of the groove. . For example, as shown in FIG. 10, the first fixtures 6 at the upper and lower ends are inclined from the driving direction of the pile, while the second fixtures 8 are A plurality of elongated rectangular parallelepiped fasteners are provided on the wall surface portions of the flanges 51 and 52 of the groove member, and the longitudinal direction of the elongated second fixtures is directed toward the open surface side of the groove 56. Arranged (arranged at a position where the longitudinal direction of the rectangular parallelepiped is horizontal). In addition, the second fixture 8 has not only a rectangular parallelepiped shape but also a triangular, trapezoidal, and partially rectangular parallelepiped shape when viewed from the side as shown in FIGS. It may be an elongated shape having a fan shape, etc. When using such an elongated shape, it is installed so that the 6A side is the upper surface side.

If the fixtures 6 and 8 are formed so that the longitudinal direction (longitudinal portion) of the elongated shape is in the vertical direction (the direction in which the pile is driven), it is necessary to provide them at a narrow position near the web portion of the channel member. For this reason, the working space is narrow and the welding operation is difficult, and the connection cannot be completely welded, so that the strength may be lowered. On the other hand, if the elongated shape is formed so that the longitudinal direction (longitudinal portion) is in the lateral direction (the direction toward the open surface side of the groove), such a problem does not occur and the fixture can be firmly adhered. For this reason, it is preferable to give priority to the ease of insertion of the fixtures 6 provided at the upper end and the lower end, which serve as marks at the time of placing, even if the strength is somewhat sacrificed. Although it is ideal, the second fixture 8 in the portion other than the lower end and the upper end should be oriented so that the longitudinal direction (longitudinal portion) of the elongated shape is the horizontal direction (the direction toward the open surface side of the groove), giving priority to strength. ).

As described above, by providing fixtures of various shapes at various positions of the channel members 54 of the channel piles that constitute the continuous pile, it is possible to form a continuous pile that is stronger and free from misalignment.

Next, the method for forming a continuous pile according to the present invention will be described. A channel pile 5 in which a channel member 54 having a web portion 53 connecting the flange portions 51 and 52 and the pair of flange portions at the ends thereof is coupled to both ends of a base member 55, and a pair of flange portions 21 and 22 and an H-shaped steel pile 2 having a web portion 23 connecting the pair of flange portions at the center thereof are alternately driven into the ground to form a continuous pile. One flange portion 21 of the H-shaped steel pile is placed in the groove portion 56 surrounded by the pair of flange portions and the web portion of the channel member of the channel pile that has been driven, and the web portion 53 of the channel member The H-shaped steel pile 2 is driven at a position substantially parallel to the position where the other flange portion 22 of the H-shaped steel pile is substantially parallel to the web portion 53 of the channel member in the groove portion 56 of the channel member. Then, another grooved pile 5 is driven, and alternate driving of the grooved pile 5 and the H-shaped steel pile 2 is repeated, and the H-shaped steel pile 2 and the grooved pile 5 are placed at desired positions in the ground. to form a continuous pile.

More specifically, it is carried out in the following steps.

First, a mark is made on the ground where the continuous pile is to be buried, and a trench is dug at the positioned place (planned burial position) using human power or a mini excavator. In addition, if the ground at the position where the continuous pile is to be buried is strong, advance excavation is performed on the ground at the planned burial position.

Pre-drilling refers to excavating the ground where the continuous pile is to be formed in advance using an auger, etc., and then pulling out the auger to make a hole in the ground, or return the soil to a different location and perform the same work. It refers to a construction method in which a large number of holes are repeatedly drilled in the ground and the state of the soil in the entire ground where the piles are to be laid is softened before burying, but the method is not particularly limited. For example, an auger is attached to the tip of a mini excavator of a construction machine with a rotary drive mechanism, and by rotating the auger with the rotary drive mechanism, the auger is buried in the ground. By repeating this, the soil in the ground can be softened. Here, an example of pre-digging by repeatedly burying and extracting a single auger was explained, but pre-digging can be efficiently performed using multiple augers, and the shape of the auger used for pre-digging can be changed as appropriate. It is possible to The device used for this pre-drilling may also be used as a placing device, and it is possible to appropriately select whether or not to perform pre-drilling according to the conditions of the site.

Next, the placing device 1 having a function of placing an object by striking a weight is placed on the ground near the planned burial position. In a narrow site, a large power unit cannot be used to install a series of piles. On the other hand, when burying a series of piles, it is necessary to use a driving device that has a function of driving an object by a method of striking a weight with a strong impact force even though it is small.

As the driving device 1, for example, as shown in FIG. 17, there is a mini boom 11 having a boom 11 whose tip position can be moved three-dimensionally by a joint or a telescopic mechanism and an outrigger 12 for fixing the driving device on the ground. An apparatus consisting of a crane and having a driving tool 10 with a weight 107 made of steel without a leader suspended from the tip of the boom 11 is used. Such a device is small and lightweight, and can be moved even in places where large vehicles cannot enter. The driving device 1 can also be used when lifting an H-shaped steel pile or a grooved pile that constitutes a continuous pile and installing it at a desired position.

In the example shown in FIG. 17, the driving device 1 is a device in which a weight 107 is connected to a mini-crane. - An installable tower-shaped fixed installation device may be used as long as it is a device to which a weight can be connected. In places where vehicles cannot enter or where even a temporary monorail cannot be installed, it is more desirable to use a placing device that can be assembled and installed on site.

The driving tool 10 does not have a leader that is an attachment with a running rail that narrows the working radius at the work site, and in the example shown in FIG. Connected. The driving tool 10 has a driving tool connecting device 101 connected to the tip of a boom 11, an iron rod 102 is inserted into the connecting device 101, a wire 103 is connected to the connecting device 101, and a weight 107 is vertically moved. It consists of a lifting device 106 for lifting and lowering, and a weight 107 made of steel such as Monken. The driving tool 10 is not limited to the configuration as described above, and is configured such that a weight capable of applying a load to a series of piles to be buried is moved up and down with respect to the ground to hit the series of piles. Any configuration can be used as long as it can be embedded in the substrate. Also, the weight 107 is assumed to be a steel weight, but is not limited to this. The lifting device 106 is provided with a rope 105 for manually removing the weight 107 from the hook 104 in such a manner that a force acts on the hook 104 .

Next, in the vicinity of the planned burial position, the driving device 1 or a device different from the 1 is used to lift the grooved pile 5 shown in FIG. and build it into the ground. The channel pile 5 can be lifted using the hook 104 of the driving device 1 or the like.

After the grooved pile 5 is erected at the planned burying position, the boom 11 of the driving device 1 is operated to move it so as to come into contact with the upper portion of the grooved pile 5. - 特許庁After confirming that the cushioning member 17 and the protective attachment 18 are positioned at the center of the upper portion of the channel pile 5 and are in contact with each other, the driving device 1 is operated to wind up the wire 103 to pull up the weight 107. After that, the operator manually pulls the rope 105 downward, so that the weight 107 is released from the hook 104 of the lifting device 106, the weight 107 falls downward, and the groove pile 5 is impacted and driven. . By repeating this work and moving the weight 107 up and down many times, a striking force is repeatedly applied to the grooved pile 5 from above, and the grooved pile 5 is embedded to a desired position in the ground.

When the burial of the grooved pile 5 in the ground is completed, the driving device 1 having the function of driving the object by striking the weight as shown in FIG. As shown, one flange portion 21 of the H-beam steel pile 2 is positioned within a groove 56 surrounded by a pair of flange portions and web portions of the channel member of the driven channel pile. The H-shaped steel pile 2 is driven at a position substantially parallel to 53 .

Specifically, similarly to driving the grooved pile 5, the H-shaped steel pile 2 is lifted using the driving device 1 or a device different from the driving device 1, and the H-shaped steel pile 2 is planned to be buried. move to position. As shown in FIG. 1, the H-shaped steel pile 2 is embedded in the groove portion, which is an area surrounded by the flange portions 51 and 52 and the web portion 53 of the groove member of the groove pile 5 that has already been driven. 56, the flange portion 21 of the H-shaped steel pile 2 is completely accommodated, and one flange portion 21 of the H-shaped steel pile 2 is positioned substantially parallel to the web portion 53 of the channel member, After adjusting to the position, the H-shaped steel pile 2 is built into the ground. After the H-shaped steel pile 2 is erected, the weight 107 is moved up and down many times by the same method as the driving of the grooved pile 5, and the impact force is repeatedly applied from above, and the H-shaped steel pile 2 is placed on the ground. Embed to the desired position inside. After that, the H-shaped steel pile 2 and the upper part of the channel member 54 of the channel pile can be fixed by welding or the like, and in this case the connection becomes stronger.

Also, when using a channel pile provided with a pair of fixtures 6 as shown in FIG. 5 etc., as shown in FIG. After adjusting the position so that the flange portion 21 of the H-shaped steel pile is arranged between the fixture 6 and the web portion 53 of the channel member, the H-shaped steel pile 2 is erected in the ground, and in the same way Then, the H-shaped steel pile 2 is embedded to a desired position in the ground. By using the web portions 51 and 52 of the channel members of the channel pile provided with the fixtures 6 in this way, when the H-section steel pile 2 is driven into the channel portion 56, the H-section steel pile is The fixture 6, the web 53 of the channel-shaped member, and the pair of flanges 51, 52 are arranged in an area surrounded by four sides, and the position is not shifted, and the H-shaped steel pile 2 is bent and driven. can be prevented. Furthermore, since it is structured to surround the H-shaped steel piles 2 from all four sides, it is possible to prevent the continuous piles from being broken due to the disconnection of the continuous piles due to external pressure. .

When the H-section steel pile 2 has been completely buried in the ground, the driving device 1 and the like are used again, and as shown in FIG. Another channel pile 5 is driven in a position substantially parallel to the web portion 53 of the channel member within the channel portion 56 surrounded by the pair of flange portions and web portions of the channel member.

Specifically, in the same manner as in the previous driving, the driving device 1 or a device different from the driving device 1 is used to lift another channel pile 5 and move it to the planned burial position. The driving position of another grooved pile 5 is such that the flange portion 21 of the already driven H-section steel pile 2 and the flange portion 22 on the opposite side are the grooves of another grooved pile to be newly driven. Another channel pile 5 is positioned so as to fit completely in the area surrounded by the web portion 53 of the member 54 and the flange portions 51, 52 and to be substantially parallel to the web portion 53 of the channel member. and erect it in the ground at that position. After erecting another grooved pile 5, the weight 107 is moved up and down many times by the same method as before, and a striking force is repeatedly applied from above, and another grooved pile 5 is set in the desired location in the ground. Embed to the position. After that, the H-shaped steel pile 2 and the upper part of the channel member 54 of another channel pile 5 can be fixed by welding or the like.

In addition, when using another grooved pile 5 to be newly driven in the vicinity of the H-shaped steel pile 2 here, in the case of using the one provided with the fixture 6 as shown in FIG. After adjusting the position so that the other flange portion 22 of the H-shaped steel pile is placed between the fixture 6 in the groove portion of the groove pile and the web portion 53 of the groove member of another groove pile, another The grooved pile 5 is erected in the ground, driven by the same method, and another grooved pile 5 is embedded to a desired position in the ground. By using the channel-shaped member provided with the fixture in this way, it is arranged so as to be surrounded by the region surrounded by the fixture, the web portion of the channel-shaped member, and the pair of flanges in the same manner as described above. In addition, since it is driven, the position of another grooved pile itself does not shift, and it is possible to prevent it from being bent and driven, and form a continuous pile that is strong against external pressure. can do.

Furthermore, in a similar manner, the groove portion, which is an area close to another groove pile 5 driven immediately before and surrounded by the web portion 53 and the flange portions 51 and 52 of the groove member of the other groove pile 5 At 56, one flange portion 21 of another H-shaped steel pile 2 is driven at a position where the flange portion of another H-shaped steel pile is completely accommodated, and at a position where one flange portion 21 is substantially parallel to the web portion 53 of the channel member. By repeating the alternate driving of the grooved pile 5 and the H-shaped steel pile 2, a wide continuous pile is formed.

In the above-described embodiment, after the groove pile 5 is driven, the H-shaped steel pile 2 is driven, and another grooved pile 5 is driven, but the H-shaped steel pile 2 may be driven first, the grooved pile 5 may be driven at a position close to the H-shaped steel pile 2, and another H-shaped steel pile 2 may be driven. In the present invention, it is meaningful to drive the H-shaped steel piles 2 and the grooved piles 5 alternately, and the order of driving the piles does not matter.

1 and 2, the steel plate 551 as the base member 55 and the channel steel 541 as the channel member 54 are used. As shown in Figure 1, an H-shaped member 552 may be used as the base member, or an angle iron 542 may be used as the channel member.

Furthermore, as shown in FIGS. 5 to 9, the fixtures 6 of the channel members of the channel piles are provided at least at the upper and lower ends of the flanges 51 and 52 of the channel members on the side of the channel surface. or a shape continuous from the upper end to the lower end of the groove surface side of the flanges 51 and 52 of the groove member may be used, and the surface 6A facing the H-shaped steel pile 2 is a pile and the flange portions 51 and 52 of the groove members of the two groove portions 56 of the groove pile 5, respectively, so that the surface 6A facing the H-shaped steel pile 2 is You may use what is inclined in the same direction with respect to the driving direction of a pile. Furthermore, as another form, as shown in FIG. 10, a second fastener 8 having an elongated shape is provided on the groove surface of the flanges 51 and 52 of the groove member. It is also possible to use one whose longitudinal direction is directed toward the open surface side of the groove.

Next, an embodiment relating to continuous piles using a plurality of H-shaped steel piles instead of channel piles will be described.

FIG. 12 illustrates another embodiment of a continuous pile according to the present invention with a perspective view from the upper surface direction. A first H-shaped steel pile 2 having a web portion 23 that connects the flange portions at the center thereof, and a second H-shaped steel pile 2 having a pair of flange portions 31, 32 and a web portion 33 that connects the pair of flange portions at the center. The flange portion 21 of the first H-shaped steel pile 2 is placed in the groove portion 36 surrounded by the flange portions 31, 32 and the web portion 33 of the second H-shaped steel pile 3. , 22 are arranged so as to be substantially parallel to the web portion 33 of the second H-shaped steel pile 3, and the groove portion 36 side of the flange portions 31 and 32 of the second H-shaped steel pile 3 For example, a pair of fixtures 6 are provided at a position S separated from the web portion 33 by the width of the flange portion 21 of the first H-shaped steel pile 2 or more.

The first and second H-shaped steel piles 2, 3 have a pair of flanges (21, 22) (31, 32) and webs (23) (33) connecting the pair of flanges, A commercially available product can be used. However, in the present invention, a plurality of H-shaped steel piles 2 and 3 are combined to form a continuous pile, and the H-shaped steel piles to be combined are different in size and shape (for example, the first H-shaped steel pile). The steel pile 2 is characterized by using a flange portion x web portion of 100 mm x 200 mm, and the second H-shaped steel pile 3 is 125 mm x 125 mm, etc.).

Specifically, as the first H-section steel pile 2, the lengths of the flange portions 21 and 22 are shorter than the web portion 33 of the second H-section steel pile, and the length of the web portion 23 is the second length. Those longer than the flange portions 31 and 32 of the H-shaped steel pile 3 are used.

Thus, by using the length of the flange portions 21 and 22 of the first H-section steel pile shorter than the length of the web portion 33 of the second H-section steel pile, the length of the second H-section steel pile It becomes possible to arrange the flange portions 21 and 22 of the first H-shaped steel pile in the vicinity of the web portion 33 . That is, as shown in FIG. 12, it is possible to arrange the flange portions 21 and 22 of the first H-section steel pile into the inside of the second H-section steel pile 3. Unlike the conventional structure in which the gap is connected by a horizontal sheet pile or the like, the web portion 23 of the first H-shaped steel pile will play the role of the conventional horizontal sheet pile, and the first The strength of the web portion 23 of the H-shaped steel pile is higher, and the strength of the entire continuous pile increases. Furthermore, by using the H-shaped steel pile instead of the horizontal sheet pile, the flange portion 21 of the first H-shaped steel pile enters between the flange portions 31 and 32 of the second H-shaped steel pile. Therefore, against the pressure of earth and sand on the wall surface, not only the effect of suppressing the pressure by the flange portion of the second H-shaped steel pile 3, but also the first H-shaped steel pile by the second H-shaped steel pile 3 is fixed, the fixing of the first H-shaped steel pile 2 is further strengthened, and as a result, an extremely strong continuous pile can be constructed.

In addition, the closer the flange portion 21 of the first H-section steel pile to the web portion 33 of the second H-section steel pile, the closer the first H-section steel pile 2 and the second H-section steel There is no gap between the piles 3, and the first H-shaped steel pile 2 and the second H-shaped steel pile 3 can be naturally fixed at their respective positions without using separate connecting means. Further, if the first H-shaped steel pile 2 and the second H-shaped steel pile 3 are placed in close proximity and their upper portions are fixed by welding or the like, the continuous piles are fixed more firmly.

On the other hand, by using a length of the web portion 23 of the first H-section steel pile that is longer than the flange portion 31 of the second H-section steel pile, the flange portions 31 of the second H-section steel pile are closer to each other. , while preventing contact between the second H-shaped steel piles 3, the web portion 23 can constitute a wall that replaces the horizontal sheet pile. The length of the web portion 23 of the first H-shaped steel pile is not particularly limited, but if it exceeds five times the length of the flange portion 31 of the second H-shaped steel pile, the arrangement balance is poor. Since there is a possibility that the function as a wall may deteriorate, it is more preferable to be up to about 5 times.

The second H-section steel pile 3, as shown in the perspective view of FIG. For example, a pair of fixtures 6 are provided at a position S separated by a width of the flange portion 21 or more of the H-shaped steel pile.

As shown in FIGS. 12 and 13, the fixture 6 is provided at least on the upper and/or lower ends of the flanges 31 and 32 on the side of the groove 36 to prevent the pile from bending and driving. Moreover, it is more desirable from the viewpoint that it is possible to further prevent the continuous pile from being destroyed. That is, if the fixture 6 is provided at the upper ends of the flange portions 31 and 32 of the second H-section steel pile, the first H-section steel pile is placed in the vicinity of the second H-section steel pile 3 that has already been driven. 2, using the fixture 6 provided at the upper end of the groove 36 side of the flanges 31 and 32 of the second H-shaped steel pile that has been placed as a mark, the fixture 6 and the second The flange portion 21 of the first H-section steel pile 2 can be arranged between the web portions 33 of the two H-section steel piles, and the H-section steel pile 2 can be driven at a desired position without being displaced. becomes possible. On the other hand, if a fixture is provided at the lower end of the groove 36 side of the flanges 31 and 32 of the second H-section steel pile, another When driving the second H-shaped steel pile 3, the fixture 6 provided at the lower end of the groove 36 surface side of the flanges 31 and 32 of another second H-shaped steel pile before driving can be placed between the fixture 6 and the web portion 33 of the second H-section steel pile. It is possible to drive another second H-shaped steel pile 3 at a desired position.

The shape of the fixture 6 is arbitrary, but for example, it may be an elongated rectangular parallelepiped shape as shown in FIG. Install facing the 6(b), 6(c) and 6(d) in side view, it may be triangular, trapezoidal, or elongated with a partial fan shape. When using , the surface 6A side of the inclined side is installed toward the web portion side of the adjacent H-section steel pile. In addition, a cubic member may be used instead of the elongated shape.

Moreover, as shown in FIG. 14, the fixture 6 can also be provided in a shape continuous from the upper end to the lower end of the groove 36 side of the flanges 31 and 32 of the second H-shaped steel pile. If the fixture 6 is continuously provided from the upper end to the lower end of the flanges 31 and 32 of the second H-shaped steel pile, the area for welding the fixture 6 to the flanges 31 and 32 increases, which increases the labor. However, since the fixture 6 is formed continuously in the driving direction of the first H-shaped steel pile 2, the positioning of the first H-shaped steel pile 2 becomes easier, and the first and the first It is possible to further prevent the H-shaped steel pile of 2 from being bent and driven, and the connection between the piles is also formed through a stronger fixture, so the connection between the piles itself becomes even stronger. It is also possible to further prevent the continuous piles from being broken due to disconnection of the continuous piles due to external pressure.

Furthermore, as shown in FIG. 15, the fixture 6 has a surface 6A that faces the first H-shaped steel pile 2 driven at a position adjacent to the second H-shaped steel pile 3 and faces the pile driving direction. From the viewpoint of smoother connection between piles, it is desirable to use ones that are inclined with respect to. That is, the second H-shaped steel pile 3 and the first H-shaped steel pile 2 are alternately driven to form a continuous pile, and the second H-shaped steel pile 3 is installed in the groove 36 provided in the second H-shaped steel pile 3. The flange portion 21 of the H-section steel pile 2 of No. 1 is arranged, but the fixture 6 provided on the second H-section steel pile 3 is attached to the first H-section steel that is driven adjacently. A surface 6A (opposite surface of 6B) facing the pile 2 is inclined with respect to the driving direction of the pile. For example, as shown in FIG. 6(a), when the fixture 6 itself has a structure like an elongated rectangular parallelepiped, the vertical surface (longitudinal surface) is slanted from the driving direction of the pile. 6(b), 6(c), and 6(d), the first H-section steel pile on which the inclined surface is driven when the fixture has a structure such as a slanted elongated shape Place it so that it faces the face opposite to 2.

If you try to install a fixture at a position close to the web part 33 of the second H-shaped steel pile, the distance to the web part is short and it is difficult to perform the welding work completely. At a position away from the web portion 33 of the second H-shaped steel pile, the distance from the web portion makes it easy to perform welding work, and the fixture is firmly fixed to the flange portion. In addition, by inclining the fixture, it is possible to increase the resistance surface against external pressure, and the fixture becomes stronger.

As shown in FIGS. 13 to 15, when the fixtures 6 are provided in pairs on the flanges 31 and 32 of the two grooves 36, the respective fixtures are provided as shown in FIG. Moreover, it is more desirable that the surface facing the first H-shaped steel pile 2 is inclined in the same direction as the driving direction of the pile (in FIG. 15, it is inclined to the right of the groove surface). That is, by adopting such a configuration, when driving the first H-shaped steel pile 2 next to the second H-shaped steel pile 3, the second H-shaped steel pile 3 can be placed next to the first When the H-shaped steel pile 2 is driven horizontally, the pile can be inserted smoothly because the pile is inclined with respect to the direction in which it is easy to insert with respect to the driving method.

That is, when driving the first H-shaped steel pile 2 near the second H-shaped steel pile 3 that has already been driven, the flange portion 31 of the second H-shaped steel pile 3 that has been driven , 32 on the upper end of the groove 36 side, the first H-section steel pile 2 is driven using the fixture 6 as a mark. In this case, the first H-section steel Since the pile 2 is driven from above, the groove 36 into which the first H-shaped steel pile 2 is inserted has a structure inclined so as to open upward (the groove member on the left side in FIG. 15). , the first H-shaped steel pile 2 can be easily inserted. On the other hand, when driving the second H-shaped steel pile 3 in the vicinity of the already driven first H-shaped steel pile 2, the other second H-shaped steel pile 3 becomes the first H-shaped pile. Since the steel pile 2 is driven from above, if the structure is inclined so that the groove 36 is opened downward (the grooved member on the right side in FIG. 9), the first already driven It becomes difficult to interfere with the H-shaped steel pile 2, and the second H-shaped steel pile 3 can be easily inserted.

Furthermore, in addition to the upper and/or lower end fixtures, a second fixture 8 is provided between the upper end and lower end of the groove 36 surface of the flanges 31 and 32 of the second H-shaped steel pile. In this case, the second fixture 8 has an elongated shape and is arranged on the side of the groove 36 of the flanges 31 and 32 of the second H-shaped steel pile with its longitudinal direction facing the open side of the groove 36. It is more desirable to be For example, as shown in FIG. 16, the first fixtures 6 at the upper and lower ends are inclined from the driving direction of the pile, while the second fixtures 8 are A plurality of elongated rectangular parallelepipeds are provided, and the longitudinal direction of the elongated shape of each second fixture is arranged toward the open surface side of the groove 36 (arranged at a position where the longitudinal direction of the rectangular parallelepiped shape is horizontal). be. In addition, the second fixture 8 has not only a rectangular parallelepiped shape but also a triangular, trapezoidal, and partially rectangular parallelepiped shape when viewed from the side as shown in FIGS. It may be an elongated shape having a fan shape, etc. When using such an elongated shape, it is installed so that the 6A side is the upper surface side.

When the fixtures 6 and 8 are formed so that the longitudinal direction (longitudinal portion) of the elongated shape is the vertical direction (the direction in which the pile is driven), they are provided at a narrow position close to the web portion of the second H-beam steel pile. Since the work space is narrow and the welding work is difficult, the strength cannot be completely welded and connected, which may reduce the strength. On the other hand, if the elongated shape is formed so that the longitudinal direction (longitudinal portion) is in the lateral direction (the direction toward the open surface side of the groove), such a problem does not occur and the fixture can be firmly adhered. For this reason, it is preferable to give priority to the ease of insertion of the fixtures 6 provided at the upper end and the lower end, which serve as marks at the time of placing, even if the strength is somewhat sacrificed. Although it is ideal, the second fixture 8 in the portion other than the lower end and the upper end should be oriented so that the longitudinal direction (longitudinal portion) of the elongated shape is the horizontal direction (the direction toward the open surface side of the groove), giving priority to strength. ).

As described above, by providing fixtures of various shapes at various positions of the second H-shaped steel piles 3 that constitute the continuous pile, it is possible to form a continuous pile that is stronger and free from misalignment.

Next, the method of forming a continuous pile using a plurality of H-shaped steel piles of the present invention will be described. Using the driving device 1, the second H-shaped steel pile 3 is erected, buried to a desired position in the ground, and the first H-shaped steel pile is placed at a position close to the second H-shaped steel pile 3. 2 is driven, and another second H-shaped steel pile 3 is placed at a position opposite to the already driven second H-shaped steel pile 3 at a position close to the first H-shaped steel pile 2. The second H-shaped steel pile 3 and the first H-shaped steel pile 2 are repeatedly driven alternately, and a plurality of H-shaped steel piles are driven at desired positions in the ground to form a continuous pile. to form

More specifically, it is carried out in the following steps.

A mark is made on the ground at a position where a continuous pile consisting of a plurality of H-shaped steel piles 2 and 3 is to be buried, and a groove is dug at the positioned place (planned burial position) using human power or a mini excavator. In addition, if the ground at the position where the continuous pile is to be buried is strong, advance excavation is performed on the ground at the planned burial position. Incidentally, the pre-drilling can be performed by the same method as described in the above-described embodiments.

Next, the placing device 1 having a function of placing an object by striking a weight is placed on the ground near the planned burial position. In a narrow site, a large power unit cannot be used to install a series of piles. On the other hand, when burying a series of piles, it is necessary to use a driving device that has a function of driving an object by a method of striking a weight with a strong impact force even though it is small. As for the placing device, the one described in the previous embodiment is used.

Next, in the vicinity of the planned burial position, using the driving device 1 or a device different from the driving device 1, the second H-shaped steel pile 3 shown in FIG. Move it to the planned position and erect it on the ground. The second H-shaped steel pile 3 can be lifted using the hook 104 of the driving device 1 or the like.

After the second H-shaped steel pile 3 is erected at the planned burying position, the boom 11 of the driving device 1 is operated and moved so as to come into contact with the upper portion of the second H-shaped steel pile 3 . After confirming that the cushioning member 17 and the protective attachment 18 are positioned at the center of the upper portion of the second H-shaped steel pile 3 and are in contact with each other, the driving device 1 is operated to wind up the wire 103, thereby removing the weight. 107 is pulled up, and the operator manually pulls the rope 105 downward, so that the weight 107 comes off the hook 104 of the lifting device 106, the weight 107 falls downward, and the second H-shaped steel pile 3 is impacted. and cast. By repeating this work and moving the weight 107 up and down many times, the impact force is repeatedly applied to the second H-shaped steel pile 3 from above, and the second H-shaped steel pile 3 is moved to a desired position in the ground. Embed up to

When the second H-shaped steel pile 3 is completely buried in the ground, the driving device 1 having the function of driving the object by hitting the weight as shown in FIG. 17 is used again. , As shown in FIG. 12, one flange portion of the first H-shaped steel pile 2 is placed in a groove 36 surrounded by a pair of flange portions and a web portion of the second H-shaped steel pile 3 that has been driven. 21 is substantially parallel to the web portion 33 of the second H-section steel pile 3, the first H-section steel pile 2 is driven.

Specifically, similarly to the driving of the second H-shaped steel pile 3, the driving device 1 or a device different from the driving device 1 is used to lift the first H-shaped steel pile 2, The H-shaped steel pile 2 of 1 is moved to the planned burying position. As shown in FIG. 12, the first H-section steel pile 2 is embedded in the area surrounded by the flanges 31, 32 and the web section 33 of the second H-section steel pile that has already been driven. The flange portion 21 of the first H-shaped steel pile 2 is completely accommodated in a certain groove portion 36, and the one flange portion 21 of the first H-shaped steel pile 2 is the second H-shaped steel pile. The first H-shaped steel pile 2 is set in the ground after adjusting to the position substantially parallel to the web portion 33 of the first H-shaped steel pile. After erecting the first H-shaped steel pile 2, the weight 107 is lifted up and down many times by the same method as driving the second H-shaped steel pile 3, and a striking force is repeatedly applied from above, The first H-shaped steel pile 2 is embedded to a desired position in the ground. After that, the upper portions of the first H-shaped steel pile 2 and the second H-shaped steel pile 3 can be fixed by welding or the like, and in this case, the connection becomes stronger.

In addition, since the second H-shaped steel pile 3 is provided with a fixture 6 as shown in FIG. 13, the groove of the already driven second H-shaped steel pile After adjusting the position so that the flange portion 21 of the first H-shaped steel pile is arranged between the fixture 6 in 36 and the web portion 33 of the second H-shaped steel pile 3, the first H-shaped The steel pile 2 is erected in the ground and driven by the same method to embed the first H-shaped steel pile 2 to a desired position in the ground. By using the second H-shaped steel pile 3 provided with the fixture 6 in this way, when driving the first H-shaped steel pile 2 in the groove 36, the first H-shaped steel pile is , as shown in FIG. 12, it is arranged in a region surrounded on all four sides by the fixture 6, the web portion 33 of the second H-shaped steel pile 3, and the pair of flanges 31, 32, so that the position does not shift. , the first H-section steel pile 2 can be prevented from being bent and driven. Furthermore, since it is structured to surround the first H-shaped steel pile 2 from all four sides, it is possible to prevent the continuous pile from being disconnected and destroyed by external pressure. become.

When the first H-shaped steel pile 2 is completely buried in the ground, the driving device 1 or the like is used again to set the other flange portion 22 of the first H-shaped steel pile 2 that has already been driven. Another second H-shaped steel pile 3 is driven at a position substantially parallel to the web portion 33 in the groove portion 36 surrounded by the flange portion and the web portion.

Specifically, in the same manner as in the previous driving, the driving device 1 or a device different from the driving device 1 is used to lift another second H-shaped steel pile 3 and another second H-shaped steel pile 3 is moved to the planned burial position. The driving position of another second H-shaped steel pile 3 is such that the flange portion 22 opposite to the flange portion 21 of the first H-shaped steel pile that has already been driven is another Another second H so that it fits completely in the area surrounded by the web portion 33 and the flange portions 31 and 32 of the H-shaped steel pile of No. 2 and is positioned substantially parallel to the web portion 33 A shaped steel pile 3 is placed and built into the ground at the position. After erecting another second H-shaped steel pile 3, the weight 107 is lifted up and down many times by the same method as before, and a striking force is repeatedly applied from above, and another second H-shaped steel pile is applied. The pile 3 is embedded up to a desired position in the ground. After that, the upper portions of the first H-shaped steel pile 2 and another second H-shaped steel pile 3 can be fixed by welding or the like.

In addition, as another second H-shaped steel pile 3 to be newly driven in the vicinity of the first H-shaped steel pile 2, since the one provided with the fixture 6 is used, another second H-shaped steel pile 3 After adjusting the position so that the other flange portion 22 of the first H-section steel pile is arranged between the fixture 6 and the web portion 33 in the groove portion 36 of the section steel pile 3, the second H-section steel pile 3 is erected in the ground and driven by the same method to embed the second H-shaped steel pile 3 to a desired position in the ground. By using a fixture provided with a fixture in this way, it is arranged so as to surround the area surrounded by four sides by the fixture, the web portion of the channel member, and the pair of flanges in the same manner as described above. Therefore, the position of the second H-shaped steel pile 3 itself does not shift, it is possible to prevent it from being bent and driven, and a continuous pile that is strong against external pressure is formed. can be done.

Furthermore, in a similar manner, another groove portion 36, which is an area surrounded by the web portion 33 and the flange portions 31 and 32, is closed to the second H-shaped steel pile 3 that was driven immediately before. At a position where the flange portion 21 of the first H-shaped steel pile 2 is completely accommodated, one flange portion 21 of the first H-shaped steel pile 2 is driven at a position where it is substantially parallel to the web portion 33, etc. By repeating alternate driving of the second H-shaped steel pile 3 and the first H-shaped steel pile 2, a wide continuous pile is formed.

In the above embodiment, after driving the second H-shaped steel pile 3, the first H-shaped steel pile 2 is driven, and then the second H-shaped steel pile 3 is driven. As explained above, the first H-shaped steel pile 2 is driven first, the second H-shaped steel pile 3 is driven at a position close to the first H-shaped steel pile 2, and the first H-shaped steel pile 2 is driven. The H-shaped steel pile 2 may be driven. In the present invention, it is meaningful to drive the first H-shaped steel pile 2 and the second H-shaped steel pile 3 alternately, and the order of driving the piles does not matter.

In addition, as shown in FIGS. 6 and 11 to 15, the fixture 6 of the second H-shaped steel pile 3 is attached to at least the upper and lower ends of the flanges 31 and 32 on the side of the groove 36 surface. provided, or provided in a shape continuous from the upper end to the lower end of the groove portion 36 side of the flange portions 31 and 32, or the surface 6A facing the first H-shaped steel pile 2 may be used. It is provided on the flange portions 31 and 32 of the two groove portions 36 of the second H-shaped steel pile 3, and is opposite to the first H-shaped steel pile 2. A surface 6A that is inclined in the same direction as the driving direction of the pile may be used. Furthermore, as another form, as shown in FIG. 16, a second fastener 8 having an elongated shape is provided on the surface of the groove 36 of the flanges 31 and 32 of the second H-shaped steel pile. The fixture 8 may be arranged so that its longitudinal direction faces the open surface side of the groove.

In each of the above-described embodiments, in driving an H-shaped steel pile or a grooved pile using the driving device 1, the driving device 1 is operated to wind up the wire 103 to lift the weight 107, and then the work is performed. When a person manually pulls the rope 105 downward, the weight 107 is released from the hook 104 of the lifting device 106, the weight 107 falls downward, and the H-shaped steel pile or steel pipe pile is driven by a method that impacts. However, the rope 105 provided on the lifting device 106 can be fixed to the outrigger 12 of the driving device 1, another part of the driving device, other devices on the site, or other fixed positions such as the ground. By fixing using technology, the weight 107 is automatically moved up and down many times without pulling the rope 105 by human power, and the H-shaped steel pile and the groove pile are repeatedly hit from above. It is also possible to embed H-shaped steel piles and channel piles to desired positions in the ground.

When driving an H-shaped steel pile or a grooved pile using the driving device 1, a metal protection attachment 18 may be connected to the upper end of the pile to protect the pile. However, the shape of the protective attachment 18 is not particularly limited, and an existing one may be used. Further, when driving the pile, it is also possible to interpose the cushioning member 17 between the weight 107 and the protective attachment 18 when driving. Every time the weight 107 collides with the upper part of the protection attachment 18, the iron material of the protection attachment 18 and the iron material of the weight 107 collide violently, resulting in large noise and vibration. , the generated large noise and vibration can be reduced, and the protective attachment and the pile material can be protected. The cushioning member 17 has, for example, a donut shape in which a wire rope is wound around the outer circumference. A thick wire rope is formed into a circle as a core material, bound with a material such as lead, and a plate-shaped rubber is wound around the outer circumference. Further, a shape in which a wire rope is wound around the outer periphery thereof may be considered, but it is not limited to this configuration.

The present invention is not limited to the above-described embodiments, and the technical scope of the claims includes various design modifications within the scope of the invention.

1 Driving device 2 First H-shaped steel pile 3 Second H-shaped steel pile 5 Channel pile 6 (First) fixture 8 Second fixture 10 Driving tool 11 Boom 12 Outrigger 17 Buffer member 18 Protective attachment 21 Flange portion 22 of (first) H-section steel pile Flange portion 23 of (first) H-section steel pile Web portion 31 of (first) H-section steel pile Web portion 31 of second H-section steel pile Flange portion 32 Flange portion 33 of second H-section steel pile Web portion 36 of second H-section steel pile Groove portion 51 of second H-section steel pile Flange portion 52 of channel member Flange portion 53 of channel member Groove Shape member web portion 54 Channel member 55 Base member 56 Channel member groove 101 Setting tool connection device 102 Iron bar 103 Wire 104 Hook 105 Rope 106 Lifting device 107 Weight 108 Hook metal fitting 541 Channel steel 542 Angle steel
551 Iron plate 552 H-shaped member

Claims (24)

An H-shaped steel pile having a pair of flange portions and a web portion connecting the pair of flange portions at their centers, and a channel member having a pair of flange portions and a web portion connecting the pair of flange portions at their ends. A series of piles alternately arranged with grooved piles connected to both ends of a member,
The flange portion of the H-shaped steel pile is arranged in a groove surrounded by a pair of flange portions and web portions of the channel member so as to be substantially parallel to the web portion of the channel member. consecutive piles. 2. The continuous pile according to claim 1, wherein said base member is an H-shaped member made of H-shaped steel. The channel-shaped member is composed of a flange portion of the H-shaped member and a pair of angle irons provided on the side of the flange portion that is not connected to the web portion of the H-shaped member. The continuous pile according to claim 2. 4. The continuous pile according to any one of claims 1 to 3, wherein the interval between the pair of flange portions of the channel member is constructed so as to narrow toward the web portion of the channel member. . A fixture is provided on the groove surface side of the pair of flanges of the channel member and at a position separated from the web portion of the channel member by a width of the flange portion of the H-shaped steel pile or more. The continuous pile according to any one of claims 1 to 4. 6. The continuous pile according to claim 5, wherein the fixture is provided in a continuous shape from the upper end portion to the lower end portion of the groove surface side of the flange portion of the channel member. 6. The continuous pile according to claim 5, wherein said fixture is provided at least on the upper end and/or lower end of said flange portion of said channel member on the side of said channel surface. 8. The continuous pile according to claim 7, wherein the fixture has a surface facing the H-shaped steel pile inclined with respect to the driving direction of the pile. The fixtures are provided on the flanges of the channel member on the two groove surfaces of the channel pile, respectively, and the surfaces facing the H-shaped steel pile are inclined in the same direction with respect to the driving direction of the pile. The continuous pile according to claim 8, characterized in that: A second fastener having an elongated shape is further provided on the groove surface of the flange portion of the groove member, and the longitudinal direction of the second fastener is arranged toward the open surface side of the groove. The continuous pile according to any one of claims 7 to 9. A channel-shaped member having a pair of flanges and a web connecting the pair of flanges at their ends is formed into a base member using a placing device having a function of placing an object by striking a weight. It is a continuous pile formation method in which a channel pile connected to both ends and an H-shaped steel pile having a pair of flange portions and a web portion connecting the pair of flange portions at the center are alternately driven into the ground. hand,
(1) Driving a grooved pile into the ground,
(2) One flange portion of the H-shaped steel pile is substantially parallel to the web portion of the channel member in the groove portion surrounded by the pair of flange portions and the web portion of the channel member of the driven channel pile. At the position where the H-shaped steel pile is driven,
(3) Another channel pile at a position where the other flange portion of the H-section steel is substantially parallel to the web portion of the channel member in the channel surrounded by the pair of flange portions and web portion of the channel member to cast the
A continuous pile forming method characterized by: As the channel pile, a fixture is provided on the channel surface side of the flange portion of the channel member and at a position separated from the web portion of the channel member by at least the width of the flange portion of the H-shaped steel pile. 12. The method of forming a continuous pile according to claim 11, wherein the continuous pile is formed by using 13. In the above (2), the H-shaped steel pile is placed and driven between the fixture in the groove of the grooved pile and the web portion of the grooved member of the grooved pile. The continuous pile formation method. In (3) above, the other channel pile is arranged so that the H-beam steel pile is arranged between the fixture in the channel of the other channel pile and the web portion of the channel member of the other channel pile. 13. The continuous pile forming method according to claim 12, wherein A first H-shaped steel pile having a pair of flange portions and a web portion connecting the pair of flange portions at their centers, and a second H-shaped steel pile having a pair of flange portions and a web portion connecting the pair of flange portions at their centers. H-shaped steel piles are alternately arranged, and the flange part of the first H-shaped steel pile is placed in the groove part surrounded by the flange part and the web part of the second H-shaped steel pile. A continuous pile arranged so as to be substantially parallel to the web portion of a shaped steel pile,
Fixed on the groove surface side of the flange portion of the second H-section steel pile and at a position spaced apart from the web portion of the second H-section steel pile by at least the width of the flange portion of the first H-section steel pile. A continuous pile characterized by having a tool. 16. The continuous pile according to claim 15, wherein the fixture is provided in a continuous shape from the upper end to the lower end of the groove surface side of the flange portion of the second H-shaped steel pile. 16. The continuous pile according to claim 15, wherein the fixture is provided at least on the upper end and/or the lower end of the groove surface side of the flange portion of the second H-shaped steel pile. 18. The continuous pile according to claim 17, wherein the fixture has a surface facing the first H-shaped steel pile inclined with respect to the driving direction of the pile. The fixtures are provided on the flange portions of the H-section steel of the two grooved surfaces of the second H-section steel pile, respectively, and the surface facing the first H-section steel pile is positioned with respect to the driving direction of the pile. 19. The continuous pile according to claim 18, wherein the piles are slanted in the same direction. A second fixture having an elongated shape is further provided on the groove surface of the flange of the second H-shaped steel pile, and the longitudinal direction of the second fixture is arranged toward the open surface side of the groove. The continuous pile according to any one of claims 17 to 19, characterized by: A first H-section steel pile having a pair of flanges and a web connecting the pair of flanges at their centers using a driving device capable of driving an object by striking a weight A continuous pile forming method for alternately driving into the ground a pair of flange portions and a second H-shaped steel pile having a web portion connecting the pair of flange portions at their centers,
(1) Drive the first H-shaped steel pile into the ground,
(2) In a groove surrounded by a pair of flange portions and web portions of the driven first H-section steel pile, one flange portion of the second H-section steel pile Driving a second H-shaped steel pile at a position substantially parallel to the web of the pile,
(3) The other first flange portion of the second H-section steel is positioned substantially parallel to the web portion of the H-section steel pile in the groove portion surrounded by the pair of flange portions and the web portion. to drive the H-shaped steel pile of
A continuous pile forming method characterized by: As the second H-shaped steel pile, a fixture is provided on the groove surface side of the flange and at a position separated from the web by at least the width of the flange of the first H-shaped steel pile. 22. The method of forming a continuous pile according to claim 21, wherein the continuous pile is formed. In the above (2), placing and driving the first H-section steel pile between the fixture in the groove of the second H-section steel pile and the web section of the second H-section steel pile. 23. The method of forming a continuous pile according to claim 22. In (3) above, the first H-section steel pile is arranged between the fixture in the groove of the other second H-section steel pile and the web portion of the second H-section steel pile. 24. The method of forming a continuous pile according to claim 23, wherein another second H-shaped steel pile is driven into the pile.

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