JP6905646B1 - Pile and its formation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide piles and grooves made of H-shaped steel used as a retaining wall, a retaining wall, and a wall for reinforcing the mountain retaining wall, a retaining wall, and a wall for reinforcing the mountain retaining wall, a retaining wall, and the like, for the purpose of stopping water and preventing cliff collapse at a site where large vehicles are difficult to enter, such as in the mountains and residential areas. It is an object of the present invention to provide a continuous pile in which a shaped member is combined with a grooved pile provided at both ends, a continuous pile in which a pile composed of a plurality of H-shaped steel piles is combined, and a method for forming them. SOLUTION: An H-shaped steel pile 2 having a web portion 23 connecting a pair of flange portions 21 and 22 and a pair of flange portions 21 and 22 at the center thereof, a pair of flange portions 51 and 52 and the pair of flange portions 51. , 52 is a continuous pile in which a groove-shaped member 54 having a web portion 53 connecting the ends is alternately arranged with a groove-shaped pile 5 provided at both ends of the base member 55, and a pair of flange portions of the groove-shaped member. Flange portions 21 and 22 of the H-shaped steel pile 2 are arranged in the groove portion 56 surrounded by the web portions 53 of 51 and 52 so as to be substantially parallel to the web portion 53 of the groove-shaped member to form a continuous pile. .. [Selection diagram] Fig. 1

Description

The present invention is a continuous pile in which a pile made of H-shaped steel used as a retaining wall, a retaining wall, and a wall for reinforcing the pile and a groove-shaped pile in which groove-shaped members are connected at both ends are combined, and a plurality of H-shaped steels. It relates to a series of piles made by combining piles made of piles and a method of forming them.

Conventionally, in agricultural ponds and the like, steel sheet piles and the like have been used as wall piles for mountain retaining in order to prevent the ponds from collapsing in the event of a disaster such as heavy rain (Patent Document 1). The wall piles are usually formed by using a rotary press-fitting method of piles using a large motor, a method of press-fitting steel sheet piles using a large pile driving device such as an auger using a leader, and the like. Further, in a site where the work place is wide, piles made of H-shaped steel are arranged at regular intervals instead of steel sheet piles, and these are used as parent piles, and a plurality of horizontally long horizontal sheet piles are interposed between them. Is also fitted and a wall is formed by filling the gap between the piles with a horizontal sheet pile (Patent Document 2).

Jinkai Akira 64-47841 JP 2016-204834

As a measure to stop water on a wide flat ground, a large pile driving device can be used to drive a large and wide steel sheet pile or the like around the pond to take sufficient measures to stop water. However, at sites such as agricultural ponds deep in the mountains, there are often no roads for carrying construction vehicles to the site, and even if there are roads for carrying construction vehicles. Since the road is narrow and the site itself is narrow, it is a special site in the mountains, so large vehicles such as large pile driving devices and large equipment required for construction cannot be carried in. Therefore, at the site in the mountains, the pile driving device itself must be small and light in weight. Furthermore, even when piles are used to reinforce the retaining wall in a house, there are many places where it is difficult for large vehicles to enter the site, and in such cases, it is necessary to use a small and light weight one. do not have.

Further, in the driving of steel sheet piles, if a small and light vehicle is used as a pile driving device, the driving force is weak and it is not possible to drive a large and wide steel sheet pile. Therefore, it is conceivable to use a small and thin steel sheet pile such as a trench pile, but since the small steel sheet pile is a thin sheet with no thickness, it is vulnerable to external pressure and can be used as a strong wall for retaining walls or retaining walls. There was a problem that it could not be used.

Furthermore, instead of a continuous wall in which only small steel sheet piles are connected, piles made of high-strength H-shaped steel are placed at regular intervals and used as parent piles, and a plurality of horizontally long horizontal sheet piles are placed between them. It is also considered to connect a pile made of H-shaped steel and a horizontal sheet pile via a joint to form a wall for mountain retaining or a retaining wall, but even in this case, the horizontal sheet pile itself is Since it is made of steel and is a thin plate, its strength is weak, and there is also a problem that it breaks from the horizontal sheet pile due to natural disasters such as heavy rain and typhoons. In addition, there is also a problem that such a horizontal sheet pile method cannot be implemented unless the site is large.

In view of the above points, H Provided are a continuous pile combining a pile made of shaped steel and a grooved pile having channel members provided at both ends, a continuous pile 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, a pair of flange portions and the pair of flange portions. It is a continuous pile in which groove-shaped members having a web portion connecting the ends thereof are alternately arranged with groove-shaped piles connected to both ends of the foundation member, and the pair of flange portions and the web portion of the groove-shaped member are formed. The flange portion of the H-shaped steel pile is arranged in the enclosed groove portion so as to be substantially parallel to the web portion of the groove-shaped member.

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

In the continuous pile according to the present invention, the groove-shaped member is made of a flange portion of the H-shaped member and a pair of angle steels provided on the flange portion surface side on the side where the groove-shaped member is not connected to the web portion of the H-shaped member. It is characterized by being composed.

The continuous pile according to the present invention is characterized in that the distance between the pair of flange portions of the groove-shaped member is narrowed toward the web portion of the groove-shaped member.

The continuous pile according to the present invention is a fixture at a position on the groove surface side of a pair of flange portions of the channel member and at a position separated from the web portion of the groove member by a width equal to or larger than the width of the flange portion of the H-shaped steel pile. Is provided.

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

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

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 pile driving direction.

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

The continuous pile according to the present invention further includes a second fixture having an elongated shape on the groove surface of the flange portion of the groove-shaped member, and the second fixture is arranged so that the longitudinal direction of the second fixture faces the open surface side of the groove portion. It is characterized by being done.

In the continuous pile forming method according to the present invention, a web portion connecting a pair of flange portions and the pair of flange portions at their ends by using a driving device having a function of driving an object by a method of striking a weight. A channel pile in which the channel members having the above are connected to both ends of the foundation member, and an H-shaped steel pile having a web portion connecting the pair of flange portions and the pair of flange portions at the center thereof are alternately placed in the ground. It is a method of forming a continuous pile to be driven, in which (1) a grooved pile is driven into the ground, and (2) the grooved member of the grooved pile is surrounded by a pair of flanges and a web portion. The H-shaped steel pile is placed at a position where one flange portion of the H-shaped steel pile is substantially parallel to the web portion of the channel-shaped member in the grooved portion, and (3) the other flange of the H-shaped steel pile is placed. Another feature is that another groove-shaped pile is driven at a position where the portion is substantially parallel to the web portion of the groove-shaped member in the groove portion surrounded by the pair of flange portions of the groove-shaped member and the web portion.

In the method for forming a continuous pile according to the present invention, the grooved pile is located on the groove surface side of the flange portion of the grooved member at a position separated from the web portion of the grooved member by the width of the flange portion of the H-shaped steel pile or more. It is characterized in that a continuous pile is formed by using a fixture provided with a fixture.

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

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

The continuous pile according to the present invention connects a first H-section 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 at the center thereof. The second H-shaped steel pile having the web portion is alternately arranged, and the flange portion of the first H-shaped steel pile is placed in the groove portion surrounded by the flange portion and the web portion of the second H-shaped steel pile. It is a continuous pile in which the portion is arranged so as to be substantially parallel to the web portion of the second H-shaped steel pile, and is on the groove surface side of the flange portion of the second H-shaped steel pile. The fixture is provided at a position separated from the web portion of the H-shaped steel by the width of the flange portion of the first H-shaped steel pile or more.

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 on the groove surface side of the flange portion 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 at the upper end portion and \ or the lower end portion of the flange portion of the second H-shaped steel pile on the groove surface side.

The continuous pile according to the present invention is characterized in that the surface of the fixture facing 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 fixture is provided on the flange portion of the H-shaped steel on the two groove surfaces of the second H-shaped steel pile, and the surface facing the first H-shaped steel pile is a pile. It is characterized in that it is inclined in the same direction as the casting direction of.

The continuous pile according to the present invention further includes a second fixture 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 fixture is on the open surface side of the groove portion. It is characterized in that it is arranged toward.

The continuous pile forming method according to the present invention uses a driving device having a function of driving an object by a method of striking a weight to connect a pair of flange portions and a web portion connecting the pair of flange portions at the center thereof. A method for forming a continuous pile in which a first H-shaped steel pile having a first H-shaped steel pile 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) The first H-section steel pile is driven into the ground, and (2) the groove portion surrounded by the pair of flange portions and the web portion of the first H-section steel pile that has been driven. The second H-section steel pile is driven 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. The other 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 portion surrounded by the pair of flange portions and the web portion. It is characterized by placing.

In the continuous pile forming method according to the present invention, as the second H-shaped steel pile, the fixture is located on the groove surface side of the flange portion and at a position separated from the web portion by the width of the flange portion of the first H-shaped steel pile or more. It is characterized in that it is cast using the one provided with.

In the method for forming a continuous pile according to the present invention, in the above (2), the first H-shaped steel pile is formed between the fixture in the groove portion of the second H-shaped steel pile and the web portion of the second H-shaped steel pile. It is characterized by arranging and placing.

In the method of forming a continuous pile according to the present invention, in the above (3), the first method is performed between the fixture in the groove portion of the other second H-shaped steel pile and the web portion of the other second H-shaped steel pile. It is characterized in that another second H-shaped steel pile is driven so that the H-shaped steel pile is arranged.

According to the present invention, the H-shaped steel pile and the channel-shaped pile used as continuous piles are both thick and resistant to external pressure, unlike small steel sheet piles such as trench piles. It is possible to form a continuous pile by substantially contacting each of them and driving them alternately, and to form a strong continuous wall that is not easily affected by ground fluctuations, external pressure, and the like. In addition, the flange of the H-shaped steel pile is placed in the groove of the grooved pile having the grooved members at both ends so as to be substantially parallel to the web portion of the grooved member, and the pile is placed separately. It is possible to fix the piles between the piles without using connecting means or the like, and it is possible to construct a continuous pile having sufficient strength.

By using an H-shaped member made of H-shaped steel as the foundation member of the groove-shaped pile, the foundation member and the groove-shaped member can be firmly bonded to each other, and a groove-shaped pile having higher strength can be obtained. Further, if angle steel or the like is used as the groove-shaped member, the groove-shaped member can be more easily constructed. Further, the groove portion of the grooved pile has a narrow structure toward the inside, that is, the distance between the flange portions of the grooved member is gradually narrowed toward the web portion, so that the inside of the groove portion is formed. Positioning of the H-shaped steel pile to be driven into the pile is facilitated while absorbing the misalignment due to vibration during driving, and the H-shaped steel pile can be easily placed at a desired position in the groove. , It is possible to construct a continuous pile with a higher water blocking effect.

When an H-shaped steel pile or a grooved pile is driven, the pile is bent by providing a fixture for fixing other piles constituting the continuous pile at a predetermined position on the grooved member of the grooved pile. In addition, external pressure disconnects the piles themselves, destroying the mountain retaining walls and retaining walls, and the auxiliary parts of the mountain retaining walls and retaining walls. This can also be prevented.

By providing the fixture provided on the groove-shaped member so as to incline from the pile driving direction, the fixture can be firmly fixed to the flange portion, and resistance from external pressure is reduced to make it stronger. It becomes a fixture. Further, fixtures are provided on the flanges of the groove members on the two groove surfaces of the channel pile, and the surface facing the H-shaped steel pile is inclined in the same direction with respect to the pile driving direction. Therefore, when the H-shaped steel pile is driven adjacent to the channel-shaped pile, and when the channel-shaped pile is driven adjacent to the H-shaped steel pile, the shape is easy to insert in the driving direction. Since it has an inclination angle, it can be inserted smoothly.

Further, even when a plurality of H-shaped steel piles are used alternately to form a continuous pile instead of the continuous pile of the channel-shaped pile and the 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 in the groove, the H-shaped steel pile is prevented from being bent and driven, and the continuous pile itself is disconnected due to the external pressure, and the pile is composed of the continuous pile. It is also possible to prevent the mountain retaining wall and the retaining wall, as well as the auxiliary wall of the mountain retaining wall and the retaining wall from being destroyed.

By providing the fixture provided on the second H-shaped steel pile so as to incline from the pile driving direction, the fixture can be firmly fixed to the flange portion, and resistance from external pressure can be reduced. It reduces and becomes a stronger fixture. Further, the fixtures are provided on the flanges of the H-shaped steel on the two groove surfaces of the second H-shaped steel pile, respectively, and the surface facing the first H-shaped steel pile is relative to the pile driving direction. Since it is inclined in the same direction, when an H-shaped steel pile is placed adjacent to another H-shaped steel pile, it has an inclination angle that is easy to insert with respect to the driving direction, so it is smooth. It is possible to insert it in.

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, the performance is deteriorated even if the driving device is small and light. Since it is a simple mechanism without any work, it can be easily carried to the site where large equipment cannot work, and even in narrow places such as mountains, mountain retaining walls and retaining walls, and auxiliary walls of mountain retaining walls and retaining walls. Etc. can be placed. Further, when a channel pile or an H-shaped steel pile provided with a fixture can be used, the H-shaped steel pile connected by the fixture can be easily fixed, and a complicated process is not required and the connection can be easily performed. It becomes. On the other hand, when welding the fixture at the time of placing, it is possible to connect a new one after checking the condition of the ground, so it is possible to connect a fixture with a more effective shape and size at the site, and connect more firmly. It becomes possible to do.

Perspective view explaining the continuous pile of this invention Top view for explaining the grooved pile of this invention Top view illustrating another aspect of the grooved pile of the present invention. Top view illustrating another aspect of the grooved pile of the present invention. A perspective view illustrating an aspect in which a fixture is provided on the grooved pile of the present invention. Perspective view illustrating one aspect of the fixture of the present invention. A perspective view illustrating another aspect in which a fixture is provided on the grooved pile of the present invention. A perspective view illustrating another aspect in which a fixture is provided on the grooved pile of the present invention. A perspective view illustrating another aspect in which a fixture is provided on the grooved pile of the present invention. A perspective view illustrating another aspect in which a fixture is provided on the grooved pile of the present invention. Perspective view explaining the method of forming a continuous pile using the fixture of this invention. Perspective view explaining the continuous pile of another embodiment of this invention. A perspective view illustrating an aspect in which a fixture is provided on the second H-shaped steel pile of the present invention. A perspective view illustrating another aspect in which a fixture is provided on the second H-shaped steel pile of the present invention. A perspective view illustrating another aspect in which a fixture is provided on the second H-shaped steel pile of the present invention. A perspective view illustrating another aspect in which a fixture is provided on the second H-shaped steel pile of the present invention. Schematic diagram showing an example of a pile driving vehicle used for pile driving constituting a continuous pile of the present invention.

FIG. 1 describes an embodiment of a continuous pile according to the present invention by a perspective view from a top surface direction, and the continuous pile according to the present invention has a pair of flange portions 21 and 22 and the pair of flange portions 21 and 22. A base member includes an H-shaped steel pile 2 having a web portion 23 connecting the two in the center thereof, and a groove-shaped member 54 having a web portion 53 connecting the pair of flange portions 51 and 52 and the pair of flange portions 51 and 52 at the ends. The channel piles 5 provided at both ends of the 55 are alternately arranged, and the H-shaped steel piles are formed in the groove 56 surrounded by the pair of flanges 51 and 52 of the groove member and the web portion 53. The flange portions 21 and 22 of No. 2 are arranged so as to be substantially parallel to the web portion 53 of the groove-shaped member to form a continuous pile.

As shown in FIG. 2, the groove-shaped pile 5 has a groove-shaped member 54 having a web portion 53 connecting the pair of flange portions 51 and 52 and the pair of flange portions 51 and 52 at their ends, and the base member 55. It consists of piles connected to both ends, but in the example shown in FIG. 2, it has a structure in which an iron plate 551 is provided as a foundation member and a channel steel 541 is provided as a channel member 54. Commercially available piles that can be used as piles to be buried in the ground can be used, and the iron plate and channel steel are connected by a general method, for example, welding.

Further, as the foundation member 55 of the grooved pile 5, instead of the iron plate as shown in FIG. 2, for example, as shown in FIG. 3, a web portion connecting a pair of flange portions and a pair of flange portions at the center thereof is provided. An H-shaped member 552 made of H-shaped steel having the flange can be used. It can be formed by welding or the like to the web portion 53 of the groove-shaped member 54 (grooved steel 541) on a surface of the pair of flange portions of the H-shaped member 552 that is not on the side to be joined to the web portion. In this case, since the contact area between the grooved member 54 (grooved steel 541) and the foundation member 55 (H-shaped member 552) becomes large, it is possible to form a grooved pile having 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 as appropriate according to the site conditions and the size of the channel-shaped member. May be good.

The groove-shaped member 54 has a substantially U-shaped shape due to the flange portions 51, 52 and the web portion 53, and the groove portion 56 exists in the region surrounded by the flange portions 51, 52 and the web portion 53. For example, when channel steel 541 is used as the channel member 54, one having a flange portion × web portion of 65 mm × 125 mm is used, but the size, depth, etc. of the channel member, etc. Can be changed as appropriate depending on the situation at the site and the size of the H-shaped steel piles that make up the continuous pile.

The width of the flange portion and the width of the web portion of the groove-shaped member 54 may be always constant (completely U-shaped) or may be changed. As shown in FIGS. 2 and 3, the width of the flange portion is gradually widened toward the web portion so that the distance between the flange portions 51 and 52 becomes narrower toward the web portion 53. By doing so, it becomes possible to provide a play portion at the time of positioning, and while absorbing the positional deviation due to vibration or the like during driving of the H-shaped steel pile 2 to be driven in the groove 56, the desired position is finally obtained. It is possible to place the flange portion of the H-shaped steel pile 2 in the vicinity of the web portion of the groove-shaped member 54 and drive it, the connection between the piles is strengthened, the water blocking effect is higher, and the external pressure is also strong. It is possible to construct a continuous pile.

Further, as the channel member 54, instead of the commercially available channel steel 541, as shown in FIG. 4, a pair of angle steels 542 having a substantially L-shaped cross section are welded to the flange portion of the H-shaped member 552 of the foundation member. By doing so, it is also possible to form the groove-shaped member 54 with the flange portion of the H-shaped member and the pair of angle steel 542. The angle steel is also called an angle material, and a commercially available product can be used, and the angle steel is provided at both ends of the surface of the flange portion on the opposite side where the web portion and the flange portion of the H-shaped member 552 are connected.

As shown in FIG. 1, the H-shaped steel pile 2 is a commercially available H-shaped steel having a pair of flange portions 21 and 22 and a web portion 23 connecting the pair of flange portions 21 and 22 at the center thereof. You can use the one. For example, as the H-shaped steel pile 2, a flange portion × web portion of 100 mm × 200 mm is used, but the width, length, depth, etc. of the H-shaped steel pile are determined by the situation at the site and the groove. It can be changed as appropriate in relation to the size of the shaped pile 5.

In the H-shaped steel pile 2, the lengths of the flange portions 21 and 22 are shorter than the web portion 53 of the grooved member 54 of the grooved pile, and the length of the web portion 23 is longer than the flange portions 51 and 52 of the grooved member. Use things. By using a flange portion 21 or 22 of the H-shaped steel pile 2 shorter than the length of the web portion 53 of the groove-shaped member of the channel-shaped pile, the H-shaped steel pile 2 is placed in the vicinity of the web portion 53 of the channel-shaped member. The flange portions 21 and 22 of the steel pile 2 can be arranged. That is, as shown in FIG. 1, the flange portions 21 and 22 of the H-shaped steel pile 2 can be arranged so as to enter the groove portion 56 of the channel-shaped pile, and a horizontal sheet pile or the like can be used between the H-shaped steel piles. Unlike the conventional structure connected, the web portion 23 of the H-shaped steel pile 2 plays the role of the conventional horizontal sheet pile, and the channel pile 5 plays the role of the conventional H-shaped steel pile. Compared to the sheet pile structure, the strength of the entire pile is increased. Further, 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 groove-shaped member of the channel-shaped pile. Therefore, not only the effect of suppressing the pressure by the flange portion of the H-shaped steel pile 2 against 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 channel pile 5. Therefore, the fixing of the H-shaped steel pile 2 is further strengthened, and it becomes possible to form a stronger continuous pile.

The closer the flange portion 21 of the H-shaped steel pile is to the web portion 53 of the channel member, the closer the gap between the H-shaped steel pile 2 and the channel-shaped pile 5 that are close to each other disappears, and the H-shaped steel pile 2 and the channel-shaped The pile 5 can be naturally fixed at each position without using another connecting means. Further, if the H-shaped steel pile 2 and the channel-shaped pile 5 are arranged at close positions and the upper portions of the piles are fixed by welding or the like, the continuous piles are more firmly fixed.

On the other hand, by using a H-shaped steel pile whose web portion 23 is longer than the flange portion 51 of the groove-shaped member, the flange portions 51 of the groove-shaped member are brought closer to each other, and the groove-shaped piles 5 are brought into contact with each other. While preventing it, the web portion 23 can form a wall instead of the horizontal sheet pile. The length of the web portion 23 of the H-shaped steel pile is not particularly limited, but if it exceeds 5 times the length of the foundation member 55 of the channel pile 5, the arrangement balance becomes poor and the wall made of continuous piles. It is more preferable that the amount is up to about 5 times because there is a possibility that the function of the steel is deteriorated.

In the example shown in FIG. 1, the groove-shaped member 54 is composed of a pair of flange portions 51 and 52 and a web portion 53 connecting the pair of flange portions. For example, as shown in FIG. 5, the groove-shaped member 54 has a groove shape. At a position S on the groove 56 surface side of the pair of flange portions 51 and 52 of the member, which is separated from the web portion 53 of the grooved member by the width of the flange portion 21 of the H-shaped steel pile 2, for example, a pair of fixtures. The one provided with 6 can be used.

As shown in FIG. 5, the fixture 6 is provided at least on the upper end portion and \ or lower end portion of the flange portions 51 and 52 of the groove-shaped member on the groove portion 56 surface side to prevent the pile from bending and driving. However, it is more desirable in that it can prevent the piles from being destroyed. That is, when the H-shaped steel pile 2 is driven in the vicinity of the already driven groove-shaped pile 5, the fixing tool 6 provided at the upper ends 51 and 52 of the flange portion of the groove-shaped member is used as a mark to fix the H-shaped steel pile 2. The flange portion 21 of the H-shaped steel pile can be reliably arranged between the tool 6 and the web portion 53 of the channel member, and the H-shaped steel pile 2 is driven into a desired position without causing misalignment. be able to. On the other hand, when the channel pile 5 is driven in the vicinity of the already driven H-shaped steel pile 2, it is provided at the lower ends 51 and 52 of the flange members 51 and 52 of the groove member of the groove pile. Using the fixture 6 as a mark, adjust the position of the grooved pile 5 so that the already driven H-shaped steel pile 2 is arranged between the fixture 6 and the web portion 53 of the grooved member to a desired position. Can be placed in.

The shape of the fixture 6 is arbitrary, but for example, it has a rectangular parallelepiped elongated shape as shown in FIGS. 5 and 6 (a), and the 6A (opposite surface of 6B) side is the web portion side of the groove-shaped member. Install towards. Further, in the side view as shown in FIGS. 6 (b), 6 (c) and 6 (d), a triangular shape, a trapezoidal shape, an elongated shape having a part of a fan shape, or the like may be used. When using, the surface 6A side on the inclined side is installed so as to face the web portion side of the groove-shaped member. In addition, a cube-shaped member may be used instead of the elongated shape.

Further, as shown in FIG. 7, the fixture 6 may be provided in a shape continuous from the upper end portion to the lower end portion on the groove portion 56 surface side of the flange portions 51 and 52 of the groove-shaped member of the grooved pile. If the fixture 6 is continuously provided from the upper end to the lower end of the flange portions 51 and 52 of the groove-shaped member 54, the area for welding the fixture to the flange portion increases, which increases the labor, but the fixture is H-shaped. Since the H-shaped steel pile 2 is formed continuously with respect to the insertion direction of the steel pile, the positioning of the H-shaped steel pile 2 becomes easier, and the H-shaped steel pile or the channel-shaped pile is further prevented from being bent and driven. Since the connection between the piles is also made through a stronger fixture, the connection between the piles itself becomes stronger, and the pile connection of the piles is disconnected by the external pressure, and the piles are destroyed. It is also possible to prevent it from happening.

Further, as shown in FIG. 8, the fixture 6 has a surface 6A facing the H-shaped steel pile 2 to be driven at a position adjacent to the grooved pile 5 and is inclined with respect to the pile driving direction. It is desirable to use one from the viewpoint of smoother connection between piles. That is, the channel 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 portion 56 provided in the grooved pile 5. However, in the fixture 6 provided on the groove-shaped member, the surface 6A (opposite surface of 6B) facing the H-shaped steel pile 2 to be driven adjacently is inclined with respect to the pile driving direction. is doing. For example, when the fixture 6 itself has an elongated rectangular parallelepiped structure as shown in FIG. 6A, the vertically elongated surface (longitudinal surface) is inclined in the direction inclined from the pile driving direction. Arranged and, as shown in FIGS. 6 (b), (c) and 6 (d), when the fixture has a structure such as an inclined elongated shape, the inclined surface faces the H-shaped steel pile to be driven. Place it facing the surface.

If you try to install the fixture at a position close to the web part of the groove-shaped member, the distance to the web part is short and it is difficult to perform the welding work completely, but the fixture should be tilted from the direction in which the pile is placed. By providing the groove-shaped member at a position away from the web portion 53, welding work is easy because there is a distance from the web portion, and the fixture can be firmly fixed to the flange portion. By inclining, it is possible to increase the resistance surface against external pressure, and it becomes a stronger fixture.

As shown in FIG. 9, when the fixtures 6 are provided in pairs on the flange portions 51 and 52 of the groove-shaped members on the 56 surfaces of the two groove portions of the groove-shaped pile, the fixtures 6 are respectively provided. However, it is more desirable that the surface facing the H-shaped steel pile is inclined in the same direction as the pile driving direction (in FIG. 9, it is inclined toward the upper right of the paper surface). That is, by adopting such a configuration in which the H-shaped steel pile 2 is inclined in the same direction, when the H-shaped steel pile 2 is driven adjacent to the channel-shaped pile 5, and the groove-shaped steel pile 5 is 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 the H-shaped steel pile 2 is driven in the vicinity of the already driven grooved pile 5, the grooved members 51 and 52 of the already driven grooved pile are placed on the grooved portion 56 surface side. The H-shaped steel pile 2 is driven by using the provided fixture 6 as a mark. In this case, since the H-shaped steel pile 2 is driven from above the groove-shaped pile 5, the H-shaped steel pile 2 is driven. If the structure (the channel member on the left side in FIG. 9) is inclined so that the groove portion 56 into which the shaped steel pile 2 is inserted is opened upward, the H-shaped steel pile 2 can be easily inserted. On the other hand, when the grooved pile 5 is driven in the vicinity of 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 lowered. 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 groove-shaped pile 5 is inserted. It will be easier.

Further, in addition to the fixture 6 at the upper end and \ or the lower end, a second fixture 8 can be provided between the upper end and the lower end of the groove surface of the flange of the grooved 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 flange portions 51 and 52 of the groove-shaped member, and the longitudinal direction thereof is directed to the open surface side of the groove portion. .. For example, as shown in FIG. 10, the first fixture 6 at the upper end and the lower end has a shape inclined from the pile driving direction, while the second fixture 8 has a shape inclined from the pile driving direction. A plurality of rectangular parallelepiped elongated shapes are provided on the wall surface portions of the flange portions 51 and 52 of the groove-shaped member, and the longitudinal direction of the elongated shape of each of the second fixtures is toward the open surface side of the groove portion 56. Arranged (arranged at a position where the longitudinal direction of the rectangular parallelepiped shape is horizontal). Further, the second fixture 8 has not only a rectangular parallelepiped shape but also a triangle, a trapezoid, and a part in a side view as shown in FIGS. 6 (b), (c), and (d) like the first fixture. It may be an elongated shape having a fan shape, and when such an elongated shape is used, 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 (vertical portion) of the elongated shape is the vertical direction (direction in which the pile is driven), it is necessary to provide the fixtures 6 and 8 at a narrow position close to the web portion of the groove-shaped member. Therefore, the work space is narrow, welding work is difficult, and it is not possible to completely weld and connect, which may reduce the strength. On the other hand, if the elongated shape is formed so that the longitudinal direction (vertical portion) is the lateral direction (direction on the open surface side of the groove portion), such a problem does not occur and the fixture can be firmly adhered. Therefore, for the fixtures 6 provided at the upper end and the lower end, which serve as marks at the time of driving, it is desirable to give priority to ease of insertion even if the strength is sacrificed to some extent. Therefore, it is preferable to use an inclined shape. Ideally, for the second fixture 8 in the portion other than the lower end and the upper end, priority is given to strength, and the longitudinal direction (vertical portion) of the elongated shape is the lateral direction (direction toward the open surface side of the groove portion). ) Is desirable.

As described above, by providing fixtures having various shapes at various positions of the groove-shaped members 54 of the groove-shaped piles constituting the continuous pile, it is possible to form a stronger continuous pile without misalignment.

Next, to explain the method of forming the continuous piles of the present invention, the continuous pile forming method according to the present invention uses a pair of driving devices 1 having a function of driving an object by a method of striking a weight. A groove-shaped pile 5 in which a groove-shaped member 54 having a web portion 53 connecting the flange portions 51 and 52 and the pair of flange portions at their ends is connected to both ends of the base member 55, and a pair of flange portions 21 and 22. This is a method in which the H-shaped steel pile 2 having the web portion 23 connecting the pair of flange portions at the center thereof is alternately driven into the ground to form a continuous pile, and the groove-shaped pile 5 is placed in the ground. In the groove portion 56 surrounded by the pair of flange portions of the groove-shaped member of the channel-shaped pile and the web portion, the flange portion 21 of one of the H-shaped steel piles is the web portion 53 of the channel member. The H-shaped steel pile 2 is driven at a position substantially parallel to the above, and the other flange portion 22 of the H-shaped steel pile is located within the groove portion 56 of the grooved member so as to be substantially parallel to the web portion 53 of the grooved member. Then, another channel pile 5 is driven, and the channel pile 5 and the H-shaped steel pile 2 are repeatedly driven alternately, and the H-shaped steel pile 2 and the channel steel pile 5 are placed at a desired position in the ground. To form a continuous pile.

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

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

Preceding moat is the same work as excavating the ground where a pile is formed in advance using an auger, etc., and then pulling out the auger to make a hole in the ground or return the soil and shift the location. By repeating this method, a large number of holes are made in the ground and the condition of the soil in the ground is softened before burying the position where the piles are buried, but the method is not particularly limited. For example, the work of attaching an auger to the tip of a mini excavator of a construction machine having a rotation drive mechanism, burying the auger in the ground by rotating the auger with the rotation drive mechanism, and then pulling it out by rotating it in the reverse direction after burying it. By repeating this, the soil in the ground can be softened. Here, an example of pre-digging by repeatedly burying and pulling out one auger was explained, but it is also possible to efficiently perform pre-drilling using multiple augers, and the shape of the auger used for pre-drilling is also changed as appropriate. It is possible to do. The device used for this advance digging may also be used as a driving device, and it is possible to appropriately select whether or not to perform advance digging depending on the state of the site.

Next, a driving device 1 having a function of driving an object by a method of striking a weight is placed on the ground near a planned burial position. In a narrow site, it is not possible to use a large power unit to install a series of piles, and on the other hand, if a small power unit is used, sufficient striking force cannot be secured, so the ground is strong in a narrow space. On the other hand, when burying a continuous pile, it is necessary to use a driving device having a function of driving an object by a method of striking a weight having a strong striking force even if it is small.

As the driving device 1, for example, as shown in FIG. 17, a mini having a boom 11 whose tip position can be moved in a three-dimensional direction by a joint or an expansion / contraction mechanism and an outrigger 12 for fixing the driving device on the ground. A device composed of a crane, having no leader at a position suspended from the tip position of the boom 11, and having a driving tool 10 equipped with a steel weight 107 is used. Such a device is small and lightweight, and can be moved even in a place where a large vehicle cannot enter. The driving device 1 can also be used when an H-shaped steel pile or a channel-shaped pile constituting a continuous pile is lifted and installed 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, but it may be a drilling pillar car, a mini excavator, or the like, and is assembled at the site instead of a construction vehicle. -It may be a fixed type driving device having a crane shape that can be installed, and may be a device to which a weight can be connected. In places where vehicles cannot enter or even temporary monorails cannot be installed, it is more desirable to use a driving device that can be assembled and installed on site.

The driving tool 10 does not have a leader which is an attachment with a traveling rail that narrows the working radius at the work site, and in the example shown in FIG. 17, the driving tool 10 is directly located at the tip position of the boom 11. Be connected. In the driving tool 10, the driving tool connecting device 101 is connected to the tip position of the boom 11, the iron rod 102 is inserted into the connecting device 101, the wire 103 is connected to the connecting device 101, and the weight 107 is moved in the vertical direction. The elevating device 106 for elevating and lowering the weight and the weight 107 made of steel such as Monken are suspended, and the cushioning member 17 and the protective attachment 18 are sequentially connected under the structure. The driving tool 10 is not limited to the above configuration, and a weight capable of applying a load to the continuous pile to be buried is moved up and down with respect to the ground to hit the continuous pile. The configuration does not matter as long as it can be buried in. Further, regarding the weight 107, a steel monken or the like is assumed, but the weight 107 is not limited to this. The elevating device 106 is provided with a rope 105 for manually removing the weight 107 from the hook 104 so 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 driving device 1 is used to lift the grooved pile 5 shown in FIG. 2 which is the object to be driven and move it to the planned burial position. Let it build on the ground. The groove-shaped pile 5 can be lifted by using the hook 104 or the like of the driving device 1.

After the grooved pile 5 is built in the planned burial position, the boom 11 of the driving device 1 is operated to move the grooved pile 5 so as to come into contact with the upper part of the grooved pile 5. After confirming that the cushioning member 17 and the protective attachment 18 are located at the center of the upper part of the grooved 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, when the operator manually pulls the rope 105 downward, the weight 107 is disengaged from the hook 104 of the elevating device 106, the weight 107 falls downward, and the groove-shaped pile 5 is impacted and driven. .. By repeating this operation and raising and lowering the weight 107 many times, a striking force is repeatedly applied to the grooved pile 5 from above, and the grooved pile 5 is embedded at a desired position in the ground.

When the embedding of the groove-shaped pile 5 in the ground is completed, the driving device 1 having a function of driving an object by a method of striking a weight as shown in FIG. 17 is used again in FIG. As shown, one flange portion 21 of the H-shaped steel pile 2 is a web portion of the groove-shaped member in a groove portion 56 surrounded by a pair of flange portions of the groove-shaped member of the driven groove-shaped pile and a web portion. The H-shaped steel pile 2 is driven at a position substantially parallel to 53.

Specifically, as in the case of driving the grooved pile 5, the H-shaped steel pile 2 is to be lifted by using the driving device 1 or a device different from the driving device 1, and the H-shaped steel pile 2 is scheduled to be buried. Move to position. As shown in FIG. 1, the buried position of the H-shaped steel pile 2 is a groove portion which is a region surrounded by the flange portions 51 and 52 and the web portion 53 of the groove-shaped member of the groove-shaped pile 5 which has already been driven. 56 is positioned so that the flange portion 21 of the H-shaped steel pile 2 fits comfortably and the flange portion 21 of one of the H-shaped steel piles 2 is substantially parallel to the web portion 53 of the channel member. After adjusting to the position, the H-shaped steel pile 2 is built on the ground. After the H-shaped steel pile 2 is built, the weight 107 is repeatedly raised and lowered up and down many times by the same method as the driving of the channel-shaped pile 5, and the striking force is repeatedly applied from above to ground the H-shaped steel pile 2. Embed to the desired position inside. After that, the upper portion of the H-shaped steel pile 2 and the groove-shaped member 54 of the channel-shaped pile can be fixed by welding or the like, and in this case, a stronger connection is obtained.

Further, when a groove-shaped pile provided with a pair of fixtures 6 as shown in FIG. 5 or the like is used, as shown in FIG. 11, the inside of the groove portion 56 of the groove-shaped pile that has already been driven. 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 built on the ground and the same method is used. The H-shaped steel pile 2 is embedded at a desired position in the ground. When the H-shaped steel pile 2 is driven into the groove portion 56 by using the web portions 51 and 52 of the groove-shaped member of the groove-shaped pile provided with the fixture 6, the H-shaped steel pile is used. The fixture 6 and the web portion 53 of the channel member and the pair of flanges 51 and 52 are arranged in an area surrounded by all four sides so that the positions do not shift and the H-shaped steel pile 2 is bent and driven. Can be prevented. Furthermore, since the structure surrounds the H-shaped steel pile 2 from all four sides, it is possible to prevent the continuous piles from being disconnected due to external pressure and the continuous piles from being destroyed. ..

When the burial of the H-shaped steel pile 2 in the ground is completed, the driving device 1 and the like are used again, and as shown in FIG. 1, the other flange portion 22 of the H-shaped steel pile 2 that has already been driven is used. In the groove portion 56 surrounded by the pair of flange portions and the web portion of the groove-shaped member, another groove-shaped pile 5 is driven at a position substantially parallel to the web portion 53 of the groove-shaped member.

Specifically, as in the case of the conventional driving, the driving device 1 or a device different from the driving device 1 is used to lift another groove-shaped pile 5 and move it to the planned burial position. The driving position of another grooved pile 5 is the groove shape of another grooved pile in which the flange portion 22 on the opposite side of the flange portion 21 of the H-shaped steel pile 2 that has already been driven is newly driven. Another grooved pile 5 so as to fit completely in the area surrounded by the web portion 53 of the member 54 and the flange portions 51 and 52, and at a position substantially parallel to the web portion 53 of the grooved member. And build it on the ground at that position. After building another grooved pile 5, the weight 107 is moved up and down many times by the same method as before to repeatedly apply a striking force from above, and another grooved pile 5 is desired in the ground. Embed to the position. After that, the upper portion of the grooved member 54 of the H-shaped steel pile 2 and another grooved pile 5 can be fixed by welding or the like.

Further, when another groove-shaped pile 5 to be newly driven in the vicinity of the H-shaped steel pile 2 provided with the fixture 6 as shown in FIG. 5 or the like is used, the pile is further different. After adjusting the position so that the other flange portion 22 of the H-shaped steel pile is arranged between the fixture 6 in the groove portion of the grooved pile and the web portion 53 of the grooved member of another grooved pile, another The groove-shaped pile 5 of No. 1 is built on the ground and driven in the same manner, and another groove-shaped pile 5 is embedded at a desired position in the ground. By using the groove-shaped member provided with the fixture in this way, as described above, the groove-shaped member is arranged so as to be surrounded by the area surrounded by the fixture and the web portion of the groove-shaped member and the pair of flanges on all four sides. In addition, since it is driven, the position of another grooved pile 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 do.

Further, in the same manner, the groove portion which is close to another groove-shaped pile 5 placed immediately before and is surrounded by the web portion 53 and the flange portions 51 and 52 of the groove-shaped member of the other groove-shaped pile 5. At the position where the flange portion of another H-shaped steel pile fits comfortably in 56, the flange portion 21 of one of the other H-shaped steel piles 2 is driven at a position substantially parallel to the web portion 53 of the channel member. By repeating the alternating driving of the channel pile 5 and the H-shaped steel pile 2 in the same manner, a wide continuous pile is formed.

In the above embodiment, an example in which the channel steel pile 5 is driven, the H-shaped steel pile 2 is driven, and another channel steel pile 5 is driven is described, but the H-shaped steel pile 2 has been described. May be driven first, and then the channel 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 alternately drive the H-shaped steel pile 2 and the channel-shaped pile 5, and the order of driving the piles does not matter.

Further, in the above embodiment, as shown in FIGS. 1 and 2, a grooved pile, an iron plate 551 as the foundation member 55, and a channel steel 541 as the grooved member 54 are used, but FIGS. 3 to 4 have been used. As shown in, a member using an H-shaped member 552 as a foundation member and a member using an angle steel 542 as a groove-shaped member may be used.

Further, as shown in FIGS. 5 to 9, the fixture 6 for the groove-shaped member of the groove-shaped pile is provided at least at the upper end portion and \ or the lower end portion of the flange portions 51 and 52 of the groove-shaped member on the groove portion surface side. A pile or a groove-shaped member having flanges 51 and 52 provided in a continuous shape from the upper end to the lower end on the groove surface side may be used, or the surface 6A facing the H-shaped steel pile 2 is a pile. The surface 6A facing the H-shaped steel pile 2 is provided on the flange portions 51 and 52 of the groove-shaped member on the 56 surfaces of the two groove portions 56 of the channel pile 5 and is inclined with respect to the driving direction. A pile that is inclined in the same direction with respect to the driving direction of the pile may be used. Further, as another form, as shown in FIG. 10, a second fixture 8 having an elongated shape is provided on the groove surface of the flange portions 51 and 52 of the groove-shaped member, and the second fixture 8 is provided. Those whose longitudinal direction is arranged toward the open surface side of the groove may be used.

Next, an embodiment relating to continuous piles in which a plurality of H-shaped steel piles are used instead of the channel piles will be described.

FIG. 12 describes another embodiment of the continuous pile according to the present invention by a perspective view from the upper surface direction, and the continuous pile of the other embodiment according to the present invention has a pair of flange portions 21 and 22 and the pair. A first H-section steel pile 2 having a web portion 23 connecting the flange portions of the above, and a second H having a web portion 33 connecting the pair of flange portions 31 and 32 and the pair of flange portions at the center thereof. The shaped steel piles 3 are arranged alternately, and the flange portion 21 of the first H-shaped steel pile 2 is provided 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 continuous piles arranged so as to be substantially parallel to the web portion 33 of the second H-shaped steel pile 3, and are on the groove 36 surface 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 or more of the flange portion 21 of the first H-shaped steel pile 2.

The first and second H-shaped steel piles 2 and 3 have a pair of flange portions (21, 22) (31, 32) and a web portion (23) (33) connecting the pair of flange portions. Commercially available ones 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 combined H-shaped steel piles have different sizes and shapes (for example, the first H-shaped steel pile). The steel pile 2 is characterized in that the flange portion × web portion is 100 mm × 200 mm, and the second H-shaped steel pile 3 is 125 mm × 125 mm, etc.).

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

In this way, by using the flange portions 21 and 22 of the first H-shaped steel pile shorter than the length of the web portion 33 of the second H-shaped steel pile, the second H-shaped steel pile can be formed. The flange portions 21 and 22 of the first H-shaped steel pile can be arranged in the vicinity of the web portion 33. That is, as shown in FIG. 12, the flange portions 21 and 22 of the first H-shaped steel pile can be arranged so as to enter the inside of the second H-shaped steel pile 3, and the H-shaped steel pile can be arranged. Unlike the conventional structure in which the spaces are connected by a horizontal sheet pile or the like, the web portion 23 of the first H-shaped steel pile plays the role of the conventional horizontal sheet pile, and the first is compared with the thin wooden horizontal sheet pile. The web portion 23 of the H-shaped steel pile is stronger, and the strength of the entire continuous pile is increased. Furthermore, by using an H-shaped steel pile instead of the horizontal sheet pile, the flange portion 21 of the first H-shaped steel pile is inserted between the flange portions 31 and 32 of the second H-shaped steel pile. Therefore, not only the effect of suppressing the pressure by the flange portion of the second H-shaped steel pile 3 against the pressure of earth and sand on the wall surface, but also the first H-shaped steel pile by the second H-shaped steel pile 3 The flange portion 21 of the above is fixed, and the fixing of the first H-shaped steel pile 2 is further strengthened, which makes it possible to form an extremely strong continuous pile.

Further, the closer the flange portion 21 of the first H-shaped steel pile is to the web portion 33 of the second H-shaped steel pile, the closer the first H-shaped steel pile 2 and the second H-shaped steel pile are to each other. The gap between the piles 3 is eliminated, 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 different connecting means. Further, if the first H-shaped steel pile 2 and the second H-shaped steel pile 3 are arranged at close positions and the upper portions of the respective H-shaped steel piles 3 are fixed by welding or the like, the continuous piles are more firmly fixed.

On the other hand, by using a web portion 23 of the first H-shaped steel pile longer than the flange portion 31 of the second H-shaped steel pile, the flange portions 31 of the second H-shaped steel pile can be brought closer to each other. , The web portion 23 can form a wall instead of the horizontal sheet pile while preventing contact between the second H-shaped steel piles 3. The length of the web portion 23 of the first H-shaped steel pile is not particularly limited, but if it exceeds 5 times the length of the flange portion 31 of the second H-shaped steel pile, the arrangement is unbalanced. Therefore, the function as a wall may be deteriorated, so that it is more preferably up to about 5 times.

As shown in the perspective view of FIG. 13, the second H-shaped steel pile 3 is on the 36-sided side of the groove portions 31 and 32 of the pair of flange portions 31 and 32 of the second H-shaped steel pile, and is the first from the web portion 33. For example, a pair of fixtures 6 are provided at positions S separated by the width or more of the flange portion 21 of the H-shaped steel pile.

As shown in FIGS. 12 and 13, the fixture 6 is provided at least at the upper end portion and \ or lower end portion of the flange portions 31 and 32 on the groove portion 36 surface side to prevent the pile from being bent and driven. However, it is more desirable from the viewpoint that it is possible to prevent the continuous piles 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-shaped steel pile, the first H-shaped steel pile is located in the vicinity of the second H-shaped steel pile 3 that has already been driven. When driving the second H-shaped steel pile, the fixing tool 6 and the fixing tool 6 provided at the upper end of the groove portion 36 surface side of the flange portions 31 and 32 of the second H-shaped steel pile that have already been driven are used as markers. The flange portion 21 of the first H-shaped steel pile 2 can be arranged between the web portions 33 of the H-shaped steel pile 2 and the H-shaped steel pile 2 is driven into a desired position without misalignment. Is possible. On the other hand, if a fixture is provided at the lower end of the groove portions 31 and 32 of the second H-shaped steel pile on the 36-side side, another H-shaped steel pile 2 that has already been driven can be placed in the vicinity of the first H-shaped steel pile 2. When driving the second H-shaped steel pile 3 of the above, the fixture 6 provided at the lower end of the groove portion 36 surface side of the flange portions 31 and 32 of another second H-shaped steel pile before driving. As a mark, the first H-shaped steel pile 2 that has already been driven can be placed between the fixture 6 and the web portion 33 of the second H-shaped steel pile, and the position can be displaced. It is possible to drive another second H-shaped steel pile 3 at a desired position without having to drive it.

The shape of the fixture 6 is arbitrary, but for example, it is a rectangular parallelepiped elongated shape as shown in FIG. 6 (a), and the web portion side of the adjacent H-shaped steel pile on the 6A (opposite surface of 6B) side. Install towards. Further, in the side view as shown in FIGS. 6 (b), 6 (c) and 6 (d), a triangular shape, a trapezoidal shape, an elongated shape having a part of a fan shape, or the like may be used. Is installed with the inclined side surface 6A side facing the web portion side of the adjacent H-shaped steel pile. In addition, a cube-shaped member may be used instead of the elongated shape.

Further, as shown in FIG. 14, the fixture 6 may be provided in a shape continuous from the upper end portion to the lower end portion on the groove 36 surface side of the flange portions 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 flange portions 31 and 32 of the second H-shaped steel pile, the area for welding the fixture 6 to the flange portions 31 and 32 increases, which increases the labor. However, since the fixture 6 is formed continuously with respect to 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 first H-shaped steel piles 2 are positioned. It is possible to prevent the H-shaped steel pile of 2 from being bent and driven, and the connection between the piles is also made through a stronger fixture, so the connection itself between the piles becomes even stronger. It is also possible to prevent the piles from being broken due to the disconnection of the piles due to external pressure.

Further, as shown in FIG. 15, the fixture 6 has a surface 6A facing the first H-shaped steel pile 2 to be driven at a position adjacent to the second H-shaped steel pile 3 in the pile driving direction. It is desirable to use one that is inclined with respect to the pile from the viewpoint of smoother connection between piles. 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 provided in the groove portion 36 provided with the second H-shaped steel pile 3. The flange portion 21 of the H-shaped steel pile 2 of 1 is arranged, but the fixture 6 provided on the second H-shaped steel pile 3 is placed adjacent to the first H-shaped steel pile 2. The surface 6A (opposite surface of 6B) facing the pile 2 is inclined with respect to the driving direction of the pile. For example, when the fixture 6 itself has an elongated rectangular parallelepiped structure as shown in FIG. 6A, the vertically elongated surface (longitudinal surface) is inclined from the pile driving direction. A first H-section steel pile in which an inclined surface is driven when it is arranged and the fixture has an inclined elongated shape-like structure as shown in FIGS. 6 (b), (c) and 6 (d). Place it so that it faces the surface facing 2.

If the fixture is to be provided at a position close to the web portion 33 of the second H-shaped steel pile, the distance to the web portion is short and it is difficult to completely perform the welding work, but the fixture is placed in the pile driving direction. By providing the second H-shaped steel pile so as to be inclined from the above, welding work is easy at a position away from the web portion 33 of the second H-shaped steel pile because there is a distance from the web portion, 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.

When the fixtures 6 are provided in pairs on the flange portions 31 and 32 of the two groove 36 surfaces, as shown in FIGS. 13 to 15, the respective fixtures are shown in FIG. Further, it is more desirable that the surface facing the first H-shaped steel pile 2 is inclined in the same direction as the pile driving direction (in FIG. 15, it is inclined to the right of the groove surface). That is, with such a configuration, when the first H-shaped steel pile 2 is driven next to the second H-shaped steel pile 3, and the second H-shaped steel pile 3 is placed on the first side. When driving the H-shaped steel pile 2 sideways, the piles can be smoothly inserted because the inclination angles are provided in the directions in which the piles are easily inserted with respect to the driving method.

That is, when the first H-shaped steel pile 2 is driven in the vicinity of 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 already been driven is placed. The first H-shaped steel pile 2 is driven by using the fixture 6 provided at the upper end of the groove portion 36 surface side of 32 as a mark. In this case, the first H-shaped steel pile 2 is driven. Since the pile 2 is driven from above, the groove portion 36 into which the first H-shaped steel pile 2 is inserted has a structure inclined so as to be opened upward (the groove-shaped member on the left side in FIG. 15). For example, the first H-shaped steel pile 2 can be easily inserted. On the other hand, when the second H-shaped steel pile 3 is driven in the vicinity of the first H-shaped steel pile 2 that has already been driven, the other second H-shaped steel pile 3 is the first H-shaped steel pile 3. Since the steel pile 2 is driven from above, if the structure is inclined so that the groove 36 is opened downward (the groove-shaped member on the right side in FIG. 9), the first one that has already been driven. It becomes difficult to interfere with the H-shaped steel pile 2, and it becomes easy to insert the second H-shaped steel pile 3.

Further, in addition to the fixtures at the upper end and \ or the lower end, a second fixture 8 is provided between the upper end and the 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 groove 36 surface side of the flange portions 31 and 32 of the second H-shaped steel pile, with its longitudinal direction toward the open surface side of the groove 36. It is more desirable to be done. For example, as shown in FIG. 16, the first fixture 6 at the upper end and the lower end has a shape inclined from the pile driving direction, while the second fixture 8 has a shape inclined from the pile driving direction. A plurality of rectangular parallelepiped elongated shapes are provided, and the longitudinal direction of the elongated shape of each of the second fixtures is arranged toward the open surface side of the groove 36 (the longitudinal direction of the rectangular parallelepiped shape is arranged in a lateral position). NS. Further, the second fixture 8 has not only a rectangular parallelepiped shape but also a triangle, a trapezoid, and a part in a side view as shown in FIGS. 6 (b), (c), and (d) like the first fixture. It may be an elongated shape having a fan shape, and when such an elongated shape is used, it is installed so that the 6A side is the upper surface side.

Fixtures 6 and 8 are provided at a narrow position near the web portion of the second H-shaped steel pile when the elongated shape is formed so that the longitudinal direction (vertical portion) is the vertical direction (direction in which the pile is driven). Since it is necessary, the work space is narrow, welding work is difficult, and it is not possible to completely weld and connect, so that the strength may decrease. On the other hand, if the elongated shape is formed so that the longitudinal direction (vertical portion) is the lateral direction (direction on the open surface side of the groove portion), such a problem does not occur and the fixture can be firmly adhered. Therefore, for the fixtures 6 provided at the upper end and the lower end, which serve as marks at the time of driving, it is desirable to give priority to ease of insertion even if the strength is sacrificed to some extent. Therefore, it is preferable to use an inclined shape. Ideally, for the second fixture 8 in the portion other than the lower end and the upper end, priority is given to strength, and the longitudinal direction (vertical portion) of the elongated shape is the lateral direction (direction toward the open surface side of the groove portion). ) Is desirable.

As described above, by providing fixtures of various shapes at various positions of the second H-shaped steel pile 3 constituting the continuous pile, it is possible to form a stronger continuous pile without misalignment.

Next, a method of forming a continuous pile using a plurality of H-shaped steel piles of the present invention will be described. For example, it has a function of driving an object by a method of striking a weight as shown in FIG. Using the driving device 1, the second H-shaped steel pile 3 is built, buried to a desired position in the ground, and the first H-shaped steel pile 3 is located 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 second H-shaped steel pile 3 already placed at a position close to the first H-shaped steel pile 2. After driving, 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 a desired position in the ground to form a continuous pile. To form.

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

A mark is placed 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) by human power or a mini excavator. In addition, if the ground at the position where the continuous piles are to be buried is strong, advance excavation is performed on the ground at the planned burial position. It should be noted that the preceding moat can be carried out by the same method as that described in the above-described embodiment.

Next, a driving device 1 having a function of driving an object by a method of striking a weight is placed on the ground near a planned burial position. In a narrow site, it is not possible to use a large power unit to install a series of piles, and on the other hand, if a small power unit is used, sufficient striking force cannot be secured, so the ground is strong in a narrow space. On the other hand, when burying a continuous pile, it is necessary to use a driving device having a function of driving an object by a method of striking a weight having a strong striking force even if it is small. As the casting device, the one described in the above-described embodiment is used.

Next, in the vicinity of the planned burial position, the driving device 1 or a device different from the driving device 1 is used to lift and bury the second H-shaped steel pile 3 shown in FIG. 13, which is the object to be driven. Move it to the planned position and build it on the ground. The second H-shaped steel pile 3 can be lifted by using the hook 104 or the like of the driving device 1.

After the second H-shaped steel pile 3 is built in the planned burial position, the boom 11 of the driving device 1 is operated to move the second H-shaped steel pile 3 so as to come into contact with the upper part of the second H-shaped steel pile 3. After confirming that the cushioning member 17 and the protective attachment 18 are located at the center of the upper part 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 to wind up the weight. When the 107 is pulled up and the operator manually pulls the rope 105 downward, the weight 107 is disengaged from the hook 104 of the lifting device 106, the weight 107 falls downward, and the second H-shaped steel pile 3 is impacted. Give and place. By repeating this work and raising and lowering the weight 107 many times, a striking force is repeatedly applied to the second H-shaped steel pile 3 from above, and the second H-shaped steel pile 3 is placed at a desired position in the ground. Embed up to.

When the burying of the second H-shaped steel pile 3 in the ground is completed, the driving device 1 having a function of driving the object by the method of striking 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 in the groove portion 36 surrounded by the pair of flange portions and the web portion of the second H-shaped steel pile 3 placed. The first H-shaped steel pile 2 is driven at a position where 21 is substantially parallel to the web portion 33 of the second H-shaped steel pile 3.

Specifically, similarly to the driving of the second H-shaped steel pile 3, the first H-shaped steel pile 2 is lifted by using the driving device 1 or a device different from the driving device 1 and the like. Move the H-shaped steel pile 2 of 1 to the planned burial position. As shown in FIG. 12, the burial position of the first H-shaped steel pile 2 is in the area surrounded by the flange portions 31, 32 and the web portion 33 of the second H-shaped steel pile that has already been driven. The flange portion 21 of the first H-shaped steel pile 2 fits comfortably in a certain groove portion 36, and one flange portion 21 of the first H-shaped steel pile 2 is a second H-shaped steel pile. The position is substantially parallel to the web portion 33 of the above, and after adjusting to the position, the first H-shaped steel pile 2 is built on the ground. After the first H-shaped steel pile 2 is built, the weight 107 is repeatedly raised and lowered up and down many times by the same method as the driving of the second H-shaped steel pile 3, and the 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, a stronger connection is obtained.

Further, as the second H-shaped steel pile 3 is provided with the fixture 6, as shown in FIG. 13, the groove portion of the second H-shaped steel pile already placed is used. 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 steel pile 3 The steel pile 2 is built on the ground and driven in the same manner to embed the first H-shaped steel pile 2 at a desired position in the ground. By using the second H-shaped steel pile 3 provided with the fixture 6 in this way, when the first H-shaped steel pile 2 is driven into the groove 36, the first H-shaped steel pile becomes , As shown in FIG. 12, the fixture 6 and the web portion 33 of the second H-shaped steel pile 3 and the pair of flanges 31 and 32 are arranged in the area surrounded by all four sides so that the positions do not shift. , It is possible to prevent the first H-shaped steel pile 2 from being bent and driven. Further, since the structure surrounds the first H-shaped steel pile 2 from all four sides, it is possible to prevent the continuous piles from being disconnected by external pressure and being destroyed. Will be.

When the burying of the first H-shaped steel pile 2 in the ground is completed, the other flange portions 22 of the first H-shaped steel pile 2 that have already been driven are paired by using the driving device 1 and the like again. 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, as in the case of the conventional driving, another second H-shaped steel pile 3 is lifted by using the driving device 1 or a device different from the driving device 1, and another second. Move the H-shaped steel pile 3 to the planned burial position. Another second H-shaped steel pile 3 is placed at another position where the flange portion 22 on the opposite side of the flange portion 21 of the first H-shaped steel pile that has already been driven newly places. Another second H so that it fits perfectly in the area surrounded by the web portion 33 and the flange portions 31 and 32 of the H-shaped steel pile of 2 and is positioned substantially parallel to the web portion 33. The shaped steel pile 3 is placed and built on the ground at that position. After building another second H-shaped steel pile 3, the weight 107 is moved up and down many times by the same method as before to repeatedly apply a striking force from above, and another second H-shaped steel pile 3 is built. The pile 3 is embedded to a desired position in the ground. After that, the upper portion of the first H-shaped steel pile 2 and another second H-shaped steel pile 3 can be fixed by welding or the like.

Further, as another second H-shaped steel pile 3 to be newly driven in the vicinity of the first H-shaped steel pile 2, the one provided with the fixture 6 is used, so that another second H-shaped steel pile 2 is used. After adjusting the position so that the other flange portion 22 of the first H-shaped steel pile is arranged between the fixture 6 and the web portion 33 in the groove portion 36 of the shaped steel pile 3, the second H-shaped steel pile 3 is built in the ground and cast in the same manner to embed the second H-shaped steel pile 3 to a desired position in the ground. By using the fixture provided in this way, as described above, the fixture, the web portion of the groove-shaped member, and the pair of flanges are arranged so as to surround the area surrounded by all four sides, and then the pile is placed. 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.

Further, in the same manner, another groove portion 36, which is an area close to the second H-shaped steel pile 3 placed immediately before and surrounded by the web portion 33 and the flange portions 31, 32, is further formed. At a position where the flange portion 21 of the H-shaped steel pile 2 of 1 fits comfortably, a flange portion 21 of one of the first H-shaped steel piles 2 is placed at a position substantially parallel to the web portion 33. By repeating the alternating 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, the second H-shaped steel pile 3 is driven, the first H-shaped steel pile 2 is driven, and then the second H-shaped steel pile 3 is driven. As described 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 further driven. The H-shaped steel pile 2 may be driven. In the present invention, it is meaningful to alternately drive the first H-shaped steel pile 2 and the second H-shaped steel pile 3, and the order of driving the piles does not matter.

Further, as shown in FIGS. 6, 11 to 15, the fixture 6 of the second H-shaped steel pile 3 is provided at least on the upper end portion and \ or lower end portion of the flange portions 31 and 32 on the groove portion 36 surface side. It may be provided, or the flange portions 31 and 32 provided in a continuous shape from the upper end portion to the lower end portion on the groove 36 surface side, or the surface 6A facing the first H-shaped steel pile 2 may be used. Those that are inclined with respect to the driving direction of the pile and those provided on the flanges 31 and 32 on the 36 faces of the two groove portions of the second H-shaped steel pile 3, respectively, are provided relative to the first H-shaped steel pile 2. A surface 6A having a surface 6A inclined in the same direction as the pile driving direction may be used. Further, as another form, as shown in FIG. 16, a second fixture 8 having an elongated shape is provided on the groove 36 surface of the flange portions 31 and 32 of the second H-shaped steel pile, and the second You may use the fixture 8 which is arranged so that the longitudinal direction of the fixture 8 is toward the open surface side of the groove portion.

In each of the above-described embodiments, in driving an H-shaped steel pile or a channel-shaped pile using the driving device 1, the driving device 1 is operated to wind up the wire 103 to pull up the weight 107, and then work. When a person manually pulls the rope 105 downward, the weight 107 is disengaged from the hook 104 of the lifting device 106, the weight 107 falls downward, and the H-shaped steel pile or the steel pipe pile is impacted. However, the rope 105 provided in the elevating device 106 is well known at the out trigger 12 of the driving device 1, another part of the driving device, other devices at the site, and other fixed positions such as the ground. By fixing using technology, the weight 107 is automatically raised and lowered many times without manually pulling the rope 105, and the striking force is repeatedly applied to the H-shaped steel pile and groove-shaped pile from above. H-shaped steel piles and channel piles can also be embedded at desired positions in the ground.

Further, when driving an H-shaped steel pile or a channel-shaped pile using the driving device 1, in order to protect the pile, a metal protective attachment 18 may be connected to the upper end of the pile for driving. However, the shape of the protective attachment 18 may be an existing one regardless of the particular shape. Further, when driving a pile, a cushioning member 17 may be interposed between the weight 107 and the protective attachment 18. Every time the weight 107 collides with the upper part of the protective attachment 18, the iron material of the protective attachment 18 and the iron material of the weight 107 collide violently, and loud noise and vibration are generated. It is possible to reduce the large noise and vibration generated, and to protect the protective attachment and pile material. 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 made 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 circumference thereof can be considered, but the configuration is not limited to this.

The present invention is not limited to the above-described embodiment, and the technical scope of the claims includes various redesigned embodiments within a range that does not deviate from the gist of the invention.

1 Driving device 2 First H-shaped steel pile 3 Second H-shaped steel pile 5 Groove-shaped pile 6 (1st) Fixing tool 8 Second fixing tool 10 Driving tool 11 Boom 12 Out trigger 17 Cushioning member 18 Protective attachment 21 (1st) H-shaped steel pile flange 22 (1st) H-shaped steel pile flange 23 (1st) H-shaped steel pile web 31 31 Second H-shaped steel pile Flange portion 32 Flange portion of the second H-shaped steel pile 33 Web portion of the second H-shaped steel pile 36 Groove portion of the second H-shaped steel pile 51 Flange portion of the grooved member 52 Flange portion of the grooved member 53 Groove Web part 54 of shaped member 54 Groove member 55 Basic member 56 Groove part of grooved member 101 Driving tool connecting device 102 Iron rod 103 Wire 104 Hook 105 Rope 106 Lifting device 107 Weight 108 Hook metal fittings 541 Channel steel 542 Angle steel
551 Iron plate 552 H-shaped member

Claims (9)

Based on 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 groove-shaped member having a web portion connecting the pair of flange portions and the pair of flange portions at their ends. a groove-shaped pile attached to both ends of the member are arranged alternately, previously surrounded by the grooves in the pair of flange portions and a web portion of Kimizogata member, the flange portion of the groove-shaped of the H-shaped steel piles It is a continuous pile that is arranged so as to be substantially parallel to the web part of the member.
Fixtures are provided at positions on the groove surface side of the pair of flange portions of the channel member and at a position separated from the web portion of the groove member by the plate thickness or more of the flange portion of the H-shaped steel pile.
The fixture is characterized in that the surface facing the H-shaped steel pile is inclined so that the distance from the web portion of the groove-shaped member becomes shorter or longer toward the pile driving direction. Continuous pile to do. The continuous pile according to claim 1, wherein the foundation member is an H-shaped member made of H-shaped steel. The groove-shaped member is characterized by being composed of a flange portion of the H-shaped member and a pair of angle steels provided on the flange portion surface side on the side not connected to the web portion of the H-shaped member. The continuous pile according to claim 2. The continuous pile according to any one of claims 1 to 3, wherein the distance between the pair of flange portions of the groove-shaped member is narrowed toward the web portion of the groove-shaped member. .. It said fastener, continuous pile according to any one of claims 1 to 4, characterized in that is provided, et al respectively in the flange portion of the channel members of the two groove surfaces of the groove-shaped piles. A second fixture having an elongated shape is further provided on the groove surface of the flange portion of the groove-shaped member, and the second fixture is arranged so that the longitudinal direction of the second fixture faces the open surface side of the groove portion. The continuous pile according to any one of claims 1 to 5. A first H-section steel pile having a pair of flange portions and a web portion connecting the pair of flange portions at the center thereof, and a second having a web portion connecting the pair of flange portions and the pair of flange portions at the center thereof. The H-shaped steel piles are alternately arranged, and the flange portion of the first H-shaped steel pile is placed in the groove portion surrounded by the flange portion and the web portion of the second H-shaped steel pile. It is a continuous pile that is arranged so as to be substantially parallel to the web part of the shaped steel pile.
At a position on the groove surface side of the flange portion of the second H-shaped steel pile and at a position separated from the web portion of the second H-shaped steel pile by the plate thickness or more of the flange portion of the first H-shaped steel pile. Fixtures are provided ,
The fixture is inclined so that the surface facing the first H-shaped steel pile becomes shorter or longer in the distance from the web portion of the second H-shaped steel pile toward the pile driving direction. A series of piles characterized by the fact that they are used. It said fastener, continuous pile according to claim 7, wherein the respectively provided et al is in the flange portion of the two groove portions faces H-beam of the second H-shaped steel pile. A second fixture having an elongated shape is further provided on the groove surface of the flange portion 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 portion. The continuous pile according to claim 7 or 8.

Images