JPH08144281A - Positioning member for sheet pile - Google Patents

Abstract

PURPOSE: To position sheet piles simply to adjacent previously lowered sheet piles. CONSTITUTION: A longitudinal sheet pile has a plate-shaped central section 26, plate-shaped inclined sections 27 on both sides at the central section and bonding sections 28 formed at end sections on the lateral sides of the inclined sections. A positioning member I for the sheet pile consists of an internal plate member 51, which has a corner section at an obtuse angle and in which a plane cross section is formed in an L shape, an external plate member 52 opposed to the internal plate member at an interval and connecting sections 54, 55 connecting the internal plate member and the external plate member. A projecting section 56 is formed to a surface on the side facing the external plate member of the internal plate member at one end sections on the lateral sides of the internal plate member and the external plate member, and the end section 52c of the external plate member is bent in the direction separate from the internal plate member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet pile positioning member used when a plurality of sheet piles are continuously arranged and embedded.
In particular, the present invention relates to a sheet pile positioning member for engaging the end portion of the sheet pile with the end portion of the already lowered sheet pile when the sheet pile is dropped into the hole.

[0002]

2. Description of the Related Art Conventionally, when the sheet piles are continuously lined up and buried, a hole is excavated by an auger at a place where the sheet piles are expected to be lined up, and then the sheet pile is lowered into the hole, and then earth and sand are backfilled to be buried. are doing. By the way, the sheet pile is an elongated iron plate having a length of 10 to 20 m, and the connecting portions for connecting the sheet piles are formed at both ends thereof. When the sheet piles are embedded, the connecting portions at the end portions are mutually connected. Are combined. Therefore, when descending the sheet pile, it is necessary to position the joining portion of the sheet pile to the joining portion of the adjacent already lowered sheet pile and engage the joining portions with each other.

[0003]

In this positioning, the upper end portion of the sheet pile is hoisted by a crane, and the lower end portion of the sheet pile is manually positioned to the adjacent lowered sheet pile. By the way, this sheet pile is 10 to 20m as mentioned above.
Since it is an elongated iron plate and has a weight of about 1 ton, it is quite difficult to manually position the lower end of the sheet pile.
In addition, since there is a hole of 10 to 20 m deep for burying the sheet pile at the worker's feet, the scaffolding is extremely poor, and the positioning work becomes more and more difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a sheet pile positioning member which can easily position a sheet pile on an adjacent lowered sheet pile.

[0005]

In order to achieve the above object, the sheet pile positioning member (I) of the present invention is adjacent to an engaging portion that engages with the longitudinal end portion of an adjacent sheet pile. And a positioning portion for positioning the sheet pile positioned with respect to the sheet pile.

The vertically long sheet pile (Y) has a flat central portion (26) and flat inclined portions (2) on both sides of the central portion.
7) and a connecting portion (28) formed at the lateral end of this inclined portion. Then, the sheet pile positioning member (I) is engaged with the central portion engaging portion that engages with the longitudinal end portion of the central portion of the adjacent sheet piles and the longitudinal end portion of the inclined portion of the adjacent sheet piles. And a positioning portion that positions the sheet piles that are positioned with respect to the adjacent sheet piles. Further, it is preferable that the central portion engaging portion and the inclined portion engaging portion are formed as concave portions.

Further, the sheet-pile positioning member is an inner plate member (5) having a flat cross section formed in an L-shape having obtuse corners.
1), an outer plate member (52) facing the inner plate member with a gap, and a connecting portion (54, 55) connecting the inner plate member and the outer plate member, Then, one end portion on the lateral side of the outer plate member may be bent and formed in a direction away from the inner plate member.

Further, at one of the lateral end portions of the inner plate member and the outer plate member, a protrusion (56) is formed on the surface of the inner plate member facing the outer plate member, Further, the end portion of the outer plate member may be bent in a direction away from the inner plate member.

[0009]

[Operation] By engaging the engaging portions of the sheet pile positioning member, such as the central portion engaging portion and the inclined portion engaging portion, with the end portions of the adjacent sheet piles, the sheet pile positioning member is attached to the adjacent sheet piles. It is attached. And the positioning part of the positioning member for sheet piles positions the sheet pile which is positioned with respect to the adjacent sheet pile, ie, the sheet pile which descends to a hole, and engages the connection part of sheet piles.

Further, when one end portion on the lateral side of the outer plate member of the sheet pile positioning member is formed to be bent in a direction away from the inner plate member, the end part formed by the bending is Position the sheet pile in the front-back direction.

Further, when a projecting portion is formed on the surface of the inner plate member of the sheet pile positioning member facing the outer plate member, this projecting portion positions the sheet pile in the left-right direction.

[0012]

EXAMPLES Next, an example of the method for burying a sheet pile in the present invention will be described. FIG. 1 is a front view for explaining a method of burying a sheet pile according to the present invention. 2A to 2C are process drawings for explaining a method of burying a sheet pile. FIG. 3 is a plan view showing a state where a hole is excavated. FIG. 4 is a plan view showing a state where the sheet pile is lowered into the hole. FIG. 5 is a perspective view of the guide device. FIG. 6 is a sectional view of the guide device shown in FIG. FIG. 7 is a plan view of the positioning member attached to the sheet pile. FIG. 8 is a VIII arrow view of FIG. 7 for explaining the positioning member. Note that the guide device and the positioning member are not shown in FIGS. 1 and 2. Further, in FIG. 4, the positioning member is simply illustrated by a two-dot chain line.

In FIG. 1, a rotary driving device 4 and a holder 5 are attached to a leader 2 of a pile driving machine 1 so as to be slidable up and down. Then, the rotation drive device 4 and the holder 5 are moved up and down by a sprocket chain 8 which is a lifting device driven by a motor 7. Further, an auger (not shown) having screw blades is attached to the rotary drive device 4, and an excavation head 10 is provided at the tip thereof, and the auger and the excavation head 10 are rotationally driven by the rotary drive device 4. . The casing 11 covers the auger, and the casing 1
1 is attached to the holder 5 in a state in which the rotation angle can be adjusted. Further, the casing 11 is provided with a bifurcated engagement portion 12 that engages with the end portion of the sheet pile Y. The auger, the excavation head 10 and the casing 11 constitute an excavation device K.
In addition, the pile driver 1 is equipped with a winch 14,
The sheet pile Y or the like can be lifted.

Then, the pile driving machine 1 carries out the burying work of the sheet pile Y. As shown in FIG. 2A, the vertical hole 21a is drilled by the drilling device K, and the vertical hole 21a is
As shown in (b), the upper end of the sheet pile Ya is lifted by the winch 14 and lowered. Next, as shown in FIG. 2C, with the engagement portion 12 of the excavating device K engaged with the end of the sheet pile Ya, the excavating device K is lowered while rotating the excavating head 10 to form a hole. A hole 21b adjacent to 21a is excavated. When excavating the hole 21b, the excavator K discharges the excavated earth and sand into the hole 21a in which the sheet pile Ya is descending. Similarly, as shown in FIG. 2D and FIG. 2E, the next sheet pile Yb is lowered, and the hole 21c adjacent to the hole 21b is further excavated. This work is repeated in sequence. And finally, the hole 21 is backfilled with earth and sand.

In FIG. 3, a sheet pile Y is an elongated flat plate-shaped central portion 26 and flat plate-shaped inclined portions 2 on both sides of the central portion 26.
7 and a hook-shaped coupling portion 28 formed at the lateral end of the inclined portion 27. The engaging portion 12 provided on the casing 11 of the excavating device K is engaged with the connecting portion 28 of the sheet pile Y, and the excavating device K has the connecting portion 2
While being guided by No. 8, it descends and excavates the hole 21d.
Since the excavation device K rotates about the connection part 28 only by the guide by the connection part 28, the guide device A for guiding the side surface of the casing 11 of the excavation device K is provided. The guide device A is installed on the H-shaped steel 31 as a track which is arranged along the direction in which the holes 21 are to be arranged in advance and travels.

In FIGS. 5 and 6, on the traveling carriage 33 of the guide device A, there are provided a support plate 36 and a support roller 37 each having a notch for guiding formed in a vertical plate. The slide plate 34 is slidably supported by the support roller 37. In this way, the slide plate 34, which is a slide member, is mounted on the traveling carriage 33.
It is provided so that it can move back and forth laterally with respect to the traveling direction of.
Then, a scale is formed on the slide plate 34, and the projection amount of the slide plate 34 is set to a predetermined value while observing the scale, and the slide plate 3 is locked by the locking means 39.
The upper surface of 4 is pressed and fixed. On the other hand, a guide roller 41 as a guide member is rotatably attached to the tip of the slide plate 34. Therefore, in FIG.
When descending the excavation device K, the guide device A on the H-shaped steel 31 is moved in advance to the side of the position where the hole 21d is excavated. Then, the guide roller 41 of the slide plate 34
So as to guide the side surface of the casing 11 of the excavator K, the slide plate 34 is projected by a predetermined amount, and the locking means 39
Fixed by. Then, the casing 11 of the excavator K
The side surface of the excavator is brought into contact with the guide roller 41, and the engaging portion 12 of the casing 11 is engaged with the connecting portion 28 of the sheet pile Yc, and then the excavating device K is lowered to excavate. Then, after excavation, the excavation device K is raised and pulled out from the hole 21d.

Next, a method of lowering the sheet pile Yd into the hole 21d thus excavated will be described with reference to FIGS. 4, 7 and 8. When excavating the hole 21d, the guide roller 41 of the guide device A was in a position to guide the casing 11 of the excavating device K, but when descending the sheet pile Yd, as shown in FIG. The plate 34 is further projected from the traveling carriage 33, and the guide roller 41 is moved to a position for guiding the side surface of the central portion 26 of the sheet pile Yd to be lowered. Since the sheet piles Y are alternately installed and the distance between the central portion 26 of the sheet pile Y and the H-shaped steel 31 alternates between long and short, for example, when the sheet pile Yc is lowered, the amount of protrusion of the slide plate 34 is increased. Is shorter than in the case of the sheet pile Yd.

Further, as shown in FIG. 7, a positioning member I
Is attached to the already piled down sheet pile Yc, the connecting portion 28 of the sheet pile Yd to be lowered is positioned, and the sheet pile Yd is lowered when the sheet pile Yd is lowered.
Engage with the joint 28 of c. This positioning member I is
As shown in FIGS. 7 and 8, an inner plate member 51 and an outer plate member 52 are provided. This inner plate member 51
Has a L-shape with obtuse corners,
It is composed of a first plate portion 51a and a second plate portion 51b. On the other hand, the outer plate member 52 is opposed to the inner plate member 51 with a gap, and is opposed to the first plate part 51 a of the inner plate member 51 and the first plate part 52 a and the second plate part of the inner plate member 51. 51b and the 2nd board part 52b which opposes are provided. Then, the end of the second plate portion 52b of the outer plate member 52 is bent in a direction away from the second plate portion 51b of the inner plate member 51,
The third plate portion 52c is formed. The inner plate member 51
The second plate portion 51b of the outer plate member 52
There is a facing portion facing b, and an extending portion extending outward from the facing portion.

The first plate portion 51a of the inner plate member 51
And the first plate portion 52a of the outer plate member 52 are the connecting portions 54,
In addition, the second plate portion 51b of the inner plate member 51 and the outer plate member 5
The second second plate portion 52b is connected by a connecting portion 55.
The connecting portions 54 and 55 are provided at a height approximately in the center of the positioning member I. Further, a protrusion 56 having a substantially semi-circular arc shape is provided at the same height as the connecting portions 54 and 55, so that the inner plate member 5 is provided.
It is formed on the extending portion of the first second plate portion 51b.

In FIGS. 4, 7 and 8, the positioning member I is fitted into the hole 21c at the upper end portion of the lowered sheet pile Yc to bring the connecting portions 54 and 55 into contact with the upper surface of the sheet pile Yc. Then, the central portion engaging portion, which is a recess formed by the first plate portion 51a of the inner side plate member 51 and the first plate portion 52a of the outer side plate member 52, engages with the upper end portion of the central portion 26 of the sheet pile Yc. On the other hand, the inclined portion engaging portion, which is a concave portion formed by the second plate portion 51b of the inner plate member 51 and the second plate portion 52b of the outer plate member 52, and the upper end portion of the inclined portion 27 of the sheet pile Yc. Engage. The positioning member I can be pulled out upward with respect to the sheet pile Yc by the central portion engaging portion and the inclined portion engaging portion, but is attached to the front, rear, left and right in a stationary state. In addition, in FIG. 7, the positioning member I is a sheet pile Yc.
Although it is attached to the right side of the sheet pile, when it is attached to the left side of the sheet pile Yc, the positioning member I is attached upside down.

Then, the sheet pile Yd adjacent to the sheet pile Yc.
Is lifted by the winch 14 of the pile driver 1 and lowered from above. At this time, the connecting portion 2 at the lower end of the sheet pile Yd
8 needs to be engaged with the connecting portion 28 at the upper end of the sheet pile Yc, but in FIG. 7, the connecting portion 28 at the lower end of the sheet pile Yd is
In the rearward direction (upward in the figure), the third outer plate member 52
The inner plate member 5 is positioned to the left by the plate portion 52c.
Positioning is performed by the extending portion of the first second plate portion 51b, and the third plate portion 52c of the outer plate member 52 and the second plate portion 51b of the inner plate member 51 function as positioning portions. Then, when the sheet pile Yd is lowered along the positioning member I, the lower left end of the connecting portion 28 of the sheet pile Yd is moved to the inner plate member 51.
After coming into contact with the arc-shaped projecting portion 56 and being displaced to the right by being guided by the projecting portion 56, the sheet pile Yd further descends, and the connecting portion 28 of the sheet pile Yd is connected to the connecting portion 28 of the sheet pile Yc. The sheet pile Yd is arranged in the hole 21d in the coupled state. The protruding portion 56 is located above the inclined portion 27 of the sheet pile Yc so that the lower end of the descending sheet pile Yd does not rest on the upper surface of the inclined portion 27 of the sheet pile Yc.

Although the positioning member I and the guide device A have been described separately, both are used at the same time when the sheet pile Yd is lowered into the hole 21d. That is, when the side surface of the central portion 26 of the sheet pile Yd is brought into contact with the guide roller 41 of the above-described guide device A and the sheet pile Yd is lowered, the connecting portion 28 of the sheet pile Yd is positioned by the positioning member I and is adjacent to it. It engages with the connecting portion 28 of the sheet pile Yc. Then, the sheet pile Yd maintains a state in which the joint portion 28 thereof is engaged with the joint portion 28 of the sheet pile Yc, and descends while the central portion 26 is guided by the guide roller 41.

Further, when excavating the next hole 21e (not shown), the traveling carriage 33 on the H-shaped steel 31 is moved, and the guide roller 41 of the guide device A is moved to the casing 11 of the excavating device K. The protrusion amount of the slide plate 34 is adjusted to a position that guides the side surface. In this way, the holes 21 are sequentially drilled and the sheet pile Y is lowered.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, and various modifications are possible within the scope of the gist of the present invention described in the claims. It is possible to make changes. A modified embodiment of the present invention is illustrated below. (1) In the embodiment, the engaging portion for the central portion of the positioning member I is a concave portion formed by the first plate portion 51a of the inner plate member 51 and the first plate portion 52a of the outer plate member 52. As long as it can be engaged with the central portion 26 of the sheet pile Y, its shape and the like can be changed as appropriate, and it can be configured with a pair of legs and the like. Similarly, if the inclined portion engaging portion can engage with the inclined portion 27 of the sheet pile Y, its shape and the like can be appropriately changed.

(2) In the embodiment, the positioning member I
The protrusion 56 is provided at a height approximately in the center of the positioning member I. However, a portion above the protrusion 56 of the inner plate member 51 may be formed to protrude to the same position as the protrusion 56. It is possible. In addition, the connecting portion 5 of the positioning member I
The sites above 4,55 are not always necessary. In addition, if it is configured as in the embodiment, it can be used even if the positioning member I is turned upside down. (3) In the embodiment, the protrusion 56 of the positioning member I
Has a semi-circular shape, but its shape can be appropriately changed as long as the connecting portion 28 of the falling sheet pile Y can be displaced in the lateral direction. For example, a triangular shape or the like is also possible. .

(4) In the embodiment, the positioning portion is composed of the third plate portion 52c of the outer side plate member 52 and the second plate portion 51b of the inner side plate member 51.
If the can be positioned, its shape and configuration can be appropriately changed. (5) In the embodiment, the connecting portion 5 of the positioning member I
Although 4, 55 are provided at a height approximately in the center of the positioning member I, they are not necessarily provided at the center. (6) In the embodiment, both the guide device A and the positioning member I are used, but it is also possible to lower the sheet pile Y using only the positioning member I without using the guide device A.

[0027]

According to the present invention, since the sheet pile positioning member is provided with the engaging portion and the positioning portion, the sheet pile positioning member causes the sheet pile falling into the hole to be adjacent to the sheet pile. Can be positioned relative to each other. Therefore, it is possible to reduce the work of moving the falling sheet pile and positioning it by human power. Further, when the engaging portion is composed of the central portion engaging portion and the inclined portion engaging portion, the sheet pile positioning member can be firmly attached to the adjacent sheet piles.

When the center engaging portion and the inclined portion engaging portion are formed as recesses, the sheet pile positioning member can be easily attached to the adjacent sheet piles.

When one end on the lateral side of the outer plate member is formed by bending in a direction away from the inner plate member, the end part formed by the bending is the front and rear direction of the sheet pile. Positioning can be performed.

Further, when a projecting portion is formed on the surface of the inner plate member facing the outer plate member, the lateral position of the sheet pile can be determined by this projecting portion.

[Brief description of drawings]

FIG. 1 is a front view for explaining a method of burying a sheet pile according to the present invention.

FIG. 2 is a process drawing for explaining a method of burying a sheet pile.

FIG. 3 is a plan view showing a state where a hole is being excavated.

FIG. 4 is a plan view showing a state where the sheet pile is lowered into the hole.

FIG. 5 is a perspective view of a guide device.

6 is a cross-sectional view of the guide device of FIG.

FIG. 7 is a plan view of the positioning member attached to the sheet pile.

FIG. 8 is a VI of FIG. 7 for explaining the positioning member.
It is a II arrow view.

[Explanation of symbols]

 I Positioning member Y Sheet pile 26 Central part 27 Inclining part 28 Joining part 51 Inner plate member 52 Outer plate member 54 Connecting part 55 Connecting part 56 Projecting part

Claims (5)

[Claims] 1. A sheet pile positioning member for positioning a vertically long sheet pile to an adjacent sheet pile, the engaging portion engaging with an end portion in the longitudinal direction of the adjacent sheet pile, and positioning with respect to the adjacent sheet pile. And a positioning portion for positioning the sheet pile to be cut. 2. A vertically elongated sheet pile having a flat plate-shaped central portion, flat plate-shaped inclined portions on both sides of the central portion, and a connecting portion formed at a lateral end of the inclined portion is adjacent to each other. A sheet pile positioning member for positioning on a sheet pile, wherein a central portion engaging portion that engages with a longitudinal end portion of a central portion of the adjacent sheet piles, and a longitudinal end portion of the inclined portion of the adjacent sheet piles. A sheet-pile positioning member, comprising: an inclined portion engagement portion that engages with a sheet-pile; and a positioning portion that positions a sheet pile that is positioned with respect to the adjacent sheet piles. 3. A sheet pile having a flat plate-shaped central portion, flat plate-shaped inclined portions on both sides of the central portion, and a connecting portion formed at a lateral end of the inclined portion is attached to an adjacent sheet pile. A positioning member for a sheet pile to be positioned, the engaging portion for a central portion having a recess fitted in the longitudinal end portion of the central portion of the adjacent sheet pile, and the longitudinal end of the inclined portion of the adjacent sheet pile. An inclined portion engaging portion having a concave portion to be fitted in the portion; and a positioning portion for positioning the joint portion of the sheet piles positioned with respect to the adjacent sheet piles in a vertically slidable state. A positioning member for sheet piles. 4. An inner plate member having a flat cross section formed in an L shape having obtuse corners, an outer plate member facing the inner plate member with a gap, and the inner plate member. And a connecting portion that connects the outer plate member, and one lateral end of the outer plate member is formed by bending in a direction away from the inner plate member. Positioning member. 5. An inner plate member having a flat cross section formed in an L shape having an obtuse corner, an outer plate member facing the inner plate member with a gap, and the inner plate member. And a connecting portion that connects the outer plate member, and at one end portion of the inner plate member and the outer plate member on the lateral side, on the surface of the inner plate member facing the outer plate member. Is a projecting portion, and the end portion of the outer plate member is bent in a direction away from the inner plate member.