JP2000303426A - Coping concrete construction structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent leakage of filling concrete by closing the bottom between a sheet pile wall and river side wall of coping concrete blocks without bringing gap to correspond to a flexible material, at a construction site. SOLUTION: After coping concrete blocks 40 having the top end wall 41, a bank side wall 42, and a river side wall 43 are installed on the upper end of a sheet pile wall 5, filling concrete is placed in the inside space of the block at site to construct a structure. In this coping concrete execution structure, a closing means closing the bottom between the sheet pile wall 5 and the river side wall 43 is constituted by putting side by side a number of bottom slab elements 30, 31 coping with a part of recessed or protruded shapes of the sheet pile wall 5 formed independently from the coping concrete block 40 while slidably superposing with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete shaping structure for covering an upper end of a sheet pile wall.

[0002]

2. Description of the Related Art Conventionally, a river revetment comprising a pile of sheet piles in which a number of steel sheet piles are engaged with each other next to each other is unstable if left without exposing the upper end of the sheet pile wall after construction. Due to problems such as problems and damage to the scenery, it was common for the concrete to be cast entirely on the top of the sheet pile wall at the top of the sheet pile wall. In the case of this full cast-in-place, it is necessary to assemble temporary brackets and scaffolds as work platforms on the river side first as a formwork support, and in addition to assembling the formwork and reinforcing bars, etc. However, there are problems such as the need for a large number of labors, the large number of man-hours, a great deal of work, and the prolonged construction period. Also, when the water level rose, on-site construction was sometimes impossible.

[0003] From the viewpoint of labor saving, labor saving, and shortening of the construction period, a semi-prefabricated shading concrete construction structure using a precast (PCa) shading concrete block manufactured at a factory has been studied. Has already been implemented. For example, Japanese Patent Publication No. 6-41685 and Japanese Patent No. 2704610 disclose, as shown in FIG. 14, a U-shaped PCa cap concrete having a top end wall 91, a shore side wall 92, and a river side wall 93. Block 90,
A cap concrete construction structure is disclosed in which a concrete filling 102 is installed on the interior space of the cap concrete block 90 and cast in place after being installed on the upper end of the sheet pile wall 101 as a formwork.

[0004] Between the sheet pile wall 101 and the shore-side side wall 92 in the internal space, the bottom thereof is a shore stone, such as crushed stone or river sand.
Filled with concrete 3
2 hardly leaks. However, between the sheet pile wall 101 and the river side wall 93 in the internal space, if the bottom is not closed by any closing means, the filled concrete 102 leaks. Then, the shade concrete block 90 of both gazettes
At the lower end of the river side wall 93, an uneven bottom wall 94 projecting toward the sheet pile wall 101 and conforming to the uneven shape of the sheet pile wall 101 is formed integrally with concrete at the time of precasting. 94 closed the bottom between the sheet pile wall 101 and the river side wall 93. Also,
Sealing is achieved by applying a packing material 95 made of a foamed resin foam or the like attached to the protruding end of the uneven bottom wall 94 to the sheet pile wall 101.

[0005]

However, there is the following problem in the shaping concrete construction structure using the shading concrete block 90. At the actual site, the driving accuracy of the steel sheet pile is low, and the sheet pile wall 101 is not always uniform or inclined. On the other hand, the uneven bottom wall 94 of the cap concrete block 90
The concave / convex shape has exactly a constant dimension and a constant pitch. For this reason, the uneven shape of both often does not match well,
A gap (hard to find) was formed between the sheet pile wall 101 and the packing material 95 of the uneven bottom wall 94, and the filled concrete 102 that had been cast in place sometimes leaked.

Further, the sheet pile wall 101 at the actual site has not only a straight part but also a curved part when viewed from above. On the other hand, the shade concrete block 90 is straight in the longitudinal direction. Therefore, a large gap (easy to find) is generated between the sheet pile wall 101 and the packing material 95 of the uneven bottom wall 94 in the cap concrete block 90 installed at the upper end of the curved portion of the sheet pile wall 101. The closing process was troublesome.

Further, there are various types of steel sheet piles, and the dimensions and pitches of the concave and convex shapes are also different. For this reason,
In the case of the concrete block 90 of the type in which the uneven bottom wall 94 is integrally formed, it is necessary to produce various kinds of concrete blocks in a factory so as to be able to cope with each steel sheet pile. It was difficult in terms of storage space.

[0008] In short, it is difficult for the conventional shade concrete block 90 to flexibly correspond to an actual site. Therefore, the first object of the present invention is to be able to cope with many types of steel sheet piles by only producing a small number of shade concrete blocks at a factory, and to flexibly deal with irregularities and irregularities in the shape of the sheet pile wall at the actual site. In response to the above, the bottom between the sheet pile wall and the river side wall of the cap concrete block can be closed without creating a gap, and during that time, the leakage of the filled concrete cast on site can be prevented. It is to provide a concrete construction structure. In addition, the second object of the present invention is to be able to cope with many kinds of steel sheet piles only by producing a small number of shade concrete blocks at a factory, and to form a bottom between a sheet pile wall and a river side wall of the shade concrete block, An object of the present invention is to provide a shade concrete construction structure that can be closed with good workability.

[0009]

In the present invention, the following means (1), (2) and (3) are employed.

[0010] (1) The shade concrete construction structure according to the first aspect of the present invention is a cover U having a top end wall, a shore side wall, and a river side wall.
In a shank concrete construction structure in which a precast cast-shape concrete block in the shape of a letter is installed on the upper end of a sheet pile wall and then filled with concrete in the space inside the shank concrete block, the sheet pile wall of the internal space is constructed. The closing means for closing the bottom between the and the river side wall, a large number of bottom plate elements corresponding to the concave or convex shape of a part of the sheet pile wall formed separately from the cap concrete block, It is characterized by being arranged side by side while slidably overlapping the overlapping margins provided at the side ends.

In the means (1), the following modes can be exemplified. (1-1) The bottom slab element has a convex bottom plate element corresponding to one concave shape of the sheet pile wall and a concave bottom plate element corresponding to one convex shape of the sheet pile wall, and one concave shape of the sheet pile wall. An example can be exemplified in which an uneven bottom plate element is simultaneously corresponding to a shape and one adjacent convex shape. (1-2) It is preferable that the overlapping margin of the bottom stencil elements be reduced to の of the thickness of the overlapping side surface so that when the two sheets are overlapped, there is no step with the remaining part. (1-3) The method of stopping the bottom plate element on the sheet pile wall and the river side wall is preferably the same as the method of stopping the bottom plate in the following means (2), but is not limited thereto. Therefore, for example, the edge of the bottom slab element on the sheet pile wall side may be received and supported by a metal fitting welded to the sheet pile wall. Further, the edge of the bottom plate element on the river side wall side is fixed to the stopper provided at the lower end portion of the river side wall by screwing, fitting, bonding, or the like, and is cantilevered. May not be particularly stopped.

(2) The cap concrete construction structure according to the second aspect of the present invention is a cover concrete structure having a top end wall, a shore side wall, and a river side wall.
In a shank concrete construction structure in which a character-shaped PCa shank concrete block is installed on the upper end of a sheet pile wall and then filled with concrete in the space inside the shank concrete block, the sheet pile wall of the internal space is constructed. Closing means for closing the bottom between the and the river side wall is constituted by a bottom slab formed separately from the shading concrete block and conforming to the uneven shape of the sheet pile wall, and the edge of the bottom slab on the sheet pile wall side, the sheet pile It is suspended and supported by being fixed to the lower end of the hanging tool hanging from the upper end of the wall or the upper part of the shank concrete block, and the edge of the bottom slab on the river side wall is connected to the receiving portion provided at the lower end of the river side wall. It is characterized by receiving and supporting by receiving.

In the means (2), the following modes can be exemplified. (2-1) The bottom stencil is preferably one in which a convex bottom stencil element and a concave bottom stencil element as in the above means (1) are arranged.
The means is not limited to this. Therefore, for example, a long bottom plate having a plurality of uneven portions may be used. (2-2) The method of stopping the upper end of the hanging tool is not particularly limited, and may be directly stopped by, for example, hooking on the upper end of the sheet pile wall, or may be stopped by a support attached to the upper end of the sheet pile wall. It can be fixed to a reinforcing bar or board that appears on the top end wall or opening of the cap concrete block. (2-3) The receiving portion of the river side wall is not particularly limited. For example, a receiving member made of, for example, an angle material attached to the lower end of the river side wall may be used. An integrally formed convex receiving portion may be used.

(3) The shade concrete structure according to the third aspect of the present invention is a cover concrete structure having a top end wall, a shore side wall, and a river side wall.
In a shank concrete construction structure in which a character-shaped PCa shank concrete block is installed on the upper end of a sheet pile wall and then filled with concrete in the space inside the shank concrete block, the sheet pile wall of the internal space is constructed. The closing means for closing the bottom between the and the river side wall, a large number of bottom plate elements corresponding to the concave or convex shape of a part of the sheet pile wall formed separately from the cap concrete block, A suspending device that is configured by arranging side by side while overlapping the overlapping margins provided at the side ends while slidably overlapping each other, and suspending the edge of the bottom slab element on the sheet pile wall side from the upper end of the sheet pile wall or the upper part of the cap concrete block. The bottom plate element is suspended and supported, and the edge of the bottom slab element on the river side wall is received and supported by a receiving portion provided at the lower end of the river side wall. To.

In the means (3), the following modes can be exemplified. (3-1) Regarding the mode of the bottom plate element, see (1-1) above.
Is the same as (3-2) Regarding the overlap margin of the bottom plate element,
Same as 2). (3-3) Regarding the upper end of the hanging tool, the above (2-2)
Is the same as (3-4) Regarding the receiving part on the river side wall,
Same as 3).

Further, in each of the means (1), (2) and (3), the following modes can be exemplified. -The material of the convex bottom plate element, the concave bottom plate element, or the bottom plate is not particularly limited, and examples thereof include a resin plate, a wood plate, a paper plate, an inorganic plate, and a metal plate. In the case of a resin plate, it is preferable to use a waste resin material (so-called waste plastic) from the viewpoint of reusing resources. -It is preferable that the convex bottom slab element, the concave bottom slab element, or the bottom slab is left without being removed even after the filled concrete is cast in place (so-called burying).

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cap concrete structure according to a first embodiment shown in FIGS.
After the U-shaped PCa cap concrete block 40 having the side wall 43 and the river side wall 43 is installed on the upper end of the sheet pile wall 5 as a formwork, the concrete C is cast into the interior space of the cap concrete block 40 on site. The closing means for closing the bottom between the sheet pile wall 5 and the river side wall 43 in the internal space is formed separately from the cap concrete block 40. A convex bottom plate element 30 corresponding to one concave shape and a concave bottom plate element 31 corresponding to one convex shape of the sheet pile wall 5 are combined with the convex bottom plate element 3.
0 and an overlapping margin 32 provided at the side end of the concave bottom plate element 31
It is constituted by providing side by side while overlapping one another so as to be slidable, and the edge of the convex bottom slab element 30 on the sheet pile wall 5 side is
It is suspended and supported by being fixed to the lower end of the hanging tool 16 hanging from the upper end of the sheet pile wall 5, and the edges of the convex bottom slab element 30 and the concave bottom slab element 31 on the river side wall side are connected to the lower end of the river side wall 43. It is characterized in that it is received and supported by being received by a receiving member 45 provided in the portion. Hereinafter, the details of the structure of the same concrete structure will be described through the description of the construction method.

As shown in FIG. 1, a large number of steel sheet piles 1 formed by bending a steel plate so as to project into a flat trapezoidal shape are provided on the boundary between the shore A and the river B on the river bank. And the overhanging outer surface 3 are alternately driven and lined in order while facing alternately to the river B, and the engaging claws 4 bent at both ends of the steel sheet pile 1 are attached to the adjacent steel sheet pile 1. The sheet pile wall 5 is constructed by engaging the engaging claws 4.

Therefore, the overhanging inner surface 2 facing the river B forms one concave shape of the sheet pile wall 5, and the first support 10 straddling the upper side of the overhanging inner surface 2 is attached to the upper end of the sheet pile wall 5. Fit. The first support 10 has a flat portion 11 made of a strip-shaped steel plate.
And a bent portion 12 formed by bending the periphery thereof downward. The flat portion 11 rests on the upper end surface of the sheet pile wall 5 and the bent portion 12
Is fitted to the upper end portion of the sheet pile wall 5, so that the first support 10 after fitting does not shift even when an external force is applied, and does not shift at the time of block installation described later. A height adjustment bolt 14 is screwed into a nut 13 fixed (or abutted) on both ends of the flat portion 11, and the height of the height adjustment bolt 14 with respect to the upper end surface of the sheet pile wall 5 is adjusted by adjusting the amount of screwing. The height of the top of the head is adjusted to, for example, 100 mm. In addition, the upper end of a hanging tool 16 made of a long bolt is screwed into a nut 15 which is in contact with (or fixed to), for example, two places of the flat portion 11, and the remaining portion of the hanging tool 16 is hung downward.

The overhanging outer surface 3 facing the river B is a sheet pile wall 5.
The second support 20 is hooked on the upper end of the sheet pile wall 5 above the overhanging outer surface 3.
As shown in FIG. 8, the second support 20 includes a base 21 formed by bending a lower half of a small piece of steel plate into a rectangular shape, and a lower portion obtained by dividing the upper half of the steel plate into a forked shape. And a pair of claw portions 22 that are bent. Since the base 21 and the pair of claws 22 grasp the upper end two sides of the bent corner of the sheet pile wall 5, the second support member 20 after being hooked does not shift even when an external force is applied, and is also used when installing the block described later. It does not slip. A height adjusting bolt 24 is screwed into a nut 23 fixed to the base 21, and the height of the head top surface of the height adjusting bolt 24 with respect to the upper end surface of the sheet pile wall 5 is reduced to, for example, 100 mm by adjusting the amount of screwing. adjust.

At the lower end of the hanging member 16, a convex bottom slab element 30 corresponding to one concave shape of the sheet pile wall 5 is fixed. As shown in FIG. 9, the convex bottom slab element 30 is made of a resin plate having a thickness of 10 mm and made of a waste resin material, and has an overlap 32 integrally protruding from a side end. The overlapping margin 32 reduces the overlapping surface (the upper surface in this example) to half (5 mm) of the thickness so that when the overlapping bottom 32 of the concave bottom stencil element 31 is overlapped with the residual margin 32, there is no step. ing. FIG.
As shown in (f), a packing material 33 made of a foamed resin foam or the like is attached to the edge of the convex bottom slab element 30 on the sheet pile wall 5 side. In addition, two stopper holes 34 are provided in the vicinity of the edge of the projecting bottom plate element 30 on the sheet pile wall 5 side, and as shown in FIG. The convex bottom plate element 30 is stopped by applying the nut 17 screwed to the bottom surface of the convex bottom plate element 30.

Next, as shown in FIG.
The side of the river side wall 43 of 0 is flipped up and temporarily stopped in the flipped state. In the illustrated example, a temporary fixing member 35 such as a wire is used.
Is temporarily fixed to the sheet pile wall 5 or the first support 10 by hooking the lower end of the temporary fixing member 35 to the lower surface of the convex bottom slab element 30. Not limited. Thus, the river side wall 43 of the convex bottom plate element 30
The reason why the side is flipped upward is to prevent the receiving member 45 of the river side wall 43 from hitting the edge of the convex bottom slab element 30 on the side of the river side wall 43 at the time of the next installation of the concrete block 40. .

Next, as shown in FIG. 2, FIG. 3, FIG. 6, and FIG. 7 (a), a large number of PCa cap concrete blocks 40 produced at the factory are installed on the upper end of the sheet pile wall 5 as a formwork. Abut or engage 47 comrades. The cap concrete block 40 is a U-shaped face-down having a top end wall 41, a shore side wall 42, and a river side wall 43.
Reference numeral 1 denotes only a part of the entire length of the shade concrete block 40, and the rest is a ceiling opening 44. The length of one sheet pile 1 (from the engaging claw 4 at one end to the engaging claw 4 at the other end)
In most cases, the length of one PCa cap concrete block 40 is, for example, 2000 mm or 2400 m.
m. Before installation at the factory or on site, the river side wall 4
A receiving member 45 made of, for example, an angle material is attached to a lower end of the third member 3 with a screw 46 so as to protrude toward the sheet pile wall 5. At the time of installation, the concrete block 40 is lifted by a crane or the like and lowered directly above the sheet pile wall 5.
1 is the top of the head adjusting bolt 14 of the first support 10 above the overhanging inner surface 2 and the head of the height adjusting bolt 24 of the second support 20 is above the overhanging outer surface 3. By placing it on the top surface, install it so that it does not rotate. After the installation, crushed stones between the lower end of the shore side wall 42 and the ground of the shore A,
Fill stone 6 such as river sand.

Next, as shown in FIG. 3, the temporary fixing member 35 is removed, and the convex bottom plate element 3 which has been flipped up to then is removed.
The edge on the side of the river side wall 43 of No. 0 is lowered, and is received and supported by the receiving tool 45. Thus, the convex bottom plate element 3
When 0 is horizontal, the packing material 33 on the sheet pile wall 5 side of the convex bottom slab element 30 hits the sheet pile wall 101 to achieve sealing.

Next, as shown in FIGS. 3 and 4, a concave bottom plate element 31 corresponding to one convex shape of the sheet pile wall 5 is set side by side on the convex bottom plate element 30. As shown in FIG. 10, the concave bottom slab element 31 has a thickness of 10
It is made of a resin plate having a width of 32 mm, and a margin 32 is integrally protruded from a side end portion. This overlapping margin 32 reduces the overlapping side surface (the lower surface in this example) to １ ／ (5 mm) of the thickness so that when overlapping the overlapping margin 32 of the convex bottom stencil element 30, there is no step with the remainder. are doing. A packing material 33 made of a foamed resin foam or the like is attached to the edge of the concave bottom slab element 31 on the sheet pile wall 5 side. Then, the overlap 32 of the concave bottom plate element 31 is changed to the overlap margin 3 of the convex bottom plate element 30.
2 is slidably superimposed (mounted), and the edge of the concave bottom slab element 31 on the river side wall 43 side is received and supported by the receiving tool 45. In addition, the concave bottom plate element 31
Although the edge on the river side wall 43 side is not particularly supported, since the concave bottom slab element 31 has a small width and the overlap margins 32 at both ends are placed on the overlap margin 32 of the convex bottom slab element 30, it is not supported. There is no problem of the packing material 33 and the sheet pile wall 10
At the time of 1, the seal is achieved.

Next, as shown in FIGS. 5 and 7 (b),
Filling concrete C is cast on site from the top opening 44 of the cap concrete block 40 into the internal space, and is poured until it is substantially flush with the upper surface of the top end wall 41. Since the bottom between the sheet pile wall 5 and the shore side wall 42 in the internal space is closed by the earth and sand stone 6, the filled concrete C hardly leaks.
Further, the bottom between the sheet pile wall 5 and the river side wall 43 in the internal space is closed by a convex bottom plate element 30 and a concave bottom plate element 31, and in particular, the convex bottom plate element 30 and the concave bottom plate element 31 are provided. The gap between the edge of the sheet pile wall 5 side and the sheet pile wall 101 is sealed with a packing material 33, and the gap between the edge of the convex bottom plate element 30 and the concave bottom plate element 31 on the river side wall 43 side and the receiving member 45 is filled. The concrete C is tightly sealed by the weight of the concrete C and the gap 32 between the convex bottom slab element 30 and the concave bottom slab element 31 is also tightly sealed by the weight of the solid concrete C, so that the solid concrete C does not leak. . The convex bottom slab element 30 and the concave bottom slab element 31
Is left unremoved even after striking the site (so-called burying).

According to the concrete structure of the present embodiment constructed as described above, the following operations and effects can be obtained. At the actual site, the driving accuracy of the steel sheet pile 1 is low and the sheet pile wall 5 is not always uniform or inclined, and as a result, the uneven shape of the sheet pile wall 5 is not always accurate to a constant dimension and a constant pitch. In the present embodiment, the closing means for closing the bottom between the sheet pile wall 5 and the river side wall 43 in the internal space is provided by the cap concrete block 4.
0 and the convex bottom plate element 30 and the concave bottom plate element 31 formed separately are arranged side by side while the overlapping margins 32 provided at their side ends are slidably overlapped. By changing the overlapping length etc. by sliding the overlapping margins 32 as appropriate, the convex bottom plate element 3
The zero and concave bottom slab elements 31 can be flexibly matched to the irregularities (undefined dimensions and undefined pitches) of the sheet pile wall 5 at the site. Therefore, no gap is formed between the sheet pile wall 5 and the packing material 33 of the convex bottom slab element 30 and the concave bottom slab element 31, and the filled concrete C that has been cast in place does not leak.

In addition, the sheet pile wall 5 at the actual site has not only a straight part but also a curved part when viewed from above. On the other hand, the shade concrete block 40 is straight in the longitudinal direction. However, in this embodiment, the convex bottom plate element 30
By changing the overlapping angle and the like by appropriately sliding the overlap 32 between the bottom plate element 31 and the concave bottom plate element 31, the convex bottom plate element 30 and the concave bottom plate element 31 can be flexibly fitted to the curved portion of the sheet pile wall 5. Therefore, a large gap can be prevented from being formed between the sheet pile wall 5 and the packing material 33 in the cap concrete block 40 installed at the curved portion, and even if the gap is formed, it is small.
There is no hassle in the closing process. In addition, although the block end faces 47 of the cap concrete block 40 that abut or engage at the curved portion tend to be open, a packing material is interposed on the block end faces 47 or a socket having a large engagement margin is provided. It is possible to deal with it.

The types of the steel sheet pile 1 are various,
The dimensions and pitch of each concave and convex shape are also different. But,
In this embodiment, the convex bottom slab element 30 corresponding to each steel sheet pile is used.
And the concave bottom slab element 31 may be prepared, and if one or a small number of types of concrete blocks 40 are factory-produced, it is possible to cope with all steel sheet piles. , Storage space for blocks, etc. are significantly reduced.

Further, the edge of the convex bottom plate element 30 on the sheet pile wall 5 side is suspended and supported by being fixed to the lower end of the hanging tool 16 hanging from the upper end of the sheet pile wall 5, and the convex bottom plate element 30 is supported.
And the edge of the concave bottom slab element 31 on the river side wall side is
Since the convex bottom plate element 30 and the concave bottom plate element 31 are supported by a simple means of receiving and supporting them by receiving them at a receiving member 45 provided at the lower end portion of the sheet 3, the gap between the sheet pile wall 5 and the river side wall 43 is provided. Can be closed with good workability.

When installing the cap concrete block 40, the height adjusting bolts 14, 24
Is adjusted, and the height of the top of the head of the height adjustment bolts 14, 24 with respect to the upper end surface of the sheet pile wall 5 is set to, for example, 100.
mm, and if there is variation in the level of the upper end surface of the sheet pile wall 5, the heights of the head top surfaces of the height adjusting bolts 14, 24 are made uniform in consideration of the variation. Then, the top end wall 41 is connected to the top surface of the head adjusting bolt 14 of the first support 10 above the overhanging inner surface 2 and the height of the second support 20 above the overhanging outer surface 3. By simply placing it on the top surface of the head of the adjustment bolt 24, the shade concrete block 40 can be installed easily and accurately (especially, the accuracy in the height direction can be increased) without rotating.

As described above, the first support 10 has the flat portion 11 on the upper end surface of the sheet pile wall 5 and the bent portion 12 fitted on the upper end portion of the sheet pile wall 5. The support 10 does not shift even when an external force is applied, and does not shift when the block is installed. Further, since the second support 20 grasps the upper end two sides of the bent corner of the sheet pile wall 5 with the base 21 and the pair of claws 22, the second support 20 after the hooking is applied even if an external force is applied. It does not shift, and does not shift at the time of block installation described later.

The effect of PCa, that is, the quality of the concrete block is stable, labor saving and
Naturally, it can save labor and shorten the construction period, does not require formwork and rebar work, can be installed without a workbench on the river side, and can be installed even if the water level rises to a certain extent. Play.

Next, FIGS. 11 to 14 show first to fourth modifications of the above-described embodiment, respectively. FIG.
In one form of the first modified example shown in FIG. 4A, a hook 16 a formed at the upper end of the hanging member 16 is connected to the reinforcing bar 4 that appears on the top end wall 41 (or the top opening 44) of the cap concrete block 40.
This embodiment is a modification of the above-described embodiment in that it is stopped by hooking on the hook 8. The illustration of the first support and the second support is omitted. In the present modified example, the procedure is such that the shade concrete block 40 on which the convex bottom slab element 30 is set is lowered and installed on the sheet pile wall 5, so that the convex bottom slab element 30 side of the convex bottom slab element 30 as shown by a two-dot chain line. It is preferable that the convex bottom plate element 30 be leveled after installation with the edge of the panel being flipped up. At this time, the hook portion 16a is
It is preferable to be able to slide with respect to.

In another embodiment of the first modified example shown in FIG. 11B, a hanging tool 16 is provided by mounting an elongate hole 5 of a board 49 appearing on a top end wall 41 (or a top opening 44) of a cap concrete block 40.
This embodiment differs from the embodiment of FIG. 2A only in that the nut 18 threaded to the upper end of the hanging member 16 is brought into contact with the upper surface of the board 49 and stopped.

A second modified example shown in FIG. 12 is a convex bottom plate element 30 and a concave bottom plate element in which the edge on the river side wall 43 side is formed integrally with the lower end of the river side wall 43 by concrete at the time of PCa. At the point of receiving and supporting the receiving portion 51,
This is a modification of the above embodiment.

In the third modification shown in FIG. 13, the edges of the convex bottom plate element 30 and the concave bottom plate element on the river side wall 43 side are fixed to the convex receiving portion 51 by, for example, screws 52 and cantilevered. This embodiment is a modification of the above-described embodiment in that the edge on the sheet pile wall side of the convex bottom slab element 30 and the concave bottom slab element is not particularly stopped (hanging members are omitted).

It should be noted that the present invention is not limited to the above-described embodiment, and can be embodied by appropriately changing the scope of the invention as follows, for example, as follows. (1) The convex bottom plate element 30 and the concave bottom plate element 31 are provided with reinforcing ribs so that their thickness can be reduced. (2) An uneven bottom plate element which simultaneously corresponds to one concave shape of the sheet pile wall and one convex shape adjacent thereto, that is, one of the convex bottom plate elements 30 and one of the concave bottom plate elements 31 are integrally formed laterally. To form a bottom plate by arranging a large number of bottom plate elements of the shape

[0039]

According to the concrete structure of the present invention, it is possible to cope with many kinds of steel sheet piles by producing only a small number of concrete blocks at the factory, and at the actual work site. The bottom between the sheet pile wall and the river side wall of the shank concrete block can be closed without any gaps, responding flexibly to the irregularity of the unevenness of the wall and the curved part, and hitting the spot in the meantime Leakage of filled concrete can be prevented.
In addition, according to the concrete structure of the shank concrete according to the second aspect of the present invention, it is possible to cope with many kinds of steel sheet piles only by manufacturing a small number of shank concrete blocks in a factory, and the river wall of the sheet pile wall and the shank concrete block. The bottom between
It can be closed with good workability. Next, according to the shade concrete construction structure according to the third aspect of the invention, it is possible to obtain both the effect of the first aspect of the invention and the effect of the second aspect of the invention.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a state in which a first support and a second support are attached to a sheet pile wall and a convex bottom slab element is attached to a hanging tool in an embodiment of the present invention, and FIG. It is an expansion perspective view.

FIG. 2A is a perspective view when the edge on the river side wall side of the convex bottom plate element is flipped up in the same embodiment, and FIG. 2B is a partially enlarged perspective view thereof.

FIG. 3 (a) is a perspective view of the embodiment in which a cap concrete block is mounted on the upper end of a sheet pile wall, and then the convex bottom slab element is lowered and supported by a receiver; FIG. 3 (b) is a partially enlarged view of FIG. It is a perspective view.

FIG. 4A is a perspective view when a concave bottom plate element is provided side by side with a convex bottom plate element in the embodiment, and FIG. 4B is a partially enlarged perspective view thereof.

FIG. 5 is a perspective view when the filling concrete is cast on site in the interior space of the cap concrete block in the embodiment.

FIG. 6 is a plan view of the shade concrete construction structure (before casting the filled concrete) in the same embodiment.

7 (a) is a cross-sectional view when the concrete block is lowered in FIG. 2 (a), and FIG. 7 (b) is a cross-sectional view in FIG.

FIG. 8 shows a second support used in the embodiment,
(A) is a front view, (b) is a rear view, (c) is a left side view,
(D) is a plan view, (e) is a bottom view, and (f) is a perspective view.

FIG. 9 shows a convex bottom plate element used in the embodiment;
(A) is a front view, (b) is a rear view, (c) is a left side view,
(D) is a plan view, (e) is a bottom view, and (f) is a perspective view when a packing material is attached.

FIG. 10 shows a concave bottom plate element used in the embodiment;
(A) is a front view, (b) is a rear view, (c) is a left side view,
(D) is a plan view, (e) is a bottom view, and (f) is a perspective view when a packing material is attached.

FIGS. 11A and 11B show a first modification of the embodiment, in which FIG. 11A is a cross-sectional view of one embodiment, and FIG. 11B is a cross-sectional view of another embodiment.

FIG. 12 is a cross-sectional view showing a second modification of the embodiment.

FIG. 13 is a cross-sectional view showing a third modification of the embodiment.

14A is a plan view of a conventional concrete cap block, FIG. 14B is a side end view of the same concrete block, and FIG. 14C is a cross-sectional view of a cap concrete construction structure using the same concrete block. is there.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 steel sheet pile 2 overhanging inner surface 3 overhanging outer surface 5 sheet pile wall 10 first support 14 height adjustment bolt 16 suspension 20 second support 24 height adjustment bolt 30 convex bottom slab element 31 concave bottom slab element 33 packing material 40 Shade concrete block 41 Top end wall 42 Shore side wall 43 River side wall 44 Top opening 45 Receiver 48 Reinforcement 49 Board 51 Receiver

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akinori Miura 10th Meitokucho, Gifu City, Gifu Prefecture Inside Showa Concrete Industries Co., Ltd. Inside the Industrial Co., Ltd. (72) Inventor Tokunari Sugiyama 10th, Meitoku-cho, Gifu City, Gifu Prefecture Inside of the Showa Concrete Industries Co., Ltd. (72) Inventor Hiroshi Ono 10 Meitoku-cho, Gifu City, Gifu Prefecture Inside Showa Concrete Industry Co., Ltd. (72) Inventor Noboru 10 Meitoku-cho, Gifu City, Gifu Prefecture Showa Concrete Industry F-term 2D018 BA15 2D049 FB03 FB12

Claims (13)

[Claims] 1. A downcast U-shaped precast shade concrete block having a top end wall, a shore side wall, and a river side wall,
After being installed at the upper end of the sheet pile wall, in a cap concrete construction structure in which the filling concrete is poured into the interior space of the cap concrete block in-situ, the bottom between the sheet pile wall and the river side wall in the internal space is constructed. A plurality of bottom plate elements corresponding to the concave or convex shape of a part of the sheet pile wall formed separately from the cap concrete block are provided at the side end portions of the bottom plate elements. The shade concrete construction structure, which is constructed by arranging and slidably stacking. 2. A face-down U-shaped precast shade concrete block having a top end wall, a shore side wall, and a river side wall,
After being installed at the upper end of the sheet pile wall, in a cap concrete construction structure in which the filling concrete is poured into the interior space of the cap concrete block in-situ, the bottom between the sheet pile wall and the river side wall in the internal space is constructed. The closing means for closing is formed by a bottom slab formed separately from the shank concrete block and conforming to the uneven shape of the sheet pile wall, and the edge of the bottom slab on the sheet pile wall side is formed at the upper end portion of the sheet pile wall or the shank concrete block. It is suspended and supported by being fixed to the lower end of the hanging tool hanging down from the upper part, and receiving and supporting the edge of the bottom slab on the river side wall side by receiving it at a receiving portion provided at the lower end of the river side wall. A distinctive shade concrete construction. 3. A downcast U-shaped precast shade concrete block having a top end wall, a shore side wall, and a river side wall,
After being installed at the upper end of the sheet pile wall, in a cap concrete construction structure in which the filling concrete is poured into the interior space of the cap concrete block in-situ, the bottom between the sheet pile wall and the river side wall in the internal space is constructed. A plurality of bottom plate elements corresponding to the concave or convex shape of a part of the sheet pile wall formed separately from the cap concrete block are provided at the side end portions of the bottom plate elements. Are slidably overlapped and arranged side by side, and suspended by fixing the edge of the bottom slab element on the sheet pile wall side to the upper end of the sheet pile wall or the lower end of the hanging tool hanging from the upper part of the shank concrete block. A shank concrete construction structure comprising: supporting and supporting an edge of the bottom slab element on a river side wall by a receiving portion provided at a lower end portion of the river side wall. 4. The shade according to claim 1, wherein the bottom plate element comprises a convex bottom plate element corresponding to one concave shape of the sheet pile wall and a concave bottom plate element corresponding to one convex shape of the sheet pile wall. Concrete work structure. 5. The shade concrete construction structure according to claim 1, wherein the overlapping margin of the bottom slab element reduces the overlapping surface to １ ／ of the thickness. 6. The concrete shaping structure according to claim 2, wherein an upper end of the hanging tool is hooked directly on an upper end of the sheet pile wall and is directly stopped. 7. The concrete shaping structure according to claim 2, wherein the upper end of the hanging member is fixed to a support attached to the upper end of the sheet pile wall. 8. The concrete construction structure according to claim 2, wherein an upper end portion of the hanging member is fixed to a reinforcing bar or a board that appears on a top end wall or a ceiling opening of the concrete block. 9. The shade concrete structure according to claim 2, wherein the receiving portion is a receiving device attached to a lower end portion of the river side wall. 10. The shade concrete construction structure according to claim 2, wherein the receiving portion is a convex receiving portion integrally formed of concrete at a lower end portion of the river side wall. 11. The bottom plate element or bottom plate material is a resin plate,
A wood board, a paper board, an inorganic board or a metal board,
The shade concrete construction structure according to 2 or 3. 12. The shade concrete construction structure according to claim 1, wherein the bottom plate element or the bottom plate material is a resin plate made of a waste resin material. 13. The bottom slab element or bottom slab is left unremoved even after casting the filled concrete in place.
Or the shade concrete construction structure according to 3.