JP2000303453A - Coping concrete structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance stability of a brace with a level adjusting bolt to be attached to the upper end of a sheet pile wall and prevent the brace from slanting or coming off during the installation of the coping concrete block. SOLUTION: After a coping concrete block 40 is installed on the upper end of a sheet pile wall 5, filling concrete is placed at the site to construct a coping concrete structure. In this structure, a first brace 10 provided with a planar part 11, a folded part 12, and a level adjusting bolt 14 is fitted to the upper end of the sheet pile wall 5 and a second brace 20 provided with claws 22 forming a pair with the basal part and a level adjusting bolt 24 are hooked on the upper end of a bent corner of the sheet pile wall 5. A top end wall 41 is put on the top face of the heads of the level adjusting bolts 14, 24 and then, the coping concrete block 40 is put thereon.

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. 13, a Ua-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. Sheet pile wall 101 in the internal space
Between the shore and the shore side wall 92, the bottom thereof is closed by earth and sand stone 103 such as crushed stone on the shore, river sand, etc., and the sheet pile wall 101 of the internal space.
The bottom between the river side wall 93 and the river side wall 93 is closed by an uneven bottom wall 94 integrally formed at the lower end of the river side wall 93. Reference numeral 95 denotes a packing material attached to the protruding end of the uneven bottom wall 94.

However, in order to mount the cap concrete block 90 on the upper end of the sheet pile wall 101, a large number of block fittings 96 are welded to a predetermined height position of the sheet pile wall 101, and the shore side wall 92 is attached to the block receiving fitting 96. And river side wall 9
The installation work was very troublesome because it was necessary to place the lower end face of No.3. Also, a large number of block fittings 96
It is difficult to weld the concrete blocks 90 at the same height, so that it is difficult to secure the installation accuracy (particularly, the accuracy in the height direction) of the cap concrete block 90.

In Japanese Patent No. 2775597, as shown in FIG. 14, a clip portion 111 formed by bending a small steel plate into an inverted U-shape and a nut 112 fixed to the clip portion 111 on the peripheral side surface are disclosed. And the nut 112
Support 11 comprising a height adjustment bolt 113 screwed into
Shade concrete construction using 0 has been proposed.
This clip part 111 is hooked on the upper end of the sheet pile wall 101,
After adjusting the height of the top surface of the head by adjusting the amount of screwing of the height adjustment bolt 113, the top end wall 91 is placed on the top surface of the head of the height adjustment bolt 113, so that the concrete block is shaded. 90 can be easily and accurately installed.

[0006]

However, the shade concrete construction of Japanese Patent No. 2775597 also has the following problems. When the cap concrete block 90 is installed, when the top end wall 91 comes into contact with the top surface of the head of the height adjusting bolt 113 and then the cap concrete block 90 is shifted for a position adjustment or suddenly, the height adjusting bolt 113 is moved. Is moved and tilted, or when the tilt is large,
May be detached from the upper end of the sheet pile wall 101 and installation may fail. This is because the clip portion 111 formed by bending a small steel plate into an inverted U-shape has insufficient stability. The publication discloses a clip section 111
There is a statement that the support is made stable by forming it with a wide plate material, but that also has its limitations.

When it is desired to further adjust the height of the concrete block 90 after the concrete block 90 is installed on the upper end of the sheet pile wall 101, the concrete block 90 is once lifted, and the top end wall 91 is bolted with the height adjusting bolt. It is necessary to adjust the amount of screwing of the height adjusting bolt 113 after separating from the head of 113, which is very troublesome.

Accordingly, a first object of the present invention is to enhance the stability of a support with a height adjusting bolt attached to the upper end of a sheet pile wall, and to prevent the support from tilting or falling off when a concrete block is installed. It is an object to provide a concrete shaping structure. A second object of the present invention is to provide a concrete shaping structure in which after the concrete block is mounted on the upper end of the sheet pile wall, the height of the concrete block can be easily adjusted without lifting the block. Is to do.

[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.
After installing a precast cast concrete block in the shape of a letter at the upper end of the sheet pile wall, the concrete structure is constructed by casting the filled concrete in the space inside the cast concrete block. A flat portion placed on the upper end surface of the sheet pile wall, a bent portion that bends the periphery of the flat portion downward and fits on the upper end portion of the side surface of the sheet pile wall, and a female screw provided on the flat portion, A support tool having a height adjusting bolt screwed into the female screw is fitted to the upper end of the sheet pile wall, and the top end wall is placed on the top surface of the head of the height adjusting bolt, thereby removing the cap concrete block. It is characterized by installation.

(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 the shank concrete construction structure, which is constructed by installing a precast shank concrete block in the shape of a letter at the upper end of the sheet pile wall and then pouring the filling concrete into the interior space of the shank concrete block, the sheet material (preferably a metal plate) A base formed by bending the lower half into a flat rectangular shape, a pair of claws formed by dividing the upper half of the plate material into two branches and bending downward, and a female screw provided on the base, A support tool having a height adjustment bolt screwed into a female screw is hung on the upper end portion of the bent corner of the sheet pile wall, and the top end wall is placed on the top surface of the head of the height adjustment bolt. It is characterized by installing a shade concrete block.

(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.
The first support with a flat part in the shank concrete construction structure where the precast shank concrete block shaped like a letter is installed on the upper end of the sheet pile wall, and then the filling concrete is poured into the interior space of the shank concrete block. A tool is attached to an upper end of the sheet pile wall, and a lower end of a height adjusting bolt screwed into an anchor nut of the top end wall from above the top end wall is mounted on the flat portion to mount the concrete cap block. And

In each of the means (1), (2) and (3),
The following embodiments can be exemplified. Examples of the female screw of the support include a female screw of a nut fixed to the flat surface or the base by welding, crimping, bonding, or the like, and a female screw hole directly threaded on the flat surface. -A bolt engaged with the sheet pile wall and a bolt engaged with the shore side wall are screwed into a turnbuckle, and the relative position between the sheet pile wall and the concrete block can be adjusted by turning the turnbuckle. The bolts to be fastened to the sheet pile wall may be fixed to or screwed to the support so as to be fastened to the sheet pile wall via the support. -Means (1) and (2) can be combined as in the first embodiment.

[0014]

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 protrude into a flat trapezoidal shape at a boundary between a shore A and a river B on the riverbank are provided with an inner protruding surface 2. 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 plate 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 that point 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 shade concrete construction structure of the present embodiment configured 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.

Further, 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.

Also, 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 slab 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 slab 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.

Before installing the shading 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 when the block is installed (particularly,
After the top end wall 41 comes into contact with the top surface of the head of the height adjustment bolt 14, the cap concrete block 40 does not tilt or come off for position adjustment or when it is suddenly shifted. The second support 20 includes a base 21 and a pair of claws 2.
2 grasps the two upper ends of the bent corner of the sheet pile wall 5, so that the second support member 20 after being hooked does not shift even if an external force is applied, and the second support member 20 is inclined or detached even at the time of block installation (the same as above). Do not.

The effect of PCa, that is, the quality of the cap concrete block is stable.
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 and 12 show first and second modifications of the above embodiment, respectively. In the first modification shown in FIG. 11, the first support tool 10 straddling the overhanging inner surface 2 is fitted to the upper end of the sheet pile wall 5 and the first support tool 10 straddling the overhanging outer surface 3 is sheet pile. The lower ends of the height adjusting bolts 54 fitted to the upper end of the wall 5 (the second support is not used) and screwed from above the top end wall 41 to the anchor nuts 53 of the top end wall 41 are attached to the respective first supports. This embodiment is a modification of the above-described embodiment in that the cap concrete block 40 is installed by mounting the concrete block 40 on the flat surface portion 10 of FIG. The first support 10 includes a flat portion 11 and a bent portion 1.
2, the nut 13 and the height adjusting bolt 14
I do not have. According to the present modification, the amount of screwing of the height adjusting bolt 54 can be adjusted from above the top end wall 41, so that the shank concrete block 4 is provided at the upper end of the sheet pile wall 5.
After the 0 is installed, the height of the block 40 can be easily adjusted without lifting the block 40.

In a fourth modification shown in FIG. 12, a bolt 61 with a hook 60 is hooked on the upper end of the sheet pile wall 5 and is engaged therewith, and the anchor nut 6 embedded in the bolt 61 and the shore side wall 42 is provided.
2 is screwed into a turnbuckle 64, and by turning the turnbuckle 64, the cap concrete block 40 is displaced toward the shore or the river. The embodiment is modified in that the relative position can be adjusted. Further, the bolt 61 is connected to the hook 6
0 is fixed to the flat portion 11 or the bent portion 12 of the first support 10 instead of omitting the sheet pile 5 through the first support 10.
May be engaged.

It should be noted that the present invention is not limited to the above-described embodiment, and can be embodied with appropriate modifications without departing from the spirit of the invention.

[0034]

According to the concrete construction of the cap according to the first or second aspect of the present invention, the stability of the support with the height adjusting bolt attached to the upper end of the sheet pile wall is enhanced, and the concrete block for the cap is installed. The support can be prevented from tilting or detaching, and the installation operation can be performed without any trouble. Further, according to the concrete structure of the cap according to the third aspect of the present invention, the height of the block can be easily adjusted without mounting the block after the concrete block is set on the upper end of the sheet pile wall. it can.

[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.

13A is a plan view of a conventional concrete cap block, FIG. 13B is a side end view of the same concrete block, and FIG. 13C is a cross-sectional view of a concrete cap structure using the same concrete block. is there.

FIG. 14A is a cross-sectional view of another conventional concrete cap construction structure, and FIG. 14B is a perspective view of a support used in the same concrete construction structure.

[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 11 flat portion 12 bent portion 13 nut 14 height adjustment bolt 20 second support 21 base 22 claw portion 23 nut 24 height adjustment bolt 40 Shade concrete block 41 Top end wall 42 Shore side wall 43 River side wall 44 Top opening

 ──────────────────────────────────────────────────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 Meiroku-cho, Gifu City, Gifu Prefecture Showa Concrete Industry Co., Ltd. 2D018 BA15 EA01 2D049 EA03 FB03 FB12 FC03

Claims (7)

[Claims] 1. A downcast U-shaped precast shade concrete block having a top end wall, a shore side wall, and a river side wall,
In a shank concrete construction structure which is constructed by installing a fill concrete in the interior space of the shank concrete block after being installed at the upper end of the sheet pile wall, a flat portion made of sheet material and placed on the upper end surface of the sheet pile wall; A support having a bent portion which is formed by bending the periphery of the lower portion downward and fitted to the upper end of the side surface of the sheet pile wall, a female screw provided on the flat portion, and a height adjusting bolt screwed with the female screw. A shank concrete construction structure, wherein the shank concrete block is installed by fitting a tool to an upper end of the sheet pile wall and placing the top end wall on a top surface of a head of a height adjusting bolt. 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 installing on the upper end of the sheet pile wall, in the cap concrete construction structure which is constructed by casting the filling concrete in the interior space of the cap concrete block, the lower half of the plate material is bent into a flat rectangular shape, A support having a pair of claws formed by dividing an upper half of the plate material into two branches and bending downward, a female screw provided on the base, and a height adjusting bolt screwed to the female screw. And the top concrete wall is mounted on the top of the head of a height adjusting bolt to mount the concrete block. 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 that is constructed by casting a filling concrete in the interior space of the cap concrete block, a support having a flat portion is attached to the upper end of the sheet pile wall, A cap concrete construction structure, wherein the cap concrete block is installed by placing a lower end of a height adjusting bolt screwed into an anchor nut of the top wall from above the top wall on the flat portion. 4. The shade concrete structure according to claim 1, wherein the female screw of the support is a female screw of a nut fixed to the flat portion or the base. 5. The shade concrete construction structure according to claim 1, wherein the female screw of the support is a female screw hole directly threaded into the flat portion. 6. A bolt engaged with the sheet pile wall and a bolt engaged with the shore side wall are screwed into a turnbuckle, and the turnbuckle is turned to adjust a relative position between the sheet pile wall and the shank concrete block. The shade concrete construction structure according to claim 1, 2 or 3, wherein 7. A shank concrete construction according to claim 6, wherein the bolts for engaging with the sheet pile wall are fixed or screwed to the support, thereby engaging with the sheet pile wall via the support. Construction.