JPH0625410B2 - Cap concrete block for steel sheet pile wall - Google Patents

Description

TECHNICAL FIELD The present invention relates to a shade concrete block for steel sheet pile wall.

[Prior Art] Conventionally, a steel sheet pile wall in which U-shaped steel sheet piles are generally piled up with their claw portions engaged with each other has been used as a quay wall of a sea, a river or the like, or a retaining wall on the ground. It

A cap concrete block is provided on the upper part of the steel sheet pile wall to improve the appearance. This shade concrete block has vertical and horizontal rebars fixed to the upper part of the steel sheet pile wall in a cage shape.After setting the concrete formwork on the outer periphery, concrete is placed in the concrete formwork, and after hardening It is formed by removing the frame.

However, in this way, after setting the concrete formwork on the top of the steel sheet pile wall, when placing concrete in the concrete formwork, the reinforcement work of the concrete formwork and the concrete formwork of complicated shape There was a drawback that it took a lot of time to install and remove.

Then, in order to eliminate such a defect, Japanese Patent Laid-Open No.
In Japanese Patent No. 154227, a cap concrete block to be attached to the upper end of a steel sheet pile wall is molded in advance, and the cap concrete block is assembled with fastening bolts at a construction site, thereby omitting installation and removal of the concrete formwork after construction. A possible retaining wall construction method is proposed.

[Problems to be Solved by the Invention] In the conventional method for constructing a retaining wall, two flat plate-shaped precast plates in which a spacer concrete block is integrally projectingly provided on an inner surface of a cap concrete block attached to an upper end portion of a steel sheet pile wall. The spacers of each precast plate are abutted against each other, and the gap between each precast plate is set wider than the width of the steel sheet pile wall by the fastening bolts. The steel sheet pile wall and the concrete block are integrated by inserting the steel sheet pile wall so that the upper end of the steel sheet pile wall fits in the lower gap and placing concrete in the gap between the precast plates. The bottom of the
Before the concrete is placed between the precast plates, it is necessary to close the lower opening of the cap concrete block with a sealing material, and the sealing material is loaded with the concrete filled between the precast plates. Is required to have the strength to withstand the load of concrete, and it is necessary to use a relatively thick sealing material, but this thick sealing material narrows the space for filling the concrete, and in the conventional example, it projects on the inner surface of the precast plate. The spacer is placed on the upper edge of the steel sheet pile wall and the precast plate is attached to the steel sheet pile wall.Therefore, the space filled with concrete is narrow, surrounded by the precast plate below the spacer and the steel sheet pile wall. It is a space, and moreover, the sealing material is installed in the narrow space of the shade concrete block. Since closing the side opening, the space filling concrete becomes extremely narrow, there is a surface that can not be tightly integrated with the steel sheet pile wall and the precast plate by concrete filled in the space. Also,
Since the spacers protruding from the inner surface of each precast plate are abutted to set the gap between each precast plate to be wider than the width of the steel sheet pile wall, the position before and after the precast plate with respect to the steel sheet pile wall is not fixed, and it is necessary to carry out the construction. , It is also necessary to assemble the individual shade concrete blocks while adjusting the positions so that the shade concrete blocks to be aligned are aligned.
Due to such troublesome positioning work of the shade concrete block, the problem of poor workability remains.

It is an object of the present invention to solve the above problems and provide a shade concrete block for a steel sheet pile wall that can tightly integrate the shade concrete block and the steel sheet pile wall and can simplify the construction work on site. .

MEANS FOR SOLVING THE PROBLEM The present invention is a steel sheet pile wall in which a large number of steel sheet piles are continuously cast by mutually engaging the claw portions formed at both end portions and these steel sheet piles are continuously formed in an uneven shape. In a steel sheet pile wall shade concrete block configured to attach a shade concrete block to the upper portion of the steel sheet pile wall, a shade concrete block one side portion and a shade concrete block other side portion consisting of precast with the steel sheet pile wall interposed Fixing means for assembling and fixing the one side portion of the cap concrete block, the other side portion of the cap concrete block and the steel sheet pile wall, which are arranged facing each other, and the recess of the steel sheet pile wall at the lower end portion of each cap concrete block. The bottom plate part that almost runs along the inner wall of the concrete block and the cavity surrounded by the steel sheet pile wall are filled with filler. Of.

[Operation] When one side portion of the shade concrete block and the other side portion of the shade concrete block are arranged on both sides of the steel sheet pile wall and assembled and fixed to the steel sheet pile wall by the fixing means, the inner circumference of the one side portion and the shade concrete block other side portion A cavity surrounded by the surface, the bottom plate and the steel sheet pile wall is formed.When the filler is filled in the cavity, the bottom opening of the cavity is closed by the bottom plate, and the filler leaks downward. Is prevented. Then, the filling material in the hollow portion integrates the one side portion and the other side portion of the cap concrete block with the steel sheet pile wall.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 to 3 show a first embodiment, in which 1 is a steel sheet pile, and a steel sheet pile wall 3 is formed by continuously placing the steel sheet piles with engaging claw portions 2. The upper portion 4 of the steel sheet pile wall 3 is set to be substantially level with the water surface 5. A shade concrete block 6 is provided on the upper portion 4 of the steel sheet pile wall 3. This shade concrete block 6 is a steel sheet pile wall 3
The one side portion 7 of the cap concrete block arranged on one side and the other side portion 8 of the cap concrete block arranged on the other side of the steel sheet pile wall 3, and the one side portion 7 and the concrete block of the cap concrete block. The other side portion 8 is formed by a factory or the like by precasting. The one side portion 7 of the shade concrete block is a side plate portion 7B extending along one side of the steel sheet pile wall 3, and a top plate portion 7C and a side plate projecting from the upper end portion of the side sheet portion 7B toward the steel sheet pile wall 3 side. At the lower end of the portion 7B, there is a bottom plate portion 7D facing the recess 1A formed in the steel sheet pile wall 3 and smaller than the recess 1A. Then, the top plate portion 7C is placed on the upper end portion of the steel sheet pile wall 3, and the bottom plate portion 7D is fitted into the recess 1A of the steel sheet pile wall 3 so that the cap concrete block one side portion 7 is attached to the steel sheet pile wall 3.
When assembled on the one side cavity portion 7A surrounded by the inner peripheral surfaces of the top plate portion 7C and the bottom plate portion 7D of the side plate portion 7B and the steel sheet pile wall 3.
Is formed. Similarly, the other side portion 8 of the shade concrete block is also provided with a top plate portion 8C and a recess 1 above and below the side plate portion 8B.
A bottom plate portion 8D facing B is integrally provided, and forms a side plate portion 8B, a top plate portion 8C, a bottom plate portion 8D and the other side cavity portion 8A surrounded by the steel sheet pile wall 3. In addition, in this example, the top plate portion 8C and the bottom plate portion 8D of the other side portion 8 of the shade concrete block are in contact with the steel sheet pile wall 3 so that the top plate portion 7C and the bottom plate portion of the one side portion 7 of the shade concrete block are formed. Form shorter than 7D. A gap 9 is formed between the top plate portions 7C and 8C into which a filling material described later is put.

Reference numeral 10 denotes a filling concrete, a mortar, etc. which is placed in the hollow portions 7A, 8A on one side and the other side with the one side portion 7 of the concrete block and the other side portion 8 of the concrete block fixed to the steel sheet pile wall 3. Is a filling material.

Reference numerals 11 and 12 denote upper through-holes provided on one side portion and the other side portions 7 and 8 of the shade concrete block. The upper screw rod 13 is inserted into the upper through-holes 11 and 12, and Nuts 14 are screwed on both ends of the screw rod 13. Also
Reference numerals 15 and 16 denote lower through holes, and nuts 18 are screwed on when the lower screw rod 17 is inserted.

The upper through holes 11, 12, the upper screw rod 13, the nut 14, the lower through holes 15, 16, the lower screw rod 17, and the nut 18 form a fixing means 19.

In the drawing, 20 is a washer made of rubber or the like, 21 is a tie rod whose one end is connected to the steel sheet pile wall 3 via an agitator 22, 23 is the bottom plate portions 7D and 8D on the one side and the other side, and the filling material 10 It is an embedding material that fills the gap X between the bottom plate portions 7D and 8D and the steel sheet pile wall 3, such as aggregates such as gravel, foaming materials, crushed stones, crushed stones, concrete pieces, etc.

Next, the operation of the above configuration will be described.

The steel sheet pile 1 is continuously cast in advance so that the upper portion 4 and the water surface 5 are substantially level with each other to form the steel sheet pile wall 3. Next, the one side portion and the other side portions 7 and 8 of the shade concrete block are hung by a crane (not shown) and disposed on both sides of the steel sheet pile wall 3, and the upper screw rod 13 is attached to the upper through holes 11 and 12. And tighten the nut 14 to tighten the lower screw rod 17 into the lower through hole 15,
16 and a nut through the through hole 1C formed in the steel sheet pile wall 3
Tighten 18 to fix the one side portion 7 and the other side portion 8 of the shade concrete block to the steel sheet pile wall 3. Next, the embedding material 23 is put into the one-side and other-side cavities 7A and 8A to close the gap X and the filling material 10 such as filling concrete and mortar is placed to complete the post-curing work.

As described above, the one side portion and the other side portions 7 and 8 of the shade concrete block are pre-cast and set on the steel sheet pile wall 3, and then the upper and lower screw rods 13 and 17,
Since the cap concrete block 6 can be provided by fixing both with the nuts 14 and 18, the work can be completed in a short time by cleaning up the bar arrangement and concrete placement at the site, and shortening the construction period. Can be planned. In addition, the work cost of the construction can be reduced and the construction will not be affected by the weather because there is no need for the on-site reinforcement work and the installation and removal of the concrete formwork having a complicated shape.

Furthermore, instead of placing the shade concrete block 6 on the steel sheet pile wall 3 as in the conventional example, the shade concrete block one side portion 7 and the shade concrete block other side portion 8 are interposed with the steel sheet pile wall 3 interposed therebetween. By arranging them facing each other along the steel sheet pile wall 3, wide hollow portions 7A, 8A surrounded by the inner peripheral surfaces of the one side portion 7 of the shade concrete block and the other side portion 8 of the shade concrete block and the steel sheet pile wall 3. Since the filling material 10 such as filled concrete is placed in the cavities 7A and 8A, the filling material 10 causes the one side portion 7 of the concrete block and the other side portion 8 of the concrete block and the steel The sheet pile wall 3 can be tightly integrated.

In addition, bottom plate portions 7D and 8 which are substantially along the recesses 1A and 1B of the steel sheet pile wall 3 at the lower end portions of the respective shade concrete blocks 7 and 8.
By integrally forming D, the lower openings of the cavities 7A and 8A can be almost closed, so that the filler 10 can be prevented from falling downward when the filler 10 is placed, and the bottom plate portions 7D and 8A thereof can be prevented.
The workability is excellent only by closing the slight gap X between the steel sheet pile wall 3 and the steel sheet pile wall 3, and the bottom plate portions 7D and 8D are integrally formed on the respective shade concrete blocks 7 and 8 so that the bottom plate portion 7D,
Even if 8D is thinly formed, it is possible to obtain sufficient strength to withstand the load of the filler 10, so that the bottom plate portions 7D, 8
The space in which the cavities 7A and 8A are narrowed by D is reduced, and the cavities 7A and 8A are filled with a filling material such as concrete.
It can be secured as a filling space for 10 and the shape of each bottom plate portion 7D, 8D can be made into the recesses 1A, 1B of the steel sheet pile wall 3.
That is, by integrally forming in correspondence with the uneven surface of the steel sheet pile wall 3, the concave portion 1A, 1B of the steel sheet pile wall 3 and the bottom plate portions 7D, 8D are aligned so that the shade concrete block one side portion 7 and the shade concrete. By assembling the block other side portion 8 to the steel sheet pile wall 3, it is easy to align the shade concrete block one side portion 7 and the shade concrete block other side portion 8 with the steel sheet pile wall 3, and the workability is also excellent.

Further, since the one side portion 7 of the shade concrete block and the other side portion 8 of the shade concrete block are made of precast, they can be constructed even in the underwater portion, so that the upper portion 4 of the steel sheet pile wall 3 can be set at substantially the same height as the water surface 5. Therefore, the length of the steel sheet pile wall 3 can be shortened, the cost can be reduced, and the quality of the shade concrete block 6 can be improved. When repairing, upper and lower screw bars 13, 17
By loosening the nuts 14 and 18 of the above, the cap concrete block 6 can be easily replaced.

Moreover, the shade concrete block one side and the other side 7,
8 has cavities 7A and 8A on one side and the other side, and by filling a filling material 10 such as filling concrete into the cavities 7A and 8A, the filling material 10 such as concrete or mortar on site can be obtained. The amount can be reduced and the upper surface of the shade concrete block 6 can be finished beautifully.

Further, by making the bottom plate portions 7D, 8D slightly smaller than the recesses 1A, 1B, various steel sheet piles 1 can be accommodated,
In addition, one side and the other side 7, 8 of the shade concrete block
Can be installed side by side beautifully.

FIG. 4 shows the second embodiment. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

In the second embodiment, the one side and the other side cavities 7A, 8
The upper part of A is opened to the same width, and a sealing material 24 is adhered to the gap X to close the gap X between the one side and other side bottom plate portions 7D, 8D and the steel sheet pile wall 3, The filler 22 is provided in the hollow portions 7A and 8A.

In this way, by closing the gap X with the sealing material 24, it is possible to reliably prevent the filling material 10 from falling.

The present invention is not limited to the above embodiment, and various modifications can be made, for example, the fixing means may be another fixing device.

[Advantage of the Invention] The present invention forms a steel sheet pile wall in which a large number of steel sheet piles are continuously driven by engaging claw portions formed at both ends with each other, and these steel sheet piles are continuously formed in an uneven shape. In a cap concrete block for a steel sheet pile wall that attaches a cap concrete block to the upper part of the sheet pile wall, one side portion of the cap concrete block made of precast and the other side portion of the cap concrete block are arranged to face each other with the steel sheet wall interposed. , A bottom plate which is provided with a fixing means for assembling and fixing one side of the shade concrete block, the other side of the shade concrete block and the steel sheet pile wall, and which is substantially along the recess of the steel sheet pile wall at the lower end of each shade concrete block. By projecting the part integrally, and filling the bottom plate part, the inner peripheral surface of the cap concrete block and the cavity surrounded by the steel sheet pile wall with a filler, It is possible to provide a shade concrete block for a steel sheet pile wall that can tightly integrate the cleat block and the steel sheet pile wall and can simplify the construction work on site.

[Brief description of drawings]

1 to 3 show a first embodiment, FIG. 1 is a partially cutaway perspective view, FIG. 2 is a longitudinal sectional view, FIG. 3 is a horizontal sectional view, and FIG. It is a longitudinal section showing an example. 1 …… Steel sheet pile 1A, 1B …… Concave 2 …… Claw part 3 …… Steel sheet pile wall 4 …… Upper part 6 …… Masa concrete block 7 …… Masa concrete block one side 7A, 8A …… Cavity part 7D , 8D ...... Bottom plate 8 ...... Kasa concrete block other side 10 ...... Filler 19 ...... Fixing means

Claims (1)

[Claims] 1. A plurality of steel sheet piles are continuously driven by engaging claw portions formed at both end portions with each other to form a steel sheet pile wall in which these steel sheet piles are continuous in a concavo-convex shape. In a cap concrete block for a steel sheet pile wall to which a cap concrete block is attached at an upper portion, one side portion of the cap concrete block made of precast and the other side portion of the cap concrete block are arranged so as to face each other with the steel sheet wall interposed therebetween, and these caps are arranged. A fixing means for assembling and fixing the one side of the concrete block, the other side of the shade concrete block and the steel sheet pile wall is provided, and the bottom plate portion which substantially follows the recess of the steel sheet pile wall is integrally provided at the lower end portion of each shade concrete block. Protruding from the
A shade concrete block for a steel sheet pile wall, characterized in that the bottom plate portion, the inner peripheral surface of the shade concrete block, and a cavity surrounded by the steel sheet pile wall are filled with a filler.