JPH0625408B2 - Cap concrete block for steel sheet pile wall - Google Patents

Description

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

(Prior Art) Conventionally, a steel sheet pile wall in which steel sheet piles are continuously cast is used as a quay wall of a sea, a river or the like or a retaining wall on the ground. A cap concrete block is provided on the upper part of the steel sheet pile wall to improve the appearance. This shade concrete block was formed by arranging reinforcing bars on the upper part of a steel sheet pile wall, setting a concrete frame on the outer circumference of the reinforcing bars, and then placing concrete.

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 composed of two flat plate-shaped precast plates integrally provided with spacers on the inner surface.
This is pre-molded, each precast plate is assembled at the construction site with fastening bolts, then concrete is placed between each precast plate to integrate each precast plate and the steel sheet pile wall, A method of constructing a retaining wall has been proposed, which can omit mounting of the formwork and removal after construction.

[Problems to be Solved by the Invention] In the above-described conventional method for constructing a retaining wall, the spacers of the precast plates are abutted against each other and the gaps between the precast plates are set to be wider than the width of the steel sheet pile wall by using fastening bolts. Then, the integrated concrete block is lifted up and inserted so that the upper end of the steel sheet pile wall fits into the lower gap of the precast plate, and concrete is placed in the gap between the precast plates to make the steel sheet pile. Since the wall and the concrete block are integrated, the lower part of the cap concrete block is structurally opened, and it is necessary to close the lower opening of the cap concrete block with a sealing material before placing concrete between the precast plates. At the same time, partially repair the shade concrete block by, for example, aging the shade concrete block. If desired, the concrete filled between the precast plates is integrated with the steel sheet pile wall and the precast plates cannot be replaced as needed.

Also, since the spacers protruding from the inner surface of each precast plate are set to make the gap between the precast plates wider than the width of the steel sheet pile wall, the positions before and after the precast plate with respect to the steel sheet pile wall are not fixed, At the time of construction, it is also necessary to assemble the individual shade concrete blocks while adjusting the positions so that the consecutive shade concrete blocks are aligned, and due to such troublesome positioning work of the shade concrete blocks, there is a problem of poor workability. It is left.

The present invention solves the above-mentioned problems, wipes out work such as reinforced concrete at the site, and provides a shade concrete block for steel sheet pile wall with excellent maintainability by allowing the shade concrete block to be detached as required. The purpose is to do.

(Means for Solving the Problem) The present invention is to continuously strike a large number of steel sheet piles by mutually engaging the claw portions formed on both end portions, and a steel sheet pile wall in which 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 Arranged to face each other, each of these shade concrete blocks, a top plate portion that can be placed on the upper end portion of the steel sheet pile wall and a downwardly downwardly integrated downwardly from the top sheet portion, almost the uneven surface of the steel sheet pile wall. A side plate portion having a concave portion and a convex portion along which it is formed is formed, and fixing means for assembling and fixing each cap concrete block and a steel sheet pile wall are provided.

(Operation) Place one side of the shade concrete block and the other side of the shade concrete block on both sides of the steel sheet pile wall, and place the top plate portion of each of these shade concrete blocks on the upper part of the steel sheet pile wall. Assemble the projections and recesses so that they match the uneven surface of the steel sheet pile wall. When each cap concrete block is assembled to the steel sheet pile wall in this manner, the steel sheet pile wall and each cap concrete block come into close contact with each other, and in this state, each cap concrete block and the steel sheet pile wall are integrated by the fixing means.

(Embodiment) FIGS. 1 to 3 show a first embodiment, in which 1 is a steel sheet pile, and steel having a concavo-convex surface 3 which is continuously cast by engaging mutual claw portions 2 with each other. A sheet pile wall 4 is formed. The upper portion 5 of the steel sheet pile wall 4 is set at substantially the same height as the water surface 6. Reference numeral 7 denotes a shade concrete block provided on the upper portion 5 of the steel sheet pile wall 4, and the shade concrete block 7 includes one side portion 8 of the shade concrete block provided on one side of the steel sheet pile wall 4 and the other side portion 9 of the shade concrete block. , Which are each formed by precasting in a factory or the like. One side 8 of the shade concrete block is a steel sheet pile wall 4
It is composed of a side plate portion 8A attached to one side and a top plate portion 8B provided above the side plate portion 8A. And the side plate portion 8A
A convex portion 8C and a convex portion 8D are continuously formed on the surface corresponding to the uneven surface 3. The other side portion 9 of the shade concrete block is, like the one side portion 8 of the shade concrete block, a side plate portion 9A having a protrusion 9C and a protrusion 9D attached to the other side of the steel sheet pile wall 4, and an upper portion of this side plate portion 9A. And a top plate portion 9B that is horizontally installed.

Reference numerals 10 and 11 denote a top plate portion 8B of the one side portion 8 of the shade concrete block and a top plate portion 9 of the other side portion 9 of the shade concrete block.
It is an upper through hole that is horizontally provided in B.
An upper screw rod 12 is inserted into the upper screw rod 12, and nuts 14 are fastened to both ends of the upper screw rod 12 via washers 13 such as elastic members. Reference numerals 15 and 16 denote side plate portions 8 on one side portion 8 of the shade concrete block and the other side portion 9 of the shade concrete block.
It is a lower through hole that is provided laterally in A and 9A. A through hole 17 formed in the steel sheet pile wall 4 is formed, and nuts 20 are tightened via washers 19 at both ends of the lower through holes 15, 16 and the screw rod 18 inserted through the through hole 17. There is. The upper through holes 10 and 11, the screw rod 12, the nut 14 and the lower through holes 15 and 16, the screw rod 18 and the nut 20 form a fixing means 21. Reference numeral 22 is a tie rod whose one end is connected to the steel sheet pile wall 4, and 23 is a joint material such as mortar.

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 5 is at substantially the same level as the water surface 6 to form the steel sheet pile wall 4. Next, the cap concrete block one side portion 8 is hung by a crane (not shown) or the like to abut against one side of the steel sheet pile wall 4, and the cap concrete block other side portion 9 is also similarly attached to the other side of the steel sheet pile wall 4. Abut. At this time, the top plate portions 8B and 9B are placed on the upper portion 5 of the steel sheet pile wall 4, and the protrusions 8C and 9C and the recesses 8D and 9D are aligned with the uneven surface 3 of the steel sheet pile wall 4. Then, the screw rod 12 is inserted into the upper through holes 10 and 11 and tightened with the nut 14, and the screw rod 18 is inserted into the lower through holes 15 and 16 and the through hole 17 and the nut 20.
Then, the steel sheet pile wall 4, the shade concrete block one side portion 8 and the shade concrete block other side portion 9 are integrally fixed. After this, joints 23 such as mortar are filled in these gaps. The joint material 23 is provided as needed. Further, an elastic plate such as rubber may be interposed between the upper portion 5 and the top plates 8B and 9B.

As described above, the one side portion and the other side portions 8 and 9 of the shade concrete block are manufactured in advance by press casting, set on the steel sheet pile wall 4, and then fixed to each other by the screw rods 12 and 18. Since the shade concrete block 7 can be installed, work can be completed in a short time by eliminating the bar arrangement and concrete placement on the site, and the curing period on the site can be eliminated to shorten the construction period. You can Also, since the work of rebar construction on site and the installation and removal of concrete formwork with a complicated shape have been eliminated,
The construction cost can be reduced and the construction will not be affected by the weather.

Furthermore, one side and the other side of the shade concrete block 8,
Since 9 is made of precast, it can be installed even in an underwater portion, so that the upper portion 5 of the steel sheet pile wall 4 can be set at substantially the same height as the water surface 6. Therefore, the length of the steel sheet pile 1 can be shortened, the cost can be reduced, and the quality of the shade concrete block 7 can be improved. Further, at the time of repairing, the cap concrete block 7 can be easily replaced by loosening the screw rods 12 and 18, so that an excellent effect on maintainability can be exhibited.

Moreover, the shade concrete block 7 is divided into one side portion and the other side portions 8 and 9 of the shade concrete block, which is integrated with the steel sheet pile wall 4 by the fixing means 21,
The appearance of both sides of the steel sheet pile wall 4 can be improved, and the projections 8 corresponding to the uneven surface 3 of the steel sheet pile wall 4 on the side plate portions 8A, 9A of the one side portion and the other side portions 8, 9 of the shade concrete block.
By forming C and 9C and recesses 8D and 9D, one side portion 8 of the shade concrete block and the other side portion 9 of the shade concrete block are connected to the steel sheet pile wall so that the side plate portions 8A and 9A and the steel sheet pile wall 4 are aligned with each other. By assembling to the steel sheet pile wall 4, the one side portion 8 and the other side portion 9 of the shade concrete block can be easily aligned with the steel sheet pile wall 4, and the workability is also excellent.

The present invention is not limited to the first embodiment,
For example, as shown in FIG. 4 and FIG. 5, in order to prevent water leakage between adjacent shade concrete blocks, a connecting seat 24 for connecting the tie rods 22 is provided on one side portion 8 of the shade concrete blocks. Various modifications are possible such that both end surfaces of the shade concrete block are tapered surfaces, and water blocking packing is interposed between the tapered surfaces.

(Effects of the Invention) The present invention is a steel sheet pile wall in which a plurality of steel sheet piles are continuously struck by mutually engaging the claw portions formed at both end portions, and these steel sheet piles are formed in a concavo-convex shape. In a shade concrete block for a steel sheet pile wall that attaches a shade concrete block to an upper portion of a steel sheet pile wall, one side portion of the shade concrete block made of precast and the other side portion of the shade concrete block are arranged to face each other with the steel sheet pile wall interposed. However, each of these shade concrete blocks is a top plate portion that can be placed on the upper end portion of the steel sheet pile wall and a recess that is integrally hung downward from the top plate portion and that substantially follows the uneven surface of the steel sheet pile wall. By forming a side plate portion having a convex portion and a fixing means for assembling and fixing each shade concrete block and steel sheet pile wall, the work such as reinforced concrete on site is wiped out,
Further, it is possible to provide a shade concrete block for a steel sheet pile wall, which has an excellent maintainability by allowing the shade concrete block to be detached as required.

[Brief description of drawings]

1 to 3 show a first embodiment, FIG. 1 is an exploded perspective view, FIG. 2 is a vertical sectional view, and FIG. 3 is a plan sectional view.
FIG. 4 is a longitudinal sectional view of the second embodiment, and FIG. 5 is a plan view of the same. 1 ... Steel sheet pile 2 ... Claw portion 3 ... Uneven surface 4 ... Steel sheet pile wall 5 ... Upper part 7 ... Shade concrete block 8 ... Shade concrete block one side 9 ... Shade concrete block other side 8B , 9B ... Top plate 8A, 9A ... Side plate 8C, 9C ... Convex portion 8D, 9D ... Recess 21 ... 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 hat concrete block for a steel sheet pile wall that attaches a hat concrete block to the upper portion, one side portion of the hat concrete block composed of precast and the other side portion of the hat concrete block are arranged to face each other with the steel sheet pile wall interposed therebetween, and each of these The shade concrete block has a top plate portion that can be placed on the upper end portion of the steel sheet pile wall and a recess and a protrusion that are integrally hung downward from the top plate portion and that substantially follow the uneven surface of the steel sheet pile wall. A shade concrete block for a steel sheet pile wall, characterized in that it has a side plate portion and has fixing means for assembling and fixing each shade concrete block and a steel sheet pile wall.