JPH0641685B2 - Construction method of cap concrete for steel sheet pile wall and cap concrete block - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method of constructing a cap concrete of a steel sheet pile wall formed of a steel sheet pile and a cap concrete block used in the method.

[Prior Art] Conventionally, a steel sheet pile wall is used in which steel sheet piles are continuously cast by engaging claw portions with each other as a revetment of a river or the like, and corrosion prevention is performed on the upper portion of the steel sheet pile wall, or Shade concrete is provided for beautifying the structure.
This shade concrete was arranged by arranging a reinforcing bar on the upper part of the steel sheet pile wall, mounting a mold on the outer periphery of the wall, then placing concrete in the mold and removing the mold after hardening. .

In the above-mentioned prior art, assembling the bar arrangement or the formwork,
Since construction of concrete must be done on site, the construction period will be long, temporary brackets will need to be installed on the river side as supporting materials for the formwork, and scaffolding as a workbench on the river side will be required. Since it is necessary, there was a problem that temporary construction cost and time would be required. Furthermore, when the water level of a river rises, on-site construction becomes impossible, and in winter construction, workability is poor, and there are problems in concrete quality and curing.

In order to solve the problem of using such a mold, Japanese Patent Laid-Open No. 52-154227 discloses a concrete in which two precast plates having spacers projecting from the inner surface are integrated with each other through fastening bolts. A block is provided along the steel sheet pile wall, the lower end of the plastic cast plate and the steel sheet pile wall are sealed with an elastic sealing material, and after placing the filled concrete in the concrete block, a holder for attaching the crown block is attached. A wall construction method has been proposed.

[Problems to be Solved by the Invention] In the conventional retaining wall construction method, after integrating two precast plates, the integrated concrete block is hung up, and the lower part of the block is attached to the upper end of the steel sheet pile wall. Since it is necessary to hang them from right above with matching gaps and to align the blocks adjacent to each other in the steel sheet pile wall direction, the work of hanging the blocks and the positioning of the blocks next to each other becomes complicated. There is a problem, and further, in the case concrete block, since the spacer provided inside contacts the upper end of the steel sheet pile wall to determine the height position, there is a difference in height at the upper end of the steel sheet pile wall for each sheet pile. It is expected that the heights of the consecutive blocks will be uneven and the height adjustment will be difficult.

In addition, the precast version used for the construction method of the retaining wall is
Since the inner surface is formed flat, it is necessary to close the space between the lower part of the precast plate and the steel sheet pile wall with an elastic sealing material before pouring the concrete, especially the uneven steel sheet pile wall. Since the elastic sealing material is installed between the precast plate and the precast plate, there is a problem that the workability at the site is poor.

Further, in the above-mentioned cap concrete lock, since a gap for placing concrete is provided between the two precast plates, a plurality of spacers must be formed on the inner surface of the precast plates, and the integrated block is made of steel. When installing on the sheet pile wall, since the lower gap size of the block is larger than the size of the steel sheet pile wall, there is a problem in that the block is likely to be displaced in the front and rear direction, which makes the installation work complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of constructing a shade concrete for a steel sheet pile wall and a shade concrete block that can solve the above-mentioned problems, save labor on site, and shorten the construction period.

[Means for Solving the Problem] In the construction method of the present invention, a steel sheet pile wall in which steel sheet piles are continuously driven by engaging the claw portions with each other and the heights of the upper ends thereof are substantially the same is arranged. After installing a hollow precast shaded concrete block that is divided into two parts, one side and the other end with a U-shape integrally provided with the top end on the upper end, also as a formwork,
This is a method of constructing a steel sheet pile wall for placing a capsular concrete by placing a solid concrete in the shade concrete block, laying the other side of the steel sheet pile wall,
After laying the shade concrete block other side on the other side laid flat, while abutting the lower end side of the shade concrete block one side to one side of the steel sheet pile wall, the shade concrete block other side By connecting the lower surface of the top end to the upper surface, one side of the cap concrete block is laid.

Further, the shade concrete block of the present invention engages the claw portions formed at both ends to continuously drive steel sheet piles to form a steel sheet pile wall having continuous irregularities by these steel sheet piles, and the upper end of the steel sheet pile wall. Install a two-part hollow precast capsular concrete block, and place the concrete in the capsular concrete to place the capsular concrete. In the capsular concrete block of the steel sheet pile wall, one side below the top end. One side wall is provided vertically, and an uneven bottom wall is formed below the one side wall so as to correspond to the steel sheet pile wall toward the other side, and the edge part is formed at the edge of the uneven bottom wall. One side of a cap concrete block equipped with a sealing material for sealing between a steel sheet pile wall, a concrete pouring opening formed at the top end, and a cap block connected to the lower side of the other end of the top end. concrete It is obtained by and a side.

Furthermore, the shade concrete block of the present invention engages the claw portions formed at both ends to continuously drive a steel sheet pile, and a steel sheet pile wall having continuous irregularities is formed by these steel sheet piles, and the upper end of the steel sheet pile wall is formed. Install a two-part hollow precast capsular concrete block, and place the concrete in the capsular concrete to place the capsular concrete. In the capsular concrete block of the steel sheet pile wall, one side below the top end. One side wall is hung down and one side part of a cap concrete block in which an uneven bottom wall corresponding to the steel sheet pile wall is formed below the one side wall and the other side, and concrete formed at the top end. A capping block concrete other side part connected to the lower side of the top end on the other side is provided, a metal connecting member is provided on the other side of the top end, and the cap concrete is provided. On the other side of the toe block, a metal connecting receiving member for connecting to the connecting member is provided, and the connecting member and the connecting receiving member are connected to each other to form the shade concrete block one side and the other side. Is to combine.

[Operation] A cap concrete block divided into two parts, one side portion and the other side portion having a U-shape integrally provided with a top end, is manufactured in advance in a factory or the like.
The other side of the steel sheet pile wall is laid, and the other side of the laying is laid so that the height position of the other side of the cap concrete block is aligned.
When laying one side of the shade concrete block, the lower end side is abutted against one side surface of the steel sheet pile wall and is lifted and held along the steel sheet pile wall. By connecting the lower surface of the end and the upper surface of the other side portion of the shade concrete block, one side portion of the shade concrete block can be stably laid on the basis of the other side portion, and the other side portion of the shade concrete block can be installed. Since one side portion of the shade concrete block is laid on the basis of, the top end of the one side portion can be laid away from the upper end of the steel sheet pile wall.

In addition, the bottom wall is aligned with the unevenness of the steel sheet pile wall, and one side of the shade concrete block and the other side of the shade concrete block are integrally set on the steel sheet pile wall, so that between the uneven bottom wall and the steel sheet pile wall. Is sealed by a sealing material, and concrete is poured from the concrete pouring opening to integrate the cap concrete block and the steel sheet pile wall.

Furthermore, by aligning the bottom wall with the unevenness of the steel sheet pile wall, one side of the cap concrete block can be correctly positioned along the steel sheet pile wall without shifting to one side or the other side, and in this state with the connecting member. By connecting the receiving member for connection, the one side portion and the other side portion of the shade concrete block are connected and integrated, and the shade concrete block divided into two can be easily installed on the steel sheet pile wall. .

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

As shown in FIGS. 1 and 2, the steel sheet pile wall 1 is, for example, U
The shaped steel sheet piles 2 are connected and driven by engaging the claw portions 3 with each other, and the heights of the upper ends of the respective steel sheet piles 2 are aligned so as to be substantially the same at the time of driving. On the side of the river A, which is one side of the steel sheet pile wall 1, a bulge 4 is laterally provided, and one end of a tie rod 5 is connected to the bulge 4. The U-shaped cap concrete block one side portion 6 provided so as to cover the upper portion of the steel sheet pile wall 1 and the river A side is made of precast made of reinforced concrete, and is a top end provided on the upper portion of the steel sheet pile wall 1. 7, one side wall 8 is hung downward on the side of the river A, which is one side of 7, and a bottom wall 9 projecting toward the side of the steel sheet pile wall 1 is provided below the one side wall 8, that is, the bottom wall 8 is It is formed toward the land B side which is the other side. In addition, the top end 7
An opening 10 for concrete pouring is formed in the approximate center of
Further, notches 11 are formed on both sides of the top end 7 in the lateral direction, and connecting rebars 12 project from the end walls of the notches 11, and the other side of the top end 7, that is, the land B side. A recess 13 is formed in the lower portion of the end wall, and a connecting rebar 14 that is a metallic connecting member is provided in an L-shape. The side wall 8
The bottom wall 9 provided at the lower part of the bottom is the recess 1A of the steel sheet pile wall 1.
A convex portion 9A and a concave portion 9B are formed corresponding to the convex portion 1B. A sealing material 1C such as a sponge is attached to the edges of the protrusions 9A and the recesses 9B.
The other side 15 of the cap concrete block provided on the other side of the steel sheet pile wall 1, that is, on the land B side is a substantially flat plate, and a recess 16 is formed in the upper part so as to face the recess 13 and The recessed portion 16 has a reinforcing bar for connection, which is a metal receiving member for connection.
17 is provided in a protruding manner, and notches 18 through which the tie rods 5 pass are formed in lower portions on both sides of the other side portion 15 of the shade concrete block. Further, 19 is a cavity formed between the one side portion of the shade concrete block and the other side portions 6 and 15, and 20 and 21 are arranged in the shade concrete block one side portion 6 and the shade concrete block other side portion 15, respectively. It is a reinforced bar.

The one side portion 6 of the shade concrete block is applied with oil on the inner surface of the steel outer mold 22 which is expanded as shown in FIG.
Spacer 20 on rebar 20 that has been meshed and bent
After attaching A and assembling the outer mold 22 with the inner mold 23, placing these molds 22 and 23 on a vibrator (not shown), inserting fresh concrete, steam curing and then removing the mold. To be done. Also, the shade concrete block, the other side 15
Similarly, the rebar 21 having the spacer 21A attached thereto is incorporated into the frame 24 that has been similarly developed, and then ready-mixed concrete is inserted to manufacture.

Next, the construction process will be described.

As shown in the first step of FIG. 3, crushed foundation stone, river sand 25, etc. are spread on the other side of the steel sheet pile wall 1 on the land B side in advance, and after compacting, the other side portion 15 of the shade concrete block is placed. It is hung by a crane and laid on the land B side of the steel sheet pile wall 1. At this time, the tie rods 5 are provided so as to pass through the notches 18.

Next, as shown in the second step of FIG. 1, FIG. 2 and FIG. 4, one side part 6 of the shade concrete block is lifted by a crane or the like and laid on the river A side of the steel sheet pile wall 1, and the height is adjusted. To do. In this case, as is clear from FIGS. 1, 2, and 4, the edge portion of the bottom wall 9, which is the lower end side of the one side portion 6 of the shade concrete block, is brought into contact with one side surface of the steel sheet pile wall 1.

Next, as shown in the third step of FIG. 5, connecting rebars adjacent to each other
12 Mutual and connecting rebars 14, 17 intervening rebar (not shown)
Other parts such as the cap concrete block
After the upper surface of 15 and the lower surface of the top end 7 of the one side portion 6 of the shade concrete block are integrally joined to lay the one side portion 6, as shown in the fourth step of FIGS. 5 and 6. Recesses 13,16,
The notches 18 are each filled with a joint material 26 such as mortar to close the gap, and an adhesive tape 27 is adhered to the gap between the one side portion 6 and the other side portion 15 of the shade concrete block to close the gap between them. . In this way, after the installation is completed, as shown in the fifth step of FIG. 7, the concrete placing device 28 is arranged on the top end 7, and the concrete filling 29 is poured through the opening 10 and the notch 11 which is the opening. After setting up, it is to be cured. still,
If necessary, flat concrete (not shown) may be simultaneously placed on the land B side of the shade concrete.

As described above, in the above-described embodiment, the precast cap concrete block one side portion 6 is provided on the upper end of the steel sheet pile wall 1.
And after installing the other side part 15 also as a formwork, the filled concrete 29 is poured into the cavity part 19 in these shade concrete block one side part 6 and the other side part 15, and on the upper part of the steel sheet pile wall 1. Since the shade concrete can be provided integrally,
On-site work such as formwork assembly and bar arrangement can be omitted, and since there is no need to build temporary scaffolding on site, site work can be reduced. Furthermore, one side 6 of the shade concrete block
And since the other side part 15 is a precast product, it is possible to perform machine work during assembly and installation work, which can significantly shorten the construction period, and the construction may be interrupted due to rising water level, and the quality of concrete in winter It is also possible to eliminate the risk of deterioration etc., and since the shade concrete block is divided into two parts, one side part 6 and the other side part 15, they can be individually transported and installed, improving workability. be able to.

Further, in laying the one side portion 6 of the shade concrete block, the edge portion of the bottom wall 9 which is the lower end side thereof is brought into contact with one side surface of the steel sheet pile wall 1 and lifted up along the steel sheet pile wall 1. By holding and connecting the lower surface of the top end 7 of the one side portion 6 of the shade concrete block and the upper surface of the other side portion 15 of the shade concrete block, the one side portion 6 of the shade concrete block can be stably laid. And, like this, steel sheet pile wall 1
Since the lower end side is brought into contact with one side face and the lower surface of the top end 7 of the one side portion 6 of the shade concrete block is connected to the upper surface of the other side portion 15, the height of the shade concrete block is adjusted according to the height of the other side portion 15. The top end 7 of the side portion 6 can be laid apart from the upper end of the steel sheet pile wall 1 so that even if there is a difference in height at the upper end of the steel sheet pile wall 1, the caps laid on the other side of the laid sheet. According to the other side portion 15 of the concrete block, it is possible to install the shade concrete blocks adjacent to each other so that their heights are the same.

Further, at one side 6 of the shade concrete block, one side wall 8 is vertically provided below one side of the top end 7, and a bottom wall 9 is formed in a lower portion of the one side wall 8 in a concavo-convex shape toward the other side, and By mounting the sealing material 1C on the edge of the bottom wall 9, the convex portion 9A faces the concave portion 1A of the steel sheet pile wall 1, the concave portion 9B faces the convex portion 1B, and the bottom wall 9 By sealing the space between the edge portion and the steel sheet pile wall 1 with the sealing material 1C, it is possible to prevent the filled concrete 29 from dropping downward when the filled concrete 29 is cast.

Further, by providing the concrete pouring opening 10 on the top end 7, it is possible to easily pour the filled concrete 29 into the cavity 19.

In addition, an uneven bottom wall 9 is formed on one side 6 of the shade concrete corresponding to the steel sheet pile wall 1, and a connecting rebar 14 which is a metal connecting member is provided on the other side of the top end 7, On the upper portion of the other side portion 15 of the shade concrete block, a connecting rebar 17 is provided which is a metal connecting receiving member to be connected to the connecting rebar 14.
Since these connecting reinforcing bars 14 and 17 are connected to connect the one side portion 6 and the other side portion 15 of the shade concrete block,
It is necessary to form a plurality of spacers on the inner surface of the block as in the conventional case and to use fastening bolts for integrating the blocks. By matching the bottom wall 9 with the unevenness of the steel sheet pile wall 1, one side of the shade concrete block 6 is correctly positioned along the steel sheet pile wall 1 without being displaced to the river A side or the land D side, and in this state, by connecting the connecting rebars 14 and 17 on the land B side where the construction conditions are good, the cap concrete By connecting the block one side portion 6 and the other side portion 15, the shade concrete block can be easily installed on the steel sheet pile wall 1.

The present invention is not limited to the above-mentioned embodiment, and various modifications can be made, for example, by appropriately changing the concave and convex portions of the bottom wall according to the irregularities of the steel sheet pile wall.

[Advantage of the Invention] The construction method of the present invention is such that each steel sheet pile is continuously driven by engaging the claw portions with each other, and the heights of the upper ends are substantially equal to each other. After installing a hollow precast shaded concrete block that was divided into one side and the other end with a U-shape with a fixed end also as a formwork,
This is a method of constructing a steel sheet pile wall for placing a capsular concrete by placing a solid concrete in the shade concrete block, laying the other side of the steel sheet pile wall,
After laying the shade concrete block other side on the other side laid flat, while abutting the lower end side of the shade concrete block one side to one side of the steel sheet pile wall, the shade concrete block other side The top surface is joined to the bottom surface to lay one side of the shade concrete block. It is easy to adjust the height of the shade concrete block, which saves labor on site and shortens the construction period. In addition, since the shade concrete block is divided into two parts, it can be easily transported and installed.

Further, the shade concrete block of the present invention engages the claw portions formed at both ends to continuously drive steel sheet piles to form a steel sheet pile wall having continuous irregularities by these steel sheet piles, and the upper end of the steel sheet pile wall. A hollow concrete block made of hollow precast, which is divided into two, is installed, and the concrete is poured into this concrete to make the concrete. One side wall is hung downward, and a bottom wall having an uneven shape is formed below the one side wall so as to correspond to the steel sheet pile wall toward the other side, and the edge is formed at an edge of the bottom wall having the uneven shape. Part of the cap concrete block fitted with a sealing material for sealing between the wall and the steel sheet pile wall, a concrete pouring opening formed at the top end, and a lower part of the other end of the top end. Shade block concrete Since it is equipped with a side wall and a bottom wall sealing material that is formed in an uneven shape corresponding to the steel sheet pile wall, it is possible to easily fill the inside of the cavity without dropping the filled concrete. Filled concrete can be placed.

Furthermore, the shade concrete block of the present invention engages the claw portions formed at both ends to continuously drive a steel sheet pile, and a steel sheet pile wall having continuous irregularities is formed by these steel sheet piles, and the upper end of the steel sheet pile wall is formed. Install a two-part hollow precast capsular concrete block, and place the concrete in the capsular concrete to place the capsular concrete. In the capsular concrete block of the steel sheet pile wall, one side below the top end. One side wall is hung down and one side part of a cap concrete block in which an uneven bottom wall corresponding to the steel sheet pile wall is formed below the one side wall and the other side, and concrete formed at the top end. A capping block concrete other side part connected to the lower side of the top end on the other side is provided, a metal connecting member is provided on the other side of the top end, and the cap concrete is provided. On the other side of the toe block, a metal connecting receiving member for connecting to the connecting member is provided, and the connecting member and the connecting receiving member are connected to each other to form the shade concrete block one side and the other side. Is to combine
Positioning work on the steel sheet pile wall is easy, and the work for connecting one side of the shade concrete block can be done easily.
Installation workability can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing the second step, FIG. 2 is a longitudinal sectional view of the same, FIG. 3 is a schematic explanatory view showing the first step, and FIG. 4 is a schematic explanatory view showing the second step. 5 is a partially cutaway plan view showing the third step, FIG. 6 is a partially cutaway perspective view showing the fourth step, and FIG. 7 is a partially cutaway perspective view showing the fifth step. FIG. 8 is an exploded perspective view of the mold on one side of the shade concrete block, and FIG. 9 is a perspective view of the mold on the other side of the shade concrete block. DESCRIPTION OF SYMBOLS 1 ... Steel sheet pile wall 1C ... Sealing material 2 ... Steel sheet pile 3 ... Claw part 6 ... Shade concrete block One side part 7 ... Top end 8 ... One side wall 9 ... Bottom wall (lower end side) 10 ... Concrete pouring opening 14 … Reinforcing bar (metal connecting member) 15… Shade concrete block other side 17… Reinforcing bar (metal connecting receiving member) 19… Cavity 29… Filled concrete A… River B… Land

Claims (3)

[Claims] 1. A steel sheet pile wall, which is formed by continuously striking each steel sheet pile with its claws engaged with each other, and whose upper ends are substantially the same in height, is integrally provided with a top end. After installing a hollow precast shaded concrete block that is divided into two parts, one side and the other end of the V-shape, also as a formwork, the filled concrete is placed in this shaded concrete block to cast shade concrete. A method of constructing a cap concrete for a steel sheet pile wall to be provided, wherein the other side of the steel sheet pile wall is laid, and the other side of the laid concrete block is laid on the laid other side, and then the reinforced concrete block is The lower end side of the side portion is abutted against one side surface of the steel sheet pile wall, and the cap concrete block one side portion is laid by connecting the top end lower surface to the upper surface of the other side portion of the cap concrete block. Of steel sheet pile wall Construction method of concrete block. 2. A steel sheet pile is continuously driven by engaging claw portions formed at both ends, and a steel sheet pile wall having continuous irregularities is formed by these steel sheet piles, and the steel sheet pile wall is divided into two at the upper end thereof. Install a hollow precast shaded concrete block, and place the filled concrete in this shaded concrete to form shade concrete.In the shaded concrete block of the steel sheet pile wall, one side wall is hung below one side of the top end. An uneven bottom wall corresponding to the steel sheet pile wall is formed below this one side wall and is formed toward the other side, and the edge portion and the steel sheet pile wall are formed at the edge of the uneven bottom wall. One side of a cap concrete block fitted with a sealing material for sealing between the two, a concrete pouring opening formed at the top end, and another side of the cap block concrete connected to the lower side of the other end of the top end. Specially equipped with Shade concrete block of steel sheet pile wall to be. 3. A steel sheet pile is continuously driven by engaging claw portions formed at both ends, and a steel sheet pile wall having continuous irregularities is formed by these steel sheet piles, and the steel sheet pile wall is divided into two at the upper end thereof. Install a hollow precast shaded concrete block, and place the filled concrete in this shaded concrete to form shade concrete.In the shaded concrete block of the steel sheet pile wall, one side wall is hung below one side of the top end. One side part of the cap concrete block having a bottom wall with an uneven shape corresponding to the steel sheet pile wall facing the other side below the one side wall, and a concrete pouring opening formed at the top end. And a cap block concrete other side part coupled to the lower part of the other side of the top end, and a metal connecting member is provided on the other side of the top end, and at the upper part of the other side part of the cap concrete block. , A metal connecting receiving member for connecting with the connecting member is provided, and the connecting member and the connecting receiving member are connected to connect the one side portion and the other side portion of the shade concrete block. Cap concrete block with steel sheet pile wall.