JP3384986B2 - Precast concrete plate unit for outer wall, sabo dam and its construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete plate unit for an outer wall, a erosion control dam and a construction method thereof.

[0002]

2. Description of the Related Art As a conventional erosion control dam, a concrete gravity dam 24 as shown in FIG. 10 is mainly used. In this construction, major materials, various equipment, and temporary materials were transported to the construction site by a cableway in a forest without an ordinary motorway.

[0003]

However, in the construction of the above-mentioned erosion control dam, it is extremely difficult to transport main materials, various equipment and temporary materials, and the workability is poor, so that the construction cost is usually low. It was more expensive than the concrete structure. In addition, it takes time to put concrete in the construction because the cableway is used, and there is also a problem of freezing in winter, which makes quality control very difficult. Furthermore, since the excavated soil was processed around the Sabo dam, there was a problem of destroying the surrounding environment.

The present invention has been made in view of the above problems, and an object thereof is to construct an outer wall which can be constructed in a short period of time and economically and which does not destroy the surrounding environment. Precast concrete board unit,
It is to provide a sabo dam and its construction method.

[0005]

[Means for Solving the Problems] The gist of the precast concrete plate unit for outer wall, which is a means for solving the above problems, is that two precast concrete plates and two
At least one precast concrete beam
The two precast concrete plates facing each other.
The beam member connecting protrusion provided at the center of the facing surface,
Connect the precast concrete beams of the
Protrusions for joining at both ends of the facing surface of the reinforced concrete plate
Is provided, and the joint protrusion is adjacent to another joint protrusion.
Installation of beams similar to the projections for connecting beams by joining parts
With a configuration characterized in that it forms a protrusion for use in
is there. Further, the gist of the sabo dam is the outer wall precast of claim 1.
Connect the cast concrete plate unit with the joint projection.
Precast concrete plates facing each other upstream and downstream
Be positioned on the right and left sides, and in the left-right direction
The outer pre-cast coke for the outer wall
Precast concrete beam for concrete plate unit
Is a precast concrete board unit for the lower outer wall
Beam installation protrusion formed by joining the above-mentioned joining protrusions
Positioned on top and facing the opposite precast concrete board
The filling material is filled in the space that is formed to form a dam body.
It is a feature that is characterized. Construction of Sabo dam
The outline of the construction method is that the foundation is formed from the stream floor to the shore.
Precast concrete board for outer wall according to claim 1 on a foundation
Precast concrete board with units adjacent to each other
Are arranged so that they are located on the upstream side and the downstream side to form the first stage.
The concrete unit that was built and located on the upstream and downstream sides.
Fill the space between the plates with the filling material and place it on the top of the first stage.
Next to a similar precast concrete board unit for exterior walls
Stacked in contact with each other and shifted by 1/2 in the left-right direction
The second stage is built up by stacking, and the upper wall precast concrete
Precast concrete beam of cleat board unit,
Precast concrete board units for outer walls on the lower side
Beam installation protrusion formed by joining the above-mentioned joining protrusions
Located on the upper side, the concrete located on the upstream side and the downstream side
Fill the space between the unit plates with filling material, and so on.
The precast concrete board unit for the outer wall
A structure characterized by forming a bank with a predetermined height by stacking
Is.

The outer walls on the upstream and downstream sides of the Sabo dam are simplified.
Precast concrete plate uni for exterior wall that can be simply constructed
Can be provided. Also precast conc
Lateral connection of the reed plates can be easily and reliably performed, and the sand control
The outer wall on the upstream side and the downstream side of the dam can be easily constructed.
Also precast concrete beams and precast concrete
Can be easily joined to a reed board. See also precast
The cleat plate and the beam can be joined easily and firmly. Also
Tension material can be easily inserted in the beam connecting projection and the joining projection.
I can pass. In addition, the sabo dam is the precast concrete section.
It can be constructed from wood. The outer wall on the upstream and downstream sides
Precast concrete boards for use with each other are prestressed
It is given and joined. In addition, the Sabo dam is a precast
Constructed with cleat members, it has good workability and
Even in a poor working environment, in a short period of time and economically,
Moreover, it can be built without destroying the surrounding environment. Well
Precast concrete for upstream and downstream outer walls
The plates are prestressed and joined together.

[0007]

[0008]

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an outer wall precast concrete plate unit, a sabo dam and a construction method therefor according to the present invention will be described below in detail with reference to the drawings. First, the precast concrete board unit for outer walls will be explained, and then the sabo dam and its construction method will be explained.

FIG. 1 is a perspective view of an outer wall precast concrete plate, FIG. 2 (1) is a plan view of the outer wall precast concrete plate, (2) is a side view of the same, and FIG. 3 (1) is a precast concrete plate. A perspective view, (2) is a plan view of the same, and (3) is a sectional view taken along the line AA of (2).

As shown in FIG. 1, an outer wall precast concrete plate unit (hereinafter referred to as a PC plate unit) 1 includes two facing precast concrete plates (hereinafter referred to as a PC plate) 2 and one precast concrete beam (hereinafter referred to as a PC plate). (Referred to as a beam) 3 to form a plane H.

The PC beam 3 has a plate shape corresponding to the height of the PC plate 2, and bulges 4 are formed at the upper and lower edges of the PC beam 3, and a plurality of linear or linear shapes penetrating the bulges 4 are formed. The rod-shaped connecting member 5 is joined to the beam member connecting protrusion 6 on the rear surface of the PC board 2.

Further, vertically extending joining protrusions 7 are provided at both ends of the back surface of the PC board 2, and one of these joining protrusions 7 is provided with a fitting recess 7a on its side surface.
Fitting protrusions 7b are respectively provided on the side surfaces of the other joining protrusion 7. Further, the beam member connecting projecting portion 6 and the joining projecting portion 7 are provided with a hole 9 through which a tension material 8 such as a PC steel wire or a PC steel rod penetrates. Further, a joining projection 10 is provided on the upper surface of the PC board 2, and a joining recess 11 is provided on the lower surface thereof.

Although the number of the PC beams 3 is one in the above-mentioned embodiment, two or more PC beams 3 can be installed between the PC plates 2, and the number of the PC beams 3 corresponding to the size of the PC plates 2 can be installed. It shall be.

FIG. 4 is a front view of a sabo dam constructed by using the PC board unit 1 described above. (1) of FIG. 5 is a sectional view taken along line BB of FIG. 4 and (2) of FIG. Is a sectional view taken along the line CC of FIG. 1, (1) is an enlarged sectional view of an essential part, and FIG. 7 is (2) of FIG.
6 is a cross-sectional view taken along line DD of FIG.

The erosion control dam 12 is a foundation 13 extending from the bed in the valley to the shore, and the dam body 1 constructed on the foundation 13.
4 and. The bank body 14 is constructed by laying out the PC board units 1 in a lateral direction so that the PC boards 2 are located on the upstream side and the downstream side, and stacking them in a state of being shifted by 1/2 in the left-right direction, and facing each other. The space 15 formed by 2 is filled with the filling material 16 to be constructed.

In the lateral direction of each PC board 2, the fitting concave portion 7a and the fitting convex portion 7b of the joining projection 7 are fitted and joined, and the joining projection 10 on the upper surface of the PC board and the like are joined in the vertical direction. PC
Prestressing is provided by a tension member 8 such as a PC steel wire or a PC steel rod that fits into the joint recess 11 on the lower surface of the plate and penetrates through the hole 9 between the beam member connecting protrusion 6 and the connecting protrusion 7. Have been joined. In this way, the respective PC boards 2 are integrally joined in the left-right and up-down directions to form the outer wall 17 on the upstream side and the downstream side.
a, 17b are constructed, and the space portion 15 surrounded by these outer walls 17a, 17b is filled with a filling material 16, that is, soil concrete produced by mixing cement with locally generated soil.

In the PC board unit 1, the PC board 2 is 1/2
PCs are stacked one by one in the left-right direction.
The beams 3 are also installed at positions displaced from each other, that is, on the beam material installation projections 18 formed by joining the bonding projections 7 of the PC board 2, and fixed to the support plate 19 provided here by anchor bars 20. ing. Since the dam body 14 is constructed in such a state that the PC plate 2 and the PC beam 3 are displaced from each other, the sabo dam 12 has high strength and high safety.

Next, the construction method of the above-mentioned erosion control dam 12 will be explained. First, a PC board unit 1 as shown in FIG. 1 is manufactured in a factory, and the required number is carried into the site.
In this PC board unit 1, the PC board 2 and the PC beam 3 can be separated and carried separately to the site and assembled there. In particular, at a site where it is difficult to carry in necessary materials, this makes it easier to carry in and improves workability.

Next, a foundation 13 is constructed from the valley floor to the shore where the erosion control dam 12 is constructed, and on top of this, as shown in FIG. The first stage 2 by arranging so that they are located on the upstream side and the downstream side.
Build 2. When the fitting concave portion 7a and the fitting convex portion 7b of the joining protruding portion of the PC board 2 are fitted to each other, the first-stage concrete unit boards 21 located on the upstream side and the downstream side are formed. Then, the space portion 15 formed by these concrete unit plates 21 is filled with the soil concrete manufactured by mixing the site-generated soil and cement as the filling material 16. Further, when the joining protrusions 7 of the PC board 2 are joined together, a beam member installing protrusion 18 similar to the beam member connecting protrusion 6 is formed, and the support plate 19 is installed there.

Next, a similar PC is formed on the upper surface of the first stage 22.
When the plate units 1 are stacked adjacent to each other by ½ in the left-right direction, the PC beams 3 are installed on the beam member installation protrusions 6 and fixed by the anchor bars 20 of the support plate 19. At the same time, the beam member installation projection 18 formed by joining the joining projections 7 of the PC board 2 is installed on the upper surface of the PC beam 3 of the first stage 22.

The PC boards 2 form second-stage concrete unit boards 21 located on the upstream side and the downstream side, and the space portion 15 formed between them is used as the filling material 16 as described above. The second stage 23 is constructed by filling it with soil concrete. When the PC board units 1 are successively stacked, the tension member 8 is passed through the holes 9 provided in the beam member connecting protrusion 6 and the joining protrusion 7.

Then, when the PC board units 1 are stacked in the same manner and reach the final height, the tension members 8 are fixed to the uppermost concrete unit boards 21 by applying a predetermined tension force. As a result, the bank 14 is constructed by the prestressed outer walls 17a and 17b on the upstream and downstream sides, the PC beam 3, and the filling material 16.

[0038]

EFFECTS OF THE INVENTION It is possible to provide a PC board unit that can easily construct the outer walls on the upstream side and the downstream side of a sabo dam.

The PC board unit can be easily transported even in a poor working environment. In particular, since the PC board and the PC beam can be separated, they can be easily transported to the site.

It is possible to easily and reliably join the PC boards to each other in the lateral direction.

It is possible to easily join and separate the PC beam and the PC board.

The tension member can be easily inserted into the beam connecting projection and the joining projection.

A sabo dam can be constructed from precast concrete members.

The upstream and downstream outer walls can be constructed by prestressing.

It is possible to construct a sabo dam in a place where the working environment is poor, with good workability, in a short period of time, economically, and without destroying the surrounding environment.

[Brief description of drawings]

FIG. 1 is a perspective view of a PC board unit.

2A is a plan view of a PC board unit, and FIG. 2B is a side view thereof.

FIG. 3 is a perspective view of a PC board, FIG.
(3) is the same side view, (4) is the sectional view on the AA line of (2).

FIG. 4 is a front view of a sabo dam.

5A is a sectional view taken along line BB of FIG. 4, and FIG. 5B is a sectional view taken along line CC of FIG.

FIG. 6 is an enlarged cross-sectional view of a main part.

FIG. 7 is a sectional view taken along line DD of FIG. 5 (1).

FIG. 8 is a perspective view showing a state in which a first-stage PC board unit is installed.

FIG. 9 is a perspective view showing a state in which a second-stage PC board unit is installed.

FIG. 10 is a cross-sectional view of a conventional sabo dam.

[Explanation of symbols]

1 PC board unit 2 PC board 3 PC beams 4 bulge 5 connecting members 6 Projections for beam connection 7 Joining protrusion 8 tension materials 9 holes 10 Joint protrusion 11 Joint recess 12 Sabo Dam 13 basics 15 Space section 16 filling materials 17 outer wall 18 Projection for beam installation 19 Support plate 20 Anchor muscle 21 Concrete unit board 22 First stage 23 Second stage 24 concrete gravity dam

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-11-21860 (JP, A) JP-A-6-185036 (JP, A) JP-A-11-21859 (JP, A) JP-A-11- 117265 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02B 7/02 E02B 7/00

Claims (8)

(57) [Claims] 1. A precast concrete plate comprising two precast concrete plates and at least one precast concrete beam, said two precast concrete plates are opposed to each other, and said beam member connecting projection is provided at a central portion of said opposing faces.
Connect the precast concrete beams of the
Protrusions for joining at both ends of the facing surface of the reinforced concrete plate
Is provided, and the joint protrusion is adjacent to another joint protrusion.
Installation of beams similar to the projections for connecting beams by joining parts
A precast concrete plate unit for an outer wall, which is characterized in that it forms a projecting portion . 2. A precast concrete beam is a precast concrete beam.
When the plate shape corresponding to the height of the cast concrete plate is presented
The precast concrete board unit for outer wall according to claim 1 , wherein bulging portions are formed at upper and lower edges thereof . 3. Precast concrete board and precast
For connection with reinforced concrete beams, use multiple lines or bars.
The precast concrete plate unit for an outer wall according to claim 1, wherein a strip- shaped connecting member is used . 4. A beam member connecting projection and a joining projection,
Tension material for prestressing in the height direction is inserted
The precast concrete board unit for an outer wall according to claim 1, wherein the hole is provided . 5. The precast concrete for outer wall according to claim 1.
The board units are continuously joined at the joining protrusions to face each other.
Precast concrete boards are used on the upstream side and the downstream side.
So that it is positioned and shifted by 1/2 in the left-right direction
Stacked in the state, and then the upper outer wall precast concrete
The precast concrete beam of the board unit is
For joining precast concrete board units for exterior walls of
Located on the beam installation protrusion formed by joining the protrusions
Made of opposing precast concrete plates
A sabo dam characterized by a filling material being filled in the space to form a dam body . 6. The product is shifted by 1/2 in the left-right direction.
Precast concrete board unit for outer walls
Is pre-stressed with tension material arranged in the stacking direction
Check dams according to claim 5, characterized in that it is given. 7. A foundation is formed from a stream bed to a shore,
Outer wall precast concrete plate as claimed in claim 1 on a foundation
The unit is continuously joined with the joining protrusion and
Cast concrete plates should be located upstream and downstream
To form the first stage, and are located on the upstream side and the downstream side.
Filling the space between the concrete unit boards
Then, at the top of the first stage, a similar precast concrete for outer wall
Connect the cleat plate unit continuously with the protrusion for joining.
And stack them in a state that they are shifted by 1/2 in the left-right direction.
Precast concrete for the outer wall of the upper tier
Attach the precast concrete beam of the plate unit to the outer
For joining precast concrete plate units for walls
Located on the beam installation protrusion formed by joining the protrusions
The concrete units located on the upstream side and the downstream side.
Fill the space between the panels with the filling material and do the same in the following.
For stacking precast concrete board units for
A construction method for a sabo dam, which is characterized by forming a bank with a constant height . 8. A plaster for an outer wall stacked in a plurality of stages on a foundation
The cast concrete plate unit is a tension member with the foundation.
The construction method of a sabo dam according to claim 7, wherein prestress is applied by the method.