JP4081784B2 - Form for water bottom structure construction and water bottom embankment method using the form - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a form for forming a bottom structure for use in constructing a structure on the bottom of a water by adding a solidifying material such as cement to fluid dredged sand or a fluidized solidifying material such as concrete. The present invention relates to a submerged embankment method using a formwork.
[0002]
[Prior art]
Conventionally, when using a fluidized solidifying material such as concrete or a solidified material such as cement added to dredged soil and constructing a structure such as embankment or embankment on the bottom of the water, the solidified material is applied. Prior to installation, a steel mold is assembled on the bottom of the water, a solidified material is filled therein, and the mold is removed after the solidification.
[0003]
[Problems to be solved by the invention]
In such a construction method, a pre-assembled formwork is hung from a place where the bottom of the water is installed by a crane or is assembled at the bottom of the sea by diving work, but in either case, the formwork can be removed by a diver. In other words, the work required a great deal of labor.
[0004]
In addition, the steel mold has a problem that it is heavy, the cooperation between the crane operation on the water and the bottom operation is troublesome, and a large crane is required. In view of such a conventional problem, the present invention is a water bottom structure forming mold that can be easily assembled and removed from the water bottom by a small amount of diving work, and a water bottom embankment using the mold. It was made for the purpose of providing construction methods.
[0005]
[Means for Solving the Problems]
In order to solve the conventional problems as described above and achieve the intended purpose, the water bottom structure forming form according to the present invention is characterized by one or a plurality of forms formed of a flexible material such as rubber or synthetic rubber. The water injection part has a hollow cylindrical shape and has a sealing property, and the water injection part is provided with a water inlet that can be opened and closed, and the water injection part is expanded by filling the water injection part from the water injection part. In addition, it is constituted by one or a plurality of mold materials that expand into a predetermined shape and exhibit shape retention as a mold .
[0006]
In addition, a weight for preventing ascent is attached to the lower part of the mold material to prevent the movement, and a plurality of mold material may be connected to each other in a vertical arrangement to form a mold. Furthermore, it is good also as a tunnel shape or a dome shape with a formwork material, and making the inside into a fluidized solidification processing material filling part.
[0007]
The feature of the water bottom embankment method using the fluidized solidified soil according to the present invention is that it is formed of a flexible material such as rubber, synthetic rubber, etc., and has one or a plurality of hollow cylindrical water injection portions having a sealing property. The water injection part is provided with a water inlet that can be opened and closed, and when the water injection part is filled with water from the water inlet , the water injection part expands and expands into a predetermined shape and has shape retention as a mold. A formwork composed of one or a plurality of formwork materials to be exhibited is submerged in the bottom of the water, and water is poured into the water injection portion to form a desired formwork. After filling the fluidized soil with a fluidized solidified material with the addition of a solidifying material, and after the solidified material exhibits a certain strength, the water in the water injection portion of the mold material is drained and the mold is removed. The formwork may be dome-shaped or tunnel-shaped when expanded You can use.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a mold member of a first embodiment of the present invention, and this mold member 1 is formed of a flexible material mainly composed of rubber or synthetic rubber, and is a rectangular plate. A water injection part 12 having a sealing property in the longitudinal direction is integrally provided at the center of the width part 11 in the width direction, and the water injection part 12 can be opened and closed with an open / close valve (not shown). A water inlet 13 is provided so that water can be poured from the water inlet.
[0009]
The mold material 1 has a flat plate shape that is foldable in a state where water is not poured into the water injection section 12. Water is poured into the water injection section 12 as shown by the provisional line in FIG. The portion 12 expands and expands into a predetermined shape so as to have a protective form as a mold . This formwork material 1 itself is used as one formwork, or a combination of a plurality of them is used as a formwork.
[0010]
When forming the bottom embankment using the mold material 1 configured as described above, for example, as shown in FIG. 3, a plurality of mold materials 1, 1... Are connected to each other to form a mold 2 having a required height, and is installed in a position surrounding the periphery of the embankment forming portion of the bottom 3 as shown in FIG. The fluidized solidified material A is placed using an installation device.
[0011]
As the fluidized solidified material A, for example, a material obtained by adding a solidified material such as cement to dredged soil having a relatively high water content and fluidity is used. In order to stop at a predetermined position on the bottom of the water, an anchor 14 made of a steel chain is attached to the lower side of each formwork 1 as shown in FIG. 3 and installed at a predetermined position on the bottom of the water.
[0012]
In addition to the one having the flowing water portion 12, the mold material 1 is required to have a plurality of water injection portions 12, 12,... In the width direction of one plate-like portion 11 as shown in FIG. You may form in the height. In this case, each of the water injection sections 12 may be provided separately from each of the water injection openings, or the respective water injection sections may be communicated with each other and poured from one water injection opening.
[0013]
Further, when forming the bottom embankment, the above-mentioned formwork material is used. As shown in FIG. 6, the tunnel-like formwork 4 is installed on the bottom of the water and both ends of the tunnel are closed by the end closing sheets 5, The tunnel is formed with a fluidized solidified material filling portion 6, and the lower end of the tremy pipe B is inserted into the tunnel to fill the fluidized solidified material A, thereby forming a bank-like embankment.
[0014]
In this case, the material of the tunnel-shaped form 4 is the same as that described above, and the assembly may be one in which a plurality of water injection portions 12 are integrally formed in the circumferential direction of the tunnel as shown in FIG. Although not shown in the figure, a mold member having one or a plurality of water injection portions may be connected in the width direction.
[0015]
FIGS. 7 and 8 show a dome-shaped form 7 according to the present invention, and a water injection portion 12 that forms a part of a hemisphere when water is poured into a sheet-like portion 71 that is substantially hemispherical when expanded. , 12... Are integrated, submerged in the water bottom without injecting water into the water injection part 12, and the dome shape is maintained by expanding the sheet-like part 71 into a dome shape by injecting and expanding each of the water injection parts. It is for use. The material of this mold is the same as described above in that the anchor 14 is used.
[0016]
In the same way as described above, the lower end of the tremmy tube B is inserted into the filling portion in the mold 7 that has been expanded in this manner, and the fluidized solidified material A is placed, and the collecting surface has a dome-shaped embankment. Form.
[0017]
The dome-shaped formwork may be formed by using a substantially hemispherical formwork material that is preliminarily integrated as a whole, and is formed by connecting the formwork materials having a shape obtained by dividing the hemisphere into a plurality of parts. You may let them.
[0018]
In each of the above-described embodiments, the mold is filled with a fluidized solidification treatment material, and demolding after the formed embankment has solidified is performed by forcibly or naturally withdrawing water from each water injection section. After shrinking and eliminating the preservative formation, it is peeled off from the embankment.
[0019]
Moreover, each form mentioned above can be used also as a formwork for concrete placement other than shaping | molding of embankment as mentioned above.
[0020]
【The invention's effect】
As described above, in the present invention, the water injection portion is formed of a flexible material such as rubber or synthetic rubber, and has one or a plurality of hollow cylinders having a sealing property, and the water injection portion is opened and closed. One or a plurality of water injection ports are provided , the water injection portion expands by filling water from the water injection port to the water injection portion, expands into a predetermined shape, and exhibits shape retention as a mold. By configuring the formwork with the formwork material , it becomes easy to carry the formwork into the bottom of the water, and it is deployed into a predetermined shape by injecting water. This is possible without the support of a work machine. Moreover, at the time of mold removal, it can peel easily by draining the water in a water injection part, and the underwater operation by a diver becomes easy.
[0021]
Further, by attaching a weight for preventing levitation to the lower part of the formwork material, the movement of the formwork at the water bottom can be easily prevented.
[0022]
Furthermore, by forming the mold material into a tunnel shape or a dome shape, and making the inside into a fluidized solidified material filling portion, while effectively preventing diffusion of the fluidized solidified material placed on the bottom of the water, Construction of concrete structures is possible.
[Brief description of the drawings]
FIG. 1 is a front view of an example of a formwork material used for a formwork of the present invention.
FIG. 2 is a longitudinal sectional view of the above.
FIG. 3 is a longitudinal sectional view showing an example of a mold formed by assembling the same mold material.
FIG. 4 is a partially longitudinal perspective view of another example of a mold material used for the mold of the present invention.
FIG. 5 is a partially longitudinal perspective view of an example of the embankment method according to the present invention.
FIG. 6 is a perspective view of another example of the embankment method according to the present invention.
FIG. 7 is a plan view of still another example of the embankment method according to the present invention.
FIG. 8 is a longitudinal sectional view of the same.
[Explanation of symbols]
A Fluidity solidification treatment material B Tremy tube 1 Formwork material 2 Formwork 3 Water bottom 4 Formwork 5 End closing sheet 6 Filling part 7 Formwork 11 Plate-like part 12 Water-injecting part 13 Water-injecting port 14 Anchor 71 Sheet-like part

Claims (7)

A water injection part that is formed of a flexible material such as rubber or synthetic rubber and has one or a plurality of hollow cylindrical shapes and has a sealing property, and the water injection part is provided with a water injection port that can be opened and closed. A water bottom structure composed of one or a plurality of mold materials that expands into a predetermined shape by filling water into the water injection portion from the water inlet and expands into a predetermined shape and exhibits shape retention as a mold. Formwork form.   The formwork for water bottom structure construction according to claim 1, wherein a weight for preventing floating is attached to a lower part of the formwork material.   The formwork for water bottom structure construction according to claim 1 or 2, wherein a plurality of formwork members are connected to each other in a vertical arrangement. A water injection part that is formed of a flexible material such as rubber or synthetic rubber and has one or a plurality of hollow cylindrical shapes and has a sealing property, and the water injection part is provided with a water injection port that can be opened and closed. Filling the water injection part with water from the water inlet expands the water injection part, expands into a predetermined shape, and is shaped into a tunnel with one or more mold materials that exhibit shape retention as a mold, A formwork for creating a water bottom structure in which the tunnel-shaped interior serves as a fluidized solidification material filling portion. A water injection part that is formed of a flexible material such as rubber or synthetic rubber and has one or a plurality of hollow cylindrical shapes and has a sealing property, and the water injection part is provided with a water injection port that can be opened and closed. Filling the water injection part with water from the water inlet expands the water injection part, expands into a predetermined shape and is molded into a dome shape with one or a plurality of mold materials that exhibit shape retention as a mold, Form for forming a water bottom structure in which the inside of the dome is used as a fluidized solidification material filling portion. A water injection part that is formed of a flexible material such as rubber or synthetic rubber and has one or a plurality of hollow cylindrical shapes and has a sealing property, and the water injection part is provided with a water injection port that can be opened and closed. Forming of one or a plurality of formwork materials in which the water injection part expands by filling water into the water injection part from the water inlet , expands into a predetermined shape and exhibits shape retention as a formwork Is poured into the water injection section to form a desired formwork, and the inside of the partition partitioned by the formwork is filled with a fluidized solidification treatment material in which a solidification material is added to fluid soil such as clay. And after a fixed intensity | strength is expressed to this solidification processing material, the water bottom embankment method by the fluidized solidification processing soil characterized by draining the water in the water injection part of the said formwork material, and removing this formwork. The flow according to claim 6, wherein a mold that becomes a dome-like shape or a tunnel-like shape at the time of spreading is installed on the water bottom with the embedding portion of the mold material, and the fluidized solidification processing material is filled in the mold. Water bottom embankment method using soil that has been solidified.

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