JPS5928821Y2 - Formwork for manufacturing inverted Y-shaped retaining walls - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a formwork for manufacturing an inverted Y-shaped retaining wall, which is applied, for example, to river and waterway embankments, earth retaining walls, and the like.

As shown in FIG. 1, the retaining wall a consists of a plate-shaped upright retaining wall part a' and plate-shaped leg parts d' and a'/ extending left and right from the lower part of the retaining wall part. It is formed in one piece.

Compared to existing masonry walls, concrete revetments, reinforced concrete walls, etc. built on-site, this retaining wall can withstand earth pressure and water pressure better, is extremely durable without collapsing or slipping, and shortens the construction period. It can be said that it is sufficiently effective in terms of easy construction management.

Also, this retaining wall a is manufactured in a factory using formwork, but since this retaining wall a has a special shape as mentioned above, it is made of multiple pieces as illustrated in Fig. 2. flat formwork panel... and multiple curved formwork panels 2...
Assembling ... with each other and seizing the Σ formwork is S,
As a result, not only is there a tendency for errors to occur when assembling and fixing, but also
Since the curved formwork panel 2 itself has Σ deviation, it is difficult to assemble it into a predetermined shape and size.

Also, if one side of the retaining wall a is made of a single formwork panel, the above problem can be avoided, but since the retaining wall itself becomes large, twisting and deflection will inevitably occur, and it will not be possible to make the retaining wall a exactly perpendicular to the bottom formwork panel. It is difficult to take out and assemble the parts.

Therefore, the present invention was developed as a result of studies in view of the above-mentioned conventional circumstances, and a new inverted Y-shaped formwork for manufacturing retaining walls was obtained.The purpose of this invention is to reduce the number of formwork members as much as possible. This makes it easier to assemble and adjust errors, thereby improving work efficiency and product accuracy.

The drawings showing the embodiments of the present invention will be described in detail below.The formwork 3 according to the present invention is as shown in Figs. 3 to 5.
One bottom formwork 4 for manufacturing the bottom surface of the retaining wall a, and one fixed side formwork 5 for manufacturing one side of the retaining wall part a' and the leg part a'l of the retaining wall a. side formwork 6, 7,
Two lower formworks 8 and 9 for manufacturing the lower surface of the retaining wall a,
If necessary, it is intercepted by a few formwork members including a plurality of end plates 10.

In this S, the bottom formwork 4 is reinforced with channels, angles 4b, etc. welded to the lower surface of the thick steel plate 4a, and is sufficiently rigid, and the surface is finished smooth. At the same time, it is formed to have a width that allows each of the above-mentioned formworks 5° 6, 7, 8, 9 and the end plate 10 to be placed and fixed thereon.

Further, the fixed side formwork 5, both side formworks 6, 7, and both lower side formworks 8, 9 are horizontal in top and bottom, and wall surfaces 5a, 6a, 7
a, 8a, and 9a are each formed perpendicular to the top and bottom, each curved with an appropriate curvature, and sufficiently rigid.

That is, each formwork 5...9 has a steel plate 5ct6c on the surface of the steel frame 5a, 6b, 7b, 8b, 9b, for example.
, 7c, 8c, and 9c, or a molded or molded product of hard synthetic resin, or even reinforced wood (laminated plywood) with the surface covered with synthetic resin or steel plate. Bye.

In addition, the number of points to be fixed to the bottom formwork 4 is reduced as much as possible to reduce assembly and disassembly time, thereby reducing the accumulation of mutual deviations and making it easy to adjust deviations. be.

Furthermore, as shown in FIG. 3, each of the above-mentioned formworks 5...9 is fixed to the bottom formwork 4 with dowel pins 11, etc., and each of the formworks 5...9 is fixed to the bottom formwork 4 with dowel pins 11, etc. They are removably connected by bolts or the like, but in this case, the fixed side formwork 5 is always fixed at 1 momme with respect to the bottom formwork 4, and the side formworks 6 and 7 are connected with one dowel pin. The lower formworks 8 and 9 are fixed so as to be able to rotate or move slightly using the fulcrum as a fulcrum, and the lower formworks 8 and 9 are detachably fixed.

In the above structure, when manufacturing the retaining wall a using this, the fixed side formwork 5, which has been fixed in advance to the bottom formwork 4, is placed between the same formwork 4 and the fixed side formwork 5, keeping a predetermined distance therebetween. After fixing both side formworks 6, 7 and both lower side formworks 8, 9 in a predetermined arrangement, the ends of each other are directly or end plate 10...
... to assemble the formwork 3.

In this way, in the illustrated example, two voids 12.13 are formed in opposite directions, so after placing reinforcing bars in the voids 12.13, they are filled with concrete to form an inverted Y shape. Two type retaining walls a are manufactured at a time.

When filling with concrete, hold formwork 3 horizontally.
Once the concrete curing time has elapsed, it is removed from the mold, but when using the proposed formwork 3, the fixed side formwork 5 is fixed as ix, while the left and right side formworks 6 , 7 are slightly rotated or moved to separate the surface of the concrete, and the lower formworks 8 and 9 are removed and demolded.

Therefore, after assembling the respective formworks 5, . It is only necessary to rotate or move the side formwork 6.7 slightly.

Although the embodiment shows a two-piece formwork for the retaining wall a, the present invention is not limited to this. By increasing the number of pieces, it is possible to make three pieces, four pieces, etc.
The present invention also covers such cases.

As explained above, according to the inverted Y-shaped retaining wall manufacturing formwork according to the present invention, at least two or more formworks can be formed at a time with a small number of forms.
Not only can the fixed side formwork 5 be fixed to the bottom formwork 4, but only the bottom formworks 8 and 9 need to be attached and removed, and the side formwork can be manufactured as needed. Frame 6
, 7 can be easily removed from the mold by slightly rotating or moving the molds, so the effort of assembling each mold, disassembling for demolding, and adjusting misalignment can be significantly reduced compared to conventional methods. can be reduced and work efficiency can be improved.

In addition, since the lower formworks 8 and 9 only need to be removed and the total number of assembly points is small, the accumulation of mutual misalignment is reduced. After removal, assembly can be carried out with high precision using the fixed side formwork 5 and side formworks 6 and 7, which are fixed in advance, as a reference, so it is possible to improve product accuracy and further reduce the number of formworks. Costs can be reduced by reducing

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an inverted Y-shaped retaining wall, Fig. 2 is a perspective view showing an example of a conventional formwork for manufacturing an inverted Y-shaped retaining wall, and Fig. 3 is an inverted Y-shaped retaining wall according to the present invention. FIG. 4 is a plan view showing one embodiment of the formwork for manufacturing retaining walls; FIG. 4 is a side view of the bottom formwork for the formwork; FIG.
The figure is an exploded plan view of the same formwork. a... Inverted Y-shaped retaining wall, a'... Retaining wall part, a''・-
・Legs, 4--Bottom formwork, 5--Fixed side formwork,
6, 7... Side formwork, 8, 9... Bottom formwork.

Claims (1)

[Scope of utility model registration request] A formwork for manufacturing an inverted Y-shaped retaining wall consisting of a retaining wall portion and both leg portions extending from the lower left and right sides of the retaining wall portion, which allows manufacturing the bottom surfaces of at least two retaining walls at once. one bottom formwork formed, a fixed side formwork bent symmetrically so that one side of the retaining wall part and the leg part of at least two retaining walls can be manufactured, and the above-mentioned retaining wall part and the leg part. It is equipped with two side formworks that are curved so that the other side of the part can be manufactured, and two lower formworks that are curved so that the lower side of the leg part can be manufactured, and each of the above-mentioned formworks is mutually curved. The fixed side formwork is fixed to the bottom formwork, the both side formworks are slightly movable, and both bottom formworks are fixed in a removable manner. Formwork for manufacturing an inverted Y-shaped retaining wall.