JPS6332258Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is applicable to liquid-tight concrete structures that require lining to completely prevent liquid leakage, such as large oil storage tanks, water tanks, and other tanks for volatile chemical liquids. Concerning wall formwork.

Conventionally, for concrete structures such as large oil storage tanks, water tanks, and chemical tanks, which consist of walls that require lining with steel plates or the like, lining was usually constructed after constructing the concrete walls.

In such a case, the present invention uses a lining material as a shearing plate for the concrete formwork, so that the above-mentioned wall lining construction can be carried out at the same time as concrete construction, thereby making it possible to construct the wall lining in a labor-saving and rational manner. Its purpose is to provide formwork. Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a sectional view of a concrete wall 1 showing an embodiment of the present invention, with the right side of the figure showing the inside of the wall and the left side of the figure showing the outside of the wall. The wall 1 is constructed on a concrete floor slab 2, and the wall 1 shown in FIG. 1 shows the first stage of the wall 1 and is extended further upward.

3 shows the formwork of the present invention, in which the lower ends of the vertical members of a lattice-like form frame 4 in which a plurality of vertical members are connected by horizontal connecting members are connected to an anchor frame 9 with pins parallel to the wall surface to form an anchor frame. The formwork 3 is made to support the reaction force of the formwork, and is structured so that it can be rotated in a direction away from the wall surface so that the weir plate is almost horizontal so that it can be raised and raised freely, and a lining material is used as the weir plate 5 of this formwork 3. This formwork is characterized in that it is equipped with a removable fixture 6 for fixing it to the formwork frame 4, and that a connecting portion is provided only above the formwork on the other side of the wall and the concrete.

The formwork frame 4 has a lattice-like structure consisting of vertical members erected at regular intervals in the horizontal direction of the wall 1, that is, the depth direction in the figure, and horizontal connecting members 7 that horizontally connect the vertical members. It has a frame structure. The lower end of the longitudinal member of this formwork frame 4 is connected to an anchor frame 9 by a pin 8 parallel to the wall surface.
It is attached so that it can be raised and lowered around a pin 8 so as to be in a prone state as shown in a. As a result, the weir plate, that is, the lining material 5 which has been processed to the final state, can be easily attached to a predetermined position of the formwork frame lying prone on the ground with the shear plate surface substantially horizontal.

The upper end of the form frame 4 is connected to a form 11 on the outside of the wall 1 by pins 10 so as to be removably connected thereto. Further, the upper end of the form frame 4 is pulled and supported by a tension chain 14 having a turnbuckle 13 to a retaining H-beam 12.

The weir plate 5 is fixed to the formwork frame 4 at the top and bottom by removable fixtures 6 such as a shank vise, and after being used as a weir plate during concrete pouring, if the fixtures 6 are removed, it can be used immediately. It becomes the inner lining of the wall 1.

In the formwork of the present invention, the horizontal force of the wall concrete lateral pressure is transmitted from the formwork frame 4 to the retaining H-beam 12 via the anchor frame 9, and
supports. The buoyancy force due to the wall concrete side pressure is transmitted from the frame 4 to the slab concrete 2 via the anchor frame 9 and the anchor bolts 15.

Next, the assembly order of the formwork of the present invention is as follows.

(1) After installing anchor bolts 15 and retaining H-beams 12, concrete slab 2 is poured and cured.

(2) Adjust the anchor frame 9 with the wooden cover 16 and attach and secure it to the anchor bolts, etc.

(3) Align the pin 8 attachment part of the formwork frame 4 with the pin 8 attachment position of the anchor frame 9, place it in a prone state (the state shown in Figure 1 4a), insert the pin 8, and connect the anchor frame 9 and the formwork. The weir plate 5 is then placed on the form frame 4, and the weir plate 5 is fixed to the form frame 4 with an easily removable fixing tool 6 such as a shank vise.

(4) Raise the formwork frame 4 around the pins 8, adjust the formwork attitude with the turnbuckles 13, and fix it in a predetermined standing position with the chain 14.

(5) Erect the outer formwork 11 and connect its top to the formwork frame 4 with pins 10 to complete the formwork assembly.

(6) Next, assemble the scaffolding for concrete pouring with the bitty frame and pour concrete. After the concrete has been cured for a specified period of time, the fixing device 6 such as a shank vise is removed, and the formwork frame 4 is fixed to the inner surface of the wall 1 as a lining material with the sheathing board 5 fixed to the inner surface of the wall 1 as a lining material. Remove it, move to the next construction position, return to step (3) above, and repeat the above.

The formwork of the present invention is constructed as described above, and as explained in detail above, concrete is poured using the lining material as a shedding plate, so concrete structures requiring lining can be quickly constructed. It has excellent adhesion between concrete and lining material, simplifies formwork, saves materials, reduces labor, and improves product quality.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a concrete wall showing an embodiment of the present invention. 1... Wall body, 2... Floor slab concrete, 3...
Formwork, 4... Formwork frame, 5... Shelter board (also serves as lining material), 6... Fixture, 7... Horizontal tie material, 8... Pin, 9... Anchor frame,
10...pin, 11...outer formwork, 12...retainer H
Shaped steel, 13... Turnbuckle, 14... Chain, 15... Anchor bolt, 16... Wooden camber.

Claims (1)

[Scope of Claim for Utility Model Registration] In a formwork for a liquid-tight concrete wall that requires a steel lining, a plurality of vertical members are connected by horizontal connecting members to form a grid, and the upper ends of the vertical members are is removably connected to the formwork on the other side of the wall, and the lower end of the vertical member is connected to the anchor frame with a pin parallel to the wall surface, so that the anchor frame supports the reaction force of the formwork, and the shedding plate surface a formwork frame configured such that the entire formwork can be freely rotated in a direction away from the wall surface around the pin joint so that the steel lining is in a substantially horizontal position; and a detachable formwork frame that fixes the steel lining to the formwork frame. A formwork for a liquid-tight concrete wall, characterized by being equipped with a fixing device.