JPH055361A - Multi-step placing and form device for concrete structure - Google Patents

Abstract

PURPOSE:To improve the efficiency and safety of work by setting forms to be automatically moved, in the execution of the work of a dam or the like. CONSTITUTION:With forms 2 and vertical channel forms 5, concrete layers C1-C3 with vertical channels S arranged on wall surfaces are placed. When the concrete layer 3 is started to be cured, then the vertical channel forms 5 are lifted to the next forming positions. In a state that the forms 2 are bound to the vertical channels S with form binding cylinders 16, 18, a lift cylinder 11 is shrunk, and as ascending or descending frame 7 is lifted up. In a state that the ascending or descending frame 7 is bound to the vertical channels S with a frame binding cylinder 21 and the form 2 is separated from the vertical channels S, the lift cylinder 11 is extended and the form 2 and a vertical frame 3 are moved upward. The vertical frame 3 is bound to the ascending or descending frame 7 with a vertical frame binding cylinder 22, and the next concrete layer is placed. Each process is repeated in order, and the work of a plurality of concrete layers is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a high-rise concrete structure such as a water storage dam by placing concrete layers in multiple stages, and a formwork apparatus for carrying out the method.

[0002]

2. Description of the Related Art Conventionally, when constructing a dam, an anchor bolt embedded in a lower concrete layer was used to assemble a formwork with a nut, and concrete was placed in the formwork to form an upper concrete layer. .. When relocating the formwork, the worker disassembled the formwork on the scaffolding, lifted it with a cable crane, etc., and assembled it in the upper concrete layer.

[0003]

Therefore, according to the conventional construction method, it is necessary to move the formwork manually, the work efficiency is poor, and there is a risk associated with work at a high place. SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-stage construction method for concrete structures and a formwork apparatus that can transfer the formwork efficiently and safely.

[0004]

In order to solve the above-mentioned problems, in the first invention, a forming frame for forming a concrete wall surface and a concrete wall surface are opened and a receiving surface is formed inside. Forming a concrete layer using the vertical groove form for forming the formed vertical groove, and forming with the concrete wall fixed to the forming frame using the vertical groove receiving surface. The process of pulling up the elevating frame supported by the molding frame, fixing the elevating frame to the concrete wall surface using the receiving surface of the vertical groove at the raised position, and the forming frame with the receiving surface of the vertical groove. A step of pulling up the molding frame to the next molding position in a state of being separated from the fixed state was performed, and each of the above steps was sequentially repeated to construct a plurality of concrete layers.

A second aspect of the invention includes the step of pulling up the flute forming frame to the next forming position when the concrete layer begins to harden. A third aspect of the invention includes a step of burying the vertical groove forming frame in a concrete layer and connecting and arranging the next vertical groove forming frame to the vertical groove forming frame.

According to a fourth aspect of the present invention, there are provided a molding frame for molding the wall surface of the concrete layer, and a vertical groove molding frame for forming a vertical groove having an opening on the wall surface of the concrete layer and having a receiving surface inside. An elevating frame supported by the forming mold below the forming mold so as to be able to move up and down, and a drive unit interposed between the forming mold and the elevating frame to move them closer to and apart from each other, First fixing means for fixing the molding formwork to the wall surface position of the concrete layer using the receiving surface and releasing the fixing, and for fixing the elevating frame to the concrete wall surface using the receiving surface. The second fixing means capable of releasing the fixing is provided.

[0007]

According to the multi-step driving method of the present invention, the forming mold is fastened and disengaged by utilizing the receiving surface of the vertical groove, and
It is pulled up to the next molding position by the driving means. Therefore, the molding frame can be automatically transferred, and the work efficiency and safety are improved. Further, by pulling up the vertical groove forming frame with a lifting actuator or the like, the vertical groove forming frame can be automatically transferred and reused. When the vertical groove forming frame is embedded in the concrete layer, the vertical groove forming frame can be diverted as a vertical groove reinforcing insert, and further, the frame transfer time can be shortened.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment in which the present invention is embodied in a multi-stage driving method for a water storage dam and a formwork apparatus will be described with reference to FIGS. 1 is a front view showing the whole formwork apparatus, FIG. 2 is a side view of the formwork apparatus for explaining the placing process, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIG. B sectional view taken along line B, FIG. 5 is a sectional view taken along line CC of FIG. 2, FIG. 6 is a side view of the formwork apparatus for explaining the pulling up process of the vertical groove forming formwork, and FIG. 7 is for explaining the pulling up process of the elevating frame. Side view of the formwork device,
FIG. 8 is a side view of the mold frame device for explaining the process of pulling up the molding frame.

As shown in FIGS. 1 and 2, the mold apparatus 1 is provided with a metal mold 2 for molding the walls of the concrete layers C1 to C3. Three vertical frames 3 are fixed to the molding frame 2, an electric chain block 4 as a lifting actuator is connected to the upper end of the vertical frame 3, and the concrete layer C1 is connected to the lower end thereof.
The metal vertical groove forming frame 5 for forming the vertical groove S is hung on the wall surface of C3. The vertical groove forming mold 5 is slightly longer than the height of the concrete layers C1 to C3 and has a trumpet-shaped cross section (see FIGS. 3 to 5).

Below the molding frame 2, the molding frame 2 is formed.
The vertical frame 3 supports an elevating frame 7, and the elevating frame 7 is provided with three guide tubes 8 that are inserted into the vertical frame 3 and a horizontal rod 9 that connects the respective guide tubes 8. .. Two lift cylinders 11 are installed between the horizontal rod 9 and the horizontal rod 10 of the molding frame 2 as drive means for moving the lifting frame 7 and the molding frame 2 closer to each other. .. In addition, at the lower end of each vertical frame 3, a roller 12 that abuts against the wall surface of the concrete layers C1 to C3, a jack 13 that presses the roller 12 against the wall surface by manual operation, and peels off the molding frame 2, and the same. A scaffold 14 on which an operator rides when operating the jack 13 is provided.

An upper frame fastening cylinder 16 is installed on each vertical frame 3 at a position corresponding to the upper portion of the molding frame 2.
As shown in FIG. 3, the upper frame fastening cylinder 16 is provided with a clamper 17 that is inserted into the vertical groove forming frame 5, and when contracted, the clamper 17 is located inside the vertical groove S on the left and right receiving surfaces Sa.
Is fixed to the vertical groove S via a vertical groove mold 5, and the molding frame 2 is fastened to the vertical groove S. Clamper 17 at extension
Is released from the press-contacting fixed state, and the molding frame 2 is disengaged from the vertical groove S. A lower formwork fastening cylinder 18 is installed on each vertical frame 3 below the molding formwork 2. As shown in FIG. 4, the lower frame fastening cylinder 18 is provided with a clamper 19 which is inserted into the vertical groove S and pressed against the receiving surface Sa, and when contracted, the molding frame 2 is pressed by the clamper 19 via the vertical frame 3. Is fastened to the vertical groove S, and the molding frame 2 can be separated from the vertical groove S when extended. The upper mold fastening cylinder 16 and the lower mold fastening cylinder 18 constitute a first fixing means.

Frame fastening cylinders 21 are installed on both sides of each guide tube 8 of the elevating frame 7, and vertical frame fastening cylinders 22 are installed on the upper surface of each guide tube 8. As shown in FIG. 5, a clamper 23, which is inserted into the vertical groove S and is brought into pressure contact with the receiving surface Sa, is fixed to the guide tube 8, and when the frame fastening cylinders 21 are extended, the lifting frame 7 is provided.
Are fastened to the vertical groove S via the clamper 23, and the elevating frame 7 is disengaged from the vertical groove S when contracted. The vertical frame fastening cylinder 22 is provided with a pressing plate 24 that presses the vertical frame 3, and is configured to fasten the vertical frame 3 to the elevating frame 7 by the pressing plate 24 when extending and to disengage it when contracting. The frame fastening cylinder 21, the vertical frame fastening cylinder 22 and the like constitute second fixing means. In addition,
The cylinders 11, 16, 18, 21, 22 are connected to a hydraulic unit (not shown) installed on the ground or the like, and are remotely operated in a safe place.

Next, a multi-stage dam construction method using the frame apparatus 1 having the above structure will be described. Now, Figure 2
Shows the state immediately after placing the concrete layer C3 after the concrete layers C1 and C2 are completely solidified, the wall surface of the concrete layer C3 is formed by the forming frame 2, and the vertical groove S is formed by the vertical groove forming frame. 5, respectively.
When the concrete layer C3 begins to harden, first, the upper form fastening cylinder 16 is extended and the clamper 17 thereof is disengaged from the vertical groove forming form 5. Then, the electric chain block 4 is driven, and as shown in FIG. 6, the vertical groove forming frame 5 is pulled up to the forming position of the next stage. Then, in this state, the concrete layer C3 is cured.

When the predetermined curing period ends, the elevating frame 7 is pulled up. Here, first, the vertical frame fastening cylinder 22 is contracted, the pressing force of the pressing plate 24 is released, and the vertical frame 3 is disengaged from the elevating frame 7. Then
The frame fastening cylinder 21 is contracted, and the lifting frame 7
The clamper 23 is separated from the receiving surface Sa of the vertical groove S.
Next, as shown in FIG. 7, the lift cylinder 11 is contracted, and the elevating frame 7 is pulled up to the concrete layer C2. Then, the frame fastening cylinder 21 is extended,
The elevating frame 7 is fastened to the receiving surface Sa of the vertical groove S via the clamper 23. When the elevating frame 7 is raised, the clamper 23 is guided by the vertical groove S, so that the elevating frame 7 is not likely to separate from the wall surfaces of the concrete layers C1 and C2.

When the elevating frame 7 is fastened and fixed, the molding frame 2 is pulled up to the next molding position. Here, first, the lower frame fastening cylinder 18 is extended, the clamper 19 thereof is disengaged from the vertical groove S, and the lower end of the molding frame 2 is released. Then, the roller 12 is pressed against the wall surface of the concrete layer C1 by the jack 13, and the molding formwork 2 is separated from the wall surface of the concrete layer C3. In this state, as shown in FIG. 8, the lift cylinder 1
1 is extended, the vertical frame 3 is raised, and the molding frame 2 is pulled up integrally with the vertical frame 3 to the next molding position. Then, the roller 12 is returned by the jack 13 and the inclination of the molding frame 2 is corrected. Next, the vertical frame fastening cylinder 22 is extended and the vertical frame 3 is fastened to the elevating frame 7. continue,
The lower frame fastening cylinder 18 is contracted, and the lower end of the molding frame 2 is fastened to the wall surface of the concrete layer C3 via the vertical frame 3. After that, the upper mold fastening cylinder 16 is contracted, and the molding mold 2 and the vertical groove molding mold 5 are coupled.
In this state, the next concrete layer C4 is placed.

After that, a plurality of concrete layers are laid in multiple stages by sequentially repeating the above steps. Therefore, according to the multi-step driving method of the first embodiment, the molding frame 2 can be automatically transferred without manual work, and the manual work can be significantly reduced, and the work efficiency and safety can be improved.
In addition, the vertical groove forming frame 5 can also be automatically transferred by the electric chain block 4 and reused. Further, according to the mold frame device 1 of the first embodiment, the three vertical frames 3 are fixed to the molding frame 2 and the lifting frame 7 is supported by these vertical frames 3, Figure 1
With the structure shown in (3), the entire apparatus can be constructed robustly, and with this, the molding formwork 2 can be reliably transferred, and the multi-step dam construction method can be successfully carried out.

Next, a second embodiment of the present invention will be described with reference to FIGS.
2 will be described. 9 is a front view showing the whole formwork device for a dam, FIG. 10 is a side view of the formwork device for explaining the placing process, and FIG. 11 is a side view of the formwork device for explaining the lifting process of the elevating frame. FIG. 12 is a side view of the formwork apparatus for explaining the process of pulling up the molding formwork.

The formwork apparatus 1 of the second embodiment is not provided with a lifting actuator for pulling up the vertical groove forming formwork 5.
Therefore, each vertical frame 3 does not project upward from the upper end of the molding frame 2. The other configurations are similar to those of the first embodiment, and the same reference numerals are given to the drawings and the description thereof will be omitted. Further, in the multi-step casting method of the second embodiment, the vertical groove forming mold 5 is embedded (embedded) in each of the concrete layers C1 to C4, and the next vertical groove forming is performed on the embedded vertical groove forming mold 5. The formwork 5 is connected. The other steps are the same as in the first embodiment.

In the second embodiment, the multi-step driving method is carried out as follows. FIG. 10 shows a state immediately after placing the concrete layer C3, and the vertical groove forming frame 5 is embedded in the vertical groove S of each of the concrete layers C1 to C3. When the curing period of the concrete layer C3 ends, the vertical frame fastening cylinder 22 is contracted, the vertical frame 3 is disengaged from the elevating frame 7, and then the frame fastening cylinder 21 is contracted, and the elevating frame 7 is dissociated from the vertical groove S. It Next, as shown in FIG. 11, the lift cylinder 11 is contracted, the elevating frame 7 is pulled up to the concrete layer C2, and at that position, the frame fastening cylinder 21 is extended and the elevating frame 7 is fastened to the vertical groove S. ..

Next, the upper mold fastening cylinder 16 and the lower mold fastening cylinder 18 are respectively extended to separate the upper and lower parts of the molding form 2 from the vertical grooves S, and then the forming mold is formed by the rollers 12. 2 is separated from the wall surface of the concrete layer C3. Then, as shown in FIG. 12, the lift cylinder 11 is extended and the vertical frame 3 and the molding frame 2 are pulled up. Then, after the roller 12 is returned, the vertical frame fastening cylinder 22 is extended and the vertical frame 3 is moved up and down.
Will be concluded.

In this state, the following vertical groove forming frame 5 is connected and arranged on the vertical groove forming frame 5 embedded in the concrete layer C3, and if necessary, both of them can be screwed or welded. Be connected. Then, the lower formwork fastening cylinder 18
Is contracted, and the lower end of the molding frame 2 is the concrete layer C.
While being fastened to the wall surface of 3, the upper mold fastening cylinder 16 is contracted, the molding mold 2 and the vertical groove molding mold 5 are joined, and the next concrete layer C4 is placed therein.

Therefore, also by the multi-step driving method of the second embodiment, the molding formwork 2 can be automatically transferred to improve the working efficiency and safety. Further, since the vertical groove forming frame 5 is embedded in each of the concrete layers C1 to C4, these can be diverted as inserts for reinforcing the vertical groove S, and
Compared with the first embodiment, it is possible to shorten the formwork transfer time.

The present invention is not limited to the above-described embodiments, but the roller 12 can be driven by a hydraulic jack to omit the scaffold 14 or replace the electric chain block 4 with a hydraulic cylinder. The purpose of the present invention is to use an electric hoist, an electric winch or the like, to make the shape of the vertical groove S into an L-shaped cross section having a receiving surface, or to apply it to construction of various high-rise concrete structures such as retaining walls. It is also possible to appropriately change and embody it within a range that does not depart from.

[0024]

As described in detail above, according to the present invention, the following effects are exhibited. (1) The molding form can be automatically transferred, and work efficiency and safety can be improved. (2) The vertical groove forming frame can be automatically transferred and reused. (3) The vertical groove forming frame can be diverted as a vertical groove reinforcing insert, and the frame transfer time can be shortened. (4) The entire formwork apparatus can be robustly constructed, and thus the molding formwork can be reliably and automatically transferred.

[Brief description of drawings]

FIG. 1 is a front view showing the whole formwork apparatus according to a first embodiment of the present invention.

FIG. 2 is a side view of the formwork apparatus of FIG. 1 for explaining the placing process.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

5 is a cross-sectional view taken along line CC of FIG.

FIG. 6 is a side view of the frame device of FIG. 1 for explaining the pulling up process of the vertical groove forming frame.

FIG. 7 is a side view of the formwork apparatus of FIG. 1 for explaining the lifting process of the lifting frame.

FIG. 8 is a side view of the formwork apparatus of FIG. 1 for explaining the pulling-up process of the molding formwork.

FIG. 9 is a front view showing the entire formwork apparatus according to the second embodiment of the present invention.

FIG. 10 is a side view of the formwork apparatus of FIG. 9 for explaining the placing process.

FIG. 11 is a side view of the formwork device of FIG. 9 for explaining the lifting process of the lifting frame.

FIG. 12 is a side view of the formwork apparatus of FIG. 9 for explaining the process of pulling up the molding formwork.

[Explanation of symbols]

1 Formwork Device, 2 Forming Form, 3 Vertical Form, 4 Electric Chain Block, 5 Vertical Groove Forming Form, 7 Elevating Frame, 11 Lift Cylinder as Driving Means, 16 1st
Upper formwork fastening cylinder as a fixing means of 18
Lower formwork fastening cylinder as a means for fixing
A second frame fastening cylinder as a fixing means for the second
Vertical frame fastening cylinders as fixing means of C1, C1 to C4 concrete layers, S vertical groove, Sa receiving surface.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukihisa Inagawa 144 Shijo, Motosu-gun, Gifu Prefecture Gifu Industrial Co., Ltd. (72) Inventor Koji Iwata 144 Shijo-cho, Motosu-gun Gifu Prefecture Industry Co., Ltd.

Claims (1)

Claims: 1. A molding frame for molding a concrete wall surface, and a vertical groove mold for molding a vertical groove opened on the concrete wall surface and having a receiving surface inside. The step of placing a concrete layer using the frame and the step of pulling up the elevating frame supported by the molding frame with the molding frame fixed to the concrete wall using the receiving surface of the vertical groove. Then, in the state where the elevating frame is fixed to the concrete wall surface by using the receiving surface of the vertical groove at the raised position, and the forming frame is disengaged from the fixing to the receiving surface of the vertical groove, The process of pulling up to the molding position of
A multi-step construction method for a concrete structure, characterized in that a plurality of concrete layers are constructed by sequentially repeating the above steps. 2. The multi-stage construction method for a concrete structure according to claim 1, further comprising a step of pulling up the flute forming frame to a next forming position when the concrete layer starts to harden. 3. A step of burying the vertical groove forming mold in a concrete layer and connecting and arranging the next vertical groove forming frame to the vertical groove forming frame. The multi-step construction method for the concrete structure of paragraph 1. 4. A molding frame for molding a wall surface of a concrete layer, a vertical groove molding frame for forming a vertical groove having an opening on the wall surface of the concrete layer and having a receiving surface inside, and An elevating frame which is supported by the molding frame so as to be able to move up and down below the molding frame, a driving means which is interposed between the molding frame and the elevating frame, and moves them closer to and away from each other, and the receiving surface. Is used to fix the molding frame to the wall surface position of the concrete layer, and the first fixing means capable of releasing the fixation and the receiving surface are used to fix the elevating frame to the concrete wall surface. A multi-stage formwork apparatus for a concrete structure, comprising a second fixing means capable of releasing the fixation.