JPH074033A - Construction method of high projection wall form - Google Patents

Abstract

PURPOSE:To erect a form based on a simple handling and construct even a high projecting wall with high accuracy and safety. CONSTITUTION:There are provided form units 6a and 6b which fix an H steel material 5 with a form panel 1 by way of vertical floor joists 8 and horizontal floor joists 9. The form units 6a and 6b are set inside and outside an existing concrete wall 4 where concrete 3 is cast. After the concrete 3 is cured, the form units 6a and 6b are stripped and erected in the upper part of the concrete wall 4. In this construction method where the above steps are repeated, the lower part of the H steel material 5 is fixed with the concrete wall 4 by means of adjusting bolts 11 when the form units 6a and 6b are erected. The upper part of the H steel material is fixed with a coupling member 7 and the degree of perpendicularity of the form panel 1 is determined by the adjusting bolts 11 and the coupling member 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a wall formwork having a high carry-out height, which is suitably applied to a concrete structure having a large blow-out internal space.

[0002]

2. Description of the Related Art In a concrete structure having a large blown-out internal space such as a nuclear fusion facility, for example, a flat surface 45
It is a huge box made of mass concrete with a floor of 2m thick, a wall of 2m thick, and a ceiling of 1.3m thick. Therefore, in the conventional construction of walls, it can be taken out up to a height of 35 m without any connection with beams or floors, and since the height of concrete pouring at one time is 4 m or less, about 10 lifts, only the wall is spliced. Will go out.

[0003]

However, in the above-mentioned conventional method, the lowermost formwork is made to follow the formwork by pulling the formwork from the floor on the first floor with a chain or pushing it with a support. It is possible to raise (vertical degree), but if it is a lift higher than that, it will not be possible to pull out the street only by pushing and pulling from the inside and outside scaffolding, and even if it can be pulled out, it is safe if it leans during concrete pouring Will cause problems.

The present invention has been made to solve the above-mentioned problems, and enables the erecting of the formwork by a simple operation, and a wall type with a high take-out height that enables accurate construction even with a considerably high take-out wall. The purpose is to provide a frame construction method.

[0005]

Therefore, in the method of constructing a wall formwork having a high take-out height according to the present invention, an H-shaped steel material 5 is fixed to a formwork panel 1 through a vertical end thickness 8 and a lateral end thickness 9. Forming units 6a, 6b are provided, and the forming unit 6a, 6b is built inside and outside the existing concrete wall 4, and the concrete 3
After placing and curing concrete, formwork units 6a, 6
It is a construction method in which b is removed from the mold and built in the upper part of the concrete wall 4, and when building the form units 6a and 6b, the lower part of the H-shaped steel material 5 is fixed to the concrete wall 4 by the adjusting bolt 11. The upper part of the H-shaped steel material 5 is fixed by the connecting member 7, and the adjusting bolt 11 and the connecting member 7 provide the verticality of the formwork panel 1. It should be noted that the numbers added to the above-mentioned configurations are compared with the drawings in order to facilitate the understanding of the present invention, and the configurations of the present invention are not limited thereby.

[0006]

In the present invention, for example, as shown in FIG.
A set of formwork units 6 is arranged inside and outside the concrete wall 4, the lower parts of the two H-shaped steel materials 5 constituting the formwork unit 6 are fixed to the concrete wall 4, and the upper part of the H-shaped steel material 5 is a connecting member. After fixing with 7 and building the formwork, concrete 3
(FIG. D) After curing, the formwork unit 6 is dismantled from the concrete wall 4 and removed from the mold, and then a set of formwork units 6 is placed on the existing concrete wall 4 in the same manner as above. , The lower part of the H-shaped steel material 5 is fixed to the concrete wall 4,
After fixing the upper part of the mold steel material 5 with the connecting member 7 to build the formwork (Fig. E), the concrete 3 is placed (Fig. F), and then the above-mentioned steps are repeated to drive the concrete wall 4 upward. I will continue.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 8 shows an example of a concrete structure to which the present invention is applied, and FIG. 8 (A) is a horizontal sectional view of the entire building, and FIG.
(B) is a vertical sectional view. The building H has, for example, a plane 4
2 open spaces with 5m x 75m and effective inner height of 35.5m
It is a huge box made of mass concrete, such as an m-thick floor, a 2 m-thick wall, and a 1.3 m-thick ceiling. The joining portions J are constructed at four places in the plane direction and at a dozen places every 4 m at maximum in the vertical direction.

FIG. 1 is a schematic view showing the construction sequence of one embodiment of the method for constructing a wall form having a high carrying out height according to the present invention. First, a formwork panel 1 is built on the bottom floor of the first floor, after adjusting the shape of the formwork panel 1 with a support 2, concrete 3 is placed (Fig. A), and a mold is applied from the concrete wall 4 after curing. The frame panel 1 is disassembled and demolded (Fig. B). next,
The two H-shaped steel materials 5 are attached to the formwork panel 1 to produce a formwork unit 6 (FIG. C), and a set of formwork units 6a and 6b is arranged inside and outside the existing concrete wall 4 to form the formwork. The lower portion of the H-shaped steel material 5 constituting the units 6a and 6b is fixed to the concrete wall 4, the upper portion of the H-shaped steel material 5 is fixed by the connecting member 7 to build the second-stage formwork, and then the concrete 3 (Fig. D). After dismantling the mold units 6a, 6b from the concrete wall 4 by a crane after curing and demolding,
Similarly to the above, one set of formwork units 6a and 6b is arranged on the upper part of the existing concrete wall 4, the lower part of the H-shaped steel material 5 is fixed to the concrete wall 4, and the upper part of the H-shaped steel material 5 is connected to the connecting member 7. After fixing with and building the third stage formwork (Fig. E),
Place concrete 3 (Fig. F). Hereinafter, the above steps are repeated, and the concrete wall 4 is spliced upward.

2 to 7 are views for explaining one embodiment of the method of installing the form unit in FIG. 1, and FIG. 2 is a view corresponding to FIG. 1 (D), concrete wall. FIG. 3 is a cross-sectional view showing a state in which the formwork unit is installed in the mold.
FIG. 4 is a front view seen from the direction A in FIG.

2 and 3, a form unit 6a and a form unit 6b are attached to the inside and outside of the concrete wall 4, and the concrete 3 of the next stage is placed between them. ing. Formwork unit 6
a and 6b are vertical edge thick 8 arranged in the vertical direction on the formwork panel 1 and lateral edge thick 9 arranged in the horizontal direction.
It is configured by fixing the H-shaped steel material 5 via. A separator 10 is embedded in the concrete wall 4, and the H-shaped steel material 5 and the separator 10 are fixed by adjusting bolts 11 and 11 to the lower portions of the formwork units 6a and 6b. The upper part is fixed by a connecting member 7, and a plurality of separators 10 are fixed between the formwork panels 1. Then, when the mold frame units 6a and 6b are built, the adjusting bolt 11 and the connecting member 7 can make the mold frame panel 1 perpendicular.

4, 5 and 6 show the details of the portion B in FIG. 2, FIG. 4 (A) is a sectional view showing the fixing structure of the vertical end thickness and the horizontal end thickness, and FIG. 4 (B) is FIG. 4 (A) is a plan view, FIG. 5 is a sectional view showing a fixing structure of a horizontal end thickness and an H-shaped steel material, and FIG. 6 is a sectional view showing a fixing structure of a separator and a vertical end thickness.

In FIG. 4, the vertical end thickness 8 is provided with two horizontal end thicknesses 9, and the bolt is bent at a right angle so as to penetrate the vertical end thickness 8 from between the two horizontal end thicknesses 9. 12 is inserted, the vertical end thick 8 side is fixed by a nut 13, and the horizontal end thick 9 side is fixed by a holding metal fitting 14 and a nut 15.

In FIG. 5, from the space between the two lateral ends 9 to H
A bolt 16 is inserted through the frame 5a of the shaped steel material 5, the H-shaped steel material 5 side is fixed by a nut 13, and the lateral thick end 9 side is fixed by a holding metal fitting 14 and a nut 15.

In FIG. 6, a connecting bolt 17 is inserted from between the two lateral end thicknesses 9 through the formwork panel 1 and connected to the separator 10. The lateral end thickness 9 side is provided with a pressing fitting 14 and a nut 15. It is fixed by. In addition, 18 is a seal member.

FIG. 7 is a sectional view showing the details of the portion C in FIG. 2 and showing the fixing structure of the H-shaped steel material and the concrete wall. H
Adjusting bolt 1 passing through frames 5a and 5b of shaped steel material 5
1 is inserted and the separator 10 is inserted through the connection nut 20.
, And the H-shaped steel material 5 side is fixed by a holding member 22, a holding metal fitting 14, and a nut 15. Also,
Below the adjusting bolt 11, the frame 5a of the H-shaped steel material 5 is provided.
The adjustment bolt 21 is inserted through the concrete wall 4
, And the H-shaped steel material 5 side is fixed by a nut 23. Then, when building the form units 6a and 6b, the lower portion of the H-shaped steel material 5 is fixed to the concrete wall 4 by the adjusting bolt 11, the upper portion of the H-shaped steel material 5 is fixed by the connecting member 7, and is connected to the adjusting bolt 11. When the verticality of the form panel 1 is to be achieved by the member 7, the H-shaped steel material 5 can be tilted in the direction of the arrow in the figure by operating the nut 15 of the adjusting bolt 11 on the upper side, and the adjusting bolt on the lower side can be tilted. 21
The H-shaped steel material 5 can be tilted in the opposite direction by operating the nut 23 of the mold unit 6 in this manner.
It is possible to easily and accurately raise the verticality of a and 6b, that is, the erecting.

Although the H-shaped steel material 5 can be tilted by the two adjusting bolts 11 and 21 in the above embodiment, it may be tilted only by the adjusting bolt 11.

[0017]

As is apparent from the above description, according to the present invention, the lower portion of the H-shaped steel material is fixed to the concrete wall by the adjusting bolts, and the upper portion of the H-shaped steel material is fixed by the connecting member. Since the verticality of the formwork panel is brought out by the connecting member, the formwork can be erected without pushing and pulling it from the scaffold with a support or a chain, and with a considerably high take-out wall. Even if there is, it can be constructed accurately and safely. Further, the form unit can be used any number of times, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a wall formwork construction method of a high carry-out height according to the present invention and showing a construction order.

FIG. 2 is a view for explaining one embodiment of the method of installing the mold unit in FIG. 1, and is a cross-sectional view showing a condition in which the mold unit is installed in a concrete wall.

FIG. 3 is a front view seen from the direction A in FIG.

4 is a detailed view of a portion B of FIG. 2, FIG. 4 (A) is a cross-sectional view showing a fixing structure of a vertical end thickness and a lateral end thickness, and FIG. 4 (B) is FIG.
It is a top view of (A).

FIG. 5 is a cross-sectional view showing the details of the portion B in FIG. 2 and showing a fixing structure of a lateral edge thickness and an H-shaped steel material.

FIG. 6 is a cross-sectional view showing details of a portion B of FIG. 2 and showing a fixing structure of a separator and a vertical end thickness.

FIG. 7 is a cross-sectional view showing details of the C portion of FIG. 2 and showing a fixing structure of an H-shaped steel material and a concrete wall.

FIG. 8 shows an example of a concrete structure to which the present invention is applied, FIG. 8 (A) is a horizontal sectional view of the entire building, and FIG. 8 (B).
Is a vertical sectional view.

[Explanation of symbols]

H ... Building, J ... Joint, 1 ... Form panel, 3 ... Concrete 4 ... Concrete wall, 5 ... H-shaped steel material, 6, 6a, 6b ...
Formwork unit 7 ... Connecting member, 8 ... Vertical end thickness, 9 ... Horizontal end thickness, 10 ... Separator 11, 21 ... Adjusting bolt, 12, 16 ... Bolt, 13,
15, 23 ... Nut 14 ... Press fitting, 17 ... Connection bolt, 18 ... Seal member 20 ... Connection nut, 22 ... Press member

Claims (1)

[Claims] 1. A formwork panel comprising a formwork unit in which an H-shaped steel material is fixed to a formwork panel through vertical and horizontal ends, and the formwork unit is built in and out of an existing concrete wall to pour concrete. Then, after the concrete is cured, it is a construction method in which the mold unit is demolded and built on the upper part of the concrete wall, and when the mold unit is built, the lower part of the H-shaped steel material is adjusted to the concrete wall. A method for constructing a wall formwork having a high take-out height, which is characterized in that the formwork panel is fixed by bolts, the upper part of the H-shaped steel material is fixed by a connecting member, and the adjusting panel and the connecting member provide the verticality of the formwork panel.