JP3042752B2 - Formwork joining structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining structure of a formwork, and more particularly, to a joining structure of a formwork, for example, for joining formwork used for placing concrete.

[0002]

2. Description of the Related Art Examples of a conventional concrete casting mold are disclosed in Japanese Patent Application Laid-Open Nos. 3-281863 and 4-70467. However, no specific study has been made on the joining structure of the formwork.

[0003]

At the time of construction, a plurality of molds are joined to each other. However, depending on the joining structure, there is a problem that joining workability is poor. In addition, there is also a risk of separation after joining. SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide a joining structure of a mold that can improve joining workability and prevent detachment after joining.

[0004]

SUMMARY OF THE INVENTION The present invention, fit the male end of the first mold and a female end of the second mold having a contact portion at both ends in the thickness direction The joint structure of the formwork
I, the hollow block structure male side end comprising a projection projecting in a direction perpendicular to those one point of contact portion formed on the inner side than the virtual circle plane about the the wall and the mold main surface Has,
The female mold end is the wall surface formed outside the arc surface and the main surface of the formwork
And a concave portion to fit fits to the wall and the projection forming a part of
It has a hollow block structure, and the first and second molds are
Rotating at least one of the molds in contact
The male side end and female side end are fitted by
Side end and female mold side end are fitted from the direction parallel to the mold main surface
At least one of them is elastically deformed.
And the protrusion and the recess are engaged with each other.

[0005]

The wall surface of the male side end is formed inside the virtual arc surface, and the wall surface of the female side end is formed outside the virtual arc surface. By rotating at least one of the molds while the molds are in contact with each other, the female end and the male end are fitted. Also, by abutting the first mold and the second mold in the same plane, at least one of the male side end and the female side end is elastically deformed and both are fitted. When the male side end and the female side end are fitted, the projection formed on the male side end and the recess formed on the female side end are engaged.

[0006]

According to the present invention, 2
Since any one of the joining methods can be arbitrarily selected, joining workability can be improved. In addition, since the protrusion formed on the male side end and the recess formed on the female side end are engaged with each other, it is possible to prevent the mold from being detached after joining. Forming a locking surface for locking the protrusion in the concave portion can more reliably prevent the mold from detaching.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the accompanying drawings.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A formwork joining structure 10 according to this embodiment shown in FIGS. 1 to 5 includes a first formwork 16 and a second formwork 18 for placing a concrete wall 14 in a basement 12 (FIG. 5). And for joining. The first mold 16 includes a first panel 20a and a second panel 22a arranged in parallel with each other. The first panel 20a and the second panel 22a are connected by a plurality of ribs 24a extending in the vertical direction, and the air layer formed by the first panel 20a, the second panel 22a, and the ribs 24a is continuously insulated in the horizontal direction. It becomes the layer 26a. A female mold 2 having a substantially concave cross section is provided at one end of the heat insulating layer 26a.
8 are formed extending in the vertical direction. And the first panel 2
A plurality of hollow blocks 30a extending in the vertical direction are formed at predetermined intervals on the concrete wall 14a main surface at 0a, and a permeable layer 32a such as a nonwoven fabric is fixed to the concrete wall 14 main surface of each block 30a. . The space surrounded by the first panel 20a, the block 30a, and the water-permeable layer 32a becomes the water conduit 34a. Further, the block 30a formed at the side end of the first panel 20a is provided with a water guide space forming member 36a for forming a water guide space 38 at the joint in cooperation with a water guide space forming member 36b described below, The side end of the water-permeable layer 32a is supported by the water-guiding space forming member 36a.

The second mold 18 is, like the first mold 16,
A male mold 40 including a heat insulating layer 26b, a water conduit 34b, a water permeable layer 32b, and the like is provided at one end of the heat insulating layer 26b. It is formed to extend. The block 30b formed at the side end of the first panel 20b has a water guide space forming member 36 abutting on the water guide space forming member 36a formed in the first mold 16.
b is formed, and the side end of the water-permeable layer 32b is supported by the water-guiding space forming member 36b.

The female mold 28 of the first mold frame 16 and the male mold 40 of the second mold frame 18 are fitted together with contact portions 42 at both ends in the thickness direction of the heat insulating layers 26a and 26b. Male 40
As can be clearly understood from FIG. 3, a direction perpendicular to the wall surface 46 formed on the inner side of the virtual arc surface 44 and the main surface of the second mold 18 drawn around the point A on the contact portion 42. And a projection 48 protruding from On the other hand, the female mold 28 has a wall 50 formed outside the virtual arc surface 44 and a male mold 40.
And a concave portion 52 that fits with the protrusion 48. Therefore,
The female mold 28 and the male mold 40 are brought into contact with each other obliquely at the point A (FIG. 3), and the two molds are joined by rotating the second mold 18 relative to the first mold 16. Is done. On the other hand, as shown in FIG. 4, when the first mold 16 and the second mold 18 are abutted in the same plane, at least one of the female mold 28 and the male mold 40 is elastically deformed, so that the two molds 16 and 18 are both deformed. Are fitted to each other to join the two formwork. That is, the protrusion 4 is formed on the inclined surface 54 on the entrance side of the concave portion 52 in the female mold 28.
The female mold 28 is deformed outward by the abutment of the male mold 8, and the male mold 40 is deformed inward, and the two are fitted.

The projection 48 and the recess 52 are engaged with the first mold 16 and the second mold 18 in a state of being joined, so that the first mold 16 and the second mold 18 are separated from each other. Even when a force is applied, the joint is not separated. That is, when a force acts in the separating direction, the protrusion 48 is
The two steep locking surfaces 56 are abutted and locked, thereby preventing the detachment of the joint.

Referring to FIG. 5, when casting concrete wall 14, first, a groove 64 is formed on the upper surface of slab 62 in which spring tank 60 is formed, and a water passage 66 is formed in groove 64. Is arranged. And the bottom surface is a water passage 66
The first mold 16 is assembled on the water passage 66 so as to contact the stopper 68 of the second mold 1.
8 are joined. Here, the first mold 16 and the second mold 18
As shown in FIG. 3, the male mold 40 of the second mold 18 is brought into contact with the female mold 28 of the first mold 16 from a diagonal direction at a point A, as shown in FIG. May be employed by rotating the first mold 16 and the second mold 18 in the same plane by rotating the first mold 16 and the second mold 18 as shown in FIG. 28 and male 40
And a method of forcibly fitting and joining them. When the two molds are joined, the projection 48 of the male mold 40 and the recess 52 of the female mold 28 are engaged, and the water guide space forming member 36a
And the water guide space forming member 36b are in contact with each other.

After the formwork is completed, the concrete wall 14 is cast between the first formwork 16 and the second formwork 18 and the concrete retaining wall 70. When the concrete wall 14 is cast, the cement paste of the concrete becomes permeable layer 32a.
And 32b so that the concrete wall 14 and the first formwork 16 and the second formwork 18 are joined without using special joining members.

Before the concrete wall 14 is hardened, the excess water of the concrete flows through the water permeable layers 32a and 32b into the water conduits 34a and 34b and the water conduit space 38, and flows down there. The water is discharged to the spring tank 60 through the provided water pipe 72.
On the other hand, after the concrete wall 14 is hardened, the water leaked to the surface of the concrete wall 14 through the cracks 74 generated in the concrete walls 14 and 70 is discharged to the spring tank 60 in the same manner as the surplus water.

After the hardening of the concrete wall 14, a non-combustible material 76 such as a gypsum board, a calcium silicate plate, or an aluminum decorative material is attached to the main surfaces of the second panels 22a and 22b as necessary. According to this embodiment, one of the two joining methods (FIGS. 3 and 4) can be arbitrarily selected according to the situation at the site, so that the joining workability can be improved.

Further, it is possible to prevent the first mold 16 and the second mold 18 from coming off after joining. Further, water leaked to the vicinity of the joint through the crack 74 (FIG. 5) or the like is transferred to the water supply space 38.
, Water can be prevented from leaking into the chamber 12 without interposing a sealing material between the female mold 28 and the male mold 40. In the above-described embodiment, the joining structure 10 is connected to the headraces 34a and 34b and the permeable layers 32a and 32b.
Although the case where the present invention is applied to a driving type formwork for an underground wall having
The present invention can be applied to a mold 78 having no headrace and a permeable layer.

In the above-described embodiment, the wall surface 46 of the male mold 40 and the wall surface 50 of the female mold 28 are formed along the imaginary arc surface 44 centered on the point A.
6 and 50 may include planes 80 and 82, for example, as shown in FIGS.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is a perspective view showing the embodiment of FIG. 1;

FIG. 3 is an illustrative view showing a joining method of the embodiment in FIG. 1;

FIG. 4 is an illustrative view showing another joining method of the embodiment in FIG. 1;

FIG. 5 is an illustrative view showing an assembled state of a mold;

FIG. 6 is an illustrative view showing a state where the embodiment of FIG. 1 is applied to another mold;

FIG. 7 is an illustrative view showing another embodiment of the present invention;

FIG. 8 is an illustrative view showing another embodiment of the present invention;

FIG. 9 is an illustrative view showing another embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Joining structure of a mold 16 ... 1st mold 18 ... 2nd mold 26a, 26b ... Heat insulation layer 28 ... Female mold 40 ... Male mold 42 ... Contact part 44 ... Virtual arc surface 46, 50 ... Wall surface 48 ... Projection 52 ... recess

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazutaka Takada 64 Ishizu-Kitacho, Sakai City, Osaka Inside the Kubota Vinyl Pipe Factory (72) Inventor Manabu Mochizuki 64 Ishizukita-cho, Sakai City, Osaka Kubota Vinyl Co., Ltd. Inside a pipe factory (56) References Japanese Utility Model Application Sho 57-198243 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E04G 9/00-9/00 102

Claims (2)

(57) [Claims] 1. A fitting the male end of the first mold and a female end of the second mold having a contact portion at both ends in the thickness direction, the joining structure of the mold there are, hollow the male side end comprising a projection projecting in a direction perpendicular to the center and the formed inside the imaginary arcuate surface wall and the mold principal point of the contact portion Has block structure
And, a before Kimesu type end wall formed outside the said arcuate surface
It has a hollow block structure including a wall surface forming a part of the mold main surface and a concave portion that fits into the projection , and the first and second molds are slightly abutted at the point.
By rotating at least one of the molds,
A side end and the female side end are fitted, and the male side end is
And the female mold side end are fitted from a direction parallel to the mold main surface.
At least one of them is elastically deformed.
And the protrusion and the recess are engaged with each other. 2. The joining structure of a formwork according to claim 1, wherein the recess has a locking surface for locking the projection when a force in a pull-out direction acts on the bonding portion.