JP2982848B2 - Permanent formwork for concrete work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent formwork for concrete work.

[0002]

2. Description of the Related Art In general, concrete wall construction is carried out by assembling a formwork made of plywood or the like, pouring concrete into the formwork, waiting for hardening, removing the formwork, and performing various decorative constructions or insulating walls on the concrete wall surface. In the case of the above, the construction was performed by a procedure of attaching a heat insulating material. However,
In the case of the above-described formwork method, there is a disadvantage that the formwork is used only for constructing the wall surface, and the subsequent work of removing the formwork is extremely troublesome.

Further, since the conventional formwork is made of plywood and uses natural materials, even if it is repeatedly used, it will be eventually disposed of, and in the case of building construction, the amount of use in one building work Due to the huge amount of natural resources, natural materials are consumed significantly, and their use must be limited from the viewpoint of protecting the natural environment. From such a viewpoint, a permanent formwork for concrete work made of fiber-reinforced cement has been proposed and used in place of a conventional plywood formwork (for example, JP-A-3-293473). This type of concrete formwork has the advantage that it does not use natural resources such as wood, and it is finally integrated with the concrete to be cast, and the formwork is directly integrated with the walls or columns of the building structure. Therefore, there is an advantage that a later frame removing operation can be omitted.

[0004]

However, since the permanent form for concrete work is hard in material, it is not easy to cut the form when it is necessary to cut the form according to the dimensions of the building, and the permanent form is also cut. There is a drawback that the joining with other concrete wall forms is very troublesome because there is no engaging step at that portion.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, the present invention relates to a permanent formwork for concrete work, regardless of the area of the wall, etc., as long as the wall is designed according to the basic module. It is an object of the present invention to provide a permanent formwork for concrete work that can be easily assembled without requiring cutting or the like.

[0006]

That is, in the permanent form for concrete work of the present invention, the effective dimension L ₁ L ₂ is a / L when the pitch of the basic modules of the pillars and beams serving as the wall base material is a. A corner member 1 which is a multiple of 2 and which has two types of L-shaped cross sections in which the effective dimensions L ₁ L ₂ are different from each other by a / 2,
At least two ridges 2, 2 are formed on the back surfaces of both end edges of the corner member 1, and stair-shaped engagement step portions 3, on which the back surfaces 2A, 2A of the corner member 1 extend, are formed on the ridges 2, 2. 3, a plurality of types of plate-like bodies 4 having an effective dimension L _{3 which} is a multiple of a,
At least one of the protrusions 5 and 5 is formed on the back surface of the edge, and a stepped engagement step portion 6 is provided at one end side to be fitted with the corner member 1 and the engagement step portion is provided at the other end side. A first fiber-reinforced cement plate member 4 provided with a stepwise engaging step 6 which is symmetrical to the portion 6, and a plate 7 having an effective dimension L _{4 which} is a multiple of a. An engaging step 8 for engaging with the engaging step 6 of the first fiber-reinforced cement plate member 4.
A second fiber-reinforced cement plate member having an engaging step 8A at one end and a point symmetrical with the engaging step at the other end, and having ridges 9 and 9 formed on the back surface. It is characterized by consisting of a combination with 10.

[0007]

Next, an embodiment of the present invention will be described. 1 is a sectional view of a corner member according to an embodiment of the present invention, FIG. 2 is a sectional view of a first fiber-reinforced cement plate member, and FIG. 3 is a sectional view of a second fiber-reinforced cement plate member. 4 and 5 are cross-sectional views showing a use state.

In the permanent form for concrete work according to the present invention, as shown in FIG. 1, the effective dimension L ₁ L ₂ is a / 2 when the pitch of the basic modules of the pillars and beams as the wall base material is a.
And two types of corner members 1 each having an L-shaped cross section in which the effective dimensions L _{1 and} L ₂ are different by a / 2. Formed on the back side 2 of the corner member 1.
A, 2A is a fiber-reinforced cement manufactured corner members 1 which stepped engagement step portions 3, 3 is provided extending, as shown in FIG. 2, the effective dimension L ₃ is a multiple of a A plurality (in the illustrated example, six types) of plate-like bodies 4A to 4F, with ridges 5, 5 formed on at least the edge back surface, and a stair that fits with the corner member 1 on one end side. Engagement step 6
A first fiber-reinforced cement plate member 4 provided with a stepped engaging step 6 symmetrical to the engaging step 6 on the other end side, as shown in FIG. , The effective dimension L ₄ is a multiple of a, and the first fiber-reinforced cement plate member 4
Has an engaging step 7 for engaging with the engaging step 6 at one end, and has an engaging step 8 which is point-symmetric with the engaging step at the other end, and a ridge 9 on the back surface. 9 is formed of a combination of the second fiber-reinforced cement plate-like members 10 on which the members 9 are formed.

In the above embodiment, the basic module refers to a dimension used as a reference when arranging columns or beams. For example, when the pitch of the basic module is set to 50 mm, as shown in FIG. Is 50 mm pitch and A = 500 mm to 1000 mm. In the case of the beam Q, as shown in FIG. 5, the beam width B and the beam configuration C are set to the above values. Therefore, the effective dimension L ₁ L ₂ of the corner member 1 of the present invention is L ₁ = 50 m when the pitch a of the basic module is 50 mm of the previous example.
m, L ₂ = 75 mm, etc. Similarly, the effective dimension L ₃ of the first fiber-reinforced cement plate-like member 4 is 200 mm, 250 mm, 30 mm.
0mm, 350mm, 400mm, effective dimension L ₄ of 450mm and a second fiber-reinforced cement made plate-shaped member 9 are like 300 mm.

Also, in the above embodiment, the shape of the ridges 2, 5, and 9 on the back surface has been described as a ridge forming a dovetail-shaped groove, but is a ridge forming a groove having parallel side surfaces. There may be. If the corner member 1, the first plate member 4 made of fiber-reinforced cement and the second plate member 10 made of fiber-reinforced cement are provided with the hollow holes 11 as shown in the figure, the weight can be reduced by that amount, which is convenient. good. In addition, the hollow hole 11 is not always necessary and may be solid. The permanent form for concrete work in the above embodiment is formed by extrusion molding or casting.

[0011]

The permanent formwork for concrete work of the present invention forms a formwork by connecting the engaging steps to each other to form a formwork as shown in FIG. Since the engaging step portions 6 of the fiber-reinforced cement plate member 4 are symmetrical, the engaging step portions 7 and 8 of the second fiber-reinforced cement plate member 11 are point-symmetrical. By combining the first fiber-reinforced cement plate-like member 4 and the second fiber-reinforced cement plate-like member 11, each engaging step can always be engaged in the forward direction. At this time, the effective dimension L ₁ L ₂ L ₃ L ₄ of each member is the pitch a of the basic module.
Is a multiple of a / 2 or a multiple of a. Therefore, by arbitrarily selecting these combinations, the column P or the beam Q
The joining portion can always be made to coincide with the portion. In the case of the embodiment, since there are two kinds of L-shaped corner members, the pillar P
By starting either a or a / 2 according to the thickness of the first and second and first and second plate-like members 4 and 10 in combination, it is possible to configure the length as shown in the following table. If the basic module has a pitch of 50 mm, it can be used for all columns and beams.

[0012] Hashiramotozai combination A L ₂ L of become combination beam combination beam width of _{3 L 4 B L 1 L 3} L 4 C L 1 L 3 L 4 500 → 75 + 350 300 → 50 + 200 500 → 50 + 450 550 → 75 + 400 350 → 50 + 250 550 → 50 + 200 +300 600 → 75 + 450 400 → 50 + 300 600 → 50 + 250 +300 650 → 75 + 200 +300 450 → 50 + 350 650 → 50 + 300 +300 700 → 75 + 250 +300 500 → 50 + 400 700 → 50 + 350 +300 750 → 75 + 300 +300 550 → 50 + 450 750 → 50 + 400 → 75 + 350 +300 600 → 50 + 200 +300 800 → 50 + 450 +300 850 → 75 + 400 +300 850 → 50 + 200 +300 900 → 75 + 450 +300 900 → 50 + 250 +300 950 → 75 + 200 +300 950 → 50 + 300 +300 1000 → 75 + 250 +300 1000 → 50 + 350 +300 (The unit of the number is mm)

[Combination of Column Base, Beam Width, and Beam Composition] In the above description, the left side of the column of “combination of column base” is the length A of one side in the square cross section of the column P as shown in FIG. The left side of the column of “combination of beam width” indicates the beam width dimension B,
The left side of the column "combination of beams" indicates the length C of the beam. The first item on the right side of each column is the effective dimension L ₁ of the corner member ₁ , L ₂ The second item is the effective dimension L of the first plate member 4
_3, the third item represents the effective dimension L ₄ of the second plate-shaped member 9.

Then, the permanent form 1 for each concrete work
Are joined at the engaging step, so that concrete can be reliably prevented from flowing out from the joint. Furthermore, after the concrete is poured, concrete flows into and hardens between the ridges 2, 5, and 9 on the back surface of the permanent form for concrete work, so that the concrete is strongly integrated. If the permanent form 1 for concrete work shown in FIGS. 2 and 3 is fixed upright with the back surface facing each other with a parallel space therebetween, a form of a flat wall can be constructed.

[0015]

As described above, according to the present invention, the permanent form 1 for concrete work can be easily assembled without cutting by using any combination, and the combination with the flat form can be achieved. It is possible to form a wall of an arbitrary width, and the versatility is wide. Furthermore, if a decorative finish surface as a wall surface is provided on the surface of the permanent form for concrete work, subsequent makeup work can be omitted, which has the effect of shortening the construction period. In addition, it has various effects such as contributing to the protection of nature, because it does not use any natural wood.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a sectional view of a first fiber-reinforced cement plate member.

FIG. 3 is a sectional view of a second plate member made of fiber-reinforced cement.

FIG. 4 is a sectional view showing a use state of the embodiment.

FIG. 5 is a sectional view showing a use state of the embodiment.

[Explanation of symbols]

a ... pitch L ₁ L ₂ L ₃ L ₄ ... effective size 1 ... corner member 2 ... ridge 2A ... backside 3 ... stepped engagement step 4 ... first fiber reinforced cement made plate-like member of the basic module 5 ... Protrusion 6 ... Step-shaped engagement step 7 ... Engagement step 8 ... Engagement step which is point-symmetric with engagement step 7 9 ... Protrusion 10 ... Second fiber-reinforced cement plate Element

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI E04B 2/86 611A 601N

Claims (1)

(57) [Claims] (1) When the pitch of the basic modules of pillars and beams serving as wall base materials is a, the effective dimension L ₁ L ₂ is a multiple of a / 2, and the effective dimension L ₁ L ₂ is a. / 2 different corner members 1 having an L-shaped cross section, wherein at least the ridges 2 and 2 are formed on the back surfaces of both ends of the corner member 1, and the ridges 2 and 2 Back side 2 of corner member 1
A, 2A is extended to stepped fiber engagement step portions 3, 3 are provided reinforced cement manufactured corner members 1 (b) effective size L ₃ is a plate-like body of a plurality of kinds that are a multiple of a 4, at least on the back side of the edge thereof, ridges 5, 5 are formed, and at one end side, a step-shaped engagement step portion 6 that fits with the corner member 1 is provided, and at the other end side. Is a first fiber-reinforced cement plate member 4 provided with a stepwise engagement step 6 which is symmetrical to the engagement step 6 (c) A plate whose effective dimension L ₄ is a multiple of a Shape member 4 having, at one end, an engagement step 7 that engages with the engagement step 6 of the first fiber-reinforced cement plate member 4, and the other end has the same point as the engagement step. A second fiber-reinforced cement plate member 9 having a symmetrical engagement stepped portion 7A and having ridges 8 and 8 formed on the back surface 9 A combination of the above (A), (B) and (C) A permanent formwork for concrete work, comprising: