JP2004183466A - Method for constructing concrete wall surface and frame member used for the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for constructing a concrete wall surface by which forms are installed easily, which can be carried out simply even by an operator having no special technique because a frame member having sufficient durability in spite of light weight is used and by which excellent economical and technical effects can also be expected. <P>SOLUTION: The frame member 1 is used for constituting form units 9 used for the construction work of the concrete wall surface, and has a plurality of engaging sections 4 inside an outer frame formed in a rectangular shape and a connecting means (engaging holes 5) for connecting and fixing the frame member 1 to the other adjacent frame member 1 are mounted on the engaging sections 4. The outer frame is formed by mutually welding ends of long-sized angle materials 2a and 2b and short-sized angle materials 2c and 2d formed in L-shaped cross sections and made of steel. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for constructing a concrete wall surface using a form material such as a styrofoam, and a frame member and a form material used in the method, and in particular, despite being light enough to be carried by human power. TECHNICAL FIELD The present invention relates to a frame member, a form material, and a method of constructing a concrete wall surface using the same, which have sufficient durability and can simplify installation work of the form.
[0002]
[Prior art]
2. Description of the Related Art Styrofoam has been widely used as a formwork material in the construction work for constructing a wall surface of a structure by placing concrete in an erect formwork. FIG. 7 is an explanatory diagram of a general construction method of a structure wall using the styrofoam 51.
[0003]
As shown in this figure, when the styrofoam 51 is used when constructing the structure wall, first, "pipe erection work" necessary to hold the styroform 51 as a formwork is performed. .
[0004]
When a pipe is to be erected, first, a plurality of vertical pipes 52 are erected vertically at predetermined intervals, and the styroforms 51 are arranged along the inner surfaces of the vertical pipes 52. A plurality of (for example, twelve for each pair of opposed styroforms 51, 51) separators 53 are disposed between the opposed styroforms 51, 51 so as to penetrate the interior of each, and both ends thereof are provided. 53a is fastened by a home tie 55 straddling between a pair of horizontal pipes 54,54. The horizontal pipe 54 is held on the outer surface of the vertical pipe 52 by the fastening force of the home tie 55 for fastening the end 53a of the separator 53.
[0005]
When the pipe laying operation and the installation of the styroform 51 are completed, ready-mixed concrete is poured into the space between the opposing styroforms 51, 51. At this time, a part of the separator 53 is buried in the ready-mixed concrete. After placing the fresh concrete, the concrete is compacted using a vibrator or the like. Thereafter, when the concrete hardens after a predetermined curing period, the vertical pipe 52, the horizontal pipe 54, and the styroform 51 are removed (demolding).
[0006]
When removing the mold, first, the home tie 55 holding both ends of the separator 53 is removed, and the horizontal pipe 54, the vertical pipe 52, and the styroform 51 are sequentially removed.
[0007]
When the styrofoam 51 and the like are removed by demolding, a wall formed by hardened concrete appears. However, many separators 53 are buried inside the wall, and both ends of the separator 53 are separated. Since many of the separators 53 protrude outward from the concrete wall surface, both ends of the protruding separator 53 are cut and removed. Finally, in order to prevent water leakage, a mortar is provided near the cut surface of the separator 53 to perform a caulking process.
[0008]
[Problems to be solved by the invention]
The conventional construction method using the styrofoam 51 as shown in FIG. 7 has a problem that it takes time to install the styroform 51. In addition, since the construction work of pipes requires specialized skills, general construction contractors often request only specialized pipe construction work from a series of work. In such a case, there is an economical problem that the construction cost is increased, and when the work schedule is not appropriate, there is also a problem that the construction period is postponed.
[0009]
The present invention was created in order to solve such a conventional technique, and is intended to use a frame member which is easy to install a formwork and has sufficient durability despite being lightweight. A method of constructing a concrete wall surface that can be easily constructed even by persons without special skills and can be expected to have excellent effects economically and technically, and a frame for realizing the method. An object is to provide a member.
[0010]
[Means for Solving the Problems]
The frame member according to the present invention is for forming a form unit used in construction work of a concrete wall surface, and is inside a rectangular outer frame, and is orthogonal to the longitudinal direction of the outer frame. It is characterized in that it has a plurality of locking portions extending in the direction, and the locking portion has a connecting means for connecting and fixing with another adjacent frame member. Preferably, the outer frame is formed by welding ends of a long angle material and a short angle material made of steel having an L-shaped cross section.
[0011]
It is preferable that the frame member according to the present invention be provided with a corner frame member in addition to the one for constructing a straight concrete wall surface. As a corner frame member, an L-shaped L-shaped member extending in a direction orthogonal to the longitudinal direction of the outer frame is provided inside an outer frame formed so that two rectangular planes surrounded by the frame are orthogonal to each other. It is possible to use one having a plurality of locking portions, and having a connecting means for connecting and fixing the locking portion to another adjacent frame member.
[0012]
Furthermore, the method for constructing a concrete wall surface according to the present invention is characterized in that a plurality of form units having the above-mentioned frame members attached to one surface of a form material such as a styrofoam are prepared, and one form unit is self-standing. After that, other formwork units are arranged side by side, and these adjacent formwork units are connected and fixed using the connecting means. At the spaced position, another form unit is set up so as to face the form unit, and these facing form units are inserted into the tube while penetrating the inside of the form material. The tie rods are connected and fixed, and ready-mixed concrete is poured into a space formed between these formwork units, which is cured and hardened.
[0013]
Furthermore, the formwork material according to the present invention has a large number of recesses for inserting clamps for connecting and fixing the formwork materials arranged adjacent to each other, and they are arranged in a longitudinal direction. Features.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a frame member 1 according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA. As is apparent from these figures, the frame member 1 is basically composed of a steel angle member 2 (long angle members 2a and 2b and short angle members 2c and 2d) having an L-shaped cross section and a flat plate shape. And four locking portions 4 (4a to 4d) formed by the steel plate members 3 (3a to 3h).
[0015]
More specifically, the frame member 1 includes a plurality of plate members 3 (inside a rectangular outer frame formed by welding the ends of the long angle members 2 a and 2 b and the short angle members 2 c and 2 d to each other. 3a to 3h) are attached in a direction perpendicular to the long angle members 2a and 2b (that is, a direction perpendicular to the longitudinal direction of the outer frame). As a result, four engaging members 4 (4a to 4d) formed of two adjacent plate members 3 are stretched between the long angle members 2a and 2b.
[0016]
The plate member 3 is attached to the long angle members 2a and 2b in such a direction that the plate member 3 is horizontal when the frame member 1 is set up (as shown in FIG. 1). As shown in FIG. 2, the plate member 3 is attached so that a part thereof protrudes outward from the angle member 2, and a plurality of locking holes 5 ( Connection means) is provided.
[0017]
Further, a backing material 6 for reinforcement is attached to the back side of the locking portion 4 in a direction orthogonal to the plate material 3, and furthermore, between the two plate materials 3 constituting one set of the locking portion 4. Are formed with reinforcing ribs 7 in a direction orthogonal to the plate member 3 and the backing member 6, respectively.
[0018]
The dimensions of the frame member 1 can be appropriately set according to the size of the form material to be used, but the height dimension is set within a range of 90 to 100% of the height dimension of the form material. Preferably, the width is set within a range of 60 to 70% of the width of the frame material. If the width dimension is less than 60% of the form material, it is difficult to hold the form material against the load of the ready-mixed concrete at the time of placing the ready-mixed concrete. %, The problem is that it is inconvenient to carry around due to an increase in weight.
[0019]
For this reason, for example, in the case of the frame member 1 used by being attached to a mold material having a height of 2300 mm and a width of 910 mm, the height dimension is preferably set within a range of 2070 to 2300 mm. The dimensions are preferably set within the range of 546 to 637 mm.
[0020]
Here, a description will be given of a method of using the frame member 1 according to the present embodiment and a method of constructing a wall surface of a structure using the frame member 1 and a form material (“styroform” in the present embodiment). I do. First, as shown in FIG. 3, one frame member 1 is attached to one surface of one styroform 8 to form a mold unit 9. The attachment of the frame member 1 to the styroform 8 is performed by driving a screw and / or a nail into the styroform 8 from the attachment through hole 17 formed in the frame member 1.
[0021]
As shown in FIG. 3, on one surface of the styroform 8, a large number of rectangular recesses 8a (8 rows × 4 steps, 32 in total) are formed. These recesses 8a are arranged in the horizontal and vertical directions. Further, in the present embodiment, the depth dimension of these recesses 8a is set to half the thickness dimension of the styroform 8.
[0022]
Next, the form unit 9 is erected on the floor surface so that the fixing through holes 10, 10 of the frame member 1 are aligned with the fixing holes provided on the floor surface in advance. Then, bolts are inserted into the fixing through-holes 10 and the fixing holes on the floor surface and tightened, and the form unit 9 is allowed to stand on the floor surface.
[0023]
Another form unit 9 ′ is erected and arranged adjacent to the form unit 9, which is self-standing on the floor, and a connection bar 11 having a plurality of connection through holes 12 is positioned at the same height. It is inserted between the stoppers 4 and 4 ′, and the connecting through-hole 12 of the connecting bar 11 is aligned with the locking hole 5 of the locking part 4 and the locking hole 5 ′ of the locking part 4 ′, and the wedge 13 Is inserted into these, thereby connecting and fixing the form unit 9 and the form unit 9 'adjacent thereto.
[0024]
Further, the adjacent styroforms 8 are connected to each other using a clamp 20, as shown in FIG. More specifically, the clamp 20 is inserted into a concave portion 8a formed in the styroform 8, straddled over two adjacent styroforms 8, and tightened by rotating a handle to tightly connect the styroforms 8 to each other. Connect to The connection between the styroforms 8 by the clamps 20 is in a relationship to reinforce the connection between the form units 9 by the connection bars 11 and the wedges 13.
[0025]
In this way, a number of form units 9 are sequentially arranged side by side, and they are connected and fixed to each other by using the connecting bar 11, the wedge 13, and the clamp 20.
[0026]
Then, as shown in FIG. 4, the styroforms 8, 8 ″ face each other to another form unit 9 ″ at a predetermined distance from one form unit 9, which is self-standing on the floor surface. Stand in such a direction. The dimension L of the space secured between the two formwork units 9 and 9 "is set according to the thickness dimension of the wall to be constructed.
[0027]
Next, the styrofoams 8 and 8 ″ are passed through and the insides of the locking portions 4 formed in the respective frame members 1 (between the plate members 3a and 3b in FIG. 4) are passed. Then, tie rods 14 having a diameter of about 20 mm are attached, and counter plates 15, 15 are attached to both ends of the tie rods 14, respectively, so that the space between the opposing form units 9, 9 "is not widened.
[0028]
As shown in the figure, the tie rod 14 is inserted into the tube 16 between the opposed form units 9, 9 ". The tube 16 has a total length between the form units 9, 9". Is set so as to be substantially equal to the dimension L of the interval secured in the above, so that the interval between the opposing mold units 9 and 9 "can be prevented from being narrowed.
[0029]
Also, flared cone portions 16a, 16a are formed at both ends of the tube 16. In the present embodiment, the tube 16 is configured such that the cone portion 16a is configured to be detachable from the main body. However, a tube in which the cone portion 16a is integrally molded with the main body may be used. it can. Further, as shown, between the styroforms 8, 8 "and the cone portions 16a, 16a of the tube 16, holding plates 19, 19 are arranged, respectively, and the cone portions 16a, 16a of the tube 16 are attached to the styroform. It is possible to avoid a situation where the user cuts into 8,8 ".
[0030]
As shown in FIG. 3, in the present embodiment, four pairs (the same number as the locking portions 4 formed for one frame member 1) of the pair of form units 9, 9 ″ facing each other. These tie rods 14 are functionally equivalent to the separator 53 in a conventional general construction method (see FIG. 7), but the number of tie rods used is Whereas the number of the separators 53 is 12 for one styrofoam, when tie rods 14 are used, four for each styroform 8 are sufficient.
[0031]
In this manner, the operation of connecting and fixing the adjacent form units 9 using the connection bar 11 and the wedge 13 and the operation of connecting the opposing form units 9 using the tie rods 14, the counter plate 15, and the tube 16. When the fixing operation is completed, ready-mixed concrete is poured into the space formed between the facing form units 9. At this time, the intermediate portion of the tie rod 14 and the tube 16 are buried in the ready-mixed concrete 18 as shown in FIG.
[0032]
When a large amount of ready-mixed concrete is poured into a space formed between the facing form units 9, a force is applied to each form unit 9 such that the form unit is pushed outward by the load of the ready-mixed concrete. However, in the present embodiment, as described above, the facing form units 9 are firmly connected to each other by the tie rods 14, so that they can withstand the load of the poured ready-mixed concrete, and the relative positions of both form units 9 The relationship (interval) will be maintained.
[0033]
After placing the fresh concrete, the concrete is compacted using a vibrator or the like. Thereafter, when the concrete hardens after a predetermined curing period, the mold unit 9 is released.
[0034]
To remove the form unit 9, first, the counter plates 15 attached to both ends of the tie rod 14 are removed, and the tie rod 14 is pulled out from the styroform 8 and the concrete, so that the opposing form units 9, 9 "( The connection between the adjacent form units 9 and 9 '(see FIG. 3) is released by releasing the connection between the adjacent formwork units 9 and 9' (see FIG. 3). Do it.
[0035]
When removing the mold, only one (outside, that is, the mold unit 9 (or 9 ″) located outside) of the opposing mold units 9, 9 ″ is removed, and the other (inside, that is, 9 ″). For the formwork unit 9 "(or 9) located on the indoor side, only the frame member 1 is removed, and for the inner styroform 8" (or 8), it remains attached to the hardened concrete. Let it. In this case, the remaining styrofoam 8 ″ (or 8) can be used as a heat insulating material in the room, and thereafter, a “sticking operation of the heat insulating material” to be performed as a part of the interior construction work is performed. Can be omitted. However, both of the opposing form units 9 and 9 "may be removed.
[0036]
In the present embodiment, the protective film is adhered to at least one surface (the surface in contact with the concrete wall surface) of the outer styroform 8 (or 8 ″) removed by demolding. Is formed, improving the releasability, facilitating demolding work, and preventing the styrofoam surface from deteriorating, improving durability and reusing it as many times as possible. )can do.
[0037]
When the outer form unit 9 (or 9 ″) is removed by demolding, a wall surface formed of hardened concrete appears, and a number of tubes 16 are buried inside the wall surface, Since the inside is hollow, a process (caulking process) for preventing water leakage is performed as a final finish.
[0038]
The caulking process is performed by first removing the cone portions 16a, 16a from the main body of the tube 16, and injecting a mortar or a caulking agent into the remaining conical cavity.
[0039]
As described above, if the frame member 1 according to the present embodiment or the form unit 9 (a unit configured by attaching the frame member 1 to one surface of the styroform 8) is used, only a simple operation is required. It is very easy to construct a concrete wall.
[0040]
The width of the form unit 9 can be adjusted by cutting the styroform 8 in the vertical direction. Therefore, it is possible to construct a concrete wall of a desired size with only one type of styroform 8 without preparing a plurality of types of styroforms 8 having different width dimensions. As described above, the styrofoam 8 used in the present embodiment is provided with a large number of recesses 8a, which are arranged in the vertical direction. Can be easily cut by cutting along the inner side surface of the groove, that is, by using the concave portions 8a as guides. Therefore, it is possible to easily cope with the situation even on site.
[0041]
In the present embodiment, an example of a method of constructing a linear concrete wall surface by using the frame member 1 as shown in FIGS. 1 to 4 has been described. By devising the connection and fixing method, it is possible to construct a right-angled, T-shaped, or cross-shaped concrete wall.
[0042]
However, when a corner frame member 21 as shown in FIGS. 5 and 6 is prepared in addition to the frame member 1 as shown in FIG. 1 or the like, a right-angled, T-shaped, or cross-shaped concrete is used. Wall surfaces can be more easily constructed.
[0043]
More specifically, the corner frame member 21 is formed by welding the ends of three long angle members 2a, 2b, 2e and four short angle members 2c, 2d, 2f, 2g. An outer frame is formed such that two rectangular planes surrounded by the rectangular shape are orthogonal to each other, and an L-shaped locking portion extending in a direction orthogonal to the longitudinal direction of the outer frame is formed inside the outer frame. 4 are attached, and the valley surface of a styroform molded to have an L-shaped cross section (or a composite styroform formed by combining two styroforms to form an L-shaped cross section) By using it, it is possible to easily construct a right-angled concrete wall or the like.
[0044]
【The invention's effect】
As described above, the use of the frame member according to the present invention makes it possible to simplify the installation work of the formwork as compared with the conventional method, and furthermore, does not have special technical skills. However, it is easy to construct a concrete wall.
[0045]
In addition, the frame member according to the present invention has sufficient strength in spite of its light weight, and has advantages that storage and transportation are easy.
[0046]
Furthermore, when the mold material (styrofoam) on one side is left as it is stuck to the hardened concrete wall surface during demolding, it is used as a heat insulating material with an excellent heat insulating effect. Therefore, it is possible to expect an effect that the operation of attaching the heat insulating material, which is a part of the interior construction work, can be omitted.
[0047]
Also, the formwork material, frame member, or formwork unit that has been peeled off from the concrete wall surface during removal from the mold can be diverted to other works. In addition, when a protective film is formed, for example, a protective film is adhered to one surface (the surface in contact with concrete) of the form material to be removed at the time of demolding, the peelability is improved, In addition to facilitating the removal of the mold, the deterioration of the surface of the mold material can be prevented, so that the durability is improved and the material can be used (reused) as many times as necessary.
[0048]
Furthermore, when a large number of rectangular recesses are formed on the surface of a styrofoam used as a form material, the connection between the adjacent styrofoams can be reinforced by inserting clamps therein. In addition, when the recesses are formed so as to be aligned in the vertical direction on the surface of the styrofoam, they can be used as guides for cutting.
[Brief description of the drawings]
FIG. 1 is a front view of a frame member 1 according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of the frame member 1 of FIG. 1 taken along line AA.
FIG. 3 is an explanatory view of a method of using the frame member 1 of FIG.
FIG. 4 is a sectional view showing a method of using the frame member 1 of FIG. 1;
FIG. 5 is a front view of a corner frame member 21 that can be used in the present invention.
FIG. 6 is a cross-sectional view of the frame member 21 of FIG. 5 taken along line BB.
FIG. 7 is an explanatory diagram of a general construction method of a conventional structure wall surface.
[Explanation of symbols]
1, 21: frame member,
2: Angle lumber,
2a, 2b, 2e: long angle material,
2c, 2d, 2f, 2g: short angle material,
3, 3a to 3h: plate material,
4, 4a to 4d, 4 ': locking portion,
5, 5 ': locking hole,
6: Backing material,
7: rib,
8, 8 ", 51: Styrofoam,
8a: concave portion,
9, 9 ', 9 ": formwork unit,
10: through hole for fixing,
11: connecting bar,
12: Through hole for connection,
13: Wedge,
14: Tie rod,
15: counter plate,
16: tube,
16a: cone part,
17: mounting through hole,
18: ready-mixed concrete,
19: Holding plate,
20: clamp,
52: vertical pipe,
53: separator,
53a: end,
54: Horizontal pipe,
55: Home Thailand

Claims (5)

A frame member for forming a form unit used in the construction work of the concrete wall,
Inside the outer frame formed in a rectangular shape, there are a plurality of locking portions extending in a direction orthogonal to the longitudinal direction of the outer frame,
A frame member having a connection means for connecting and fixing the locking portion to another adjacent frame member. A frame member for forming a form unit used in the construction work of the concrete wall,
Inside the outer frame formed so that two rectangular planes surrounded by the frame are orthogonal to each other, a plurality of L-shaped locking portions extending in a direction orthogonal to the longitudinal direction of the outer frame are provided, A frame member having a connection means for connecting and fixing the locking portion to another adjacent frame member. 3. The outer frame according to claim 1, wherein the outer frame is formed by welding ends of a steel long-angle material and a short-angle material having an L-shaped cross section. 4. Frame members. A method for constructing a concrete wall surface using the frame member according to claim 1 and / or the frame member according to claim 2.
A plurality of form units each having the form member attached to one surface of the form material are prepared, and after one form unit is self-standing, another form unit is arranged adjacent to the form unit, Formwork units to be connected and fixed using the connecting means,
In addition, another form unit is set up at a predetermined distance from one self-supported form unit so as to face the form unit, and these opposing form units are separated from each other by their molds. Connected and fixed by tie rods penetrating through the frame material and inserted into the tube,
A method for constructing a concrete wall, characterized by placing ready-mixed concrete in a space formed between these formwork units, curing and curing the mixture. A large number of recesses are formed for inserting clamps for connecting and fixing form materials arranged adjacent to each other,
A mold material, wherein the concave portions are arranged in a longitudinal direction.

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