JPH11124934A - Fixing structure of mesh form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locked structure of mesh forms, by which a frame structure consisting of the mesh forms for concrete placement can be constructed easily and efficiently and the rigidity of the frame structure is enhanced to prevent swelling out of the mesh forms due to concrete pressure. SOLUTION: Mesh forms 3 are fitted over mounting rods 5, are clamped into place by clamps 6, and are reinforced and supported by vertical rods 7 and horizontal rods 8 to construct a frame structure 1. In that case, each vertical rod 7 is formed by providing an contact surface 70 which makes contact with the mesh frame 3 over a wide area and by providing the contact surface 70 with a mounting hole 71 through which the mounting rod 5 can pass. With the mesh forms 3 and the vertical rods 7 fitted around the mounting rods 5, the mesh forms 3 and the vertical rods 7 are clamped into place by the clamps 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a mesh formwork to be poured into concrete such as an underground beam or various retaining walls.

[0002]

2. Description of the Related Art In recent years, plywood formwork (plywood formwork) consumes a large amount of wood, and thus has the problem of forest resources.
Since there is an environmental problem due to harmful gas such as dioxin generated when incinerating a used plywood form, a mesh form manufactured by lath processing a thin iron plate has been frequently used. 2. Description of the Related Art Conventionally, a frame structure installed for placing concrete underground beams or various retaining walls using this mesh form has a fixed structure as shown in FIG.

The frame structure 1 shown in FIG. 1 includes a threaded portion 50 at both ends of a mounting rod (separator) 5 supported by a reinforcing bar (a stap bar or the like) via a mounting piece (separ clip) 10.
When the mesh form 3 is inserted and fastened with a fixing tool (form tie (registered trademark)) 6, when the standard-sized mesh form 3 is continuously formed in the horizontal direction, a vertical rod is used. The two round pipes that become horizontal rods are erected at intervals of about 250 to 300 millimeters at intervals of about 250 to 300 millimeters, and laid over a plurality of adjacent round pipes 7 that are erected. Pipe 8
And a pair of round pipes 8, 8 are inserted into the mounting holes of the fixing tool 6 by inserting a pair of round pipes 8 from the outside into the mounting holes of the fixing tool 6. The round pipe 7 is fixed to the mesh form 3 through the intermediary.

[0004]

However, in the above-mentioned conventional structure for fixing a mesh form, since the vertical rod is a round pipe, the mesh form 3 is pressed in line contact in the vertical direction. Therefore, when concrete is poured into the frame structure 1, the mesh form is easily swelled and deformed between adjacent vertical bars due to the filled concrete pressure. To prevent this, the vertical bar interval is reduced. There are drawbacks such as a large number of round pipes 7 to be erected.

Further, since the round pipe 7 is abutted and fixed by the crow fitting 9 via two round pipes separately from the mounting and fixing of the mesh form 3, the work of mounting and fixing the round pipe 7 and the round pipe There is a problem in that the horizontal work of 8, 8 is complicated. Furthermore, as for the round pipes 7 supporting the mesh forms 3 having different sizes and shapes for each construction of the framework structure 1, 20 or more kinds of round pipes 7 having different lengths are required, and a round pipe of a horizontal rod is required. 8 also requires a large number of assembling parts, resulting in high costs and inability to increase the work efficiency. In addition, the round pipes 7 and 8 are liable to stick to the round pipes 7 and 8 due to leaking concrete or the like during casting. There is a problem that the removal operation when solidified is extremely difficult.

[0006]

To solve the above-mentioned conventional problems, the fixing structure of the mesh form according to the present invention is as follows. First, the mesh form 3 is inserted into the mounting rod 5 and the fixing tool 6 is used. In the frame structure 1 in which the mesh form 3 is fixedly supported and the mesh form 3 is reinforced and supported by the vertical rods 7 and the horizontal rods 8,
Is formed by providing a contact surface 70 that contacts the mesh form 3 in a wide range and a mounting hole 71 through which the mounting rod 5 can be inserted, and the mesh form 3 and the vertical rod 7 are inserted through the mounting rod 5. It is characterized in that both are clamped and fixed by the fixture 6 in the state in which they are made.

Second, the vertical rod 7 is formed by a contact surface 70 having a mounting hole 71 and a support surface 72 which is integrally erected on one side of the contact surface 70. .

Third, a plurality of vertical rods 7 erected along the mesh form 3 are connected and supported by horizontal rods 8 placed on a fixture 6.

Fourth, the horizontal rod 8 for connecting and supporting the vertical rod 7 is formed of wood.

Fifth, a protection member 73 for preventing sticking of the stick is detachably attached to the lower end of the vertical rod 7.

[0011]

An embodiment of the present invention will be described with reference to the drawings. 1 to 3, reference numeral 1 denotes an example of a framework structure for an underground beam formed with the fixing structure according to the present invention, and the framework structure 1 is constructed by using a stecon or the like on a bottom grooved in the ground. Base 2 that becomes the floor for the foundation
A reinforcing bar (medium rebar) 2a provided via a spacer 20 is provided thereon with the following fixing structure, and an underground beam is formed by casting concrete into the framework structure 1. .

In the illustrated example, the frame structure 1 has a mesh form 3 having standard specifications (having a size of about 600 mm in length, 2000 mm in width and about 0.5 mm in thickness), and the mesh form 3. A mounting rod (separator) 5 and a fixing tool (form tie) 6 for mounting and holding and fixing the mesh form 3, and a vertical rod 7 having a configuration described later for holding and fixing the mesh form 3 while being held and fixed together with the mesh form 3. A horizontal rod 8 for laterally passing the mesh frame 3 erected in the horizontal direction, and a mounting member 9 for mounting and fixing the horizontal rod 8 to the mounting rod 5 side are assembled. I have. Reference numeral 10 denotes a conventionally known mounting piece (separ clip) made of a spring material for mounting and supporting the mounting rod 5 in an appropriate number of places on the reinforcing bar 2a. Reference numeral 11 denotes a support beam that extends between the horizontal rod 8 and the ground to prevent the frame structure 1 from falling down.

Next, with reference to FIG. 3, a detailed configuration of each of the above structural members of the framework structure 1 and a construction procedure will be described.
The mesh form 3 has a suitable number of ribs 30 protruding in the lateral direction of a thin iron plate having a thickness of about 0.5 mm and a mesh (predetermined length) formed by lathing on the entire surface between the ribs 30. 17
(Approximately 12 mm in width and 12 mm in width) 31 are formed, and the frame structure 1 is configured with the ribs 30 being on the inside during construction.

The mounting rod 5 has a threaded portion 50 for screwing the fixture 6 at both ends of the round bar, and has a width interval of the frame structure 1 inside the threaded portion 50 so that the mesh form 3 is formed. Mesh 3
The flanges 51, 51 having a diameter larger than 1 are fixed. Fixture 6
Has a flange 60 projecting from a screw end portion of the mounting rod 5 which is screwed with the screw portion 50, and a plurality of mounting holes 61 capable of inserting and fixing the mounting tool 9 in the axial direction. ing. The attachment 9 is made of a crow fitting including a wedge piece 90 and a receiving plate 91 as shown in FIG.
The above two examples are used appropriately. Note that any of the above structural members can be conventionally commercially available ones.

On the other hand, the vertical rod 7 can be obtained by cutting an angle member having an L-shaped cross section into a predetermined length instead of the conventional round pipe, and comes into contact with the mesh form 3. A long hole-shaped mounting hole 71 through which the mounting rod 5 can be inserted is formed in the wide contact surface 70 at a predetermined interval. That is, the length of the vertical rod 7 in the illustrated example is set to about 700 mm, and the length of the vertical
A mounting hole 71 having a length of about millimeters is formed, and similar mounting holes 71 and 71 are formed at equidistant positions on both sides of the mounting hole 71. A reinforcing surface 72 is provided on one side of the contact surface 70. The vertical rods 7 are erected integrally in a right angle so as to have sufficient rigidity.

According to this, the vertical rod 7 can be freely attached to the mesh forms 3 having different vertical lengths by using the respective mounting holes 71. It is possible to adjust the extension by overlapping a plurality of vertical rods 7 while increasing the commonality. For example, there is no need to prepare 25 or more types of vertical rods as in the conventional frame structure with round pipes.
There are advantages such as the number of types can be greatly reduced to about 6 to 9 types.

Further, since the vertical rods 7 having an L-shaped cross section can be reduced in weight and the vertical rods 7 adjacent to each other can be overlapped with each other, a large number of vertical rods 7 can be formed into a small bundle and compact. It can be easily transported in a package, and can be satisfactorily carried out without occupying a large storage space unlike the conventional one. In addition, since the vertical rod 7 having the above-mentioned shape has the open surface with the contact surface 70 and the support surface 72 being flat surfaces, even if the slag adheres, the removal can be performed very easily as compared with the round pipe. Since the contact surface 70 is in planar contact with the mesh form 3, there is an advantage that the sticking and solidification of the sticking to the contact surface 70 are favorably prevented.

The vertical rod 7 has a protective member 73 having a shape shown in FIG. 3 detachably attached to a lower end portion thereof which is in contact with the ground, so that leaked concrete (slag) can be attached and solidified at the time of casting. So that it can be prevented. The protection member 73 in the illustrated example has a notch formed in the center of a block body formed of a foamed resin material, into which an end of the reinforcing surface 72 can be inserted. The protection member 73 is inserted and attached to the lower end thereof, and is used upright. When the frame structure 1 is disassembled and the vertical rod 7 is removed after the concrete is cast, the protection member 73 is left on the ground. The vertical rod 7 can be easily pulled upward while tilting outward.

That is, since the protective member 73 having the above-described structure has elasticity and softness peculiar to the foamed resin, the protective member 73 can be quickly inserted into and attached to the vertical rod 7. The work can be easily performed while deforming the protection member 73, and since it is lightweight, it is easy to transport and handle.
There are advantages such as that a plate-like body having a predetermined thickness formed of a foamed resin material can be easily performed by a cutting step.

Further, since no concrete adheres to the lower end of the vertical rod 7 after being pulled out, the labor for removing the adhered concrete is reduced, and a large number of vertical rods 7 can be superimposed immediately after disassembly. This makes it possible to carry out the transportation, storage and the like in a small bundle in a compact package. Note that the protection member 73 is not limited to the above-described one formed of a foamed resin material, and a similar operation may be performed by attaching wood or a film body.

Next, the horizontal rod 8 and the attachment 9 will be described. The horizontal rod 8 in this embodiment is made of a wood rod having a rectangular cross section and substantially the same length as the mesh form 3, so that the mesh form 3 which is erected in the horizontal direction is passed through. The straightness and the frame rigidity of the frame structure 1 are improved. That is, in a state in which the mesh form 3 and the vertical rod 7 are integrally held and fixed by the mounting rod 5 and the fixing tool 6 and stand upright, the horizontal rod 8 is mounted on the fixing tool 6 while being mounted on the fixing tool 9.
Thus, the assembling construction of the frame structure 1 is completed by pressing and fixing the vertical rods 7 to the vertical rods 7. Thereafter, the supporting beams 11 are provided on the horizontal rods 8 which are fixedly mounted, so that reinforcement in the falling direction is performed.

As shown in the drawing, the mounting member 9 for mounting and fixing the horizontal rod 8 is a means for pressing and fixing the horizontal rod 8 by applying a receiving plate 91 to the horizontal rod 8 and pressing the wedge piece 90 into the mounting hole 61 of the fixing tool 6. In addition, a means for pressing and fixing by winding and tightening the number line 92 around the horizontal rod 8 and the fixture 6 or the vertical rod 7 is also appropriately selected. At this time, the horizontal rod 8
Is made of wood, so that when it is fixed to the vertical rod 7 with the mounting fixture 9, its wide contact surface is recessed and deformed.
Is pressed so as to bite into the support surface 72 of the metal pipe, so that it is possible to accurately prevent rattling at the time of tightening and displacement of the adjacent vertical rods 7. , The rigidity of the frame can be improved by accurately connecting and fixing the respective vertical rods 7..., And it is also lightweight, easy to handle and easy to store in a stack. The horizontal rod 8 may use a steel pipe of about 40 mm square.

Next, a procedure and a procedure for constructing the framework structure 1 with the above-described respective constituent members will be described. First, the mounting rod 5 is mounted and fixed laterally at predetermined intervals by the mounting pieces 10 while adjusting the position of the mounting rod 5 in the through-direction of the flange 51 with respect to the vertical and horizontal directions of the reinforcing bars 2 a installed on the base 2. Next, the mesh form 3 is vertically supported by the threaded portions 50 at both ends of each of the fixed mounting rods 5 through the mesh 31, and the vertical rod 7 is supported from the outside thereof through the mounting holes 71. The lower end to which the protective member 73 is attached is grounded.

In this state, when the fixture 6 is screwed into the screw portion 50 and fastened, the mesh form 3 and the vertical
Are firmly sandwiched and fixed between the flange 51 and the flange 60 of the fixture 6 in a superposed state, and are stably erected on both sides of the reinforcing bar 2 a on the base 2, and the next mesh form 3 and The vertical bars 7 are sequentially connected in the same manner, and the reinforcing bars 2a are erected over the entire length. At this time, since the mesh frame 3 and the vertical rod 7 are simultaneously attached and fixed by the fixture 6, the work of the temporary assembling step of the frame structure 1 can be performed extremely easily and with rigidity. Since the frame 3 is stably supported by the wide mounting surface 70 of the vertical rod 7, the following operations can be easily performed.

That is, after the mesh form 3 and the vertical rod 7 are stably and integrally clamped and fixed by the mounting rod 5 and the fixing tool 6,
The horizontal rods 8 can be stably mounted on the adjacent fixtures 6. In this state, when the horizontal rods 8 made of wood are pressed and fixed to the respective vertical rods 7 by the fixtures 9 as described above, The frame structure 1 is positioned firmly and passed through, so that assembly work can be completed efficiently and easily.
After that, the supporting beam 11 is provided on the lateral rod 8 fixed and attached, so that the reinforcement support can be appropriately performed while correcting the passage of the frame structure 1.

Next, after the frame structure 1 using the mesh form is completed as described above, concrete is filled and supplied into the frame structure 1 by using a concrete hose or the like by means of a conventional casting method. After the set concrete is set, the frame structure 1 is dismantled. This disassembly work is completed by removing the support beam 11 and removing the horizontal rod 8 by releasing the fixing of the fixture 9 and loosening and removing the fixture 6 and then removing the vertical rod 7. Out.
In this case, the horizontal rod 8 can be easily removed while one piece of wood is placed on the fixture 6, and the vertical rod 7 has its lower end protected by a protective member 73 to prevent sticking of the stick. Since it is temporarily supported, it can be easily removed by the above-described pulling operation.

In the structure for fixing the mesh form used as described above, when concrete is poured into the frame structure 1, the mesh form 3 tends to expand outward due to the concrete pressure. In a state where the mesh form 3 and the vertical rod 7 are firmly clamped and fixed integrally by the mounting rod 5 and the fixture 6, the vertical rod 7 comes into surface contact with the mesh form 3 on the wide contact surface 70 and is pushed. The mesh form 3
Can maintain the rigidity between the vertical rods 7 and prevent swelling deformation satisfactorily, and can properly form an underground beam having an appropriate and good appearance. is there. In addition, the frame structure 1 can increase the supporting interval between the adjacent vertical bars 7 and 7 by the increased contact area of the vertical bars 7, so that the number of vertical bars 7 to be installed can be reduced. The construction work can be performed simply, efficiently and at low cost.

At this time, since the vertical rod 7 has the elongated mounting hole 71 formed in the contact surface 70, it is easy to adjust the mounting position according to the height of the mesh form 3 to be erected. Therefore, the mesh form 3 can be securely clamped and fixed, and the versatility of the vertical rods 7 can be enhanced to increase the length of different vertical lengths as in the case of a conventional round pipe frame structure. Advantages such as the ability to greatly reduce the types and improve the workability without preparing rods are created.

The vertical rods 7 having an L-shaped cross section can be reduced in weight and can be transported by stacking a large number of vertical rods 7 in a compact package by stacking adjacent vertical rods 7 on each other. This can be easily performed, and the storage and the like can be favorably performed without occupying a large space unlike the conventional one. Therefore, according to the fixing structure of the mesh form according to the present invention, the construction efficiency (work for one person) of the framework structure 1 can be greatly improved to about 23 to 25 square meters, which is approximately double the conventional one. It is.

The vertical rod 7 is not limited to the above-described one, and may be configured as shown in FIGS. 4 to 7. Next, another embodiment will be described with reference to FIG. The vertical rod 7 shown in FIG. 4 shows a contact surface 70 formed with a cutout portion 76 that communicates with the mounting hole 71 from the outside, and according to this, when the mounting hole 71 is inserted into the screw portion 50 of the mounting rod 5. Furthermore, there is an advantage that the vertical rod 7 can be easily inserted and set from the side via the notch 76, and the working efficiency can be further improved. Note that the notch 76 may be formed larger as shown by a dotted line.

The vertical rod 7 shown in FIG. 5 is formed by forming a plurality of vertical projections 77 on the contact surface 70 with a plurality of projections spaced apart from each other, as in the above-described embodiment. The mesh form 3 is configured to be able to abut and support the mesh form 3 in a wide range. According to this, the plurality of projections 77 also serve as reinforcing ribs.
There is an advantage that it can be manufactured to have sufficient rigidity while reducing the weight with a thin material. In addition, since all of the above-mentioned vertical rods 7 are formed in an L-shaped or T-shaped cross-section in which the support surface 72 is integrally formed on one side of the contact surface 70, it is assumed that the stick is attached. Is also very easy to remove.

The vertical rod 7 may have the following structure in addition to the cross section. That is, the vertical rod 7 shown in FIG. 6 shows a configuration in which a mounting hole 71 is formed in the contact surface 70 using a C-shaped channel having a U-shaped cross section, and the vertical rod 7 shown in FIG. Both sides of the wide surface of each pipe having a cross section are shown as contact surfaces 70 in which mounting holes 71 are formed on both sides so as to be used alternatively.

[0033]

Since the present invention is configured as described above, the following effects can be obtained. According to the first aspect of the present invention, the vertical rod having a wide contact surface having a mounting hole through which the mounting rod can be inserted, and the mesh form and the vertical rod being inserted into the mounting rod are held and fixed by the fixture. By doing so, the frame structure can be constructed simply and efficiently, and the mesh form can be stably pressed and supported by the vertical rod being in surface contact with the wide contact surface, so that the mesh form can be vertically adjacent to the mesh form. The rigidity between the rod and the rod can be enhanced, and the outward expansion of the mesh form due to the concrete pressure cast into the frame structure can be favorably prevented.

In the frame structure, the contact area of the vertical rods is increased, so that the interval between adjacent vertical rods can be widened, and the number of vertical rods to be installed can be reduced. Etc. can be performed at a low cost while improving work efficiency. In addition, since the vertical rod has a long hole-shaped mounting hole on the contact surface, the mounting position can be easily adjusted according to the height of the mesh form, and the mesh form can be securely clamped and fixed. In addition to this, the workability can be improved without increasing the commonality of the vertical rods and eliminating the need for vertical rods of various lengths unlike the conventional framed structure using round pipes.

According to the second aspect of the present invention, a vertical rod having a contact surface having a mounting hole and a support surface integrally provided on one side thereof can be reduced in weight, and a plurality of vertical rods can be used. Since they can be overlapped with each other, transportation and work can be performed easily, and storage and the like can be performed well. In addition, there is an advantage that the sticking of the stick to the contact surface can be suppressed and the sticking to the vertical rod can be easily removed on the flat surface.

According to the third aspect of the present invention, the plurality of vertical rods sandwiched and fixed together with the mesh form can accurately pass through the frame structure even with one horizontal rod. Can be easily performed in a state of being mounted on the fixture, so that the work of traversing the frame structure can be easily and efficiently performed.

According to the fourth aspect of the present invention, the horizontal rod is formed of wood so as to connect and support the vertical rod, so that when fixed to the vertical rod with the fixture, its wide contact surface is concavely deformed. The vertical rods are pressed against each other to prevent rattling and misalignment when tightening like conventional metal round pipes, and to accurately connect and fix each vertical rod to improve frame rigidity. be able to.

According to the fifth aspect of the present invention, the protection member is detachably attached to the lower end of the vertical rod, so that the sticking of the lower part of the vertical rod at the time of driving can be prevented, and the frame can be attached. When dismantling the structure, the vertical rod can be easily removed while leaving the protection member on the ground.

[Brief description of the drawings]

FIG. 1 is a side view of a frame structure formed by a mesh mold fixing structure of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is an exploded perspective view showing a main part of FIG. 1;

FIG. 4 shows another embodiment of the vertical rod, and (A) is a perspective view of the vertical rod. (B) is a plan sectional view showing the fixed state of the mounting.

5A and 5B show another embodiment of the vertical rod, and FIG. 5A is a perspective view of the vertical rod. (B) is a plan sectional view showing the fixed state of the mounting.

FIG. 6 shows another embodiment of the vertical rod, and (A) is a perspective view of the vertical rod. (B) is a plan sectional view showing the fixed state of the mounting.

FIG. 7 shows another embodiment of the vertical rod, and (A) is a perspective view of the vertical rod. (B) is a plan sectional view showing the fixed state of the mounting.

FIG. 8A is a perspective view showing a frame structure using a conventional fixing structure. (B) is a side view which shows the principal part of a fixing structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame structure 2 Base 2a Reinforcing bar 3 Mesh frame 5 Mounting rod 6 Fixture 7 Vertical rod 8 Horizontal rod 9 Mounting tool 10 Mounting piece 11 Support beam 50 Screw part 51 Flange 70 Contact surface 71 Mounting hole 72 Support surface 73 Protective member

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI E04B 2/86 611L

Claims (5)

[Claims] 1. A mesh form (3) is inserted through a mounting rod (5) and is clamped and fixed by a fixture (6), and the mesh form (3) is connected to a vertical rod (7) and a horizontal rod (8). In the frame structure (1) reinforced and supported by the above, the vertical rod (7) has a contact surface (70) that comes into wide contact with the mesh formwork (3) and a mounting rod (5) on the contact surface (70). It is formed by providing a mounting hole (71) through which it can be inserted, and while the mesh frame (3) and the vertical rod (7) are inserted through the mounting rod (5), they are clamped and fixed by a fixture (6). Mesh formwork fixing structure. 2. The vertical rod (7) is formed from a contact surface (70) having a mounting hole (71) and a support surface (72) integrally erected on one side of the contact surface (70). The fixing structure for a mesh formwork according to claim 1, wherein: 3. A plurality of vertical rods (7) erected along the mesh form (3) are connected and supported by horizontal rods (8) mounted on a fixture (6). Fixed structure of mesh formwork. 4. The fixing structure for a mesh formwork according to claim 1, wherein the horizontal rod (8) for connecting and supporting the vertical rod (7) is formed of wood. 5. The fixing structure for a mesh form according to claim 1, wherein a protection member for preventing sticking of the sliver is detachably attached to a lower end of the vertical rod.