JP3088924U - Concrete formwork structure - Google Patents

Abstract

[57] [Abstract] [Problem] To be able to construct a high-quality foundation concrete skeleton, have high bending strength and strong waist, and flexibly respond as an earthquake-resistant structure to ordinary houses, medium-sized buildings and large-sized buildings. To provide a concrete formwork structure that can be used. Kind Code: A1 A sheet metal form panel, a separator for keeping a space between opposing form panels, and a supporter attached to a surface of the form panel for reinforcing and supporting the form panel.
And a runner 20 for holding the lower end of the form panel, and a cap 20 for holding the upper end of the form panel.
The above-mentioned form panel is a substantially corrugated shape formed by concave grooves U and W having substantially the same size and the same shape, the front and back surfaces of which are alternately continuous. Separator through-holes 12 and 12 'and a through hole 14 provided between and in parallel with these through holes, and each lateral groove surface on the other side surface has a through hole 16 provided at regular intervals and in parallel. I have.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a concrete formwork structure for constructing a concrete structure, and more specifically, a formwork panel made of sheet metal, a separator for maintaining a gap between facing formwork panels, and reinforcing support for the formwork panel. The present invention relates to an improvement of the structure, which comprises a supporter attached to the surface thereof, a runner for holding the lower end of the form panel, and a cap for holding the upper end of the form panel.

[0002]

[Prior art]

 The formwork used for concrete structures is mostly plywood made from imported timber, and has been accused of encouraging over-cutting of timber resources in exporting countries such as Southeast Asia. Also, if the so-called construction material recycling law is implemented, there will be difficulties in the treatment of plywood waste generated by dismantling such forms after the concrete has cured and solidified.

In order to solve this problem, a plate made of sheet metal has been proposed in place of plywood. The advantage of this is that after the concrete has cured and solidified, the formed sheet metal form panel is directly filled. This eliminates the need for dismantling, unloading, and other collections, which saves the work and shortens the construction period.

[0004] However, such a form panel made of sheet metal is already known from Japanese Patent Application Laid-Open Nos. 5-133028 and 5-255988. These prior inventions are characterized by providing appropriate small holes in the panel made of sheet metal itself to promote the fixation between the cast concrete and the panel.

[0005] After the Great Hanshin-Awaji Earthquake, there has been a strong demand for concrete structures with even more seismic structures. In addition to the quality of frame concrete itself, the flexural strength has been improved to conform to the seismic concrete structures. There is a strong demand for a strong sheet metal formwork panel.

[0006]

[Problems to be solved by the invention]

 The main purpose of the present invention is to be able to construct a high-quality foundation concrete frame, to have a large bending strength and to have a strong waist, and to be able to flexibly cope with ordinary houses, medium-sized buildings and large-sized buildings as an earthquake-resistant structure. An object of the present invention is to provide a concrete formwork structure.

[0007]

[Means for Solving the Problems]

 The main purpose of the above is to form a sheet metal form panel, a separator for maintaining a space between the opposing form panels, a supporter attached to the surface of the form panel to reinforce the form panel, and a lower end of the form panel. In the combination of the runner holding the part and the cap holding the upper end of the formwork panel, the formwork panel described above has a substantially grooved groove having substantially the same dimensions and the same shape that is continuous on both sides. In the corrugated shape, each lateral groove surface on one side of the front and back surfaces has separator through holes provided at regular intervals and in parallel, and holes formed in parallel between these through holes, and each lateral groove surface on the other side has This is attained by having holes provided at regular intervals and in parallel.

[0008]

[Action]

 The sheet metal formwork panel used in the present invention has a substantially corrugated shape in which the front and back surfaces are formed by alternately continuous concave grooves of substantially the same size and shape, so that the bending strength is increased, and one side of the front and back surfaces is also provided. Each of the lateral groove surfaces has a separator through hole provided at regular intervals and in parallel and a through hole provided between and parallel to these separator holes, and the lateral groove surfaces on the other side surface are at regular intervals and parallel. With the holes provided in the concrete, the excess water (bleeding water) in the poured concrete is eliminated, the air bleeding is promoted, and a good-quality foundation concrete frame is obtained. The bending process can be flexibly performed with high dimensional accuracy, and the divergent lower concrete foundation can be used for ordinary houses, medium-sized buildings, and large-scale buildings to obtain seismic structures.

[0009]

[Embodiment of the invention]

 Preferred embodiments of the present invention will be described with reference to the drawings. FIG. 9 is an assembly explanatory view showing one embodiment of the present invention, and includes a sheet metal form panel 10, a separator 22 for maintaining a space between the opposing form panels, and a reinforcing panel for reinforcing and supporting the form panel. It comprises a supporter 24 attached to the surface, a runner 20 for holding the lower end of the form panel, and a cap 20 for holding the upper end of the form panel.

FIG. 10 shows an embodiment of a structure in which an inclined side surface portion is also configured. In these drawings and FIG. 6 described later, details such as a punched hole portion of a sheet metal form panel described later are omitted.

FIG. 1 is a longitudinal sectional view, a plan view, and an enlarged view of both ends of the longitudinal section showing a sheet metal panel used in the above-described embodiment.

A substantially corrugated shape formed by alternately continuous concave grooves U and W of substantially the same size on the front side 10 a and the back side 10 b of the sheet metal form panel body 10, and each horizontal groove surface U on the front surface is Separator through-holes 12 are provided at regular intervals and in parallel with each other, and punched holes 14 are provided between these through-holes 12 and in parallel except for U1 and U16 at both ends. Have holes 16 provided at regular intervals and in parallel. The through hole of the lateral groove separator at one end is a complete through hole 12 ', and a screw stop hole 18 is provided between these through holes.

As a preferred dimension design example, the total width is 628 mm (working width is 600 mm), the groove depth is 12 mm, the plate thickness is 0.35 mm, the pitch (P) is 40 mm, and the pitch is 15 pitches. , And the lateral groove W is composed of fifteen. Separator through-holes 12 and 12 'are provided on the lateral groove surface U (U1 to U16) in units of 50 mm, and the separator holes 12 are formed in the lateral grooves (U2 to U15) excluding the lateral groove U1 and punched holes are formed in the intermediate portions thereof. 14, the transverse groove U16 is provided with a complete square hole in the center of the separator hole 12 'in 50 mm units, and a screw stop hole 18 (3.5 mm in diameter) is provided in the middle thereof. A hole 16 is provided in the center of each of the lateral groove surfaces W1 to W15 in units of 25 mm. As shown in the figure, the left and right ends of the panel main body 10 are bent (heming) as a folded piece 10e of 4 mm to 5 mm for work safety. The number of the holes 14 provided between the separator through holes 12 is at least one, and one or more holes 14 may be provided.

In a preferred embodiment, the holes 14, 16 are provided with partially discontinuous turtle-shaped valve-type holes 14v, 16v as illustrated in FIG. A plan view is shown in the upper part of the figure, and a cross-sectional view is shown in the lower part. The upper and lower corner points A, A can be used as guides when bending in the groove, so that bending accuracy can be reduced, and bending labor can be reduced. Makes work easier.

As an example of the dimensions, a vertical length of 8 mm, a horizontal width of 5 mm, and a maximum opening clearance of the valve of 0.5 mm are preferable, and a concrete driving speed, 0.5 mm when vibration is applied, and abnormally high pressure is applied. The gap is closed, and only air bubbles such as breathing water, air and gas are discharged, while preventing the outflow of the main component of concrete and producing a higher quality concrete body.

In a preferred embodiment, the through holes 12 of the separator that maintain the distance between the opposing molds are configured as cut-away, partially discontinuous, square-shaped strips as specifically illustrated in FIG. .

In the conventional example, since the separator through-hole is circular, the separator and the fastener may rotate together with each other outside the diameter when the fastener is fastened. In order to prevent this, the diameter of the circle was increased by the amount of the protrusion protruding up and down from the round diameter as shown in the figure. However, the round hole was adjusted to the outside diameter of the hole, and the separator that passed through the hole rattled in the hole, and the separator swayed from side to side from the center, and tightening was unstable.

In the embodiment of the present invention, by making the hole into a square, the diameter of the hole passes through the corner of the square and the edge of the corner, and after the passage of the two, the round diameter of the separator becomes the edge of the hole. It fits inside and prevents backlash, stabilizes the center and improves the tightening effect.

The separator hole 12 can be generally avoided when there is an obstacle such as a reinforcing bar. In the lateral groove surfaces U1 to U15, the holes are closed as half punched holes (half) unless necessary, and only when necessary, as shown by the arrow in FIG. it can. Since the separator hole 12 in the lateral groove surface U16 is a complete hole and overlaps with the other panel lateral groove surface U1 when the panel is assembled, all the holes are closed after assembly. There is no need for drilling work at the construction site, it is efficient and safe, and plays a major role in construction technology.

According to the present invention, a substantially corrugated form panel formed by alternately continuous concave grooves of substantially the same size and shape is used, and the holes 12, 14, and 16 are provided like a mesh. As a result, the panel can be bent more finely than the conventional panel, and an example of the mode is shown in FIG. In the above dimensional design, as shown in the lower part of FIG. 1, the opening width (S 2) of the lateral groove is 22 mm and the bottom width (S 1) is 18 mm. The 90 degree angle is determined at the point where b intersects. In the case of the bending shown in FIG. 10E, the free angle is up to 180 ° bending. The application range is widened to obtain a bending angle with such fine dimensions.

As shown in FIG. 5, when forming footing and column-shaped beams, the corners of the circles were conventionally assembled using a separate corner plate, but the formwork panel according to the present invention was used. In all of the panels, the panels themselves have finer folds (holes) than conventional panels. By controlling the dimensions of the folds technically, it is possible to easily create them without using a corner plate. It is also possible to create irregular forms such as turtle shells and rhombic forms.

In the sheet metal form panel according to the conventional example, since the angled reinforcing ribs are provided at long intervals, the reinforcing ribs are cut laterally by leaving the surface portions therebetween to form a waist panel. Although processing was performed on site, the cutting technology was not clear, and there was difficulty in processing, and procurement was not sufficient.

The sheet metal formwork panel used in the present invention is bent to 90 degrees by a special mold in the factory production of the panel body, so that it becomes a “C” shape as shown in the upper part of FIG. A waist panel can be obtained that can be bent later. FIG. 6 is a schematic view in which the holes and the like are omitted.

In recent years, it has been easy to construct a strong foundation frame by developing such a stiffened panel, which has been required to have a strong foundation as a measure against earthquakes. Although there are various shapes of the frame as shown in the lower part of the figure, the maximum condition is that the separator can be passed in parallel during assembly. The height of the bent portion must be 50, 100, 150, 200 and 50 millimeter units (between the dashed lines in the lower part (A) to (D) of FIG. 6). Next, the length of the curved side, which is also the same as the bending height, must be 50, 100, 150, 200, and 50 mm units (between the dashed lines in the lower (A) to (D) of FIG. 6). No. Dimensional accuracy conditions are absolutely necessary. When a stiffened panel is manufactured by a conventional cutting and bending method, there is a disadvantage that a bent portion is opened and a large amount of concrete flows out of the bent portion.

Utilizing as a waist panel according to the dimensional conditions described above, it is used for a general house (small standard) as shown in the lower part (C) of FIG. 6, for a medium-sized building (middle standard) as shown in FIG. For large buildings such as A) (large standard), three standards can be created and bent at a free angle. As shown in Fig. 7, when installing with such a waist panel, accessories such as a separator 22, an angle 24, a steel pipe 24 ', a runner 26, and a guide cap 28 are used. However, for general residential use, use a different guide cap from the commercially available one as described later. The reason is that it is necessary to reduce the size because there is little space at the time of assembly and the support (angle) and the fastener may overlap.

FIG. 7 shows examples (A) and (A ′) of formwork in which the sheet metal formwork panel used in the present invention is used as a waist panel, and FIG. Shows the use of the panel from the previous example, in which the waist was discontinuous and the concrete leaked from there. The figure (C) shows the case using a plywood panel, and no panel is formed at the waist.

According to the present invention, a substantially corrugated form panel formed by alternately continuous concave grooves having substantially the same size and shape is used, and the holes (12, 14, 16) are provided like a mesh. Because of this, the bending strength is greatly improved compared to the conventional panel, and the bending pitch can be adjusted to a narrower size, so that it can be applied not only to vertical use (standing side) but also to horizontal use (floor). FIGS. 8A and 8A show an application example of the bottom receiving method, while FIG. 8B shows a conventional example, in which a plywood is used for the floor surface.

In the case of the bottom receiving work, which has conventionally been difficult to perform, the use of the formwork panel used in the present invention is facilitated. As shown in the illustration (A), first calculate the dimensions of the two pieces (10, 10) on the left and right of the vertical panel beam in accordance with the design dimensions, add the beam width to the dimensions, and then calculate the panel 10F as the bottom support. Bend the both ends of the box so that they are equal to the left and right. The bent left and right parts are temporarily fixed to the vertical panels (10, 10) with screws 18 ', supported on the steel pipe 30 from the bottom, and a wire (wire) 32 is passed through the inside diameter of the steel pipe, and the right and left upper angles After inserting and tightening to 24, it is supported from the lower part of the steel pipe by a thick end 34 or a jack.

As shown in FIG. 11 (C), as the first step of the foundation formwork construction, first, concrete nails NL are driven into the runner 26 along the black line on the discarded concrete CR to mount the formwork panel 10. Insert guide. After the form panel 10 is built, a cap 28 is put on the top of the form panel 10, and a core and a level are put out. Conventionally, such a cap and a runner are separate products. However, in order to reduce the number of members, it is preferable to use the upper cap and lower runner 20 as a member product for both.

FIGS. 7A and 7B show an example of the structure 20. For example, the fixed length is 2000 mm, the cross section is U-shaped, the front height is 30 mm, and the rear height is 50 mm. Millimeter, front part The tip of 5 mm is beveled as a 4 mm to 5 mm folded piece with a 5 degree bevel. The plate thickness was 0.6 mm and the width was 17 mm. The folded pieces at both ends provide strength and safety.

Also, a 15 mm × 3 mm slot is provided on a surface having a height of 30 mm in front, and this portion is unnecessary when used as an upper cap, but is not required when used as a lower runner. The millimeter part is cut with a cutting tool (Baby Sander) and the surface is bent forward to allow the head of the concrete nailing machine to enter easily without obstacles. Can be driven without difficulty. When used as an upper cap, its long and small grooves are diagonally machined, so there is no effect of obstacles.

[0032] Caps 20 are put on the upper end surfaces of two adjacent formwork panels, and the joints (joints) of the respective caps are conventionally 50 mm to 100 mm, one from the top. It was screwed from that part and the dimensional accuracy was poor. Therefore, in the formwork according to the present invention, as shown in FIG. 12 (A), a rectangular thin plate (for a straight line) 30A is disposed on the lower surface of each cap 20 attached to each upper end surface. As shown in B), it is preferable to use joints made of a thin metal plate (for right angle) 30B disposed on the upper surface of each cap 20 attached to each upper end surface, each of which is a fixed distance from both ends. A screw passage groove is provided along.

The joints of the cap are butted in parallel, and the joints are distributed and inserted into the joints, and screwed in from above. Such joints have narrow grooves at both ends, which increase the size in the left and right directions when screwing, and reduce the gap inside the cap to 0, thereby improving the accuracy of fixing.

A formwork constructed using a formwork panel is generally supported by attaching a square steel pipe or a round steel pipe to a surface of the formwork as a support, and such a steel pipe member is heavy. It was very bulky, and required four processes: on-site delivery, demolition after concrete inflow, and storage curing. For this reason, there has been a demand for a supporter that is light, has a small bulk, does not require a dismantling and unloading process, and is inexpensive.

Therefore, in a preferred embodiment of the present invention, as shown in FIG. 13, a vertical form is used to reinforce and support a formwork that is constructed using formwork panels, and on which a concrete is cast on the back side. An angle 24 'having an L-shaped cross section attached to the directional surface and a fastener 24f having a separator through-hole in the abdomen and holding and fixing the angle with the jaw by a jaw, a bulge is formed on the abdomen of the angle. A fastener having a recess at the lower part of the jaw of the fastener opposite to the fastener is used. FIG. 14 is a sketch of the fastener, and 24r indicates a raised portion.

In another preferred embodiment of the present invention, the longitudinal surface of a formwork constructed with formwork panels and having a concrete-cast backside is shown in FIG. An angle 24A having an L-shaped cross section is attached as described above, and this is fastened and fixed with a commercially available fastener 24c, and another similar angle 24B is attached to the surface of the formwork by overlapping with the angle and screwed and fixed thereto. That is, the form-supporting construction method is applied. In this case, the two angles 24A and 24B used repeatedly can be used as they are on the market, and the cost can be reduced. FIG. 15 is an explanatory view of an example of assembly by such a construction method.

[0037]

[Effect of the invention]

 According to the present invention, the following effects can be obtained. 1. The use of sheet metal formwork panels with perforations arranged like a mesh allows excess water (bleeding water) to be discharged, and a high-quality basic concrete body to be produced by venting. 2. Since the holes arranged like a mesh work effectively to bend the panel body, labor for fine bending is reduced, and on-site construction with high dimensional accuracy is possible. 3. Since the front and back sides are almost the same size and the same size, the horizontal bending process, which was difficult for conventional processing, can be freely bent from 0 ° to 90 ° by one shape and one machine die. A strong panel is obtained. 4. Since the bending pitch (P) is smaller than that of the conventional panel, the base receiving work, which is difficult in on-site construction, becomes accurate and strong and efficient. 5. The left and right ends of the panel are bent (hemmed) to provide folded pieces, which improves the handling safety for workers. 6. The improved panel flexural strength eliminates the need for heavy and bulky steel pipes, unlike conventional supporters, and enables the use of lighter and smaller angle supporters for construction, making transport and organizing very easy. The cost savings are significant. 7. Many holes are provided in an even distribution, which not only results in a good-quality concrete frame, but also provides good adhesion between the panel and concrete. Conventional plywood was treated as a discarded formwork, but nowadays it is required that buildings have a stronger foundation, and the panels themselves need to be used rather than discarded to play their part. The formwork panel according to the present invention was designed to fulfill its role. Reinforcement is bone as the foundation, concrete is meat, and the panel is a three-layer structure with the outer skin, forming a solid foundation. The formwork panel according to the present invention can sufficiently fulfill its tasks as a skin.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view, a plan view, and an enlarged view of both ends of a longitudinal section showing an embodiment of a sheet metal panel used in the present invention.

FIG. 2 is an explanatory view of a partly discontinuous quadrangular cutout which is preferable as a separator through hole.

FIG. 3 is an explanatory view of a valve-type punching hole which is preferable as a punching hole.

FIG. 4 is a view showing an example of a mode of bending.

FIG. 5 is an exemplary diagram of a mold frame having a corner angle obtained by bending.

FIG. 6 is an explanatory view when the panel is used as a waist panel.

FIG. 7 is an exemplary view of a mold having a slope side portion or a horizontal portion.

FIG. 8 is a construction explanatory view using a panel on the bottom surface for use of lateral bending.

FIG. 9 is an exemplary view of a mold structure assembly showing one embodiment of the present invention.

FIG. 10 is a view showing an example of a mold structure in which a slope is also configured.

11A and 11B are a configuration example diagram and a usage mode diagram of an upper cap and lower runner for a form panel.

FIG. 12 is a view showing an example of the configuration of a joint for a form panel and an example of use thereof.

FIG. 13 is a front view and a side view showing one embodiment of a form supporter.

FIG. 14 is a perspective view of a fastener for a form supporter.

FIG. 15 is a structural partial surface view, a plan view, and a side view showing another supporter of the present invention.

[Explanation of symbols]

10 Formwork panel body 10a
Front side U, W side groove 10b
Back side 12, 12 'Separator through hole 10e
Folded piece 14, 16 Drilled hole 18
Screw stop hole 12t Partially discontinuous square cutout piece that can be separated 14v Partially discontinuous turtle-shaped valve-shaped cutout hole

Claims (10)

[Utility model registration claims] 1. A formwork panel made of sheet metal, a separator for maintaining a space between opposed formwork panels, a supporter attached to a surface of the formwork panel for reinforcing and supporting the formwork panel, and a lower end of the formwork panel A runner, and a cap for holding the upper end of the form panel, the form panel is a substantially corrugated shape, the front and back surfaces of which are formed by alternately continuous concave grooves of substantially the same size and shape. Each lateral groove surface on the front and back one side surface has a separator through hole provided at regular intervals and in parallel and a through hole provided between and parallel to these separator holes, and each lateral groove surface on the other side surface at regular intervals and A formwork structure for concrete, characterized by having a hole provided in parallel. 2. The concrete formwork structure according to claim 1, wherein the separator through-hole of the formwork panel is formed as a partially discontinuous square piece that can be separated. 3. The concrete formwork structure for concrete according to claim 1, wherein the formhole of the formwork panel is a discontinuous turtle-shaped valve-type formhole. 4. The concrete formwork structure according to claim 1, wherein the upper and lower intermediate slopes are formed by sheet metal formwork panels. 5. The concrete formwork structure according to claim 1, wherein the lower horizontal surface portion is formed by a sheet metal formwork panel. 6. An upper cap / lower runner for a formwork panel having a U-shaped cross section capable of fitting the upper end surface or the lower end surface of the sheet metal formwork panel and the inner and outer surfaces immediately adjacent thereto, and having a nail hole in the outer surface portion. The concrete formwork structure according to claim 1, wherein the concrete formwork is used. 7. A rectangular thin plate disposed on the lower surface of each cap attached to each upper end surface between two upper end surfaces of two adjacent form panels, and screws are threaded along a predetermined distance from both end sides thereof. The concrete formwork structure according to claim 1, wherein a formwork panel joint having a groove is used. 8. A thin metal plate disposed on the upper surface of each cap attached to each upper surface between the upper surface portions of two adjacent formwork panels, and a screw is inserted along a predetermined distance from both ends thereof. The concrete formwork structure according to claim 1, wherein a formwork panel joint having a groove is used. 9. The supporter comprises an angle having an L-shaped cross section and a fastener having a separator through-hole at the abdomen, which clamps and fixes the angle at the jaw, and has a raised portion at the abdomen of the angle. The concrete formwork structure according to claim 1, characterized in that it has a concave portion at a lower portion of a jaw portion of the fastener opposed thereto. 10. The supporter comprises two angles having an L-shaped cross section, a fastener for one angle, and a fixing screw for the other angle which is used by being overlapped with one of the angles. Item 4. The concrete formwork structure according to Item 1.