JP5450016B2 - Concrete formwork - Google Patents

Description

  In the present invention, concrete is placed in a concrete placement space (referred to as a cavity in the present application) configured between formwork panels that are placed opposite to each other surrounding a reinforcing bar or steel frame. The present invention relates to a concrete casting form for forming a reinforced concrete structure and a steel reinforced concrete structure (concrete structure). Particularly, the first and second formwork panels made of foamed synthetic resin are used as the formwork panels. The present invention relates to a formwork for placing concrete that forms a concrete structure in which a first formwork panel and a second formwork panel are integrated on the front and back main surfaces.

  Conventional concrete building forming methods generally consist of a rebaring process that combines reinforcing bars, a formwork assembly process that surrounds the rebars and places the formwork panels facing each other at a predetermined interval, and the formwork panels. A concrete pouring process for pouring concrete into the cavity is performed, and after a predetermined curing period, a concrete panel such as a column, a beam, a wall, or a slab is formed through a process of disassembling the formwork panel. In the conventional construction method, the form panels assembled when forming each concrete frame part in this way are dismantled and transported from the construction site. A space for temporarily storing the members and the like was necessary.

  Further, in the conventional method for forming a concrete building, an assembling process of an attachment member for attaching an interior material such as an interior board such as a stud or a frame material to the above-described concrete frame part is performed. In addition, in the conventional construction method, after installing appropriate heat insulation / moisture-proof body such as heat insulation / moisture-proof board on the surface of the bare concrete frame, the installation process of the interior material is performed after measures such as heat insulation, sound insulation, moisture prevention, etc. Applied. Therefore, in the conventional construction method, the heat insulation / moisture-proof body and its installation process are also performed, which increases the number of days and costs.

  As a method of solving the problems of the conventional concrete building forming method described above, the present applicant also used a foamed synthetic resin form panel, and left it on the surface of the concrete frame part forming this frame panel. The construction method which forms is proposed (refer patent document 1). According to the concrete building forming method, the dismantling process of the formwork panel is not necessary, and the foamed synthetic resin formwork panel integrated on the surface of the concrete frame part functions as the above-described heat insulating and moisture-proof body. Play.

Japanese Patent No. 4169159

  The concrete casting form described in Patent Document 1 is formed by combining a pair of foamed synthetic resin form panels with an opposing distance adjustable via a coupling mechanism. The concrete casting mold is composed of a pair of arms (webs) combined in an X shape by connecting the coupling mechanisms at the center, and the outer ends of the formwork panels. And a pair of plates on which connecting pieces are formed. The concrete placement formwork is formed by a pair of arms that are pivotally coupled at the central portion, and the tip end portion is connected to a plate mounting piece that has penetrated the formwork panel to adjust the connection position. Assembling of the mold is performed by appropriately setting the interval between the panels.

  In such a concrete casting formwork, a concrete frame part integrated with a formwork panel having the above-described effects is formed, and a thickness specification is changed by adjusting a facing interval of the formwork panel via a coupling mechanism. It is possible to form a concrete skeleton part to be made. In a concrete casting formwork, a connecting mechanism with a simple structure holds the formwork panel and also functions as a reinforcing material that remains inside the concrete frame part and maintains its mechanical strength along with the reinforcing bars. In the concrete placement formwork, even if a coupling mechanism is installed in the cavity, a sufficient space for reinforcing bars is secured and the flow of concrete is ensured, so there is no generation of junkers and high precision concrete frame parts Form.

  Although it is a formwork for concrete placement having the various features described above, a connecting member such as a connecting pin is inserted after positioning the mounting holes formed in the narrow cavities formed between the formwork panels. Since each arm and the plate are coupled, there is a problem that workability at the time of assembly is slightly deteriorated. Moreover, in the concrete casting formwork, since many connecting pins for connecting each arm and the plate are used together with the connecting member for connecting the arms, parts can be saved in comparison with the conventional method. However, there was still a problem that the number of parts was large. Furthermore, in the concrete casting formwork, the rebar assembly was integrally formed on each arm so that high-precision bar arrangement was performed, but there were places where the assembly would be complicated instead. .

  The present applicant followed the characteristics of the concrete application form of the prior application for forming the above-described concrete structure integrated with the form panel, and conducted extensive studies to solve the problems. The present invention further enables simple and efficient installation, and it is possible to form a concrete structure with a good finish while maintaining the fluidity of the concrete while ensuring sufficient space in the cavity. An object of the present invention is to provide a concrete casting form.

  The concrete casting mold according to the present invention that achieves the above-mentioned object is made of a foamed synthetic resin that constitutes a cavity for placing concrete between opposing inner surfaces by facing each other with a predetermined spacing. A plurality of sets each having a first web and a second web, which are combined in an X shape with the central portion connected to the first formwork panel and the second formwork panel. A plurality of web sets, a first formwork panel, and a second formwork panel that are attached to and detached from each other to integrate the first web and the second web of each web set into the first formwork panel and the second formwork panel. By assembling the connecting mechanism constituted by the first base plate and the second base plate, the concrete is placed into the cavity while maintaining the facing distance between the first form panel and the second form panel. To. In the concrete casting formwork, the first formwork panel and the second formwork panel do not require demolding work after a predetermined curing period by placing a predetermined reinforcing bar in the cavity. Forms a concrete structure integrated with the main surface as it is.

  In the concrete casting form, the first form panel and the second form panel are formed by arranging a plurality of base plate assembling portions side by side in the length direction at positions opposite to each other, and these base plate sets A first web insertion slit and a second web insertion slit are formed through the attachment portion in the thickness direction, respectively. In the concrete casting form, the first web and the second web of each web set each form a connecting portion at the center, a first base plate engaging portion at one end, and a second at the other end. A base plate engaging part is formed, and the web part is configured by connecting the central part through a connecting part and combining them in an X shape. The first web and the second web have a first base plate engaging portion and a second base plate engaging portion formed at the tip in a state where the web set is combined with the first form panel and the second form panel, It is inserted into a first web insertion slit or a second web insertion slit formed opposite to the first formwork panel or the second formwork panel and protrudes from the base plate assembly portion to the outer surface.

  The formwork for placing concrete includes the first base plate engaging portion of the first web or the second web of the second web penetrating the first base plate and the second base plate through the first web insertion slit or the second web insertion slit. A first web engaging portion and a second web engaging portion that are opposed to the base plate engaging portion are formed. The first base plate and the second base plate are assembled from the outer surface of the first form panel or the second form panel in a state where the web set is combined with the first form panel or the second form panel. It is attached to the part. The first base plate and the second base plate pass through the first form panel and the second form panel and protrude to the outer surface. The first base plate engaging portion of the first web or the second base plate engaging of the second web The parts are engaged with the first web engaging part or the second web engaging part facing each other, and assembled to the base plate assembling part.

  In the concrete casting formwork, for example, a plurality of web sets are arranged side by side on the inner surface of the first formwork panel so as to be opposed to the base plate assembly portion. In the concrete placement formwork, the first web base plate engaging portion or the second web set is opposed to the first web insertion slit or the second web insertion slit with respect to the first formwork panel. The second base plate engaging part of the web is fitted and inserted, and the respective tip parts are assembled to protrude from the base plate assembling part to the outer surface. In the concrete casting form, the first base plate is opposed to the first web engaging part and the second web engaging part with respect to the first form panel, respectively. By assembling the second base plate engaging portion of the second web to be engaged, the web set is integrated with the first formwork panel.

  In the concrete casting formwork, the second formwork panel is opposed to the first formwork panel with the web set assembled on the inner surface with the web set facing the base plate assembly portion. In the concrete casting formwork, the first web base plate engaging portion or the second web set is opposed to the first web insertion slit or the second web insertion slit with respect to the second formwork panel. The second base plate engaging part of the web is fitted and inserted, and the respective tip parts are assembled to protrude from the base plate assembling part to the outer surface. In the concrete casting form, the second base plate is assembled to the base plate assembly portion from the outer surface with respect to the second form panel. In the concrete casting form, the second base plate is engaged with the first base plate engaging portion of the first web or the second base plate of the second web facing the first web engaging portion and the second web engaging portion, respectively. The web set is integrated with the second formwork panel by engaging the joint portion and assembling the second formwork panel.

  In the concrete placement formwork, the first formwork panel and the second formwork panel are installed facing each other through a plurality of web sets with a predetermined facing distance by the above-described work, and between the opposing inner side faces. A cavity for placing concrete into the wall is constructed. In the concrete casting formwork, the first web and the second web of each web set hold the first formwork panel and the second formwork panel, and the first formwork panel and the second formwork panel. Are held by the first base plate and the second base plate assembled to the base plate assembly portion.

  In the concrete placement formwork, when the above-described second formwork panel is combined, for example, a predetermined bar arrangement work is performed in which a large number of reinforcing bars are combined and installed along the first formwork panel. In the concrete placement form, concrete placement is performed in which concrete is poured into a cavity formed between the first formwork panel and the second formwork panel. In the concrete casting form, since the first web and the second web of each web set installed in the cavity have a simple shape, a sufficient bar arrangement space is secured. In concrete casting molds, it is possible to use a vibrator that maintains the fluidity of the concrete in the cavity and eliminates the generation of junkers and compacts the concrete. Form.

  In the concrete placement formwork, the first formwork panel and the second formwork panel form a concrete structure that is integrated with the main surface of the concrete frame as it is, so that it is removed after a predetermined curing period. No mold work is required. In the concrete casting formwork, each connecting mechanism that integrates the first formwork panel and the second formwork panel also has a function of reinforcing the concrete frame, thereby forming a concrete structure having high mechanical strength. In the concrete placement formwork, the first formwork panel and the second formwork panel function as heat insulating materials, so it is possible to eliminate the need to paste the heat insulating materials, shortening the work period and reducing the construction cost. Reduce. In the concrete casting form, a concrete structure is formed with improved heat insulation, sound insulation, high airtightness, fire resistance, ventilation, durability, or earthquake resistance.

  According to the concrete casting form according to the present invention configured as described above, the first mold panel and the second form panel are combined in a X-shaped first web and second web. A plurality of web sets, and a first base plate and a second base plate that are combined with the outer surfaces of the first and second formwork panels to hold the first and second webs of each web set. Integrate with the base plate. According to the concrete casting form according to the present invention, the efficiency of the bar arrangement work and the assembling work can be improved, and further, the construction period can be greatly shortened in combination with the need for the mold form disassembling process. According to the concrete casting form according to the present invention, the first web and the second web of each web set installed in the cavity have a simple shape and ensure a sufficient bar arrangement space inside. The cast concrete can flow well and the occurrence of jumpers can be eliminated, and a high-precision concrete building can be formed. According to the concrete casting form according to the present invention, the construction cost can be greatly reduced by shortening the construction period and reducing the member cost.

It is a principal part perspective view of the concrete placement form shown as embodiment of this invention. It is a principal part disassembled perspective view of the same concrete placement form. It is principal part sectional drawing of the same mold for concrete placement. It is a principal part front view of the formwork panel which comprises the same mold for concrete placement. It is a front view of the web which comprises the same mold for concrete placement. It is a side view of the base plate which comprises the same mold for concrete placement. It is a top view of the base plate. It is a principal part exploded perspective view explaining the assembly process of the same mold for concrete placement. It is a principal part perspective view explaining the assembly process of the base plate in the assembly process of the same concrete placement formwork. It is principal part sectional drawing which shows the concrete building formed with the same mold for concrete placement. It is a principal part disassembled perspective view explaining the assembly process of the mold holding part with respect to the same mold for concrete placement.

  Hereinafter, a concrete casting form 1 (hereinafter abbreviated as a form 1) shown as a first embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 3, the mold 1 is disposed opposite to each other with a predetermined interval, thereby forming a first mold panel 2 </ b> A and a second mold that constitute a cavity 10 in which concrete is placed. The frame panel 2B is constituted by a plurality of connecting mechanisms 3 that are assembled between the first mold panel 2A and the second mold panel 2B and maintain the facing distance therebetween. The formwork 1 includes a plurality of web sets 4 in which the connecting mechanism 3 includes a first web 5A and a second web 5B, and a plurality of first base plates 6A and a first base plate 6A attached to and detached from the first formwork panel 2A. It comprises a plurality of second base plates 6B attached to and detached from the two-frame panel 2B.

  In addition, since the 1st formwork panel 2A and the 2nd formwork panel 2B are the panel materials of the same shape used so that it may be installed facing upside down (front and back), except when it demonstrates separately below Collectively referred to as a formwork panel 2. Further, the first web 5A and the second web 5B of each web set 4 are also webs of the same shape that are combined by inverting them upside down (front and back), and are therefore collectively referred to as webs 5 unless otherwise described below. . Furthermore, since the first base plate 6A and the second base plate 6B are plate members having the same shape that are combined by reversing the upper and lower sides (front and back), they are collectively referred to as the base plate 6 unless otherwise described below.

  For example, as shown in FIG. 10, the mold 1 is placed on a base concrete 7 with vertical bars 8 </ b> A provided upright by positioning the first-stage mold 1 </ b> A with a pier 43 and a base of a concrete frame 9 such as a concrete wall. And the second stage mold 1B is installed on the base to form the upper part of the concrete frame 9. The mold 1 forms a concrete frame 9 having a predetermined height by sequentially repeating this process. Needless to say, the mold 1 is not limited to such a process, and a conventional general construction method, for example, a plurality of sets in advance may be combined in multiple stages to form a concrete frame 9 having a predetermined height. .

  In the mold 1, the first mold panel 2 </ b> A and the second mold panel 2 </ b> B are arranged so that a reinforcing bar set 8 in which the horizontal bars 8 </ b> B are appropriately arranged with respect to the vertical bars 8 </ b> A is installed in each cavity 10. Each of the coupling mechanisms 3A and 3B is installed with a predetermined facing distance. The formwork 1 may be a formwork for forming each concrete frame part such as a pillar, beam, wall, or slab of a concrete building as well as a concrete wall, and is appropriately set according to the formation part. .

  As shown in FIG. 10, the formwork 1 forms a concrete frame 9 formed by integrating the first formwork panel 2A and the second formwork panel 2B on the front and back main surfaces. As will be described later, the mold 1 is configured so that the first mold panel 2A and the second mold panel 2B face each other with an interval of 180 mm to form a cavity 10, and 45 mm each on the front and back main surfaces of the concrete frame 9. The thick first mold panel 2A and the second mold panel 2B are integrated to form a concrete wall having a thickness of 270 mm as a whole. Accordingly, the mold 1 also eliminates the process of disassembling the mold panel, as in the concrete casting mold of the prior application described above, and has a heat insulation, sound insulation, high performance by the mold panel 2 integrated with the concrete frame 9. It is possible to form a concrete structure with improved airtightness, fire resistance, ventilation, durability, or earthquake resistance while greatly shortening the construction period.

  As for the formwork 1, the formwork panel 2 is formed in a horizontally long rectangular panel body using a foamed synthetic resin material, for example, a foamed polyethylene resin. The formwork panel 2 is formed with external dimensions of, for example, a length of about 1200 mm, a width of about 400 mm, and a thickness of about 45 mm. Of course, the formwork panel 2 is not limited to such an external dimension specification, and is formed with an appropriate specification according to the specification of the concrete housing 9, the formation site, or other conditions. The mold panel 2 may use a foamed synthetic resin material such as a foamed polystyrene resin, a foamed polyethylene resin, or a foamed polyurethane resin as a material. The formwork panel 2 is made of such a foamed synthetic resin material, so that the concrete enters the inside and is hardened to be firmly integrated with the concrete frame 9. By using the above-mentioned materials, the formwork panel 2 can be easily processed and is lightweight, so that handling such as transportation and installation is easy, and it is integrated with the surface of the concrete frame 9. Thus, the above-described characteristics such as heat insulation are exhibited.

  The formwork panel 2 is arranged so that the first formwork panel 2A and the second formwork panel 2B are turned upside down as described above and are opposed to each other with an interval of about 180 mm. It is the panel material of the same shape which comprises the cavity 10 in which concrete is laid between 11B (henceforth the inner surface 11). The mold panel 2 includes a plurality of base plate assembly portions 13A and 13B (hereinafter referred to as base plates) on the other main surfaces 12A and 12B (hereinafter collectively referred to as the outer surfaces 12) which are outside in a state where the mold 1 is assembled. The assembly part 13 is collectively referred to.). In the following description of the formwork panel 2, the terms “upper, lower, left and right” are based on FIG. 1, and the other formwork panel 2B is turned upside down with respect to the formwork panel 2A shown on the front side in FIG. Since they are combined, the vertical and horizontal positions are reversed.

  Although only one base plate assembly portion 13 is shown in FIGS. 1 and 2, the mold panel 2 is formed in plural on the outer side surface 12 in the length direction. As will be described later, the mold panel 2 is held by assembling the connecting mechanism 3 to the base plate assembling portion 13 to assemble the mold 1. In the mold panel 2, base plate assembling portions 13A and 13B are formed so as to be opposed to the outer surfaces 12A and 12B of the first mold panel 2A and the second mold panel 2B.

  When the formwork panel 2 is arranged opposite to the outer dimensions described above with a facing interval, a half-shaped base plate assembly half is formed at each end portion in the length direction, although not shown. At the same time, two base plate assembly portions 13 are formed on the outer surface 12 with an interval of about 400 mm. In the mold 1, the mechanical strength at the time of placing concrete is maintained by combining the connection mechanism 3 with a distance of about 400 mm in the length direction with respect to the mold panel 2 having the above-described outer dimensions. In addition, the mechanical strength of the formed concrete casing 9 is maintained by the web 5 of the coupling mechanism 3 as will be described later.

  As shown in FIGS. 2 and 4, the base plate assembly portion 13 is formed on the outer surface 12 of the mold panel 2 with a nut fitting recess 14, a first web fitting insertion slit 15, and a second web fitting insertion slit 16. It is comprised by the site | part in which the 1st base fitting slit 17 and the 2nd base fitting slit 18 were formed. As will be described later, the base plate 6 is assembled to the base plate assembly portion 13 from the outer surface 12 of the mold panel 2.

  The nut fitting recess 14 is formed at the center of the base plate assembly 13. As will be described later, the nut fitting recess 14 positions and fits the mounting nut member 33 provided on the inner surface of the base plate 6 assembled to the base plate assembly 13. The nut fitting recess 14 has a function of guiding the mounting nut member 33 when the base plate 6 is assembled to the outer surface 12 with respect to the mold panel 2 and also has a function of holding the combined state and restricting movement.

  The first web insertion slit 15 and the second web insertion slit 16 are formed in the base plate assembly 13 as slits in the height direction that penetrate the formwork panel 2 at symmetrical positions in the upper and lower regions sandwiching the nut fitting recess 14. It is formed. The first web insertion slit 15 and the second web insertion slit 16 have a slit width substantially equal to the thickness of the first web 5A and the second web 5B, and the first web 5A and the second web 2 are opposed to each other as described later. The front end portion of the web 5 </ b> B is projected from the inner side surface 11 of the mold panel 2 to the outer side surface 12.

  As shown in FIG. 4, the first base fitting slit 17 and the second base fitting slit 18 are made of slits with a bottom in the height direction formed at symmetrical positions in both side regions sandwiching the nut fitting recess 14. As will be described later, the first base fitting slit 17 and the second base fitting slit 18 position and assemble both ends of the base plate 6 in the base plate assembling portion 13 and restrict the movement.

  As described above, the half-shaped base plate assembly half is formed in the mold panel 2 at both end portions in the length direction. In a state where the formwork panels 2 are combined side by side in the lateral direction, the base plate assembly part halves are combined to form one base plate assembly part 13. As will be described later, the web frame 4 constituting the coupling mechanism 3 is also assembled to the base plate assembly portion 13 of the mold panel 2. In this way, the mold panel 2 is held by the connecting mechanism 3 in the same way as the midway part in the length direction, so that the lifting of the end portion is regulated and the mechanical strength is high. Configure.

  In addition, about the baseplate assembly | attachment part 13, although the site | part mentioned above was formed in the outer surface 12 of the formwork panel 2, of course, it is not specified to this structure. The base plate assembling part 13 may be formed by forming, for example, a recess for loading the base plate 6 in the outer surface 12 and forming each part in the recess. The base plate assembly portion 13 prevents the base plate 6 from protruding from the outer surface 12 by a thickness, and restricts the outer peripheral portion of the base plate 6 by the groove wall, so that the nut fitting concave portion 14 or the first base fitting described above is performed. The slit 17 and the second base fitting slit 18 can be omitted.

  The formwork panel 2 constitutes the formwork 1 by abutting the outer peripheral edge portions where a large number of sheets face each other and being installed by being combined vertically and horizontally. The formwork panel 2 has a fitting portion 19 which is relatively fitted in order to prevent the generation of a gap causing concrete leakage and to form a flat outer surface without causing a step at the outer peripheral edge to be abutted. Is formed. In addition, about the fitting part 19, only fitting part 19A, 19B formed in the up-and-down outer periphery part is illustrated and demonstrated in detail.

  As shown in FIGS. 1 and 2, the outer peripheral edge of the mold panel 2 is divided into an outer region and an inner region having a thickness of ½ with respect to the thickness direction, and a fitting portion 19 is formed between the outer region and the inner region. Are integrally formed. The fitting portion 19 includes a large number of outer fitting convex portions 20A and 20B (hereinafter collectively referred to as the outer fitting convex portion 20) and a large number formed adjacent to each other in the length direction in the outer region of the outer peripheral edge portion. Outer fitting recesses 21A and 21B (hereinafter collectively referred to as outer fitting recesses 21) and a large number of inner fitting protrusions 22A and 22B (hereinafter referred to as the lengthwise direction of the inner region). , And collectively referred to as the inner fitting convex portion 22) and a large number of inner fitting concave portions 23A and 23B (hereinafter collectively referred to as the inner fitting concave portion 23). The fitting part 19 includes an outer fitting convex part 20 and an outer fitting concave part 21 that are alternately formed in the outer region of the outer peripheral edge over the entire length direction, and the inner fitting convex part 22 and the inner fitting part. Combined recesses 23 are alternately formed in the inner region of the outer peripheral edge over the entire length direction.

  The fitting part 19 is formed by the outer fitting convex part 20 and the outer fitting concave part 21 and the inner fitting convex part 22 and the inner fitting concave part 23 having substantially the same convex dimension and concave dimension. The fitting portion 19 is formed by shifting the inner fitting convex portion 22 and the inner fitting concave portion 23 by one pitch with respect to the outer fitting convex portion 20 and the outer fitting concave portion 21. The inner fitting concave portion 23 faces the mating convex portion 20 and the inner fitting convex portion 22 faces the outer fitting concave portion 21. In addition, the fitting portion 19 includes an inner fitting convex portion 22 and an inner portion with respect to the row of the outer fitting convex portion 20 and the outer fitting concave portion 21 in the upper outer peripheral edge portion and the lower outer peripheral edge portion of the formwork panel 2. The rows of fitting recesses 23 are formed with a shift of one pitch.

  As shown in FIG. 3, the formwork panel 2 is combined with the formwork panel 2A2 at the lower stage and the formwork panel 2A3 at the upper stage with respect to the central formwork panel 2A1 on one side. Similarly, on the other side of the mold panel 2, the mold panel 2B2 is combined at the lower stage with respect to the central mold panel 2B1, and the mold panel 2B3 is combined at the upper stage. In the formwork panel 2, the formwork panels adjacent to each other on the upper and lower sides of the left and right formwork panel sets are fitted with the fitting convex portions in the inner and outer regions of the upper and lower outer peripheral edges by the fitting portions 19 having the above-described configuration. It becomes a structure in which the concavity is combined. The formwork panels 2 are combined so as to form the same plane on the top, bottom, left and right by such a fitting structure.

  In addition, as for the formwork panel 2, the fitting part formed in the both edges of a length direction forms an outer fitting convex part and an outer fitting recessed part which are long in the up-down direction alternately, for example, and these outer fittings The inner fitting convex portion and the inner fitting concave portion having the same shape are alternately formed by shifting by one pitch with respect to the convex portion and the outer fitting concave portion. The formwork panel 2 can be easily combined in the left-right direction by the structure of the fitting portion.

  As described above, the mold panel 2 is connected to the base plate assembling part 13 as shown in FIGS. 1 and 3 with the mold panel 2B inverted up and down with respect to the mold panel 2A. The facing distance is maintained by the mechanism 3. As described above, the connecting mechanism 3 includes the plurality of web sets 4 and the plurality of base plates 6, and the web sets 4 are combined in an X shape by connecting the central portions as will be described in detail later. And the second web 5B as one set. The coupling mechanism 3 includes a web assembly 4 assembled between the inner side surfaces 11 facing the base plate assembly portion 13 to hold the formwork panel 2, and a base plate 6 assembled from the outer surface 12 to the base plate assembly portion 13 Hold set 4.

  In the connection mechanism 3, the same number of web sets 4 as the base plate assembling portions 13 are used for one set of formwork panels 2. The connecting mechanism 3 is also used by the web assembly 4 in common with the base plate assembly portion formed by the base plate assembly portion halves formed relative to both edges in the length direction of the formwork panel 2 as described above. The formwork panels 2 installed next to each other are held.

  The web 5 is made of a metal plate material such as stainless steel having high rust resistance and mechanical strength, and as shown in FIG. 5, the base 24 is inclined in the height direction and integrated with both ends of the base 24. The first base plate engaging portion 25 and the second base plate engaging portion 26 are formed. The web 5 has a thickness of about 3.2 mm, for example, and the base portion 24 is inclined at an angle of about 50 ° to about 55 ° so that the distance between the first base plate engaging portion 25 and the second base plate engaging portion 26 is as described above. The first formwork panel 2A and the second formwork panel 2B are formed with a facing distance, that is, with a length set to 180 mm. The base portion 24 is formed with a connecting hole 27 that is located in the central portion and penetrates in the thickness direction.

  The web 5 includes a portion in which the first base plate engaging portion 25 and the second base plate engaging portion 26 are symmetrical. Therefore, in the following description, the configuration of the first base plate engaging portion 25 will be described as a representative, and the description of the configuration on the second base plate engaging portion 26 side will be omitted by attaching the same reference numerals to the corresponding portions. As shown in FIG. 5, the first base plate engaging portion 25 includes a portion that is bent in the horizontal direction from the tip of the base portion 24, and includes a bumping portion 28, a fitting insertion portion 29, and an engaging groove 30. Composed.

  Specifically, the abutting portion 28 includes portions projecting from the upper edge portion and the lower edge portion of the base 24, and the first web insertion slit 15 and the second web insertion slit formed in the base plate assembly portion 13 described above. It is formed with a width larger than 16 slit lengths. The abutting portion 28 is shown in FIG. 3 when the web 5 is assembled to the formwork panel 2 by inserting the insertion portion 29 into the first web insertion slit 15 or the second web insertion slit 16 as described later. Thus, the outer edges 28A and 28B abut against the opening edges. The abutting portion 28 thereby defines the amount of insertion of the insertion portion 29 into the formwork panel 2.

  The insertion part 29 is a part integrally protruding toward the outside of the abutting part 28, and the slits of the first web insertion slit 15 and the second web insertion slit 16 formed in the base plate assembly part 13 described above. It is formed with a width substantially equal to the length and a length slightly larger than the thickness of the formwork panel 2. The insertion portion 29 is inserted into the first web insertion insertion slit 15 or the second web insertion insertion slit 16 opened in the inner surface 11 with respect to the mold panel 2 as will be described later. Projects to the outer surface 12.

  The engaging groove 30 is a groove in the height direction that opens at the upper edge of the fitting insertion portion 29, and is formed with a groove width substantially equal to the thickness of the base plate 6 to be described later in detail. The engagement groove 30 is formed in the insertion part 29 at a position slightly larger than the thickness of the mold panel 2 from the abutting part 28. The engagement groove 30 is inserted into the first web insertion / insertion slit 15 or the second web insertion / insertion slit 16 and the abutment portion 28 is abutted against the inner surface 11. Projects from the outer surface 12.

  In the web set 4, the first web 5 </ b> A and the second web 5 </ b> B are reversed, and are combined so that the respective connection holes 27 are communicated and stacked in the thickness direction. In the web set 4, the connection pin 31 is fitted into the connection hole 27, and the first web 5 </ b> A and the second web 5 </ b> B are combined so as to be rotatable around the axis at the center. In the web set 4, as shown in FIG. 3, the first web 5 </ b> A and the second web 5 </ b> B are opened in an X shape, and are combined with the formwork panel 2. Further, in the web set 4, the first web 5A and the second web 5B are closed to facilitate handling during transportation and to improve the efficiency of the space. The web set 4 may be integrated with the first web 5A and the second web 5B being opened in an X shape by, for example, inserting a caulking pin into the connecting hole 27 and performing caulking processing. Good.

  The web set 4 is formed as the same member as described above, and is constituted by the first web 5A and the second web 5B which are reversed and combined to reduce the cost due to the common use of the members and the mold 1 The efficiency of assembly work can also be improved. In the web set 4, the first web 5A and the second web 5B are formed as members having different specifications, and either one is a main member having high mechanical strength and the other is an auxiliary member in a simple shape. You may make it form.

  The base plate 6 is also made of a metal plate material such as stainless steel having high rust prevention and mechanical strength, and is more than the first base fitting slit 17 and the second base fitting slit 18 of the base plate assembly 13 described above. It consists of a vertically long rectangular plate-like member having a slightly short length and substantially the same width as the facing interval. The base plate 6 is a member having an overall length of about 320 mm, a width of about 49 mm, and a thickness of about 1.6 mm. The base plate 6 is assembled between the first mold frame panel 2A and the second mold frame panel 2B so as to have a predetermined facing distance. The first web 5A and the second web 5B of the web set 4 to be held are held with sufficient mechanical strength and are integrated with the outer surface 12 of the first mold panel 2A and the second mold panel 2B. To reinforce them.

  As shown in FIGS. 6 and 7, the base plate 6 is screwed with a mounting screw member 40 for mounting a formwork support (form tie) 41 to be described later from a mounting hole 32 formed at the center. A mounting nut member 33 is provided on the base plate 6 so that the mounting screw member 40, in other words, the formwork support 41 can be detachably attached to the outer surface by a simple operation and is firmly attached. The mounting nut member 33 is formed of a cylindrical member having an axial length slightly smaller than the depth of the nut fitting recess 14 on the mold panel 2 side, provided with an inner peripheral screw in the inner hole by a metal material. The mounting nut member 33 is provided integrally with the inner surface of the base plate 6 with the screw hole concentric with the mounting hole 32.

  In the state where the base plate 6 is assembled to the outer surface 12 of the mold panel 2, a mounting nut member 33 provided on the inner surface is fitted into the nut fitting recess 14 on the mold panel 2 side. By fitting the mounting nut member 33 into the nut fitting recess 14, the base plate 6 has a principal surface that is the same as the outer surface 12 with respect to the mold panel 2, and the combined state is maintained and the base plate 6 is moved. Regulated and combined.

  In the base plate 6, a first web engagement portion 34 and a second web engagement portion 35 are formed at symmetrical positions in the upper and lower regions sandwiching the attachment hole 32. The first web engaging portion 34 and the second web engaging portion 35 are respectively formed on the first base plate engaging portion 25 and the second base plate engaging portion 26 of the web 5 protruding from the outer surface 12 of the mold panel 2 described above. It is the part formed correspondingly. The first web engaging portion 34 and the second web engaging portion 35 have a notch width into which the first base plate engaging portion 25 and the second base plate engaging portion 26 are inserted, and these first base plate engaging portions. 25 and a slit in the height direction having a length larger than the height of the second base plate engagement portion 26.

  In the base plate 6, the first web engaging portion 34 and the second web engaging portion 35 are formed as the slits having the above-described shape, so that some misalignment occurs in the formwork panel 2 and the web set 4 to be combined. In addition, the first base plate engaging portion 25 and the second base plate engaging portion 26 of the web 5 are easily inserted and inserted. Needless to say, the first web engaging portion 34 and the second web engaging portion 35 are not limited to the shapes described above. For example, the first base plate engaging portion 25 and the second base plate engaging portion 26 of the web 5 are used. You may comprise by the notch part which open | released one side to the side so that may be inserted from the side.

  The base plate 6 is formed with a first engagement flange portion 36 and a second engagement flange portion 37 that are formed by bending at right angles along both side edge portions in the length direction. The 1st engagement flange part 36 and the 2nd engagement flange part 37 respond | correspond to the 1st base fitting slit 17 and the 2nd base fitting slit 18 which were formed in the baseplate assembly | attachment part 13 of the formwork panel 2 mentioned above, respectively. It is the site | part formed. As described above, the first engagement flange portion 36 and the second engagement flange portion 37 have a length slightly shorter than the slit lengths of the first base fitting slit 17 and the second base fitting slit 18 in the base plate 6. Therefore, the length is also slightly smaller than the slit lengths of the first base fitting slit 17 and the second base fitting slit 18.

  The base plate 6 is assembled to the base plate assembling portion 13 from the outer surface 12 of the base plate 6 to which the web set 4 is assembled, thereby integrating the web 5 of the web set 4 with the form panel 2. For example, the base plate 6 is relatively engaged with the first base fitting slit 17 and the second base fitting slit 18 of the mold panel 2 at lower portions of the first engagement flange portion 36 and the second engagement flange portion 37. In such a manner, it is combined with the formwork panel 2. In this state, the first web engaging portion 34 and the second web engaging portion 35 are opposed to the first base plate engaging portion 25 and the second opposing web 5 protruding from the outer surface 12 of the mold panel 2. It is positioned opposite to the base plate engaging portion 26.

  The base plate 6 has an upper portion toward the outer surface 12 side with the engaged first and second engaging flange portions 36 and 37, the first base fitting slit 17, and the second base fitting slit 18 as a guide. The first base plate engaging portion 25 and the second base plate engaging portion 26 of the web 5 are fitted and combined with the first web engaging portion 34 and the second web engaging portion 35. Is done. The base plate 6 is positioned and assembled to the outer surface 12 with respect to the mold panel 2 when the mounting nut member 33 is relatively engaged with the nut fitting recess 14.

  Accordingly, the base plate 6 holds a kind of punching action on the web 5 so that the web 5 does not fall off the formwork panel 2. The base plate 6 holds the mold frame 1 in an assembled state with the web 5, in other words, the web assembly 4, by sandwiching the mold panel 2 in the thickness direction between the base plate 6 and the abutting portion 28 of the web 5. .

  Needless to say, the base plate 6 is not limited to the above-described method of assembling the form plate 2 by the turning operation. The base plate 6 is slid along the formwork panel 2 using, for example, the first engagement flange portion 36 and the second engagement flange portion 37, the first base fitting slit 17, and the second base fitting slit 18 as a guide. It is also possible to assemble by. Further, the base plate 6 may be assembled by any other appropriate method so that the formwork panel 2 and each web set 4 are integrated.

  Further, the base plate 6 can cope with a case where, for example, it is necessary to add a reinforcing material or the like in the cavity 10 after assembling the mold 1 by assembling the base plate 6. The base plate 6 is moved upward along the outer side surface 12 of the formwork panel 2 by the procedure reverse to the assembling operation and is turned to release the holding state of the web 5 from the web set 4 to the formwork panel. 2 can be removed.

  In the formwork 1, the web which made the 1st web 5A and 2nd web 5B which combined the 1st formwork panel 2A and the 2nd formwork panel 2B which were comprised as mentioned above in X shape one set. Assembling is performed by configuring the cavity 10 with the inner surfaces facing each other at a predetermined interval by the plurality of coupling mechanisms 3 configured by the set 4, the first base plate 6A, and the second base plate 6B. In the assembly process of the mold 1, the coupling mechanism 3 is assembled in advance on one of the first mold panel 2 </ b> A or the second mold panel 2 </ b> B, for example, the second web 5 </ b> B in consideration of the efficiency of the bar arrangement work. Is called.

  In the assembly process of the mold 1, the plurality of web sets 4 are arranged side by side on the inner surface 11 </ b> B of the second mold panel 2 </ b> B so as to face the base plate assembly 13 </ b> B. The process of assembling the mold 1 involves the first base plate of the first web 5A in which each web set 4 is opposed to the first web insertion slit 15B or the second web insertion slit 16B with respect to the second mold panel 2B. The mating portion 25B and the second base plate engaging portion 26B of the second web 5B are fitted and inserted, and the respective fitting insertion portions 29 are projected from the base plate assembling portion 13B to the outer surface 12B and assembled.

  In the assembly process of the mold 1, the second base plate 6B is opposed to the first web engaging part 34B and the second web engaging part 35B with respect to the second mold panel 2B. The engaging portion 25B and the second base plate engaging portion 26B of the second web 5B are engaged and assembled. In the assembly process of the mold 1, the plurality of web sets 4 are thereby integrated in the longitudinal direction on the inner surface 11 </ b> B side with respect to the second mold panel 2 </ b> B.

  In the assembly process of the mold 1, a large number of second mold panels 2 </ b> B each integrating the web set 4 are arranged side by side on the base concrete 7 in which the vertical bars 8 </ b> A are erected. In the assembly process of the mold 1, a large number of second mold panels 2 </ b> B each having the web assembly 4 assembled by the above-described operation are installed along the pier 43 installed on the base concrete 7. In the assembly process of the mold 1, the adjacent second mold panel 2B abuts the fitting portion 19 formed opposite to the side edge in the length direction and fits the fitting convex portion and the fitting concave portion. The combination is performed by combining. The assembly process of the mold 1 is performed by assembling the web assembly 4 to the base plate assembly portion formed by abutting the base plate assembly portion halves formed on the opposite side edges when the second mold panel 2B is assembled. Is done.

  In the assembling process of the mold 1, a reinforcing bar set 8 is installed along the second mold panel 2 </ b> B arranged side by side in the length direction. The assembling process of the mold 1 can efficiently perform the bar-laying work by opening one side and securing a sufficient space through the transverse bar 8B from the configuration of the web set 4 described above.

  In the assembly process of the mold 1, the first mold panel 2 </ b> A is arranged side by side so as to face the second mold panel 2 </ b> B arranged in the length direction and arranged along the inner side surface 11 </ b> B. . In the assembling process of the mold 1, the first mold panel 2 </ b> A is also installed along the pier 43 installed on the base concrete 7 with a predetermined distance from the pier 43 on the second mold panel 2 </ b> B side. The In the assembly process of the mold 1, each first mold panel 2 </ b> A is placed opposite to each other with the web set 4 assembled to the opposing second mold panel 2 </ b> B facing the base plate assembly portion 13 </ b> A.

  In the assembly process of the mold 1, each web set 4 with respect to the first mold panel 2 </ b> A is associated with the first base plate of the first web 5 </ b> A facing the first web insertion slit 15 </ b> A or the second web insertion slit 16 </ b> A. The mating portion 25A and the second base plate engaging portion 26A of the second web 5B are fitted and inserted, and as shown in FIG. 8, each fitting insertion portion 29 is projected from the base plate assembling portion 13A to the outer surface 12A and assembled. The assembly process of the mold 1 is performed by assembling the first base plate 6A from the outer surface 12A side to the first mold panel 2A, and the first base plate 6A allows the web to the first mold panel 2A. Set 4 is fixed.

  In the assembling process of the mold 1, the first base plate 6 </ b> A forms the lower part of the first engagement flange 36 and the second engagement flange 37 as shown in FIG. 9 with respect to the first mold panel 2 </ b> A. The first base fitting slit 17 and the second base fitting slit 18 facing each other of the frame panel 2 are relatively engaged. In the assembling process of the mold 1, the second base plate engaging portion 26 </ b> A is inserted into the opposing second web engaging portion 35 </ b> A at this time. In the assembly process of the mold 1, as shown by the arrows in the figure, the upper part of the first base plate 6A is rotated to the first mold panel 2A side. In the assembly process of the mold 1, the first web engagement portion 34 </ b> A is opposed to the first base plate engagement portion 25 </ b> A, and the first base plate 6 </ b> A is assembled to the first mold panel 2 </ b> A. . In the assembly process of the mold 1, the web set 4 is fixed to the first mold panel 2 </ b> A via the first base plate 6 </ b> A, and the first mold is opposed to the second mold panel 2 </ b> B via the web set 4. A frame panel 2A is installed.

  The assembly process of the mold 1 is performed by assembling the web assembly 4 on each of the many first mold panels 2A by the above-described operation, and is adjacent to the base concrete 7 so as to face the second mold panel 2B. Each combination is performed. In the assembly process of the mold 1, the adjacent first mold panel 2A is brought into contact with the fitting part 19 formed opposite to the side edge in the length direction, and the fitting convex part and the fitting concave part are fitted. The combination is performed by combining. In the assembly process of the mold 1, the web assembly 4 is attached to the base plate assembly that is formed by abutting the base plate assembly halves formed on the opposite side edges when the first mold panel 2 </ b> A is assembled. Is assembled.

  The assembly process of the mold 1 is performed by combining the first mold panel 2A and the second mold panel 2B in the length direction on the base concrete 7 through the above-described operations. The second mold panel 2B is opposed to each other by a plurality of web sets 4 with a predetermined facing interval, and a first-stage mold 1A is formed which constitutes a cavity 10 for placing concrete between the opposing inner side surfaces 11. . In the process of assembling the mold 1, it is possible to assemble the mold 1 by a simple operation by using the first mold panel 2 </ b> A and the second mold panel 2 </ b> B that are lightweight and easy to handle. In the assembly process of the mold 1, work efficiency can be improved by performing bar arrangement with one mold panel 2 installed. In the assembly process of the mold 1, the second-stage mold 1 </ b> B may be assembled on the first-stage mold 1 </ b> A as necessary.

  Concrete is cast into the cavity 10 in the mold 1 assembled through the above assembly process, but the mold panel 2 against the pressure of the concrete cast in the same manner as a conventional general mold. A support structure is provided for holding. A mounting screw member 40 is attached to and detached from the mold plate 1 with respect to the base plate 6, and a mold supporting tool 41 conventionally used as a supporting structure is used interchangeably through the mounting screw member 40. As shown in FIG. 1, the formwork 1 is firmly held by a formwork supporter 41 along with the first formwork panel 2A and the second formwork panel 2B. Is done.

  In the mold 1, the mounting hole 32 is provided in the base plate 6 as described above, and the mounting nut member 33 is provided on the inner surface side corresponding to the mounting hole 32. In the mold 1, the base end side of the mounting nut member 33 is fixed to the base plate 6 by inserting a mounting screw member 40 into the mounting hole 32 from the outer surface and screwing into the mounting nut member 33. Let it protrude. The mold 1 can remove the mounting nut member 33 from the base plate 6 at the time of demolding described later.

  The formwork support 41 is composed of a socket, a form tie body, a clamper, and the like, although details are omitted since a conventionally known formwork support (form tie) is used. As for the formwork support 41, the socket is attached to and detached from the attachment screw member 40, and for example, the support material 42 that holds the formwork panel 2 on the foam tie body, for example, a combination of the vertical support material 42A and the horizontal support material 42B in a lattice shape, Then, the support member 42 is held in pressure contact with the base plate 6 by screwing the clamper into the foam tie body.

  The outline of the process of assembling the formwork support 41 to the formwork 1 will be described below. As shown in FIG. 11, the mold 1 is attached to the mounting nut member 33 with the mounting screw member 40 fitted into the mounting hole 32 from the outer surface 12 side of the base plate 6. It is assembled with protruding. In the mold 1, the mounting nut member 33 is provided on the base plate 6, so that the mounting screw member 40 can be easily attached / detached and firmly assembled.

  In the mold 1, a socket is screwed into an attachment screw member 40, and a foam tie body integrated with the socket projects from the outer surface 12 of the base plate 6 and is assembled. In the mold 1, as shown in FIGS. 1 and 11, the longitudinal support 42 </ b> A arranged on the outer surface of the mold panel 2 at a predetermined interval with respect to the length direction and the length direction. The lateral support members 42B arranged with a predetermined interval are assembled through the foam tie body. In the mold 1, when the clamper is screwed into the foam tie body, the lateral support material 42 </ b> B supported by the foam tie body is pressed to cooperate with the vertical support material 42 </ b> A and the outer surface of the mold panel 2. It is supported by the formwork support 41 by being pressed against.

  The concrete is placed in the cavity 10 on the mold 1 installed on the base concrete 7 through the above steps. In the formwork 1, the opposing space between the first formwork panel 2 </ b> A and the second formwork panel 2 </ b> B is set by the connecting mechanism 3 made of the web set 4 and the base plate 6 made of the first web 5 </ b> A and the second web 5 </ b> B having a simple structure. The cavity 10 is formed by holding. In the mold 1, a sufficient bar arrangement space is secured in the cavity 10 and the fluidity of the concrete is sufficiently maintained. In the mold 1, it is possible to use a vibrator for fastening concrete at the time of placing. In the mold 1, this eliminates the occurrence of junkers and forms a concrete structure with a good finish. In the formwork 1, the first formwork panel 2 </ b> A and the second formwork panel 2 </ b> B are firmly spaced from each other by the formwork support 41 provided together with the above-described connection mechanism 3 against the pressure of the placed concrete. And held.

  In the formwork 1, a concrete structure in which the first formwork panel 2 </ b> A and the second formwork panel 2 </ b> B are integrated as they are on the main surface of the concrete frame 9 without the need for demolding after a predetermined curing period. Form. In the concrete structure, the first form panel 2A and the second form panel 2B or the web set 4 have the reinforcing function of the concrete frame 9 together with the reinforcing bar set 8, and the mechanical strength is improved. In the concrete structure, the first formwork panel 2A and the second formwork panel 2B function as a heat insulating material, and it is possible to shorten the construction period and reduce the construction cost by eliminating the need to paste the heat insulating material. In addition to improvement, sound insulation, high airtightness, fire resistance, ventilation, durability, or earthquake resistance are improved.

  In the formwork 1, each formwork support 41 combined with the outer surface of the formwork panel 2 is removed. The formwork support 41 is removed from the mounting screw member 40 assembled to the base plate 6 of the socket provided with the foam tie body after the clamper is loosened and the support material 42 is removed. In the mold 1, the attachment screw member 40 is removed from the base plate 6. In the mold 1, the mounting nut member 33 is provided in the mounting hole 32 of the base plate 6, so that the conventional mold support 41 is used as it is and can be easily attached and detached to improve work efficiency. Figured.

  The present invention is not limited to the mold 1 shown as the embodiment described above, and various changes and substitutions can be made to the constituent elements without departing from the scope and spirit of the claims. It is.

  DESCRIPTION OF SYMBOLS 1 Formwork for concrete placement (formwork), 2 formwork panel, 3 connection mechanism, 4 web assembly, 5 web, 6 base plate, 9 concrete frame, 10 cavity, 11 inner side surface, 12 outer side surface, 13 base plate assembly Part, 14 nut fitting recessed part, 15 1st web fitting insertion slit, 16 2nd web fitting insertion slit, 17 1st base fitting slit, 18 2nd base fitting slit, 19 fitting part, 20 outer fitting convex Part, 21 outer fitting concave part, 22 inner fitting convex part, 23 inner fitting concave part, 24 beam part, 25 first base plate engaging part, 26 second base plate engaging part, 27 connecting hole, 28 abutting part, 29 fitting insertion site, 30 engaging groove, 32 mounting hole, 33 mounting nut member, 34 first web engaging portion, 35 second web engaging portion, 36 first engaging flange , 37 second engaging flange section, 40 mounting screw member, 41 Formwork 支保 instrument, 42 pre-supports

Claims (5)

A plurality of base plate assembly parts are formed side by side in the lengthwise direction at opposite positions of the respective outer surfaces, and a first web insertion slit and a second web insertion slit are formed in these base plate assembly parts, respectively. A first formwork panel and a second formwork panel made of foamed synthetic resin, which constitute a cavity for placing concrete between opposing inner surfaces by facing each other with a predetermined facing distance;
The first mold panel and the first web and the second web, which are combined in an X shape by connecting the central portions, are disposed in the cavity so as to face each of the base plate assembly portions. A plurality of web sets that hold the opposing spacing of the second formwork panel;
The first web and the second web that are assembled and opposed to the base plate assembling part of the first mold panel and the second mold panel are integrated with the first mold panel and the second mold panel, respectively. Including a plurality of first base plates and a plurality of second base plates
In the first web and the second web, the first web insertion slit or the first web insertion slit formed on both ends of the first web and the base plate assembly of the second mold panel or the second web, respectively. A first base plate engaging portion and a second base plate engaging portion that are inserted into the second web insertion slit and project to the outer surface are formed,
The first base plate and the second base plate project through the first web insertion slit or the second web insertion slit and protrude to the outer surface of the first form panel or the second form panel. A first web engaging portion and a second web engaging portion are formed opposite to the first base plate engaging portion and the second base plate engaging portion of the first web and the second web,
The first mold panel and the second mold panel are connected to the first web fitting slit or the second web fitting slit, and the first base plate engaging portion of the first web and the second web, and the second web fitting slit. The opposing space is maintained by configuring the cavity between the inner surfaces facing each other by the web set in which the second base plate engaging portion is inserted and combined,
The first base plate engaging portion and the second base plate engaging portion in which the first web and the second web of the web set protrude on the outer surfaces of the first mold panel and the second mold panel. A concrete casting mold that is held and combined by engaging the first web engaging portion and the second web engaging portion of the first base plate and the second base plate assembled to the base plate assembling portion. frame. The first formwork panel and the second formwork panel have a fitting portion formed on the outer peripheral edge portion, and the outer peripheral edge portions are brought into contact with each other by fitting the opposing fitting portions so that a plurality of sheets are vertically and horizontally Installed in combination with
The fitting portion has a fitting convex portion and a fitting concave portion having an opening size substantially equal to the fitting convex portion in each of the inner region and the outer region which are ½ of the panel thickness. The inner fitting portion and the outer fitting portion are alternately formed over the inner fitting portion, and the fitting convex portion and the fitting concave portion of the inner fitting portion and the outer fitting portion are opposed to each other. As shown in FIG.
The concrete placement form according to claim 1, which is combined vertically and horizontally with the top and bottom reversed. The first web and the second web are made of a metal plate material having a predetermined thickness, and a coupling portion is formed in the central portion, and the first base plate engagement portion and the second base plate engagement portion are formed at both ends. The same member that is formed and combined in an X shape by connecting the above-described connecting portions in an inverted state is used,
The formwork for concrete placement according to claim 1 or 2, which is coupled through the coupling portion that allows adjustment of a combination angle. The first base plate and the second base plate are configured so that the first web engaging portion and the second web engaging portion are more engaged than the first base plate engaging portion and the second base plate engaging portion, which are relatively engaged with each other. By being formed with a large slit length, the holding state of the first web or the second web can be released by moving within the range of the difference,
4. The detachment of the first form panel or the second form panel is performed by releasing the holding state of either the first web or the second web. The formwork for concrete placement as described in the item. In the first base plate and the second base plate, a through hole is formed at least approximately in the center in the length direction and penetrates in the thickness direction. The first mold panel and the second mold panel A mounting nut member is provided concentrically with the through hole on the opposite surface of
The formwork supporting tool for holding the outer surface of the formwork panel is assembled through an attachment screw member that is inserted from the through hole and screwed into the attachment nut member. The formwork for concrete placement as described in any one of the above.

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