JP2567805B2 - Method for constructing multi-lattice slab, forming form for multi-lattice beam used in the constructing method, fixing jig for parallel flap square timber, reinforcing bar frame arrangement method, break-away forming form for multi-lattice beam, and multi-lattice beam Fixing jig for removing mold - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forming form used for forming a multi-grating beam on a floor slab, a method for constructing a multi-lattice slab using the forming form, and a method for constructing the multi-lattice slab. Fixing jig for parallel flaps used, reinforcing bar frame arranging method used for its construction method, multi-lattice beam breakaway molding form used for its construction method, and multi-grid beam breakaway molding formwork Regarding the fixing jig for withdrawal.

[0002]

2. Description of the Related Art Conventional floor slabs are known which have a structure in which a large beam and a small beam are combined with a floor slab.

[0003]

However, in the conventional floor slab structure, due to the existence of the beam, the height of the floor includes a height which is unnecessary as a living space. There was a problem that more than one floor was wasted. Also, if the size of the room is changed at the time of extension and renovation, the beam will appear in the room, and the ceiling height will be reduced by that amount, which is also aesthetically unfavorable. In addition, in order to solve such a problem, there is one in which a small lattice-shaped beam is provided instead of the beam, but in this case, it takes time and effort to form the lattice, and The upper and lower bars of the lattice beam are arranged for each, and the lower bars are hung on the upper bars with hooks, but the number of them is large and it requires a great deal of labor, which increases costs. There is a problem that is becoming.

The present invention has been made by paying attention to the above problems, and it is possible to easily perform a formwork when forming a multi-lattice beam on a floor slab and to reduce the cost. Molded formwork for multi-lattice beams and the use of this formwork eliminates the useless space of small beams, reduces the ceiling height even if renovation is performed, and does not require labor for reinforcing bars.
A method of constructing a multi-lattice slab that does not impair the aesthetic appearance, a fixing jig for parallel flaps used in the method of constructing this multi-lattice slab, a reinforcing bar frame reinforcing method used in the method of constructing the multi-lattice slab, and the multi-lattice slab It is an object of the present invention to provide an escape mold forming frame for multi-lattice beams and a fixing jig for detaching the escape mold forming form for multi-lattice beams used in the construction method.

[0005]

In order to achieve the above object, in the method for constructing a multi-lattice slab according to claim 1, side forming parts are vertically provided around four sides of the rectangular ceiling forming part.
A flange portion is formed outward from the lower end of one of the side surface molding portions, and the flange portion is formed such that the bottom surfaces of both end portions coincide with the lower end edges of the side surface molding portion and both ends thereof. A method for constructing a multi-lattice slab using a molding frame for multi-lattice beams, in which the middle bottom surface excluding the bottom surface is formed so as to project downward from the lower end edge of the side surface molding portion, wherein at least two Forming a combined form in which the forming forms for multi-lattice beams are combined with the flange part outside, a large number of a pair of parallel flaps are erected between the skeleton walls, and fixed on the pair of parallel flaps. A long flat plate with a width is placed, and a large number of the above-mentioned connecting forms are laid vertically and horizontally between the long flat plates, and a number of steps are formed between the bottoms of both ends of the flange and the bottom of the middle part in the installed state. Abutting the side edges of the long flat plates so that they are laterally adjacent to each other between the long flat plates. The coupling form is positioned in the horizontal direction, and a long thin plate having a constant width is attached between the adjacent adjacent coupling forms in the vertical direction on the long flat plate, which is formed on the long flat plate and the long thin plate. The method of placing concrete after inserting the rebar frame in the space between the joining forms was adopted.

According to a second aspect of the present invention, there is provided a forming frame for a multi-lattice beam.
A forming frame for a multi-lattice beam used in the method for constructing a multi-lattice slab according to claim 1, wherein side surface molding portions are vertically provided around four sides of the rectangular ceiling molding portion, and the side surface molding portions are provided vertically. A flange portion is formed outward from the lower end of one side surface molding portion, and this flange portion is formed such that the bottom surfaces of both end portions are aligned with the lower end edges of the side surface molding portion, and the bottom surface of both end portions is removed. The bottom surface of the part is formed so as to project downward from the lower edge of the side molding part.

According to a third aspect of the present invention, there is provided a fixing jig for a parallel flap square material used in the method for constructing a multi-lattice slab according to the first aspect, wherein the parallel flap square material is integrally clamped from below. The parallel groove is provided with a connecting body having horizontal flange portions projecting at both outer side intermediate portions of the parallel butter beams, and the parallel grooves are formed at the same intervals as the parallel intervals of the parallel butter beams. We adopted a structure in which the groove depth of the parallel groove is half that of the flap.

In the method for arranging the reinforcing bar frame in the method for constructing a multi-lattice slab according to claim 4, a reinforcing bar frame is used in which only one vertex of one side of the lattice reinforcement continuous to the corrugation is connected by the main reinforcement, and the frame is used. In each of the longitudinal direction and the lateral direction of the space formed in a lattice shape, the reinforcing bars are arranged one by one in a state where the main reinforcing bars are arranged vertically and the lattice reinforcing bars are aligned with each other, and the main reinforcing bars in one direction are also arranged. By adopting different height positions for the main bars in the other direction with respect to each other, we adopted a method of intersecting the reinforcing bar frames.

According to a fifth aspect of the present invention, there is provided a multi-grating beam withdrawable mold form according to the second aspect, wherein the multi-grating beam has a lower end of a side face forming portion arranged on both sides of the flange portion. A configuration is adopted in which the edge is formed so as to project downward from the lower end edge of the flange portion to form a protruding edge portion.

According to a sixth aspect of the present invention, there is provided a fixing jig for withdrawal, which is a fixing jig for freely withdrawing the withdrawal mold for multi-grating beams according to the fifth aspect of the present invention after the concrete is placed. There are provided fixing portions that are detachably fitted to the upper surfaces of the two, and parallel vertical grooves that are detachably fitted to the projecting edges of the multi-lattice beam breakaway molds that are disposed on both upper surfaces of the fixing portions. ,
Moreover, a configuration is adopted in which a mounting surface for mounting a long flat plate is provided between the parallel vertical grooves.

[0011]

In the method of constructing a multi-lattice slab using the multi-lattice beam forming form of the present invention, the central portion of the slab having a large load uses a joint form which is a combination of two multi-lattice beam forming forms. The peripheral part of the slab with a small load has a larger number than that, for example, since it is possible to use a connecting form made by connecting four forming forms for the multi-lattice beam, the forming for the multi-lattice beam in units of two or four The molds are joined to form a joined form. At this time, in the unit of two, the flanges of the multi-grid beam forming form are joined to the outside, and in the unit of four, they are connected.

In addition, a large number of pairs of parallel flap square members are erected between the walls of the skeleton by supporting work, and a long flat plate having a constant width is placed on the pair of parallel flap square members. As a result, a large number of long flat plates are supported in parallel near the ceiling surface at regular intervals.

Then, a large number of the connecting molds are vertically and horizontally arranged between the long flat plates and are installed in a grid pattern. In this case, since a step portion is formed between the bottom surface of both ends and the bottom surface of the middle portion of the flange portion formed outward from the lower end of one side surface molding portion of the multi-lattice beam molding form, By bringing the stepped portion into contact with the side edges of the long flat plates, it is possible to laterally position the adjacent coupling molds between the long flat plates in the horizontal direction. In addition, a long thin plate having a constant width is attached between the coupling molds vertically adjacent to each other on the long flat plate.

Therefore, in this method for constructing a multi-lattice slab, the side forming portion of the multi-lattice beam forming frame forms a side surface of the beam.
The long flat plate and the long thin plate serve as a mold for forming the lower surface of the beam, and the rectangular ceiling molding portion serves as a form for forming the lower surface of the slab. And, since many long flat plates are supported in parallel at regular intervals, unlike the conventional method of constructing a multi-grid slab in which veneer plates are entirely laid, the amount of the long flat plates can be reduced and the labor required for that is reduced. Can be reduced.

Further, since at least two multi-lattice beam forming molds are combined to form a combined mold, and the combined molds are arranged vertically and horizontally and arranged in a lattice, the labor required for the arrangement can be reduced. When arranging this combined formwork, in order to bring the stepped portion formed on the flange portion into contact with the side edge of the long flat plate, the adjacent adjacent formwork should be positioned in the horizontal direction between the long flat plates. You can

Further, a fixing jig is used to hold the intervals of the parallel flap square members used in the method for constructing the multi-grid slab. In this case, since the necessary intervals are formed only by fitting the flaps into the parallel grooves, the flaps are arranged at appropriate intervals in consideration of the strength of the flaps. Then, a support is applied to the lower surface of the connected body to support it while providing horizontality. Further, for connecting the parallel flaps, fixing jigs having the same shape are arranged so as to face each other above and below the flaps.
First, fit the end of the parallel flap square bar into the parallel groove of the connector in the fixing jig placed on the lower side, and then insert the end of the parallel flap square bar into the parallel groove of the connector placed above. ,
The upper and lower connectors are joined together. In this case, since the parallel grooves are formed at the same intervals as the parallel intervals of the parallel flap squares, and the groove depth of the parallel grooves is formed at half of the flaps,
While maintaining the parallel spacing of the parallel flap square members, the parallel fastener square members can be sandwiched and connected from the top and bottom by the same fixing jig.

After the molding frame for the multi-grating beam is constructed as described above, a reinforcing bar frame is arranged at a predetermined position and concrete is poured from above to form a multi-grid beam on the lower surface. To form a floor slab. The reinforcing bar frame is provided with a lattice reinforcement for one main reinforcement, and is formed by the main reinforcement and is in a state where one of the lower chord members (upper end reinforcement and lower end reinforcement) is not present. In this case, since the lattice muscle side is in the shape of a mountain or a valley, the main muscles are arranged vertically in the vertical and horizontal directions of the space formed in a grid by the formwork, and the lattice muscles are aligned with each other. By arranging in this state, it is formed so as to have upper and lower chord members and lattices, and when arranging, the heights of the main bars in one direction are different from the heights of the main bars in the other direction. Can be crossed without interfering. After the construction of the rebar frame, concrete is poured into the frame to integrate it.

The long flat plate and the molding frame for multi-lattice beams used for the above-mentioned mold construction are buried and left as they are,
This is used as a base plate for the ceiling board.

Further, in the multi-lattice beam withdrawal-type molding form of the present invention, first, in the same manner as described above, two or four units of multi-lattice beam-with-removable die forming molds are combined to form an escape-type coupling form. Form. Then, the fixing portions of the releasing fixing jigs are fitted on the upper surfaces of the parallel flaps and arranged at appropriate intervals, and the multi-lattice beam releasing members of the detachable coupling form are placed in the parallel vertical grooves of the releasing fixing jigs. A large number of pieces are installed in a lattice form by arranging them vertically and horizontally while fitting the projecting edges provided on the mold forming frame. In addition, a long flat plate is placed on the placement surface of the withdrawal fixing jig, and a long thin plate is attached in a direction orthogonal to the long flat plate. In the thus assembled formwork, the removal-type connecting formwork is detachably fixed by the removal-fixing jig, so it is not necessary to fix it again to the long flat plate with nails or staples, so By removing the fixing jig for withdrawal after the casting, the withdrawal-type connecting form can be easily withdrawn.

[0020]

Embodiments of the present invention will now be described in detail with reference to the drawings. First, a forming frame for a multi-grating beam according to an embodiment will be described with reference to FIGS. 1 and 2. The multi-lattice beam molding frame 1 is formed by vertically arranging side surface molding portions 11 around four sides of a rectangular ceiling molding portion 10 so that a so-called rectangular bowl is laid down. The side surface molding portion 11 has a substantially vertical side surface portion 1 on the lower side portion.
1a is formed, and an inclined side surface portion 11b that is slightly inwardly inclined is formed in the upper portion, and the inclined side surface portion 11b can prevent bulkiness during stacking. Lattice-shaped reinforcing ribs 12 are formed on the inner surface of the rectangular ceiling molding portion 10 up to the upper ends of the side surface molding portions 11, and the reinforcing ribs 1 are vertically formed on the inner surface of the substantially vertical side surface portion 11.
3 are formed. These reinforcing ribs 12, 13 are
It is set to have sufficient strength against the load of the operator during construction of the formwork and the load after placing concrete. The molding frame 1 for multi-grating beams is formed of plastic in a left-right symmetrical manner with a flange portion, which will be described later, viewed in front. Further, the substantially vertical side surface portion 11a is provided with a connection hole 11d for connecting and fixing the multi-lattice beam molding forms 1 vertically and horizontally. In the drawing, 11e is a conduit insertion hole.

Further, a flange portion 14 is formed outward at the lower end of one of the side surface molding portions 11 mentioned above. The flange portion 14 has bottom surfaces 14 at both ends.
a and 14a are formed so as to coincide with the lower end edge 11c of the side surface molding portion 11, and the middle portion bottom surface 14b excluding the bottom surface portions 14a and 14a at both ends thereof is the lower end edge 11c of the side surface molding portion 11.
It is formed so as to project downward more than the bottom surface 1
A step portion 14c is formed between 4a and the middle portion bottom surface 14b.

Next, a method of constructing a form and a method of constructing a multi-lattice slab using the above-mentioned multi-lattice beam forming form will be described with reference to FIGS. As shown in FIG. 3, four multi-lattice beam molding forms 1 (at least two) are combined with the flange portion 14 on the outside to form a combined form A. For this connection, a tapping screw is inserted into the connection hole 11d formed in the substantially vertical side surface portion 11a and is fastened. Further, when the combined form A is formed by the four multi-lattice beam forming forms 1, a backing plate 15 is attached to the center of the combined form A and fastened with wood screws 15a. When the coupling frame A is formed in this way, the multi-lattice beam molding frame 1 is formed symmetrically, so that even if four coupling frames are coupled, one shape can be attached to any position. For this reason, the management at the time of manufacturing and the labor at the time of connection become very easy.

As shown in FIGS. 4, 5 and 11,
A pair of parallel flaps 2 and 2 are attached to the body wall 6 (shown in FIG. 10).
Many pairs are installed between them. The parallel flap square members 2 and 2 serve as a supporting member when a large number of the connecting molds A are arranged in a matrix in the vertical and horizontal directions, and a pair of the parallel flap square members 2 and 2 are provided.
A long flat plate 3 having a constant width is placed on the second flat plate 3,
A large number of the connecting molds A are arranged vertically and horizontally between the three and are installed in a grid pattern. Although a steel pipe flap is used as the flap square member, it is not limited to this.

The parallel flaps 2 and 2 are installed at intervals of the arrangement pitch in the lateral direction of the joint form A. The order of the erection work is, for example, that the parallel flap square members 2 and 2 are arranged at every two pitches of the lateral direction of the joint form A, and the parallel flap square members 2 and 2 are fixed to each other by a fixing jig 5b described later. Parallel grooves 51,
51 and 51. Each of the square flaps 2 and 2 is extended in the longitudinal direction while being fitted in the bottom surface 51 to fix both flap squares in a parallel state, while fixing jigs 5b are arranged at a predetermined pitch. Erection, and then, supporting flaps (not shown) so as to support the erected parallel flaps 2 and 2 from below.
Are extended in the lateral direction, and then, in the middle of the arrangement pitch of the above-mentioned installed parallel flap square members 2 and 2, while using the fixing jig 5b as described above, the parallel flap square members 2 and 2 are installed. By extending and erection in the vertical direction, the parallel flaps 2 and 2 are erected at intervals of the arrangement pitch in the horizontal direction of the joint form A. In this case, the parallel flaps 2 and 2 are supported by the lower surface of the fixing jig 5, and the support flaps are supported by the support 4 whose lower surface is directly erected on the floor. The support 4 is appropriately reinforced by braces.

The fixing jig 5 is used to hold the intervals between the flaps of wood and to add a plurality of them to form a predetermined length. In the case of adding the flaps of wood, the interval of the flaps is included. The description will be given with reference to FIGS. 8 and 9 by taking as an example the case where flaps are used for replenishment.
This fixing jig uses the fixing jigs 5 of the same shape in a one-to-one pair when connecting the parallel flaps 2 and 2. Therefore, the description will be made assuming that the connecting members having the same shape that sandwich the parallel flap square members 2 and 2 from above and below are 5a and 5b.

In the connecting bodies 5a and 5b, parallel grooves 51 and 51 are formed at the same intervals as the parallel intervals of the parallel flap squares 2 and 2, and the groove depth of the parallel groove 51 is formed in half of the flap 2. Further, horizontal flange portions 52, 52 are formed on both side edges thereof. In order to connect the parallel flaps 2 and 2, first, the end portions of the parallel flaps 2 and 2 are fitted into the parallel grooves 51 and 51 of the lower connector 5b, and the upper connector 5a is inserted from above. The parallel grooves 51, 51 are fitted into the ends of the parallel flaps 2, 2 to form upper and lower horizontal flange portions 52, 5
2 is connected by a screw or the like to connect the connecting bodies 5a and 5b. In this case, the parallel grooves 51, 51 are the parallel flaps 2,
The parallel groove 5 is formed at the same interval as the parallel groove 2.
Since the groove depths of 1, 51 are formed in half of the flaps 2, 2, the parallel flaps 2, 5 are connected by the upper and lower connecting bodies 5a, 5b while maintaining the parallel spacing of the parallel flaps 2, 2.
2 can be clamped and connected from above and below.

The ends of the parallel flaps 2 and 2 are joined to the body wall 6. The connecting structure will be described with reference to FIG. 10. At the ends of the parallel flaps 2 and 2, the spacers 21 are attached between the flaps 2 and 2 by long bolts 62. It has a structure in which the wall frame member 61 is connected by the L-shaped metal fitting 7.

Returning to FIG. 4, FIG. 5 and FIG. 11, the description will be continued. As described above, the joining form A is arranged vertically and horizontally between the long flat plates 3 and 3 placed on the parallel flap squares 2 and 2. Are arranged in a grid pattern in a line, and the stepped portion 14c between the bottom surface 14a of both ends of the flange portion 14 and the bottom surface 14b of the middle portion is brought into contact with the side edge of the long flat plate 3 in the erected state. The coupling formwork A, which is laterally adjacent between the long flat plates 3 and 3, is positioned in the lateral direction.

Further, a long thin plate 8 having a constant width is attached between the joining forms A, A which are vertically adjacent to each other on the long flat plate 3, and the long thin plates 8 adjoin vertically. The gap between the molds A and A is closed.

Therefore, in this formwork construction method, since a large number of long flat plates 3 are supported in parallel at regular intervals, unlike the conventional method for constructing a multi-lattice slab in which veneer plates are entirely laid, the long flat plates 3 are long. The amount of the flat plate 3 can be reduced and the material cost associated therewith can be reduced.

Further, since four multi-lattice beam molding forms 1 are combined to form a combined form A, which are arranged vertically and horizontally and arranged in a lattice, the labor required for the arrangement can be reduced. When disposing the coupling form A, the step portions 14c formed on the flange portion 14 are brought into contact with the side edges of the elongated flat plate 3, so that the elongated flat plates 3 and 3 are laterally adjacent to each other. The frames A, A can be positioned laterally. By the above procedure, the formwork for constructing the multi-lattice slab can be constructed while significantly saving the members such as the plywood plate.

Next, after the forming frame 1 for the multi-grating beam is constructed as described above, reinforcing bars are arranged at predetermined positions. In this case, as shown in FIG. A reinforcing bar frame 9 is used which is formed by welding a lattice-shaped continuous line 91 to the (upper end line or the lower end line) 90 and which is continuous in a corrugated form. For example, as shown in FIGS. 5 and 6, the reinforcing bar frame 9 is laid out in such a manner that, as shown in FIGS.
Reinforcing bar frames 9 (indicated by 9A as the first assembling) are vertically extended through the lower part of the space with the lattice muscles 91 facing upward, and then the vertically adjacent connecting form A, Reinforcing bar frames 9 (also indicated by 9B as the second part) are laterally extended through the lower part between A with the lattice muscles 91 facing upward, and then the horizontally adjacent adjoining form A , A with the lattice muscles 91 facing downward in the upper part between the
9C as the second one) extending in the vertical direction respectively, and then, with the lattice reinforcement 91 facing downward on the upper part between the vertically adjacent coupling forms A, A, the reinforcing bar frame 9 (also the fourth (Indicated by 9D as the second) is extended in the lateral direction (in this case, the troughs of the lattice muscles are arranged at the intersections, respectively), whereby, between the joint forms A and A, The upper and lower two reinforcing bar frames 9 and 9 can be arranged in a grid pattern. Further, the reinforcing bar frame 92 is also arranged between the multi-grid beam forming molds 1 and 1 which form the combined mold A.

After the reinforcing bar frame 9 has been laid out as described above, concrete is poured from above to form a floor slab having a multi-grating beam formed on its lower surface. At this time, the long flat plate 3 used for formwork construction
And, the molding frame 1 for multi-lattice beams is left as it is, and is used as a base plate for a ceiling board or the like.
It can also be demolded. In addition, a gap 16 is formed at the center of the bottom surface of the coupling form A by the bottom surfaces 14a, 14a of both ends of the flange portion 14, and this gap 16 can be used as a wiring space for electric wires, for example. .

Next, the removal-type molding frame 100 for multi-grid beams and the removal-type fixing jig 500 shown in FIG. 12 will be described.
Since the parts other than this figure are the same as the above-mentioned multi-grid beam forming frame 1 and the fixing jig, the description thereof will be omitted.

The removal mold 100 for the multi-grating beam is
A lower end edge of a substantially vertical side surface portion 101a corresponding to a substantially vertical side surface portion in a side surface forming portion arranged on both sides of the flange portion of the multi-grid beam forming frame 1 is projected downward from a lower end edge of the flange portion 104. The formed protruding edge portion 101b is provided.

The break-away type fixing jig 500 comprises a downward groove-shaped fixing portion 501 which is detachably fitted on the upper surfaces of the parallel buttered square members 2 and 2, and the multi-grid on both upper surfaces of the fixing portion 501. Projection edge portion 101b of breakaway molding frame 100 for beam
Is provided with parallel vertical grooves 502, 502 for detachably fitting, and a mounting surface 503 for mounting the long flat plate 300 is provided between the parallel vertical grooves 502, 502.

When constructing the multi-lattice beam breakaway molding mold 100, first, the multi-grid beam breakaway molding mold 10 is constructed.
A breakage-type coupling form, in which two or four 0s are coupled, is provided. Then, the break-away type fixing jig 500 is placed at the construction position of the break-away type joining mold, and the parallel flaps 2 and 2 are arranged at the interval pitch of the projecting edge portions 101b, 101b, ... Fit it on the top. On top of this, a breakaway joint form is arranged, and the respective projecting edge portions 101b, 10b
1b, ... Are inserted in the parallel vertical grooves 502, 502 ,. After this (or may be before), the long flat plate 300 is placed on the placement surface 503, and the long thin plate is provided in the same direction as the above in the same manner as above to construct the formwork for the multi-grid beam. You can

After this formwork construction, the reinforcing bar frame is laid out and concrete is poured in the same manner as described above. After the concrete is cured, first, by removing the parallel flaps 2 and 2, the releasable-type fixing jig 500 and the releasable-type coupled form can be removed downward.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment.

[0040]

As described above, in the forming mold for multi-grating beams and the method for constructing a multi-grid slab using this forming mold of the present invention, the connecting form is installed between the long flat plates. Therefore, unlike the conventional method for constructing a multi-grid slab in which the veneer plate is entirely laid, the effect that the amount of the long flat plate can be reduced and the labor involved therewith can be reduced.

Further, since the connecting molds, which are formed by connecting the multi-lattice beam forming molds, are arranged vertically and horizontally and arranged in a grid pattern, compared to the case where the multi-grid beam forming molds are arranged one by one. The time and effort required for installation can be reduced, and the step formed on the flange is brought into contact with the side edge of the long flat plate when arranging this combined form, so the combined form can be easily positioned in the lateral direction. The effect of being able to do is obtained. Since all the strength is distributed and distributed by low-grating multi-grating beams, the beam heights can be reduced by eliminating the need for beam beams that form useless spaces. The height is not lowered, and the effect of not impairing the aesthetic appearance can be obtained.

Further, in the jig for fixing the parallel flap square pieces used in the method of constructing the multi-lattice slab, the parallel spacing of the parallel flap square pieces can be achieved by a simple work of sandwiching the parallel flap square pieces by the upper and lower connecting bodies. It is possible to obtain an effect that the connection can be surely made while maintaining the above.

Since the reinforcing bar frame in which only the vertices on one side of the lattice muscles are connected by the main bars is provided in advance, it is possible to easily form a reinforcing bar structure in which the main bars are arranged above and below, so that the number of reinforcing bars is large. Even in such a case, it is possible to obtain the effect that the cost can be reduced without the trouble.

The use of the removal type molding frame for multi-grid beams and the removal type fixing jig allows both of them to be removed after curing concrete, so that they can be reused and the cost can be reduced. Is obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a molding frame for a multi-lattice beam according to an embodiment.

FIG. 2 is a plan view showing a molding frame for a multi-lattice beam according to an embodiment.

FIG. 3 is a plan view of a combined form used in the method for constructing a multi-grating slab according to an embodiment.

FIG. 4 is a plan view showing a working state of a method for constructing a multi-grating slab of an example.

FIG. 5 is a cross-sectional view showing a working state of a method for constructing a multi-grating slab of an example.

FIG. 6 is a cross-sectional view showing a working state of a method for constructing a multi-grating slab of an example.

FIG. 7 is a perspective view showing a construction state of a method for constructing a multi-grating slab according to an embodiment.

FIG. 8 is a perspective view showing a fixing jig of the embodiment.

FIG. 9 is a cross-sectional view of a connection structure using the fixing jig of the example.

FIG. 10 is a perspective view showing an end joining structure of parallel flaps.

FIG. 11 is a side view of a reinforcing bar frame.

FIG. 12 is a cross-sectional view showing a state in which a breakaway mold for multi-grating beam and a breakaway fixture are installed.

[Explanation of symbols]

 1 Multi-grating Beam Forming Form 10 Square Ceiling Forming Part 11 Side Forming Part 14a Both End Bottoms 14b Middle Part Bottom 14c Step Part 2 Parallel Butter Square Bar 3 Long Flat Plate 5a Coupling 5b Coupling 51 Parallel Grooves 8 Long Thin plate A Bonding form 9 Reinforcing bar form 100 Releasing mold forming form for multi-grid beams 101a Substantial vertical surface part of escape forming forming form for multi-grid beams 101b Projection edge of escape forming form for multi-grid beams 104 Multi-grid beam Flange part of the escape-type molding frame for use 500 Fixing-type fixing jig 501 Fixing part of the releasing-type fixing jig 502 Parallel groove of the releasing-type fixing jig 503 Mounting surface of the releasing-type fixing jig

 ─────────────────────────────────────────────────── --Continued from the front page (54) [Title of Invention] Method of constructing multi-lattice slab and forming lattice for multi-lattice beam used in the method of construction, fixture for fixing parallel flap squares, method of rebar reinforcement , Removable Mold Form for Multi-lattice Beam, and Fixing Fixture for Retractable Mold Form for Multi-lattice Beam

Claims (6)

(57) [Claims] 1. A side surface molding part is vertically provided around four sides of a rectangular ceiling molding part, and a flange part is formed outward from a lower end of one side surface molding part of the side surface molding part. Is a multi-lattice structure in which the bottom surfaces of both end parts are formed to coincide with the lower edges of the side surface molding part, and the middle part bottom surface excluding the bottom surfaces of both end parts projects downward from the lower end edge of the side surface molding part. A method of constructing a multi-lattice slab using a beam forming mold, comprising forming a combined form by connecting at least two of the multi-lattice beam forming forms with their flanges facing outward, and forming a pair of parallel A large number of pairs of flaps are laid between the walls of the skeleton, and a long flat plate with a constant width is placed on the pair of parallel flaps, and the connecting forms are arranged vertically and horizontally in a grid pattern. A large number of bridges are erected, and in the erected state, the bottom surface of both ends of the flange and the middle section The step portions with the surfaces are brought into contact with the side edges of the long flat plates to horizontally position the adjoining connecting forms between the long flat plates, and the adjoining vertically adjoining joints on the long flat plates. Attaching a long thin plate with a constant width between the molds, after inserting the reinforcing bar frame in the space between the joining forms formed on the attachment of the long flat plate and the long thin plate, after placing concrete A method of constructing a characteristic multi-grid slab. 2. A forming mold for a multi-lattice beam used in the method for constructing a multi-lattice slab according to claim 1, wherein side face forming parts are vertically provided around four sides of the rectangular ceiling forming part, A flange portion is formed outward from the lower end of the side surface molding portion of one of the molding portions. The flange portion is formed such that the bottom surfaces of both ends coincide with the lower edges of the side surface molding portion, and the bottom surfaces of both end portions are formed. A forming mold for a multi-grating beam, characterized in that the bottom of the middle part excluding the above is formed so as to project downward from the lower end edge of the side forming part. 3. A jig for fixing parallel butter beams used in the method for constructing a multi-lattice slab according to claim 1, wherein the parallel butter plates have parallel grooves for integrally sandwiching the parallel butter beams from below. The rectangular parallelepiped is provided with a connecting body having horizontal flange portions which are located at both outer side intermediate portions of the square bars, and the parallel grooves are formed at the same intervals as the parallel intervals of the parallel butter bars. Fixing jig for parallel flaps, which is formed in half of the square bar. 4. A method for arranging a reinforcing bar frame used in the method for constructing a multi-lattice slab according to claim 1, wherein a reinforcing bar frame is formed by connecting only apexes on one side of a lattice continuous continuous corrugation with a main bar. Use, and arrange the reinforcing bar frames one by one in the vertical and horizontal directions of the space formed in a grid by the formwork, with the main reinforcements arranged vertically and the lattice reinforcements aligned. At the same time, a reinforcing bar frame arrangement method is characterized in that the reinforcing bars are crossed by making the height positions of the main bars in the other direction different from the height positions of the main bars in the other direction. 5. The forming frame for a multi-grating beam according to claim 2, wherein the lower end edges of the side surface forming portions arranged on both sides of the flange portion are made to project downward from the lower end edge of the flange portion. A forming mold for a multi-lattice beam, characterized in that a projecting edge portion is formed. 6. A fixing jig for freely removing the multi-lattice beam breakaway formwork of claim 5 after concrete placement, which is detachably fitted to the upper surfaces of a pair of parallel flap square members. A fixing portion and parallel vertical grooves, which are disposed on the upper surfaces of both sides of the fixing portion and are detachably fitted to the projecting edge portions of the multi-grid beam breakaway mold, are provided between the parallel vertical grooves. A fixing jig for breaking off a multi-grid beam breaking mold for molding, which is characterized in that a mounting surface for mounting a long flat plate is provided.