JP2008202389A - Concrete formwork - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete formwork capable of eliminating temporary materials such as steel form ties or pipes when installing metal lath thereby permitting to use concrete surfaces as final finish immediately after the completion of concrete placement or permitting to immediately apply mortar or the like to the concrete surface as a final finish material. <P>SOLUTION: This concrete formwork comprises rib laths erected from a floor surface and separators for rib laths erected from a floor surface for maintaining the same interval between the rib laths. The rib laths are made as meshed steel plates, or at least one vertical bar is used for each separator for the rib laths. A post-type separator is welded in such a manner that a plurality of horizontal bars with predetermined tip ends bent are welded at equal intervals and then rib laths are contacted to or fitted to a portion bent of horizontal bars of the post type separator, and by this configuration, the temporary materials such as end sleeper pipes can be omitted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a concrete formwork for placing concrete, and more particularly to a lath concrete formwork using rib laths and mesh-like steel plates as scallops.

  A lath mold using rib lath or metal lath instead of plywood is known as a slat used for a concrete casting mold. No. 2002-138664 and JP-A-2005-163320 relating to the applicant's invention.

  The technique disclosed in Japanese Patent Application Laid-Open No. 8-277605 relates to the name of the invention “Las formwork method and lath formwork slats”, and “the weight reduction and material cost that are the advantages of the slats using lath nets” The construction method has been improved and the workability has been improved so that the concrete can be placed on the slab part at the same time as the beam part and wall part by strengthening the rigidity when built as a formwork while taking advantage of the reduction of As a means to solve this problem, a projecting strut is used, which uses a weir plate integrally formed with a projecting strut portion having a substantially U-shaped cross section protruding outward and a lath net portion. Concrete with the lateral end thick fixed to the outer surface of the projecting end surface that protrudes to the outside of the part, the formwork is built, the flat deck is placed on the slats, and the load is supported by the convex struts By placing the beam, wall and slab It is "configured to be pouring at the same time.

  The technology disclosed in Japanese Patent Application Laid-Open No. 2002-138664 relates to the name of the invention “Separator holding device and lath formwork using the same”, and “a lath formwork with high accuracy and excellent durability is inexpensive. As a means for solving this problem, the “separator holding device is made of a synthetic resin having electrical insulation and toughness, and has a belt-shaped reinforcing bar mounting portion and a notch. The separator mounting portion is provided with a through hole through which the belt-shaped reinforcing bar mounting portion is passed. The separator holding device can be used by winding it in contact with it, biting it into the through hole through the reinforcing bar mounting part, and fixing the reinforcing bar mounting part to the separator mounting part by contact with the corner of the through hole. It is fixed to the muscle. The separator holding device is fixed by tipping the rebar, fit the separator in the separator attachment portion ring, and with that build a lath mold ".

And the technique disclosed in Japanese Patent Application Laid-Open No. 2005-163320 relating to the applicant's invention relates to the name of the invention “Method of fixing a steel mesh formwork material and clip fastening fixture used for the fixing”, “ When building a concrete frame using mesh formwork, the problem was to be able to easily and firmly fix the mesh formwork to the strut members placed inside the concrete form. As a means to do this, “a concrete material is placed on a steel mesh frame material having a mesh that supports and frame at the surface layer position of the concrete frame, and an integral concrete frame is constructed together with the mesh frame material. The rib member formed in the mesh-type frame material is interposed between the reinforcing bar member, the angle member, the truss frame, and the like arranged in the mesh frame member by the fixing means. To fix the mesh frame material, it is driven from the outside into the rib portion of the mesh frame material, and the central locking part and the central locking part are fitted and fixed to the reinforcing bar material which is a strut member disposed inside. The clip fastening fixture provided with the holding piece portion 8 having the fitting notch portion extending in a bifurcated shape from the portion is used.
JP-A-8-277605 JP 2002-138664 A JP 2005-163320 A

However, the techniques disclosed in Japanese Patent Laid-Open Nos. 8-277605 and 2002-138664 use a temporary material such as a foam tie or a thick pipe when assembling the lath formwork. Of course, after placing the concrete, it is necessary to disassemble the temporary material after a predetermined concrete curing period has elapsed, and in the technique disclosed in Japanese Patent Laid-Open No. 2002-138664, the lath net is integrated. Since the convex column portion thus formed protrudes from the concrete surface, if the concrete surface is finished with mortar or the like, the convex column portion may become an obstacle.
Further, the technique disclosed in Japanese Patent Application Laid-Open No. 2005-163320 is disclosed in Japanese Patent Application Laid-Open No. 2002-138664, although temporary materials such as foam ties and end pipes are not used when assembling the lath formwork. Since the rib portion protrudes from the concrete surface in the same manner as in the above technique, if the concrete surface is finished with mortar or the like, this rib portion may become an obstacle.

  Therefore, the present invention eliminates the need for temporary materials such as foam ties and thick pipes when assembling the lath formwork, and after placing the concrete, the concrete surface is finished as it is, or the concrete surface is finished with mortar, etc. It aims at providing the concrete formwork which can be.

A concrete formwork according to claim 1 of the present invention comprises a slat standing from the floor and a slat separator that keeps the spacing between the slats, and the slat is a rib lath or mesh steel plate. The barrier plate separator is welded to at least one longitudinal streak so that a plurality of transverse streaks having a predetermined coplanar shape are evenly spaced and substantially coincide with each other in a planar position. A column-shaped separator that extends substantially horizontally so as to be orthogonal to the plate and at least one end is bent at a right angle or an acute angle in the horizontal direction or the vertical direction in the vicinity of the plate, and a bent portion of a horizontal stripe of the column-type separator The slats are fixed in contact with or fitted to each other, and the column separators are erected at a predetermined interval from the floor surface.
The floor surface means a permanent floor surface such as a slab or a temporary floor surface such as a floor formwork, and the mesh steel plate includes a metal lath, an expanded metal, and a punching metal. Further, the fixing includes welding by welding, binding by an annealed iron wire (binding wire), fastening by caulking a steel material, and the like.
A concrete mold according to claim 2 of the present application is the concrete mold according to claim 1, wherein the rib lath of the slat plate or the mesh steel plate of the mesh is approximately 0.5 mm to approximately 2.3 mm. The vertical stripes and the horizontal stripes of the separator for the siding plate are about 5 mmφ to about 6 mmφ.
And the concrete formwork which concerns on this-application Claim 3 is a concrete formwork of Claim 1 or Claim 2, Comprising: Among the vertical stripes of the said column-type separator, the horizontal stripe of this column-type separator was bent. When the vertical reinforcing bar closest to the part is brought into contact with the horizontal reinforcing bar constituting the structural reinforcing bar and the structural reinforcing bar is assembled, the concrete covering thickness of the structural reinforcing bar is equal to the specified thickness. It is the position which becomes.
The structural reinforcing bar is the reinforcing bar that constitutes the reinforced concrete that is separate from the vertical and horizontal reinforcing bars that make up the columnar separator, and the specified thickness is the concrete covering thickness of the reinforcing bar specified in the specifications, etc. Say.
Furthermore, the concrete formwork according to claim 4 of the present application is the concrete formwork according to claim 1 to claim 3, wherein the distance between the horizontal stripes of the columnar separator is the distance between the ribs of the rib lath or the mesh. It is characterized by being approximately 80 mm to approximately 150 mm which coincides with an integral multiple of the mesh interval of the mesh steel sheet.
A concrete form according to claim 5 of the present invention is the concrete form according to claim 1 to claim 4, wherein a predetermined interval provided upright from the floor surface of the plurality of columnar separators is approximately. It is characterized by being 400 mm to approximately 600 mm.
And the concrete formwork which concerns on this-application Claim 6 is a concrete formwork of Claims 1 thru | or 5, Comprising: The said sill board consists of a pair of slats installed facing, The said pillar type | mold Both ends of the transverse stripe of the separator are bent at a right angle or an acute angle in a horizontal direction or a vertical direction, and each of the pair of slats is fixed to a bent portion at both ends of the transverse stripe of the columnar separator. .
Furthermore, the concrete mold according to claim 7 of the present application is the concrete mold according to claim 6, wherein the slat is a rib lath, and the rib lath rib is installed in a horizontal direction, and the column separator Both ends of the horizontal stripes of the ribs are bent at an acute angle in the horizontal direction or the vertical direction, and the interval between the ribs of the rib lath and the interval of the horizontal stripes of the columnar separator are the same, and the columnar separator that contacts the ribs and the ribs It is characterized in that the bent portion of the transverse muscle of the tie is fixed.
A concrete form according to claim 8 of the present application is the concrete form according to claim 6, wherein the slats are rectangular mesh steel plates, and the edges of the long sides on both sides are substantially perpendicular. The long side which is provided with a bent edge portion and is fitted with the mesh of the bent edge portion 21 of the siding plate 11 fitted to the tip of the horizontal stripe 43 of the columnar separator 31 is vertical and the direction of the bent edge Are arranged facing the column separator, and both ends of the horizontal stripes of the column separator are bent at a right angle in the horizontal direction, and the interval between the plurality of the column separators standing from the floor surface is spaced from the floor plate. The tip of the columnar separator that is bent at a right angle fits into the mesh of the bent edge of the swash plate to fix the swash plate, and adjacent to the stake. The bent edges that contact each other between the plates In is fixed in a spot shape, and characterized in that.
It should be noted that the fact that the crest is fixed by fitting into the mesh at the bent edge means that the tip of the horizontal stripe of the column separator is relatively loosely fitted into the mesh, and is fixed in a spot shape. Means a state of being fixed, such as binding or welding.
And the concrete formwork which concerns on this-application Claim 9 is a concrete formwork of Claim 6, Comprising: The said siding board is a mesh-form steel plate of a rectangular net | network, and the long side of both sides becomes a perpendicular direction The both ends of the horizontal stripes of the columnar separator are bent at right angles or acute angles in the horizontal direction, and the interval between the columnar separators standing from the floor surface is the length of the short side of the bottom plate The portion of the columnar separator that is substantially coincident and that is in contact with the mesh of the columnar separator is bent at a right angle or an acute angle, and the mesh is fixed, and the long sides of the adjacent plates that are in contact with each other are predetermined. It is characterized by being fixed in a spot shape at intervals of.
Furthermore, the concrete formwork according to claim 10 of the present invention is the concrete formwork according to any one of claims 1 to 5, wherein the siding plate is installed facing a predetermined wall surface, and a horizontal stripe of the columnar separator is provided. One end of the columnar separator is bent at a right angle or an acute angle in the horizontal direction or the vertical direction, and the other end of the horizontal stripe of the columnar separator is connected and fixed to the predetermined wall surface. It is characterized in that it is fixed to the bent part.
In addition, the predetermined wall surface here means a wall surface other than a siding plate such as a retaining wall surface or a concrete wall surface, and that the other end of the horizontal bar of the separator is connected and fixed is, for example, to an anchor of the retaining wall surface. It refers to the case where it is welded directly or indirectly.
A concrete mold according to claim 11 of the present application is the concrete mold according to claim 10, wherein the slats are rib laths, and the rib lath ribs are installed in a horizontal direction, and the column separator One end of the horizontal stripe is bent at an acute angle in the horizontal direction or the vertical direction, and the interval between the ribs of the rib lath is the same as the interval between the horizontal stripes of the column separator, and the column separator is in contact with the rib and the rib. It is characterized in that the bent portion of the transverse muscle of the tie is fixed.
The concrete form according to claim 12 of the present application is the concrete form according to claim 10, wherein the slats are rectangular mesh steel plates, and the edges of the long sides on both sides are substantially perpendicular. It is provided with a bent edge portion that is bent, and the long side is set in the vertical direction and the direction of the bent edge is set toward the column separator, and one end of the horizontal stripe of the column separator is bent at a right angle in the horizontal direction. And the interval between the plurality of columnar separators erected from the floor surface substantially coincides with the length of the short side of the slats, and the tips bent at right angles to the horizontal stripes of the columnar separators It is characterized by being fitted to the mesh of the bent edge portion of the plate and fixing the dam plate, and the bent edge portions that contact each other of the adjacent dam plates are fixed in a spot shape at a predetermined interval. .
Furthermore, the concrete formwork according to claim 13 of the present application is the concrete formwork according to claim 10, wherein the siding plate is a rectangular mesh steel plate and the long sides on both sides are in the vertical direction. One end of the horizontal stripe of the columnar separator is bent at a right angle or an acute angle in the horizontal direction, and the interval between the plurality of columnar separators erected from the floor is the length of the short side of the bottom plate The portion of the columnar separator that is substantially coincident and that is in contact with the mesh of the columnar separator is bent at a right angle or an acute angle, and the mesh is fixed, and the long sides of the adjacent plates that are in contact with each other are predetermined. It is characterized by being fixed in a spot shape at intervals of.

The invention according to each claim of the present application has the following effects by the above configuration.
(1) The present invention uses rib lath or mesh-like steel plates as the slats, and the slats are fixed to columnar separators erected from the floor surface. Temporary materials such as foam ties and end pipes are not used other than separators. For this reason, the formwork dismantling work after concrete placement is unnecessary, and the process can be shortened.
(2) The position of the vertical bars of the column separator is such that when the horizontal bars constituting the structural reinforcing bars are brought into contact with the vertical bars, the structural reinforcing bars have a prescribed concrete covering thickness. For example, a columnar separator is temporarily fixed at a predetermined interval from the floor surface, a structural horizontal stripe is brought into contact with both sides of the column separator, and a structural vertical stripe is brought into contact with the structural horizontal stripe Once assembled, the wall bars can be assembled very easily. That is, the column type separator can maintain the interval between the structural reinforcing bars and ensure a specified concrete covering thickness.
(3) The rib of the rib lath is directly fixed to the bent portion of the horizontal separator of the column separator, and the bent portion of the horizontal separator of the column separator contacting the mesh of the mesh steel plate is fixed directly, or Because the direction of the bent edge of the mesh of the steel plate is oriented toward the column separator, the concrete surface after concrete placement is finished as it is, or the concrete surface is finished directly with mortar, etc. Is possible.
(4) Since the bent edges are provided on both sides of the mesh steel plate, the bending resistance of the mesh steel plate of the mesh increases, and the adjacent mesh steel plates of the mesh mesh are in contact with each other. Since the edges are fixed to each other in a spot shape at a predetermined interval, the bending of the central portion of the mesh steel plate due to the concrete placement in plan view is reduced. Therefore, an accurate concrete structure can be obtained.

Examples 1 to 3 according to the best mode for carrying out the present invention will be described with reference to FIGS.
In addition, FIG. 1 is a front view of the slats used for the concrete formwork which concerns on Example 1 and Example 2, FIG. 2 is II-II arrow sectional drawing (plane cross section) of Example 1 in FIG. 3 is a sectional view (longitudinal sectional view) taken along the line III-III of Example 1 in FIG. 1, and FIG. 4 is an LV of Example 2 and a modification of Example 2 in FIG. FIG. 4A is a cross-sectional view (planar cross-sectional view) taken along the arrow -lV, FIG. 4A is a cross-sectional view taken along the lV-lV arrow (planar cross-sectional view) of Example 2, and FIG. FIG. 5 is a cross-sectional view (planar cross-sectional view) taken along the arrow lV-lV of FIG. 1, FIG. 5 is a cross-sectional view (vertical cross-sectional view) taken along the line V-V of FIG. FIG. 7 is a plan sectional view of a concrete mold according to Example 3, and FIG. 7 is a longitudinal sectional view of the concrete mold according to Example 3. FIG.

  In FIG. 1 thru | or FIG. 7, the code | symbol 11 is the slat used for the concrete formwork of Example 1 and Example 2, the code | symbol 13 is the slate used for the concrete formwork of Example 3, the code | symbol 21 is a bending edge part, Reference numeral 23 denotes a rib, reference numeral 31 denotes a column separator used for the concrete mold of Example 1, reference numeral 32 denotes a column separator used for the concrete mold of Example 2, and reference numeral 33 denotes a concrete mold of Example 3. Column separator to be used, reference numeral 41 is a vertical stripe of the column separator, reference numeral 43 is a horizontal stripe of the column separator, reference numeral 45 is a binding line, reference numeral 51 is a vertical stripe for structure, and reference numeral 53 is a horizontal stripe for structure. .

  First, the concrete formwork according to the first embodiment will be described with reference to FIGS.

  The concrete formwork according to Example 1 is a wall formwork, and the distance between the pair of slats 11 and 11 using expanded metal as a mesh steel plate and the slats 11 and 11 installed opposite to each other is set. It is comprised from the column-type separator 31 which hold | maintains and connects the bottom plates 11 and 11. FIG.

The expanded metal used for the weir plate 11 is obtained by processing a steel plate having a thickness of about 1.2 mm to about 1.6 mm, the shape of the plane is rectangular, and both end edges along the long side are about 20 mm. A bent edge 21 is formed that is bent at substantially right angles in the same direction with a width of. In the present embodiment, the shape of the cross section is a shape in which the tip of the bent edge 21 where the included angle between the bent edge 21 and the flat surface is an obtuse angle than 90 ° is slightly opened. This is a measure for preventing the bulking plate 11 from becoming bulky when it is stacked and packed.
The size of the slat plate 11 has a width of 450 mm and a height that reaches the lower slab form or the lower form of the slab. Of course, this dimension can be appropriately changed depending on the location to be used.

The column separator 31 includes two 5 mmφ vertical bars 41, 41 arranged in parallel, and 5 mmφ horizontal bars 43, 43 which are welded in a lattice pattern at intervals of about 100 mm perpendicular to the two vertical bars 41, 41. , And so on. The horizontal stripe 43 has a crank shape in which both ends thereof are bent at substantially right angles in the horizontal and opposite directions, and the bent direction of the horizontal stripe 43 is orthogonal to the length direction of the vertical stripe 41. In addition, it can also be set as the U shape which bent both ends of the horizontal stripe 43 in the same direction, respectively.
When the column separator 31 is used, the vertical bars 41 are erected from the floor surface. At this time, the direction of the distal end of the horizontal bars 43 bent in a crank shape is parallel to the board 11. To. In addition, the length of the vertical stripes 41, that is, the height of the column separator 31 is basically substantially the same as the height of the slat plate 11, but it goes without saying that this dimension is appropriately changed depending on the location to be used. .

  Next, a method for assembling the concrete mold according to the first embodiment and its operation and effects will be described.

As an example of the concrete mold according to the first embodiment, an example of an assembly procedure for a wall mold will be described below.
(1) The columnar separators 31, 31,... Along the wall core are arranged at an interval of approximately 450 mm so as to match the width of the slat plate 11 and temporarily fixed so as to be self-supporting.
(2) From one of the temporarily fixed columnar separators 31, 31,..., The structural horizontal stripe 53 is brought into contact with the vertical stripe 41 and bound with an annealed iron wire (binding wire: not shown). The vertical bars 51, 51,... Are arranged in a lattice by using the horizontal bars 53 as a guide, and the horizontal bars 53 for the structure are vertically connected from the other of the columnar separators 31, 31,. Bundled with an annealed iron wire (bundling wire) in contact with the bar 41, and using the horizontal bar 53 for the structure as a guide, the vertical bars 51, 51,. Thus, the structural wall reinforcement (double reinforcement) is assembled. Since the structural wall bars can be assembled in this way, the columnar separator 31 serves as a guide for assembling the structural reinforcing bars, and the assembled structural reinforcing bars are defined. The concrete covering thickness can be secured.
(3) Next, according to the allocation drawing of the slats, the mesh of the bent edges 21 of the slats 11 is built while being fitted to the distal ends of the horizontal bars 43 of the columnar separator 31.
(4) The bent edge portions 21 of the adjacent siding plates 11 built in are spot-welded at a predetermined interval and welded to each other. In addition, even if it does not weld, you may bind mutually by an annealed iron wire (binding wire), or it may crimp | tighten mutually by crimping steel materials.
This completes the formwork assembly work, but no temporary materials such as thick pipes or foam ties are required for the formwork assembly work. Since it becomes a structure, it is not necessary to dismantle the formwork after placing the concrete.

In concrete placement after formwork assembly work, excess water unnecessary for concrete hardening in the ready-mixed concrete may ooze out from the mesh of the slats, and when it is driven at the same concrete placement speed, the side pressure by the concrete is The maximum concrete head appears at a relatively early time as compared to a mold using a so-called panel, and the side pressure received by the slat 11 is lower than that of a mold using the panel.
And since the condition of the ready-mixed concrete during driving can be observed from the outside, it is possible to prevent unsatisfactory wraparound of the ready-mixed concrete and so-called jumpers.

  Further, after the concrete is placed, the formwork dismantling work is not required, so it is possible to immediately start the subsequent process such as wall finishing, and the expanded metal used for the siding board 11 causes shrinkage cracks, earthquakes, etc. on the concrete surface Cracks due to shaking can be prevented.

  Next, the concrete mold according to the second embodiment will be described with reference to FIGS. 1, 4, and 5. However, the difference from the concrete mold according to the first embodiment is the column separator 32 in terms of the configuration. Therefore, here, the columnar separator 32 will be mainly described.

The columnar separator 32 is composed of a single 5 mmφ vertical bar 41 and 5 mmφ horizontal bars 43, 43,... Welded at an interval of about 100 mm perpendicular to the longitudinal direction of the vertical bar 41 ( (See FIG. 4 (a)). Note that the columnar separator 32 may be two 5 mmφ vertical bars 41, 41, and the two vertical bars 41, 41 may be arranged in parallel with the dam plate 11 with the horizontal bars 43 in between (FIG. 4 ( b)).
The lateral stripe 43 has a crank shape in which both ends thereof are bent at substantially right angles in the horizontal and opposite directions, and the planar position of the lateral stripes 43, 43,..., That is, the lateral stripes 43, 43,. When projected, they are welded so as to substantially match. In addition, it can also be set as the U shape which bent both ends of the horizontal stripe 43 in the same direction, respectively.
When the column separator 31 is used, the vertical bars 41 are erected from the floor surface. At this time, the direction of the distal end of the horizontal bars 43 bent in a crank shape is parallel to the board 11. To. In addition, the length of the vertical stripes 41, that is, the height of the column separator 31 is basically substantially the same as the height of the slat plate 11, but it goes without saying that this dimension is appropriately changed depending on the location to be used. .

This columnar separator 32 is used in the case where the structural wall reinforcement is single. In the example (2) of the assembly procedure of the wall mold frame given as one example of the concrete mold frame according to the first embodiment, the column separator 32 is provided only on one side. If the structural horizontal bars 53 and the structural vertical bars 51 are assembled in a lattice shape, an example of a procedure for assembling the wall mold as an example of the concrete mold according to the second embodiment is obtained.
Moreover, since the effect of the concrete formwork which concerns on Example 2 is the same as the effect of the concrete formwork which concerns on Example 1, the description is abbreviate | omitted.
In the first and second embodiments, the long side direction of the weir plate 11 is vertical, but it can also be used horizontally. In this case, instead of the columnar separator 31 or the columnar separator 32, a width stopper whose shape viewed from the side is fitted into the mesh of the bent edge portion 21 is fitted.

  Next, the concrete mold according to the third embodiment will be described with reference to FIGS. 6 and 7. However, since there is a portion common to the concrete mold according to the first and second embodiments, the embodiment is described here. The part different from the concrete formwork according to 1 will be mainly described.

  The concrete formwork according to Example 3 is a column that maintains a gap between a pair of slats 13 and 13 using rib laths and the slats 13 and 13 that are installed opposite to each other and connects the slats 13 and 13 to each other. And a mold separator 33.

  The rib lath used for the weir plate 13 has a thickness of approximately 0.5 mm, the planar shape is rectangular, and the interval between the ribs 23 is approximately 100 mm.

The column-shaped separator 33 is welded in a grid pattern at two approximately 5 mmφ vertical bars 41, 41 arranged in parallel and at an interval of approximately 100 mm which is perpendicular to the two vertical bars 41, 41 and is the same as the interval of the ribs 23. .., And both ends of the horizontal bar 43 are bent at an acute angle in the horizontal direction. Needless to say, both ends of the horizontal stripes 43 may be bent in the vertical direction.
When the columnar separator 33 is used, the vertical bars 41 are erected from the floor surface. At this time, the direction of the horizontal bars 43 is set to be a direction orthogonal to the dam 13. In addition, the length of the vertical stripe 41, that is, the height of the column separator 33 is set to reach the lower slab form or the lower form of the slab.

  Next, a method for assembling the concrete mold according to the third embodiment and its operation and effects will be described.

As one example of the concrete mold according to the third embodiment, an example of the procedure for assembling the wall mold will be described below.
(1) The columnar separators 33, 33,... Along the wall core are arranged at intervals of about 400 mm to about 600 mm and temporarily fixed so as to be self-supporting.
(2) The structural horizontal stripe 53 is brought into contact with the vertical stripe 41 from one of the temporarily fixed column separators 33, 33,... And bound by a binding wire (not shown), and the structural horizontal stripe 53 is guided. The vertical bars 51, 51,... For the structure are arranged in a lattice pattern, and the horizontal bars 53 for the structure are applied to the vertical bars 41 from the other of the columnar separators 32, 32,. .. Are connected by a binding wire (not shown), and the structural horizontal bars 53 are used as a guide, and the structural vertical bars 51, 51,... Wall reinforcement (double reinforcement) is assembled. In this way, the structural wall bars can be easily assembled, but the column separator 32 serves as a guide for assembling the structural reinforcing bars, and the assembled structural reinforcing bars are: A predetermined concrete covering thickness can be secured.
(3) Next, according to the allocation drawing of the slats, the ribs 23 of the slats 13 are brought into contact with the bent portions of the horizontal stripes 43 of the columnar separator 32, and the bent portions and the ribs 23 that are in contact with each other are bound to the binding wire 45. Build with bundling with (annealed iron wire).
This completes the formwork assembly work, but no temporary materials such as thick pipes or foam ties are required for the formwork assembly work. Since it becomes a structure, it is not necessary to dismantle the formwork after placing the concrete.

  Since the operation effect of the concrete formwork according to the third embodiment after the concrete placement after the mold assembly operation and the concrete placement is substantially the same as the operation effect of the concrete formwork according to the first embodiment, the description thereof will be given. Omitted.

FIG. 1 is a front view of a slat used for a concrete formwork according to Example 1 and Example 2. FIG. 2 is a cross-sectional view (plane cross-sectional view) taken along the line II-II of Example 1 in FIG. 3 is a cross-sectional view (longitudinal cross-sectional view) taken along the line III-III of Example 1 in FIG. 4 is a cross-sectional view taken along the lV-lV arrow (planar cross-sectional view) of the second embodiment and a modification of the second embodiment in FIG. 1, and FIG. 4 (a) is a cross-sectional view taken along the lV-lV arrow of the second embodiment. FIG. 4B is a cross-sectional view taken along the arrow lV-lV of the modified example of the second embodiment (planar cross-sectional view). FIG. 5 is a cross-sectional view (vertical cross-sectional view) taken along the line VV of Example 2 in FIG. 1. FIG. 6 is a cross-sectional plan view of a concrete mold according to the third embodiment. FIG. 7 is a longitudinal sectional view of a concrete formwork according to a third embodiment.

Explanation of symbols

11 Pegs Used for Concrete Forms of Example 1 12 Pegs Used for Concrete Forms of Example 2 13 Pegs Used for Concrete Forms of Example 3 21 Curved Edges 23 Ribs 31 Example 1 Column separator used for concrete mold 32 Column separator used for concrete mold of Example 2 33 Column separator used for concrete mold of Example 3 41 Vertical stripe of column separator 43 Horizontal stripe of column separator

Claims (13)

It consists of a slat that is erected from the floor and a separator for a slat that maintains the spacing between the slats
The weir plate is a rib lath or mesh steel plate,
The barrier plate separator is welded to at least one longitudinal bar so that a plurality of horizontal bars having a predetermined same plane shape are equidistantly spaced so that their planar positions substantially coincide with each other. A columnar separator that extends substantially horizontally so as to be orthogonal to the plate and is bent in the horizontal or vertical direction at a right angle or an acute angle in the vicinity of the dam plate,
The slat plate is brought into contact with or fitted to the bent part of the horizontal stripe of the column separator, and is fixed.
The concrete mold is characterized in that the columnar separator is erected at a predetermined interval from the floor surface.   The thickness of the rib lath of the weir plate or the mesh-shaped steel plate is about 0.5 mm to about 2.3 mm, and the vertical and horizontal lines of the separator for the weir plate are about 5 mmφ to about 6 mmφ. The concrete formwork according to claim 1.   Of the vertical bars of the columnar separator, the vertical bars closest to the bent part of the horizontal bars of the columnar separator are brought into contact with the horizontal bars constituting the structural reinforcing bars so that the structural reinforcing bars 3. The concrete formwork according to claim 1, wherein when assembled, the concrete covering thickness of the structural reinforcing bar is a predetermined thickness. 4.   The interval between the horizontal stripes of the columnar separator is approximately 80 mm to approximately 150 mm, which corresponds to an integral multiple of the interval between ribs of the ribs of the barrier plate or the interval between meshes of the mesh steel plate. The concrete formwork of Claim 1 thru | or 3.   5. The concrete formwork according to claim 1, wherein a predetermined interval of the plurality of columnar separators erected from the floor surface is approximately 400 mm to approximately 600 mm. The weir plate is composed of a pair of weir plates that are installed opposite to each other,
Both ends of the horizontal stripe of the columnar separator are bent at a right angle or an acute angle in a horizontal direction or a vertical direction,
6. A concrete formwork according to any one of claims 1 to 5, wherein each of the pair of slats is fixed to a bent portion at both ends of the horizontal stripes of the columnar separator. The weir plate is a rib lath, and the ribs of the rib lath are installed in a horizontal direction,
Both ends of the horizontal stripes of the columnar separator are bent at an acute angle in the horizontal or vertical direction,
The interval between the ribs of the rib lath and the interval between the horizontal stripes of the column type separator are the same, and the rib and the bent portion of the horizontal stripe of the column type separator contacting the rib are fixed. A concrete formwork according to claim 6. The weir plate is a rectangular mesh steel plate, the long edges on both sides are provided with bent edges that are bent at substantially right angles, and the long sides are in the vertical direction and the direction of the bent edges is Installed towards the column separator side,
Both ends of the horizontal stripes of the columnar separator are bent at right angles in the horizontal direction and the interval between the columnar separators standing from the floor surface is substantially equal to the length of the short side of the slats,
A tip bent at a right angle of the horizontal stripe of the columnar separator is fitted into the mesh of the bent edge of the dam, and the dam is fixed.
The concrete formwork according to claim 6, wherein the bent edges of the adjacent slats that are in contact with each other are fixed in a spot shape at a predetermined interval. The weir plate is a rectangular mesh steel plate and is installed so that the long sides on both sides are in the vertical direction,
Both ends of the horizontal stripes of the column separator are bent at a right angle or an acute angle in the horizontal direction, and the interval between the plurality of column separators standing from the floor surface is substantially equal to the length of the short side of the board. ,
A portion bent at a right angle or an acute angle of the horizontal stripe of the columnar separator that abuts the mesh of the dam plate and the mesh are fixed,
The concrete formwork according to claim 6, wherein long sides of the adjacent siding plates that are in contact with each other are fixed in a spot shape at a predetermined interval. The weir plate is installed facing a predetermined wall surface,
One end of the horizontal stripe of the columnar separator is bent at a right angle or acute angle in the horizontal direction or the vertical direction and the other end of the horizontal stripe of the columnar separator is connected and fixed to the predetermined wall surface,
6. The concrete form according to claim 1, wherein the dam plate is fixed to bent portions at both ends of the horizontal stripes of the columnar separator. The weir plate is a rib lath, and the ribs of the rib lath are installed in a horizontal direction,
One end of the horizontal stripe of the columnar separator is bent at an acute angle in the horizontal or vertical direction,
The interval between the ribs of the rib lath and the interval between the horizontal stripes of the column type separator are the same, and the rib and the bent portion of the horizontal stripe of the column type separator contacting the rib are fixed. The concrete formwork according to claim 10. The weir plate is a rectangular mesh steel plate, the long edges on both sides are provided with bent edges that are bent at substantially right angles, and the long sides are in the vertical direction and the direction of the bent edges is Installed towards the column separator side,
One end of the horizontal stripe of the columnar separator is bent at a right angle in the horizontal direction, and the interval between the columnar separators standing from the floor surface is substantially equal to the length of the short side of the board,
A tip bent at a right angle of the horizontal stripe of the columnar separator is fitted into the mesh of the bent edge of the dam, and the dam is fixed.
The concrete formwork according to claim 10, wherein the bent edges of the adjacent siding plates that are in contact with each other are fixed in a spot shape at a predetermined interval. The weir plate is a rectangular mesh steel plate and is installed so that the long sides on both sides are in the vertical direction,
One end of the horizontal stripe of the columnar separator is bent at a right angle or an acute angle in the horizontal direction, and the interval between the columnar separators standing from the floor surface is substantially equal to the length of the short side of the board. ,
A portion bent at a right angle or an acute angle of the horizontal stripe of the columnar separator that abuts the mesh of the dam plate and the mesh are fixed,
11. The concrete form according to claim 10, wherein long sides of the adjacent siding plates that are in contact with each other are fixed in a spot shape at a predetermined interval.

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