JP2019210633A - Deck plate and deck plate fixing metal used for deck plate - Google Patents

Abstract

To provide a deck plate which can be installed in a stable state when a concrete slab is constructed and which can be easily taken out from a solidified concrete slab to be reused, and to provide a deck plate fixing metal used therefor.SOLUTION: A deck plate fixing metal 6a is composed of a long member 7 made of metal which has a rectangular shape in a plan view and has an upright part 7a formed so that one end thereof is bent downward at a right angle, and a reinforcing member 8a provided on a lower surface 7b of the long member 7. A deck plate 1a of the present invention is provided with a square pipe 3 to which deck plate fixing metals 6a, 6a are inserted at both ends, and a flat plate 2 fixed to a lower surface 2b of the plurality of square pipes 3; a bolt 4 is screwed into a bolt hole formed in a lower surface 3a of the square pipe 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a deck plate used when forming a concrete slab on a floor, a ceiling or the like of a building and a deck plate fixing metal fitting used therefor, and in particular, a deck plate having a square pipe having both ends opened and the same. The deck plate fixing bracket.

In a building using reinforced concrete or steel reinforced concrete as a structural material, when a concrete slab is formed on a floor or a ceiling, a deck plate obtained by processing a metal plate is often used as a part of the formwork.
Since the conventional deck plate is welded to the upper surface of the beam or fixed to the beam by bolting or the like, it is difficult to separate and recover from the solidified concrete slab. However, since the deck plate finishes its role when the concrete is solidified and the slab is formed, it is desirable that the deck plate be collected and reused after the concrete slab is constructed.

For example, Patent Document 1 describes an invention relating to a deck plate that can efficiently adjust the overall length, and that can be collected and reused multiple times after a concrete slab is constructed, and a method for manufacturing the same. Yes.
Here, the deck plate described in Patent Document 1 will be described with reference to FIGS. 8 and 9. However, FIG. 8 (a) is a front view of the deck plate according to the prior art disclosed in Patent Document 1, and FIGS. 8 (b) and 8 (c) show the deck plate shown in FIG. 8 (a). It is a top view of two types of formwork members to constitute. 9 (a) and 9 (c) are external perspective views of the mold member, and FIGS. 9 (b) and 9 (d) are cross-sectional views taken along line DD in FIG. 9 (a), respectively. It is the EE arrow directional cross-sectional view in a figure and FIG.9 (c).
FIGS. 8B and 8C correspond to views showing a state in which the deck plate viewed in the direction indicated by the arrow Y in FIG. 8A is disassembled into two mold members.

As shown in FIGS. 8 and 9, the deck plate 51 is welded to the flat plates 54 and 55 whose upper surfaces 54 a and 55 a become molding surfaces when placing concrete and the lower surfaces 54 b and 55 b of the flat plates 54 and 55. It consists of metal mold members 52 and 53 having a thickness of about 0.8 mm, which are constituted by square pipes 56 and 57 fixed by bonding or rivets or screws.
Each of the square pipes 56 and 57 is pressed and deformed in a flat shape at one end, and a long metal member 58 (see FIG. 9B) so as to close the end (hereinafter referred to as flat ends 56b and 57b). ) And FIG. 9D) are inserted therein. The outer dimension of the square pipe 56 is smaller than the inner dimension of the square pipe 57, and the opening end 56a is formed so as to be inserted into the opening end 57a.

The upper surface 56c of the square pipe 56 is spot welded to the flat plate 54 at two locations near the center in the longitudinal direction and near the flat end 56b. The upper surface 57c of the square pipe 57 is centered in the longitudinal direction with respect to the flat plate 55. Spot welding is performed at three locations near and near both ends. Thus, the mold member 52 inserts the square pipe 56 into the square pipe 57 of the mold member 53 so that the flat plate 55 is placed between the lower surface 54b of the flat plate 54 and the upper surface 56c of the square pipe 56. It is possible to insert only the length.
Since the flat plates 54 and 55 are as thin as about 0.8 mm, the flat plate 55 is inserted between the lower surface 54b of the flat plate 54 and the upper surface 56c of the square pipe 56, and a part of the flat plates 54 and 55 is overlapped. Thereafter, even when concrete is placed on the upper surfaces 54a and 55a, there is no possibility that the concrete will enter between the lower surface 54b of the flat plate 54 and the upper surface 55a of the flat plate 55.

  In this way, the deck plate 51 connects the mold member 52 to the mold member 53 so that the open end 56a of the square pipe 56 is inserted into the open end 57a of the square pipe 57, and FIG. As shown by an arrow X, the overall length can be easily adjusted by sliding the mold members 52 and 53 with each other. Therefore, the deck plate 51 is easy to separate from the concrete slab and is suitable for reuse because it has a wide range of use after being recovered.

International Publication No. 2015/029197 Pamphlet

  A concrete slab construction method using the deck plate 51 will be described with reference to FIGS. 10 (a) and 10 (b) are diagrams schematically showing how a concrete slab is formed using the deck plate shown in FIG. FIG. 11A is a view showing a state in which the deck plate shown in FIG. 8 is bridged between two H-shaped steels, and FIG. 11B is a view showing the deck shown in FIG. It is a front view of a receiving jig. Further, FIG. 12 (a) is a view showing a state in which a deck plate according to the prior art including a square pipe whose both ends are not crushed is bridged between two H-shaped steels, and FIG. 12 (b). FIGS. 12C and 12C are a side view and a plan view of the deck plate shown in FIG.

As shown in FIG. 10A, first, a support 60 is assembled on a slab 59 or the like on a lower floor that has already been formed, and a beam form 61 is installed on the support 60.
Next, after the mold members 52 and 53 are slid to adjust the whole to an appropriate length, both ends are attached to the upper surfaces of the square members 62 and 62 fixed to the side portions of the two opposite beam molds 61 and 61. The deck plate 51 is installed so as to be placed respectively.

Further, after a sleeper 63 is placed on the support 60 installed between the beam form frames 61 and 61 to support the central portion of the deck plate 51, the upper surfaces of the flat plates 54 and 55 of the plurality of deck plates 51. A slab form (not shown) made of reinforcing bars is formed on 54a and 55a (see FIG. 8 (a)), and concrete is placed in the slab form.
When the concrete is solidified and the beam 64 and the slab 65 are formed, the slab formwork and support 60, the beam formwork 61, the deck plate 51 and the like are to be removed. If 60 is removed at a time, the deck plate 51 that has lost its support may fall inadvertently. For this reason, a new support 60 is usually installed on the predetermined deck plate 51 for the purpose of supporting a location different from the location supported by the sleepers 63 (see FIG. 10B).
And after removing all the deck plates 51, the said slab formwork, the support work 60, and the beam formwork 61 are removed.

When the deck plate 51 is bridged between two H-shaped steels installed so that the upper and lower flanges are horizontal, for example, a deck receiving jig as shown in FIGS. 11 (a) and 11 (b) 67 is used.
The deck receiving jig 67 is a section steel having a substantially Z-shaped cross section, and an angle member 68 that is fixed to a web 66a of an H-shaped steel 66 using a fastening bolt 69a and a nut 69b. It is provided and used for the purpose of supporting the deck plate 51 via the square member 62.
The angle member 68 includes a flat portion 68a on which the square member 62 is placed, an upright portion 68b extending from one end thereof so as to be orthogonal to the flat portion 68a, and the other end so as to form an acute angle with the flat portion 68a. It consists of the attaching part 68c extended from. A reinforcing plate 70 having a trapezoidal shape in plan view is provided at the center in the width direction of the angle member 68 so as to be orthogonal to the flat portion 68a and the mounting portion 68c and to connect them to each other.

The mounting portion 68c is provided with a bolt hole 72a formed in the inner peripheral surface thereof in parallel with the longitudinal direction of the flat portion 68a at a central position in the width direction thereof. ing. That is, the reinforcing plate 70 is provided between the bolt hole 72a and the base end of the mounting portion 68c.
In addition, the attachment portion 68c has a pair of elongated holes 72b and 72b that are elongated in parallel with the attachment portion 68c on both sides of the reinforcement plate 70 so that the reinforcement plate 70 is sandwiched between them at the same distance from the base end. The vertical direction is provided so as to be orthogonal to the mounting portion 70. However, the radius of curvature of the arc portion of the long hole 72b is formed to be larger than the radius of the mounting bolt 69a. The long holes 72b and 72b are formed so that the mounting bolts 69a can be inserted therethrough.
A pair of mounting bolts 69a and 69a inserted through the pair of elongated holes 72b and 72b can be inserted into the web 66a of the H-shaped steel 66 at the same time where the deck receiving jig 67 is attached. A pair of through holes (not shown) are provided at equal distances from the flange 66b.

  As described above, the deck plate disclosed in Patent Document 1 is useful when a concrete slab is formed on a floor, a ceiling, or the like in a building using reinforced concrete or steel reinforced concrete as a structural material. However, when a square pipe with a wall thickness of 1.6 mm or more is used, it is difficult to crush the end portion and process it into a flat shape, so that the deck plate disclosed in Patent Document 1 (FIG. 8 (a The deck plate 51) shown in FIG.

When the deck plate 51 cannot be used, for example, as shown in FIGS. 12A to 12C, a plurality of square pipes 74 arranged in parallel with a predetermined interval are connected to each other. As described above, a deck plate 73 having a structure in which a flat plate 75 having a rectangular shape in plan view is fixed to the upper surface 74a by welding, bonding, rivets or screws has been conventionally used.
However, since the deck plate 73 is not a structure that can change the overall length, after the concrete slab is formed, it is not easy to take out from the inside, and the range of use after collection is limited. There was a problem that it was not suitable for reuse. In addition, when the cross section of the square pipe 74 has a vertically long shape in which the length in the width direction (direction parallel to the flat plate 75) is shorter than the length in the height direction (direction orthogonal to the flat plate 75), The end portion of the square pipe 74 placed on the upper surface of the square member 62 easily swings in a vertical plane perpendicular to the longitudinal direction of the square pipe 74. That is, the deck plate 73 has a problem that it cannot be installed in a stable state in such a case.

  The present invention has been made in response to such a conventional situation, and can be installed in a stable state when constructing a concrete slab, and can be easily taken out from a solidified concrete slab and reused. An object of the present invention is to provide a deck plate that can be used and a deck plate fixing bracket used therefor.

  In order to achieve the above object, the first invention includes a flat plate whose upper surface is a molding surface when placing concrete, and a plurality of square pipes fixed to the lower surface of the flat plate. A deck plate fixing bracket used for a deck plate that forms a part of a formwork when a concrete slab is formed on a ceiling or the like, and is a metal long member having a rectangular shape in plan view, and the long member A reinforcing member provided on the first surface at a desired interval from one end in the longitudinal direction, and the reinforcing member is at least partially from the other end in the longitudinal direction of the long member to the inside of the square pipe. Is formed so as to be insertable together with the long member.

In the deck plate fixing bracket of the above structure, this corner is used when the deck plate used as a part of the formwork when a concrete slab is formed on a structure made of reinforced concrete or steel reinforced concrete is provided with a square pipe. A part of the long member and the reinforcing member is inserted into the pipe, and one end of the long member protruding from the square pipe is fixed to the upper surface of the square member installed in the beam type frame or H-shaped steel. And the deck plate is fixed to the H-shaped steel.
In this case, the square pipe is placed directly on the top surface of the square bar, even if the square pipe has a vertically long shape in which the length in the width direction is shorter than the length in the height direction. In contrast, since the situation that the end portion of the square pipe placed on the upper surface of the square member does not oscillate in the vertical plane perpendicular to the longitudinal direction does not occur, the installation state of the deck plate is stabilized.
Furthermore, when the deck plate fixing bracket is slid in the longitudinal direction of the square pipe with the deck plate fixing bracket attached to the deck plate as described above, the portion of the fixing bracket that protrudes from the square pipe is added to the deck plate. Has the effect of changing the length of.

The second invention is characterized in that, in the first invention, the elongate member is formed with an upright portion such that one end is bent at a right angle toward the first surface.
In the deck plate fixing bracket having such a structure, in addition to the action of the first invention, a long member and a part of the reinforcing member are inserted into the square pipe of the deck plate, and the long plate protrudes from the square pipe. When a horizontal force that pulls the deck plate fixing bracket away from the square member is applied with one end of the member placed on the upper surface of the square member, the upright part of the long member is locked to the side of the square member. And it has the effect | action of restrict | limiting the movement of the deck plate fixing metal fitting in the said direction.

According to a third aspect of the present invention, in the first aspect or the second aspect, the long member is formed by bending a portion where no reinforcing member is provided to the first surface side by a desired angle. Is.
When a part of the deck plate fixing bracket of the above structure is respectively inserted at both ends of the square pipe of the deck plate, when this deck plate is placed so as to be bridged between two beam formwork or H-shaped steel, The deck plate is lifted by the long members at both ends, and a camber (removal) is formed.

According to a fourth invention, in any one of the first to third inventions, the reinforcing member is in a direction orthogonal to the first surface at an end portion on the side close to one end in the longitudinal direction of the long member. It is characterized by comprising a connecting plate that connects the portion farthest from the long member and the first surface of the portion where the reinforcing member is not provided.
In the fourth aspect of the invention, in addition to the action of any one of the first to third aspects of the invention, the connecting plate has the action of increasing the bending strength of the long member where the reinforcing member is not provided. .

According to a fifth invention, in any one of the first to third inventions, the reinforcing member is made of a plastic or wooden prismatic body.
In the deck plate fixing bracket having the above structure, in addition to the action of any one of the first to third inventions, the material cost of the member constituting the reinforcing member is low, and the number of the member is small. Has an effect.

A deck plate according to a sixth aspect of the present invention includes a square pipe into which the deck plate fixing bracket according to any one of the first to fifth aspects of the invention is inserted at both ends, and the square pipe is fixed to the lower surface. And a bolt hole formed in the lower surface of the square pipe, and a bolt screwed into the bolt hole so that the tip can protrude into the square pipe. It is.
The sixth invention has the same function as any one of the first to fifth inventions.

According to a seventh aspect, in the sixth aspect, the square pipe and the flat plate are formed in a curved state so that a central portion in the longitudinal direction is convex toward the flat plate. .
In the deck plate having the above-described structure, two beam form frames and H-shaped steel are provided in a state where the deck plate fixing brackets according to any one of the first to fifth inventions are respectively inserted at both ends of the square pipe. When placed so as to be bridged between the two, a camber (removal) is formed at the center in the longitudinal direction.

  Since the deck plate to which the first invention is attached does not need to have the end portion of the square pipe processed into a flat shape, the use of the first invention reduces the manufacturing cost of the deck plate. Can be planned. In such a deck plate, even when the cross section of the square pipe has a vertically long shape in which the length in the width direction is shorter than the length in the height direction, when the first invention is used, Since the installation state of the deck plate with respect to the beam formwork and the H-shaped steel is stabilized, the operator can safely perform the installation work of the deck plate. Furthermore, when the deck plate is installed using the first invention, after the concrete slab is formed, the entire length of the deck plate added with the first invention is shortened, so that The deck plate can be easily removed from the rack. And if it is such a structure, since the whole length can be adjusted, the utilization range after collection | recovery is wide. That is, according to the first invention, the deck plate can be easily recovered and reused.

  According to the second invention, in addition to the effects of the first invention, the elongated member and a part of the reinforcing member are inserted into the square pipe of the deck plate, and the long member protrudes from the square pipe. Even when a horizontal force is applied to the deck plate fixing bracket while pulling it away from the square rod while one end of the deck plate is placed on the top surface of the square plate, the deck plate fixing bracket moves in that direction and the long member Therefore, the operator can safely perform the work of installing the deck plate with respect to the beam form frame or the H-shaped steel.

  When the concrete slab is formed, if the deck plate is placed so as to be bridged between two beam formwork or H-shaped steel using the third invention, a camber is formed on the deck plate. It becomes unnecessary. Therefore, according to 3rd invention, in addition to the effect of 1st invention and 2nd invention, there exists an effect that the cost required for construction of concrete slab is reduced.

  According to the fourth invention, in addition to the effects of any one of the first to third inventions, the bending strength of the portion where the reinforcing member is not provided in the long member is enhanced by the connecting plate, There exists an effect that the said part is hard to be damaged.

  According to the fifth invention, in addition to the same effect as any one of the first to third inventions, the manufacturing cost can be reduced.

  According to the sixth invention, the same effect as any one of the first invention to the fifth invention is obtained.

  According to the seventh aspect, since no support work is required when forming the concrete slab, in addition to the effect of the sixth aspect, the cost required for the construction of the concrete slab is reduced.

(A) is the front view which showed the external appearance of the deck plate of Example 1, (b) is the A direction arrow view in the figure (a), (c) is the deck plate fixing metal fitting of Example 1. FIG. It is the perspective view which showed the external appearance. (A) And (b) is the front view which showed the use condition of the deck plate of Example 1, and the deck plate fixture, respectively, and its sectional drawing, (c) is a BB line arrow in the figure (a). It is a sectional view, and (d) is a front view showing an appearance of a first modification of the deck plate fixing bracket of the first embodiment. (A) is the external view of the deck plate of Example 1 in which the deck plate fixing metal fitting was attached to both ends, (b) was the deck plate of the same figure (a) bridged between two H-shaped steel. It is the figure which showed the state, (c) is the figure which expanded and showed the upper part of one H-shaped steel in the figure (b). (A) And (b) is the perspective view which showed the 2nd modification of the deck plate fixing metal fitting of Example 1, and the external appearance of the reinforcement member, respectively, (c) and (d) is respectively Example 1 It is the perspective view which showed the external appearance of the 3rd modification of a deck plate fixing bracket and its reinforcement member. (A) And (b) is the perspective view which showed the external appearance of the 4th modification of the deck plate fixing metal fitting of Example 1, and its reinforcement member, respectively, (c) and (d) is respectively Example 1 It is the perspective view which showed the external appearance of the 5th modification of a deck plate fixing bracket and its reinforcement member. (A) is the perspective view which showed the external appearance of the deck plate fixing bracket of Example 2, (b) is the deck plate of Example 1 in which the deck plate fixing bracket of Example 2 was attached to both ends. It is the figure which showed the state spanned between mold steel, (c) is the figure which expanded and showed the upper part of one H-shaped steel in the figure (b). (A) is the front view which showed the external appearance of the deck plate of a structure different from the deck plate of Example 1, (b) is the same figure with which the two deck plate fixing brackets of Example 1 were attached to both ends, respectively. It is the figure which showed the state by which the deck plate of (a) was spanned between two H-shaped steel, (c) is the figure which expanded and showed the upper part of one H-shaped steel in the same figure (b). is there. (A) is a front view of the deck plate which concerns on a prior art, (b) And (c) is a top view of two types of formwork members which comprise the deck plate shown to the figure (a). (A) And (c) is an external appearance perspective view of a formwork member, (b) and (d) are DD sectional views taken along the line D-D in FIG. It is E line arrow sectional drawing. (A) And (b) is the figure which showed typically a mode that concrete slab was formed using the deck plate shown in FIG. (A) is the figure which showed the state by which the deck plate shown in FIG. 8 was spanned between two H-shaped steel, (b) is the front view of the deck receiving jig shown to the same figure (a). It is. (A) is the figure which showed the state by which the deck plate based on the prior art provided with the square pipe whose both ends were not crushed was bridged between two H-shaped steel, (b) and (c), respectively It is the side view and top view of a deck plate shown to the same figure (a).

The deck plate of the present invention and the deck plate fixing bracket used therefor will be specifically described with reference to FIGS. The deck plate of the present invention is a square member fixed to a side of a beam form frame or a flange of an H-shaped steel via a support or the like when a concrete slab is formed in a structure using reinforced concrete or steel reinforced concrete as a structural material. It is to be installed on the upper surface.
Therefore, in the following description, expressions such as “upper surface”, “lower surface”, “horizontal”, and “vertical” are used on the assumption that the deck plate is actually used as such.

FIG. 1A is a front view showing an appearance of a deck plate 1a of Example 1 according to an embodiment of the present invention, and FIG. 1B is a view in the direction of arrow A in FIG. FIG.1 (c) is the perspective view which showed the external appearance of the deck plate fixing metal fitting 6a of Example 1 which concerns on embodiment of this invention.
FIG. 2A is a front view showing the appearance of the state in which the deck plate fixing bracket 6a of FIG. 1C is inserted into one end of the square pipe 3 of the deck plate 1a in FIG. 2 (b) is a cross-sectional view showing a state in which the deck plate 1a and the deck plate fixing bracket 6a are cut along a plane parallel to the longitudinal direction of the deck plate 1a while passing through the central axis of the bolt 4 in FIG. 2 (a). . 2 (c) is a cross-sectional view taken along line BB in FIG. 2 (a), and FIG. 2 (d) is a first modification of the deck plate fixing bracket 6a shown in FIG. 1 (c). It is the front view which showed the external appearance.
FIG. 3 (a) shows a state in which the deck plate fixing metal fittings 6a of FIG. 1 (c) are respectively inserted at both ends of the square pipe 3 of the deck plate 1a in FIG. 1 (a). FIG. 3A shows a state in which the deck plate 1a and the deck plate fixtures 6a, 6a in FIG. 3A are bridged between two H-shaped steels 66, 66. FIG. 3C is an enlarged view showing a state in which one end of the deck plate 1a is attached to one H-shaped steel 66 via the deck plate fixing bracket 6a in FIG. 3B.
The constituent elements shown in FIGS. 8 to 12 are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 1 (a) and 1 (b), the deck plate 1a of the present invention is welded to a flat plate 2 whose upper surface 2a becomes a molding surface when placing concrete, and a lower surface 2b of the flat plate 2. And a plurality of square pipes 3 fixed by bonding, rivets or screws. The square pipe 3 has a vertically long shape in which the cross section is shorter in the width direction (direction parallel to the flat plate 2) than the length in the height direction (direction orthogonal to the flat plate 2). The bolt hole 3b (see FIG. 2 (c)) into which the bolt 4 is screwed and the bolt hole 5a (see FIG. 2 (c)) in which an internal thread portion to be screwed into the bolt 4 is formed. ) Is provided so that the bolt 4 can communicate with the bolt hole 3b and the bolt hole 5a. The bolt 4 is screwed into the bolt hole 3b so that the lower surface of the deck plate fixing bracket 6a inserted into the square pipe 3 can be pressed by a tip end portion of the bolt 4 protruding into the square pipe 3 as will be described later. Yes.

In the deck plate 1a having such a structure, when the bolt 4 screwed into the bolt hole 5a is turned, the bolt 4 is held by the pedestal 5 so that the central axis does not move.
If the center axis is shaken, it is difficult to turn the bolt 4 and the force to turn the bolt 4 is applied unevenly to the edge of the bolt hole 3b, so that the portion may be damaged. Since the pedestal 5 is provided for 4, not only the bolt 4 can be easily operated, but also the bolt hole 3 b can be prevented from being damaged.

As shown in FIG.1 (c), the deck plate fixing metal fitting 6a of this invention is the metal elongate in which the upright part 7a was formed so that one end might be bend | folded at right angle downward, making rectangular shape in planar view. It consists of the member 7 and the reinforcement member 8a provided in the lower surface 7b of this elongate member 7. FIG. The elongate member 7 is provided with a nail hole 7c in the vicinity of the upright portion 7a.
The reinforcing member 8a is joined to the lower surface 7b so as to be orthogonal to the long member 7 and parallel to the width direction (short direction) thereof, and along the longitudinal direction of the long member 7. A rectangular standing plate 9 that is installed at a predetermined interval and a rectangular length that is arranged in parallel with the long member 7 and the ends of the partition plates 9 are joined to the upper surface 10a. The long plate 10, a rectangular connecting plate 11 that connects the end of the long plate 10 near the upright portion 7 a and the lower surface 7 b of the long member 7, and two adjacent standing plates 9, 9. 2 includes a rectangular bracing plate 12a having a rectangular shape in plan view that connects one base end and the other tip, and a rectangular bracing plate 12b that connects the upper surface 11a of the connecting plate 11 and the proximal end of the upright plate 9. .

The proximal end of the bracing plate 12b is joined to the lower surface 7b of the long member 7 at a desired interval from the upright portion 7a so that the end of the long member 7 can be placed on the upper surface of the square member 62. Yes. Further, the long member 7 and the reinforcing member 8a have a width (length in the short direction) and a height (length in a direction orthogonal to the long member 7) of the width and height of the opening of the square pipe 3. It is formed so as to be shorter than each (inside dimension).
That is, the deck plate fixing bracket 6a has a structure that can be inserted into the square pipe 3. Therefore, as shown in FIG. 2A, the deck plate fixing bracket 6a is used in a state of being inserted into the square pipe 3 of the deck plate 1a.
In the deck plate fixing bracket 6a, the entire reinforcing member 8a can be inserted into the square pipe 3 of the deck plate 1a. However, the deck plate fixing bracket of the present invention is limited to such a structure. It is not something. That is, the deck plate fixing bracket 6a may have a structure in which at least a part of the reinforcing member 8a can be inserted into the square pipe 3.

  In the deck plate fixture 6a having such a structure, the upright plate 9 acts so as to increase the compressive strength of the reinforcing member 8a in the direction perpendicular to the long member 7 and the long plate 10, and other directions. The bracing plate 12a acts to increase the compressive strength of the reinforcing member 8a. Further, in the deck plate fixing bracket 6a, the reinforcing member 8a is located on the side close to one end in the longitudinal direction of the long member 7 and is the farthest from the long member 7 in the direction orthogonal to the lower surface 7b (that is, The reinforcing member 8a is provided on the long member 7 by the connecting plate 11 that connects the tip of the standing plate 9 closest to the upright portion 7a) and the lower surface 7b of the portion where the reinforcing member 8a is not provided on the long member 7b. This has the effect of increasing the bending strength of the portion that is not formed.

  Further, the deck plate fixture 6a inserted into the square pipe 3 is slidable in the longitudinal direction of the square pipe 3 as shown by an arrow C in FIG. In this state, when the bolt 4 screwed into the bolt hole 3b and the bolt hole 5a of the pedestal 5 is advanced, it protrudes into the square pipe 3 as shown in FIGS. 2 (b) and 2 (c). The lower end 10b (see FIG. 1 (c)) of the long plate 10 constituting the reinforcing member 8a of the deck plate fixing bracket 6a is pressed by the tip of the bolt 4. When the bolt 4 is further advanced to increase the pressing force of the bolt 4 against the lower surface 10 b of the long plate 10, the deck plate fixing bracket 6 a finally becomes incapable of moving with respect to the square pipe 3. That is, the bolt 4 has a function of fixing the deck plate fixing bracket 6 a to the square pipe 3.

  The deck plate fixing bracket 6a includes five standing plates 9 and eight bracing plates 12a. However, the deck plate fixing bracket of the present invention is not limited to such a structure. For example, a structure including three standing plates 9 and four bracing plates 12a (deck plate fixing bracket 6b in FIG. 2D) may be used. That is, the lengths of the long member 7 and the reinforcing member 8a can be appropriately changed according to the deck plate 1a to be used and its installation location.

As shown in FIG. 3A, the deck plate fixing bracket 6a protrudes from the square pipe 3 in a state where the long member 7 and a part of the reinforcing member 8a are inserted into the square pipe 3 of the deck plate 1a. One end of the long member 7 is placed on the upper surface of the square member 62.
At this time, even if a horizontal force is applied to the deck plate fixing bracket 6a so as to be separated from the square member 62, the upright portion 7a of the long member 7 is locked to the side surface of the square member 62. 6a does not move and one end of the long member 7 does not come off from the upper surface of the square member 62.
That is, since the upright portion 7a of the long member 7 is locked to the side surface of the square member 62, the movement of the deck plate fixing bracket 6a with respect to the direction away from the square member 62 is limited. The work of bridging the deck plate 1a between the square members 62, 62 installed in 66 can be performed safely.

One end of the long member 7 placed on the top surface of the square member 62 is nailed to the square member 62 using a nail hole 7c (see FIG. 1C). Thereafter, as shown in FIGS. 3B and 3C, the flat plate 13 is straddled on the upper surface of the long member 7 of the plurality of deck plate fixing brackets 6a.
As described above, when the deck plate fixing bracket 6 a is used, when the deck plate 1 a is bridged between the square members 62 and 62 installed on the H-shaped steels 66 and 66, the square pipe 3 is attached to the upper surface of the square member 62. There is no need to place it directly. Therefore, even when the cross section of the square pipe 3 has a vertically long shape in which the length in the width direction (direction parallel to the flat plate 2) is shorter than the length in the height direction (direction perpendicular to the flat plate 2). Unlike the case where the square pipe 3 is placed directly on the upper surface of the square member 62, the end of the square pipe 3 placed on the upper surface of the square member 62 swings within a vertical plane perpendicular to the longitudinal direction thereof. Therefore, the installation state of the deck plate 1a is stabilized, so that the worker can safely perform the work of installing the deck plate 1a.
Further, when the deck plate fixing bracket 6a is used, there is no need to process the end portion of the square pipe 3 constituting the deck plate 1a into a flat shape, so that there is an advantage that the manufacturing cost of the deck plate 1a is reduced. .

  Furthermore, the deck plate fixing metal fitting 6 a inserted into the square pipe 3 becomes slidable in the longitudinal direction of the square pipe 3 by loosening the bolt 4 screwed into the bolt hole 3 b of the square pipe 3. That is, the deck plate 1a in which the deck plate fixing brackets 6a and 6a are respectively inserted at both ends of the square pipe 3 is loosened by sliding the deck plate fixing brackets 6a and 6a in the longitudinal direction of the square pipe 3 by loosening the bolts 4. The entire length can be easily changed.

  Therefore, by using the deck plate fixing brackets 6a and 6a for the deck plate 1a spanned between the square members 62 and 62 installed on the H-shaped steels 66 and 66, the deck plate fixing is performed after the concrete slab is formed. By sliding the metal fittings 6a, 6a and reducing the overall length of the deck plate fixing metal fittings 6a, 6a, which is added to the deck plate 1a, the portion protruding from the square pipe 3 is shortened from the above concrete slab. The deck plate 1a can be easily taken out. Furthermore, if it is the said structure, since the whole length can be adjusted, the utilization range after collection | recovery is wide. Therefore, the deck plate 1a using the deck plate fixing bracket 6a is suitable for reuse.

  In the deck plate fixing bracket 6a of the present embodiment, the flat plate 13 is installed on the upper surface of the long member 7. However, the deck plate fixing bracket of the present invention is limited to such a structure. It is not a thing. For example, in the long member 7 of the plurality of deck plate fixing brackets 6a, the upper surface of the portion where the reinforcing member 8a is not provided on the lower surface 7b is fixed to the lower surface of the flat plate 13 by welding, bonding, rivets or screws. You can also.

Here, a modified example of the deck plate fixing bracket 6a will be described with reference to FIGS.
4 (a) and 4 (b) are perspective views showing a second modification of the deck plate fixing bracket 6a and the appearance of the reinforcing member, respectively. FIG. 4 (c) and FIG. It is the perspective view which showed the external appearance of the 3rd modification of the deck plate fixing metal fitting 6a, and its reinforcement member, respectively. FIGS. 5 (a) and 5 (b) are perspective views showing a fourth modification of the deck plate fixing bracket 6a and the appearance of the reinforcing member, respectively, and FIGS. 5 (c) and 5 (d). ) Are perspective views showing a fifth modified example of the deck plate fixing bracket 6a and the appearance of the reinforcing member.
The components shown in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIGS. 4 (a) and 4 (b), the deck plate fixing bracket 6c is a plurality of times instead of the standing plate 9 and the bracing plates 12a and 12b in the reinforcing member 8a of the deck plate fixing bracket 6a. A reinforcing member 8b having metal strips 14 and 15 in which standing portions 14a and 15a and bracing portions 14b and 15b are alternately formed so as to be bent is provided.
The band plates 14 and 15 are both half the width of the long member 7 and the long plate 10, and are arranged in parallel along the longitudinal direction of the long member 7, and the standing portions 14 a and 14 Both ends of the standing portions 14a and 15a are joined to the lower surface 7b of the long member 7 and the upper surface 10a of the long plate 10 so that 15a is perpendicular to the long member 7 and the long plate 10. . Further, the strips 14 and 15 are arranged such that the bracing portions 14 b and 15 b form an X shape in a side view, and one end of the strip 14 is joined to the upper surface 11 a of the connecting plate 11.

In the deck plate fixing bracket 6c having such a structure, the standing portions 14a and 15a of the strip plates 14 and 15 increase the compressive strength of the reinforcing member 8b in the direction perpendicular to the long member 7 and the long plate 10. While acting, in other directions, the bracing portions 14b and 15b act to increase the compressive strength of the reinforcing member 8b. Further, the connecting plate 11 has an effect of increasing the bending strength of the long member 7 where the reinforcing member 8b is not provided. Therefore, in the deck plate fixing bracket 6c, when the deck plate 1a is used for installing the deck plate 1a, the long member 7 and the reinforcing member 8b of the portion placed on the upper surface of the square member 62 are not easily damaged.
Furthermore, the place where the strips 14 and 15 are joined to the long member 7 and the long plate 10 is that the standing plate 9 and the bracing plates 12a and 12b are the long member 7 and the long plate 10 in the deck plate fixing bracket 6a. Therefore, the deck plate fixing bracket 6c can be manufactured at a lower cost than the deck plate fixing bracket 6a.

As shown in FIGS. 4C and 4D, the deck plate fixing bracket 6d includes a standing plate 9, a long plate 10, and a connecting plate 11 instead of the reinforcing member 8a in the deck plate fixing bracket 6a. And a reinforcing member 8c made of a plastic prismatic body 16a.
That is, the reinforcing member 8c is disposed at both ends in the longitudinal direction with respect to the prisms 16a installed on the lower surface 7b of the long member 7 instead of the bracing plates 12a and 12b and the four standing plates 9 in the reinforcing member 8a. A standing plate 9 and a connecting plate 11 are installed, and a long plate 10 is installed on the lower surface. The prismatic body 16a is fixed to the elongate member 7 with screws or nails (not shown).

In the deck plate fixing bracket 6d having such a structure, it is not necessary to perform the operation of joining the bracing plates 12a and 12b to the long member 7 and the long plate 10 unlike the deck plate fixing bracket 6a. Moreover, the material cost of the member which comprises the reinforcement member 8c is cheap, and the number of points of the member is also few. Therefore, the manufacturing cost is reduced.
Furthermore, in the deck plate fixing bracket 6d, the portion of the reinforcing member 8c that is near the one end in the longitudinal direction of the long member 7 and that is farthest from the long member 7 in the direction orthogonal to the lower surface 7b (that is, The connecting plate 11 that connects the end portion of the long plate 10 near the upright portion 7a) and the lower surface 7b of the long member 7b where the reinforcing member 8c is not provided, and the side in contact with the connecting plate 11 Due to the end of the prismatic body 16a, the bending strength of the portion of the long member 7 where the reinforcing member 8c is not provided is increased. Therefore, in the deck plate fixing bracket 6d, when the deck plate 1a is used for installing the deck plate 1a, the long member 7 and the reinforcing member 8c which are placed on the upper surface of the square member 62 are not easily damaged.
In addition, the reinforcing member 8c can be configured to include only the prismatic body 16a. In this case, the manufacturing cost can be further reduced as compared with the deck plate fixture 6c having the structure shown in FIG.

As shown in FIGS. 5A and 5B, the deck plate fixing bracket 6e has a narrower width than the long member 7 in the deck plate fixing bracket 6d, instead of the rectangular column 16a in the reinforcing member 8c. A metal reinforcing plate 17 is provided.
That is, the reinforcing member 8d of the deck plate fixing bracket 6e has a trapezoidal shape when viewed from the side, and is a standing plate at both ends in the longitudinal direction with respect to the reinforcing plate 17 joined to the lower surface 7b at the center in the width direction of the long member 7. 9 and the connecting plate 11 are installed, and the long plate 10 is installed on the lower surface.

In the deck plate fixing bracket 6e having such a structure, the reinforcing plate 17 acts to increase the compressive strength of the reinforcing member 8a in the direction perpendicular to the long member 7 and the long plate 10 and in other directions. In the deck plate fixing bracket 6e, the reinforcing member 8d is located on the side close to one end in the longitudinal direction of the long member 7 and is farthest from the long member 7 in the direction orthogonal to the lower surface 7b (that is, The end of the long plate 10 near the upright portion 7a) and the lower plate 7b of the long member 7b where the reinforcing member 8a is not provided, and the side in contact with the connecting plate 11 The end portion of the reinforcing plate 17 has an effect that the bending strength of the long member 7 where the reinforcing member 8a is not provided is increased. Therefore, in the deck plate fixing bracket 6e, when the deck plate 1a is used for installation, the long member 7 and the reinforcing member 8d of the portion placed on the upper surface of the square member 62 are not easily damaged.
Further, in the deck plate fixing bracket 6e, since it is not necessary to perform the operation of joining the bracing plates 12a and 12b to the long member 7 and the long plate 10 unlike the deck plate fixing bracket 6a, the manufacturing cost can be reduced. Can do.

As shown in FIGS. 5C and 5D, the deck plate fixing bracket 6f includes a reinforcing member 8e made of a wooden prismatic body 16b instead of the reinforcing member 8c in the deck plate fixing bracket 6d. It is characterized by that.
That is, the reinforcing member 8e has a structure in which the prismatic body 16b is fixed to the lower surface 7b of the long member 7 by screws or nails (not shown).
The deck plate fixture 6f having such a structure has an effect that the compressive strength in the direction perpendicular to the long member 7 and the long plate 10 and other directions is enhanced by the prismatic body 16b. Further, the end portion of the prismatic body 16b on the side close to the upright portion 7a of the long member 7 has an effect that the bending strength of the portion of the long member 7 where the reinforcing member 8e is not provided is increased. Therefore, in the deck plate fixing bracket 6f, when the deck plate 1a is used for installing the deck plate 1a, the long member 7 and the reinforcing member 8e of the portion placed on the upper surface of the square member 62 are not easily damaged.
Further, in the deck plate fixing bracket 6f, there is no need to perform the operation of joining the bracing plates 12a and 12b to the long member 7 and the long plate 10 unlike the deck plate fixing bracket 6a, and the reinforcing member 8c is configured. Since the material cost of the member is low and the number of the member is small, the manufacturing cost is reduced.

FIG. 6A is a perspective view showing the appearance of the deck plate fixing bracket 6g of Example 2 according to the embodiment of the present invention, and FIG. 6B shows two deck plate fixing brackets 6g and 6g at both ends. FIG. 6C is a diagram showing a state in which the deck plate 1a of Example 1 attached to each of the two is bridged between two H-shaped steels 66 and 66, and FIG. It is the figure which expanded and showed the upper part of the type steel.
In FIG. 6B and FIG. 6C, the flat plate 13 installed on the upper surface of the long member 7 of the deck plate fixing bracket 6g is omitted in order to avoid complication of the drawings. . The components shown in FIGS. 1 to 3 and FIGS. 8 to 12 are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIG. 6 (a), the deck plate fixing bracket 6g is the same as the deck plate fixing bracket 6a of the first embodiment except that the long member 7 in the portion where the reinforcing member 8a is not provided on the lower surface 7b is at a desired angle. It is characterized by being bent downward.
In the deck plate 1a in which a part of the deck plate fixing brackets 6g and 6g having such a structure is inserted into both ends of the square pipe 3, respectively, as shown in FIGS. 6 (b) and 6 (c), 2 When the long members 7 and 7 are placed on the upper surfaces of the square members 62 and 62 installed on the two H-shaped steels 66 and 66 by the deck receiving jigs 67 and 67, the deck plate 1a is lifted by the long members 7 and 7, respectively. A camber is formed.

At this time, the amount of the camber varies depending on the angle at which the end of the long member 7 is bent. That is, in the deck plate fixing bracket 6g, the amount of camber formed when attached to the deck plate 1a can be adjusted by changing the angle at which the end of the long member 7 is bent.
Further, the bolt 4 presses the lower surface of the deck plate fixing bracket 6g with its tip, so that the deck plate fixing bracket is moved in such a direction that the camber is eliminated by the weight of the concrete placed on the upper surface 2a of the flat plate 2. It has a function of preventing 6g and 6g from moving.

  Thus, in the deck plate 1a, the deck plate fixing brackets 6g, 6g attached to both ends do not move and the camber is not eliminated without permission, so that the safety during work is excellent. And it is not necessary to provide a supporting work at the time of formation of concrete slab. Thereby, the cost which construction of a concrete slab requires is reduced. Further, the deck plate 1a is variable in overall length by attaching the deck plate fixtures 6g and 6g to both ends. Thereby, it becomes possible to collect | recover easily from the formed concrete slab.

FIG. 7A is a front view showing the appearance of a deck plate 1b having a structure different from that of the deck plate 1a of the first embodiment, and FIG. 7B shows two deck plate fixing brackets 6a and 6a of the first embodiment. Is a view showing a state where the deck plate 1b attached to both ends is bridged between two H-shaped steels 66, 66, and FIG. 7 (c) shows one H-shaped steel 66 in FIG. 7 (b). It is the figure which expanded and showed the upper part of.
The components shown in FIGS. 1 to 3 and FIGS. 8 to 12 are denoted by the same reference numerals, and the description thereof is omitted.
As shown in FIG. 7A, in the deck plate 1b of the deck plate 1a according to the first embodiment, the flat plate 2 and the square pipe 3 are curved so that the central portion in the longitudinal direction is convex toward the flat plate 2 side. It is formed in a state.

  In the deck plate 1b having such a structure, as shown in FIGS. 7 (b) and 7 (c), two H-shaped steels are inserted with the deck plate fixing brackets 6a and 6a partially inserted at both ends. When the long members 7 and 7 are placed on the upper surfaces of the square members 62 and 62 installed on the deck receiving jigs 67 and 67 on the 66 and 66, respectively, a camber (removal) is formed at the center in the longitudinal direction. At this time, when the concrete is placed on the upper surface 2a of the flat plate 2 (see FIG. 7A), the deck plate fixing brackets 6a and 6a move freely, and the camber is eliminated. In order to prevent this, the lower surface of the deck plate fixing brackets 6a and 6a is pressed by the front end portion, thereby having an action of restricting their movement.

  As described above, the deck plate 1b has a structure in which the overall length is variable by attaching the deck plate fixing brackets 6a and 6a to both ends. Thereby, collection | recovery from the formed concrete slab becomes easy. In addition, in the deck plate 1b, a camber is formed when it is bridged between the two H-shaped steels 66, 66. Therefore, a support work for supporting the central portion in the longitudinal direction is installed during the construction of the concrete slab. There is no need to do. Therefore, the construction cost of the concrete slab is reduced.

  INDUSTRIAL APPLICABILITY The present invention is applicable when a concrete slab is constructed on a floor or a ceiling of a multi-layered building in a structure using reinforced concrete or steel reinforced concrete as a structural material.

  DESCRIPTION OF SYMBOLS 1a, 1b ... Deck plate 2 ... Flat plate 2a ... Upper surface 2b ... Lower surface 3 ... Square pipe 3a ... Lower surface 3b ... Bolt hole 4 ... Bolt 5 ... Base 5a ... Bolt hole 6a-6g ... Deck plate fixing metal fitting 7 ... Long member 7a ... Upright portion 7b ... Lower surface 7c ... Nail holes 8a to 8e ... Reinforcing member 9 ... Erecting plate 10 ... Long plate 10a ... Upper surface 10b ... Lower surface 11 ... Connecting plate 11a ... Upper surface 12a, 12b ... Bracing plate 13 ... Flat plate 14 ... Strip plate 14a ... Standing portion 14b ... Bracing portion 15 ... Strip plate 15a ... Standing portion 15b ... Bracing portion 16a, 16b ... Square column 17 ... Reinforcing plate 51 ... Deck plate 52, 53 ... Formwork member 54, 55 ... Flat plate 54a, 55a ... Upper surface 54b, 55b ... Lower surface 56, 57 ... Square pipe 56a, 57a ... Open end 56b, 57b ... Flat end 56c, 57c Upper surface 58 ... Long member 59 ... Slab 60 ... Supporting work 61 ... Beam formwork 62 ... Square material 63 ... Sleeper 64 ... Beam 65 ... Slab 66 ... H-shaped steel 66a ... Web 66b ... Flange 67 ... Deck receiving jig 68 ... Angle material 68a ... Flat part 68b ... Upright part 68c ... Mounting part 69a ... Mounting bolt 69b ... Nut 70 ... Reinforcement plate 71 ... Tilt adjusting bolt 72a ... Bolt hole 72b ... Long hole 73 ... Deck plate 74 ... Square pipe 74a ... Upper surface 75 ... flat plate

Claims (7)

A flat plate whose upper surface becomes a molding surface when placing concrete, and a plurality of square pipes fixed to the lower surface of the flat plate, and when forming a concrete slab on the floor or ceiling of a building, It is a deck plate fixing bracket used for a part of the deck plate,
A long metal member having a rectangular shape in plan view;
A reinforcing member provided on the first surface at a desired interval from one longitudinal end of the long member,
The reinforcing member is a deck plate fixing bracket, wherein at least a part of the reinforcing member can be inserted together with the long member from the other end in the longitudinal direction of the long member into the square pipe.   2. The deck plate fixing bracket according to claim 1, wherein the elongate member has an upright portion formed so that the one end is bent at a right angle toward the first surface.   3. The deck plate fixing bracket according to claim 1, wherein a portion of the elongate member where the reinforcing member is not provided is bent toward the first surface by a desired angle. 4. .   The reinforcing member is provided with a portion that is farthest from the long member in a direction orthogonal to the first surface at an end portion near the one end in the longitudinal direction of the long member, and the reinforcing member is provided. The deck plate fixing bracket according to any one of claims 1 to 3, further comprising a connecting plate that connects the first surface of a portion that is not provided.   The deck plate fixing bracket according to any one of claims 1 to 3, wherein the reinforcing member is made of a plastic or wooden prism. The said square pipe by which the deck plate fixing bracket of any one of Claims 1 thru | or 5 is each inserted in both ends,
The square pipe is fixed to the lower surface, and the flat plate,
Bolt holes formed in the lower surface of the square pipe;
A deck plate comprising: a bolt that is screwed into the bolt hole so that a tip portion can protrude into the square pipe. The deck plate according to claim 6, wherein the square pipe and the flat plate are formed in a curved state so that a central portion in a longitudinal direction is convex toward the flat plate.

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