JP2022168506A - Concrete flow preventive frame - Google Patents

Abstract

To provide a concrete flow preventive frame allowing concrete slab to be quickly constructed at a construction site by eliminating manpower and time required for reinforcement bar arrangement work and welding work.SOLUTION: A concrete flow preventive frame 10 is formed with a horizontal plate 12 extending in a longitudinal direction with a specific area and a vertical plate 13 in a vertical direction with a specific area, comprising: a first to an eighth lower reinforcement bar 16a to 16h and a first to an eighth upper reinforcement bar 17a to 17h positioned above an upper surface 22 of the horizontal plate 12 and aligned apart with a specific space in a width direction and extending in the longitudinal direction parallel to the horizontal plates 12; a first to an n-th upper horizontal reinforcement bar and a first to an n-th lower horizontal reinforcement bar fixed on the lower reinforcement bars 16a to 16h and the upper reinforcement bars 17a to 17h and aligned apart with a specific space in the longitudinal direction and extending in a width direction as intersecting the lower reinforcement bars 16a to 16h and the upper reinforcement bars 17a to 17h; and a first to an eighth connection member connecting and fixing the first to eighth lower reinforcement bar and the eighth upper reinforcement bar on the horizontal plate.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete dam frame member for blocking leakage of poured concrete.

Disclosed is a concrete run-off frame material that is attached with a plurality of support members for supporting the load of concrete placed on the upper surface of a deck plate in a tensioned state from the inside, and that blocks leakage of the placed concrete. (see Patent Document 1). This concrete stop frame member is formed of a horizontal plate extending in the front-rear direction and having a predetermined area, and a vertical plate extending vertically from the front end of the horizontal plate and having a predetermined area. When the support members are oriented vertically so that the front and back plate surfaces face both sides, and one joint end surface is in surface contact with the upper surface of the beam on which the peripheral edge of the deck plate is placed. The length of the support member is set so that the other joint end surface of the frame plate is in surface contact with the inner surface of the upper end portion of the vertical plate of the frame plate.

JP 2011-246922 A

When constructing a concrete slab for a reinforced building, a reinforced concrete building, or a reinforced concrete building at a construction site using the concrete dam frame material disclosed in Patent Document 1, the concrete dam frame material and a plurality of The deck plates with reinforcing bars are transported to the construction site, both ends of the deck plates with reinforcing bars are placed on the H-shaped steel flanges (beams), and the deck plates with reinforcing bars are connected to the width Arrange in direction. Next, a concrete stop frame material is installed around the deck plate with reinforcing bars.

In the installation of the concrete stop frame material disclosed in Patent Document 1, one end of the horizontal plate is placed on the H-shaped steel flange (beam), and one end of the horizontal plate is spot-welded to the H-shaped steel flange. Weld and fix. One of the joint end faces of the support members is welded and fixed to the inner surface of the vertical plate of the concrete sill frame material by fillet welding, and the other joint end face of the support members is welded and fixed to the flange of the H-beam steel by fillet welding. Further, a plurality of reinforcing bars are arranged inside the horizontal plate and the vertical plate, and the reinforcing bars are welded and fixed to each other, and the reinforcing bars are welded and fixed to the concrete stop frame material.

When using the concrete dam frame material disclosed in Patent Document 1, one end of the horizontal plate is welded and fixed to the flange of the H-shaped steel, and one joint end face of the support member is the vertical plate of the concrete dam frame material. The supporting members are welded and fixed to the inner surface, and the other joint end faces of the support members are welded and fixed to the flange of the H-shaped steel. In addition to being fixed, these reinforcing bars are welded and fixed to the concrete sill frame material, so that it is necessary to arrange the reinforcing bars at the construction site, and complicated welding work is required. and the concrete slab cannot be built quickly. In addition, there is a danger that a fire may occur unexpectedly at a construction site due to sparks caused by welding. Furthermore, short beads are likely to occur in welding operations at construction sites, and there are cases where the weld strength is not ensured due to the short beads.

An object of the present invention is to construct a concrete slab for a reinforced building, a reinforced concrete building, or a reinforced steel-framed concrete building at a construction site without requiring arranging or welding of reinforcing bars at the construction site. To provide a concrete stop frame material capable of saving labor and time for bar arrangement work and welding work and quickly constructing a concrete slab. Another object of the present invention is to provide a concrete stop frame member capable of preventing accidental fires caused by welding sparks at construction sites. Another object of the present invention is to prevent the occurrence of short beads during welding work at construction sites, and to prevent deformation, collapse, and peeling of reinforcing bars after concrete is placed due to insufficient welding strength. It is to provide materials.

The premise of the present invention for solving the above problems is a horizontal plate extending in the front-rear direction and having a predetermined area that is long in the width direction, and a horizontal plate that extends vertically from the front end of the horizontal plate and has a predetermined area that is long in the width direction. It is a concrete stop frame member formed from a vertical plate and arranged around the first to n-th deck plates with reinforcing bars arranged in the width direction to construct a concrete slab.

The feature of the present invention based on the above premise is that the concrete flow stop frame members are positioned above the upper surface of the horizontal plate, arranged in the width direction at a predetermined distance, and extending in the front-rear direction in parallel with the horizontal plate. 1st to n-th upper reinforcing bars located above the 1st to n-th lower reinforcing bars, arranged in the width direction at a predetermined distance apart from the n-th lower reinforcing bars, and extending in the front-rear direction in parallel with the 1st to n-th lower reinforcing bars. , fixed to the first to n-th lower reinforcing bars and the first to n-th upper reinforcing bars, arranged in the front-rear direction at a predetermined distance, intersecting the lower reinforcing bars and the upper reinforcing bars and extending in the width direction It has n horizontal reinforcing bars and connecting members for connecting and fixing the 1st to nth lower reinforcing bars and the 1st to nth upper reinforcing bars to the horizontal plate.

As an example of the present invention, the first to n-th horizontal reinforcing bars extend in the width direction by intersecting the first to n-th lower reinforcing bars, and the first to n-th upper reinforcing bars. 1st to n-th upper horizontal reinforcing bars extending in the width direction and crossing the 1st to n-th lower reinforcing bars of the 1st to n-th lower horizontal reinforcing bars The crossing portions of the first to n-th upper horizontal reinforcing bars intersecting with the first to n-th upper reinforcing bars are welded and fixed to the first to n-th upper reinforcing bars.

As another example of the present invention, the connection member includes a horizontal leg welded and fixed to the horizontal plate, and a vertical leg extending vertically from one end of the horizontal leg and welded and fixed to the lower reinforcing bar and the upper reinforcing bar. It is an L-shaped steel material having a part.

As another example of the present invention, L-shaped steel members are arranged in the width direction on a horizontal plate, and the horizontal legs of the L-shaped steel members arranged in the width direction are welded and fixed to the upper surface of the horizontal plate so that they are arranged in the width direction. The intersections of the vertical legs of the L-shaped steel member that intersect with the lower and upper reinforcing bars are welded and fixed to the lower and upper reinforcing bars.

As another example of the present invention, L-shaped steel members are arranged in the front-rear direction on a horizontal plate, and the horizontal legs of the L-shaped steel members arranged in the front-rear direction are welded and fixed to the upper surface of the horizontal plate so that they are arranged in the front-rear direction. The intersections of the vertical legs of the L-shaped steel member that intersect with the lower and upper reinforcing bars are welded and fixed to the lower and upper reinforcing bars.

As another example of the present invention, the height dimension upward from the upper surface of the horizontal plate of the first to n-th lower reinforcing bars of the concrete run-off frame material is the lower end reinforcement of the deck plate with the first to n-th reinforcing bars. The height dimension upward from the upper surface of the metal plate is adjusted to be substantially the same, and the height dimension upward from the upper surface of the horizontal plate of the 1st to n-th upper reinforcing bars of the concrete sill frame material is the 1st to n-th It is adjusted to be substantially the same as the height dimension upward from the upper surface of the metal plate of the upper end reinforcement of the deck plate with reinforcing bars.

As another example of the present invention, the first to n-th lower reinforcing bars of the concrete sill frame material are positioned directly above or directly below the lower end reinforcing bars of the deck plate with first to n-th reinforcing bars. The height dimension upward from the upper surface of the horizontal plate of the n lower reinforcing bar is adjusted, and the 1st to nth upper reinforcing bars of the concrete sill frame material are directly above or directly below the upper end reinforcing bar of the deck plate with 1st to nth bar arrangement. The height dimension upward from the upper surface of the horizontal plate of the 1st to nth upper reinforcing bars is adjusted so that it is positioned at .

As another example of the present invention, the horizontal plate of the concrete stop frame is arranged on the upper surface of the receiving plate connected to the beam and fixed to the receiving plate by fixing means other than welding.

According to the concrete runoff frame material according to the present invention, the first to n-th lower reinforcing bars are located above the upper surface of the horizontal plate, are arranged in the width direction at a predetermined distance, and extend in the front-rear direction in parallel with the horizontal plate. the first to n-th upper reinforcing bars located above the first to n-th lower reinforcing bars, arranged in the width direction at a predetermined distance apart, and extending in the front-rear direction in parallel with the first to n-th lower reinforcing bars; 1st to n-th horizontal reinforcing bars fixed to the 1st to n-th lower reinforcing bars and the 1st to n-th upper reinforcing bars, arranged in the longitudinal direction with a predetermined distance, intersecting the lower reinforcing bars and the upper reinforcing bars and extending in the width direction and a connecting member for connecting and fixing the first to n-th lower reinforcing bars and the first to n-th upper reinforcing bars to the horizontal plate, and the first to n-th lower reinforcing bars, the first to n-th upper reinforcing bars, the first ~ Since the n-th horizontal reinforcing bar is arranged (installed) in the concrete dam frame material, there is no need to arrange (install) multiple reinforcing bars on the concrete dam frame material at the construction site, and the concrete dam frame material There is no need to arrange multiple reinforcing bars to the concrete, welding the arranged reinforcing bars together, or welding the reinforcing bars to the concrete anchor frame material. Slabs can be built quickly. Since the concrete stop frame material can omit welding work at the construction site, it is possible to prevent accidental fires at the construction site due to welding sparks. Concrete anchor frame materials can prevent the occurrence of short beads during welding work at construction sites, and can prevent deformation and collapse of concrete anchor frames and peeling of reinforcing bars after concrete is placed due to insufficient welding strength. can. Concrete run-stop frame material consists of 1st to n-th lower reinforcing bars, 1st to n-th upper reinforcing bars, and 1st to n-th upper reinforcing bars pre-arranged (installed) on deck plates with 1st to n-th reinforcement arrangements and concrete run-off frame materials A strong reinforced concrete slab can be constructed with the ~nth horizontal reinforcing bar and the poured concrete.

The first to n-th horizontal reinforcing bars cross the first to n-th lower reinforcing bars and extend in the width direction, and the first to n-th horizontal reinforcing bars extend in the width direction while intersecting the first to n-th upper reinforcing bars. The intersections of the first to n-th upper horizontal reinforcing bars and the n-th upper horizontal reinforcing bars and intersecting the first to n-th lower reinforcing bars of the first to n-th lower horizontal reinforcing bars are welded and fixed to the first to n-th lower reinforcing bars. Concrete stop frame materials in which the intersections of upper horizontal reinforcing bars intersecting with the 1st to nth upper reinforcing bars are welded and fixed to the 1st to nth upper reinforcing bars are the first to To quickly construct a concrete slab by omitting the arrangement (installation) of the n-th lower reinforcing bar, the 1st to n-th upper reinforcing bars, the 1st to n-th lower horizontal reinforcing bars, and the 1st to n-th upper horizontal reinforcing bars. 1st to nth lower reinforcing bars, 1st to nth upper reinforcing bars, 1st to nth upper reinforcing bars, 1st to nth upper reinforcing bars pre-arranged (installed) in deck plates with 1st to nth reinforcing bars and concrete run-off frame materials Strong reinforced concrete slabs can be constructed with transverse reinforcing bars and poured concrete.

The connecting member is an L-shaped steel material having a horizontal leg portion welded and fixed to a horizontal plate and a vertical leg portion extending vertically from one end of the horizontal leg portion and welded and fixed to the lower reinforcing bar and the upper reinforcing bar. The horizontal leg of the L-shaped steel material is welded and fixed to the horizontal plate of the concrete stop frame material, and the vertical leg part of the L-shaped steel material is welded and fixed to the lower reinforcing bar and the upper reinforcing bar. It is possible to firmly fix the 1st to nth lower horizontal reinforcing bars, the 1st to nth upper reinforcing bars, and the 1st to nth horizontal reinforcing bars to the concrete stop frame material through the concrete stop frame material at the construction site. It is possible to omit the arrangement (installation) of reinforcing bars to the concrete slab, and it is possible to construct the concrete slab quickly. Construct a sturdy reinforced concrete slab with the 1st to n-th lower reinforcing bars, 1st to n-th upper reinforcing bars, and 1st to n-th horizontal reinforcing bars pre-arranged (installed) in the material and the cast concrete. be able to.

L-shaped steel members are arranged in the width direction on a horizontal plate, the horizontal legs of the L-shaped steel members arranged in the width direction are welded and fixed to the upper surface of the horizontal plate, and the lower reinforcing bars of the vertical legs of the L-shaped steel members arranged in the width direction Concrete dam frame members, in which the intersections of the upper reinforcing bars are welded and fixed to the lower and upper reinforcing bars, have horizontal legs of multiple L-shaped steel members lined up in the width direction welded to the horizontal plates of the concrete dam frame material. By welding and fixing the vertical legs of a plurality of L-shaped steels lined up in the width direction to the lower reinforcing bar and the upper reinforcing bar, the first to n-th lower horizontal reinforcing bars and the first to n-th horizontal reinforcing bars are connected through the L-shaped steels. The n-upper reinforcing bars and the first to n-th horizontal reinforcing bars can be firmly fixed to the concrete dam frame material, and the arrangement (installation) of the reinforcing bars to the concrete dam frame material at the construction site can be omitted. The concrete slab can be constructed quickly, and furthermore, the first to n-th reinforcements are arranged (installed) in advance on the concrete run-off frame material via the deck plates with reinforcements and the L-shaped steel materials lined up in the width direction. A strong reinforced concrete slab can be constructed from the 1st to nth lower reinforcing bars, the 1st to nth upper reinforcing bars, the 1st to nth horizontal reinforcing bars, and the placed concrete.

L-shaped steel members are arranged in the longitudinal direction on a horizontal plate, the horizontal legs of the L-shaped steel members arranged in the longitudinal direction are welded and fixed to the upper surface of the horizontal plate, and the lower reinforcing bars of the vertical legs of the L-shaped steel members arranged in the longitudinal direction Concrete dam frame members, in which the crossing parts of the upper reinforcing bars are welded and fixed to the lower and upper reinforcing bars, have horizontal legs of multiple L-shaped steel members lined up in the front-rear direction welded to the horizontal plates of the concrete dam frame material. The vertical legs of a plurality of L-shaped steel members fixed and arranged in the front-rear direction are welded and fixed to the lower reinforcing bar and the upper reinforcing bar, so that the first to n-th lower horizontal reinforcing bars and the first to n-th horizontal reinforcing bars are connected through the L-shaped steel members. The n-upper reinforcing bars and the first to n-th horizontal reinforcing bars can be firmly fixed to the concrete dam frame material, and the arrangement (installation) of the reinforcing bars to the concrete dam frame material at the construction site can be omitted. The concrete slab can be constructed quickly, and furthermore, the first to n-th reinforcement-arranged deck plates and the L-shaped steel members lined up in the front-rear direction are pre-arranged (installed) on the concrete run-off frame material. A strong reinforced concrete slab can be constructed from the 1st to nth lower reinforcing bars, the 1st to nth upper reinforcing bars, the 1st to nth horizontal reinforcing bars, and the placed concrete.

The height dimension from the upper surface of the horizontal plate of the 1st to nth lower reinforcing bars of the concrete run-off frame material is the height from the upper surface of the metal plate of the lower end bar of the deck plate with 1st to nth reinforcement. The height dimension from the upper surface of the horizontal plate of the 1st to nth upper reinforcing bars of the concrete run-off frame material is adjusted to be approximately the same as the dimension, and the metal plate of the upper end bar of the deck plate with 1st to nth reinforcing bars The concrete dam frame material adjusted to be approximately the same height from the top surface of the concrete dam frame material has a height dimension from the top surface of the horizontal plate of the 1st to nth upper reinforcing bars of the concrete dam frame material If the upper end reinforcement of the deck plate with 1st to nth reinforcement is higher than the height dimension upward from the upper surface of the metal plate, the concrete run-off frame material of the placed concrete and the 1st to nth reinforcement are attached. Although the covering dimension to the deck plate cannot be matched, the height dimension upward from the upper surface of the horizontal plate of the 1st to nth upper reinforcing bars is the upper surface of the metal plate of the upper end bar of the deck plate with 1st to nth reinforcement. Since it is adjusted to be substantially the same as the height dimension from the top to Concrete can be cast with the same covering dimension on the first to n-th deck plates with reinforcing bars. In the concrete run-off frame material, the 1st to nth lower reinforcing bars are positioned at substantially the same height as the lower end reinforcing bars of the 1st to nth reinforcing deck plates, and the 1st to nth upper reinforcing bars are positioned at the 1st to 1st Since it is located at substantially the same height as the upper end reinforcement of the deck plate with n reinforcement, the 1st to nth reinforcements that are arranged (installed) in advance on the deck plate with 1st to nth reinforcement and the concrete run-off frame material. A strong reinforced concrete slab can be constructed from the lower reinforcing bars, the 1st to nth upper reinforcing bars, the 1st to nth horizontal reinforcing bars, and the poured concrete.

From the upper surface of the horizontal plate of the 1st to nth lower reinforcing bars so that the 1st to nth lower reinforcing bars of the concrete run-off frame material are positioned directly above or directly below the lower end bars of the 1st to nth reinforcing deck plates The first to n-th upper reinforcing bars of the concrete run-off frame material are positioned directly above or directly below the upper end reinforcing bars of the deck plates with the first to n-th reinforcing bars. Concrete run-off frame material whose height dimension upward from the upper surface of the horizontal plate of the n-th upper reinforcing bar is adjusted, the 1st to n-th upper reinforcing bars of the concrete run-off frame material have the 1st to n-th reinforcing bars If it is located above the upper end reinforcement of the deck plate, it is not possible to match the covering dimension of the cast concrete with the concrete dam frame material and the deck plate with 1st to nth reinforcing bars, but the concrete dam frame material Since the 1st to n-th upper reinforcing bars are located directly above or directly below the upper end reinforcement of the deck plate with 1st to n-th reinforcement, the concrete covering frame material and the deck plate with 1st to n-th reinforcement are covered with concrete. The dimensions can be matched, and concrete can be cast with the same covering dimension on the concrete stop frame material and the first to n-th deck plates with reinforcing bars. The concrete dam frame material has the 1st to n-th lower reinforcing bars of the concrete dam frame material located directly above or directly below the bottom reinforcement of the 1st to n-th reinforcing deck plates, and the first concrete dam frame material Since the ~ nth upper reinforcing bar is located directly above or directly below the upper end reinforcement of the deck plate with the 1st ~ nth reinforcement arrangement, the reinforcement is pre-arranged (installed) on the deck plate with the 1st ~ nth reinforcement arrangement and the concrete run-off frame material ), the 1st to n-th lower reinforcing bars, the 1st to n-th upper reinforcing bars, the 1st to n-th horizontal reinforcing bars and the placed concrete can construct a strong reinforced concrete slab.

The horizontal plate of the concrete dam frame material is placed on the top surface of the receiving plate connected to the beam, and the concrete dam frame material fixed to the receiving plate by fixing means other than welding is the horizontal plate of the concrete dam frame material. Since the receiving plate is fixed by a fixing means other than welding, the welding work between the horizontal plate and the receiving plate and the welding work between the horizontal plate of the concrete stop frame and the flange (beam) of the H-shaped steel are unnecessary. Labor and time for work can be saved, and a concrete slab can be constructed quickly. Concrete dam frames can omit the welding work between the horizontal plate and the receiving plate at the construction site and the welding work between the horizontal plate of the concrete dam frame and the flange (beam) of the H-beam. It is possible to reliably prevent the accidental occurrence of a fire at a construction site due to a fire, and to prevent the occurrence of a short bead in welding work at the construction site.

The perspective view of the concrete runoff frame material shown as an example. The side view of a concrete stop frame material. The perspective view of the deck plate with reinforcement shown as an example. FIG. 3 is a perspective view showing an example of a state in which a concrete run-off frame member and a deck plate with reinforcing bars are installed on an H-shaped steel flange (beam). FIG. 2 is a side view showing an example of a state in which a concrete run-off frame member and a deck plate with reinforcing bars are installed on an H-shaped steel flange (beam). FIG. 6 is a side view similar to FIG. 5 after placing concrete; FIG. 4 is a perspective view showing another example of a state in which a concrete run-off frame member and a deck plate with reinforcing bars are installed on an H-shaped steel flange (beam). The side view which shows another example of the state which installed the concrete stop frame material and the deck plate with reinforcement arrangement to the flange (beam) of H-shaped steel. FIG. 8 is a side view similar to FIG. 7 after placing concrete;

The details of the concrete stop frame member according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1, which is a perspective view of a concrete stop frame member 10 shown as an example. 2 is a side view of the concrete flow stop frame member 10, and FIG. 3 is a perspective view of reinforcing bar deck plates 11a to 11d shown as an example. 1 and 3, arrow A indicates the front-rear direction, arrow B indicates the vertical direction, and arrow C indicates the width direction.

The concrete dam frame material 10 (concrete dam frame material with reinforcing bars) is composed of a plurality of deck plates 11a to 11d with first to fourth reinforcing bars arranged in the width direction for constructing a reinforced concrete slab 46 (floor slab). (first to n-th deck plates with reinforcing bars) to block leakage of the concrete 45 placed on the deck plates 11a to 11d, and the concrete dam frame placed on the deck plates 11a to 11d A reinforced concrete slab 46 (floor slab) is reinforced by the material reinforcing bars 15 . The concrete stop frame member 10 is manufactured in advance at an assembly plant and transported to the construction site.

The concrete stop frame member 10 is composed of a concrete receiving frame 14 made of a horizontal plate 12 having a predetermined area and a vertical plate 13 having a predetermined area, and reinforcing bars 15 for the concrete stop frame member. The reinforcing bars 15 for the concrete run-off frame material include first to eighth lower reinforcing bars 16a to 16h (first to nth lower reinforcing bars) and first to eighth upper reinforcing bars 17a to 17h (first to nth upper reinforcing bars). , 1st to 5th lower horizontal reinforcing bars 18a to 18e (1st to nth lower horizontal reinforcing bars) (horizontal reinforcing bars) and 1st to 5th upper horizontal reinforcing bars 19a to 19e (1st to nth upper horizontal reinforcing bars) (horizontal reinforcing bars) and first to eighth connecting members 20a to 20h.

1 and 2, the first to fourth reinforcing bar deck plates 11a to 11d, eight first to eighth lower reinforcing bars 16a to 16h, eight first to eighth upper reinforcing bars 17a to 17h, five first to fifth lower horizontal reinforcing bars 18a to 18e, five first to fifth upper horizontal reinforcing bars 19a to 19e, and first to eighth connecting members 20a to 20h are shown. , the number of deck plates with reinforcing bars, the number of lower reinforcing bars, the number of upper reinforcing bars, the number of lower horizontal reinforcing bars, the number of upper horizontal reinforcing bars, and the number of connecting members are not limited, and the reinforced concrete slab 46 to be constructed in the building to be constructed The number of deck plates, the number of reinforcing bars, and the number of connecting members are appropriately determined depending on the size of the (floor slab), the strength required for the reinforced concrete slab 46, and the like.

The horizontal plate 12 is made of an iron plate having a predetermined thickness. The horizontal plate 12 is shaped like a rectangle that is long in the width direction and extends in the front-rear direction. The horizontal plate 12 is placed on a receiving plate 44 which will be described later. The longitudinal length, thickness, and area of the horizontal plate 12 are appropriately determined according to the size of the reinforced concrete slab 46 (floor slab) to be constructed, the strength required of the reinforced concrete slab 46, and the like.

The vertical plate 13 is made of an iron plate having a predetermined thickness. The vertical plate 13 is integrated with the horizontal plate 12, is formed in a rectangular shape elongated in the width direction, and extends vertically from the front end of the horizontal plate 12. As shown in FIG. The vertical plate 13 serves as a breakwater that prevents the poured concrete 45 from leaking out. The vertical length, thickness, and area of the vertical plate 13 are appropriately determined according to the size of the reinforced concrete slab 46 (floor slab) to be constructed and the covering dimension of the concrete 45 . An upper end portion 21 of the vertical plate 13 is partially bent toward the horizontal plate 12 at a substantially right angle.

For the first to eighth lower reinforcing bars 16a to 16h, a deformed steel bar (deformed reinforcing bar) made from a drawn iron bar and having a plurality of nodes (ribs) on its peripheral surface is used. The first to eighth lower reinforcing bars 16a to 16h are positioned above the upper surface 22 of the horizontal plate 12 with a predetermined distance therebetween, and are arranged in the width direction at equal intervals (a predetermined distance). The lower reinforcing bars 16a to 16h extend in parallel with each other and in parallel with the horizontal plate 12 in the longitudinal direction. These lower reinforcing bars 16a to 16h are positioned below the upper end 21 of the vertical plate 13. As shown in FIG.

The longitudinal length L1 of the first to eighth lower reinforcing bars 16a to 16h is in the range of 2 to 7 m. The lower reinforcing bars 16a to 16h have a length dimension L1 longer than a length dimension L2 of the horizontal plate 12 in the front-rear direction, and extend from the rear end portion 23 of the horizontal plate 12 in the front-rear direction. The longitudinal length L1 and thickness of the lower reinforcing bars 16a to 16h are appropriately determined according to the size of the reinforced concrete slab 46 (floor slab) to be constructed, the strength required of the reinforced concrete slab 46, and the like.

For the first to eighth upper reinforcing bars 17a to 17h, a deformed steel bar (deformed reinforcing bar) made from a drawn iron bar and having a plurality of nodes (ribs) on its peripheral surface is used. The first to eighth upper reinforcing bars 17a to 17h are positioned upward by a predetermined distance from the upper surface 22 of the horizontal plate 12 and separated by a predetermined distance upward from the first to eighth lower reinforcing bars 16a to 16h. They are arranged at equal intervals (separated by a predetermined dimension). The upper reinforcing bars 17a to 17h extend in parallel with each other and in parallel with the horizontal plate 12 and the first to eighth lower reinforcing bars 16a to 16h in the longitudinal direction. These upper reinforcing bars 17a to 17h are positioned below the upper end portion 21 of the vertical plate 13. As shown in FIG.

The longitudinal length L3 of the first to eighth upper reinforcing bars 17a to 17h is longer than the longitudinal length L1 of the lower reinforcing bars 16a to 16h, and is in the range of 2 to 8 m. The upper reinforcing bars 17a to 17h have a length dimension L3 longer than the length dimension L2 of the horizontal plate 12 in the front-rear direction, and extend from the rear end portion 23 of the horizontal plate 12 in the front-rear direction. The longitudinal length L3 and thickness of the upper reinforcing bars 17a to 17h are appropriately determined according to the size of the reinforced concrete slab 46 (floor slab) to be constructed, the strength required of the reinforced concrete slab 46, and the like. The longitudinal length L1 of the first to eighth lower reinforcing bars 16a to 16h and the longitudinal length L3 of the first to eighth upper reinforcing bars 17a to 17h may be substantially the same. The longitudinal length L1 of the first to eighth lower reinforcing bars 16a to 16h may be longer than the longitudinal length L3 of the first to eighth upper reinforcing bars 17a to 17h.

For the first to fifth lower horizontal reinforcing bars 18a to 18e, a deformed steel bar (deformed reinforcing bar) made from a drawn iron bar and having a plurality of nodes (ribs) on its peripheral surface is used. The first to fifth lower horizontal reinforcing bars 18a to 18e are positioned above the upper surface 22 of the horizontal plate 12 with a predetermined distance therebetween, and are arranged in the front-rear direction at equal intervals (at predetermined distances). The lower horizontal reinforcing bars 18a-18e are parallel to each other and parallel to the horizontal plate 12, cross the first to eighth lower reinforcing bars 16a-16h, and extend in the width direction. These lower horizontal reinforcing bars 18 a - 18 e are located below the upper end 21 of the vertical plate 12 .

The first to fifth lower horizontal reinforcing bars 18a to 18e are arranged directly below the first to eighth lower reinforcing bars 16a to 16h, but may be arranged directly above the first to eighth lower reinforcing bars 16a to 16h. , directly below and directly above the first to eighth lower reinforcing bars 16a to 16h. The length dimension L4 in the width direction of the first to fifth lower horizontal reinforcing bars 18a to 18e is in the range of 5 to 20 m. The length dimension and thickness dimension in the width direction L4 of the first to fifth lower horizontal reinforcing bars 18a to 18e are appropriately determined according to the size of the reinforced concrete slab 46 (floor slab) to be constructed, the strength required for the reinforced concrete slab 46, and the like. . The 1st to 5th lower horizontal reinforcing bars 18a to 18e are firmly welded and fixed to the 1st to 8th lower reinforcing bars 16a to 16h by welding at the intersections where the 1st to nth lower reinforcing bars 16a to 16 cross and abut. .

For the first to fifth upper horizontal reinforcing bars 19a to 19e, a deformed steel bar (deformed reinforcing bar) made from a drawn iron bar and having a plurality of nodes (ribs) on its peripheral surface is used. The first to fifth upper horizontal reinforcing bars 19a to 19e are positioned upward by a predetermined distance from the upper surface 22 of the horizontal plate 12 and separated by a predetermined distance upward from the first to fifth lower horizontal reinforcing bars 18a to 18e. They are arranged at regular intervals (separation of a predetermined dimension) in the direction. The upper horizontal reinforcing bars 19a to 19e are parallel to each other, parallel to the horizontal plate 12 and the first to fifth lower horizontal reinforcing bars 18a to 18e, and extend in the width direction across the first to eighth upper reinforcing bars 17a to 17h. ing. These upper horizontal reinforcing bars 19a to 19e are located below the upper end 21 of the vertical plate 12. As shown in FIG.

The first to fifth upper horizontal reinforcing bars 19a to 19e are arranged directly below the first to eighth upper reinforcing bars 17a to 17h, but may be arranged directly above the first to eighth upper reinforcing bars 17a to 17h. , directly below and directly above the first to eighth upper reinforcing bars 17a to 17h. The longitudinal length L5 of the first to fifth upper horizontal reinforcing bars 19a to 19e is substantially the same as the widthwise length of the lower horizontal reinforcing bars 18a to 18e, and is in the range of 5 to 20 m. . The length L5 in the width direction and the thickness of the upper horizontal reinforcing bars 19a to 19e are appropriately determined according to the size of the reinforced concrete slab 46 (floor slab) to be constructed, the strength required of the reinforced concrete slab 46, and the like. The first to fifth upper horizontal reinforcing bars 19a to 19e are firmly welded and fixed to the first to eighth upper reinforcing bars 17a to 17h by welding at the intersections where the first to eighth upper reinforcing bars 17a to 17h are in cross contact. .

The first to eighth connecting members 20a to 20h are made of steel and connect and fix the first to eighth lower reinforcing bars 16a to 16h and the first to eighth upper reinforcing bars 17a to 17h to the horizontal plate 12. As shown in FIG. The connection members 20a to 20h include a horizontal leg portion 24 extending in the front-rear direction parallel to the horizontal plate 12, and a vertical leg portion extending in the vertical direction parallel to the vertical plate 13 from one end (front end) of the horizontal leg portion 24. It is an L-shaped steel material having a part 25. These connecting members 20a to 20h (L-shaped steel materials) are arranged at equal intervals (predetermined distances) in the width direction on the upper surface 22 of the horizontal plate 12, and are arranged at equal intervals (predetermined distances) in the front-rear direction on the upper surface 22 of the horizontal plate. spaced apart).

The horizontal legs 24 of the connecting members 20a to 20h (L-shaped steel materials) arranged in the width direction and the front-rear direction are placed on the upper surface 22 of the horizontal plate 12, and the horizontal legs 24 are firmly welded to the horizontal plate 12. It is fixed by welding. In the connecting members 20a to 20h arranged in the width direction and the front-rear direction, the crossing portions of the vertical legs 25, which are in cross contact with the first to eighth lower reinforcing bars 16a to 16h, are welded to the first to eighth lower reinforcing bars 16a. 16h, and the crossing portions of the vertical legs 25, which are in cross contact with the first to eighth upper reinforcing bars 17a to 17h, are firmly welded to the first to eighth upper reinforcing bars 17a to 17h by welding. Fixed.

The deck plates 11a to 11d with reinforcing bars are used for constructing reinforced concrete slabs 46 (floor slabs) of reinforced concrete buildings, reinforced concrete buildings, and reinforced concrete buildings. The reinforcing deck plates 11a to 11d are formed of a metal base 26 having a predetermined area and extending in the front-rear direction, and a reinforcing bar truss unit 28 (reinforcing bar) installed on the upper surface 27 of the metal base 26. As shown in FIG. In constructing the reinforced concrete slab 46 (floor slab), in addition to the reinforcing deck plates 11a to 11d shown in FIG. Not only can it be used, but it can also be used with any kind of reinforcing deck plate that will be developed in the future.

In FIG. 3, two reinforced concrete truss units 28 are installed on the metal base 26, but there are no particular restrictions on the area of the metal base 26 or the number of reinforced concrete slabs 28. The area of the metal base 26 and the number of reinforcing steel truss units 28 are appropriately determined according to the size and strength required of the reinforced concrete slab 46 .

An iron plate is used for the metal base 26, but other metal plates such as an aluminum plate, a stainless steel plate, and a titanium plate may be used instead of the iron plate. The metal base 26 has a substantially flat upper surface 27 and a substantially flat lower surface 29, and has both side edges 30 extending in the front-rear direction and both side edges 31 extending in the width direction. Upper and lower surfaces 27 and 29 of the metal base 26 are plated. Between both side edges 30 of the metal base 26 (iron plate), a plurality of ridges 32 (longitudinal strips) extending in the front-rear direction and protruding upward from the upper surface 27 of the metal base 26 are formed. The ridges 32 are made by bending the metal base 26 .

A first engaging portion 33 is formed on one side edge portion 30 of the metal base 26 (iron plate), and a second engaging portion 34 is formed on the other side edge portion 30 of the metal base 26. . The first engaging portion 33 is made by bending one side edge 30 of the metal base 26 toward the upper surface 27 of the metal base 26 . The second engaging portion 34 is made by bending the other side edge 30 of the metal base 26 toward the lower surface 29 of the metal base 26 . By fitting the second engaging portion 34 of the other metal base 26 into the first engaging portion 33 of one of the metal bases 26 and engaging the engaging portions 33 and 34 with each other, the first to fourth distributions are obtained. The scored deck plates 11a-11d can be connected.

The reinforcing bar truss units 28 are arranged on the upper surface 27 of the metal base 26, are arranged in parallel in the width direction while being equally spaced apart (separated by a predetermined dimension) in the width direction, and extend in the front-rear direction. These reinforcing bar truss units 28 are formed from one top reinforcement 35, two (pair) bottom reinforcements 36, and two (pair) first lattice reinforcement 37a and second lattice reinforcement 37b. Deformed steel bars (deformed rebars) are used for the upper end reinforcement 35, the lower end reinforcement 36, and the first and second lattice reinforcements 37a and 37b. It is The thicknesses of the top reinforcement 35, the bottom reinforcement 36, and the first and second lattice reinforcements 37a and 37b are appropriately determined according to the size of the reinforced concrete slab 46 (floor slab) to be constructed and the strength required of the reinforced concrete slab 46.

The upper end reinforcement 35 is located between the ridges 32 that are adjacent (adjacent) in the width direction, and extends straight in the front-rear direction with a predetermined distance upward from the upper surface 29 of the iron plate base 27 . In the reinforcing bar truss units 28, the longitudinal lengths of the top rebars 35 arranged in the width direction are substantially the same, and the top rebars 35 are arranged in parallel in the width direction while being spaced apart by a predetermined distance in the width direction.

The bottom reinforcement 36 is positioned between the adjacent (adjacent) ridges 32 in the width direction (positioned at a predetermined distance inward from the ridges 32), and is positioned outward of the lattice muscles 37a and 37b in the width direction. It is located on the side of the top muscle 35 and on both sides in the width direction of the top muscle 35 . These bottom reinforcements 36 extend straight in the front-rear direction from the upper surface 27 of the iron plate base 26 at a predetermined distance upward. In the reinforcing bar truss units 28, the longitudinal lengths of the bottom reinforcements 36 aligned in the width direction are substantially the same, and the bottom reinforcements 36 are aligned in parallel in the width direction while being spaced apart by a predetermined distance in the width direction.

The first and second lattice muscles 37 a and 37 b are positioned between the ridges 32 adjacent (adjacent) in the width direction (positioned at a predetermined distance inward from the ridges 32 ), and are located on the upper surface of the metal base 26 . It is positioned between 27 and the upper end muscle 35 and extends in the front-rear direction while repeating wavy bending (undulation) in the vertical direction. The lattice muscles 37a and 37b are formed by a convex portion 38 positioned on the side of the upper end bar 35, a concave portion 40 positioned on the upper surface 27 side of the iron plate base 26, and an inclination in the front-rear direction between the convex portion 38 and the concave portion 40. and an intermediate portion 39 extending inward. The first and second lattice muscles 37a and 37b are arranged symmetrically in the width direction with the top muscle 35 interposed therebetween.

The convex portions 38 of the first and second lattice muscles 37 a and 37 b are bent upward to be in contact with the peripheral surface of the upper end muscle 35 . The crossing portions of the protrusions 38 of the first and second lattice muscles 37a and 37b, which are in cross contact with the top reinforcement 35, are firmly welded and fixed to the top reinforcement 35 by spot welding. Intermediate portions 39 of the first and second lattice muscles 37 a and 37 b are positioned inward (inner side) in the width direction of the bottom muscle 36 , and the intersecting portion of the intermediate portion 39 that crosses and abuts the bottom muscle 36 is the bottom muscle 36 . It is firmly welded and fixed by spot welding.

The concave portions 40 of the lattices 37a and 37b are bent downward, and are bent outward in the width direction so as to be parallel to the upper surface 27 of the metal base 26 ( bent outward in the width direction). The concave portion 40 has a bent portion 41 that is bent outward in the width direction and extends in the width direction. The bent portions 41 form an arc so as to protrude outward in the width direction, and are positioned on the protruding strips 32 of the metal base 12 . The bent portion 41 crosses and abuts the ridges 32 of the iron plate base 26 at two points, and the crossing portions crossing and abutting the ridges 32 are firmly welded and fixed to the ridges 32 by spot welding.

In the concrete run-off frame member 10, the height dimension upward from the upper surface 22 of the horizontal plate 12 of the first to eighth lower reinforcing bars 16a to 16h is the lower end reinforcement 36 of the first to fourth reinforcing deck plates 11a to 11d. The height dimension upward from the upper surface 27 of the metal plate 26 is adjusted to be substantially the same as the height dimension upward from the upper surface 22 of the horizontal plate 12 of the first to eighth upper reinforcing bars 17a to 17h. The height dimension of the top reinforcements 35 of the deck plates 11a to 11d with first to fourth bar arrangement is adjusted to be substantially the same as the height dimension upward from the upper surface 27 of the metal plate 26. As shown in FIG.

Further, in the concrete run-off frame member 10, the first to eighth lower reinforcing bars 16a to 16h are arranged directly above or below the lower end reinforcing bars 36 of the first to fourth reinforcing deck plates 11a to 11d. The height dimension upward from the upper surface 22 of the horizontal plate 12 of the 1st to 8th lower reinforcing bars 16a to 16h is adjusted, and the 1st to 8th upper reinforcing bars 17a to 17h are arranged in the deck plates 11a to 11d with the 1st to 4th reinforcing bars. The height dimension upward from the upper surface 22 of the horizontal plate 12 of the first to eighth upper reinforcing bars 17a to 17h is adjusted so that they are positioned directly above or below the upper end reinforcement 35 of the upper reinforcing bars 17a to 17h.

FIG. 4 is a perspective view showing an example of a state in which the concrete dam frame member 10 and the deck plates 11a to 11d with reinforcing bars are installed on the flange 43 (beam) of the H-shaped steel 42, and FIG. 5 is a concrete dam. 4 is a side view showing an example of a state in which the frame member 10 and the deck plates 11a to 11d with bar arrangement are installed on the flange 43 (beam) of the H-shaped steel 42. FIG. FIG. 6 is a side view similar to FIG. 5 after concrete 45 has been placed. FIGS. 4 to 6 show a state in which the concrete run-off frame member 10 is installed on the side of the end portions 31 of the reinforcing deck plates 11a to 11d arranged in the width direction.

An example of the procedure for constructing the reinforced concrete slab 46 (floor slab) using the concrete stop frame member 10 and the reinforcing bar deck plates 11a to 11d is as follows. First, the concrete stop frame member 10 is manufactured in an assembly plant (concrete stop frame member manufacturing process). The reinforcing deck plates 11a to 11d are also manufactured at the assembly factory. In the concrete dam frame material manufacturing process, a layout drawing (design drawing) for the concrete dam frame member 10 is created based on the scale of the reinforced concrete slab 46 (floor slab) of the building to be constructed, and the concrete flow is carried out according to the prepared layout drawing. A retaining frame member 10 is manufactured.

In the step of manufacturing a concrete stop frame material, a concrete receiving frame 14 formed from a horizontal plate 12 and a vertical plate 13 is made according to the dimensions of the layout drawing (design drawing). The first to eighth connecting members 20a to 20h (L-shaped steel materials) are arranged at positions according to the layout drawing (design drawing) of the horizontal plate 12 of the concrete receiving frame 14, and the horizontal leg portions 24 of the connecting members 20a to 20h are arranged. is fixed to the upper surface 22 of the horizontal plate 12 by welding.

Next, the reinforcing bars 15 for the concrete stop frame material are made according to the layout drawing (design drawing) to be arranged (installed) in the concrete receiving frame 14 . As described above, the reinforcing bars 15 for the concrete run-off frame material are the first to eighth lower reinforcing bars 16a to 16h, the first to eighth upper reinforcing bars 17a to 17h, and the first to fifth lower horizontal reinforcing bars 18a to 18e. (horizontal reinforcing bars), first to fifth upper horizontal reinforcing bars 19a to 19e (horizontal reinforcing bars), and first to eighth connecting members 20a to 20h (first to L-shaped steel materials). 5 The crossing portions of the lower horizontal reinforcing bars 18a to 18e intersecting with the first to eighth lower reinforcing bars 16a to 16h are welded and fixed to the first to eighth lower reinforcing bars 16a to 16h, and the first to fifth upper horizontal reinforcing bars 19a are fixed. 19e are assembled by welding and fixing the intersecting portions of the first to eighth upper reinforcing bars 17a to 17h to the first to eighth upper reinforcing bars 17a to 17h by welding.

The first to eighth lower reinforcing bars 16a to 16h and the first to eighth upper reinforcing bars 17a to 17h of the assembled reinforcing bars 15 for the concrete run-off frame material extend in the front-rear direction in parallel with the horizontal plate 12, and the first to eighth reinforcing bars of the reinforcing bars 15 The reinforcing bars 15 are arranged in the concrete receiving frame 14 so that the first to fifth lower horizontal reinforcing bars 18a to 18e and the first to fifth upper horizontal reinforcing bars 19a to 19e extend in the width direction parallel to the horizontal plate 12, and they are connected. The crossing portions of the vertical legs 25 of the members 20a to 20h, which are in cross contact with the first to eighth lower reinforcing bars 16a to 16h, are welded and fixed to the first to eighth lower reinforcing bars 16a to 16h, and the connecting members 20a are connected. 20h of the vertical legs 25 are welded and fixed to the first to eighth upper reinforcing bars 17a to 17h by welding the crossing portions that are in cross contact with the first to eighth upper reinforcing bars 17a to 17h.

A plurality of concrete run-off frame members 10 manufactured at the assembly plant are transported to the construction site of the building, and a plurality of reinforcing bar deck plates 11a to 11d manufactured at the assembly plant are transported to the construction site of the building. . At a construction site, a reinforced concrete slab 46 is made by a deck plate installation process with reinforcing bars, a concrete stop frame installation process, and a concrete pouring process.

In the reinforcing deck plate installation process, the reinforcing deck plates 11a to 11d transported to the construction site are lifted by a crane, and the reinforcing decks are placed on one flange 43a (beam) of the H-shaped steel 42 of the building. Both ends 31 of the metal base 26 of the plates 11a to 11d are placed (arranged), and first engaging portions 33 and second engaging portions formed on the side edges 30 of the deck plates 11a to 11 with reinforcement. 34 are engaged to connect the reinforcing deck plates 11a to 11d, and the reinforcing deck plates 11a to 11d are arranged in the width direction between the flanges 43 (beams) of the H-shaped steel 42.

In the reinforcing deck plate installation process, the first engaging portion 33 and the second engaging portion 34 formed on the side edge portions 30 of the reinforcing deck plates 11a to 11d are engaged on the ground to remove the reinforcing bars. The deck plates 11a to 11d with reinforcement are connected, a predetermined lifting jig is attached to the connected deck plates with reinforcement 11a to 11d, the connected deck plates with reinforcement 11a to 11d are lifted by a crane, and the building H Both ends 31 of the metal base 26 of the reinforcing deck plates 11a to 11d are placed (arranged) on one flange 43a of the shaped steel 42 (the flange 43a of the H-shaped steel 42 extending inwardly of the building) (beam). ).

Although not shown, at least one of the top reinforcement 35, the bottom reinforcement 36, and the first and second lattice reinforcements 37a and 37b of the reinforcing bar truss unit 28 (preferably the bottom reinforcement 36 and the first and second lattice reinforcements 37a, 37b) The lattice muscles 37a, 37b) may be connected with binding wires (wires) to a plurality of horizontal or hoop muscles extending in the width direction and arranged in the vertical direction. The other flange 43b of the H-section steel 42 of the building (the flange 43b of the H-section steel 42 extending outward from the building) (beam) has a predetermined area extending outward from the other flange 43b and extending in the width direction. A receiving plate 44 is attached. The base end of the receiving plate 44 is firmly welded and fixed to the other flange 43b.

The reinforcing deck plates 11a to 11d are installed (constructed) between the flanges 43 (beams) of the H-shaped steel 42, or the deck plates 11a to 11d with reinforcing bars connected on the ground are connected to the flanges 43 of the H-shaped steel 42. After being installed (constructed) between (beams), the concrete stanchion frame member 10 is installed on the outside (periphery) of both ends 31 of the metal base 26 of the deck plates 11a to 11d with reinforcing bars. An installation process is performed. In the step of installing the concrete stop frame member, the horizontal plate 12 of the conveyed concrete stop frame member 10 is placed on the upper surface of the receiving plate 44 extending outward from the other flange 43b.

When the horizontal plate 12 of the concrete stop frame member 10 is placed on the upper surface of the receiving plate 44, the rear end portion 23 of the horizontal plate 12 is attached to the other flange 43b (beam) of the H-shaped steel 42 (deck plates 11a to 11d with bar arrangement). outside of both ends 31 of the metal base 26), the first to eighth lower reinforcing bars 16a to 16h are substantially at the same height as the lower reinforcing bars 35 of the reinforcing deck plates 11a to 11d, and the lower reinforcing bars 36 The first to eighth upper reinforcing bars 17a to 17h are located on the lateral sides in the width direction, and are substantially at the same height as the upper reinforcing bars 35 of the reinforcing deck plates 11a to 11d, and are positioned on the lateral sides of the upper reinforcing bars 35 in the width direction. do.

After placing the horizontal plate 12 on the upper surface of the receiving plate 44, the horizontal plate 12 is firmly fixed to the receiving plate 44 by a predetermined fixing means (not shown) other than welding. Tacks, nails, and screws can be used as fixing means. When rivets or nails are used as fixing means, the rivets or nails are driven into the horizontal plate 12 and the receiving plate 44 from the upper surface of the horizontal plate 12 using a riveting machine or a nailing machine. When screws are used as fixing means, the screws are screwed into the horizontal plate 12 and the receiving plate 44 from the upper surface of the horizontal plate 12 using a screwing machine.

As shown in FIGS. 4 to 6, the concrete run-off frame member 10 is installed and fixed to the flanges 43 (beams) of the H-shaped steel 42 in a state adjacent to both ends 31 of the metal base 26 . In some cases, the first to eighth lower reinforcing bars 16a to 16h of the concrete dam frame member 10 and the bottom reinforcements 36 of the deck plates 11a to 11d with reinforcing bars are connected by binding wires (wires). The first to eighth upper reinforcing bars 17a to 17h of the frame member 10 and the upper reinforcing bars 36 of the reinforcing deck plates 11a to 11d may be connected by binding wires (wires).

FIG. 7 is a perspective view showing another example of the state in which the concrete run-off frame member 10 and the deck plates 11a to 11d with reinforcing bars are installed on the flange 43 (beam) of the H-shaped steel 42, and FIG. FIG. 11 is a side view showing another example of a state in which the stop frame member 10 and the deck plates 11a to 11d with bar arrangement are installed on the flange 43 (beam) of the H-shaped steel 42; FIG. 9 is a side view similar to FIG. 7 after concrete 45 has been placed. FIGS. 7 to 9 show a state in which the concrete flow stop frame member 10 is installed on the side portion 30 side of the deck plates 11a to 11d with reinforcing bars arranged in the width direction.

After installing the concrete stop frame member 10 on the side of both ends 31 of the deck plates 11a to 11d with reinforcement, the concrete stop frame member 10 is placed on the side 30 of the deck plate with reinforcement 11a to 11d. Install. The steps of manufacturing the concrete stop frame material, manufacturing the deck plate with reinforcement, and installing the deck plate with reinforcement are as described above.

Deck plates with reinforcement installed on both sides of a reinforced concrete slab 46 (floor slab) in the process of construction after completion of installation of the concrete run-off frame material 10 on the side of both ends 31 of the deck plates 11a to 11d with reinforcement. The concrete stop frame member 10 is installed on the outside (periphery) of the side portion 30 of the metal base 26 of 11a, 11d (concrete stop frame member installation process). In the step of installing the concrete stop frame member, the horizontal plate 12 of the concrete stop frame member 10 is placed on a receiving plate extending outward from the other flange 43b on which the side portion 30 of the reinforcing deck plate 11a, 11d is placed. 44 is placed on the upper surface.

When the horizontal plate 12 of the concrete stop frame 10 is placed on the upper surface of the receiving plate 44, the rear end portion 23 of the horizontal plate 12 is attached to the other flange 43 (beam) of the H-shaped steel 42 (deck plates 11a, 11d with bar arrangement). The first to eighth lower reinforcing bars 16a to 16h are directly above the lower reinforcing bars 35 of the reinforcing deck plates 11a to 11d and on the width direction side of the lower reinforcing bars 35. The first to eighth upper reinforcing bars 17a to 17h are positioned right above the upper reinforcing bars 36 of the reinforcing deck plates 11a to 11d and to the sides of the upper reinforcing bars 36 in the width direction.

After placing the horizontal plate 12 on the upper surface of the receiving plate 44, the horizontal plate 12 is firmly fixed to the receiving plate 44 by a predetermined fixing means (tack, nail, screw) other than welding. As shown in FIGS. 7 to 9, the concrete run-off frame member 10 is attached to the side portions 30 of the metal base 26 of the deck plates 11a and 11d with reinforcing bars installed on both sides of the reinforced concrete slab 46 (floor slab) under construction. is installed and fixed to the flange 43 (beam) of the H-shaped steel 42 in a state adjacent to the .

The horizontal plate 12 of the concrete stop frame member 10 is installed and fixed to the flange 43 (beam) (receiving plate 44) of the H-shaped steel 42, and the concrete stop frame member 10 is arranged in a state adjacent to both ends 31 of the metal base 26. At the same time, after placing the concrete stop frame member 10 adjacent to the side portion 30 of the metal base 26, the concrete placing process is performed. In the concrete placing step, concrete 45 is placed from above the reinforcing bar truss unit 28 toward the upper surface 27 of the metal base 26 with a predetermined covering dimension, and the concrete 45 is cured for a predetermined period.

When the concrete 45 is placed on the reinforcing deck plates 11a to 11d, the leakage of the concrete 45 is blocked by the concrete sill frame member 10, and the metal base 26, the reinforcing bar truss unit 28, and the reinforcing bars 15 for the concrete sill frame member. is buried in the concrete 45. A reinforced concrete slab 46 (floor slab) is completed when the curing period of the concrete 45 elapses.

The concrete run-off frame member 10 is positioned above the upper surface 22 of the horizontal plate 12 and arranged with a predetermined distance in the width direction. 16h (first to n-th lower reinforcing bars), located above the first to eighth lower reinforcing bars 16a to 16h, arranged in the width direction at a predetermined distance apart, parallel to the first to eighth lower reinforcing bars 16a to 16h 1st to 8th upper reinforcing bars 17a to 17h (first to n-th upper reinforcing bars) extending in the front-rear direction, and fixed to the 1st to 8th lower reinforcing bars 16a-16h and arranged in the front-rear direction at a predetermined distance. , first to fifth lower horizontal reinforcing bars 18a to 18e (first to n-th lower horizontal reinforcing bars) extending in the width direction across the first to eighth lower reinforcing bars 16a to 16h, and the first to eighth upper reinforcing bars 17a. 17h, arranged at a predetermined distance in the front-rear direction, crossing the first to eighth upper reinforcing bars 17a to 17h and extending in the width direction. 1st to 8th connecting members 20a to 20h (L-shaped steel material ), and has already been manufactured at the assembly plant and has already been rebars 15 for the concrete sill frame material (first to eighth lower rebars 16a to 16h, first to eighth upper rebars 17a to 17h, first to fifth lower Since the horizontal reinforcing bars 18a to 18e and the first to fifth upper horizontal reinforcing bars 19a to 19e) are arranged (installed) in the concrete stop frame 10 (concrete receiving frame 14), the concrete stop frame at the construction site 10 (concrete receiving frame 14), there is no need to arrange (install) a plurality of reinforcing bars. Welding to the retaining frame material 10 becomes unnecessary, labor and time for bar arrangement work and welding work can be saved, and the reinforced concrete slab 46 (floor slab) can be quickly constructed.

Since the horizontal plate 12 of the concrete stop frame member 10 (concrete receiving frame 14) and the receiving plate 44 are fixed by fixing means (tacks, nails, screws) other than welding, the horizontal plate 12 and the receiving plate 44 and the welding work between the horizontal plate 12 and the flange 43 (beam) of the H-shaped steel 42 are not required, and the labor and time of the welding work can be saved, and the reinforced concrete slab 46 (floor slab ) can be built quickly.

The concrete stop frame member 10 has horizontal legs 24 of a plurality of first to eighth connecting members 20a to 20h (L-shaped steel members) arranged in the width direction and the front-rear direction. The vertical legs 25 of the first to eighth connecting members 20a to 20h (L-shaped steel materials) arranged in the width direction and the front-rear direction are fixed by welding to the horizontal plate 12 of the first to eighth lower reinforcing bars 16a to 16h (first to nth lower reinforcing bars) and first to eighth upper reinforcing bars 17a to 17h (first to nth upper reinforcing bars) are welded and fixed by welding, so that the connecting members 20a to 20h (L-shaped steel materials ), the 1st to 8th lower reinforcing bars 16a to 16h, the upper reinforcing bars 17a to 17h, the 1st to 5th lower horizontal reinforcing bars 18a to 18e, and the 1st to 5th upper horizontal reinforcing bars 19a to 19e It can be firmly fixed to the material 10 (concrete receiving frame 14).

The concrete stop frame member 10 is composed of deck plates 11a to 11d with first to n-th reinforcing bars and reinforcing bars 15 for the concrete stop frame material (first to n-th 8 lower reinforcing bars 16a to 16h, first to eighth upper reinforcing bars 17a to 17h, first to fifth lower horizontal reinforcing bars 18a to 18e, first to fifth upper horizontal reinforcing bars 19a to 19e) and cast concrete 45 A reinforced concrete slab 46 (floor slab) made of sturdy reinforced concrete can be constructed (constructed).

The concrete run-off frame member 10 has a height dimension upward from the upper surface 22 of the horizontal plate 12 of the first to eighth upper reinforcing bars 17a to 17h arranged thereon so that the deck plates 11a to 11a with the first to fourth reinforcing bars are arranged. 11d, when the height dimension from the upper surface 27 of the metal plate 26 of the upper end reinforcement 36 is higher than the height dimension upward, the concrete run-off frame member 10 of the placed concrete 45 and the deck plates 11a to 11d with the first to fourth reinforcement arrangements 11d, but the height dimension above the top surface 22 of the horizontal plate 12 of the first to eighth upper reinforcing bars 17a to 17h is the same as that of the first to fourth deck plates 11a to 11d. The height dimension from the upper surface 28 of the metal plate 26 of the upper end reinforcement 36 is adjusted to be substantially the same, or the first to eighth upper reinforcing bars 17a to 17h of the concrete run-off frame member 10 are arranged in the first to fourth positions. Since it is located directly above or directly below the upper end reinforcement 36 of the deck plates 11a to 11d with creases, it is possible to match the covering dimension of the concrete 45 with respect to the concrete run-off frame member 10 and the first to fourth deck plates 11a to 11d with reinforcing bars 11a to 11d. Thus, the concrete 45 can be cast with the same covering dimension on the concrete runoff frame member 10 and the deck plates 11a to 11d with the first to fourth reinforcing bars.

Concrete stop frame material 10 consists of a concrete receiving frame 14 made of a horizontal plate 12 with a predetermined area and a vertical plate 13 with a predetermined area, and reinforcing bars 15 (first to eighth lower reinforcing bars 16a to 16h, 1st to 8th upper reinforcing bars 17a to 17h, 1st to 5th lower horizontal reinforcing bars 18a to 18e, and 1st to 5th upper horizontal reinforcing bars 19a to 19e) are welded and fixed to the concrete sill frame material 10 at the construction site. It suffices to construct the concrete stop frame member 10 between the flanges 43 (beams) of the H-shaped steel 42, and the welding operation between the horizontal plate 12 and the receiving plate 44 at the construction site and the horizontal movement of the concrete stop frame member 10 are carried out. Since the welding work between the plate 12 and the flange 43 (beam) of the H-shaped steel 42 can be omitted, it is possible to prevent accidental fires at the construction site due to welding sparks, and the welding work at the construction site. It is possible to prevent the occurrence of short beads in the joints, and to prevent the deformation and collapse of the concrete anchor frame 10 and the peeling of the reinforcing bars 15 for the concrete anchor frame after concrete is placed due to insufficient welding strength.

10 Concrete runoff frame material 11a to 11d 1st to 4th deck plate with reinforcement (deck plate with 1st to nth reinforcement)
12 Horizontal plate 13 Vertical plate 14 Concrete receiving frame 15 Reinforcement bar for concrete sill frame material 16a to 16h 1st to 8th lower reinforcing bars (1st to nth lower reinforcing bars)
17a to 17h 1st to 8th upper reinforcing bars (1st to nth upper reinforcing bars)
18a to 18e 1st to 5th lower horizontal reinforcing bars (1st to nth lower horizontal reinforcing bars)
19a to 19e 1st to 5th upper horizontal reinforcing bars (1st to nth upper horizontal reinforcing bars)
20a to 20h 1st to 8th connecting members (1st to nth connecting members)
21 upper end 22 upper surface 23 rear end 24 horizontal leg 25 vertical leg 26 metal base 27 side edge 28 reinforcing bar truss unit 29 upper surface 30 side edge 31 end edge 32 ridge 33 first engaging portion 34 second Engagement portion 35 Upper end muscle 36 Lower end muscle 37a, b First and second lattice muscles 38 Protruding portion 39 Intermediate portion 40 Recessed portion 41 Bent portion 42 H-shaped steel 43 Flange 43a One flange 43b The other flange 44 Receiving plate 45 Concrete 46 Reinforced concrete Slab (floor slab)

Claims (8)

A concrete slab is constructed by comprising a horizontal plate extending in the front-rear direction and having a predetermined area long in the width direction and a vertical plate extending vertically from the front end of the horizontal plate and having a predetermined area long in the width direction. In the concrete run-off frame material arranged around the deck plates with first to n-th reinforcing bars arranged in the width direction for
the first to n-th lower reinforcing bars are positioned above the upper surface of the horizontal plate, are arranged in the width direction at a predetermined distance apart from each other, and extend in the front-rear direction in parallel with the horizontal plate; first to n-th upper reinforcing bars located above the first to n-th lower reinforcing bars, arranged in the width direction at a predetermined distance apart, and extending in the front-rear direction in parallel with the first to n-th lower reinforcing bars; 1st to n-th horizontal bars fixed to the 1st to n-th lower reinforcing bars and the 1st to n-th upper reinforcing bars, arranged in the longitudinal direction at a predetermined distance, and extending in the width direction across the lower reinforcing bars and the upper reinforcing bars A concrete run-off frame member, comprising reinforcing bars, and connecting members for connecting and fixing the first to n-th lower reinforcing bars and the first to n-th upper reinforcing bars to the horizontal plate. The first to n-th horizontal reinforcing bars extend in the width direction across the first to n-th lower reinforcing bars, and the first to n-th upper reinforcing bars extend in the width direction. 1st to n-th upper horizontal reinforcing bars extending to and crossing the 1st to n-th lower reinforcing bars of the 1st to n-th lower horizontal reinforcing bars. 2. The method according to claim 1, wherein the intersections of the first to n-th upper reinforcing bars which are fixed by welding and intersect with the first to n-th upper reinforcing bars are fixed by welding to the first to n-th upper reinforcing bars. Concrete stop frame material. The connecting member has a horizontal leg portion welded and fixed to the horizontal plate, and a vertical leg portion extending vertically from one end of the horizontal leg portion and welded and fixed to the lower reinforcing bar and the upper reinforcing bar. The concrete stop frame material according to claim 1 or 2, which is an L-shaped steel material. The L-shaped steel members are arranged in the width direction on the horizontal plate, the horizontal legs of the L-shaped steel members arranged in the width direction are welded and fixed to the upper surface of the horizontal plate, and the vertical legs of the L-shaped steel members arranged in the width direction are fixed. 4. The concrete sill frame material according to claim 3, wherein the crossing portion of the portion crossing the lower reinforcing bar and the upper reinforcing bar is welded and fixed to the lower reinforcing bar and the upper reinforcing bar. The L-shaped steel members are arranged in the longitudinal direction on the horizontal plate, and the horizontal legs of the L-shaped steel members arranged in the longitudinal direction are welded and fixed to the upper surface of the horizontal plate, and the vertical legs of the L-shaped steel members arranged in the longitudinal direction. 5. The concrete sill frame material according to claim 3 or 4, wherein the crossing portion of the portion crossing the lower reinforcing bar and the upper reinforcing bar is welded and fixed to the lower reinforcing bar and the upper reinforcing bar. The height dimension above the upper surface of the horizontal plate of the first to n-th lower reinforcing bars of the concrete run-stop frame material is above the upper surface of the metal plate of the lower end reinforcement of the deck plate with the first to n-th reinforcing bars. and the height dimension upward from the upper surface of the horizontal plate of the first to n-th upper reinforcing bars of the concrete anchor frame material is adjusted to the height dimension with the first to n-th reinforcement 6. The concrete run-off frame member according to claim 1, wherein the height dimension of the top reinforcement of the deck plate upward from the upper surface of the metal plate is adjusted to be substantially the same. The first to n-th lower reinforcing bars of the first to n-th lower reinforcing bars are horizontally arranged so that the first to n-th lower reinforcing bars of the concrete run-off frame material are positioned directly above or directly below the lower end bars of the first to n-th reinforcing deck plates. The height dimension upward from the upper surface of the plate is adjusted, and the 1st to nth upper reinforcing bars of the concrete sill frame material are positioned directly above or directly below the upper end reinforcing bars of the 1st to nth reinforcing deck plates. 6. The concrete run-off frame material according to claim 1, wherein the height dimension upward from the upper surface of the horizontal plate of the first to n-th upper reinforcing bars is adjusted as above. 8. The concrete according to any one of claims 1 to 7, wherein the horizontal plate of the concrete stop frame is arranged on the upper surface of the receiving plate connected to the beam and fixed to the receiving plate by a fixing means other than welding. Flow stop frame material.

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