KR20050072038A - Truss attaching deck plates and manufacturing method of the same - Google Patents

Abstract

The present invention constitutes a trussed deck plate which does not generate a weld trace on the lower surface side. The upper reinforcing bars 1 and the lower reinforcing bars 3 and 3 are arranged in an isosceles triangle shape, and the corrugated reinforcing bars 6 and 6 are arranged in eight shapes, respectively, to form a truss 10 (Fig. 1A). The connecting rod 34 is accommodated in the groove 18 of the upper base plate 12, the leg 9 of the truss 10 is disposed on the protrusion 17 (FIG. 1A), and both ends of the connecting rod 34 are disposed. It protrudes by the predetermined length L from the edges 14 and 14 of the upper base plate. The base plate 12 is disposed between the upper and lower electrodes 42 and 32, and electricity is applied to fix the connecting rod 34, the upper base plate 12, and the leg 9 of the truss 10 integrally. (Fig. 1b). The lower base plate 23 is superimposed on the lower surface 16 of the upper base plate 12, and both the lower latch edges 20 and 29 and the upper latch edge 19 of the two base plates 12 and 23. , 28) are fitted to form a truss attachment deck plate 40 (FIG. 1C).

Description

Truss attaching deck plates and manufacturing method of the same

The present invention relates to a truss attachment deck plate used as formwork for floor slabs in concrete structures.

Various truss or flat trusses are fixedly mounted on the base plate (deck plate) by welding, so that the "truss deck deck plate" having the role of flooring formwork and reinforcement aid of flooring reinforcement of concrete structures is proposed. It became. In this case, the truss and the deck plate are fixed integrally and also need to be produced automatically so that they are fixed by welding. Therefore, welding traces (welding traces) remained on the lower surface of the base plate.

Since the deck plate is installed even after the concrete is poured, the lower surface of the base plate constitutes the lower surface of the floor slab as it is. Therefore, usually, the lower surface of the slab is a ceiling with various boards or hanging ceilings, and when the ceiling is completed, the lower surface of the floor slab (lower surface of the base plate) has not been exposed to the finished surface.

However, in the non-ceilinged structure, the bottom surface (bottom surface of the base plate) of the floor slab is exposed as it is, and in this case, the traces of the welded surface appeared. Therefore, in order to erase the traces of the weld, there is a problem that a subsequent process such as wiping or painting the lower surface of the base plate or attaching various sheets or boards in the state of the pre-completed truss deck plate is required.

Furthermore, in order to solve the above problem, the applicant welds the truss leg and the base plate at the upper surface side of the base plate and the position away from the upper surface in advance, so that the deck plate does not leave a trace of welding on the lower surface side of the base plate. Has proposed a method for the preparation of JP-A-8-151718.

Accordingly, the present invention has been proposed to solve the above-mentioned problems, and an object thereof is to form a welding line in a manufacturing line in which electrodes are disposed above and below a base plate, without leaving a weld trace.

In addition, the present invention has a further object to divide the base plate up and down, and to weld the truss only with the upper base plate, so that the upper and lower base plates can be integrally connected without welding each other.

The present invention solves the conventional problems because the base plate is divided up and down to latch each other to form the base plate.

MEANS TO SOLVE THE PROBLEM In order to achieve the said objective, this invention is a truss attachment deck plate which arrange | positions and fixes a truss in a longitudinal direction on a base plate, The deck plate with a truss characterized by the following structures.

(1) The base plate consists of an upper plate and a lower plate.

(2) Arrange the longitudinal connecting rod of the base plate on the upper plate, and weld and fix the connecting rod, the upper plate and the truss integrally. The connecting rods are disposed at least at both ends in the longitudinal direction of the base plate.

(3) The lower plate is superposed on the lower surface of the upper plate to form an integral base plate.

(4) Both edge portions of the connecting rods project outwardly from both edge portions of the deck plate.

In addition, in the edge portion of the upper plate of the present invention, an upper latch edge is formed on one side edge portion of the side orthogonal to the edge portion where the end of the connecting rod is disposed, and a lower latch edge is formed on the other edge portion, In the edge portion of the base plate, an upper latch edge is formed at one edge portion on the side orthogonal to the edge portion at which the end of the connecting rod is disposed, and a downward latch edge is formed at the other edge portion, and the two upper latch edges and It is a base plate with a truss which makes it possible to fit down latch edges mutually, and perforated the locking hole which communicates with each other in both base plates.

In addition, the method of manufacturing the truss deck plate of the present invention is characterized in that it is produced by the following process.

(1) A connecting rod is arranged according to the truss welding position of the upper plate, and the edge of the connecting rod is projected outward from the edge of the upper plate. Arrange the leg of the truss according to the position of the connecting rod.

(2) The lower electrode is disposed on the lower surface side of the upper plate, and the upper electrode is disposed above the leg portion of the truss to integrally weld and fix the upper plate, the connecting rod, and the leg portion of the truss.

(3) The lower surface of the plate is covered with the lower plate, and the lower surface of the upper plate is covered to form an integral base plate.

Moreover, in the manufacturing method of the truss deck plate of this invention, it is manufactured by the following processes.

(1) bend in advance according to the position of the truss welding of the upper plate to form protrusions on the upper surface side and grooves on the lower surface side;

(2) accommodate the connecting rod in the groove portion,

(3) The connecting rod, the upper plate and the leg portion of the truss are sequentially overlapped, and fixed by welding by inserting the upper and lower electrodes.

Further objects, features and advantages of the present invention will be apparent from the following detailed description and the accompanying drawings.

<Example>

One upper reinforcing bar (1) and two lower reinforcing bars (3, 3) are arranged in parallel in an isosceles triangle shape, and corrugated reinforcing bars (6, 6) in the upper reinforcing bar (1) and both lower reinforcing bars (3, 3). Are arranged in an "almost eight-shaped shape", and are welded and fixed at the point where each reinforcing bar contacts to form the truss 10 (FIGS. 1A and 3).

The connecting rod 34 is accommodated in the groove portion 18 on the lower surface 16 side of the upper base plate 12, and the leg portions 9 of the truss 10 are provided on the protrusion 17 on the upper surface 15 side. 9) is placed (Fig. 1A). Both ends of the connecting rod 34 protrude from the edges 14 and 14 of the upper base plate by a length L (about 10 mm) (Fig. 2A).

The upper electrode 42 is disposed on the upper surface side of the upper base plate 12 at the position of the connecting rod 34 (the position of the leg 9), and the lower electrode 43 corresponds to the upper electrode 42. ), The electricity is flowed to the upper and lower electrodes 42 and 43, and the connecting rod 34, the upper base plate 12, and the leg 9 of the truss 10 are integrally welded and fixed (FIG. 1b).

The lower surface 16 of the upper base plate 12 overlaps the upper surface 26 of the lower base plate 23, and the two downward latch edges 20 and 29 of the two base plates 12 and 23. ) And the upward latch edges 19 and 28 respectively. As described above, the upper and lower base plates 12 and 23 form an integral base plate 32, and constitute the truss deck plate 40 of the present invention (Figs. 1C, 2A, 2B, and 3). ).

Based on the drawings, embodiments of the present invention will be described in more detail.

(1) Configuration of the truss 10

The truss 10 used in this embodiment is demonstrated. The truss 10 is arranged in an isosceles triangle shape when one upper rebar 1 and two lower rebars 3 and 3 are viewed in parallel and viewed from the front. On the outer side 2 of the upper reinforcing bar 1 and the inner side 4 of the two lower reinforcing bars 3 and 3, corrugated reinforcing bars 6 and 6 arranged in the longitudinal direction are fixed. At this time, the upper end 7 of the upper reinforcement 1 and the corrugated reinforcement 6 is fixed, and the inner surface 4 of the lower reinforcement 3 and the lower part 8 of the corrugated reinforcement 6 are fixed. The corrugated reinforcing bars 6 and 6 bend their lower ends in the outward horizontal direction to form legs 9 and 9 (Fig. 1A).

Thus, the triangular-shaped three-dimensional truss 10 horizontally installed by the upper reinforcing bar 1, the lower reinforcing bars 3 and 3, and the corrugated reinforcing bars 6 and 6 is constituted (FIGS. 1A and 3). . In this state, the corrugated reinforcing bars 6 and 6 are arranged in parallel in an "almost eight-shaped form" when viewed from the front, and the lower reinforcing bars 3 and 3 are arranged outside the corrugated reinforcing bars 6 and 6. The upper reinforcing bar 1 is disposed inside the corrugated reinforcing bars 6 and 6, and is formed in an isosceles triangular shape when viewed from the front. Further, when the truss 10 is placed on the horizontal plane, the legs 9 and 9 of the corrugated reinforcement bars 6 and 6 are interviewed with the horizontal plane.

In addition, the corrugated reinforcement bar 6 may be disposed and fixed to the outer side 5 of the upper bar 1 and the lower bar 3 (not shown. See FIG. 1A).

(2) Configuration of the upper base plate 12

The upper base plate 12 corresponds to the position of the leg portions 9 and 9 of the trusses 10 and 10 in the longitudinal direction (the longitudinal direction of the base plate) of the truss 10 to be disposed, and has a small curved portion that is convex on the upper portion. And the small bent portion forms a protrusion 17 when viewed from the upper surface 15 side, and constitutes the groove portion 18 when viewed from the lower surface 16 side. Two grooves 18 are formed in one pair, and the interval D of the grooves 18 is formed corresponding to the position and spacing of the legs 9 of the truss 10 to be used. Two pairs of such groove portions 18 are formed.

In addition, in the edge portions 13 and 13 of the upper base plate 12, in the longitudinal direction of the groove portion 17 (the arrangement direction of the truss 10), the upper latch edge 19 on one side and the lower end on the other end. The direction latch edge 20 is formed.

The lower latch edge 20 side of the upper base plate 12 between the edge portions 14 and 14 (the edge portion orthogonal to the edge portion 13) and the pair of groove portions 17 and 17. The two fixing holes 21 and 21 are drilled into it. The fixing hole 21 is parallel to the edge 14 direction, and is also formed in the edge 14 on the opposite side similarly.

On the structure as described above, the base plate 12 is formed by pressing a copper plate.

(3) Configuration of Lower Base Plate 23

The lower base plate 23 overlaps the lower surface 16 of the upper base plate 12 to latch each other, and the grooves 18 and 18 are omitted from the upper base plate 12. That is, on the edge 24 on one side in the longitudinal direction of the truss 10, an upward latch edge 28 which can be fixed on the outside of the upward latch edge 19 is formed, and on the other edge 24 on the lower side. A lower latch edge 29 is formed on the inside of the directional latch edge 20 to enable latching.

In addition, the fixing holes 30, 30 communicating with the fixing holes 21, 21 are located near the edges 25, 25 orthogonal to the edges 24, 24 (edges perpendicular to the truss 10 direction). Perforate.

The upper base plate 12 having the above structure is formed by roll forming a copper plate.

(4) Manufacture of Truss Attachment Deck Plate 40

The trusses 10 and 10 are disposed on the upper surface 15 side of the upper base plate 12, and the leg portions 9 and 9 of the truss 10 are projected portions 17 (groove portions 18). On top (FIG. 1A). Before and after this process, the connecting rod 34 is accommodated in the groove 18. The connecting rod 34 is positioned over the entire length of the groove portion 18, and protrudes from both ends (edges 14 and 25) by a predetermined length L (about 10 mm) to form an end portion 35. In addition, the connecting rod 34 is accommodated in the upper side than the lower surface 16 of the upper base plate 12 while being inserted into the groove portion 18 (FIG. 1B).

While maintaining the above state, the lower electrode 43 is disposed at the position of the connecting rod 37 on the lower surface side of the upper base plate 12 and the upper portion of the upper leg 9 above the lower electrode 43. The upper electrode 42 is disposed on the. Electricity is supplied to the upper and lower electrodes 42 and 43 to integrally weld and fix the connecting rod 34, the upper base plate 12, and the leg 9 of the truss 10 (FIG. 1B).

At the same time or after the other truss 10, the upper base plate 12 and the connecting rod 34 are fixed by welding. At this time, a welding mark (welding trace) remains on the lower surface of the upper base plate 12.

When the welding fixing is completed, the lower base plate 23 is brought closer to the lower surface 16 side of the upper base plate 12 (FIG. 1B), and the lower surface 16 of the upper base plate 12 The upper surface 26 of the lower base plate 23 is brought into close contact with each other to engage the two downward latch edges 20 and 29 and the upward latch edges 19 and 28, respectively. As described above, the upper and lower base plates 12 and 23 are integrally overlapped to form the base plate 32, thereby forming the truss attachment deck plate 40 of the present invention (Figs. 1C, 2A, 2B, 3). In this state, the fixing holes 21 and 30 of the upper and lower base plates 12 and 23 communicate with each other.

In the above description, the thickness of the upper and lower base plates 12 and 23 is, for example, about 0.3 mm, and the diameter of the connecting rod 34 is, for example, about 2.6 to 4 mm.

The completed trussed deck plate 40 is in a state where the connecting rod 34 protrudes by the length L (about 10 mm) from the edges 14 and 25 of the upper and lower base plates (Fig. 4A).

The trussed deck plate 40 thus constructed is used similarly to the conventional deck plate. That is, when used for steel structures, the lower surface 27 of the lower base plate 23 with the connecting rods 34 and 34 intact (FIG. 4A), or with the end portions 35 and 35 inclined somewhat downward. The edge 25 side of the) is placed on the upper surface of the steel frame beams (45, 45) (Fig. 4a). At the same time, on the edge 13 and 24 side, while fixing the adjacent upper latch edges 19 and 28 and the lower latch edges 20 and 29 (FIG. 3), the required number of trussed deck plates 40 and 40 are provided. ) Is then installed.

In addition, when used for a reinforced concrete structure, the latch side 36 is formed by bending the front end side of the end part 35 of the connecting rod 34 downward (FIG. 4B). In this state, the edges 25 and 25 of the lower base plate 23 are placed on the upper surfaces of the beam formwork 47 and 47, and the latch portions 36 and 36 of the connecting rod 34 are formed into the form 47. On the outer surfaces 48 and 48 (Fig. 4B). At the same time, on the edge 13 and 24 side, while fixing the adjacent upper latch edges 19 and 28 and the lower latch edges 20 and 29 (FIG. 3), the required number of trussed deck plates 40 and 40 are provided. ) Is then installed.

In addition, the nail 47 and the trussed deck plate 40 may be fixed by nailing the fixing holes 21 and 30 to prevent the trussed deck plate 40 from being lifted or shifted.

(5) Other Examples

In the above embodiment, the truss 10 uses a triangular pillar-shaped three-dimensional truss, but other types of three-dimensional trusses or planar trusses may be used (not shown). In this case, the lower end of the truss 10 needs to be formed in a form that can be welded in contact with the protrusion 17 of the upper base plate 12.

In addition, in the said Example, although the connecting rod 34 was arrange | positioned over the full length of the groove part 18, what is necessary is just to arrange | position it at the both ends of the groove part 18 (not shown). In addition, although the connecting rod 34 is disposed on the lower surface side of the upper base plate 12, it may be disposed on the upper surface side of the upper base plate 12 (not shown), in this case, the leg 9 of the truss and the connecting rod ( 34), and the upper base plate 12 overlaps in this order.

In addition, in the above embodiment, the connecting rod 34 for the reinforced concrete structure was bent downward after the truss attachment deck plate 40 was formed to form the latch portion 36, but both ends were bent downward in advance. The connecting rod 34 having the latch portion 36 formed therein may be accommodated in the groove portion 18 and welded (not shown).

In the above embodiment, the upper and lower base plates 12 and 23 are integrally formed by inserting and fixing the upper latch edges 19 and 28 and the lower latch edges 20 and 29 to each other. It is also possible to fix by riveting in one communicating fixing hole (21, 30) (not shown).

In the above embodiment, the truss attachment deck plate 40 was formed by fixing two trusses 10 on the base plate 32, but the truss attachment deck plate was formed by one or three trusses. It may be possible (not shown).

In addition, in the above embodiment, the ceiling finishing paint, various sheets, and various boards can be fixed to the lower surface 27 of the lower base plate 23 in advance (not shown). In addition, the lower base plate 23 is formed of a copper plate, but may be made of other materials, aluminum, various resins, various woods, and the like (not shown).

In the above embodiment, although the protrusion 17 fixing the truss 10 and the groove 18 accommodating the connecting rod 34 are formed in the same bent portion, they may be formed separately (not shown).

As described above, in the present invention, the base plate is divided up and down, and the upper base plate and the truss are welded, so that the traces welded to the lower surface of the upper base plate are covered by the lower base plate and welded. There is an effect that can form a truss-attached deck plate without a trace. Therefore, the material attached to the lower surface of the truss attachment deck plate (lower surface of the lower base plate) can be used as formwork and protection plate of concrete according to various environments and final processes of various structures, thereby completing the ceiling. can do. In addition, there is an effect that the lower surface (lower surface of the lower base plate) of the truss attachment deck plate can be used as a ceiling.

In addition, since the connecting rod protruding from the base plate is welded and fixed integrally with the upper base plate and the truss, the connecting rod can be used as a tool for latching the truss attachment deck plate with the steel frame or the formwork. In addition, since the connecting rod is welded integrally with the truss deck plate, there is an effect that the truss deck plate can be reliably installed.

In addition, when the groove is formed in the upper base plate to accommodate the connecting rod, the upper base plate can be reinforced, and there is an effect that the upper base plate can be made of a thin material.

1A to 1C are partial side views illustrating a process of manufacturing the trussed deck plate of the present invention.

Figure 2a is an embodiment showing the truss deck plate of the present invention, a front view without the middle portion.

Figure 2b is a plan view of the truss attachment deck plate of the present invention omitted the middle portion.

3 is a right side view of an embodiment showing a trussed deck plate of the present invention.

Figure 4a is a partially enlarged side view illustrating the connecting rod for steel frame structure.

Figure 4b is a partially enlarged side view illustrating the connecting rod for reinforced concrete structure.

* Description of the symbols for the main parts of the drawings *

1: lower rebar 3: lower rebar

6: corrugated rebar 9: legs of corrugated rebar

10: truss 12: upper base plate

15: upper surface of the upper base plate 16: lower surface of the upper base plate

17: protrusion 18: groove

19, 28: Upward latch edge 20, 29: Downward latch edge

21, 30: fixing hole 23: lower base plate

26: upper surface of the lower base plate 27: lower surface of the lower base plate

32: base plate 34: connecting rod

35: end of connecting rod 36: latching portion of connecting rod

40: truss attachment deck plate 42: upper electrode

43: lower electrode 45: steel frame beam

47: Formwork

Claims (4)

In the truss deck plate with the truss formed by placing and fixing the truss in the longitudinal direction on the base plate, The base plate is formed of an upper plate and a lower plate, A connecting rod is disposed on the upper plate in the longitudinal direction of the base plate, and the connecting rod, the upper plate, and the truss are integrally welded and fixed, wherein the connecting rod is disposed at least at both ends in the longitudinal direction of the base plate. The lower plate is superimposed on the lower surface of the upper plate to form an integral base plate, Projecting both edge portions of the connecting rod outward from both edge portions of the deck plate. Truss deck plate. The method of claim 1, In the edge portion of the upper base plate, an upper latch edge is formed at one edge portion of the side orthogonal to the edge portion at which the end of the connecting rod is disposed, and a lower latch edge is formed at the other edge portion, In the edge portion of the lower base plate, an upper latch edge is formed at one edge portion of the side orthogonal to the edge portion at which the end of the connecting rod is disposed, and a lower latch edge is formed at the other edge portion, The two upper latch edges and the lower latch edges are fitted to each other to enable latching, Perforated fixing holes communicating with each other on the upper and lower base plates Truss base plate. According to the truss welding position of the upper plate, arranging a connecting rod, protruding an edge portion of the connecting rod outward from an edge portion of the upper plate, and arranging a leg portion of the truss according to the position of the connecting rod; The lower electrode is disposed on the lower surface side of the upper plate, and the upper electrode is disposed on the upper side of the leg of the truss to integrally weld and fix the leg of the plate, the connecting rod and the truss. Covering the lower plate on the lower surface of the upper plate to cover the lower surface of the upper plate to form an integral base plate Truss deck plate manufacturing method. The method of claim 3, According to the truss welding position of the upper plate is bent in advance to form a protrusion on the upper surface side, a groove portion on the lower surface side, Receiving a connecting rod in the groove, The connecting rod, the upper plate and the legs of the truss in order to overlap, and interposed between the upper and lower electrodes to weld fixed Truss deck plate manufacturing method.