JPH08151718A - Deck plate with truss and production method thereof - Google Patents

Abstract

PURPOSE: To prevent the influence of welding like a striped pattern due to the welding at the lower face of a base plate and make it possible to use a colored steel plate or a base plate provided with a finish material in advance under the face, by welding the protruded parts on the upper face of the base plate with a truss and fix them together. CONSTITUTION: One upper steel rod 9 and two lower steel rods 10 are parallelly arranged to form a right triangle in the front view and corrugated reinforcing rods 11 are welded to the upper steel rod 9 and the respective lower steel rods 10 to form a triangular truss 15. The steel base plate 7 is positioned at the lower ends 13 of the corrugated reinforcing steel rod 11, on the upper face thereof to parallelly form two protruded parts 2 at a specified distance. The end 14a of fixing part of the lower end 13 of the triangular truss 15 is arranged to contact toe support line 5 or the protruded part 2 and welded and fixed thereto. In this time, the lower end of triangular truss 15 is separated from the upper face 7b of base plate 7 by a specified distance H. In this way, a deck plate 17 with a truss is constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deck plate used when constructing a floor of a steel frame structure, a concrete structure or the like, in which the lower end of the truss is fixed with a slight gap from the upper surface of the base plate. The present invention relates to a deck plate with a truss and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, in order to reinforce a steel plate base plate,
Various trusses were welded together to form an integrated truss deck plate. At this time, a truss was placed on the upper surface of the base plate, and spot welding terminals were arranged above and below the base plate to weld the abutting portions of the base plate and the truss.

[0003]

In the welding of the truss and the base plate in the above-mentioned prior art, welding stripes were formed on the base plate, and the appearance of the lower surface of the base plate was unsightly. Therefore, in order to treat the welding stripes, various finishing materials such as painting the bottom surface of the base plate or pasting sheets or boards, or attaching ceiling materials to cover the bottom surface of the base plate must be covered. did not become. Therefore, there is a problem that it takes a lot of time to finish the deck plate after the concrete is placed at the construction site and the temporary work cost for the ceiling work is increased.

It is also conceivable to prepaint the base plate of the deck plate at the factory, but it is easier to paint the lower surface of the base plate after welding the truss to the base plate than at the construction site. However, it was also the same that it took time and effort. It is also conceivable to paint the base plate before welding the truss to the base plate, but this could not be carried out because the paint of the portion was stained or peeled off in the subsequent spot welding.

[0005]

According to the present invention, however, the above-mentioned problems are solved because the lower end of the truss is fixed to the protrusion formed on the upper surface of the base plate to form the deck plate with the truss.

That is, the present invention is a deck plate with a truss characterized in that the lower end of the truss is fixed to a protrusion for supporting the truss formed on the upper surface of a base plate made of a steel plate. In addition, the truss is formed by arranging one upper rebar and two lower rebars in parallel in a front triangular shape, and welding corrugated reinforcing rebars to the upper rebar and each lower rebar to form a front triangular shape. The protrusions on the upper surface of the base plate are arranged in parallel at a predetermined interval according to the positions of the lower end portions of the wavy reinforcing bars.
It is a deck plate with a truss having two ridges and a truss support portion provided on the ridge. Further, the deck plate with truss is provided with a predetermined distance from the upper surface of the base plate, and the lower end of the corrugated reinforcing bar is fixed to the protrusion of the base plate.

In addition, the lower end of the truss is disposed so as to face the upper surface of the base plate made of a steel plate in which protrusions are formed in parallel on the upper surface at predetermined intervals, and the lower end of the truss is opposed to the lower end of the truss. Is a method for manufacturing a deck plate with a truss, which is characterized in that the portion and the ridge are welded. Further, the ridge of the base plate is a method for manufacturing a deck plate with a truss, which is characterized in that the base plate is bent upward to hold a predetermined angle. Furthermore, it is a method of manufacturing a deck plate with a truss in which a finishing material is previously attached to the lower surface of the base plate before welding the base plate and the truss.

The above-mentioned protrusions preferably serve as reinforcements for reinforcing the base plate. Also,
The projecting portion may be formed not as a projecting strip but projecting on the upper surface of the base plate, contacting at least the truss, and providing a predetermined interval at each position where the truss can be fixed. Also, if the protrusion is a structure that can support the truss and fix the end of the truss,
It is also possible to use protrusions or hooks.

Further, in the above, attaching the finishing material to the lower surface of the base plate means forming a ridge on the base plate and then coating the lower surface of the base plate with various paints, spraying various materials, or various sheets. Or sticking boards. Further, it also means that a base steel plate is formed by bending a colored steel plate that has been painted in advance to form a ridge.

[0010]

Since the protrusion formed on the upper surface of the base plate and the lower end of the truss are fixed to each other, there is no risk of welding stripes or the like on the lower surface of the base plate when fixing. If a predetermined distance is provided between the upper surface of the base plate and the lower end of the truss, the cover thickness of concrete can be secured. Further, it is possible to perform spot welding from the lateral direction with the ridge and the lower end of the truss sandwiched.

[0011]

Embodiment 1 An embodiment of the present invention will be described with reference to the drawings.

The truss used in this embodiment will be described. The truss has one upper rebar 9 and two lower rebars 1
0 and 10 are arranged side by side in a triangular shape on the front side. The corrugated reinforcing bars 11 arranged in the same direction are fixed to the upper reinforcing bar 9 and the inner side surface 10a of one lower reinforcing bar 10. The upper reinforcing bar 9 is fixed to the upper end 12 of the wavy reinforcing bar 11, and the lower reinforcing bar 10 is fixed to the lower part 13 of the wavy reinforcing bar 11. The lower end of the corrugated reinforcing bar 11 is bent outward in the horizontal direction to form the fixing portion 14.

Similarly, a corrugated reinforcing bar 11 is fixed to the upper reinforcing bar 9 and the inner surface 10a of the other lower reinforcing bar 10 to form a triangular truss 15. In this state, the corrugated reinforcing bars 11 and 11 are arranged in parallel in a frontal "substantially C-shape", the lower reinforcing bar 10 is arranged outside the corrugated reinforcing bars 11 and 11, and the upper reinforcing bar 9 is arranged inside the corrugated reinforcing bar 11. They are arranged and formed in a triangular shape as a whole. Further, when the triangular truss 15 is placed on the horizontal plane, the fixing portions 14, 14 of the wavy reinforcing bars 11, 11 come into contact with the horizontal plane. The distance between the edges 14a and 14a of the fixing portion 14 is D ₁ (shown by a chain line 15 in FIG. 4A).

Next, the base plate used in this embodiment will be described. At least two predetermined positions of the intermediate portion of the substrate 1 made of a steel plate on which at least the lower surface 1a is pre-baked with a predetermined color are bent and folded back so as to project upward from the upper surface 1b, and two ridges are formed. 2 and 2 are formed. The ridges 2 are provided along the length direction of the substrate 1 over the entire length at predetermined intervals (according to the width of the truss). The ridge 2 is formed so as to be inclined so that the base end portion 3 is opened outward and opened, and the tip end portion 4 is bent upward. The bending position between the tip end portion 3 and the base end portion 4 is defined as a supporting strip (supporting portion) 5 (FIG. 4B).

Here, the distance D ₂ between the support strips 5 is the width (width of the truss) D of the fixed portions 14, 14 on both sides of the triangular truss 15.
It is formed the same as ₁ . Further, the width D ₃ between the base ends (contact positions with the upper surface of the substrate 1) 3a, 3a of the base end portion 3 of the ridge 2 is the width D ₁ of the fixing portions 14, 14 of the triangular truss 15.
It is formed to be narrower (FIGS. 4A and 4B).

Further, the base plate 7 is constructed by raising both ends of the substrate 1 and bending the tip ends inward or outward to form connecting portions 6 and 6a which can be connected to each other. (FIGS. 4A and 4C).

Next, the assembly of the base plate 7 and the triangular truss 15 will be described.

The base plate 7 is placed on a predetermined horizontal base (not shown), and the triangular truss 15 is placed from above the base plate 7.
To lower the edge 14a of the fixed portion 14 of the triangular truss 15
Is brought into contact with the support strip 5 of the base plate 7.

At this time, since the distance D ₂ between the support strips 5 and 5 of the ridges 2 and ₂ is formed to be the same as the width D ₁ of the fixing portions 14 and 14 of the triangular truss 15, the triangular truss 15 is mounted. Positioning becomes easy when placing.

At this time, the base end 3 of the base end 3 of the ridge 2
Since the width D ₃ between a and 3a is formed narrower than the width D _{1 of} the triangular truss, the edge 14a of the fixing portion 14 of the triangular truss 15 is hooked on the support strip 5. Therefore, the triangular truss 15
Does not fall onto the base plate 7 without temporary fixing, and the triangular truss 15 is supported at a predetermined distance H from the upper surface of the base plate 7 (FIG. 3 (b)).

Next, the ridge 2 of the base plate and the triangular truss 1
5, the spot welding terminals 16 and 16 are arranged laterally across the ridge 2 and the fixed portion 14 at each contact point with the fixed portion 14 to spot weld the ridge 2 and the fixed portion 14. And sticks (Fig. 3 (b)). At this time, since the base plate 15 is energized only by the ridges 2, there is no influence on the lower surface, welding stripes do not occur on this portion, and the baking coating on this portion does not peel off.

The deck plate 17 with the truss is constructed as described above (FIGS. 1, 2 and 3 (a)). Reference numeral 23 in the figure is a fixing rod for fixing the deck plate to the steel beam. When the fixing rod 23 is hooked on the upper edge of the post beam form, it has a bent lower end (not shown).

Next, the deck plate 17 with the truss in the above-described embodiment is erected on a predetermined steel frame beam and is used by fixing the steel frame beam and the fixing rod 23, similarly to the conventional deck plate. At this time, the adjacent deck plates 17, 17
The adjacent connecting portions 6 and 6a are hooked to each other to connect and fix the deck plate 17. Subsequently, if necessary, a predetermined floor reinforcing bar or the like is laid out and concrete 18 is placed on the deck plate 17 to construct a floor skeleton.

At this time, since the distance H is maintained between the upper surface 7b of the base plate 7 and the supporting portion of the triangular truss 15 (lower edge of the triangular truss), the triangular truss 15 secures the concrete covering distance of the distance H. it can.

In the above-mentioned embodiment, the substrate 1 is pre-baked and painted, but various coatings may be applied to the lower surface 7a of the base plate 7 after the base plate 7 is formed and before the triangular truss 15 is fixed. . In addition, before fixing the truss to the base plate 7, another finishing plate such as a wooden plate, a resin plate, tiles or other materials can be attached to the lower surface 7a of the base plate 7 (not shown). . In addition, styrene foam or the like may be attached to the lower surface 7a of the base plate 7 in advance in order to enhance the heat insulating performance (not shown).

Further, in the above-mentioned embodiment, the base plate 7 is formed with the connecting portions 6 and 6a which are fitted with each other.
It is also possible to connect the deck play and 17 by fitting a cap capable of sandwiching and fitting the connecting portions 6 and 6 to the connecting portions 6 and 6 (not shown).

Further, in the above-mentioned embodiment, the ridge 2 is formed to be inclined and bent further upward, but it is also possible to incline it outward (FIG. 8 (a)).

The ridge 2 is preferably provided so as to be inclined with respect to the base plate 1, but it may be formed perpendicularly to the base plate 7 (FIG. 8B). In this case, in order to keep the distance H between the triangular truss 15 and the base plate 7, the upper surface 7b of the base plate 7 and the fixing portion 1 of the triangular truss 15 are fixed so that the position of the triangular truss 15 does not shift until welding.
A pedestal 19 is interposed between the four. The ridge 2 can also be formed in an inverted L shape by vertically rising the base plate 7 and then bending the tip portion (support portion) 4 outward (FIG. 8).
(C)).

The ridge 2 is preferably formed by bending the substrate 1 and folding it back. However, another steel material having an L-shaped cross section (almost the entire length in the length direction) is welded to the upper surface 1a of the substrate 1. Can also be formed (not shown). In this case, it is also possible to fix steel members having an L-shaped cross section or other shapes at a predetermined interval on the upper surface of the substrate in accordance with the position of the fixing portion 14 of the triangular truss 15 instead of forming the protrusions (Fig. Not shown).

Further, in the above embodiment, one triangular truss 15 is fixed to one base plate, but it is also possible to fix two or more triangular trusses 15 in parallel (not shown). Further, in the above embodiment, when the slab thickness is thick, the position of the upper reinforcing bar 9 is raised by the triangular truss 15 and the wavy reinforcing reinforcing bar 11 is formed in a large size to configure the deck plate with truss 17 (FIG. 6). ).

Further, in the above embodiment, the triangular truss 15 is used.
The shape of can also have other configurations. For example, after the fixing portion 14 is horizontally bent, the tip portion 14b thereof is further bent obliquely upward to form the triangular truss 15, which is similarly fixed to the base plate 2 to form the deck plate with the truss. (FIG. 9A). In this case, ridge 2
Is formed perpendicular to the base plate 7, and the fixing portion 14 of the triangular truss 15 contacts the upper surface 7b of the base plate 7,
The edge 14a of the abuts the ridge 2 (FIG. 9 (b)). Also in this case, since the edge 14a of the fixed portion 14 and the ridge 2 are welded, the lower surface 7a of the base plate 7 is not affected by the welding.

Further, in the above embodiment, the triangular truss 1
5 is a fixing portion 14 formed by bending the lower end of the corrugated reinforcing bar 11.
Although the truss 15 is formed, the truss 15 may be formed without bending (FIGS. 7A and 7B). In this case as well, the deck plate with truss is similarly constructed by welding and fixing to the ridge 2 of the base plate 7. Further, in this case, the lower edge 11a of the corrugated reinforcing bar 11 abuts against the supporting strip 5 of the projecting strip 2 of the base plate 7 to spot weld the lower edge 11a of the corrugated reinforcing bar 11 and the strip 2. (FIG.7 (b)).

Further, although the truss has a triangular shape on the front surface, it may have other shapes such as a square shape on the front surface, a circular shape on the front surface, and a flat shape. For example, one upper rebar 9 and one lower rebar 1
The planar truss 21 can be formed by sandwiching the corrugated auxiliary reinforcing bar 11 between the upper and lower sides of the plate 0 and welding them together.
Also in this case, the lower reinforcing bar 10 of the truss is attached to the protrusion 2 of the base plate 7.
And the truss 21 is supported so that the predetermined distance H is maintained, and the contact portion is spot-welded and fixed (see FIG. 7).
(B)), The deck plate 22 with a truss is comprised (FIG.7 (a)).

[0034]

Since the lower end of the truss is fixed to the protrusion on the upper surface of the base plate to form the deck plate with the truss,
Even if adhered by welding, there is no risk of welding stripes on the bottom surface of the base plate, and there is an effect that the work of repairing or painting the bottom surface of the base plate after manufacturing the deck plate with the truss can be omitted. Also, since the lower surface of the base plate is not affected by welding, the lower surface of the base plate must be painted beforehand before the truss is fixed.
Since finishing such as pasting of finishing material can be applied, it is possible to manufacture the deck plate with high efficiency and to improve the quality as compared with the processing after completion of the deck plate.

Further, since the spot welding can be performed from the lateral direction by sandwiching the ridge and the lower end of the truss, the welding work can be simplified and the deck plate with the truss can be efficiently performed as compared with the welding work with the base plate sandwiched. Can be manufactured.

[Brief description of drawings]

FIG. 1 is a front view of a deck plate with a truss according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

3A is a cross-sectional view taken along the line AA of FIG.
(B) is an enlarged view of part B of (a).

FIG. 4 is a base material used in this example, (a) is a vertical sectional view, (b) is a partially enlarged vertical sectional view showing a ridge,
(C) is a plan view.

FIG. 5 is a vertical sectional view of the deck plate with the truss in use.

FIG. 6 is a vertical cross-sectional view of an embodiment in which the truss is tall.

FIG. 7A is a vertical cross-sectional view of a truss in which the lower end portion of the wavy reinforcing bar is another shape, and FIG. 7B is a partially enlarged vertical cross-sectional view of FIG.

8 (a) and 8 (b) are partially enlarged vertical sectional views showing the shapes of the protrusions of another base plate of the present invention.

FIG. 9A is a longitudinal sectional view showing the shape of another truss of the present invention, and FIG. 9B is a partially enlarged sectional view.

FIG. 10 is another embodiment of the truss of the present invention, (a) is a longitudinal sectional view, (b) is a partially enlarged vertical sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 board 3 ridge 5 support ridge (truss support part) 7 base plate 7a lower surface of base plate 7b upper surface of base plate 9 upper reinforcing bar 10 lower reinforcing bar 11 corrugated reinforcing bar 15 triangular truss 17 deck plate with truss 21 truss 22 Deck plate with truss

Claims (6)

[Claims] 1. A deck plate with a truss, wherein a lower end of the truss is fixed to a projection for supporting the truss formed on the upper surface of a steel plate base plate. 2. A truss has a front triangular shape in which one upper reinforcing bar and two lower reinforcing bars are arranged in parallel in a front triangular shape, and corrugated reinforcing bars are welded to the upper reinforcing bar and each lower reinforcing bar. The protrusions on the upper surface of the base plate are two protrusions arranged in parallel at a predetermined interval according to the positions of the lower end portions of the wavy reinforcing bars, and the truss support portions are provided on the protrusions. The deck plate with the truss according to claim 1. 3. A deck plate with a truss according to claim 1, wherein a predetermined distance is provided between the upper surface of the base plate and the lower end of the corrugated reinforcing bar is fixed to the protrusion of the base plate. 4. A lower end portion of a truss is disposed so as to face a base plate made of a steel plate, in which protrusions are formed in parallel on an upper surface at predetermined intervals, at a predetermined distance from the upper surface of the base plate, and the lower end of the truss is opposed. A method for manufacturing a deck plate with a truss, which comprises welding the rib and the ridge. 5. The method of manufacturing a deck plate with a truss according to claim 4, wherein the projection of the base plate is bent upward to hold a predetermined angle. 6. The method of manufacturing a deck plate with a truss according to claim 4, wherein a finishing material is previously attached to the lower surface of the base plate before welding the base plate and the truss.