JPH11131666A - Fixing structure of deck plate and reinforcement truss - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with a spacer having a long leg member even in the case of fixing a tall reinforcement truss to a deck plate. SOLUTION: A fixing structure of a deck plate 5 and a reinforcement truss 6 is provided for vertically fixing the reinforcement truss 6 formed by an upper bar 6A, a lower bar 6B and a lattice bar 6C to heighten the sectional rigidity of the deck plate 5 to the upper side of a lower flange 5C of the deck plate 5 along the lower flange 5c through a spacer 1. The spacer 1 includes a leg member 2 like the shape of angle in front having the tips 2A fitted in a pair of grooves 5B formed respectively parallel and horizontally in opposite webs 5A of the deck plate 5, and a rotary plate 4 fitted to the top of the leg member 2 in such a manner as to freely turn horizontally, wherein the rotary plate 4 is fixed to the lattice bar 6C of the reinforcement truss 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a structure for fixing a deck plate and a reinforcing truss, particularly when a tall reinforcing truss is fixed to a deck plate, it is necessary to use a spacer having a long leg member. This is related to a fixed structure between a deck plate and a reinforced truss.

[0002]

2. Description of the Related Art Conventionally, as a fixing structure between a deck plate and a reinforcing bar truss, there is one disclosed in Japanese Patent Laid-Open Publication No. Hei 7-139070. This conventional fixing structure will be described with reference to the drawings.

FIG. 3 is a perspective view showing a spacer used in a conventional fixing structure, FIG. 4 is a front view showing a spacer fitted on a deck plate, FIG. 5 is a side view showing the conventional fixing structure, and FIG. FIG. 7 is a plan view showing a conventional fixing structure, and FIG.
Is a plan view showing a method of fitting a spacer to a deck plate, and FIG. 8 is a front view showing a conventional fixing structure using a spacer having a long leg length.

In FIGS. 3 to 8, reference numeral 1 denotes a spacer. The spacer 1 includes a leg member 2 made of a steel bar having a C-shaped front shape in which the tip 2A is fitted into a pair of grooves 5B formed parallel and horizontally to each of the opposing webs 5A of the deck plate 5, and a leg member. 2 and a rotating plate 4 rotatably mounted on the fixing plate 3
It consists of The rotating plate 4 may be directly attached to the top of the leg member 2.

Reference numeral 6 denotes a reinforcing truss for increasing the sectional rigidity of the deck plate 5. Reinforced truss 6
A, lower muscle 6B and lattice muscle 6C. FIG.
The reinforcing bar truss 6 shown in FIG. 6 is formed by fixing a lattice bar 6C between an upper bar 6A and a lower bar 6B one by one.

In order to install and fix the reinforcing bar truss 6 on the deck plate 5 via the spacer 1, the rotating plate 4 of the spacer 1 is previously fixed to the lower portion of the upper bar 6A of the reinforcing bar truss 6 by welding or the like. In this way, when the plurality of spacers 1 are fixed to the reinforced truss 6 at a predetermined interval,
The rebar truss 6 is conveyed to the lower flange 5C of the deck plate 5, and the leg members 2 of each spacer 1 are rotated as shown in FIG.
Of the leg member 2 against the elastic force of the leg member 2. Spacer 1 fitted in groove 5B of deck plate 5
Does not come off the deck plate 5 due to the elastic force of both the spacer 1 and the deck plate 5.

After the reinforcing truss 6 is installed and fixed via the spacer 1 along the lower flange 5C of the deck plate 5, concrete is poured onto the deck plate 5. Thereby, a composite floor slab is constructed.

[0008]

However, the above-mentioned conventional fixing structure has the following problems. That is, when constructing a composite slab having high rigidity by increasing the thickness of the cast concrete, as shown in FIG.
The height (T) is high, and it is necessary to use a double structure and a strong structure. The reinforcing bar truss 6 has a pair of lattice bars 6C fixed between one upper bar 6A and two lower bars 5B.

In this case, when the rotating plate 4 of the spacer 1 is fixed to the lower part of the upper reinforcement 6A of the reinforcing truss 6 and the spacer 1 is attached to the reinforcing truss 6 as in the conventional fixing structure, the leg length of the spacer 1 is reduced. It is necessary to use long leg members 2. However, when the leg length of the leg member 2 is increased, the strength of the spacer 1 is reduced, and there is a possibility that the reinforcing truss 6 cannot be reliably fixed along the lower flange 5C of the deck plate 5.

Accordingly, an object of the present invention is to provide a fixing structure between a deck plate and a reinforcing truss, which does not require the use of a spacer having a long leg length when fixing a high reinforcing truss to a deck plate. To provide.

[0011]

According to the first aspect of the present invention,
For increasing the cross-sectional rigidity of the deck plate, a reinforcing truss comprising an upper bar, a lower bar, and a lattice bar is vertically fixed via a spacer along the lower flange above the lower flange of the deck plate. In the fixing structure between the deck plate and the reinforcing bar truss, the spacer has a front-shaped C-shape in which a front end portion is fitted into a pair of grooves formed parallel and horizontally to each of the opposing webs of the deck plate. It is characterized by comprising a leg member and a rotating plate attached to the top of the leg member so as to be freely rotatable horizontally, wherein the rotating plate is fixed to the lattice bars of the reinforcing truss.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a fixing structure of a deck plate and a reinforced truss according to the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing a fixing structure of a deck plate and a reinforcing truss of the present invention, and FIG. 2 is a side view showing a fixing structure of a deck plate and a reinforcing truss of the present invention.

The numbers in FIGS. 1 and 2 are the same as those in FIGS. 3 to 8. That is, reference numeral 1 denotes a spacer including a bar member 2 made of steel bar, a fixed plate 3 fixed to the top of the leg member 2, and a rotating plate 4 rotatably mounted on the fixed plate 3. Reference numeral 6 denotes a reinforcing truss composed of a pair of lattice bars 6C fixed between one upper reinforcement 6A and two lower reinforcements 5B, and the rotating plate 4 is provided in the middle of the lattice reinforcement 6C of the reinforcement truss 6. Are fixed by welding or the like.

By fixing the rotating plate 4 to the lattice 6C of the reinforcing bar truss 6 by welding or the like, the rotating plate 4 is connected to the upper bar 6A of the reinforcing bar truss 6 as in the conventional structure.
It is not necessary to use the leg member 2 having a long leg length as the spacer 1 as compared with the case of fixing the leg member 2. That is, when the height of the reinforced truss 6 is increased, according to the conventional fixing structure, it is necessary to use the spacer 1 having the long leg length of the leg member 2 as shown by the two-dot chain line in FIG. According to the fixing structure of the present invention, the spacer 1 in which the leg length of the leg member 2 is short.
Can be used. Therefore, there is no possibility that the proof stress of the spacer 1 is reduced, and the reinforcing truss 6 can be securely fixed along the lower flange 5C of the deck plate 5 via the spacer 1.

The method of attaching the reinforcing truss 6 to the deck plate 5 is as follows. That is, the rotating plate 4 of the spacer 1 is fixed in advance in the middle of the lattice bar 6C of the reinforcing bar truss 6 by welding or the like. When the plurality of spacers 1 are fixed to the reinforced truss 6 at predetermined intervals in this manner, the reinforced truss 6 is connected to the lower flange 5 of the deck plate 5.
C, the leg members 2 of the spacers 1 are rotated as shown in FIG. 7, and the distal end portions 2A of the leg members 2 are fitted into the grooves 5B of the deck plate 5 against the elastic force of the leg members 2. Put in.
The spacer 1 fitted into the groove 5B of the deck plate 5 does not come off the deck plate 5 due to the elastic force of both the spacer 1 and the deck plate 5.

After the reinforcing truss 6 is fixed via the spacer 1 along the lower flange 5C of the deck plate 5, concrete is poured onto the deck plate 5. Thereby, a composite floor slab is constructed.

[0018]

As described above, according to the present invention, by fixing the rotating plate of the spacer to the lattice bar of the reinforced truss, even if the reinforced truss having a high height is fixed to the deck plate, the leg can be used. The leg length of the member is short,
It is possible to use a spacer having no reduction in proof stress.
Therefore, even when the reinforced truss having a high height is fixed to the deck plate, a useful effect that the reinforced truss can be securely fixed along the lower flange of the deck plate via the spacer is provided.

[Brief description of the drawings]

FIG. 1 is a front view showing a fixing structure of a deck plate and a reinforcing truss according to the present invention.

FIG. 2 is a side view showing a fixing structure of a deck plate and a reinforcing truss according to the present invention.

FIG. 3 is a perspective view showing a spacer used in a conventional fixing structure.

FIG. 4 is a front view showing a spacer fitted into a deck plate.

FIG. 5 is a side view showing a conventional fixing structure.

FIG. 6 is a plan view showing a conventional fixing structure.

FIG. 7 is a plan view showing a method of fitting a spacer to a deck plate.

FIG. 8 is a front view showing a conventional fixing structure using a spacer having a long leg length.

[Explanation of symbols]

 1: Spacer 2: Leg member 2A: Tip 3: Fixing plate 5: Deck plate 5A: Web 5B: Groove 5C: Lower flange 6: Reinforced truss 6A: Upper bar 6B: Lower bar 6C: Lattice bar

Claims (1)

[Claims] 1. A reinforcing bar truss comprising an upper bar, a lower bar, and a lattice bar for increasing the cross-sectional rigidity of a deck plate is vertically disposed above a lower flange of the deck plate via a spacer along the lower flange. In the fixing structure of the deck plate and the reinforcing truss, the spacer has a front shape in which a tip portion is fitted in a pair of grooves formed in parallel and horizontally with each of the opposing webs of the deck plate. It comprises a U-shaped leg member and a rotary plate horizontally rotatably attached to the top of the leg member, wherein the rotary plate is fixed to the lattice bars of the reinforcing truss. , Fixed structure with deck plate and reinforced truss.