JP2002013109A - Floor slab, floor slab structural body and construction method of floor slab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor bed easy to carry and for construction work, short in a construction period, low in manufacturing and construction cost, having high rigidity and furnished with high durability, a floor slab structural body 1 constituting this floor slab and a construction method of this floor slab. SOLUTION: The floor slab structural body 1 is a structural body of an upper stage reinforcement 6, a lower stage reinforcement 7 and a steel formwork 5, the reinforcements are arranged in vertical two stages, the upper stage reinforcement and the lower stage reinforcement are fixed by an X type fitting 8 and a lifting lug 7, and this floor slab structural body 1 constitutes its characteristic feature of integrating the upper stage reinforcement 6, the lower stage reinforcement 7, the structural body of the X type fitting 8 and the steel formwork 5 by the lifting lug 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a slab, a slab structure constituting the slab, and a method of constructing the slab.

[0002]

2. Description of the Related Art A general floor slab is formed by forming a formwork while supporting a plywood veneer with a temporary material called a support, assembling a reinforcing bar inside the formwork, injecting concrete, drying and curing, and disassembling the formwork material. Most of the construction methods are completed, and some of them are called prefab slabs. FIG.
With reference to FIG. 9, an outline of a conventional floor slab construction method and configuration will be described.

[0003] That is, as can be understood from FIG.
It is composed of steel bars and concrete. Some slabs are entirely made of steel.

As shown in FIG. 8, in order to manufacture a general floor slab, concrete is poured after assembling a reinforcing bar after supporting a formwork by a supporter.

A person who forms a form is called a formwork, and a person who assembles a reinforcing bar is called a reinforcing bar.
The shortage of skilled workers, rising construction costs, and the burden of construction
There are many at present.

On the other hand, in the prefabricated floor slab of FIG. 9, a formwork specializing in floor slab production is assembled at a factory, and a reinforcing bar is incorporated therein.
Pour concrete and allow 4 ~ 2 until hardened
After curing for 8 days, remove the formwork to complete
After transporting to the site, erection is carried out using a crane.

[0007] In this construction method, the burden of construction work days,
On the other hand, the transportation work is inefficient in terms of its weight because the concrete infused at the factory is transported to the site, and costs and time are required, and the production requires a specialized large factory and equipment.

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to improve the above-mentioned deficiencies of the prior art, to facilitate transportation and construction work, to shorten the construction period, to reduce the production and construction costs,
Moreover, the present invention provides a floor slab having high rigidity and earthquake resistance, and further having high durability, a floor slab constituting the floor slab, and a method of constructing the floor slab.

[0009]

SUMMARY OF THE INVENTION The present invention employs the following basic technical structure to achieve the above object. That is, it is a structure of a reinforcing bar and a steel formwork, wherein the reinforcing bars are arranged in upper and lower two stages, and the upper reinforcing bar and the lower reinforcing bar are fixed by X-shaped steel fittings. A floor slab structure, wherein a structure of a lower reinforcing bar, an X-shaped bracket, and a steel formwork are integrated by a suspension bracket. According to a second aspect of the present invention, the structure is manufactured at a factory and erected at the site, and then the upper reinforcing bar and the lower reinforcing bar are bound at the site with force bars intersecting at right angles. The above-mentioned floor slab structure, wherein the concrete is poured after being poured.

Further, as a third aspect according to the present invention,
The above-mentioned floor slab structure is constructed and mounted on an abutment or a pier or a beam, and a step of injecting concrete into a shell space region of the floor slab structure is performed by a method of constructing a floor slab. is there.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The floor slab, the floor slab, and the method of constructing the floor slab according to the present invention employ the above-described technical configuration. Unlike conventional floor slabs, it is possible to reduce the number of man-hours required on site, which not only reduces costs, but also prevents steel molds from deteriorating concrete. Since the effect is achieved, it is possible to prolong the service life and permanently prevent the concrete from falling.

Further, since the work of transporting the floor slab and the work of construction can be easily performed, the construction period and construction cost can be greatly reduced.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a slab structure and a slab according to the present invention. It is a perspective view which shows the structure of the specific example of the structure 1, In the figure, the said floor slab structure 1 is installed in the upper part of the said external bridge girder 4. FIG.

The structure of the floor slab structure 1 shows that the upper reinforcing bar 6 and the lower reinforcing bar 7 are fixed by the X-shaped bracket 8 and the hanging bracket 7 inside the structural formwork 5 and after the erection. The field muscle 10 to be inserted and tied on site is shown.

In the present invention, concrete is poured into the air space area 21 formed in the floor slab structure 1 in a later step.

The floor slab structure 1 of the present invention comprises:
Except for the distribution bars 10, all in the factory or outside the site,
In principle, it is manufactured.

That is, as shown in FIG. 2, the floor slab structure 1 manufactured at the factory is transported to the site by a truck or the like, and is erected in order by a crane or the like.

However, as a process before the floor slab structure 1 is erected, the girder 4 erected above the abutment 2 and the pier 3 is required.
However, it is assumed that it has already been installed.

Further, as shown in FIG.
After being erected and laid in a predetermined order, the power distribution bars 10 shown in FIG. 1 are inserted and bound to the upper rebar 6 and the lower rebar 7 by iron wires. This completes the compression-side and tension-side aggregates, which are the main components of reinforced concrete.

When the connection of the distribution bars 10 is completed, concrete is poured into the interior of the floor slab structure 1 and the slab is completed after a curing period.

A method for manufacturing the floor slab 1 according to the present invention will be described. FIGS. 3, 4 and 5 show a part of the floor slab structure 1. FIG. A ring-shaped stopper 11 is attached to the upper reinforcing bar 6 and the lower reinforcing bar 7 in FIG.
It is fixed by press bonding.

The reason for press-pressing is that applying high-temperature heat by welding or the like to the upper rebar 6 and the lower rebar 7, which are the main members of the floor slab, causes a change in performance. Instead, they are fixed by press bonding.

Further, in the present invention. As the material of the ring-shaped stopper 11, a cylindrical member made of steel is selected, but other materials such as plastic, ceramics, aluminum, stainless steel, and carbon fiber are also selected depending on the situation.

Further, as shown in FIG. 3, the X-shaped bracket 8 is fixed to the ring-shaped stopper 11 fixed to the upper reinforcing bar 6 and the lower reinforcing bar 7 by welding, so that the upper reinforcing bar 6 and the lower reinforcing bars 7 and X The mold fitting 8 and the ring-shaped stopper 11 are
Make one.

Further, the X-shaped bracket 8 and the steel formwork 5 are connected to the hanging members 7.
The X-shaped fitting 8 is attached to the ring-shaped stopper 11 fixed to the upper reinforcing bar 6 and the lower reinforcing bar 7 by welding.
In addition, the hanging member 7 and the steel formwork 5 are integrated, and the floor slab structure 1 is completed.

It is desirable that each member of the floor slab 1 be made of steel, but materials such as plastic, ceramics, aluminum, stainless steel and carbon fiber are also selected depending on the situation.

In the present invention, the most distinctive feature is that the X-shaped bracket 8 is employed. There are two reasons for this. The second reason is that the external structure of the upper reinforcing bar 6, the lower reinforcing bar 7, and the X-shaped bracket 8 is most rational because the fluidity of the concrete is ensured and uniform concrete can be produced. Truss structure, which achieves rigidity higher than that of conventional reinforced concrete slabs.

Further, the floor slab structure 1 included in the present invention
In order to improve the tensile strength of the bridge girder structure 4 in the longitudinal direction of the main body, it is also desirable to incorporate a PC steel rod.

FIG. 6 is a partially enlarged view of a specific example of the floor slab structure 1 according to the present invention. As can be understood from FIG. 6, the upper reinforcing bar 6 and the lower reinforcing bar 7 are appropriately connected to the spar 4
It is arranged in a state temporarily fixed thereon by appropriate means, for example, means such as welding or welding.

It is desirable that the concrete to be cast into the floor slab structure 1 according to the present invention be uniformly laid into the floor slab structure 1. It is also desirable that the concrete poured into the floor slab structure 1 according to the present invention does not leak to the lower part.

On the other hand, a fixing member for connecting and fixing an end of the main body of another floor slab structure 1 to at least one end in the longitudinal direction of the main body of the floor slab structure 1 according to the present invention. Is desirably provided. The structure of the fixing member is not particularly limited, but a conventionally known connecting means can be used.

Next, a method for constructing the floor slab according to the present invention will be described with reference to FIG. First, at a factory or a construction site where the floor slab structure 1 is manufactured, a plurality of floor slab structures 1 are loaded on a truck or the like, carried into the site, and the floor slab structures 1 are sequentially ordered one by one by a crane or the like. Install it correctly.

At the place where several floor slab structures 1 are laid, force bars 10 are inserted, and the intersections of the upper reinforcing bar 6 and the lower reinforcing bar 7 are tied by a thin iron wire or the like.

By repeating the above operation, the laying of the floor slab is completed, and the concrete is finally completed by laying the entire slab.

When the concrete is solidified, the concrete and the floor slab 1 are united to form a rigid structure, which has a large rigidity, and a slab having a higher rigidity than conventional slabs can be formed. The spacing of the digits 4 can be made longer than when used, and the number of digits 4 can be reduced. Further, since the main body of the floor slab 1 constitutes the outer wall of the floor slab, there is no need to build or remove the concrete formwork.

Further, the floor slab structure 1 can be constructed without providing any temporary material. That is, as a method of constructing a floor slab according to the present invention, basically, a step of laying the floor slab structure 1 having the above-described configuration on an abutment or a pier, and And a step of injecting concrete into the space region. In another embodiment, a plurality of the floor slab structures 1 are linearly arranged in a predetermined direction and are adjacent to each other. A floor slab construction method comprising: a step of connecting mutually adjacent ends of a floor slab structure to each other; and a step of erection and mounting the connected floor slab structure on an abutment or a pier.

Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and the design may be changed without departing from the scope of the present invention. Are also included in the present invention.

[0038]

As described above, according to the present invention, the conventional floor slab is different from the construction method in which all the processes are performed on site, and all the main structures are performed at the factory to produce an accurate product. It is possible to carry out concrete casting work by simply carrying it into the site and only slightly digesting the process of inserting force bars and binding.
The construction period can provide labor savings early and complete the accurate floor slab.

Further, in terms of cost, the work of transporting the floor slab and the work of construction can be easily performed, so that the construction cost can be greatly reduced. Further, by using the ring-shaped stopper 11 and the X-shaped bracket 8, the working efficiency in the factory can be improved, the factory manufacturing cost can be reduced, and the rigidity of the floor slab is also positively affected.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing the configuration of a specific example of a floor slab structure of the present invention.

FIG. 2 is a sectional view showing the configuration of another specific example of the floor slab structure of the present invention.

FIG. 3 is a partial cross-sectional view showing a cross-sectional structure in a specific example of the floor slab structure of the present invention.

FIG. 4 is a partial cross-sectional view showing a cross-sectional structure in a specific example of the floor slab structure of the present invention.

FIG. 5 is a partial cross-sectional view showing a cross-sectional structure in a specific example of the floor slab structure of the present invention.

FIG. 6 is a cross-sectional view showing a cross-sectional structure in a specific example of the floor slab structure of the present invention.

FIG. 7 is a plan view showing a planar structure in a specific example of the floor slab structure of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Floor slab structure 2 ... Abutment 3 ... Pier 4 ... Girder 5 ... Steel formwork 6 ... Upper rebar 7 ... Lower rebar 8 ... X-shaped metal fitting 9 ... Suspension member 10 ... Distributing steel 11 ... Ring-shaped stopper metal fitting 21 … Floor space inside the floor slab structure

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[Procedure amendment]

[Submission date] December 22, 2000 (200.12.
22)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 shows the configuration of a specific example of a floor slab structure of the present invention.
It is a partial perspective view shown .

FIG. 2 is a sectional view showing the configuration of another specific example of the floor slab structure of the present invention.

FIG. 3 is a partial cross-sectional view showing a cross-sectional structure in a specific example of the floor slab structure of the present invention.

FIG. 4 is a partial cross-sectional view showing a cross-sectional structure in a specific example of the floor slab structure of the present invention.

FIG. 5 is a partial cross-sectional view showing a cross-sectional structure in a specific example of the floor slab structure of the present invention.

FIG. 6 is a cross-sectional view showing a cross-sectional structure in a specific example of the floor slab structure of the present invention.

FIG. 7 is a plan view showing a planar structure in a specific example of the floor slab structure of the present invention.

FIG. 8 is a sectional view of a concrete example of a conventional floor slab structure.
It is sectional drawing which shows a surface structure.

FIG. 9 is a plan view of a concrete example of a conventional floor slab structure.
It is a top view which shows a surface structure.

Claims (7)

[Claims] 1. A structure comprising a reinforcing bar and a steel formwork, wherein the reinforcing bars are arranged in two upper and lower stages, and the upper reinforcing bar and the lower reinforcing bar are fixed by X-shaped steel fittings. A floor slab structure, wherein the structure of the upper rebar, the lower rebar, the X-shaped bracket, and the steel formwork are integrated by a suspension bracket. 2. The structure according to claim 1, wherein concrete is poured into the structural space.
The slab structure as described. 3. A steel ring-shaped metal fitting is joined to the joint of the X-type metal fitting of each of the upper and lower reinforcing steels when welding and integrating the components of the upper and lower reinforcing steels and the X-type metal fitting. A floor slab structure, characterized in that the floor slab structure is fastened with a 4. When the structural member of the upper rebar, the lower rebar, and the X-shaped bracket and the steel formwork are integrated, the X-shaped bracket and the steel formwork are welded through a steel suspension fitting. A floor slab structure, characterized in that the slab is joined. 5. The structure is manufactured in a factory, erected at the site, and then connected to the upper and lower reinforcing bars at right angles to the distribution bars intersecting at right angles to the upper reinforcing bar and the lower reinforcing bar. The floor slab structure according to claim 1, wherein the floor slab structure is configured to be formed. 6. The structure is made of one material selected from steel or metal material, plastic material, plastic composite (FRP) containing fiber material such as carbon fiber, wood or the like. The floor slab structure according to any one of claims 1 to 5, wherein 7. A step of erection and mounting the floor slab structure according to any one of claims 1 to 6 on an abutment, a pier, or a beam, and in the space area of the floor slab structure. And a step of injecting concrete into the slab.