JP3579333B2 - Floor slab structure and construction method of floor slab - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a slab structure that constitutes a slab and a method of constructing the slab.
[0002]
[Prior art]
General of the floor version, the plywood veneer and mold while supporting in temporary material that shoring, after assembly of the rebar to the inside, to be completed by dismantling the mold material after drying curing by injecting concrete construction Most methods are used , and some of them are called prefabricated floor 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 understood from FIG. 8, the floor slab is a structure composed of a reinforcing bar and concrete.
Some slabs are entirely made of steel .
[0004]
Also in fabricating the typical slab As understood from FIG. 8 injects concrete after assembling the reinforcing bar after having supported the mold by shoring.
[0005]
Formwork to make people a mold factory, for each person skilled people to assemble the rebar is referred to as a rebar Engineering is construction, shortages and soaring construction costs of skilled workers, it is often the burden of construction and installation dates at present.
[0006]
On the other hand, the prefabricated floor slab of FIG. 9 is assembled at a factory with a formwork specializing in floor slab production, a reinforcing bar is incorporated therein, concrete is poured, and after curing for 4 to 28 days, the form is removed. After that, it is completed and transported to the site, and then erected by a crane or the like.
[0007]
This construction method has a small burden on the number of days required for construction work, but the transportation work is inefficient because of the weight of the concrete that has been poured at the factory and transported to the site, which requires cost and time. Specialized large factories are required and equipment is required.
[0008]
[Problems to be solved by the invention]
Therefore, 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 production and construction costs, and to have high rigidity and seismic resistance, and to further enhance durability. An object of the present invention is to provide a provided floor slab and a method of installing the floor slab .
[0009]
[Means to Solve]
The present invention employs the following basic technical configuration to achieve the above object.
That is, a first embodiment of the floor slab structure according to the present invention is a floor slab structure including a reinforcing bar and a steel form, and the floor slab has the reinforcing bars arranged in two upper and lower stages. The upper rebar and the lower rebar are fixed to each of the edges of the X-shaped steel fitting, and one end of the X-shaped steel fitting is attached to the X-shaped center of the X-shaped steel fitting. The other end of the hanging metal fitting connected to the mold making form is connected, so that the three-dimensional structure composed of the upper reinforcing steel, the lower reinforcing steel, the X-shaped steel fitting and the steel formwork are suspended. It is a floor slab structure integrally fixed via metal fittings.
In a second aspect according to the present invention, the floor slab structure is manufactured at a place other than the bridge construction site, and the plurality of floor slab structures are mutually placed on the pier or abutment at the bridge construction site. After being erected and arranged adjacently, a space formed without the structure after inserting and binding force distribution bars intersecting at right angles to the arrangement direction of the upper reinforcing bar and the lower reinforcing bar at the site. It is a floor slab structure formed by injecting concrete into an area.
[0010]
Further, as a third aspect according to the present invention, a step of erection and mounting the floor slab structure according to any one of claims 1 to 3 on an abutment, a pier, or a beam; And a step of injecting concrete into the space area of the slab structure.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Since the floor slab structure and the floor slab construction method according to the present invention employ the above-described technical configuration, basically, the main structural body has a structure manufactured in a factory . Unlike conventional slab, becomes a possible to reduce the man-hours in the field, since the steel mold not only reduce the cost plays a degradation preventing effect of the concrete, the extension and Yunkurito fall accident life it is possible to prevent permanently.
[0012]
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 significantly reduced .
[0013]
【Example】
Hereinafter, several specific examples of a floor slab structure, a floor slab, and a method of installing a floor slab according to the present invention will be described in detail with reference to the drawings .
That is, FIG. 1 is a perspective view showing a configuration of a concrete example of the floor slab structure 1 according to the present invention. In the figure, the floor slab structure 1 is erected above the external bridge girder 4.
[0014]
The configuration 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 steel fitting 8 and the hanging fitting 7 inside the steel formwork 5 and after the erection. At the site, the force distributor 10 is shown inserted and tied.
[0015]
In the air space area 21 formed in the floor slab structure 1 according to the present invention, concrete is poured in a later step.
[0016]
In addition, the floor slab structure 1 according to the present invention, except for the distribution bars 10, is basically manufactured in a factory or outside the site.
[0017]
That Tori shown in Figure 2, deck structure 1 is factory fabrication, it is transported to more sites on the track or the like, Yuku been laid more orderly crane or the like.
[0018]
However, as a step before the slab structure 1 is erected , it is assumed that the girder 4 erected on the upper portions of the abutment 2 and the pier 3 has already been erected.
[0019]
Further, as shown in FIG. 2, after the floor deck structure 1 is laid and laid in a predetermined order , the force bars 10 shown in FIG. 1 are inserted thereinto and bound to the upper rebar 6 and the lower rebar 7 by iron wires.
Thereby, the aggregate on the compression side and the tension side, which is the main material of the reinforced concrete, is completed.
[0020]
And Tightened completes distribution force muscle 10, deck through curing period pouring concrete inside the person floor plate structure 1 is completed.
[0021]
A method for manufacturing the floor slab 1 according to the present invention will be described. 3, 4, 5, there is shown a portion of those floor plate structure 1. The upper reinforcing bar 6 and lower reinforcing bars 7 in Figure 4, the fitting member 11 made of formed steel studs or the like having for example a ring-like shape, Ru is fixed by press bonding.
[0022]
The reason for the press crimping, be provided by welding or the like for the upper reinforcing bar 6 and lower reinforcing bars 7 which is the main material of the slab to a high temperature heat than will provide a performance change to the reinforcing bar, without this It is fixed by press-compression.
[0023]
Further, Oite the present invention, the material of the steel fitting member 11 selects an cylindrical made of steel.
[0024]
Further Tori shown in Figure 3, by fixing by welding the X-type steel bracket 8 to the steel fitting member 11 fixed to the upper reinforcing bar 6 and lower reinforcing bars 7, the upper reinforcing bar 6 and lower reinforcing bars 7 and X-type The steel fitting 8 and the steel fitting member 11 form a strong integrated structure .
As shown in FIG. 5, the X-shaped steel fitting 8 used in the present invention is such that each of the four edge portions is individually welded to a predetermined portion of each reinforcing bar. It is desirable that the joining is performed by using an appropriate joining means such as a method, and more preferably, a predetermined portion of each rebar and each of the edge portions formed at four places of the X-shaped steel fitting 8. Each of them may be joined and fixed by a method such as welding via the steel fitting member 11 previously fitted and fixed to a predetermined portion of each rebar.
Further, in the present invention, the other end of the hanging metal fitting 9 whose one end is connected to the steel formwork 5 is connected to the X-shaped central part of the X-shaped steel fitting 8. Thereby, the three-dimensional structure including the upper reinforcing bar 6, the lower reinforcing bar 7, and the X-shaped steel fitting 8 and the steel formwork 5 are integrally fixed via the hanging fitting. Is desirable.
[0025]
Furthermore, X-type and a steel fitting 8 and the steel mold 5 more to welded and fixed via the Tsuzai 9, X-type steel steel fitting member 11 fixed to the upper reinforcing bar 6 and lower reinforcing bars 7 The metal fitting 8, the hanging material 9, and the steel formwork 5 are integrated , and the floor slab structure 1 is completed .
[0026]
It is desirable that each member of the floor slab structure 1 is made of steel .
[0027]
In the present invention, the most distinctive feature is the use of the X-shaped steel fitting 8 , for two reasons . The first is the flow of concrete when concrete is poured. and that sex is that produce uniform concrete is ensured, it is possible, as the second reason, the outer structure of the upper reinforcing bar 6 and lower reinforcing bars 7 and X-type steel fittings 8, most reasonable truss It has a structure that achieves rigidity higher than that of conventional reinforced concrete slabs.
[0028]
Further, in the floor slab structure 1 included in the present invention, it is also desirable to incorporate a PC steel rod in order to improve the tensile strength in the longitudinal direction of the main body of the bridge girder structure 4.
[0029]
In partially enlarged view of a specific example of the floor slab structure 1 according to the present invention is shown in FIG.
As can be understood from FIG. 6, the appropriate upper reinforcing bar 6 and lower reinforcing bar 7 are arranged on the spar 4 in a state of being temporarily fixed by appropriate means, for example, welding, welding or the like.
[0030]
Moreover, it is desirable that the concrete poured into the floor slab structure 1 according to the present invention be uniformly poured into the floor slab structure 1.
Further, it is desirable that the concrete poured into the floor slab structure 1 according to the present invention does not leak to the lower part.
[0031]
On the other hand, at least one end in the longitudinal direction of the main body of the floor slab structure 1 according to the present invention is provided with a fixing member for connecting and fixing the end of the main body of another floor slab structure 1. Is desirable.
The structure of the fixing member is not particularly limited, but a conventionally known connecting means can be used.
[0032]
Next, a method of constructing the floor slab according to the present invention will be described with reference to FIG.
First, in 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 and 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.
[0033]
At the place where several floor slabs 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.
[0034]
More to repeating the above work, laying of the floor slab is complete, be completed by Da設to the entire concrete to last.
[0035]
When the concrete is solidified, the concrete and the floor slab 1 are integrated to form a rigid structure, which has a large rigidity, and furthermore, a slab having a higher rigidity can be formed as compared with the conventional floor slab. The interval of digits 4 can be made longer, and the number of digits 4 can be reduced.
In addition, 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.
[0036]
Further, the floor slab structure 1 can be constructed without providing any temporary material.
That is, as a method of constructing a floor slab in 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 adjacent to each other in a predetermined direction, and A floor slab construction method comprising a step of connecting mutually adjacent ends of a plate structure to each other, and a step of mounting and mounting the connected floor slab structure on an abutment or a pier .
[0037]
Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and the present invention is applicable even if there is a design change without departing from the gist of the present invention. include.
[0038]
【The invention's effect】
As described above, according to the present invention, the conventional floor slab is different from the construction method in which all the processes are manufactured on-site. since only to digest the only step to unity by inserting the distribution force muscle can concrete strokes設作industry, the construction period is able to complete the exact deck and can provide a reduction of early labor.
[0039]
Further, in terms of cost, since the work of transporting the floor slab and the work of construction can be easily performed, the construction cost can be significantly reduced. In addition, by using the steel fitting member 11 and the X-shaped steel fitting 8, the work efficiency in the factory can be improved, the factory manufacturing cost can be reduced, and the rigidity of the floor slab is positively affected.
[Brief description of the drawings]
FIG. 1 is a partial perspective view showing a 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 sectional view showing a sectional structure of a concrete 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 cross-sectional view showing a cross-sectional structure in a specific example of a conventional floor slab structure.
FIG . 9 is a plan view showing a planar structure in a specific example of a conventional floor slab structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor slab structure 2 Abutment 3 Pier 4 Girder 5 Steel form 6 Upper reinforcing bar 7 Lower reinforcing bar
8 X-shaped steel bracket 9 Suspension member 10 Distributor
11 steel fitting member 21 floor slab structure space area 22 formwork veneer 23 PC floor slab

Claims (5)

A floor slab structure comprising a reinforcing bar and a steel formwork, wherein the floor slab is such that the reinforcing bar is disposed in two upper and lower stages, and the upper reinforcing bar and the lower reinforcing bar are formed of X-shaped steel fittings. The other end of the hanging fixture, which is fixed to each of the edge portions and is connected to the X-shaped center of the X-shaped steel fitting, one end of which is connected to the steel formwork. A floor slab in which the three-dimensional component comprising the upper rebar, the lower rebar, the X-shaped steel fitting and the steel formwork are integrally fixed via a suspension fitting. Structure. The floor slab structure according to claim 1, wherein concrete is poured into a space region formed in the three-dimensional structure. A steel fitting member is fixedly disposed on a part of the upper rebar or the lower rebar by a non-welding method, and each edge of the X-shaped steel fitting and the fitting member are welded and integrally formed. The floor slab structure according to claim 1, wherein the slab is bonded and fixed. The floor slab structure is manufactured at a place other than the bridge construction site, and after the plurality of floor slab structures are erected at the bridge construction site so as to be adjacent to each other on a pier or an abutment, After inserting and binding the reinforcing bars and the reinforcing bars crossing in a direction perpendicular to the direction in which the lower reinforcing bars are arranged at the site, concrete is injected into the space region formed in the three-dimensional structure and formed. The slab structure according to any one of claims 1 to 3, wherein A step of mounting and mounting the floor slab structure according to any one of claims 1 to 3 on an abutment, a pier, or a beam, and injecting concrete into the space region of the floor slab structure. And a method for constructing a floor slab structure.

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