JP3000090B2 - Assembling method of preassembled steel rebar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is used for a composite processing method of a reinforcing bar and a steel frame having a reinforced concrete column and a steel frame as a beam, and is used when the column is manufactured in a factory in advance. The present invention relates to a method for assembling a pre-assembled steel rebar.

[Prior art] In recent years, in the construction method of buildings, due to the short construction period of steel structure and low cost of reinforced concrete construction, the combined construction method of steel frame and steel bars (RCSS construction method), where the columns are made of reinforced concrete and the beams are made of steel. Usage is increasing. In this combined construction method, the pillars are pre-fabricated integrally with the beam connections at the factory,
It is built on site, and is a construction method particularly suitable for large-scale stores, offices, and factories.

Therefore, in order to implement the RCSS construction method, it is necessary to pre-assemble columns consisting of steel frames, reinforcing bars and other pre-assembled members at the factory.

Conventionally, such pre-assembly is often performed in a factory, but since there is no such factory near the construction site (especially, there is often no such factory in a local area), a stockyard of an ironworks is rented. I have to make it.

[Problem to be Solved by the Invention] However, since the above-mentioned pre-assembly is performed by welding,
At the time of rainfall or snowfall, welding cannot be performed at a stockyard without a roof, so that there is a problem that pre-assembly cannot be performed at the stockyard. The above problem can be solved by performing pre-assembly work indoors.However, in order to load and carry out or temporarily relocate the completed pre-assembled steel rebar, a considerable height and space are required in the room. .

The present invention has been made in view of such circumstances,
The problem is that even when it rains or snow falls, it can be pre-assembled in a room with no height and size, and the finished pre-assembled steel rebar can be loaded, carried out, or temporarily relocated. An object of the present invention is to provide a method of assembling a steel reinforcing bar.

Means for Solving the Problems The gist of the invention according to claim 1 is a method for assembling a pre-assembled steel rebar comprising a connection member, a reinforcing bar, and other pre-assembled members, on a gantry provided with moving means. The connection member is placed at a predetermined position, and then the gantry is moved into the wet-proof body,
A pre-assembled member is mounted on the gantry and pre-assembled, and then the gantry is moved out of the wetproof body, and the pre-assembled steel rebar is carried out, loaded or temporarily transferred to manufacture the pre-assembled steel rebar. A method for assembling a pre-assembled steel frame rebar.

The gist of the invention according to claim 2 is a method of assembling a pre-assembled steel rebar comprising a connection member, a reinforcing bar and other pre-assembled members, wherein the connection member is placed at a predetermined position on a gantry. Moving the wet-proof body provided with the moving means so as to cover the gantry, and pre-assembling the rebar and other pre-assembled members on the gantry by attaching the connection member, and then the upper part of the gantry The pre-assembled steel rebar is characterized in that the pre-assembled steel rebar is manufactured by moving the wetting-proof body so as to open, and carrying out or loading or temporarily moving the pre-assembled steel rebar. .

[Operation] The wet-proof body enables welding work in a stockyard without a roof.

The moving means makes it possible to perform a lifting operation or the like outside the wetproof body.

Therefore, the invention according to claims 1 and 2 makes it possible to perform pre-assembly work in a room having no height and size during rainfall or snowfall, and to load and carry out or temporarily load the completed pre-assembled steel rebar. Relocation is possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in the present embodiment are not intended to limit the scope of the present invention only to them unless otherwise specified. , Are merely illustrative examples.

First, a configuration of an apparatus (hereinafter, simply referred to as a "pre-assembly apparatus") used in a method of assembling a pre-assembled steel rebar according to the present embodiment will be described with reference to FIGS.

As shown in FIG. 1, the pre-assembly device A includes a prefab 10 (wetproof body) for pre-assembly of the column C used in the composite machining method, a track 20 extending from the inside of the prefab 10, and a It is roughly constituted by a pre-assembled reinforcing bar base 40 provided with rolling wheels 30.

As shown in FIG. 1, the prefab 10 is a pentagonal shape having an outer contour of a pentagonal shape in combination with the ground surface, with two sides perpendicular to the ground and having a vertex at one corner in a vertical sectional view. The vertex is located vertically outside the two tracks 20. The wife has one side closed and the other open, and the open side is the entrance 11.

The track 20 is formed of two steel rails, and extends from the closed wife side through the entrance 11 to the outside.

The wheels 30 are made of steel, and four wheels 30 are provided at equal intervals on the lower surface of the lower flange of each floor beam 41, that is, a total of eight wheels 30 are provided.

As shown in FIGS. 2 (a) to 2 (b), the pre-assembled steel frame gantry 40 includes two floor beams 41 and the two floor beams.
It consists of eight horizontal members 42 erected on 41 and a floor member 43 laid between the two floor beams 41, and a front support base 50, a central support base 60, A rear support base 70 and a main reinforcing bar fixing base 80 are provided. The two floor beams 41 are made of H steel with one surface of the flange facing upward and the axial directions being parallel to each other. The horizontal member 42 is made of H steel that penetrates the upper part of the web of each floor beam 41 and protrudes both ends so that the upper flange upper surface contacts the upper flange lower surface of each floor beam 41. For the floor material 43, a striped steel material is used.

As shown in FIGS. 2 (a) to 2 (c), the front support base 50 includes a front support girder 51 located at the front edge of the pre-assembled steel frame base 40, Four legs 53 and two stays 54 for supporting the support girder 51, two front receiving members 52 erected on the front support girder 51, and fixed to the front receiving members 52. The jig 55 is provided to support one end of the column C. The front support beam 51 has its axial direction oriented in the longitudinal direction of the pre-assembled steel frame gantry 40,
H steel with one flange facing the top. Each leg 53
Is H steel with two flanges, each of which is vertically suspended at an interval in the front-rear direction in front of each edge of the pre-assembled steel frame gantry 40 and has a flange facing upward. The two stays 54
Are the two legs located at the rear of the four legs 53
53 is an L-shaped steel having a lower end fixed to the uppermost edge of the pre-assembled steel frame base 40 and an upper end fixed to the lower flange lower surface of the front support girder 51. The front receiving member 52 is parallel to the upper surface of the lower flange of each of the front support beams 51, which is located above each of the legs 53, in a direction perpendicular to the longitudinal direction of the pre-assembled steel frame mount 40. Thus, the lower end of the lower flange is fixed. The jig
Reference numeral 55 includes a fixing plate 56 for fixing the main reinforcing bar M, a frame 57 provided around the fixing plate 56, and five fixing legs 58 supporting the frame 57. The fixing plate 56 is a steel plate having a square shape in a front view and having main reinforcing bar fixing holes 56a provided at equal intervals in a peripheral portion. The main reinforcing bar M is fixed using a fixing tool such as a nut. The frame 57 has a U-shape in a front view using an L-shaped steel. Each of the fixing legs 58 has an upper end fixed to the frame 57 and a lower end fixed to each of the front receiving members 52.

The center support table 60 is shown in FIGS. 2 (a) and 2 (b).
And the base for the pre-assembled steel frame reinforcing bar as shown in FIG.
The center support beam 61 is located at the center edge of 40, four legs 63 and four stays 64 supporting the center support beam 61.
And the central support beams on the upper surface of the central support beams 61.
It supports a connection member J composed of two central receiving members 62 movably provided in the longitudinal direction of 61. The center support beam 61 has its axial direction oriented in the longitudinal direction of the pre-assembled steel frame gantry 40, one surface of one flange facing upward, and a longitudinally continuous connection to the upper flange at a predetermined interval. H steel with bolt holes. Each leg 63
Is H steel with two flanges, each of which is vertically suspended at an interval in the front-rear direction in front of each edge of the pre-assembled steel frame gantry 40 and has a flange facing upward. The four stays 64
Are located one by one on each side of the four legs 63, with the lower end fixed to the end of the transverse member 42 and the upper end fixed to the lower flange lower surface of the center support beam 61. L-shaped steel. Each of the central receiving members 62 has one surface of one flange facing upward, and a lower flange has bolt holes provided in a longitudinal direction with a predetermined interval therebetween. is there. The bolt hole and the bolt hole of the upper flange of each of the center support beams 61 can be fixed by bolting, and can be moved by removing the bolt. Each stay 64 is formed with a trap 66 by using three L-shaped steels 65 each. In the drawing, reference numeral 67 denotes a stopper.

FIG. 2 (A) and FIG. 2 (B)
As shown in the figure, a rear support girder 71 positioned at the rear edge of the pre-assembled steel frame gantry 40, eight legs 73 and eight stays 74 for supporting the rear support girder 71, It is composed of two rear receiving members 72 provided on the upper surface of the support girder 71 so as to be movable in the longitudinal direction of each of the rear support girder 71.
It is to support. The rear support girder 71 has a bolt whose axial direction is oriented in the longitudinal direction of the pre-assembled steel frame gantry 40, one face of one flange is directed upward, and the bolt is continuously connected to the upper flange in the longitudinal direction at a predetermined interval. H steel with holes. The legs 73 are provided two by two in front of each edge of the pre-assembled steel frame gantry 40 at an interval in the front-rear direction. This is H steel in which one surface of one flange faces upward. The eight stays 74 are located one by one on each side of the eight legs 73, with the lower end at the end of the transverse member 42 and the upper end at the lower flange lower surface of the rear support girder 71. L-shaped steel fixed to Each of the rear receiving members 72 is H steel shorter than the rear supporting girder 71 with one surface of one flange facing upward, and has a bolt hole in the lower flange.
The bolt hole and the bolt hole of the upper flange of the rear support girder 71 can be fixed by bolting, and can be moved by removing the bolt. Each stay 74 is formed with a ramp 76 by using eight L-shaped steels 75 each. In the drawing, reference numeral 77 is a stopper.

As shown in FIG. 2 (A), FIG. 2 (B), FIG. 2 (E) and FIG. 2 (F),
Two erection members and a gantry front portion F of both erection members 81
A jig 82 fixed to the erection member 81 located on the side,
It supports the other end of the column C, including a main reinforcing bar contact member 87 that contacts the end of the main reinforcing bar M.

The both mounting members 81 are provided with both end portions provided between the rear receiving members 72. It is an H steel having a central portion one step lower than both ends, and two connecting members 81a connect them.

As shown in FIG. 2 (e), the jig 82 includes a fixing plate 83 for fixing the main reinforcing bar, and a frame 84 provided around the fixing plate 83, and a fixing member 86 is fixed. Things. The fixing plate 83 is a square steel plate as viewed from the front, in which main reinforcing bar fixing holes 83a are provided at equal intervals in a peripheral portion. The main reinforcing bar M is fixed using a fixing tool such as a nut. The frame 84
Is a U-shaped front view using an L-shaped steel.

The main reinforcing bar contact member 87 is supported by a fixed leg 85 as shown in FIG. The frame is a quadrilateral frame having an outer contour when viewed from the front, and the end of the main reinforcing bar M abuts one surface of the frame.

Further, in the present embodiment, a front hoop muscle mount 90,
A center 91 hoop reinforcement mount 91, a rear hoop reinforcement mount 92,
And a carriage 100 for inserting a main reinforcing bar.

As shown in FIGS. 2 (a) and 2 (b), each of the hoop trolleys 90, 91, 92 is made of steel having a rectangular parallelepiped on which the hoop H is placed on the upper surface. Among them, casters 93 are attached to the lower surfaces of the front hoop reinforcing frame 90 and the central hoop reinforcing frame 91 so as to be movable in the longitudinal direction.

As shown in FIG. 3, the main rebar inserting cart 100 is provided with two main rebar M support bases 1 for supporting the main rebar M on a bogie 101.
03, which is capable of traveling on the track 20. The bogie 101 has a structure similar to that of the pre-assembled gantry for steel rebar 40 having steel wheels 102 provided on the lower surface thereof. Each of the main reinforcing bar M support bases 103 is a thick steel plate 104 having a plurality of main reinforcing bar insertion holes 104a at a peripheral portion, which are located at a gantry front portion F and a gantry rear portion B of the main reinforcing bar inserting cart 100, and It is provided with two frames 105 and a stay 106 for supporting.

 In the drawing, reference symbol W denotes a wire that binds the main reinforcing bar M.

 Next, a method of assembling the pre-assembled steel rebar will be described.

First, as shown in FIG.
The connection member J is mounted on the pre-assembled steel frame base 40 outside of (not shown in FIG. 4A).

Next, as shown in FIG. 4 (b), the pre-assembled steel frame gantry 40 is transferred into the prefab.

Next, as shown in FIG.
90, the center hoop bar 91 and the rear hoop bar mount
The hoop muscle H is placed on each of the 92. Then, the center hoop muscle 91 and the front hoop muscle 90 are inserted into the rear part B of the gantry, and are set at predetermined positions.

Next, as shown in FIG. 4 (d), the main reinforcing bar insertion 100 holding the main reinforcing bar M is transferred, and from the gantry front portion F of the pre-assembled steel frame gantry 40, the fixing plates 56 and 83 are removed. The main reinforcing bar M is inserted into the main reinforcing bar fixing holes 56a (not shown in FIG. 4D) and 83a.

Next, both ends of the main reinforcing bar M are fixed to fixing plate jigs 55 and 82, and a predetermined portion is bound by a wire W (not shown in FIG. 4D).

Next, predetermined parts such as the main reinforcing bar M and the connection member J are welded.

Next, as shown in FIG. 4 (e), the pre-assembled gantry 40 for the steel rebar is transferred from the gantry front F to outside the prefab.

Then, the column C is lifted from the pre-assembled steel frame support 40 and transferred to a predetermined place.

 Pre-assembly work can be performed by the above steps.

Next, a method of assembling the pre-assembled steel rebar having the above structure and the operation and effect of the pre-assembly apparatus A will be described.

It is possible to perform welding work at the time of rainfall or snowfall, etc., and the track 20 and the pre-assembled steel frame gantry 40
Since lifting or the like can be performed outside, pre-assembly work can be performed even during rainfall or snowfall, and the completed pre-assembled steel rebar can be loaded, carried out, or temporarily relocated.

Further, in the present embodiment, the hoop muscle H is arranged using the hoop muscle bases 90 and 91 with the casters 93.
The bar arrangement work can be easily performed as compared with the case where the hoop studs 90, 91 are not used.

In addition, a main reinforcing bar inserting truck 100 traveling on the track 20 is used.
The main reinforcement M is arranged using the
This arrangement can be easily performed as compared with the case where 100 is not used.

In addition, since the center support 60 and the rear support 70 are movable, columns C corresponding to various floor heights can be manufactured.

In addition, although the wheels 30 that roll on the track 20 are used as the moving means, the scope of the present invention is not intended to be limited thereto.
In the present invention, other things suitable for carrying out the present invention, such as a rubber tire that does not require a track, can be used. In such a case, since a track is not required, the manufacturing cost of the pre-assembled device A can be reduced as compared with the case of the present embodiment.

Further, in the present embodiment, the prefab 10 is used as a wet-proof body. However, the present invention is not intended to limit the scope of the present invention, and the present invention is to prevent the pillar C from being wet by rain, snow, and the like. I just need.

In addition, the pre-assembled steel frame gantry 40 is driven by human power, but the scope of the present invention is not limited thereto.In the present invention, a power unit may be provided and the power unit may be driven by the power unit. . In such a case, the working labor can be reduced as compared with the case of the above embodiment.

In the above embodiment, the pre-assembled steel frame gantry 40 moves. However, this is not intended to limit the scope of the present invention. For example, in the present invention, as shown in FIG. The prefab 10) may be moving.

〔The invention's effect〕

The present invention is configured as described above, and has the following effects.

The wet-proof body enables welding work in a stockyard without a roof, and the track and the gantry enable lifting and the like outside the wet-proof body, so that the height and width can be maintained even during rainfall or snowfall. The pre-assembly work can be performed in a room having no pre-assembly, and the completed pre-assembled steel rebar can be loaded, carried out, or temporarily relocated.

As a result, according to the present invention, it is possible to shorten the pre-assembly work period, and furthermore, the construction period, and reduce the construction cost, as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a perspective view of a pre-assembled device, and FIGS. 2 (a) to 2 (f) show an embodiment of the present invention. FIG. 2 (a) is a pre-assembled steel frame mount. FIG. 2 (b) is a front view of a pre-assembled steel frame gantry, FIG. 2 (c) is a sectional view taken along line aa of FIG. 2 (a), and FIG. FIG. 2 (a) is a bb view, FIG. 2 (e) is a cc cross-sectional view of FIG. 2 (a), FIG. 2 (f) is a dd cross-sectional view of FIG. 2 (a), Third
FIG. 4 is a perspective view of a main rebar insertion cart, FIGS. 4A to 4E are process diagrams, and FIG. 5 is a perspective view of a pre-assembled device according to another embodiment of the present invention. A: pre-assembled device, C: pillar, J: connection member, H:
... Hoop, M ... Main rebar, W ... Wire, F ... Front of gantry, B ... Rear of gantry, 10 ... Prefab, 11 ... Entrance, 20 ... Track, 30 ...
... Transportation means, 40 ... Stands for pre-assembled steel rebars, 50 ... Front support, 60 ... Center support, 70 ... Rear support, 80 ...
Main rebar fixing stand, 90 …… Front hoop stand, 91 …… Center hoop stand, 92 …… Back hoop stand, 100…
… A trolley for inserting the main rebar.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 21/12 105 E04B 1/30

Claims (2)

(57) [Claims] 1. A method of assembling a pre-assembled steel rebar comprising a connection member, a reinforcing bar and other pre-assembled members, said method comprising the steps of: mounting said connection member at a predetermined position on a gantry provided with a moving means; The gantry is moved into the wet-proof body, and the rebar and other pre-assembled members are attached to the connection member on the gantry and pre-assembled, and then the gantry is moved out of the wet-proof body and A method of assembling a pre-assembled steel rebar characterized by producing the pre-assembled steel rebar by carrying out, loading or temporarily relocating the assembled steel rebar. 2. A method for assembling a pre-assembled steel rebar comprising a connection member, a reinforcing bar, and other pre-assembled members, wherein a moving means is provided after the connection member is placed at a predetermined position on a gantry. The wet-proof body is moved so as to cover the gantry, and the rebar and other pre-assembled members are pre-assembled on the gantry by attaching the connection member, and then the upper part of the gantry is opened. A method of assembling a pre-assembled steel rebar, characterized in that the pre-assembled steel rebar is manufactured by moving the wetting-proof body to carry out, load or temporarily transfer the pre-assembled steel rebar.