JPH1113141A - Constructing method of composite structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by projecting a column steel frame, to which a reinforced beam in the inter-beam direction is built, in specified length from height, in which a beam in the girder direction is disposed, supporting a temporary beam at the upper ends of both column steel frames and constructing the reinforced beam under a suspended state. SOLUTION: In a composite structure 15, in which beams in the girder direction are formed in steel-framed beams 12 or steel-framed reinforced beams and a beam in the inter-beam direction 13 is formed in a reinforced beam 14, coin steel frames 16 are disposed in upright while the column steel frames 16 are projected in specified length from height, in which the steel-framed beams 12 in the girder direction are arranged. A temporary beam 17, from which the beforehand assembled reinforced beam 14 in the inter-beam direction 13 are hung down, is hung up and placed at the upper ends of both column steel frames 16 projected in specified length by a crane, and the reinforced beam 14 is built at a fixed place. Hanging jigs 18 supported to the temporary beam 17 consist of angle materials 19 installed to the temporary beam 17 and hang bolts 20 mounted at both ends of the angle material 19, and the upper end reinforcement of the reinforced beam 14 is supported. Accordingly, the erection works and removing works of supports need not be conducted, and workability and safety can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a composite structure in which a beam in a row direction has a steel structure or a steel frame structure, and a beam in a direction between beams has a steel structure.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
Is a steel beam or a steel reinforced beam 2 and the inter-beam direction 3 is a reinforced beam 4. In a composite structure in which these beams are erected on a column steel frame 5 or the like, the reinforced beam 4 in the inter-beam direction 3 is assembled with a beam formwork. Until the completion of the work, it is necessary to provide a supporting structure for supporting the rebar beam 4 in order to prevent the beam from being deformed by its own weight.

[0003] That is, in the composite structure as described above, as shown in FIG. 11, a plurality of pillars 6 formed by angles or the like are erected on a concrete floor surface 7 of the reinforcing beam 4 in the beam direction 3 by The upper arm 4a of the reinforcing bar 4 is supported by a support arm 8 provided at the upper end of the support column 6.
In addition, the code | symbol 9 in a figure shows a mold.

[0004]

However, the conventional method has a problem that the work for erecting and removing the support column 6 is complicated, and the workability is poor.

In addition, the standing condition of the column 6 is unstable,
There was also a problem of lack of safety.

[0006] Furthermore, since the pillar 6 cannot be removed at the time of concrete placement after wall arrangement, it has to be buried together with the wall reinforcement as it is, resulting in an increase in cost.

Therefore, in the method of the prior art, the workability is improved by easily laying the reinforced beams 4 in the inter-beam direction 3, the safety is improved, and the columns 6 are embedded together with the wall bars. There is a problem that needs to be solved in order to solve the inconvenience.

[0008]

As a specific means for solving the problems of the prior art, the present invention relates to a composite structure in which the beam in the row direction is a steel structure or a steel frame structure, and the beam in the direction between the beams is a steel structure. In the object, the column-shaped steel columns at both ends where the reinforcing beams in the inter-beam direction are erected are formed by projecting a predetermined length from the height at which the beams in the girder direction are provided, and each of the projecting double-column steel frames is formed. A method of constructing a composite structure, comprising: supporting a temporary beam of a predetermined length in which a pre-assembled inter-beam direction reinforcing steel beam is suspended at an upper end of the prefabricated beam; and suspending the suspended reinforcing steel beam at a predetermined position. Is provided.

Further, the reinforcing beam in the direction between the beams is suspended via a suspending jig supported by the temporary beam.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the present invention relates to a composite structure 15 in which the beam in the beam direction 11 is a steel beam 12 or a steel reinforced beam and the beam in the interbeam direction 13 is a reinforced beam 14, This is a construction method in which the bridge 14 is installed at a predetermined position between the column steel frames 16.

First, as shown in FIGS. 1 and 2, a plurality of column steel frames 16 are erected at a column installation position by a predetermined method.
In this case, the column steel frame 16 is connected to the steel beam 1 in the row direction 11.
2 is formed so as to protrude by a predetermined length from the height at which it is disposed.

As shown in FIG. 3, for example, a spring-type positioning jig 16b is desirably attached to the upper end 16a of the column steel frame 16 so that a temporary beam 17 described later can be supported in a stable state. . The positioning jig 16b
Of course, a catch clamp may be used in place of the above.

Next, the steel columns 16 projecting a predetermined length are used.
On each upper end 16a, a temporary beam 17 in which a pre-assembled reinforcing beam 14 in the interbeam direction 13 is suspended is lifted by a crane or the like and placed, and the suspended reinforcing beam 14 is erected at a predetermined position. .

As shown in FIG. 4, the rebar beam 14 is suspended via a suspending jig 18 supported by the temporary beam 17.

The suspension jig 18 includes an angle member 19 attached to an appropriate position of the temporary beam 17, suspension bolts 20 provided at both ends of the angle member 19, and an angle member 21 attached to a lower portion of both suspension bolts 20. The upper end bar 14a of the reinforcing bar 14 may be supported by the angle member 21.

At this time, the length of the suspension bolt 20 must be adjusted in advance so that the reinforcing beam 14 can be installed at a predetermined position. In addition, the code | symbol 22 in FIG. 4 shows a turnbuckle, and the code | symbol 23 shows the stirrup of the rebar beam 14. FIG.

By arranging the reinforcing bars 14 as described above, it is possible to eliminate the need for supporting columns for supporting the reinforcing bars 14 in the inter-beam direction 13. In addition, when the wall is provided on the beam, it is economical because there is no need to embed the pillar.

Next, a specific method of assembling the above-described method for constructing a composite structure will be described. First, FIG.
As shown in (1), the steel reinforced beams 25 in the girder direction 11 and the column steel frames 16 on which the steel reinforced beams 25 are erected are laid in advance in the ground yard 24. At this time, as described above, the upper end 16a of the column steel frame 16 is formed so as to protrude by a predetermined length from the steel frame beam 25. Incidentally, reference numeral 26 in FIG.
Show scaffolds for terrain.

Further, as shown in FIG. 6, in another ground yard 27, the frame-to-beam direction 13 is
Reinforced beams 14 are laid in advance in advance.

Then, as shown in FIG. 7, after the formation of the predetermined concrete slab 29, the pre-landed column steel frame 1 is formed.
6 and the steel reinforced beam 25 are lifted by a crane or the like, and the column steel frame 16 is connected to the column steel frame 30 that has been formed in the concrete slab 29 in advance.

Further, after confirming the installation of the column steel frame 16, the predetermined connecting member 31 is fully tightened to firmly connect the column steel frame 30 and the column steel frame 16. In addition, the code | symbol 32 in FIG. 7 shows the pillar main bar, and the code | symbol 33 shows a columnar bar | burr.

As described above, the steel reinforced beam 2 in the row direction 11
After constructing 5 and column steel frame 16, as shown in FIG.
The reinforced beams 14 laid in the ground yard 27 and the temporary beams 17 hanging down the reinforced beams 14 are lifted by a crane or the like,
Both ends of the temporary beam 17 are placed on the upper ends 16a, 16a of the opposing columnar steel frames 16, 16, respectively, and the reinforcing beam 14 is erected at a predetermined position.

Thereafter, as shown in FIG.
The column main reinforcement 32 is arranged at 30 and is pressed. Furthermore,
The formwork is erected on the reinforced beams 14 and the steel reinforced beams 25 and the like.
C slabs, balconies, PC corridors will be laid, slabs will be laid, and concrete will be cast. By repeating the steps described above, a multi-story composite structure is constructed.

[0024]

As described above, the method for constructing a composite structure according to the present invention is directed to a composite structure in which the beams in the beam direction are steel structures or steel frame structures, and the beams in the direction between beams are steel structures. The column steel members at both ends where the reinforcing beams in the inter-beam direction are erected are formed by projecting a predetermined length from the height at which the beams in the girder direction are provided, and formed at the upper end of each of the protruding steel columns. By supporting a temporary beam of a predetermined length in which a pre-assembled reinforcing beam in the inter-beam direction is suspended, and reinforcing the suspended reinforcing beam at a predetermined position, a reinforcing beam in the inter-beam direction is provided as in the conventional example. Since there is no need for a support to support
There is no need to perform the work of erecting and removing the columns, and an excellent effect that workability and safety are improved is achieved.

Further, the hanging jig has an excellent effect that it can be reused on each floor and the working cost can be reduced.

Further, since the reinforcing steel beams in the direction between the beams are suspended through the suspending jigs supported by the temporary beams, an excellent effect that the hanging state of the reinforcing steel beams is stabilized is exhibited.

[Brief description of the drawings]

FIG. 1 is a plan view of a composite structure.

FIG. 2 is a front view showing a reinforcing steel beam and a column steel frame in a direction between beams.

FIG. 3 is a perspective view showing an upper end of a column steel frame.

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is an explanatory view showing a state in which a steel reinforced beam in the girder direction and a column steel frame are preliminarily laid.

FIG. 6 is an explanatory diagram showing a state in which reinforcing beams in the direction between beams are laid in advance on a land.

FIG. 7 is an explanatory diagram showing a construction state of a column steel frame and a steel reinforced beam.

FIG. 8 is an explanatory view showing a state in which a temporary beam is placed on a column steel frame and a reinforced beam is erected.

FIG. 9 is an explanatory view showing a state where a column main bar is arranged on a column steel frame.

FIG. 10 is a plan view showing beams in a row direction and an inter-beam direction in a composite structure according to a conventional example.

FIG. 11 is a cross-sectional view showing a method of supporting a reinforcing beam in a direction between beams in a composite structure according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Girder direction 2 Steel beam or steel reinforced beam 3 Beam direction 4 Reinforced beam 4a Top reinforcement 5 Column steel 6 Support 7 Concrete floor 8 Support arm 9 Formwork 11 Girder direction 12 Steel beam 13 Beam direction 14 Reinforcement beam 14a top reinforcement 15 Composite structure 16 Column steel frame 16a Upper end 16b Positioning jig 17 Temporary beam 18 Hanging jig 19 Angle material 20 Hanging bolt 21 Angle material 22 Turnbuckle 23 Stirrup 24 Soil yard 25 Steel reinforced beam 26 Scaffolding for groundwork 27 Ground yard 28 Frame scaffolding 29 Concrete slab 30 Column steel 31 Connecting member 32 Column main bar 33 Column band bar

Claims (2)

[Claims] 1. A composite structure in which beams in the girder direction have a steel structure or a steel reinforced structure, and beams in the direction between beams have a reinforced structure. A beam of a predetermined length is formed by projecting a predetermined length from the height at which the beams in the girder direction are provided, and a pre-assembled inter-beam direction reinforcing steel beam is suspended at the upper end of each of the projecting steel columns. A method of constructing a composite structure, comprising: supporting a temporary beam of the above (1), and erected a reinforcing steel beam at a predetermined position. 2. The method for constructing a composite structure according to claim 1, wherein the reinforcing beam in the direction between the beams is suspended via a suspending jig supported by the temporary beam.