JP2003064879A - Steel frame construction method and pallet for lifting steel frame beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steel frame construction method and a pallet for lifting a steel frame beam capable of securing good workability of steel frame construction while improving lifting efficiency of the steel frame beam. SOLUTION: This pallet 10 includes a floor member 13 functioning as a working floor and a clamp 14 for fixing a girder 22. In construction of the steel frame, the girder 22 is fixed to the pallet 10 by means of the clamp 14, a beam 24 is placed on the pallet 10 additionally, and then, the pallet 10 is lifted to a construction level. After the girder 22 is constructed, the beam 22 is constructed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel frame erection method and a pallet for lifting a steel beam used for erection of a steel beam.

[0002]

2. Description of the Related Art In steel construction, steel beams are hoisted to the construction floor by a heavy machine such as a crane, and erection work is performed. In that case, since the lifting capacity of heavy equipment is often determined by the pillar, which is the heaviest member, it is possible to use a few
Even if the whole book is lifted, the lifting efficiency will be considerably low. In addition, since the lifting and reciprocating time by heavy machinery occupies a large part of the construction period of steel frame construction, it is difficult to shorten the construction period if the lifting efficiency is low.

Therefore, a method using a beam pallet has been proposed in order to increase the lifting efficiency. In this method, as shown in FIG. 5, a steel beam 104 is loaded on a beam pallet 102 formed by assembling beam members 100 in a cross beam shape. Then, the beam pallet 102 is lifted up to the work floor, temporarily placed on the work floor, and then the steel beam 104 is erected.

[0004]

However, in this method, since the pallet is temporarily placed on the work floor as described above,
The space on the work floor is reduced, and workability is reduced. Moreover, since the beam pallet is heavy, the temporary placement position is limited to the large beam on the working floor. Therefore, the beam pallet is located directly below the girder on the first floor, which has been built, and this girder interferes with the slinging work of the girder, further lowering the workability.

The present invention has been made in view of the above points, and a steel frame erection method and a steel frame beam capable of ensuring good workability of a steel frame erection while enhancing the lifting efficiency of the steel frame girder. It is intended to provide a lifting pallet.

[0006]

The above-mentioned object is defined in claim 1.
After fixing the girder to the pallet, loading other beams to be constructed on the same floor as this girder on the pallet, and then hoisting the pallet to the construction floor and constructing the girder as described in 1. This is achieved by the steel frame erection method for erection of the other beam.

According to the first aspect of the present invention, since the girder and the beam to be constructed on the same floor as the girder are loaded on the pallet and hoisted, the lifting efficiency is improved. Also, at that time,
Since the girder is fixed to the pallet, when the construction of the girder is completed, the pallet will automatically be temporarily placed at the same height as the girder. That is, since it is not necessary to temporarily place the pallet on the work floor, the work floor can be widely used and workability is improved.

Further, the invention described in claim 2 is a pallet for lifting a steel frame beam in constructing the steel frame beam, and a pallet body including a floor portion that can function as a working floor, and the pallet. And a fixing means for fixing the girder to the main body.

According to the present invention, the pallet includes a floor portion that can function as a work floor, and fixing means for fixing the girder to the pallet body. Therefore, when the girder fixed by the fixing means is erected, the pallet is automatically temporarily placed at the same height as the girder. Therefore, it is not necessary to temporarily place the pallet on the work floor, and it is possible to perform erection work for other beams loaded on the pallet using the floor portion of the pallet as the work floor.

[0010]

1 to 3 are views for explaining a steel frame erection method which is an embodiment of the present invention.
Is a perspective view showing the pallet 10 used in this method,
FIG. 2 is a perspective view showing a state where the steel beams are loaded on the pallet 10, and FIG. 3 is a perspective view showing a state where the construction of the girder is completed by hoisting the pallets 10 loaded with the steel beams to the construction floor. is there.

As shown in FIG. 1, the pallet 10 is provided with a steel frame member 12 assembled in a cross beam shape, and a floor member 13 made of an iron plate or the like and capable of functioning as a work floor on the pallet 10. Steel aggregates 12 located on both sides of the pallet 10
A clamp 14 is attached to each of A and 12B. Each clamp 14 includes a pair of clamp members 14a.
And a clamp bolt 14b attached to each clamp member 14a. Clamp member 14
The base a is slidably provided with the groove 16 provided in the steel frame members 12A and 12B as a guide, whereby the spacing between the clamp members 14a can be adjusted. Further, pole members 18 are erected at both ends of each of the steel frame members 12A and 12B (that is, four corners of the pallet 10), and a master rope 20 is stretched between the pole members 18.

In constructing the steel frame, the pallet 10 is to be lifted to the construction floor as shown in FIG.
2 and beam 24 are loaded. Of these, the girder 22 is fixed to the pallet 10 by the clamp 14. That is, the clamp member 1 forming the clamp 14
4a is widened and the girder 22 is attached to the flange portion 22
The girders 22 are fixed to the pallet 10 by placing them so that a is located between the clamp members 14a, shortening the distance between the clamp members 14a, and tightening the flange portions 22a with the clamp bolts 14b. Also,
The beam 24 on the pallet 10 is prevented from falling by performing drop curing with a lashing belt or the like.

After loading the girders 22 and the girders 24 on the pallet 10, the beam hanging metal fittings 25 provided on the girders 22 are lifted by a crane and lifted to near the girder position on the construction floor. Then, as shown in FIG. 3, the girder 22 is connected to the steel frame column 26 to complete the erection. Since the girder 22 is clamped to the pallet 10 as described above,
When the construction of the pallet is completed, the pallet 10 will automatically
It will be temporarily placed at the same height as.

Thus, with the pallet 10 temporarily placed, the beam 24 loaded on the pallet 10 is slid using a crawler crane, a tower crane, etc., and the construction is sequentially performed. At that time, the floor member 1 of the pallet 10
3 can be a work floor for slinging the beam 24,
Further, since the master rope 20 is provided, work safety can be ensured.

FIG. 4 is a plan view schematically showing a construction floor on which the pallet 10 is temporarily placed. As shown in FIG. 4, the girder 2
2 using the pallet 10 temporarily placed, the crossbeams 24A, 24B, 24 at positions where the pallet 10 does not interfere with the construction.
It is possible to construct C etc. If the size of the pallet 10 is too large, the number of beam beams that the pallet 10 interferes with and cannot be built increases, so the size of the pallet 10 depends on its lifting load and the beam erection construction procedure. Try to design with consideration.

When the erection of the girders 22 and the girders 24 loaded on the pallet 10 is completed, the clamps of the clamp pair 14 are loosened while the pallet 10 is wire-wound.
Remove from the pallet 10 by tower crane etc.
Is hung to the ground floor. Since the pallet 10 is lightweight, efficiency can be improved by suspending several (for example, about 5) pallets together.

As described above, according to the steel frame erection method of this embodiment, the large beam 22 and the small beam 22 on the same floor as this are loaded on the pallet 10 and lifted to the construction floor. Therefore, it is not necessary to repeatedly reciprocate the pallet 10 between the construction floor and the ground to lift the light beam.
Lifting efficiency is improved. In addition, since the erection of the girder 22 and the girder 24 on the same floor can be continued near the height of the construction position, the construction period can be shortened and the girder 22 of the girder 24 can be slid on the girder 24 which has been completed before. It does not interfere with work.

When the construction of the girder 24 is completed, the pallet 10 is automatically temporarily placed on the girder 24, so that it is unnecessary to temporarily place the pallet 10 on the working floor on the construction floor. . Therefore, the space on the work floor is not restricted by the pallet 10, the workability is improved, and the safety passage can be sufficiently secured.

When hoisting the pallet 10, the girder 2
By suspending the two beam suspension fittings 25 provided on the No. 2, it becomes easier to balance and the workability of slinging is greatly improved, as compared with the case where the four corners of the pallet 10 are suspended.

[0020]

According to the present invention, it is possible to increase the lifting efficiency of the steel beam and ensure good workability of the steel frame construction.

[Brief description of drawings]

FIG. 1 is a perspective view showing a pallet used in a steel frame erection method according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where steel frame beams are loaded on a pallet.

FIG. 3 is a perspective view showing a state in which a pallet loaded with steel beams is hoisted to a work floor and the construction of the girder is completed.

FIG. 4 is a plan view schematically showing a construction floor on which pallets are temporarily placed.

FIG. 5 is a perspective view showing a conventional construction method using a beam pallet.

[Explanation of symbols]

10 pallets 12 Steel aggregate 13 Floor material 14 Clamp 20 Parent Line 22 Large beam 24 beam

Claims (2)

[Claims] 1. A girder is fixed to a pallet, another beam to be constructed on the same floor as this girder is loaded on the pallet, and then the pallet is lifted to a construction floor to construct the girder. A steel frame erection method characterized by erection of another beam. 2. A pallet for lifting a steel beam in constructing a steel beam, the pallet body including a floor portion that can function as a working floor, and a fixing means for fixing the girder to the pallet body. A pallet for hoisting a steel beam, comprising: