JPH042753B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a method of constructing a building such as a super high-rise building.

[Conventional technology]

In conventional construction work, standard modules are generally used in many designs, and in particular, when an intermediate frame such as a girder is to be erected in the span direction, it is often installed on the top floor.

However, as a recent trend in construction work, buildings are being designed in which intermediate frames such as girders are erected even on intermediate floors in order to make effective use of lower-rise areas or from a design perspective.

In order to construct intermediate structures such as these girders using conventional construction methods, commonly used assembly methods such as staging methods, venting methods, and sliding methods are employed that are tailored to the performance of the crane.

Figure 7 shows the staging method, in which a work stage 31 is created in advance, girders 2 are assembled on top of it in sequence, and when the finishing work of girders 2 is completed, the lower stage 31 is assembled. Completely eliminate.

Figure 8 shows the vent construction method.
The three parts are set up in advance, the girder 2 is assembled on top of them, and after the assembly of the girder 2 is completed, the vents 31 are sequentially dismantled.

Figure 9 shows the sliding method.
If it is not possible to assemble at the designated location using a crane,
First, the girder 2 is assembled on a scaffold 34 at a location where it can be assembled, and then the girder 2 is moved along the slide girder 35.

[Problem that the invention seeks to solve]

However, when constructing an intermediate frame such as a girder using the conventional method described above, the following problems arise.

Erection of girders takes time and the process is delayed.

Welding work, final tightening work, etc. will be performed in locations with poor conditions.

The number of man-hours required to work at height increases, making it difficult to implement safety measures.

Lifting machines become larger.

The method of the present invention is intended to solve these problems, and aims to simplify the method of constructing intermediate frames such as girders, ensure safety and quality of the entire building, and shorten the construction period.

[Means for solving problems]

The gist of the invention is to first erect the structures on both sides, such as the core part 1 of the building, and then assemble and assemble a crane 10 equipped with a lifting device 15 so as to span between the structures on both sides. The unitized frame structure such as the girder 2 is hoisted to a predetermined height by the crane 10, and is erected between the structures on both sides, and is carried out in advance of the erection of the structures on both sides to a predetermined height. A method of constructing a building, characterized by repeating the work of raising the structure to a predetermined height along the structures on both sides,
As the elevating device 15 of the crane 10, the core portion 1
Climbing by directly using the steel frame and skeleton after the erection of the structure on both sides of the structure is completed, etc. A rack device for lifting and lowering, etc. installed along the line can be considered.

As the crane 10, for example, an overhead traveling crane type can be used, and there is a vertical crane 11 supported by a lifting device 15, a horizontal beam 12 running on the rail of the vertical beam 11, and a horizontal crane mounted on the horizontal beam. A configuration including a hoisting device 13 is conceivable, but it is not necessarily limited to this type.

Further, the frame structure to be lifted is the girder 2 and other heavy objects attached thereto, which are made into blocks or units.

〔Example〕

Figures 5 and 6 show an example of a building to which the method of constructing a frame such as a girder 2 of the present invention is applied. A horizontal atrium 5 with a large cross section is formed in between.

This atrium 5 is intended to prevent wind damage occurring around skyscrapers and the like by allowing wind toward the building to pass through. In order to provide the atrium 5 with such a large cross section, the core part 1 in which the elevator and other equipment rooms are concentrated is provided on both sides of the atrium 5, and a general room or floor part is formed between both core parts 1. There is.

In this embodiment, in the above-mentioned design, it is assumed that the girder 2 is provided directly above the atrium 5 and at multiple heights above it.
The figure shows a method of constructing a girder 2 according to the present invention.

Hereinafter, the construction procedure will be explained based on FIGS. 1 to 4.

(1) First, as shown in FIG. 1, after the lower part 3 and the leading core parts 1 on both sides are erected to a predetermined height, the crane 10 is assembled between the leading core parts 1. The crane 10 has a vertical girder 11 with a rail on the upper surface, a horizontal girder 12 spanning between the vertical girders 11, and a hoisting device 1 attached to the horizontal girder 12.
3, with a vertical support 11 supported by the preceding core part 1.

At the same time, the steel frame of girder 2 will be assembled into a unit on site.

Next, using the crane 10 assembled as described above, the girder 2 assembled on the ground is lifted, set at a predetermined position, and connected to the preceding core section 1.

(2) Next, as shown in FIG. 2, the tower crane 20 of the core section 1 is raised, and preliminary erection of the core section 1, such as welding of columns and beam steel frames, is performed. The core portion 1 can be erected using the tower crane 20 by base climbing, for example, using the climbing method disclosed in Japanese Patent Publication No. 45-23776.

(3) After that, as shown in FIG. It is reinstalled at a predetermined height using power, other power, and hydraulic mechanisms.

At this position, hoist girder 2 which has been assembled into the ground again,
Set it in place. In addition, in parallel with this, the steel frames of columns and beams are erected on the girder 2 which has already been installed, and the core parts 1 are connected.

(4) Repeat the above operations to install the upper girder 2 and erect the steel frame between the girders 2 in sequence as shown in Figure 4.

After the erection of the final girder 2 is completed, the crane 10 is dismantled, and the remaining steel frame and other parts are lifted by the tower crane 20 of the core section 1.

[Effects of the invention] When constructing unitized intermediate structures such as girders, the labor required for assembling and dismantling temporary members such as stages and shoring is greatly reduced, and the number of man-hours required for work at high places is also reduced. It is possible to shorten the time and improve safety.

The intermediate frame structure can be assembled at an on-site processing facility, making quality control easier.

Using a crane that self-climbs along the preceding structures on both sides, the assembled frame can be immediately lifted up and erected at multiple predetermined positions safely and efficiently.

[Brief explanation of drawings]

1 to 4 are perspective views showing construction procedures in an embodiment of the present invention, FIG. 5 is a front view showing an example of a building to which the invention is applied, FIG. 6 is a side view thereof, and FIG.
FIG. 8 is a front view of the conventional example, and FIG. 9 is a perspective view of the conventional example. 1... Core part, 2... Main beam, 3... Low-rise part, 4
... Upper floor, 5... Atrium, 10... Crane,
11... Vertical, 12... Horizontal, 13... Hoisting device, 14... Hook, 15... Lifting device, 20
...Tower crane, 31...Stage, 32...
...Strut, 33...Vent, 34...Scaffolding, 35...
...Slide girder.

Claims (1)

[Claims] 1. The structures on both sides of the building are erected in advance, and a crane equipped with a lifting device is assembled to span the structures on both sides, and the crane is used to raise the frame structure, which has been assembled into a unit, to a predetermined height. The crane is hoisted up and erected between the structures on both sides, the structures on both sides are erected in advance to a predetermined height, and the crane is repeatedly raised along the structures on both sides to a predetermined height. A method of constructing a building characterized by: