JP2950726B2 - Construction method of multi-layer suspension structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a multi-story suspension structure in which a structural member of a multi-story building is suspended from above so that a large space can be secured immediately below the structure.

[0002]

2. Description of the Related Art Conventionally, when constructing a building above a large space portion having a pillarless structure on the ground portion, for example, an existing railway is covered with the large space portion. There are various construction methods for constructing buildings above.

[0003]

In this type of construction method, in the case of a multi-layer suspension structure in which a pair of core pillars are erected on both sides of a large space portion to carry out construction work, the upper ends of these core pillars are used. It is necessary to install girders between the sections and fix the core columns. Then, the suspension material is erected after the girder is erected. However, since the girder and the suspension material are provided between the upper ends of the core pillars having no structural part below the girder and the suspension material, their construction work becomes extremely difficult and dangerous.

[0004] In view of the above-mentioned problems, the present invention allows the assembly of the girder and the suspension material to be installed between the upper end portions of the core pillar at the lower end of the core pillar. An object of the present invention is to provide a method of constructing a multi-layer suspension structure that can be constructed easily and safely.

[0005]

In order to achieve the above object, the present invention provides a method comprising:
In a multi-layer suspension structure in which a girder and a suspension material which is positioned below the girder and which is curved downward and which suspends a structural material of a building on the suspension material, first, the pair of core pillars is erected. After that, the girder and the suspension material are assembled between the lower ends of the core pillars, and the assembled girder and the suspension material are lifted up to the upper end of the core pillar and installed. A suspension stage serving as a scaffold is assembled between the pillars, and a structural material suspended by the suspension material is sequentially constructed downward while changing the suspension stage downward.

[0006]

According to the construction method of the multi-layer suspension structure of the present invention having the above-described structure, the girder and the suspension material to be arranged at the upper ends of the pair of core columns are first assembled between the lower ends of the core columns. Since the assembled girder and suspension material are raised to the upper end of the core column and installed, the girder and suspension material can be assembled at the lower end of the core column. Therefore, the work of assembling the girder and the suspension material can be simplified, and the safety of the work of constructing the girder and the suspension material can be improved by assembling at a low layer portion.

[0007] After the girder and the suspension material are installed on the upper end of the core pillar, a suspension stage is assembled.
Since the structural members suspended from the suspension material are sequentially constructed downward while the suspension stage is repositioned downward, the construction work of the structural materials such as the column members and the beam members is performed using the suspension stage as a scaffold. Therefore, the construction work of these structural materials can be performed safely and easily.

[0008]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 to FIG. 9 are configuration diagrams sequentially showing a building construction process according to an embodiment of a construction method of a multi-layer suspension structure according to the present invention.

That is, the multi-layer suspension structure of this embodiment is shown in FIG.
As shown in FIG. 2, a pair of core pillars 14 are provided upright at both ends of a building 12 to be constructed. Specifically, the core pillars 14 are constructed on the foundations 16 of the ground G. A truss beam 18 and a suspension member 20 located below the truss beam 18 are installed between the upper ends of the core columns 14 and 14. The truss girders 18 fix the upper ends of the core columns 14, 14, and the suspension member 20 suspends a structural member such as a column member 22 described later.

The suspension member 20 is also called a polygon, and is constituted by connecting rotatably pieces 20a formed of a steel material of an appropriate length to form a chain exhibiting flexibility as a whole. . The suspension member 20 has its center portion curved downward with both end portions attached to the pair of core columns 14, 14.
A column member 22 is suspended from the suspension member 20, and a beam member 24 is attached to the suspended column member 22, and the suspension member 20 is sequentially constructed from above to below.
The building 12 adopting the multi-layer suspension structure is constructed above the train station 26, and can proceed without stopping the operation of the train except for some works. It has become.

By the way, in constructing the building 12 employing such a multi-layer suspension structure, first, as shown in FIG. 1, the core pillars 14, 14 are erected on both sides of the station 26,
An artificial ground 28 is constructed by forming a large pillar-free space S including the station 26 in the lower part of the core pillars 14 and 14.
Next, as shown in FIG. 2, a lift-up system 30 is attached to the upper ends of the core pillars 14, 14, and the truss girders are located above the artificial ground 28 between the lower ends of the core pillars 14, 14. Assemble 18 so that it can move up and down.

When the assembly of the truss girder 18 is completed, the truss girder 18 is lifted up by a predetermined amount using the lift-up system 30 as shown in FIG. The both end pieces 20a of the material 20 are mounted. Next, as shown in FIG. 4, when the attachment of the both end pieces 20a is completed, the truss girders 18 and the both end pieces 20a are further lifted up, and the intermediate piece 20a is attached to the both end pieces 20a. Further, when the attachment of the intermediate portion piece 20a is completed, the lift is further raised, and all the pieces 20a are attached as shown in FIG. As described above, the truss girders 18 and the suspension members 20 are sequentially assembled while being lifted up.

The assembled truss girders 18 and suspension members 20 are lifted up to the upper ends of the core pillars 14 and 14 and fixed as shown in FIG. Thereafter, as shown in FIG. 7, a suspension stage 32 serving as a scaffold between the core pillars 14 and 14 is assembled under the suspension member 20.

Next, the column material 2 is added to the suspension material 20.
The column 22 and the beam 2 are attached while the hanging stage 32 is used as a scaffold and the hanging stage 32 is sequentially rearranged downward as shown in FIG.
Build 4 down. Then, as shown in FIG. 9, the skeleton of the building 12 is completed by attaching the column member 22 and the beam member 24 to the artificial ground 28. still,
The suspension stage 32 is removed when the pillar 22 is attached to the artificial ground 28.

According to the above-described construction method, in the multi-layer suspension structure of this embodiment, first, a pair of core pillars 14, 14 are erected, and then the lift-up system 30 is attached to the upper ends of the core pillars 14, 14, respectively. Since the truss girder 18 and the suspension member 20 are sequentially assembled by lifting up the truss girder 18 and the suspension member 20, the truss girder 18 and the suspension member 20 are lifted up.
To the artificial ground 28 installed at the lower end of the core pillars 14, 14.
Can be assembled as a scaffold. Therefore, since it is not necessary to assemble the truss girders 18 and the suspension members 20 at a high place, the assembling work can be performed easily and safely.

The truss girders 1 that have been assembled
8 and the suspension material 20 are core pillars 14, 14.
Then, the column member 22 and the beam member 24 suspended from the suspension member 20 are lifted up and fixed to the upper end portion of the suspension member 20, and then the suspension stage 32 assembled below the suspension member 20 is rearranged downward. They are built sequentially down. Therefore, the suspension stage 32
Can be used as a scaffold to construct the column member 22 and the beam member 24, and the column member 22 and the beam member 24 can be constructed safely and easily.

The lift-up system 30 includes:
It goes without saying that various known systems such as a jack-up type, a rack and pinion type, and a type using a PC strand or a wire to pull up can be applied.

[0018]

As described above, in the method of constructing a multi-layer suspension structure according to the present invention, first, a girder and a suspension material to be bridged between the upper ends of a pair of upright core pillars are first mounted on the core. Assembled between the lower ends of the pillars, and the assembled girders and suspension materials were raised to the upper ends of the core pillars and installed, so that these girders and suspension materials could be assembled at the lower ends of the core pillars. The assembly work can be performed easily and safely.

The suspension stage is assembled after the girder and the suspension material are installed at the upper end of the core column.
Since the suspending stages are rearranged downward and the structural members suspended by the suspension members are sequentially constructed downward, the assembling work of the structural members such as the pillar members and the beam members is performed using the suspending stage as a scaffold. Therefore, there are various excellent effects that the construction work of these structural materials can be performed safely and easily.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an upright state of a core pillar by a construction method according to the present invention.

FIG. 2 is a configuration diagram showing an assembled state of a girder by a construction method according to the present invention.

FIG. 3 is a configuration diagram showing an initial state of assembling a suspension material by a construction method according to the present invention.

FIG. 4 is a configuration diagram showing a state in the middle of assembling the suspension material by the construction method according to the present invention.

FIG. 5 is a configuration diagram showing a completed state of assembling a suspension material by a construction method according to the present invention.

FIG. 6 is a configuration diagram showing a fixed state of a girder and a suspension material by a construction method according to the present invention.

FIG. 7 is a configuration diagram showing a mounting state of a suspension stage according to a construction method according to the present invention.

FIG. 8 is a configuration diagram showing a column material and a beam material being constructed by the construction method according to the present invention.

FIG. 9 is a configuration diagram showing a completed state of skeleton assembly by the construction method according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 12 Building 14 Core pillar 18 Truss girder (girder) 20 Suspension material 22 Column material 24 Beam material 30 Lift-up system 32 Suspension stage

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigehisa Kage 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office (72) Inventor Junichi Kawahara 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Stock Obayashi Corporation Tokyo Head Office (56) References JP-A-4-213642 (JP, A) JP-A-4-153460 (JP, A) JP-A-57-140452 (JP, A) JP-A-48-31723 ( JP, A) JP-A-2-252834 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 21/14 E04B 1/35

Claims (1)

(57) [Claims] Claims: 1. A pair of upright standing core pillars,
In a multi-layer suspension structure in which a girder and a suspension material which is located below the girder and which is curved downward and are suspended and the structural material of a building is suspended on the suspension material, first, the pair of core pillars is erected. After that, the girder and the suspension material are assembled between the lower ends of the core pillars, and the assembled girder and the suspension material are lifted up to the upper end of the core pillar and installed. A method of constructing a multi-layer suspension structure, comprising: assembling a suspension stage serving as a scaffold between pillars, and sequentially constructing a structural material suspended by the suspension material downwardly while changing the suspension stage downward.