JP2002317498A - Frame structure of high-rise building - Google Patents

Abstract

(57) [Problem] To provide a frame structure of a high-rise building which can be designed very efficiently both structurally and cost-effectively. SOLUTION: A plurality of L-shaped planar core walls 1 are spaced apart from each other by a predetermined distance and arranged in a planar rectangular shape. Columns 2a, 2b, 2c, 2d of the PC structure are arranged at predetermined intervals on the outer periphery of the core wall 1. Outer pillars 2a, 2b, 2c, 2
The steel beams 3a and 3b of each floor are arranged between d, and the steel beams 4 of each floor are arranged between the core wall 1 and the outer pillar 2a. Boundary beam 6 is placed between core walls 1 and 1 on each floor, and core walls 1 and
The vibration damping devices 7 are arranged between them. Steel beam 3a,
3b and the steel beam 4 are joined to the core wall 1 via a joining hardware 9, and joined to the columns 2a, 2b, 2c, 2d via a fitting 8. Further, the floor slabs 5 of each floor are arranged between the steel beams 3a and 3b of each floor and the steel beams 4 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame structure of a high-rise building such as an office building or an apartment house, and has been developed particularly in order to improve seismic resistance and reduce costs.

[0002]

2. Description of the Related Art The present applicant has heretofore described a structural method of a high-rise building constructed as an office building or an apartment house.
For example, as shown in FIG. 5, in particular the core wall 20 which forms the main part of the skeleton at the center of the building, to develop a tube core wall Frames for each place the pillars 21 around the core wall 20, already 35 It has been put into practical use up to the floor of a building.

In this type of tube / core wall frame, the core wall 20, the columns 21 and the beams 22 are all constructed of a high-strength RC structure, and the columns 21 may be constructed of steel pipe concrete. An unbonded flat slab is used for the floor slab 23 of FIG.

[0004]

However, in the conventional tube / core wall frame, since the interval between the columns 21 is generally narrow, the span of the beam 22 disposed between the columns 21 and 21 is short. The beam reinforcement of beam 22 is the beam 22
Must be crossed at the center of the
In particular, the corner pillars 21a arranged at the corners of the building are concentrated in axial force (compression and tension) and receive a large load during an earthquake or the like. There were also problems such as that the arrangement work was extremely troublesome.

[0005] Also, the reinforcing bars of the boundary beams 22a disposed between the core walls 20, 20 need to be X-arranged because it is necessary to absorb the relative deformation between the core walls 20, 20. Even if it did, cracks in the concrete due to a major earthquake were inevitable, and they had to be repaired each time.

[0006] Pillars of a steel structure or a steel pipe concrete structure contribute to raising the construction cost, and the floor slab 23 of the unbonded flat slab structure has a span of 12 to 13 m from the core wall 20 to the outer periphery. In the limit, in the case of an office building requiring a span of about 15 to 18 m, there is a problem that a sufficient floor area cannot always be secured.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a frame structure of a high-rise building capable of performing an extremely efficient structural design, improving seismic resistance and reducing costs. Aim.

[0008]

According to a first aspect of the present invention, there is provided a frame structure of a high-rise building, wherein a plurality of core walls are arranged apart from each other,
Columns of RC structure are arranged on the outer periphery at predetermined intervals, beams of each floor are respectively arranged between the core wall and the outer peripheral columns, and between the outer peripheral columns, and the beams of the respective floors are arranged on the core wall at side surfaces thereof. And is joined to the pillar via a joint member provided in the joint portion thereof.

The planar shape and arrangement of the core wall in this case are not particularly limited, but the planar shape of the core wall may be, for example, a plane L-shape. May be arranged, for example, in a plane rectangular shape at the center of the frame.

[0010] In the frame structure of a high-rise building according to the second aspect, in the frame structure of the high-rise building according to the first aspect, a steel beam is used as a beam on each floor between the core wall and the outer pillar and between the outer pillars. It is characterized by being arranged.

According to a third aspect of the present invention, there is provided a high-rise building frame structure according to the first or second aspect, wherein a joint hardware is provided as a joining member on a side surface of the core wall, and the pillar is provided with a joint. A mouthpiece is provided with a mouthpiece as a mouthpiece member.

The planar shape and arrangement of the core wall in this case are not particularly limited, but the planar shape of the core wall may be, for example, a plane L-shape. May be arranged, for example, in a plane rectangular shape at the center of the frame.

According to a fourth aspect of the present invention, in the frame structure of a high-rise building according to the first, second or third aspect, a boundary beam is disposed between core walls of each floor, and a core on a rooftop floor is provided. It is characterized in that a vibration control device is arranged between the walls.

According to a fifth aspect of the present invention, there is provided a frame structure of a high-rise building according to the first, second or third aspect, wherein the vibration control is performed between core walls on each floor and / or between core walls on a rooftop floor. It is characterized in that the devices are arranged respectively.

[0016] The frame structure of a high-rise building according to claim 6 is the frame structure of a high-rise building according to claim 2, 3, 4 or 5, wherein low yield point steel is provided on both sides of the column arranged as a corner post. Wherein the steel beams are arranged.

In the frame structure of a high-rise building according to claim 7, in the frame structure of a high-rise building according to claim 4, a section steel made of a steel material having ductile is arranged as a boundary beam. It is characterized by the following.

The frame structure of a high-rise building according to claim 8 is the frame structure of a high-rise building according to claim 1, 2, 3, 4, 5, 6, or 7, wherein the floor slab is a deck slab or a half PC floor. Are arranged.

[0018]

1 to 4 show an example of a frame structure of a high-rise building according to the present invention. In FIG. A plurality of pillars 2a, 2b, 2c and 2d surround the core wall 1 respectively.
Are arranged at predetermined intervals in the circumferential direction.

Each of the outer pillars 2a, 2b, 2c, 2d
The steel beams 3a and 3b of each floor are continuously arranged annularly in the circumferential direction of the core wall 1 between the corners 1a of the core wall 1 and the columns 2a arranged on the extension of the core wall 1. Steel beams 4 on each floor are arranged respectively. further,
Floor slabs 5 of each floor are arranged between steel beams 3a and 3b of each floor and steel beams 4 respectively.

A plurality of core walls 1 are constructed, each of which is RC
As a multi-story earthquake-resistant wall that forms a plane L-shape (including both a plane equilateral mountain shape and a plane unequal mountain shape) that is continuous from the lowest floor to the rooftop floor (penthouse) by a structure (using concrete of 40 to 100 MPa) It is constructed and arranged to form a planar rectangular core.

The core walls 1 are spaced apart from each other by a predetermined distance in the circumferential direction, are joined to each other by a boundary beam 6 on each floor, and a honeycomb damper or an oil is provided between the core walls 1 and 1 on the rooftop (penthouse). Dampers and the like are arranged as the vibration control devices 7, respectively.

There are other examples of the arrangement of the core wall 1, for example, as shown in FIGS. 2A to 2E, respectively.
The office space can be provided.

For example, in the example shown in FIG. 2A, a plurality of planar L-shaped core walls 1 are arranged in a back-to-back state (a state facing each other) at the center of the shaft assembly. In the example, a plurality of planar L-shaped core walls 1 are arranged in a plane U-shape at the center of the shaft set and in a back-to-back state.

In the example shown in FIG. 2 (c), a plurality of planar L-shaped core walls 1 are arranged at the center of the shaft assembly in a planar U-shape and facing each other (inward state). When the arrangement interval between the core walls 1 and 1 is large, a flat flat core wall 1A is arranged as necessary.

Further, in the example shown in FIG. 2D, a plurality of plane L-shaped core walls 1 are respectively arranged in a plane rectangular shape at two places separated by a predetermined distance. In the example shown in FIG. A plurality of planar L-shaped core walls 1 are arranged at both ends of the shaft assembly in the spar direction, each in a planar U-shape and facing each other (inward state).

In each case, the adjacent core wall 1
The floors are joined to each other by a boundary beam (not shown) on each floor, and furthermore, a vibration control device (not shown) is arranged between the core walls 1 and 1 of the rooftop floor (penthouse).

The columns 2a, 2b, 2c and 2d are constructed by a high-strength RC structure (using concrete of about 40 to 100 MPa). Pillar)
Has been adopted.

In this case, if possible, a precast RC column capable of continuously constructing two to three layers may be employed.
In addition, at the positions where the steel beams 3a, 3b and the steel beams 4 on the respective floors of the columns 2a, 2b, 2c and 2d are respectively joined, for example, a fitting as shown in FIGS. 8 protrude from each other.

The fitting 8 is formed, for example, by cutting and welding a steel plate, and is buried in the joint of each column. Note that the fitting 8 may be formed as a casting.

In this case, the fittings 8 of the column 2a are projected in three directions at right angles, the fittings 8 of the column 2b are projected in two directions at right angles, and the fittings 8 of the columns 2c and 2d are formed in columns. It is protruding on both sides.

The steel beams 3a and the boundary beams 6 of each floor, which are arranged between the outer corners 2b and one or two pillars 2c on both sides of the corner pillars 2b, are made of H-shaped steel made of ductile steel. And the remaining steel beams 3b and 4
For example, an H-section steel made of a structural steel material is used.

Here, in particular, the above-mentioned steel beam is used as the steel beam 3a of each floor arranged between the corner post 2b and one or two pillars 2c on both sides of the corner post 2b.
This is because stress concentration on the corner post 2b is avoided by increasing the plastic deformation ability of the peripheral steel beam 3a.

The boundary beam 6 also functions as a damper for absorbing the relative displacement between the core walls 1 and 1.
For this reason, they are arranged so that they can be replaced after being damaged by a large earthquake.

The floor slab 5 of each floor employs a deck slab constructed by casting concrete on a deck plate or a half-PC floor for casting concrete on a PC board as a floor formwork. .

As the vibration control device 7, any type can be used as long as it can absorb vibration energy during an earthquake or a strong wind. For example, a honeycomb damper or an oil damper is used. It is arranged so that it can be easily exchanged with it.

The core wall 1 and the steel beam 4 thus arranged
The gaps are joined, for example, in a configuration as shown in FIGS. In the figure, a plurality of bonding hardwares 9 are buried at predetermined intervals on a side surface of a core wall 1 having an RC structure.
An end plate 1 is provided at the end of a steel beam 4 made of H-section steel.
0 is protruding.

The metal joint 9 has screw holes 9 of a predetermined depth at both ends.
a and 9b, and are embedded in the surface layer of the core wall 1 so as to be flush with the wall surface. Further, the metal joint 9 is firmly fixed in the concrete of the core wall 1 by an anchor member 11 made of a screw rebar or the like, which is screwed into the screw hole 9a.

In this case, the metal joint 9 is buried in the surface layer of the core wall 1 so as to be flush with the wall surface and does not protrude from the wall surface. Nothing to do.

Further, it is possible to continuously construct the core wall 1 from the lowest floor to the penthouse on the rooftop by a sliding foam method, so that it is possible to greatly reduce the labor required for the construction and shorten the construction period.

On the other hand, the end plate 10 is provided with a plurality of bolt holes 10a corresponding to the positions where the metal fittings 8 are embedded. And each bolt hole 10 of the end plate 10
The steel bolts 4 are joined to the side surfaces of the core wall 1 by joining the joining bolts 12 made of high-strength bolts to the screw holes 9b of the joining hardware 9 from a.

FIG. 3A shows an example in which a steel beam 4 is joined to one side of the core wall 1. In this case, a fixing metal 13 is attached to the opposite end of each anchor member 11 as a plate. Nuts protrude from each other.

FIG. 3B shows an example in which steel beams 4 are joined to both sides of the core wall 1, respectively.
The metal joints 9 are embedded in the surface layers on both sides of the core wall 1, the anchor members 11 are embedded between the metal joints 9, 9 on both sides, and the metal joints 9 on both sides are connected to the anchor members 11.
Are connected to each other.

The ends of the steel beams 3a, 3b and the steel beams 4 of the respective floors are joined to the fittings 8 of the respective columns 2a, 2b, 2c and 2d by the joining plate 14 and the high-strength bolts 15, respectively. I have.

The steel beams 3a and 3b are connected to the pillars 2a and 2b, respectively.
b, 2c and 2d can be joined to the connection
A method in which the steel beam 4 is joined to the side portion of the core wall 1 via the joining hardware 9 may be used.

[0045]

The present invention has been described above.
In particular, by combining a frame composed of a central core wall and a column of RC structure capable of bearing the shearing force of the outer periphery and a steel beam, the layer shearing force can be distributed to the core wall and the outer periphery. Design.

Further, since the columns are constructed by the RC structure, the cost can be reduced, and since the steel beams are used, the beam span can be increased, and the complicated beam arrangement can be omitted, so that the construction can be greatly reduced. Labor savings.

Further, since the vibration damping device is arranged between the core walls, it is possible to suppress the bending deformation of the core walls and to improve the properties of the building against wind sway and the like.

[Brief description of the drawings]

FIG. 1 shows an example of a frame structure of a high-rise building according to the present invention, wherein (a) is a plan view and (b) is an elevation view.

FIGS. 2A to 2E are plan views showing examples of core wall arrangement.

FIG. 3 shows an example of a joint between a core wall and a steel beam,
(A), (b) is a longitudinal sectional view, and (c) is an enlarged view of a part (b) in (b).

FIGS. 4A, 4B, and 4C are perspective views showing an example of a joint portion between an RC structure column and a steel beam.

FIG. 5 is a plan view showing an example of a frame structure of a conventional high-rise building.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core wall 2 pillar 2a pillar 2b pillar 2c pillar 2d pillar 3a steel beam 3b steel beam 4 steel beam 5 floor slab 6 boundary beam 7 damping device 8 terminal fitting 9 joint metal 9a screw hole 9b screw hole 10 end plate 11 anchor Member 12 Joint bolt 13 Fixing hardware 14 Joint plate 15 High strength bolt

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Tomita 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Takuro Yaguchi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd. (72) Inventor Kansuke Honma 1-2-7 Moto Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Tomoyasu Kato 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No. 7 Inside Kashima Construction Co., Ltd. (72) Inventor Kazunari Makibe 1-2-7 Moto-Akasaka, Minato-ku, Tokyo F-term inside Kashima Construction Co., Ltd. (Reference) 2E001 DG01 FA18 LA19

Claims (8)

[Claims] 1. A plurality of core walls are spaced apart from each other;
Columns of RC structure are arranged at predetermined intervals on the outer periphery, beams of each floor are arranged between the core wall and the outer peripheral columns and between the outer peripheral columns, respectively, and the beams are provided on the side surfaces of the core wall. A frame structure of a high-rise building, wherein the frame structure is joined to the pillar via a joint member provided at the joint portion. 2. The frame structure of a high-rise building according to claim 1, wherein steel beams are arranged as beams on each floor between the core wall and the outer pillar and between the outer pillars. 3. The timber frame of a high-rise building according to claim 1, wherein a joint metal member is provided as a joint member on a side surface portion of the core wall, and a joint metal member is provided as a joint member at a joint portion of the pillar. Construction. 4. A boundary beam is arranged between the core walls of each floor,
4. The frame structure of a high-rise building according to claim 1, wherein a vibration control device is disposed between core walls on a rooftop floor. 5. The frame structure of a high-rise building according to claim 1, wherein the vibration damping devices are arranged between the core walls on each floor and / or between the core walls on the roof floor. 6. The shaft of a high-rise building according to claim 2, wherein steel beams made of low yield point steel are respectively arranged on both sides of the pillars arranged as corner pillars. Pair structure. 7. The framed structure of a high-rise building according to claim 4, wherein a section steel made of a steel material having ductile is arranged as a boundary beam. 8. The floor slab according to claim 1, wherein a deck slab or a half PC floor is arranged.
The frame structure of a high-rise building according to 2, 3, 4, 5, 6, or 7.