JP2000303712A - Structure of mid-to-high rise building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide structure of a mid-to-high rise building extremely high in freedom of planning and extremely small in vibration at the time of earthquake. SOLUTION: A structure core 1 constituting a main part of a building frame is arranged in the center, a plural number of pillars 3 are arranged in the circumference of this structure core 1 and a floor slab 2 on each of floors arranged between the structure core 1 and the pillars 3 in the circumference respectively. Additionally, a plural number of base isolation devices 7 are arranged on a lower end part of the building frame. Additionally, a foundation 4 made of a lower part foundation 5 constructed on the ground and an upper part foundation 6 constructed on the upper side of this lower part foundation 5 is constructed on the lower end part of the building frame, and plural number of the base isolation devices 7 are arranged between the lower part foundation 5 and the upper part foundation 6 with specified intervals between them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a middle-to-high-rise building having a very high degree of freedom (free plan) in a floor plan and a very small vibration during an earthquake.

[0002]

2. Description of the Related Art For example, a method of installing a seismic isolation device is known as a method of reducing shaking during an earthquake in a high-rise apartment house or the like.

In a building provided with a seismic isolation device, a seismic isolation device such as a rubber bearing is usually installed between the building frame and a foundation supporting the building frame. In addition, in order to make the building stiff, the door-side wall on the wife's side is almost always made of an earthquake-resistant wall, which has a problem that the degree of freedom of the floor plan is greatly restricted.

[0004] As a building system for increasing the degree of freedom of the floor plan, for example, a core wall system in which columns are arranged at the outer periphery and seismic elements such as earthquake-resistant walls and braces are concentrated at the center, and columns are arranged at the outer periphery and the center. A double tube type in which the tubes are arranged in a double manner is known.

In the former core wall method, there is no column between the outer peripheral column and the central core, so the degree of freedom in the plan is high. Had a problem. On the other hand, the latter double tube method has problems such that the outer pillars are increased and the beam structure is increased, so that the livability is deteriorated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a structure of a middle-to-high-rise building having a very high degree of freedom in floor plan and a very small shaking during an earthquake.

[0007]

Means for Solving the Problems As means for solving the above problems, the structure of a middle-to-high-rise building according to the present invention is characterized in that a structure core which forms a main part of a building frame in the center is provided as a first aspect. A plurality of pillars around the body core, the floor slab of each floor is arranged between the structural core and the surrounding pillars,
And a seismic isolation device is arranged at the lower end of the building frame.

According to a second aspect of the present invention, in the structure of a high-rise building according to the first aspect, a foundation comprising a lower foundation constructed on the ground and an upper foundation constructed above the lower foundation is constructed, and the lower foundation and the upper foundation are constructed. A plurality of seismic isolation devices are arranged at predetermined intervals between the base and the base.

According to a third aspect of the present invention, in the structure of a middle- and high-rise building according to the first or second aspect, the upper foundation is constructed from a plurality of beams extending in two directions in a girder beam or lattice beam.

[0010]

1 to 3 show an embodiment of the present invention. In the drawings, a structural core 1 which is a main part of a building frame is disposed at a center portion. The floor slabs 2 of each floor are placed around the floor slabs.
The pillars 3 are arranged at a predetermined interval on the outer periphery of. In addition, a foundation 4 for supporting the building frame is constructed on the ground at the bottom of the root.

The structural core 1 and the surrounding pillars 3 are both R
Structure core 1 constructed of C structure or SRC structure, etc.
In particular, common spaces such as stairs, elevator halls and passages are arranged.

Further, the structural core 1 supports vertical loads such as loading loads transmitted from the floor slabs 2 of each floor together with the surrounding columns 3 and also has a seismic load by a cantilever type having the foundation 4 side as a fixed end. It is built to resist horizontal external force such as.

The floor slab 2 of each floor is made of, for example, unbond P
Unbonded flat slab with structure reinforced with C steel wire,
Alternatively, it is constructed as a void slab having a plurality of hollow portions, or a waffle void slab having a plurality of hollow portions and having a structure reinforced with lattice ribs. Further, the floor slab 2 of each floor constructed in this manner is supported at the center and the periphery by the structural body core 1 and the pillar 3, respectively.

The foundation 4 is composed of a lower foundation 5 constructed on the ground at the root bottom and an upper foundation 6 constructed on the upper side of the lower foundation 5, and a support between the lower foundation 5 and the upper foundation 6. A plurality of seismic isolation devices 7 made of rubber or the like are installed at predetermined intervals.

The upper foundation 6 also serves as the lowermost beam of the building frame, and has a beam structure of at least one layer (one floor) of the building frame to resist the overturning moment of the building frame. I have. In addition, the upper foundation 6 is constructed from a plurality of beams 6a and 6b extending in two directions so as to be able to resist a falling moment caused by a horizontal external force (seismic force) in an arbitrary direction in a cross beam or lattice beam shape.

The seismic isolation device 7 is installed at least at both ends of beams 6a and 6b extending in two directions.
It is also installed at the intersection of 6b and 6b. In addition, the lower foundation 5 is constructed as a so-called solid foundation or the like, which has a mat shape occupying the entire building area of the building frame.

In such a configuration, the floor slabs 2 of each floor are supported only by the central structural core 1 and the outer peripheral columns 3,
Since there is no pillar or beam between the structural core 1 and the pillar 3 on the outer periphery, a space with a very high degree of freedom can be created.

Further, since the input of seismic force can be reduced as much as possible by the function of the seismic isolation device 7, the shaking during an earthquake can be suppressed and the livability can be remarkably improved.

[0019]

The present invention has the above-described structure,
A structure core, which forms the main part of the building frame in the center, a plurality of pillars around the structure core, and floor slabs of each floor arranged between the structure core and surrounding pillars, respectively, are constructed. Since there are no pillars or beams between the core and the outer pillar, a space with a very high degree of freedom can be created.

In addition, a foundation consisting of a lower foundation constructed on the ground at the lower end of the building frame and an upper foundation constructed above the lower foundation is constructed, and a plurality of foundations are provided between the lower foundation and the upper foundation. Since the seismic isolation devices are arranged at predetermined intervals, the input of seismic force can be reduced as much as possible by the function of the seismic isolation device, so that the shaking during an earthquake can be suppressed as much as possible, and the livability can be significantly improved.

Furthermore, since the upper foundation is constructed in the form of a girder beam or a lattice beam from a plurality of beams extending in two directions, the upper moment is also provided by a horizontal external force (seismic force) in any direction due to the function of the seismic isolation device. Can be reduced, and the falling moment can be effectively resisted. Therefore, the overall bending and deformation due to the increase in the height can be reduced, and the seismic performance is also large.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a plan.

FIG. 2 is a plan view showing the shape of a foundation.

FIG. 3 is a longitudinal sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Structure core 2 Floor slab of each floor 3 Column 4 Foundation 5 Lower foundation 6 Upper foundation 7 Seismic isolation device

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Jun Okawa 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Inside Kashima Construction Co., Ltd. (72) Inventor Jin Goto 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd. (72) Inventor Kenichi Kono 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. F-term (reference) 2D046 DA12

Claims (3)

[Claims] 1. A structure core forming a main part of a building frame in the center, a plurality of pillars around the structure core, and floor slabs of each floor between the structure core and surrounding pillars, respectively.
And a seismic isolation device is provided at a lower end of the building frame. 2. A foundation comprising a lower foundation constructed on the ground and an upper foundation constructed above the lower foundation is constructed, and a plurality of seismic isolation devices are provided at predetermined intervals between the lower foundation and the upper foundation. The structure of a middle-to-high-rise building according to claim 1, wherein the structure is arranged in a building. 3. The structure of a middle- and high-rise building according to claim 2, wherein the upper foundation is constructed from a plurality of beams extending in two directions in a girder beam or lattice beam shape.