JP2001200654A - Vibration control building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce rolling of a whole building while obtaining a large displacement force to a vibration control damper so as to obtain higher vibration control effect. SOLUTION: In a vibration control building in which a central frame part 1 provided with a plurality of story layers is provided, an outer peripheral frame part 2 is provided at outer periphery of the central frame part 1, and a vibration control damper 4 is provided over the central frame part 1 and the outer peripheral frame part 2, an increase means P for increasing an input into the vibration control damper 4 in accordance with the action of an external force is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a center frame having a plurality of layers, an outer frame provided around the center frame, and a vibration damper provided between the center frame and the outer frame. About damping building which we established.

[0002]

2. Description of the Related Art In the case of a vertically elongated building, when a large horizontal force is applied due to an earthquake, wind, or the like, a large overturning moment is generated in the building body, and one side of the building is extended, and the other side of the building is expanded. A large bending deformation occurs in a state in which the body contracts. Even if such a building is configured to be able to absorb the shear energy due to the relative horizontal deformation between the upper and lower floors, the substantial vibration damping effect is reduced. Conventionally, as a damping building of this type, for example, as shown in FIG. 11, in order to effectively suppress the shaking mainly due to the bending deformation as described above,
In some cases, a vibration damper 4 is provided over the central frame portion 1 and the outer frame portion 2 so that a damper effect can be freely exerted on the relative vertical movement of the opposing side surfaces 1a and 2a (Japanese Patent Application Laid-Open No. HEI 9-208572). 7-269165).

[0003]

The vibration damping effect of the vibration damper is such that the larger the initial displacement force applied to the vibration damper (but within the design range), the greater the energy absorption and the lower the response. High effect can be obtained. According to the conventional vibration-damping building, it is necessary to relatively move up and down between the opposing side surfaces of the central frame portion and the outer frame portion in order to increase the displacement force to the vibration damper. For this purpose, the building must be constructed so that both the central frame and the outer frame are greatly bent and deformed, and the initial rolling of the entire building becomes large, and in that respect, further improvement is required. Was needed.

Accordingly, an object of the present invention is to provide a vibration damping building capable of increasing the displacement force applied to the vibration damper, reducing the roll of the entire building, and obtaining a higher vibration damping effect. There.

[0005]

The present invention is characterized in that a central frame 1 having a plurality of layers is provided on the outer periphery of the central frame 1 as exemplified in FIGS. In a damping building provided with an outer frame 2 and a damper 4 provided between the central frame 1 and the outer frame 2, an increase in the input to the damper 4 due to the action of an external force is provided. The means P is provided.

According to the characteristic configuration of the first aspect of the present invention, it is possible to increase the input to the vibration damper by the increasing means, while adopting a configuration capable of suppressing the roll of the entire building. Therefore, it is possible to expect the accompanying energy absorption, and it is possible to further improve the vibration damping effect. Therefore, for both the central frame and the outer frame,
By making full use of the effect of the damping damper, it is possible to configure a building with less lateral sway and high damping performance.

[0007] The characteristic structure of the invention of claim 2 is shown in Figs.
As exemplified in FIG. 9, the vibration damper 4 is formed so as to freely exert a damper effect with respect to the relative vertical movement between the central frame 1 and the outer frame 2, and the increasing means P The beam 9A extending from the outer frame 2 supports the first columnar portion 5B of the central frame 1 to increase the amount of bending of the beam 9A when an external force is applied. The purpose is to increase the amount of vertical movement relative to the outer frame 2 and increase the input to the vibration damper 4.

According to the characteristic structure of the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, when a large horizontal force is applied to the building due to an earthquake, wind, or the like, the central frame is provided. Both the outer frame and the outer frame are bent and deformed. However, as for the central frame, the first column of the structure is supported by the beam extending from the outer frame, so that the beam itself deforms flexibly. Can be added to the bending deformation of the central frame part, and the relative vertical movement amount between the central frame part and the outer peripheral frame part can be increased.
As a result, the input value to the vibration damper can be increased, the vibration damping effect can be exerted more strongly, and the roll of the entire building can be reduced.

As shown in FIGS. 1 and 9, a plurality of the beam portions 9A are provided at an interval above and below the beam portion 9A. The plurality of central frame portions 1 are separately supported. According to the characteristic configuration of the third aspect of the invention, in addition to the effect of the second aspect of the invention,
Because each beam supports each central frame, the weight of the central frame acting on each beam is reduced compared to, for example, supporting all central frames with one beam. can do. Then, it can be handled as a block for each central frame part, and the damping performance is set individually for each block, and fine-grained damping measures are taken according to the purpose of use of each block It is possible to freely incorporate in the building what was said and that each block was designed to obtain the same vibration damping performance and that it was constructed in a building with no vibration control bias, It is possible to improve design freedom. Furthermore, since each member (beam or column) of each block can be designed on the premise of the load state of the block, even in a building in which a plurality of blocks are stacked up and down, Each member can adopt a minimum design, so that the cost of the entire building can be reduced.

A feature of the invention according to claim 4 is that, as exemplified in FIG. 9, a second structural column 5C for connecting other vertically adjacent central frame parts 1 to each other is provided with a first structural member 5B of the first structural member 5B. It is located at a position outside the plane position.

According to the characteristic configuration of the invention of claim 4, in addition to the effect of the invention of claim 3 being achieved, the load of the central frame is added to the support by the beam, The structure can be supported by the second pillar portion, and the cross section of the beam portion can be reduced. Therefore, the space created by the reduction of the beam section can be effectively used, and conversely, the building height can be reduced by reducing the floor height by the lower beam structure due to the reduction. You can do what you said. In addition, although the structural second column portion is provided, the mounting position of the structural first column portion, which is a component of the central frame portion itself, is removed, so that the structural first column portion is bent when the central frame portion is bent and deformed. It is possible to make it difficult to inhibit the bending of the beam portion on which the column portion is supported. Therefore, as described above, when a large horizontal force is applied to the building due to an earthquake, wind, or the like, the bending deformation of the beam itself can be added to the bending deformation of the central frame, and the central frame and the outer frame can be considered. The amount of vertical movement relative to the part can be increased, the input value to the vibration damper can be increased, the vibration damping effect can be exerted more strongly, and the rolling of the entire building can be reduced. Becomes possible.

A characteristic feature of the invention according to claim 5 is that, as illustrated in FIG. 9, the structural second column portion 5C is provided at the center position or substantially at the center position of the beam portion 9A.

According to the characteristic configuration of the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the present invention, the beam can be provided when a large horizontal force is applied to the building due to an earthquake, wind, or the like. It is possible to make the absolute amount of the bending deformation (there are positive and negative) of the portion substantially the same at both ends of the center position (or almost the center position) of the beam portion to which the structural second column portion is attached, It becomes possible to make a well-balanced damping building.

As described above, the reference numerals are used for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

FIGS. 1 and 2 are a frame diagram and a plan view showing an embodiment of a building B relating to the damping building of the present invention.

The building B is a steel frame high-rise building having a plurality of stories, and is formed in a plan view so as to surround a core portion (corresponding to a central frame portion) 1 formed in a central portion and an outer peripheral side thereof. This is a so-called inner core type building that includes an outer peripheral portion (corresponding to an outer peripheral frame portion) 2 and a corridor lower portion 3 formed between the core portion 1 and the outer peripheral portion 2. In the corridor lower part 3, the core part 1 is provided below the floorboard.
A vibration damper 4 is provided in a state extending between the vibration damper 4 and the outer peripheral portion 2.

The core unit 1 is provided with common facilities such as elevators, stairs, and equipment spaces, and is provided with a plurality of columns 5, beams 6, floor plates 7, and the like as shown in FIGS. It is. The pillars 5 are composed of corner pillars 5A separately arranged at the four corners of the core portion 1 and intermediate pillars (corresponding to the first pillar portion of the structure) 5B separately arranged at the center of the four sides. Of the plurality of pillars 5, the middle pillar 5B is cut out at a plurality of floor pitches, and the middle pillar 5B is provided between the top floor and the bottom floor.
It is formed in a state where it is discontinuous on the floor where it is omitted. Specifically, in the present embodiment, the intermediate pillar 5B is pulled out on the first floor, the eleventh floor, the twenty-first floor, the thirty-first floor, the forty-first floor, and the forty-seventh floor (hereinafter, simply referred to as “the first floor”). "Pillar floor").
Therefore, the beam (hereinafter, simply referred to as a support beam) 6A located between the pillar-less floor and the floor directly above the pillar-less floor is the core portion 1 located between the pillar-less floor and the next pillar-less floor. Will support the weight of Due to such a relationship, the support beam 6A is formed to have a larger cross section than the beam 6B on the other floor, and is configured to support a load from above.

On the other hand, in the present embodiment, the outer peripheral portion 2 is provided with room facilities such as offices and stores, and as shown in FIGS. 1 and 3, a plurality of columns 8, beams 9, and floor plates 10 are provided. And so on. The pillars 8 are different from the core section 1 and are arranged so that each pillar is continuous on the same axis from the top floor to the bottom floor. Accordingly, the outer peripheral portion 2 itself is configured to support the load from the beam 9 and the floor plate 10 by the columns 8 on each floor. In addition, beam 9
9A, a beam (corresponding to a beam portion extending from the outer peripheral portion 2) provided at a beam position between the pillar-free floor and the floor immediately above it 9A
Is formed so as to penetrate through the core portion 1, and a part thereof is configured to be the support beam 6A.

As shown in FIGS. 2 and 3, the corridor lower part 3 has a floor receiving beam 3 a having one end fixed to the outer peripheral part 2 and the other end pinned to the core 1. And a floor plate 3b arranged on the floor receiving beam 3a. One end of the floor receiving beam 3a is connected to the outer peripheral portion 2 as described above.
The other end is attached to the end of the beam 6 of the core 1 via a pin connecting portion 11 so as to be swingable up and down. Therefore, even if there is a relative movement between the core portion 1 and the outer peripheral portion 2, it is possible to follow the relative movement by swinging of the floor receiving beam 3 a at the pin connecting portion 11 within a certain range. Becomes The floorboard 3b
Are set so that the upper surface thereof is flush with the floor plate 7 of the core portion 1 and the floor plate 10 of the outer peripheral portion 2 in a state of being installed on the floor receiving beam 3a. Further, both end edges of the floor plate 3b are formed so as to form a gap S between opposed end surfaces in a state where the both ends are abutted against the both floor plates 7 and 10. Even if there is a movement, it is configured so as to prevent the adjacent floorboards from being chipped or cracked against each other when they fall within the gap S.

The vibration damper 4 is, for example, an ultra-low yield point steel shear panel or a viscoelastic damper (see FIG. 4).
And the like, and is formed so as to freely exert a damper effect against the relative vertical movement between the core portion 1 and the outer peripheral portion 2. The extremely low yield point steel shear panel is a panel capable of absorbing vibration energy by drawing a hysteresis loop by shear yielding of the panel against external force, while a viscoelastic damper is laminated as shown in FIG. The viscoelastic body 4B is sandwiched between the plates 4A thus formed, and the viscoelastic body 4B is sheared vertically in response to an external force to form a hysteresis loop and absorb vibration energy. Both ends of the vibration damper 4 are respectively fixed to opposing side surfaces of the core portion 1 and the outer peripheral portion 2. Therefore, when the core portion 1 and the outer peripheral portion 2 are both bent and deformed by receiving a horizontal force due to an earthquake, wind, or the like, as shown in FIG.
The vibration damper 4 becomes a resistance to the relative vertical movement between the vibration damper 4 and the outer peripheral portion 2, and absorbs vibration energy, thereby reducing the vibration.

According to the building of the present embodiment, it is possible to exhibit a higher damping effect by the damping damper 4 described above. That is, when building B rolls,
Since the core 1 is supported on the beam 9A, as shown in FIG. 5, the core 1 is deformed into a state in which the movement due to the deflection of the beam 9A is added, and the side facing the outer peripheral portion 2 (vibration suppression). It is possible to increase the relative vertical movement amount of both ends of the damper). As a result, the input value to the damping damper 4 increases, and the absorption of vibration energy by the damping damper 4 is increased, so that the shaking of the entire building can be more efficiently reduced. Thus, according to the building B, the input to the vibration damper 4 can be increased, and the increasing means P for increasing the input includes an intermediate portion of the beam 9A extending from the outer peripheral portion 2. The core part 1
Is connected to support the intermediate column 5B, and the intermediate column 5B on the floor immediately below the intermediate column 5B is removed.

[Another Embodiment] Another embodiment will be described below.

<1> The damping building B is not limited to the steel-framed high-rise building described in the above embodiment, and may be, for example, a reinforced concrete structure or a steel-framed reinforced concrete structure. Also, the number of floors is not limited to high-rise buildings. <2> The pitch at which the beam portions 9A are provided is not limited to every tenth floor described in the above embodiment.
Other than the above, it may be set for every two or more integer floors. Further, only one beam 9A may be formed in one building (see FIG. 6). In addition to forming the beam portion 9A so as to penetrate the core portion (central frame portion) 1, for example, as shown in FIG. 7, the beam portion 9A can be configured as a cantilever. The beam 9A includes a core (central frame) 1
In addition to those provided to support the lower end of, for example,
As shown in FIG.
As shown in (1), it may be provided so as to support the upper end portion of the core portion 1. <3> As described in the above embodiment, the pin connecting portion 11 is not limited to being provided only at one end of the floor receiving beam 3a, and may be provided at both ends of the floor receiving beam 3a, for example. It is also possible to adopt a configuration not provided at all. <4> In addition, as shown in FIGS. 9 and 10, for example, the damping building B has a second pillar portion 5C that connects the other vertically adjacent central frame portions 1 to the pillar-less floor, If the intermediate column 5B is provided at a position out of the plane, the load of the vertical load on the beam 9A is reduced while maintaining the effect of increasing the input value to the vibration damper 4 by the increasing means P. It is possible to reduce the cross section of the beam, to effectively use the space created by the reduction in the cross section, and to reduce the floor height by reducing the cross section, thereby reducing the construction cost. In addition, if the structural second column portion 5C is provided at the center position or substantially at the center position of the beam portion 9A, the beam portion is deformed flexibly (there is positive and negative) due to the rolling of the building. Can be made substantially the same at both ends of the center position (or almost the center position) of the beam portion, and a well-balanced vibration-damping building can be obtained.

[Brief description of the drawings]

FIG. 1 Frame diagram of a building

Fig. 2 Floor plan of the building

FIG. 3 is an explanatory view of a main part showing a mounting state of a vibration damper.

FIG. 4 is a perspective view of an essential part showing a mounted state of a vibration damper.

FIG. 5 is a schematic view showing a deformed state of a building.

FIG. 6 is a frame diagram showing a building according to another embodiment;

FIG. 7 is a frame diagram showing a building according to another embodiment.

FIG. 8 is a frame diagram showing a building of another embodiment.

FIG. 9 is a frame diagram showing a building according to another embodiment.

FIG. 10 is a plan showing a building according to another embodiment.

FIG. 11 is a schematic diagram showing a conventional building.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Central frame part 2 Peripheral frame part 4 Vibration damper 5B Structure first column part 5C Structure second column part 9A Beam part P extended from the outer peripheral part P increasing means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsuo Asano 1-18-22 Nishiki, Naka-ku, Nagoya City, Aichi Prefecture Inside Nagoya Branch of Takenaka Corporation (72) Inventor Toru Furukawa Nishiki, Naka-ku, Nagoya City, Aichi Prefecture 1-18-18, Takenaka Corporation Nagoya Branch (72) Inventor Haruo Kitahara 1-18-18 Nishiki, Naka-ku, Nagoya-shi, Aichi Prefecture Nagoya Branch, Takenaka Corporation (72) Inventor Miyata Kazuyuki 1-18-22 Nishiki, Naka-ku, Nagoya City, Aichi Prefecture Inside Takenaka Corporation Nagoya Branch

Claims (5)

[Claims] 1. A vibration-damping building comprising: a central frame having a plurality of stories; an outer frame provided around an outer periphery of the central frame; and a damping damper provided between the central frame and the outer frame. A damping building provided with increasing means for increasing an input to the damping damper due to an external force. 2. The vibration damper is formed so as to exert a damper effect with respect to a relative vertical movement between the central frame and the outer frame, and the increasing means extends from the outer frame. The beam portion supports the first pillar portion of the structure of the central frame portion, and the amount of bending of the beam portion when an external force is applied increases, thereby increasing the amount of relative vertical movement between the central frame portion and the outer frame portion. 2. The damping building according to claim 1, wherein the input to the damping damper is increased. 3. The control system according to claim 2, wherein a plurality of said beam portions are provided at an interval above and below, and a plurality of said central frame portions are separately supported for each of said beam portions. Building. 4. The vibration damper according to claim 3, wherein a second pillar portion for connecting the vertically adjacent other central frame portions is provided at a position other than a plane position of the first pillar portion of the structure. building. 5. The vibration-damping building according to claim 4, wherein the structural second pillar portion is provided at a center position or substantially at a center position of the beam portion.