JP2010255324A - Vibration control structure for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration control structure for a building which is rational, can eliminate waste, and is excellent in workability with no loss of living space using a contrivance in the installation part of a vibration control unit (a vibration control device) such as substituting the weight of a bouncing slab (a floor slab) which is a constituent member of a building frame for the weight (a mass) of the TMD. <P>SOLUTION: The vibration control structure of the building is constituted by providing the vibration control unit 9 on the exterior wall surface of the building 10. The vibration control unit 9 consists of a bouncing beam 1, the bouncing slab 3, a damping means, and a periodic adjusting spring. The bouncing slab 3 is provided above the bouncing beam 1 through the medium of an isolator 2 so that it can undergo horizontal displacement. One end of both the damping means and the periodic adjusting spring is connected to the bouncing beam 1, and the other end of both the damping means and the periodic adjusting spring is connected to the bouncing slab 3. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention belongs to the technical field of a building damping structure that suppresses shaking (vibration) of a building caused by an earthquake, a wind, etc., and more specifically, a building that can exert a damping function without impairing a living space Related to the seismic control structure.

Many technologies related to building seismic control structures are disclosed and implemented regardless of whether they are new buildings or existing buildings. There is a known seismic control structure with tuned mass damper (hereinafter referred to as TMD).
This TMD is a mass that is synchronized with a swing, and is connected by a spring and a damper. By adjusting the mass of the weight, the spring constant of the spring, or the damping coefficient of the damper as appropriate, it can be used for earthquakes, winds, etc. It is a device that absorbs vibration energy and synchronizes the response of the building by synchronizing with the shaking of the building.
When a building is controlled by this TMD, it is necessary to use a TMD weight having a required mass ratio with respect to the total weight of the building. It is necessary to secure a large space for installation in a), and there is a problem that the living space is damaged accordingly. In consideration of the work space in addition to the TMD installation space, this space may sacrifice a living space for one floor.
In addition, in order to have sufficient rigidity to install the TMD, it is necessary to perform large-scale construction such as concrete reinforcement work on the top of the building, which necessitates work at high places, poor workability, and cost. There was also a problem of being bulky.
Furthermore, since the TMD is configured to be installed at only one place on the top of the building, there is also a problem that it can cope only with the vibration of the primary period.

In recent years, an invention for effectively using space has been disclosed as a vibration control structure for buildings using this type of TMD (see Patent Document 1).
In the invention according to Patent Document 1, as shown in FIG. 1 and the like of the same Document 1, the building structure 3 installed on the ground 2 and the rooftop 4 of the building structure 3 are connected via the isolator 5. The rooftop ground 7 is installed so as to be movable in the horizontal direction H and can be directly planted. The vibration based on the vibration of the building structure 3 in the horizontal direction H. This is a technique for performing horizontal vibration control in the horizontal direction H with respect to the building structure 3 by vibration in the horizontal direction H of the roof ground 7 having a phase difference (see claim 1 and the like).
According to the present invention, by replacing the weight of the rooftop ground 7 that can be planted directly with the weight, the comfort or living comfort can be improved, so the space is effectively used. It can be said.

JP 2002-70359 A

Although the invention according to Patent Document 1 has a temporary effect as described above, it has been limited to the improvement of a space that could not be effectively used in the past to a space for planting the plant 6, and has led to a radical solution. The problem of damaging the living space is still not solved.
The roof ground 7 that can be directly planted with the plant 6 has a large structure (see paragraph [0027] of FIG. 1 and FIG. 1) and the roof floor 4 of the building structure 3. Since the installation work has to be carried out outdoors, the problem of being forced to work at a high place, poor workability and high cost has not been solved.
Furthermore, since the roof ground 7 is configured to be installed at only one location on the roof floor 4 of the building structure 3, the problem that only the primary period vibration can be dealt with has not been solved.

The purpose of the present invention is to replace the weight of the slab (main floor slab), which is a component of the building frame, with the TMD weight (mass). By devising it, the object is to provide a seismic control structure for a building that is rational and lean without impairing the living space and that has excellent workability.
The next object of the present invention is to provide a plurality of the above-mentioned seismic control units all around the outer wall surface of the building and every level, etc., and the damping means and the period adjusting spring of each seismic control unit are used for the seismic energy against the interlayer displacement of each layer. It is to provide a vibration control structure of a building that can flexibly suppress (reduce) high-order vibration generated in the building by individually adjusting so as to absorb the noise.

  As means for solving the above-described background art, the building vibration control structure according to the invention described in claim 1 is provided with a jumping beam and a horizontal displacement on the jumping beam via an isolator. A seismic control unit is provided on the outer wall surface of the building. The seismic control unit includes a spring slab, a damping unit connected to the spring beam, and one end connected to the spring slab and a period adjusting spring. It is characterized by being.

  The invention described in claim 2 is characterized in that, in the vibration control structure for a building described in claim 1, the vibration control unit is installed all around the outer wall surface of the building.

  According to a third aspect of the present invention, in the building vibration control structure according to the first or second aspect, the vibration control unit is provided for each level of the building.

  According to a fourth aspect of the present invention, in the vibration control structure for a building according to the third aspect, the damping means and the period adjusting spring of the vibration control unit are arranged so as to suppress a high-order period vibration generated in the building. It is characterized by being provided for each.

According to the vibration control structure of a building according to the present invention, the following effects are obtained.
1) It is necessary to provide a new weight differently by using the weight of the protruding slab (main floor slab), which was conventionally only a component of the building frame, as the TMD weight. There is no risk of damage to the living space. Therefore, rational and lean implementation is possible, which can greatly contribute to effective use of space.
2) Since there is no need for large installation work at the top of the building, it is excellent in workability.
3) Multiple seismic control units can be installed at sites where the seismic energy can be efficiently suppressed based on the structural design (for example, the entire circumference of the outer wall of the building and for each level). Since it is possible to individually adjust so as to absorb the vibration energy with respect to the interlayer displacement, not only the first period vibration generated in the building but also the higher period vibration can be flexibly suppressed.
4) A flexible seismic design is possible, for example, the seismic control unit can be installed on one side of the outer wall surface of the building according to the structural design of the building and can effectively work against eccentricity.
5) Since the seismic control unit is installed outside the veranda, balcony, etc., even if maintenance is necessary, maintenance from outside the building can be performed without entering the room.
6) It can be applied not only to new buildings but also to existing structures.

A is an elevation view schematically showing the overall structure of a building vibration control structure according to the present invention, and B is a plan view of the same. It is the front view which showed the principal part of the vibration control structure of the building which concerns on this invention. It is the side view which showed the principal part of the vibration control structure of the building which concerns on this invention.

  Next, an embodiment of a building vibration control structure according to the present invention will be described with reference to the drawings.

1 to 3 show an embodiment of a building vibration control structure according to claim 1.
The seismic control structure of this building includes a spring beam 1, a spring slab 3 provided on the spring beam 1 via a isolator 2 so as to be horizontally displaceable, and one end connected to the spring beam 1. The vibration control unit 9 including the damping means 4 and the period adjusting spring 5, the other end of which is connected to the protruding slab 3, is provided on the outer wall surface of the building 10.
In short, the vibration control structure of the building 10 according to the present invention impairs the living space by using the weight of the spring slab 3 that is a component of the building frame as a weight that synchronizes with the shaking of the building 10. This is a technology to achieve a seismic control effect without any problems.

  The seismic control unit 9 according to this embodiment is installed and implemented all around the outer wall surface of the building 10 (four locations in the four directions in the illustrated example) and every layer (four steps in the illustrated example). The design is not limited to this, and the design can be changed as appropriate according to the planar shape of the building to be constructed and the number of layers. In addition, it is not necessary to install it at every level of the building 10, and it is suitable for suppressing vibration energy based on the structural design, such as by installing it on multiple floors or at the top or bottom of the building 10 It can also be installed and implemented. Of course, depending on the structural design of the building 10, it can be installed only on one side of the outer wall surface of the building 10 (for example, the right side in FIG. 1) so that it can work effectively against eccentricity, It can also be carried out by being installed at two locations in the vertical direction in FIG. 1B or at two locations in the left-right direction.

In addition, although the damping structure of the building 10 which concerns on the example of illustration is implemented in the new building, it can also be implemented in the existing building. For example, when it is implemented in an existing building with a flat outer wall surface, it can be implemented by adding the spring beam 1 and the spring slab 3 or the like, and in an existing building having a spring part such as the spring beam 1. If you do, you can leave the available parts and add other parts.
Hereinafter, the spring beam 1, the isolator 2, the spring slab 3, the damping means 4, and the period adjusting spring 5 which are components of the vibration control unit 9 will be described in order.

The spring beam 1 is provided so as to be continuous with the beam of the frame of the building 10, and is constructed to protrude substantially horizontally from the outer wall surface of the building 10 to the outside. The size of the protruding beam 1 such as the protruding dimension, and the quantity to be installed for each level are appropriately changed according to the weight and shape of the protruding slab 3 to be constructed.
The projecting beam 1 according to the illustrated example is a steel reinforced concrete structure in which a reinforcing bar is placed on a steel beam (H-shaped steel) 6 provided to be continuous with the steel beam of the frame of the building 10 and concrete is placed. However, the present invention is not limited to this, and it can be implemented in reinforced concrete construction or in steel construction.

In this embodiment, the isolator 2 installed on the spring beam 1 has a property that it is soft in the horizontal direction and hard in the vertical direction by polymerizing thin steel plates and rubber alternately, and itself. The laminated rubber 2 having an appropriate damping performance is preferably used.
The laminated rubber 2 is installed on the upper surface of the spring beam 1 by means of welding, bolts or other joining means. Moreover, although the laminated rubber 2 which concerns on the example of illustration is installed in the ratio of one piece on the upper surface of the one spring slab 1, it is not limited to this, It supports the spring slab 3 to build in the stable state. It is carried out in a suitable number.

The spring slab 3 is disposed substantially parallel to the spring beam 1 and is installed on the upper surface of the laminated rubber (isolator) 2 so as to be horizontally displaceable.
The jumping slab 3 is installed between the outer wall surface of the building 10 so as to be horizontally displaced with a clearance C calculated based on the structural design. Note that the clearance C may be provided not only between the outer wall surface of the building 10 but also intermittently for each number of buildings.
Further, since the jumping slab 3 is used as a weight that synchronizes with the shaking of the building 10, its weight and shape are the required mass ratio with respect to the total weight of the building, and the number of use of the damping units 9. The design is appropriately changed according to the structural design considering the above. In short, it can be implemented flexibly with a configuration in which the weight is appropriately changed for each layer or the like.

As the damping means 4 attached between the spring beam 1 and the spring slab 3, a fluid damper such as an oil damper or an air damper having a function of damping horizontal vibration is preferably used.
The period adjusting spring 5 attached between the spring beam 1 and the spring slab 3 is an elastic force of the spring 5 so that the period of the spring slab 3 used as a weight is synchronized with the period of shaking of the building 10. , And is used to control the building 10 by co-seismic (resonating) the shaking of the building 10 and the shaking of the slab 3.
It should be noted that the damping means 4 and the period adjusting spring 5 according to the illustrated example are installed substantially horizontally between the projecting portion 3a hanging from the lower surface of the spring slab 3 and the spring beam 1, respectively. However, the present invention is not limited to this, and any installation form that appropriately exhibits each function may be used.

  In short, the vibration control unit 9 including the above-described spring beam 1, isolator 2, spring slab 3, damping means 4, and period adjusting spring 5 is in a period of the shaking of the building 10 caused by an earthquake, wind, or the like. The period of the slab 3 is synchronized to synchronize and absorb the vibration energy.

Therefore, according to the vibration control structure of the building 10 provided with the vibration control unit 9, the weight of the pop-up slab (main floor slab) 3 that was conventionally only a structural member of the building frame is used as the weight of the TMD. Since it can be used as (mass), it is not necessary to provide a new weight separately, and there is no possibility of damaging the living space. Therefore, rational and lean implementation is possible, which can greatly contribute to effective use of space.
Moreover, since it is not necessary to carry out a large-scale installation work at the top of the building 10, the workability is excellent.
Furthermore, a plurality of the vibration control units 9 can be installed in a portion (for example, the entire circumference of the outer wall surface of the building and each floor) where the vibration energy can be efficiently suppressed based on the structural design. 5 can be individually adjusted to absorb the vibration energy for the inter-layer displacement of each layer, so that not only the first-period vibration generated in the building but also the higher-order vibration can be flexibly suppressed. be able to.
In addition, flexible seismic design is possible, for example, the seismic control unit 9 can be installed only on one side of the building 10 according to the structural design of the building 10 and can effectively work against eccentricity.

  The embodiments have been described with reference to the drawings. However, the present invention is not limited to the illustrated examples, and includes a range of design changes and application variations that are usually made by those skilled in the art without departing from the technical idea thereof. I will mention that just in case.

1 Bounce beam 2 Isolator (laminated rubber)
3 Bounce slab 4 Damping means (damper)
5 Period adjustment spring 6 Steel beam (H-shaped steel)
9 Damping unit 10 Building

Claims (4)

  A jumping beam, a jumping slab provided on the same jumping beam via an isolator so as to be horizontally displaceable, one end part connected to the jumping beam, and the other end part connected to the jumping slab. A building damping structure, wherein a damping unit comprising a damping means and a period adjusting spring is provided on the outer wall surface of the building.   The building vibration control structure according to claim 1, wherein the vibration control unit is installed all around the outer wall surface of the building.   The building damping structure according to claim 1 or 2, wherein the damping unit is provided for each level of the building.   The building according to claim 3, wherein the damping means and the period adjusting spring of the seismic control unit are provided to be adjusted for each layer so as to suppress a high-order period vibration generated in the building. Seismic control structure.

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