JP2024021161A - vibration damping building - Google Patents

Abstract

[Problem] In a vibration-damping building that constructs an internal building inside an external building and connects them with damping members, it is possible to ensure the rigidity of the internal building and achieve high control without being constrained by the height or plan shape of the building. The purpose is to obtain a vibration effect. [Solution] An internal building that is more rigid than the external building is constructed inside the external building, and a damping member is provided in a gap between the internal building and the external building, and the damping member In the vibration-damping building that connects the internal building and the external building, the internal building is divided into a lower building and an upper building, and is integrated with the external building at an intermediate part in the height direction of the upper building. A connection structure is provided to be connected, and the vibration damping member is provided at least near the upper end of each of the lower building and the upper building. [Selection diagram] Figure 1

Description

The present invention relates to a vibration-damping building that includes an external building and an internal building that has high rigidity and is constructed inside the external building.

2. Description of the Related Art Conventionally, vibration-damping buildings have been known in which a highly rigid internal building is constructed inside an external building having a rigid frame, and these are connected by vibration-damping members. This vibration-damping building utilizes the fact that the deformation modes of the external and internal buildings are different when a large horizontal force due to earthquake force or wind load is input, and efficiently absorbs vibration energy through vibration-damping members. It is.

Japanese Patent Application Publication No. 2009-19479

Since the above-mentioned vibration-damping building can improve earthquake resistance without increasing the rigidity of the external building, it is possible to secure flexibility in the plan of the living space by omitting beams and columns of the external building. be. However, when trying to adopt the vibration damping building of Patent Document 1 for ultra-high-rise buildings that exceed the height of skyscrapers or buildings with small plan shapes, the rigidity of the internal building cannot be ensured, resulting in a satisfactory vibration damping effect. was difficult to obtain.

The present invention has been made in view of such problems, and its main purpose is to improve the height and plane of the building in a vibration damping building in which an internal building is constructed inside an external building and these are connected by vibration damping members. The purpose is to ensure the rigidity of the internal building and obtain a high vibration damping effect without being constrained by the shape.

In order to achieve this object, the vibration-damping building of the present invention constructs an internal building that is more rigid than the external building inside the external building, and also constructs a vibration damping building in the gap provided between the internal building and the external building. In a vibration damping building that is provided with a damping member and connects the internal building and the external building with the damping member, the internal building is divided into a lower building and an upper building, and the height of the upper building is A connection structure integrally connected to the external building is provided at a direction intermediate portion, and the vibration damping member is provided at least near the upper end of each of the lower building and the upper building.

The vibration-damping building of the present invention is characterized in that a plurality of the connection structures are provided in the height direction.

The vibration damping building of the present invention is characterized in that a belt truss is used in the connection structure.

The vibration damping building of the present invention is characterized in that the vibration damping member is provided near the upper end and near the lower end of the upper building.

The vibration damping building of the present invention is characterized in that a vertical load transmission mechanism is provided between the lower building and the upper building.

The vibration damping building of the present invention is characterized in that the vertical load transmission mechanism is a linear rolling bearing.

The vibration-damping building of the present invention is characterized in that the connection structure is provided with a work floor.

The vibration-damping building of the present invention is characterized in that the external building has a roof frame, and the roof frame and the upper building are insulated.

According to the vibration-damping building of the present invention, the internal building is divided into the upper building and the lower building, and the heights of both are made sufficiently lower than the external building. High rigidity can be ensured compared to external buildings.

Further, a connecting structure is provided at the middle part in the height direction of the upper building, and the upper building and the external building are integrally connected at the height position of the connecting structure. Then, when an external force such as an earthquake motion acts, the upper building vibrates in a vibration mode different from that of the external building, using the height position where the connection structure is provided as a fulcrum. Therefore, there is a range where the difference in deformation becomes large between the upper building and the outer building.

Furthermore, since the lower building also vibrates in a vibration mode different from that of the external building, there is a range where the difference in deformation between the lower building and the external building is large. As a result, by placing damping members in areas where the difference in deformation between the lower building, the upper building, and the external building is large, it is possible to use damping materials in areas where the difference in deformation between the lower building, the upper building, and the external building is large. Even if the planar shape is small due to the constraints, it is possible to obtain the vibration damping effect by the connected vibration damping structure.

According to the present invention, in a vibration damping building in which an internal building is constructed inside an external building and these buildings are connected by a damping member, the rigidity of the internal building can be ensured without being restricted by the height or planar shape of the building. , it becomes possible to obtain a high vibration damping effect.

It is a diagram showing a vibration-damping building in an embodiment of the present invention. FIG. 3 is a diagram showing an example of a vertical load transmission mechanism interposed between an upper building and a lower building in an embodiment of the present invention. FIG. 2 is a diagram showing a connection structure connecting an upper structure and an external building in an embodiment of the present invention. FIG. 2 is a diagram showing a state in which an external force such as an earthquake motion is applied to a vibration-damping building according to an embodiment of the present invention. It is a figure showing the installation structure of the damping member in an embodiment of the present invention. It is a figure which shows the other example of the connection structure in embodiment of this invention. It is a figure which shows the other example of the connection structure in embodiment of this invention. It is a figure which shows the other example of the damping building in embodiment of this invention.

The vibration damping building of the present invention will be described in detail below with reference to FIGS. 1 to 8.

As shown in FIG. 1, the vibration damping building 10 includes an external building 20, an internal building 30, a void space 40, a vibration damper 50, a vertical load transmission mechanism 60, and a connection structure 70.

≪≪External building≫≫
The external building 20 is a high-rise building made of a rigid-frame frame having a rectangular shape in plan view and supported by a foundation structure 80 installed underground. In this structure, the dimensions of the columns 21 and beams 22 are smaller than those of a general rigid-frame frame, the span between the columns 21 is wide, and the number of columns 21 and beams 22 is small. Therefore, the external building 20 has lower rigidity than a general rigid frame. Such an external building 20 is provided with a roof frame 24 at the top thereof, and a void space 40 covered by this roof frame 24 is provided inside.

As shown in FIGS. 1 and 2, the void space 40 is a space extending in the vertical direction surrounded by the inner peripheral wall 25 of the external building 20, and is formed in a rectangular shape in plan view. It is used not only as a space for ventilation and exhaust using natural ventilation, and as a space for equipment such as a common outdoor unit, but also as a space for installing an internal building 30.

≪≪Internal building, lower building, upper building≫≫
As shown in FIG. 1, the internal building 30 is a reinforced concrete building supported by a foundation structure 80 installed underground, and is constructed independently of the external building 20. Further, the internal building 30 is divided in the height direction and includes a lower building 30A and an upper building 30B.

The lower building 30A is constructed to have a rectangular shape in plan view as shown in FIG. 2, and the outer peripheral wall 31A and the inner peripheral wall 25 of the external building 20 face each other with an interval D1. Moreover, a seismic wall is used for the outer peripheral wall 31A, and the lower building 30A is equipped with a lower continuous seismic wall.

On the other hand, the upper building 30B is similarly constructed in a rectangular shape in a plan view, as shown in FIG. A shear wall is used for the outer peripheral wall 31B, and the upper building 30B is provided with an upper continuous shear wall.

As shown in FIG. 1, a vertical load transmission mechanism 60 is interposed between the lower building 30A and upper building 30B having such a configuration. Therefore, the structure is such that at least a portion of the vertical load on the upper building 30B is transmitted to the lower building 30A via the vertical load transmission mechanism 60. Further, the upper building 30B is provided with a connection structure 70 at a height slightly above the lower end.

The connection structure 70 has the function of integrally connecting the upper building 30B and the external building 20, and the function of suppressing deformation of the upper building 30B by the outer peripheral pillars 23 of the external building 20. Any structure may be adopted as long as it has these functions, but in FIGS. 3(a) and 3(b), a belt truss 71 is used as an example.

As shown in FIG. 3A, the belt truss 71 extends in two directions from the outer peripheral wall 31B so as to form the same plane as the short side of the outer peripheral wall 31B of the upper building 30B having a rectangular shape in plan view. Four bodies are sticking out. Further, the belt truss 71 is installed on a plurality of floors, and FIG. 3(b) illustrates a case where the belt truss 71 is installed on three floors. The belt truss 71 arranged in this manner tightly connects the outer circumferential wall 31B of the upper building 30B and the outer circumferential column 23 of the external building 20, and suppresses deformation of the upper building 30B by the outer circumferential column 23 of the outer building 20.

In the internal building 30 having the above configuration, as shown in FIG. 1, the lower building 30A and the upper building 30B are constructed to be sufficiently lower in height than the external building 20. As described above, a lower continuous shear wall is formed in the lower building 30A, and an upper continuous shear wall is formed in the upper building 30B. Thereby, higher rigidity is ensured in both of them compared to the external building 20.

Therefore, the natural period of the lower building 30A and the upper building 30B is shorter than that of the external building 20. As a result, when an external force such as an earthquake motion is applied, the lower building 30A vibrates in a vibration mode different from that of the external building 20, with the height position near the foundation structure 80 serving as a fulcrum, as shown in FIG. Therefore, a range E1 in which the deformation difference becomes large is generated between the vicinity of the upper end of the lower building 30A and the external building 20.

Further, the upper building 30B vibrates in a vibration mode different from that of the external building 20, using the height position near the connection structure 70 as a fulcrum. This creates a range E2 in which the difference in deformation becomes large between the vicinity of the upper end of the upper building 30B and the external building 20. Therefore, the vibration damper 50 is provided in the height ranges E1 and E2 where this deformation difference becomes large.

≪≪Vibration damper, external foundation, internal foundation≫≫
The vibration damper 50 can be an oil damper, a friction damper, a viscous damper, a viscoelastic damper, a hysteretic damper, or a combination of these. In FIG. 5, a damping top is used as an example. There is.

The damping top is a cylindrical viscous damping device in which a viscous material is sealed between an outer cylinder and an inner cylinder. This device converts the axial deformation that occurs when an external force such as an earthquake is applied to high-speed rotational deformation of the inner cylinder via the rotary ball screw, and generates viscous damping force by the relative speed with the outer cylinder. .

The vibration damper 50 described above may be directly attached to both the outer peripheral walls 31A, 31B and the inner peripheral wall 25 of the external building 20 in the height ranges E1 and E2 where the difference in deformation between the lower building 30A and the upper building 30B becomes large. Alternatively, it may be configured to provide an installation foundation and attach it to this. The foundation for installing the vibration damper 50 will be explained by taking as an example the case where it is installed between the upper building 30B and the external building 20 shown in FIG. 5. The foundation includes an internal foundation 33B and an external foundation 26.

As shown in FIG. 5, the external foundation 26 has a rectangular shape in plan view in which a part of the slab 27 formed between the inner peripheral wall 25 and the pillar 21 of the external building 20 protrudes toward the void space 40 side. It is a convex portion and is provided near the center of each of the four inner peripheral walls 25. On the other hand, the internal foundation 33B is a convex portion protruding toward the void space 40, which is provided on the long side of the outer peripheral wall 31B of the upper building 30B, which is rectangular in plan view. These are provided near each of the four corners of the outer peripheral wall 31B.

The external foundation 26 and the outer peripheral wall 31B of the upper building 30B face each other with an interval D2 (<D1). Further, the internal foundation 33B and the inner peripheral wall 25 of the external building 20 face each other with an interval D3 (>D2, <D1). At this time, the distance D2 exceeds the amount of relative displacement in the horizontal direction between the external building 20 and the upper building 30B that would occur due to an earthquake or wind that is smaller than a maximum earthquake, but The amount of relative displacement in the horizontal direction with respect to the building 30B is set to be less than that.

The maximum amount S of the extension stroke amount and contraction stroke amount of the vibration damper 50 is set to a size that does not exceed this interval D2. A total of eight vibration dampers 50 are arranged approximately horizontally so as to extend in two directions from the four corners of the upper building 30B toward the external building 20 for each floor included in the height range E2 where the difference in deformation becomes large. The upper building 30B and the external building 20 are connected to each other.

Its mounting structure is such that, between the upper building 30B and the external building 20, one end of the vibration damper 50 is rotatably attached to the side surface of the external foundation 26 provided on the external building 20 via a hinge 51. . Further, the other end of the vibration damper 50 is rotatably attached via a hinge 51 to the side surface of an internal foundation 33B provided in the upper building 30B.

The vibration damper 50 installed between the lower building 30A and the external building 20 is similarly rotatably installed via a hinge 51 on the side surface of the external foundation 26, one end of which is provided in the external building 20. The other end is rotatably attached via a hinge 51 to the side surface of an internal foundation 33A provided in the lower building 30A. Further, similarly to the upper building 30B, the external foundation 26 and the outer peripheral wall 31A of the lower building 30A face each other with an interval D2 (<D1). Further, the internal foundation 33A and the inner circumferential wall 25 of the external building 20 face each other with an interval D3 (>D2, <D1).

In this embodiment, the vibration damper 50 is arranged in a plane, but it is installed so as to connect the positions of different heights of the upper building 30B and the external building 20 or the lower building 30A and the external building 20. You can also do that.

When the vibration-damping building 10 having the above configuration is subjected to an external force such as an earthquake, as shown in FIG. Vibration energy can be efficiently absorbed by the vibration damper 50 provided in the height range E1 where the difference in deformation becomes large. Similarly, even if the external building 20 moves relative to the upper building 30B in any direction in the horizontal direction, the vibration damper 50 installed in the height range E2 where the difference in deformation between the two becomes large increases the vibration efficiency. Can absorb energy.

As a result, even if the vibration-damping building 10 is a super-high-rise building that is taller than a skyscraper, or if the planar shape is small due to site area restrictions, it is possible to obtain a high vibration-damping effect by the connected vibration-damping structure. It becomes possible.

Furthermore, on the floor where the vibration control damper 50 is installed, as shown in FIG. The distance D2 from the outer peripheral wall 31B is set narrower than the maximum amount S of the contraction stroke amount or the extension stroke amount of the vibration damper 50. The same applies to the lower building 30A.

Thereby, when an extremely large earthquake occurs, the external foundation 26 of the external building 20 and the internal building 30 collide, and the contraction stroke amount or extension stroke amount of the vibration damper 50 can be suppressed to less than the maximum amount S. Therefore, the stroke length of the vibration damper 50 can be set as before, and the distance D1 between the external building 20 and the internal building 30 can also be set as before. Therefore, there will be no hindrance to the architectural plan, and no economic disadvantage will occur. Further, it is also possible to prevent an increase in cost due to an increase in the size of the vibration damper 50.

Moreover, as shown in FIG. 1, the external building 20 does not need to have high rigidity in order to ensure sufficient earthquake resistance. Therefore, it is possible not only to reduce the number of columns 21 and beams 22 compared to a normal rigid-frame structure, but also to reduce the diameter of each member. This makes it possible to make the living unit 28 open and improve the livability.

Furthermore, the interior of the lower building 30A and upper building 30B that constitute the internal building 30 can be used as a space for installing equipment without the need to provide many openings in the outer peripheral walls 31A, 31B. For example, the lower building 30A can have a multi-level parking machine 32 installed therein.

Although the multi-story parking machine 32 becomes a noise source, the lower building 30A has an outer peripheral wall 31A as an earthquake-resistant wall, and is provided independently from the external building 20. For this reason, it becomes possible to block vibrations and noise to the external building 20. Note that vehicles may enter and exit the multi-story parking machine 32 through, for example, an entrance provided on the ground floor of the external building 20.

It goes without saying that the vibration damping building and vibration damping structure of a building according to the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

≪≪Other examples of vibration damping buildings: Connection structure≫≫
For example, in FIG. 1, an example is given in which the connection structure 70 that connects the upper building 30B and the external building 20 is provided at one point slightly above the lower end of the upper building 30B, but the invention is not limited to this. do not have. As shown in FIG. 6, the connection structure 70 may be provided at two points in the middle of the upper building 30B in the height direction. Alternatively, as shown in FIG. 7, the connection structure 70 may be provided on a middle floor of the upper building 30B.

In other words, the connection structure 70 may be located in any position or in any quantity as long as it is in the middle part in the height direction excluding the upper and lower ends of the upper building 30B. As shown in FIG. 7, if the connection structure 70 is provided on the middle floor of the upper building 30B, it will be located not only near the upper floors of the upper building 30B but also near the lower floors at a height where the difference in deformation from the external building 20 is large. A range E3 may occur. In this case, the vibration damper 50 is also provided in this height range S3.

Moreover, although the case where the belt truss 71 is adopted as the connection structure 70 is illustrated, any structure may be used as long as the upper building 30B and the external building 20 can be connected integrally. For example, like the outer peripheral wall 31B of the upper building 30B, a shear wall made of reinforced concrete may be used.

Furthermore, as shown in FIG. 3(a), the belt truss 71 has a configuration in which four members project out in two directions in a plan view, but it may be provided in a radial manner so as to project out in four directions. Furthermore, the belt truss 71 may be installed on either a plurality of floors or a single floor.

≪≪Other examples of vibration damping buildings: Vertical load transmission mechanism≫≫
In FIG. 1, a vertical load transmission mechanism 60 is provided between the upper building 30B and the lower building 30A, and using this vertical load transmission mechanism 60, a part of the vertical load of the upper building 30B is supported by the lower building 30A. An example is given below. However, as shown in FIG. 8, the vertical load transmission mechanism 60 may be omitted and the upper building 30B may be supported by the external building 20 via the connection structure 70.

Further, in FIG. 1, a case where a linear motion rolling bearing 61 is employed as the vertical load transmission mechanism 60 is taken as an example. However, as long as the upper building 30B and the lower building 30A can be insulated and a portion of the vertical load on the upper building 30B can be transmitted, sliding bearings, laminated rubber, etc. may be used. Alternatively, a vibration damping device may be employed.

In addition, as shown in FIGS. 2 and 3(b), the linear motion rolling bearing 61 is installed on a pair of lower linear rails 611 installed on the roof 34 of the lower building 31 and on the floor slab 35 of the upper building 30B. and has a pair of upper linear rails 612 orthogonal to a pair of lower linear rails 611.

Furthermore, four linear blocks 613 are provided at the intersections of the lower linear rail 611 and the upper linear rail 612. As shown in FIG. 2, the four linear blocks 613 are configured to be movable along both the lower linear rail 611 and the upper linear rail 612, so that only the vertical load of the upper building 30B is transferred to the lower building. It can be transmitted to 31.

≪≪Other examples of vibration damping buildings: Working floor≫≫
Furthermore, regarding the connection structure 70 that integrally connects the upper building 30B and the external building 20, a working floor 72 may be provided at the lower end, for example, as shown in FIG. 7, to form a working space in the void space 40.

≪≪Other examples of vibration-damping buildings: Atrium≫≫
In addition, a roof frame 24 is provided at the upper end of the external building 20, as shown in FIG. 1, to ensure an atrium 41 above the upper building 30B. However, when the roof frame 24 is provided, its height position may be at any height as long as it is insulated from the upper building 30B. For example, as shown in FIG. 24 may be placed directly above the upper building 30B, and the atrium 41 may be omitted.

≪≪Other examples of vibration damping buildings: Lower building≫≫
Further, as shown in FIG. 1, the lower building 30A is supported by a foundation structure 80 provided underground and is constructed independently of the external building 20. However, as shown in FIG. 8, the beams 22 on the lower floors of the external building 20 and the beams 36 on the lower floors of the lower building 30A are constructed continuously, and the outer building 20 and the lower floors of the lower building 30A are It may also be a structurally connected unitary structure.

10 Vibration control building 20 External building 21 Column 22 Beam 23 Outer pillar 24 Roof frame 25 Inner wall 26 External foundation 27 Slab 28 Residential unit 30 Internal building 30A Lower building 30B Upper building 31A Outer wall 31B Outer wall 32 Multi-story parking machine 33A Internal foundation 33B Internal foundation 34 Roof 35 Floor slab 36 Beam 40 Void space 41 Atrium 50 Vibration damper 51 Hinge 60 Vertical load transmission mechanism 61 Direct rolling bearing 611 Lower linear rail 612 Upper linear rail 613 Linear block 70 Connection structure 71 Belt truss 72 Working floor 80 Basic structure

Claims (8)

Constructing an internal building with higher rigidity than the external building inside the external building, and providing a damping member in the gap provided between the internal building and the external building,
In a vibration-damping building that connects the internal building and the external building with the vibration-damping member,
The internal building is divided into a lower building and an upper building,
A connection structure that is integrally connected to the external building is provided in the middle part of the upper building in the height direction,
A vibration-damping building characterized in that the vibration-damping member is provided at least near the upper end of each of the lower building and the upper building. In the vibration damping building according to claim 1,
A vibration-damping building characterized in that a plurality of the connection structures are provided in a height direction. In the vibration damping building according to claim 1,
A vibration-damping building characterized in that a belt truss is used in the connection structure. In the vibration damping building according to claim 1,
A vibration-damping building characterized in that the vibration-damping member is provided near an upper end and near a lower end of the upper building. In the vibration damping building according to claim 1,
A vibration-damping building characterized in that a vertical load transmission mechanism is provided between the lower building and the upper building. In the vibration damping building according to claim 5,
A vibration-damping building characterized in that the vertical load transmission mechanism is a direct-acting rolling bearing. In the vibration damping building according to claim 1,
A vibration-damping building characterized in that the connection structure is provided with a work floor. In the vibration damping building according to claim 1,
The external building has a roof frame, and
A vibration-damping building characterized in that the roof frame and the upper building are insulated.