Vibration-resistant building

Abstract

To provide a damping building, in which an internal building is constructed inside an external building, these buildings being connected with each other with damping members, and which can secure rigidity of the internal building to gain a high damping effect without restriction caused by a height or a planar shape of the building.SOLUTION: A damping building is constituted by: constructing an internal building inside an external building provided with a base isolation layer, which features higher rigidity compared with the external building; arranging damping members in a gap made between the aforesaid internal building and the aforesaid external building; and connecting the internal building and the external building with the damping members. The aforesaid internal building is divided into a lower building and an upper building. A connection structure is arranged on the aforesaid upper building at a middle part in a height direction of the upper building to integrally connect to the aforesaid external building. The aforesaid damping members are arranged at least in the vicinity of a top end of each the aforesaid lower building and the aforesaid upper building.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a vibration control building including an external building and an internal building with high rigidity constructed inside the external building.

Background Art

[0002] Conventionally, a vibration control building is known in which a highly rigid internal building is constructed inside an external building having a frame structure, and these are connected by vibration control members. When a large horizontal force due to seismic force or wind load is input to this vibration control building, the vibration control members efficiently absorb vibration energy by utilizing the fact that the deformation modes of the external building and the internal building are different.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the above-described vibration control building can improve seismic resistance without increasing the rigidity of the external building, it is possible to secure freedom in the floor plan of the living space by omitting beams and columns of the external building. However, when attempting to adopt the vibration control building of Patent Document 1 for a super-high-rise building exceeding the height of a high-rise building or a building with a small planar shape, it is difficult to secure the rigidity of the internal building and obtain a satisfactory vibration control effect.

[0005] The present invention has been made in view of such problems, and its main object is to construct an internal building inside an external building and connect these by vibration control members, and to secure the rigidity of the internal building and obtain a high vibration control effect without being restricted by the height or planar shape of the building.

Means for Solving the Problems

[0006] To achieve this objective, the vibration-damping building of the present invention constructs an internal building with higher rigidity than the external building inside an external building on which a seismic isolation layer is provided, and provides a vibration-damping member in the gap between the internal building and the external building, and connects the internal building and the external building with the vibration-damping member, wherein the internal building is a lower building against Upper building Insulation Furthermore, a connecting structure is provided in the middle of the height direction of the upper building, which is integrally connected with the outer building, and the vibration damping members are provided at least near the upper ends of the lower building and the upper building.

[0007] The vibration-damping building of the present invention is characterized in that multiple connection structures are provided in the height direction.

[0008] The vibration-damping building of the present invention is characterized in that a belt truss is used in the connection structure.

[0009] The vibration-damping building of the present invention is characterized in that the vibration-damping members are provided near the upper end and near the lower end of the upper building.

[0010] 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.

[0011] The vibration-damping building of the present invention is characterized in that the vertical load transmission mechanism is a linear rolling bearing.

[0012] The vibration-damping building of the present invention is characterized in that a work platform is provided in the connecting structure.

[0013] The vibration-damping building of the present invention is characterized in that the external building has a roof frame, and the roof frame is insulated from the superstructure.

[0014] According to the vibration-damping building of the present invention, the interior building is divided into an upper building and a lower building, and the height of both is made sufficiently lower than that of the exterior building, so that high rigidity can be easily ensured for both the upper building and the lower building compared to the exterior building.

[0015] Furthermore, a connecting structure is provided in the middle of the upper building in the height direction, and the upper building and the outer building are integrally connected at the height of the connecting structure. When external forces such as seismic motion act on it, the upper building vibrates in a different vibration mode than the outer building, with the height of the connecting structure as the pivot point. Consequently, a range is created where the difference in deformation between the upper building and the outer building is large.

[0016] Furthermore, since the lower building vibrates in a different vibration mode than the outer building, there are areas where the deformation difference between it and the outer building becomes large. By placing damping members in these areas where the deformation difference between the lower building, the upper building, and the outer building becomes large, it becomes possible to obtain the damping effect of the linked damping structure even when the damped building is an ultra-high-rise building that is taller than a super high-rise building, or when the plan shape is small due to site area constraints. [Effects of the Invention]

[0017] According to the present invention, in a vibration-damping building in which an internal building is constructed inside an external building and these are connected by vibration-damping members, it is possible to ensure the rigidity of the internal building and obtain a high vibration-damping effect without being restricted by the height or plan shape of the building. [Brief explanation of the drawing]

[0018] [Figure 1] This figure shows a vibration-damping building according to an embodiment of the present invention. [Figure 2] This figure shows an example of a vertical load transmission mechanism interposed between an upper and lower building in an embodiment of the present invention. [Figure 3] This figure shows a connecting structure for connecting the superstructure and an external building in an embodiment of the present invention. [Figure 4] This figure shows the state in which an external force, such as seismic motion, acts on a vibration-damping building according to an embodiment of the present invention. [Figure 5] It is a diagram showing the installation structure of the vibration damping member in the embodiment of the present invention. [Figure 6] It is a diagram showing another example of the connection structure in the embodiment of the present invention. [Figure 7] It is a diagram showing another example of the connection structure in the embodiment of the present invention. [Figure 8] It is a diagram showing another example of the vibration damping building in the embodiment of the present invention.

Mode for Carrying Out the Invention

[0019] The vibration damping building of the present invention will be described in detail below with reference to FIGS. 1 to 8.

[0020] 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 damping damper 50, a vertical load transmission mechanism 60, and a connection structure 70.

[0021] ≪≪External Building≫≫ The external building 20 is a high-rise building composed of a ramen structure having a rectangular shape in plan view, and is supported by a foundation structure 80 via a seismic isolation layer 90. The seismic isolation layer 90 is provided only at the lower part of the external building 20, and a plurality of seismic isolation devices 91 are installed at intervals. The seismic isolation device 91 may adopt any of laminated rubber, sliding bearings, or a combination of laminated rubber and sliding bearings.

[0022] In addition, the ramen structure of the external building 20 is formed with smaller dimensions of columns 21 and beams 22 compared to a general structure. Further, 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 compared to a general ramen structure. Such an external building 20 is provided with a roof structure 24 at the top end, and a void space 40 covered by this roof structure 24 is provided inside.

[0023] As shown in Figures 1 and 2, the void space 40 is a vertically extending space surrounded by the inner perimeter wall 25 of the exterior building 20, and is formed in a rectangular shape in plan view. It is used not only as a space for ventilation and exhaust utilizing natural ventilation, and as a space for equipment such as common outdoor units, but also as a space for constructing the interior building 30.

[0024] <<<Interior building, lower building, upper building>>> As shown in Figure 1, the interior building 30 is a reinforced concrete building supported by a foundation structure 80 located underground, and is constructed independently of the exterior building 20. Furthermore, the interior building 30 is divided in the height direction and comprises a lower building 30A and an upper building 30B.

[0025] As shown in Figure 2, the lower building 30A is constructed in a rectangular shape in plan view, and the outer perimeter wall 31A and the inner perimeter wall 25 of the outer building 20 face each other with a gap D1 between them. Furthermore, a seismic wall is used in the outer perimeter wall 31A, and the lower building 30A is equipped with a lower continuous seismic wall.

[0026] Similarly, the upper building 30B is constructed in a rectangular shape in plan view, as shown in Figure 3(a), and the outer perimeter wall 31B and the inner perimeter wall 25 of the outer building 20 face each other with a gap D1 between them. The outer perimeter wall 31B is made of seismic-resistant wall, and the upper building 30B is equipped with an upper continuous seismic-resistant wall.

[0027] As shown in Figure 1, a vertical load transmission mechanism 60 is interposed between the lower building 30A and the upper building 30B in this configuration. Therefore, at least a portion of the vertical load from the upper building 30B is transmitted to the lower building 30A via the vertical load transmission mechanism 60. In addition, a connecting structure 70 is provided on the upper building 30B at a height slightly above its lower end.

[0028] The connecting structure 70 has the function of integrally connecting the upper building 30B and the outer building 20, and the function of suppressing the deformation of the upper building 30B with the outer perimeter columns 23 of the outer building 20. Any structure can be adopted as long as it has these functions, but Figures 3(a) and (b) show an example in which a belt truss 71 is used.

[0029] As shown in Figure 3(a), the belt truss 71 extends in two directions from the outer wall 31B of the upper building 30B, which has a rectangular shape in plan view, with four trusses protruding from the outer wall 31B. The belt truss 71 is installed on multiple floors, and Figure 3(b) illustrates an example where it is installed on three floors. The belt truss 71, arranged in this way, tightly connects the outer wall 31B of the upper building 30B to the outer columns 23 of the outer building 20, and the deformation of the upper building 30B is suppressed by the outer columns 23 of the outer building 20.

[0030] As shown in Figure 1, the interior building 30, having the above configuration, is constructed with a lower building 30A and an upper building 30B that are significantly lower in height than the exterior building 20. Furthermore, as previously mentioned, a lower continuous seismic wall is formed in the lower building 30A, and an upper continuous seismic wall is formed in the upper building 30B. As a result, both buildings have higher rigidity compared to the exterior building 20.

[0031] Therefore, the natural periods of the lower building 30A and the upper building 30B are shorter than those of the outer building 20. As a result, when external forces such as seismic motion act on the lower building 30A, as shown in Figure 4, the lower building 30A vibrates in a different vibration mode than the outer building 20, with the height near the foundation structure 80 as the pivot point. This creates a range E1 where the deformation difference is large between the upper end of the lower building 30A and the outer building 20.

[0032] Furthermore, the upper building 30B vibrates in a different vibration mode than the outer building 20, with a pivot point at a height near the connecting structure 70. This creates a range E2 where the deformation difference is large between the upper end of the upper building 30B and the outer building 20. Therefore, vibration damping dampers 50 are provided in the height ranges E1 and E2 where this deformation difference is large.

[0033] <<<Vibration damping dampers, external foundation, internal foundation>>> The vibration damping damper 50 can be an oil damper, friction damper, viscous damper, viscoelastic damper, hysteretic damper, or a combination thereof. Figure 5 shows an example where a damping choke is used.

[0034] A damping spool is a cylindrical viscous damping device in which a viscous material is sealed between an outer cylinder and an inner cylinder. This device converts axial deformation caused by external forces such as seismic motion into high-speed rotational deformation of the inner cylinder via a rotary ball screw, generating a viscous damping force based on the relative velocity with the outer cylinder.

[0035] The above-mentioned vibration damping damper 50 may be directly attached to both the outer walls 31A and 31B and the inner outer wall 25 of the outer building 20 in height ranges E1 and E2 where the difference in deformation between the lower building 30A and the upper building 30B is large, or it may be configured to be attached to an installation foundation. Regarding the installation foundation for the vibration damping damper 50, as shown in Figure 5, when it is installed between the upper building 30B and the outer building 20, it is provided with an internal foundation 33B and an external foundation 26.

[0036] As shown in Figure 5, the external foundation 26 is a rectangular protrusion in plan view, formed by a portion of the slab 27 between the inner perimeter wall 25 and the column 21 of the external building 20, projecting toward the void space 40. These are provided near the center of each of the four inner perimeter walls 25. On the other hand, the internal foundation 33B is a protrusion projecting toward the void space 40, provided on the long side of the outer perimeter wall 31B of the upper building 30B, which has a rectangular shape in plan view. These are provided near each of the four corners of the outer perimeter wall 31B.

[0037] The external foundation 26 and the outer peripheral wall 31B of the upper building 30B face each other with an interval D2 (< D1). Also, 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 interval D2 is set to exceed the horizontal relative displacement amount between the external building 20 and the upper building 30B caused by normally assumed earthquakes and winds that are smaller than the extremely large earthquake, but to be less than the horizontal relative displacement amount between the external building 20 and the upper building 30B caused by the extremely large earthquake.

[0038] The maximum amount S of the extension stroke amount and the contraction stroke amount of the vibration damper 50 is set to a size that does not exceed this interval D2. The vibration damper 50 extends 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 deformation difference becomes large, and a total of eight units are arranged substantially horizontally to connect the upper building 30B and the external building 20.

[0039] The mounting structure is such that one end of the vibration damper 50 is rotatably attached via a hinge 51 to the side surface of the external foundation 26 provided on the external building 20 between the upper building 30B and the external building 20. Also, the other end of the vibration damper 50 is rotatably attached via a hinge 51 to the side surface of the internal foundation 33B provided on the upper building 30B.

[0040] The vibration damper 50 attached between the lower building 30A and the external building 20 is similarly rotatably attached via a hinge 51 to the side surface of the external foundation 26 provided on the external building 20 at one end. The other end is rotatably attached via a hinge 51 to the side surface of the internal foundation 33A provided on the lower building 30A. Also, similar 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). Also, the internal foundation 33A and the inner peripheral wall 25 of the external building 20 face each other with an interval D3 (> D2, < D1).

[0041] In this embodiment, the vibration damping dampers 50 are arranged in a planar manner, but they can also be installed to connect the upper building 30B and the outer building 20, or the lower building 30A and the outer building 20, at different heights.

[0042] In the vibration-damping building 10 having the above configuration, as shown in Figure 4, when an external force such as an earthquake acts, vibration energy can be efficiently absorbed by vibration dampers 50 installed in a height range E1 where the difference in deformation between the two is large, regardless of the direction in which the outer building 20 moves relative to the lower building 30A in the horizontal direction. Similarly, vibration energy can be efficiently absorbed by vibration dampers 50 installed in a height range E2 where the difference in deformation between the two is large, regardless of the direction in which the outer building 20 moves relative to the upper building 30B in the horizontal direction.

[0043] This makes it possible to obtain a high vibration damping effect through the linked vibration damping structure even when the vibration-damping building 10 is an ultra-high-rise building that is taller than a super high-rise building, or when the plan shape is small due to site area constraints.

[0044] In this configuration, the exterior building 20 is supported by the foundation structure 80 via the seismic isolation layer 90, and the limit of horizontal deformation of the seismic isolation device 52 is set to be greater than the distance D2 between the exterior foundation 26 and the outer walls 31A and 31B. Therefore, compared to the case where the seismic isolation layer 90 is not provided, the relative horizontal displacement between the exterior building 20 and the interior building 30 is larger overall from the lower floors to the upper floors.

[0045] However, in the event of a maximum earthquake, the external foundation 26 of the external building 20 and the internal building 30 can collide, thereby limiting the contraction stroke or extension stroke of the vibration damping damper 50 to less than the maximum amount S. Therefore, the stroke length of the vibration damping damper 50 can be set in the same way as before, and the distance D1 between the external building 20 and the internal building 30 can also be set in the same way as before. As a result, there are no obstacles to the building plan, and there are no economic disadvantages. Furthermore, it is possible to prevent cost increases due to the enlargement of the vibration damping damper 50.

[0046] Furthermore, as shown in Figure 1, the external building 20 does not need to have high rigidity to ensure sufficient earthquake resistance. Therefore, not only can the number of columns 21 and beams 22 be reduced compared to a normal rigid frame structure, but the diameter of each member can also be made smaller. This makes the living unit 28 more open and improves livability.

[0047] Furthermore, the interiors of the lower building 30A and the upper building 30B that constitute the interior building 30 can be used as spaces for installing equipment that does not require numerous openings in the outer walls 31A and 31B. For example, the lower building 30A can be used to install a multi-story parking system 32.

[0048] Although the multi-story parking system 32 is a source of noise, the lower building 30A has its outer perimeter wall 31A as an earthquake-resistant wall and is also constructed independently of the external building 20. Therefore, it is possible to block vibrations and noise from reaching the external building 20. Vehicles can enter and exit the multi-story parking system 32, for example, through an entrance / exit provided on the ground floor of the external building 20.

[0049] The vibration-damping building and vibration-damping structure of the present invention are not limited to the embodiments described above, and it goes without saying that various modifications are possible without departing from the spirit of the present invention.

[0050] <<<Other examples of vibration-damping buildings: connection structure>>> For example, Figure 1 shows an example where the connecting structure 70 that integrally connects the upper building 30B and the outer building 20 is provided at one point slightly above the lower end of the upper building 30B, but it is not limited to this. As shown in Figure 6, the connecting structure 70 may be provided at two points in the middle of the height direction of the upper building 30B. Alternatively, as shown in Figure 7, the connecting structure 70 may be provided on the middle floor of the upper building 30B.

[0051] In other words, the position and number of the connecting structure 70 can be any, as long as it is in the middle part of the height direction, excluding the upper and lower ends of the superstructure building 30B. As shown in Figure 7, if the connecting structure 70 is installed on the middle floors of the superstructure building 30B, a height range E3 in which the difference in deformation with the external building 20 becomes large may occur not only near the upper floors of the superstructure building 30B but also near the lower floors. In this case, a vibration damping damper 50 is also installed in this height range S3.

[0052] Furthermore, although the example given shows the use of a belt truss 71 in the connection structure 70, any structure is acceptable as long as the upper building 30B and the outer building 20 can be connected as a single unit. For example, a reinforced concrete seismic wall could be used, similar to the outer wall 31B of the upper building 30B.

[0053] Furthermore, although the belt truss 71 is configured to extend in two directions with four sections in a plan view, as shown in Figure 3(a), it may also be arranged radially with sections extending in four directions. Additionally, the belt truss 71 may be installed on multiple or single floors.

[0054] <<<Other examples of vibration-damping buildings: Vertical load transmission mechanism>>> Figure 1 illustrates a case in which a vertical load transmission mechanism 60 is provided between the upper building 30B and the lower building 30A, and a portion of the vertical load of the upper building 30B is supported by the lower building 30A using this vertical load transmission mechanism 60. However, as shown in Figure 8, the vertical load transmission mechanism 60 may be omitted, and the upper building 30B may be supported by the external building 20 via a connecting structure 70.

[0055] Furthermore, Figure 1 shows an example where a linear rolling bearing 61 is used as the vertical load transmission mechanism 60. However, if the upper building 30B and the lower building 30A are insulated and a portion of the vertical load in the upper building 30B can be transmitted, then sliding bearings or laminated rubber bearings may be used. Alternatively, a vibration damping device may be used.

[0056] As shown in Figures 2 and 3(b), the linear rolling bearing 61 has a pair of lower linear rails 611 installed on the roof 34 of the lower building 31, and a pair of upper linear rails 612 installed on the floor slab 35 of the upper building 30B, which are perpendicular to the pair of lower linear rails 611.

[0057] Furthermore, it has four linear blocks 613 interposed at the intersection of the lower linear rail 611 and the upper linear rail 612. As shown in Figure 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 can be transmitted to the lower building 31.

[0058] <<<Other examples of vibration-damping buildings: work floors>>> Furthermore, regarding the connecting structure 70 that integrally connects the upper building 30B and the outer building 20, for example, a work platform 72 may be provided at the lower end, as shown in Figure 7, to form a work space in the void space 40.

[0059] <<<Other examples of vibration-damping buildings: Atriums>>> In addition, a roof frame 24 is provided at the upper end of the exterior building 20, as shown in Figure 1, and an atrium 41 is secured above the upper building 30B. However, when providing the roof frame 24, its height position can be any as long as it is insulated from the upper building 30B. For example, as shown in Figure 8, the roof frame 24 may be provided within the void space 40, positioned directly above the upper building 30B, and the atrium 41 may be omitted. [Explanation of symbols]

[0060] 10. Seismic-resistant buildings 20 Exterior Buildings 21 pillars 22 Beam 23 Perimeter columns 24 Roof frame 25 Inner wall 26 External Foundation 27 Slab 28 residential units 30 Interior Buildings 30A Lower building 30B Upper building 31A Outer wall 31B Outer wall 32 Multi-story parking garages 33A Internal foundation 33B Internal foundation 34. Roof section 35 Floor slab 36 Beam 40 Void Space 41 Atrium 50 Vibration damping damper 51 Hinge 60 Vertical load transmission mechanism 61 Linear rolling bearing 611 Lower linear rail 612 Upper linear rail 613 Linear Block 70 Connection Structure 71 Belt Truss 72 Work platform 80 Basic structure 90 Seismic isolation layer 91 Seismic isolation device

Claims

1. An internal building with greater rigidity than the external building is constructed inside the external building which has a seismic isolation layer, and a vibration damping member is installed in the gap 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 aforementioned interior building is insulated from the lower building by the upper building. A connecting structure is provided at the midpoint of the upper building in the height direction, which is integrally connected to the outer building. A vibration-damping building characterized in that the vibration-damping member is provided at least near the upper end of the lower building and the upper building.

2. In the vibration-damping building described in claim 1, A vibration-damping building characterized in that multiple such connection structures are provided in the height direction.

3. In the vibration-damping building described in claim 1, A vibration-damping building characterized in that a belt truss is used in the aforementioned connection structure.

4. In the vibration-damping building described in claim 1, A vibration-damping building characterized in that the vibration-damping members are provided near the upper end and near the lower end of the upper building.

5. In the vibration-damping building described in claim 1, A vibration-damping building characterized in that a vertical load transmission mechanism is provided between the lower building and the upper building.

6. In the vibration-damping building described in claim 5, A vibration-damping building characterized in that the vertical load transmission mechanism is a linear rolling bearing.

7. In the vibration-damping building described in claim 1, A vibration-damping building characterized in that a work platform is provided in the aforementioned connection structure.

8. In the vibration-damping building described in claim 1, The aforementioned external building has a roof structure, A vibration-damping building characterized in that the roof structure and the superstructure are insulated from each other.

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