JP7456128B2 - Structure - Google Patents

Description

The present invention relates to structures.

BACKGROUND ART Structures such as buildings are known in which a vertically extending atrium space is provided over multiple floors. In such structures, the structural strength of the structure that forms the atrium space is reduced, so for example, the rigidity of the building can be increased by making the walls in the structure that form the atrium space a continuous shear wall. There is. In this case, the interstory displacement that occurs between floors with increased rigidity is small, so even if damping members (such as dampers) that absorb vibration energy are provided on each floor, it is difficult to obtain the damping effect of the damping members. .

Therefore, for example, in the structure described in Patent Document 1, a rigid part is provided which is supported by the frame below the lowest floor and which vertically penetrates a highly rigid part (highly rigid structure part) of the above structure part. , the vibration damping effect is enhanced by connecting the high-rigidity structure part and the rigid body part with a damper.

JP2019-85786A

However, in the case of the above-mentioned structure, a member with extremely high rigidity is required as the rigid body portion. For this reason, for example, it has been difficult to reduce the size (thickness, etc.) of the rigid body portion.

The present invention has been made in view of such problems, and its purpose is to provide a structure with high vibration damping performance while reducing the necessary rigidity of the rigid body portion.

The main invention for achieving the above object includes: a low-rigidity structure that forms a void space over multiple floors and has lower rigidity than a predetermined floor that does not have the void space; a rigid composite story connected to the predetermined floor, the rigid composite story having a high rigidity structure having higher rigidity than the predetermined floor; and a rigid composite story having higher rigidity than the predetermined floor; a rigid body part that is supported in a manner that is not relatively displaceable by the frame of an intermediate floor consisting of the first floor between the top floor and the bottom floor, and that extends vertically through the inside of the high rigidity structure part and has higher rigidity than the high rigidity structure part; , the high-rigidity structure part and the rigid body part are connected at a floor below and above the intermediate floor , and the high-rigidity structure part and the rigid body part are relatively displaced at the floor below and above the intermediate floor. This structure is characterized by having a vibration damping member that damps vibrations by doing so.

Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to the present invention, it is possible to provide a structure with high vibration damping performance while achieving a necessary reduction in rigidity.

FIG. 1A is a sectional view conceptually showing a cross section along the left-right direction of a structure (high-rise building 1) according to the present invention. FIG. 1B is a sectional view taken along line AA in FIG. 1A. FIG. 2A is an enlarged view of the vicinity of the rigid body part 4 in FIG. 1A. FIG. 2B is an enlarged view of the vicinity of the rigid body part 4 in FIG. 1B. FIG. 2 is a horizontal sectional view of the above-floor portion of the first floor of the high-rise building 1. FIG. FIG. 2 is a horizontal cross-sectional view of the floor portion of the second floor of the high-rise building 1. FIG. 1 is a horizontal cross-sectional view of a third floor portion of a high-rise building 1. FIG. FIG. 2 is a horizontal sectional view of the floor portion of the fourth floor of the high-rise building 1. FIG. FIG. 2 is a horizontal cross-sectional view of the floor portion of the fifth floor of the high-rise building 1. FIG. FIG. 2 is a horizontal cross-sectional view of the floor portion of the sixth floor of high-rise building 1. FIG. FIG. 2 is a horizontal sectional view of the floor portion of the seventh floor of the high-rise building 1. FIG. 2 is a horizontal sectional view of the underfloor portion of the 8th floor of high-rise building 1. FIG. It is a schematic moment diagram of this embodiment. It is a schematic moment diagram of a 1st comparative example. FIG. 6 is a schematic moment diagram of a second comparative example.

From the description of this specification and the attached drawings, at least the following matters will become clear.

A low-rigidity structure that forms a void space over multiple floors and has lower rigidity than a predetermined floor that does not have the void space, and a high-rigidity structure that is connected to the low-rigidity structure on the multiple floors and has higher rigidity than the predetermined floor. and a rigid composite floor having higher rigidity than the predetermined floor, the structure is connected to the predetermined floor, and the rigid composite floor is connected to the predetermined floor. a rigid body part supported by the frame of the intermediate floor and penetrating through the high rigidity structure in the vertical direction and having a higher rigidity than the high rigidity structure; and a rigid body part that connects the high rigidity structure part and the rigid body part; A structure characterized by having a vibration damping member that damps vibration by relative displacement between a structure portion and the rigid body portion is revealed.

According to such a structure, the relative displacement between the rigid body part and the high-rigidity structure part increases as the vertical distance increases from the support part (intermediate floor). Thereby, the vibration damping performance of the vibration damping member can be improved. Further, the required rigidity of the rigid body part is smaller than that in the case where the rigid body part is supported at the end thereof. Therefore, vibration damping performance can be improved while reducing the rigidity required for the rigid body portion.

In such a structure, it is preferable that the vibration damping members are provided above and below the intermediate floor, respectively.

According to such a structure, it is possible to provide higher vibration damping performance.

In this structure, the inside of the high-rigidity structure has a space formed in a front-rear direction and a left-right direction perpendicular to the up-down direction, and the vibration damping member is connected to the high-rigidity structure and the rigid body. It is desirable that there be provided a device that connects the high-rigidity structure portion and the rigid body portion in the front-rear direction, and a device that connects the high-rigidity structure portion and the rigid body portion in the left-right direction.

Such a structure can support vibration damping in all directions (horizontal direction).

In this structure, the inside of the high-rigidity structure has a space formed in a front-rear direction and a left-right direction perpendicular to the up-down direction, and the rigid body part has a front-rear extension part extending in the front-rear direction. and a left-right extending portion extending in the left-right direction.

According to such a structure, out-of-plane deformation of the rigid body portion can be suppressed.

In such a structure, it is desirable that the section modulus of the rigid section at at least one end in the vertical direction be smaller than the section modulus of the rigid section at the intermediate floor.

According to such a structure, it is possible to further reduce the size.

===Embodiment===
EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the structure according to the present invention will be described in detail using the drawings.

Figure 1A is a conceptual cross-sectional view of a structure (high-rise building 1) according to the present invention taken along the left-right direction, and Figure 1B is a cross-sectional view taken along the line A-A in Figure 1A. Figure 2A is an enlarged view of the area around rigid body 4 in Figure 1A, and Figure 2B is an enlarged view of the area around rigid body 4 in Figure 1B. Figures 3 to 10 are horizontal cross-sectional views of each floor of high-rise building 1. Figure 3 shows a horizontal cross-section of the upper floor portion on the first floor, Figures 4 to 9 show horizontal cross-sections of the floor portions on the second to seventh floors, respectively, and Figure 10 shows a horizontal cross-section of the lower floor portion on the eighth floor.

In this embodiment, the direction along the vertical direction is referred to as the up-down direction, the upper side in the vertical direction is referred to as "upper", and the lower side in the vertical direction is referred to as "lower". Further, among the directions (horizontal direction) orthogonal to the vertical direction, the direction that corresponds to the depth of the high-rise building 1 is defined as the front-back direction, and the near (front) side is defined as the "front" and the opposite side is defined as the "rear". Further, the direction perpendicular to the up-down direction and the front-back direction is defined as the left-right direction, and when the high-rise building 1 is viewed from the front, the right side (the side with the void space S1) is defined as the "right", and the opposite side is defined as the "left".

As shown in FIG. 1, the structure of this embodiment is a high-rise building 1 having void spaces S1, which are open spaces, from the first floor (1FL) to the seventh floor (7FL) above the ground.

As shown in FIGS. 3 to 10, in the high-rise building 1 of this embodiment, six columns 2 are provided at intervals in the left-right direction, and two rows of columns 2 are installed at intervals in the front-rear direction. Between the two columns 2 located on the far left and fourth from the left, one column (hereinafter referred to as the center column) 2a is provided at the center position in the front-rear direction. .

In the following description, the pillars other than the central pillar 2a will be referred to as a first pillar 2, a second pillar 2, a third pillar 2, . . . a sixth pillar 2 from the left.

Beams 3 connecting columns 2 adjacent in the left-right direction and columns 2 facing each other in the front-rear direction at each floor are spanned and connected to the parts of each column 2 constituting the 8th floor or higher. .

On the other hand, on the floors from the first floor to the seventh floor of the high-rise building 1, there is no beam connecting the fifth column 2 in the front-back direction, and an atrium space extending vertically to the right from the fourth column 2 ( A void space (hereinafter referred to as void space S1) is formed. The structural part composed of the beams 3 and columns 2 surrounding the void space S1 has fewer beams 3 than the floors above the 8th floor, so it This also constitutes a structure portion 1a with low rigidity (hereinafter referred to as a low-rigidity structure portion). Therefore, in the high-rise building 1, a load-bearing wall (not shown) is installed in the structure connected to the low-rigidity structure 1a, more specifically, in the structure on the left side from the fourth pillar 2 on the first to seventh floors. etc., and the rigidity is higher than that of a predetermined floor such as the 8th floor. The structure whose rigidity is increased by being connected to the low-rigidity structure 1a in this way is hereinafter referred to as the high-rigidity structure 1b. Here, the floors from the first floor to the seventh floor, in which the low-rigidity structure part 1a and the high-rigidity structure part 1b are connected in the left-right direction, correspond to a rigid composite story 1c having higher rigidity than a predetermined floor.

A rigid body portion 4 is provided within the highly rigid structure portion 1b of the rigid composite floor 1c. More specifically, the high-rigidity structure part 1b has a space S2 formed in the vertical direction, the front-back direction, and the left-right direction, and the rigid body part 4 is provided in the space S2. 4 is provided vertically penetrating inside the high-rigidity structure portion 1b on multiple floors (specifically, from the first floor to the seventh floor, which is approximately on the same level as the ground 5). Moreover, the rigid body part 4 is provided without contacting the slab (not shown) forming the first floor and the slab (not shown) forming the eighth floor.

The rigid body part 4 is a highly rigid member such as an SRC structure, and is formed, for example, by pouring concrete into a framework in which a plurality of H-shaped steels (not shown) are connected in a ladder shape or the like. The rigidity of the rigid body part 4 is higher than that of the high-rigidity structure part 1b, and is less likely to deform even if an earthquake or the like occurs, compared to the high-rigidity structure part 1b. The rigid body part 4 of this embodiment has a core part 4a, left and right extending parts 4b, and front and rear extending parts 4c.

The core portion 4a is a panel-shaped portion that constitutes the main body of the rigid body portion 4, is elongated in the vertical direction, and is arranged from the first floor to the seventh floor. Further, the core portion 4a is arranged such that the panel-shaped surface is perpendicular to the front-rear direction. Further, as shown in FIG. 2A, the core portion 4a of this embodiment has a length in the left-right direction as it goes toward the ends in the vertical direction (upper end, lower end) on the first and second floors, and on the sixth and seventh floors. It is formed in an oblique shape so that the length becomes shorter.

The left and right extending portions 4b extend from the core portion 4a to the right and left sides in the left and right direction, respectively, on the fourth floor. The tips (right end and left end) of each left and right extending portion 4b are respectively connected to the central column 2a of the high rigidity structure portion 1b. Further, the left and right extending portions 4b of this embodiment are formed in an oblique shape such that the length in the up and down direction becomes shorter (lower in height) toward the ends in the left and right direction.

The front-back extending portion 4c extends in the front-back direction at the left end portion of the core portion 4a. More specifically, as shown in FIG. 2B, the front-rear extending portion 4c extends to the rear side of the core portion 4a on the first and second floors, and extends to the rear side of the core portion 4a on the third to fifth floors. It extends to both the front side of the core part 4a on the 6th and 7th floors. The tips of the front and rear extending portions 4c are connected to the fourth floor beam 3 of the high-rigidity structure portion 1b. Further, the front-rear extending portion 4c is formed in an oblique shape such that the length in the front-rear direction becomes shorter toward the end of the rigid body portion 4 in the up-down direction on the first floor and the seventh floor.

In this way, the rigid body part 4 is connected to the beam 3 or central column 2a that supports the floor (slab) on the fourth floor. That is, the rigid body part 4 is supported by the frame of the fourth floor, which is an intermediate floor between the top floor (seventh floor) and the bottom floor (first floor) in the rigid composite story 1c of the high-rise building 1. Moreover, the rigid body part 4 is formed in such a shape that the horizontal cross section becomes smaller toward the end in the vertical direction. That is, in the rigid body portion 4, the section modulus of the ends in the vertical direction is smaller than the section modulus of the supporting portion.

In addition, except for the fourth floor where the rigid body portion 4 is supported, the width of the rigid body portion 4 in the left-right and front-to-back directions at each position in the vertical direction is narrower than the width of the space S2. In other words, there is a gap S between each end of the rigid body portion 4 in the left-right and front-to-back directions and the high-rigidity structural portion 1b (beam 3, etc.).

The gap S is set to a width that will not cause a collision in the event of an earthquake, which is assumed in the design. The rigid body part 4 functions as a structural member that bears the seismic force generated in the high-rise building 1 in a state where the high rigidity structure part 1b is in contact with the rigid body part 4 after the high rigidity structure part 1b collides with the rigid body part 4. do. Furthermore, the gap S is set to a width that will not damage the oil damper 10 (described later) even if the highly rigid structure portion 1b collides with the rigid body portion 4.

Note that a shock absorbing material (not shown) may be provided between the rigid body part 4 and the highly rigid structure part 1b to reduce the impact. Here, the cushioning material may be provided on the rigid body part 4 side, or may be provided on the highly rigid structure part 1b side. This makes it possible to reduce the impact caused by a collision.

Moreover, a plurality of oil dampers 10 are provided between the rigid body part 4 and the highly rigid structure part 1b (beam 3). The oil damper 10 is a device (vibration damping member) that absorbs vibration energy using the viscosity of oil. The plurality of oil dampers 10 damp the vibration according to the relative displacement between the rigid body part 4 and the highly rigid structure part 1b.

The oil dampers 10 are provided below (1st to 3rd floors) and above (6th to 8th floors) the floor supporting the rigid body part 4 (4th floor) in the highly rigid structure part 1b. There is. Thereby, vibration damping performance can be further improved. Further, in this embodiment, the oil damper 10 is provided with one that connects the rigid body part 4 and the high rigidity structure part 1b in the front-back direction, and one that connects the rigid body part 4 and the high rigidity structure part 1b in the left-right direction. It is being This makes it possible to cope with damping in all directions (horizontal direction).

In locations where the oil damper 10 cannot be directly connected between the rigid body part 4 and the beam 3, a rigid body part protrusion 8 is provided on the rigid body part 4, or a beam protrusion part 9 is provided on the beam 3. An oil damper 10 is connected via (rigid part protrusion 8, beam protrusion 9).

For example, on the first floor (see FIGS. 2A, 2B, and 3), beam protrusions 9 that protrude upward from the beams 3 are provided on the right side and rear side of the rigid body part 4, respectively. An oil damper 10 is provided between the rear beam protruding portion 9 and the front-rear extending portion 4c (rigid portion 4). In other words, the oil damper 10 connects the rigid body portion 4 and the highly rigid structure portion 1b (beam 3) in the front-rear direction.

Further, an oil damper 10 is provided between the right beam protrusion 9 and the core portion 4a (rigid body portion 4). In other words, the oil damper 10 connects the rigid body part 4 and the highly rigid structure part 1b (beam 3) in the left-right direction.

On the second floor (see Figures 2A, 2B, and 4), a beam protrusion 9 that protrudes forward is provided on the right side of the front end of the beam 3 that extends forward from the second rear column 2. As shown in Figure 4, the rigid part 4 has a rigid part protrusion 8 that faces the beam protrusion 9 in the front-to-rear direction at the inner corner of the L-shaped cross section. An oil damper 10 is provided between this rigid part protrusion 8 and the beam protrusion 9. In other words, the oil damper 10 connects the rigid part 4 and the high-rigidity structural part 1b in the front-to-rear direction.

Further, an oil damper 10 is provided directly between the right end of the core portion 4a (rigid body portion 4) and the left end of the beam 3 extending leftward from the central column 2a. In other words, the oil damper 10 connects the rigid portion 4 and the highly rigid structure portion 1b in the left-right direction.

The same applies to other floors, so the explanation will be omitted. Note that on the fourth floor, the rigid body part 4 is connected to the high-rigidity structure part 1b in the front-rear direction and the left-right direction (supported by the frame of the fourth floor), so the oil damper 10 is not provided (Fig. 6 reference). Furthermore, there are fewer oil dampers 10 on the upper and lower floors. For example, on the third floor, the oil damper 10 is provided only in the front-rear direction (see FIG. 5), and on the fifth floor, the oil damper 10 is not provided (see FIG. 7). This is because the relative displacement between the rigid body part 4 and the highly rigid structure part 1b is small near the support part, so even if the oil damper 10 is provided, it is difficult to obtain a damping effect. However, the present invention is not limited to this, and oil dampers 10 may be provided in two directions on the third and fifth floors as well.

On floors 8 and above of high-rise buildings 1, oil is installed inside a rectangular frame formed by columns 2 arranged at intervals in the horizontal direction and beams 3 arranged at intervals in the vertical direction. A damper 10 is provided. Inside the rectangular frame, a pair of braces 11 (hereinafter referred to as Y-shaped braces 11) are provided at or near the upper corners of the rectangular frame, each having one end fixed and arranged in a V-shape. It is being The oil damper 10 is arranged horizontally by connecting the lower end of the Y-shaped brace 11 and the lower part of the left or right pillar 2.

On floors 8 and above, the oil damper 10 provided between the Y-shaped brace 11 and the pillar 2 is the same as the oil damper 10 provided between the rigid body part 4 and the beam 3 in the rigid composite floor 1c. The same number is provided on each floor. In this embodiment, an example will be described in which two stations are provided on each floor.

In the high-rise building 1 of this embodiment, on the first to seventh floors (rigid composite story 1c), a high-rigidity structure part 1b whose rigidity is increased by installing load-bearing walls, etc. is a low-rigidity structure part that forms a void space S1. It is connected to 1a. For example, assume that the rigidity of the high-rigidity structure portion 1b is designed to be 1.5 times higher than that of the 8th floor, which is a predetermined floor. At this time, when seismic motion is input to the high-rise building 1, the amount of inter-story displacement on each floor in the high-rigidity structure 1b from the first floor to the seventh floor is 1.5 times smaller than the amount of inter-story displacement on the eighth floor. Therefore, if the oil damper 10 is provided between the Y-shaped brace 11 and the pillar 2 in the high-rigidity structure part 1b as well, as in the case of floors 8 and above, the oil damper in the high-rigidity structure part 1b The damping performance of 10 is lower than that of floors 8 and above.

More specifically, if the damping force per unit displacement of each oil damper 10 due to the interstory displacement x on the 8th floor is F, then the predetermined floor damping force Ga due to the two oil dampers 10 on the 8th floor is: It is expressed by Equation 1.

Ga = 2 x x F (Equation 1)
If a Y-shaped brace 11 is provided in the high-rigidity structural part 1b and an oil damper 10 is provided between the Y-shaped brace 11 and the column 2, the damping force Gb due to the two oil dampers 10 on each floor of the high-rigidity structural part 1b is expressed by Equation 2, since the amount of story displacement on each floor of the high-rigidity structural part 1b is x/1.5.

Gb=2×(x/1.5)×F (Formula 2)
In this way, when the oil damper 10 is provided between the Y-shaped brace 11 and the pillar 2 in the high-rigidity structure part 1b as in the case of floors 8 and above, the high-rigidity structure connected to the low-rigidity structure part 1a The damping performance in the section 1b is lower than the damping performance on the predetermined floor.

In contrast, in the high-rise building 1 of this embodiment, the rigid body part 4 is provided in the space S2 within the highly rigid structure part 1b, and the oil damper 10 is installed between the frame of each floor (beam 3, etc.) and the rigid body part 4. It is set up. That is, the oil damper 10 provided in the high-rigidity structure 1b generates a damping force (controlling force) due to the relative displacement between the rigid body part 4 and the high-rigidity structure 1b, rather than the interstory displacement of each floor of the high-rigidity structure 1b. It is set up so that it can be shaken. The relative displacement between the rigid body part 4 and the high-rigidity structure part 1b increases as the vertical distance increases from the supporting part (here, the fourth floor), so that vibration damping performance can be improved.

Moreover, FIG. 11 is a schematic moment diagram of this embodiment, FIG. 12 is a schematic moment diagram of a first comparative example, and FIG. 13 is a schematic moment diagram of a second comparative example. Here, for convenience, the rigid body portion 4 (a portion corresponding to the core portion 4a) is shown in a rectangular shape. Further, an oil damper 10 is appropriately provided between the building body (highly rigid structure portion 1b) and the rigid body portion 4.

In the first comparative example (FIG. 12), the lower end of the rigid body part 4 is fixed to the first floor frame. That is, the rigid body part 4 of the first comparative example is in a state where the lower end is supported by the first floor frame (cantilever state). In this case, since the displacement difference between the rigid body part 4 and the building body (highly rigid structure part 1b) increases as you go up the floor, highly efficient energy absorption by the oil damper 10 can be expected (the vibration damping effect becomes higher). . However, in the case of this first comparative example, the moment (bending moment) is maximum at the lower end of the rigid body part 4, and the rigid body part 4 is required to have a rigidity corresponding to the maximum value of this moment.

On the other hand, in this embodiment (FIG. 11), the rigid body part 4 is supported by the frame (the beam 3 and the central column 2a) of the intermediate floor (here, the fourth floor). As mentioned above, as the distance from the intermediate floor (fourth floor) in the vertical direction increases, the displacement difference between the rigid body part 4 and the building body (highly rigid structure part 1b) increases, so that highly efficient energy absorption by the oil damper 10 becomes possible. You can expect it. Furthermore, in this embodiment, the moment is maximum at the intermediate floor, and this maximum value is smaller than the maximum moment value in the first comparative example. That is, in this embodiment, the rigidity required for the rigid body portion 4 is smaller than in the first comparative example. Thereby, the size of the rigid body portion 4 can be made more compact than in the first comparative example. Furthermore, in this embodiment, the section modulus of the vertical ends of the rigid body part 4 is made smaller than that of other parts, depending on the moment of the rigid body part 4. This makes it possible to further reduce the size. Further, by providing the left and right extending portions 4b and the front and rear extending portions 4c as the rigid body portion 4, out-of-plane deformation of the core portion 4a can be suppressed.

In the second comparative example (FIG. 13), the lower end of the rigid body part 4 is provided so as to be movable in the left-right direction while being restrained from moving in the front-back direction. Further, a brace 12 is provided diagonally between the intermediate floor (here, the fourth floor) and the first floor. Thereby, the rigid body part 4 is supported by the first floor frame.

In the case of this second comparative example as well, the moment is maximum at the intermediate floor, and the rigidity required for the rigid body part 4 can be made smaller than in the first comparative example. However, in the second comparative example, since the braces 12 are arranged diagonally, the degree of freedom in designing the lower floor area is reduced. On the other hand, in this embodiment, the rigid body part 4 is supported by the frame of the intermediate floor (fourth floor), and the brace 12 does not need to be provided. This increases the degree of freedom in designing areas on lower floors.

As explained above, according to the high-rise building 1 of the present embodiment, the rigid body part 4 that vertically penetrates inside the highly rigid structure part 1b is supported by the frame of the intermediate floor (fourth floor) of the rigid composite floor 1c. There is. Thereby, the rigidity required for the rigid body part 4 can be reduced, and the size of the rigid body part 4 can be made compact. In addition, the relative displacement between the high-rigidity structure part 1b and the rigid body part 4 increases as the distance from the intermediate floor increases in the vertical direction. It is possible to obtain greater vibration damping performance. Therefore, the vibration damping performance can be improved while reducing the rigidity required for the rigid body portion 4.

Further, the oil dampers 10 are provided above and below the intermediate floor, respectively. Thereby, it is possible to provide higher vibration damping performance.

The inside of the high-rigidity structure 1b has a space S2 formed in the vertical direction, the front-rear direction, and the left-right direction, and the oil damper 10 connects the high-rigidity structure 1b and the rigid body part 4 in the front-rear direction. There are provided one for connecting the high-rigidity structure section 1b and the rigid body section 4 in the left-right direction. This makes it possible to cope with damping in all directions (horizontal direction).

Moreover, the rigid body part 4 has a front-back extending part 4c extending in the front-back direction from the core part 4a, and a left-right extending part 4b extending in the left-right direction from the core part 4a. Thereby, out-of-plane deformation of the rigid body portion 4 can be suppressed.

Further, the section modulus of the rigid body section 4 at the ends in the vertical direction (upper end section, lower end section) is smaller than the section modulus of the rigid body section 4 at the intermediate floor. Thereby, the size can be further reduced, and the space (space S2) within the highly rigid structure portion 1b can be effectively utilized.

===Other embodiments===
Although the embodiments of the present invention have been described above, the above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to be interpreted as limiting the present invention. Further, the present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof. For example, the following modifications are possible.

In the above embodiment, the damping member is an oil damper, but the damping member is not limited to this, and may be a viscoelastic damper other than an oil damper, a friction damper, or the like.

Further, in the embodiment described above, the rigid composite story 1c was provided between the first and seventh floors of the high-rise building 1, but is not limited to this, and may be provided between other floors. In that case, the rigid part 4 may be supported by the frame of the floor (intermediate floor) between the top floor and the bottom floor of the rigid composite floor 1c.

Moreover, the planar shape of each part of the rigid body part 4 (the core part 4a, the left and right extending parts 4b, and the front and rear extending parts 4c) is not limited to the above-described embodiment. For example, each part may have a rectangular planar shape. Further, the left and right extending portions 4b and the front and rear extending portions 4c may be provided only on one side with respect to the core portion 4a, or the left and right extending portions 4b and the front and rear extending portions 4c may be provided on only one side with respect to the core portion 4a. may not be provided.

Furthermore, in the above-described embodiment, the oil dampers 10 on each floor in the high-rigidity structure 1b are the same (same damping effect), but this is not restrictive, and even if the oil dampers 10 have different damping effects. good. For example, the damping effect may be higher as the vertical distance from the intermediate floor (fourth floor) increases. Since the relative displacement between the rigid body part 4 and the high-rigidity structure part 1b increases as the distance from the intermediate floor (fourth floor) increases in the vertical direction, higher vibration damping performance can be provided.

1 high-rise building (structure), 1a low rigidity structure, 1b high rigidity structure,
1c Rigid composite floor, 2 Column (framework), 2a Central column (framework), 3 Beam (framework),
4 rigid body part, 4a core part, 4b left and right extension parts, 4c front and rear extension parts,
5 ground, 8 rigid body part protrusion, 9 beam protrusion, 10 oil damper (vibration damping member),
11 Brace (Y type brace), 12 Brace,
S void, S1 void space, S2 space

Claims (5)

a low-rigidity structure portion that forms a void space over multiple floors and has lower rigidity than a predetermined floor that does not have the void space;
a high-rigidity structure part connected to the low-rigidity structure part on the plurality of floors and having higher rigidity than the predetermined floor;
and a rigid composite floor having higher rigidity than the predetermined floor,
A structure connected to the predetermined floor,
It is supported so as not to be relatively displaceable by the frame of the intermediate floor consisting of the first floor between the top floor and the bottom floor in the rigid composite floor, and penetrates the inside of the high rigidity structure in the vertical direction, and has a higher rigidity than the high rigidity structure. A high rigid body part,
The high-rigidity structure part and the rigid body part are connected at a floor below and above the intermediate floor , and the high-rigidity structure part and the rigid body part are relatively displaced at the floors below and above the intermediate floor. a vibration damping member that damps vibration by
A structure characterized by having. The structure according to claim 1,
The vibration damping members are provided above and below the intermediate floor, respectively.
A structure characterized by: The structure according to claim 1 or 2,
The high-rigidity structural portion has a space formed in a front-rear direction and a left-right direction perpendicular to the up-down direction,
The vibration damping member includes a member that connects the high-rigidity structural portion and the rigid portion in the front-rear direction and a member that connects the high-rigidity structural portion and the rigid portion in the left-right direction.
A structure characterized by: The structure according to any one of claims 1 to 3,
The inside of the high-rigidity structure has a space formed in a front-rear direction and a left-right direction perpendicular to the up-down direction,
The rigid body part is
a front-back extending portion extending in the front-back direction;
a left-right extending portion extending in the left-right direction;
A structure characterized by having. The structure according to any one of claims 1 to 4,
The section modulus of the rigid section at at least one end in the vertical direction is smaller than the section modulus of the rigid section at the intermediate floor.
A structure characterized by:

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