JP2019085786A - Structure and design method of structure - Google Patents

Abstract

To provide a structure and the like which allows stories provided with a void space (rigid composite stories) to have, unlike conventional ones, a vibration control property equivalent to or better than that of stories where a void space is not provided (specified floors).SOLUTION: A structure comprises: a low rigidity structure portion formed with a void space across a plurality of floors and having a rigidity lower than that of specified floors not including the void space; and a high rigidity structure portion connected to the low rigidity structure portion in the plurality of floors and having a high rigidity higher than that of the specified floors, in which rigid composite stories having a rigidity higher than that of the specified floors are provided and connected with the specified floors. The structure further comprises: a rigid body portion which is supported by a skeleton below the lowest floor in the rigid composite stories, which vertically penetrates an inside of the high rigidity structure portion and which has a rigidity higher than that of the high rigidity structure portion; and a vibration control component which connects the high rigidity structure portion with the rigid body portion and which controls vibration by a relative displacement of the high rigidity structure portion to the rigid body portion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to structures and methods for designing structures.

  A structure such as a building provided with a plurality of vertically extending blow-through spaces over a plurality of floors is known. In such a structure, the structural strength of the structure forming the blow-through space is reduced, and therefore the rigidity of the building is enhanced by making the wall body in the structure forming the blow-through space a multi-story seismic wall ( For example, refer to Patent Document 1).

Unexamined-Japanese-Patent No. 2004-124604

  Some buildings having a plurality of levels have dampers provided on each floor to absorb vibrational energy in accordance with the shear force that the structure receives due to earthquakes or the like. The damper absorbs vibrational energy due to interlayer displacement caused by earthquake motion or the like. Therefore, the larger the interlayer displacement, the larger the damping effect by the damper.

  In order to prevent layer collapse, the layer having void space such as the above-mentioned blow-through space has the rigidity of the portion adjacent to the void space enhanced and the interlayer displacement occurring between the layers with increased rigidity is small. There is a problem that it is difficult to obtain the damping effect due to

  The present invention has been made in view of such problems, and the object of the present invention is a structure having damping performance equal to or higher than that of a hierarchy having no void space even if it is a hierarchy having a void space. It is in providing the design method of a thing and a structure.

In order to achieve such an object, the structure of the present invention is
A low-rigidity structure portion which forms a void space extending over a plurality of floors and which is less rigid than a predetermined floor without the void space;
A high rigidity structural part which is connected to the low rigidity structural part in the plurality of floors and whose rigidity is higher than that of the predetermined floor;
A rigid composite layer having a rigidity higher than the predetermined floor,
It is a structure provided in connection with the predetermined floor,
A rigid body portion supported by a housing below the lowermost floor in the rigid composite layer and penetrating in the vertical direction in the high rigidity structure portion and having rigidity higher than that of the high rigidity structure portion;
A damping member that couples the high-rigidity structure portion and the rigid body portion, and performs relative vibration by the relative displacement between the high-rigidity structure portion and the rigid body portion;
It is a structure characterized by having.

  In a rigid composite layer having a void space, the interlayer displacement caused by earthquake motion is smaller than the interlayer displacement of a predetermined floor. For this reason, even if each floor of the rigid composite layer is provided with a damping member, the damping effect obtained is small.

  According to the above-mentioned structure, the rigid portion supported by the frame lower than the lowermost floor in the rigid composite layer and penetrating the inside of the high rigidity structural portion in the vertical direction is higher in rigidity than the high rigidity structural portion and therefore deformation due to earthquake motion is It is hard to occur. For this reason, when the high rigidity structure is deformed due to an earthquake or the like, relative displacement occurs between the high rigidity structure and the rigid portion, so that the damping member connecting the high rigidity structure and the rigid portion is used. It is possible to control vibration. At this time, since the rigid portion is supported by the lower frame in the rigid composite layer and penetrates the multi-story rigid composite layer, the rigid portion is more rigid as it is separated from the supported rod. The relative displacement between the structural part and the rigid part becomes large. For this reason, the damping member provided on the floor above the lowermost floor of the rigid composite hierarchy can obtain a greater damping effect than the damping member provided on each floor and damping by interlayer displacement for each floor. It is possible. That is, it is possible to provide a structure having damping performance equal to or higher than that of a predetermined floor even in a rigid composite hierarchy.

Such a structure,
It is desirable that the damping member connects the rigid portion to a portion of the high rigidity structural portion that forms a floor above the lowermost floor.

  According to such a structure, the damping member connects the rigid portion and the rigid portion forming the floor above the lowermost floor of the rigid composite layer, so that the displacement is controlled by the interlayer displacement of each level. It is possible to damp by relative relative displacement larger than the case of shaking. For this reason, it is possible to provide higher damping performance than in the case of damping by interlayer displacement.

Such a structure,
A plurality of the damping members are provided side by side in the vertical direction, and the damping effect by the damping member provided on the upper side of the two damping members located on the upper and lower sides is provided on the lower side. It is desirable that the damping effect of the damping member is higher than the damping effect.

  According to such a structure, it is possible to provide higher damping performance by providing the damping member on the upper floor of the rigid composite layer.

Such a structure,
It is desirable that the damping effect of the damping member increases as the distance of the damping member from the housing on which the rigid portion is supported increases.

  According to such a structure, it is possible to obtain a greater damping effect as the distance from the housing increases as each floor of the rigid composite layer and the rigid portion are connected. For this reason, since the difference with the case where it damps by the interlayer displacement for every hierarchy becomes large as it goes to the uppermost floor side from the lowest floor side, by providing a damping member more upwards, it is more as a whole rigid compound hierarchy. It is possible to provide high damping performance.

Such a structure,
The vibration control member is provided on the predetermined floor to suppress vibration by the interlayer displacement on the predetermined floor,
It is desirable that the damping performance in the rigid composite layer be equal to or greater than the damping performance in the predetermined floor.

  According to such a structure, it is possible to prevent the layer collapse in the rigid composite layer while providing the void space.

Such a structure,
The damping member generates a damping force by expanding and contracting with the change in the distance between the rigid body portion and the high rigidity structure portion.
It is desirable that the highly rigid structure portion collides with the rigid portion when the damping member expands or contracts more than a predetermined amount.

  According to such a structure, even when a large vibration exceeding the predetermined relative displacement amount occurs, the high rigidity structural portion is prevented from being deformed more than the predetermined amount, and the damping member has a predetermined amount. It is possible to prevent more elongation or contraction. Therefore, it is possible to increase the redundancy of the damping performance and to prevent the damping member from being damaged by damping by the damping member and suppressing deformation by collision.

Such a structure,
The rigid portion preferably functions as a structural material that bears the seismic force generated in the structure in a state in which the high rigidity structure abuts after the high rigidity structure collides.

  According to such a structure, the seismic force generated in the structure is also borne by the rigid body portion in a state in which the rigid body portion abuts on the rigid body portion after collision of the rigid body portion. After the collision, the rigid body part is integrated with the high rigidity structural part to improve the structural strength. Therefore, not only the damping effect by the damping member but also the structural resistance is improved, it is possible to further enhance the redundancy of the damping performance.

Such a structure,
It is desirable that a shock absorbing material be provided between the rigid body portion and the high rigidity structure portion.

  According to such a structure, since the shock absorbing material is provided between the rigid portion and the high rigidity structure, even if the high rigidity structure collides with the rigid portion, the high rigidity structure and It is possible to prevent damage to the rigid part.

Such a structure,
Below the rigid composite layer, there may be a floor having no void space.

  According to such a structure, it is possible to provide the rigid composite layer provided with the low rigidity structure at any position in the vertical direction of the structure.

Such a structure,
Preferably, the rigid portion is supported by a housing supporting the lowermost floor.

  According to such a structure, since the height of the rigid portion is substantially the same as the height of the rigid composite layer, high rigidity is achieved in the rigid composite layer while the height is suppressed to secure high rigidity of the rigid portion. It is possible to make the relative displacement between the structure portion and the rigid portion larger.

Such a structure,
There is a cylindrical space below the rigid part,
It is desirable that the rigid portion is supported by the casing surrounding the cylindrical space via a connection member.

  According to such a structure, the rigid portion is supported by the frame surrounding the non-pillar space provided below the rigid portion via the connection member, so that the non-pillar space is secured while securing the non-pillar space. It is possible to provide a rigid part on top of. That is, even in the structure including the rigid portion, since the cylindrical space can be provided therebelow, the degree of freedom in design is improved.

Also,
A low-rigidity structure portion which forms a void space extending over a plurality of floors and which is less rigid than a predetermined floor without the void space;
A high rigidity structural part which is connected to the low rigidity structural part in the plurality of floors and whose rigidity is higher than that of the predetermined floor;
A rigid composite layer having a rigidity higher than the predetermined floor,
A method of designing a structure provided in connection with the predetermined floor, wherein
A rigid body portion supported by a housing below the lowermost floor in the rigid composite layer and penetrating in the vertical direction in the high rigidity structure portion and having rigidity higher than that of the high rigidity structure portion;
A damping member that couples the high-rigidity structure portion and the rigid body portion, and performs relative vibration by the relative displacement between the high-rigidity structure portion and the rigid body portion;
Of the structure with
It is a design method of a structure characterized by setting damping performance in the rigid composite layer more than damping performance in the predetermined floor.

  According to such a method for designing a structure, it is possible to design a structure having damping performance equal to or higher than that of a layer having no void space, even in a layer having a void space.

A method of designing such a structure,
Designing the rigid body portion as a structural material that bears the seismic force generated in the structure in a state where the rigid body portion collides with the rigid body portion and abuts on the rigid body portion when the high rigidity structural portion is deformed more than a predetermined amount desirable.

  According to such a method for designing a structure, after the high rigidity structure collides, the rigid portion bears the seismic force generated in the structure in a state where the high rigidity structure is in contact with the rigid portion, so the high rigidity is achieved. After the structural parts collide, it is possible to design a structure in which the rigid part is integrated with the high rigidity structural part to improve the structural strength. Therefore, not only the damping effect by the damping member but also the structural resistance is improved, it is possible to design a structure with higher redundancy in damping performance.

  According to the present invention, even in a hierarchy having a void space (a rigid composite hierarchy), a structure having damping performance equal to or higher than a hierarchy (predetermined floor) in which the void space is not provided, and a design of this structure It is possible to provide a method.

It is the front view which showed the structure concerning the present invention notionally. It is AA sectional drawing in FIG. It is an enlarged view of the B section in FIG. It is a front view which shows a high-rise building in which a rigid part is supported by the beam which supports the floor of a basement 1st floor. It is a front view showing a high-rise building in which a rigid part is provided on a pillar-free space. It is a figure which shows the lower end junction part of the rigid part provided on cylindrical space.

  Hereinafter, an embodiment of a structure according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a front view conceptually showing a structure according to the present invention, and FIG. 2 is a cross-sectional view taken along line A-A in FIG. The structure according to the present embodiment is a high-rise building 1 having a void space S1 which becomes a blowout from the first floor to the sixth floor, as shown in FIG.

  In the high-rise building 1 of the present embodiment, as shown in FIG. 2, six pillars 2 provided to be spaced apart from each other in the left and right directions when the high-rise building 1 is viewed from the front, Between the two pillars 2 located at the leftmost position, there is a single pillar (hereinafter referred to as the left central pillar) 2a at the central position in the depth direction. It is provided.

  Beams that connect adjacent columns 2 in the left-right direction and columns 2 facing each other in the depth direction are bridged and joined to the parts constituting the seven or more floors in each column 2. .

  In the following description, pillars other than the pillar 2a at the left center are referred to as the first pillar 2, the second pillar 2, the third pillar 2 ... the sixth pillar 2 from the left, in the depth direction of the first pillar 2 The beam 3 bridged in the depth direction to the first beam 3 and the second column 2 the second beam 3 and the beam 3 bridged in the depth direction to the third column 2 3 Beam 3... The beam 3 bridged in the depth direction to the sixth column 2 will be described as the sixth beam 3.

  No beam is provided to connect the fifth pillar 2 in the depth direction to the part constituting the sixth or lower floors in each pillar 2, and the pillar 2a at the left center and the second beam 3 are beams in the left-right direction (Hereafter, it is called an intermediate beam) 3a.

  In the floors from the first floor to the sixth floor of the high-rise building 1, a void space S1 is formed on the right side of the fourth column 2. The structural part constituted by the beams 3 and the columns 2 surrounding the void space S1 has less the void space S1 because there are fewer beams 3 than the floors of 7 floors or more, for example, it is more rigid than the 7 floors (predetermined floors) Is a low structure portion (hereinafter referred to as a low rigidity structure portion) 1a. For this reason, in the high-rise building 1, a load-bearing wall (not shown) is a structural part connected to the low rigidity structural part 1a, more specifically, the fourth pillar 2 to the left structural part on the first floor to the sixth floor. Etc. are installed and rigidity is raised rather than the predetermined floors, such as the 7th floor. Hereinafter, a structural portion connected to the low rigidity structural portion 1 a to enhance rigidity is referred to as a high rigidity structural portion 1 b. Here, the hierarchy from the first floor to the sixth floor in which the low rigidity structural portion 1a and the high rigidity structural portion 1b are connected in the left-right direction corresponds to the rigid composite hierarchy 1c having higher rigidity than a predetermined floor.

  Between the second column 2 and the third column 2 of the high rigidity structural portion 1b in the rigid composite layer 1c, a wall-like rigid portion 4 is provided in alignment with the intermediate beam 3a in the depth direction. There is.

  The rigid portion 4 extends from the first floor to the sixth floor at almost the same level as the ground 5, and the upper end portion supports the slab forming the seventh floor without contacting the slab (not shown) forming the seventh floor. It has a height opposite to the beam 3 in the horizontal direction.

  As shown in FIG. 3, the rigid part 4 is made of concrete 4c in a ladder-like framework in which two H-shaped steels 4a spaced apart from each other in the left-right direction are joined by a plurality of H-shaped steels 4b arranged in the horizontal direction. And is formed into a panel shape, and is rigidly connected to and supported by a beam 3 which is a frame, is provided below the first floor, and supports a slab forming the first floor. The H-shaped steel 4b arranged in the horizontal direction is located at the same height as the beams 3 provided on each floor when the rigid portion 4 is erected in the high rigidity structural portion 1b. As shown in FIG. 1, since the rigid portion 4 is extremely low with respect to the height of the high-rise building 1 and extremely lightweight with respect to the weight of the high-rise building 1, the rigidity of the rigid portion 4 is high rigidity structural portion 1b The rigid body portion 4 which is higher than the rigidity of the above has rigidity not to be deformed even when an earthquake or the like occurs.

  As shown in FIG. 3, the width in the left-right direction of the rigid portion 4 is slightly smaller than the distance between the second beam 3 and the third beam 3. That is, an air gap S is provided between the two ends of the rigid portion 4 in the left-right direction and the second beam 3 or the third beam 3.

  The air gap S is set to a width that does not collide during an earthquake assumed in the design. The rigid portion functions as a structural member that bears the seismic force generated in the high-rise building 1 in a state where the high rigidity structural portion 1b abuts on the rigid portion 4 after the high rigidity structural portion 1b collides with the rigid portion 4. . Further, the air gap S is set to such a width that the oil damper 10 is not damaged even when the high rigidity structural portion 1 b collides with the rigid portion 4.

  Further, the second beam 3 and the third beam 3 opposed to the end portion of the rigid portion 4 in the left-right direction are buffers for relieving shock when the rigid portion 4 collides with the second beam 3 or the third beam 3 A material 7 is provided. Here, the cushioning material 7 may be provided on the rigid portion 4 side.

  On the left side from the center in the left-right direction of the rigid part 4, rigid part protruding parts 8 respectively projecting in the depth direction from the front side 4d and the back side 4e are provided respectively in accordance with the height of the beams 3 of each floor. . Further, the second beam 3 from the first floor to the sixth floor on the ground is provided with a beam projecting portion 9 projecting rightward so as to face the left end surface 8a of the rigid portion projecting portion 8 provided in the rigid portion 4 It is done. An oil damper 10 as a damping member is provided between the rigid body protruding portion 8 and the beam protruding portion 9 which project on the front side and the rear side.

  On the seventh and higher floors of the high-rise building 1, inside the rectangular frame formed by horizontally spaced columns 2 and vertically spaced beams 3 A damper 10 is provided. Inside the rectangular frame, a pair of braces 11 each having one end fixed and disposed in a V-shape is provided at or near the upper end corners. The oil damper 10 is horizontally disposed by connecting the lower end of the brace 11 and the lower part of the left or right pillar 2.

  An oil damper 10 provided between the rigid part 4 and the beam 3 in the rigid composite layer 1c, and an oil damper 10 provided between the Y-type brace 11 and the column 2 on the seventh floor or more Is the same, and the same number is provided on each floor. In the present embodiment, the case where two floors are provided on each floor will be described as an example.

  The high-rise building 1 according to the present embodiment is provided with the void space S1 and is thus connected to the low-rigidity structure 1a forming the void space S1, and a high-rigidity structure 1b is provided with load-bearing walls and the like to enhance rigidity. Is provided. For example, it is assumed that the rigidity of the high rigidity structural portion 1b is designed to be 1.5 times higher than the seventh floor which is a predetermined floor. At this time, when the ground motion is input to the high-rise building 1, the interlayer displacement amount of each floor in the high rigidity structural unit 1b from the first floor to the 6th floor is 1.5 times smaller than the interlayer displacement amount of the seventh floor. Therefore, if the oil damper 10 is provided between the Y-shaped brace 11 and the column 2 similarly to the floor having seven or more floors, the oil damper in the high stiffness structural part 1b is also assumed in the high stiffness structural part 1b. The damping effect of 10 will be smaller than the floors above 7 floors.

More specifically, assuming the damping force F per unit displacement of each oil damper 10 by the interlayer displacement x on the seventh floor,
The predetermined floor damping force Ga by the two oil dampers 10 on the seventh floor at this time is expressed by Equation 1.

Ga = 2 × x × F (Equation 1)
Then, when the Y-type brace 11 is provided in the high rigidity structural portion 1 b and the oil damper 10 is provided between the Y-type brace 11 and the column 2, two oil dampers of each floor of the high rigidity structural portion 1 b The damping force Gb according to 10 is expressed by Equation 2 because the interlayer displacement amount of each floor of the high rigidity structural portion 1b is x / 1.5.

Gb = 2 × (x / 1.5) × F (Equation 2)
As described above, also in the high rigidity structure portion 1b, when the oil damper 10 is provided between the Y-type brace 11 and the column 2 similarly to the floors above 7 floors, the high rigidity connected to the low rigidity structure portion 1a The damping performance in the structural portion 1 b is lower than the damping performance of the predetermined floor.

  Therefore, in the high-rise building 1 of the present embodiment, the oil damper 10 is provided between the beam 3 and the rigid portion 4 of each floor of the high rigidity structural portion 1 b. That is, the oil damper 10 provided in the high rigidity structural portion 1b is not damped by the relative displacement between the rigid body portion 4 and the beam 3 of each floor of the high rigidity structural portion 1b, not by the interlayer displacement of each floor of the high rigidity structural portion 1b. It is provided to generate a force.

  In the high-rise building 1 of the present embodiment, the relative displacement when the ground motion is input to the high-rise building 1 is different from the first floor to the sixth floor.

  The relative displacement between the beam 3 and the rigid portion 4 on each floor of the highly rigid structural portion 1b increases as the distance from the beam 3 positioned below the ground 5 and on which the rigid portion 4 is supported increases. More specifically, the relative displacement between the beam 3 and the rigid portion 4 of each floor of the high rigidity structural portion 1b is x / 1.5 for the first floor and the second floor for the interlayer displacement x of the seventh floor. 2x / 1.5, 3rd floor 3x / 1.5, 4th floor 4x / 1.5, 5th floor 5x / 1.5, 6th floor 6x / 1.5. For this reason, the high rigidity structure portion damping forces G1 to G6 by the two oil dampers 10 in each floor from the first floor to the sixth floor of the high rigidity structure portion 1b are expressed by Expressions 3 to 8.

G1 = 2 × (x / 1.5) × F (Equation 3)
G2 = 2 * (2x / 1.5) * F (Equation 4)
G3 = 2 × (3x / 1.5) × F (Equation 5)
G4 = 2 × (4x / 1.5) × F (Equation 6)
G5 = 2 × (5 × / 1.5) × F (Equation 7)
G6 = 2 × (6x / 1.5) × F (Equation 8)

The high stiffness structure portion total damping force GA of the entire high stiffness structure portion 1 b is as shown in Formula 9.
GA = G1 + G2 + G3 + G4 + G5 + G6
= 28 x F (equation 9)

At this time, the total damping force GN in the case where the oil damper 10 is provided between the Y-type brace 11 and the pillar 2 like the floors above 7 floors without increasing the rigidity from the first floor to the sixth floor is It is as shown in Formula 10.
GN = 6 × Ga
= 12 x F (Equation 10)
Therefore, by providing the oil damper 10 between the beam 3 and the rigid portion 4 of each floor of the high rigidity structural portion 1b, the present high-rise building 1 can have a damping force greater than that of the seventh and higher floors. is there.

In addition, the damping force G4 of the high rigidity structural part by the oil damper 10 provided on the fourth floor of the high-rise building 1 is
G4 = 2 × (4x / 1.5) × F
= 12xF
And the same as the total damping force GN in the case where the oil damper 10 is provided between the Y-type brace 11 and the pillar 2 like the floors above 7 floors without increasing the rigidity from the first floor to the sixth floor It is. Therefore, the oil damper 10 provided between the high rigidity structural portion 1b and the rigid portion 4 is not necessarily provided on each floor, and may be provided on any of four floors or more, or provided on a plurality of floors to provide a high rigidity structure. By setting the total damping force GA to be equal to or larger than the total damping force GN, the void space S1 is provided even in the rigid composite layer 1c having the void space S1. It is possible to provide vibration control performance equal to or higher than the seven floors above.

  According to the high-rise building 1 of the present embodiment, the rigid portion 4 which is supported by the beam 3 below the first floor which forms the lowermost floor of the rigid composite layer 1c and penetrates the inside of the high rigidity structural portion 1b in the vertical direction Since the rigidity is higher than that of the rigid structure 1b, deformation due to earthquake motion is unlikely to occur, but when the high rigidity structure 1b is deformed due to an earthquake or the like, the high rigidity structure 1b relatively displaces using the rigid portion 4 as a reaction force receiver. Therefore, it is possible to damp the oil damper 10 connecting the high rigidity structural portion 1b and the rigid portion 4 with each other. At this time, since the rigid portion 4 is supported by the beam 3 supporting the first floor, and penetrates the high rigidity structural portion 1b, the rigid portion 4 is separated from the supported beam 3 And the relative displacement of the rigid portion 4 becomes large. For this reason, the oil damper 10 provided on the floor above the first floor in the high rigidity structural unit 1b can obtain a larger damping effect than the oil damper 10 provided on each floor and damping by interlayer displacement. is there.

  Further, since the oil damper 10 connects the rigid portion 4 with the high rigidity structure portion 1b forming the floor above the first floor of the rigid composite layer 1c, the relative displacement is larger than in the case of damping each layer. The oil damper 10 damps the vibration. For this reason, it is possible to provide higher damping performance than in the case of installing the oil damper 10 that damps by inter-layer displacement.

  Further, the oil dampers 10 are provided on a plurality of floors in the rigid composite layer 1c, and the damping force increases as the distance from the beam 3 supporting the first floor on which the rigid portion 4 is supported increases. When each floor of the rigid composite layer 1c and the rigid portion 4 are connected to each other, it is possible to impart higher damping performance as the distance from the beam 3 supporting the first floor increases. For this reason, as it goes from the first floor side which is the lowermost floor of the high rigidity structural portion 1b to the sixth floor which is the uppermost floor, the difference from the case of damping by interlayer displacement for each hierarchy becomes large. It is possible to provide higher damping performance as a whole 1c.

  As described above, the high-rise building 1 according to the present embodiment is rigid even though it includes the void space S1 such as a venthole over a plurality of floors because the damping performance of the high rigidity structural portion 1b is equal to or higher than the damping performance of the predetermined floor such as the seventh floor. It is possible to prevent the layer collapse in the composite hierarchy 1c.

  Further, the oil damper 10 provided between the high rigidity structural portion 1b and the rigid portion 4 protrudes outward from the outer peripheral portion of the rigid portion 4, more specifically, the near side surface 4d and the far side surface 4e. Since it is connected to the rigid body portion projecting portion 8, the oil damper 10 and the rigid body portion 4 can be juxtaposed in the depth direction without the oil damper 10 and the rigid body portion 4 being arranged in series in the lateral direction. is there.

  Further, in the high-rise building 1 of the present embodiment, the high rigidity structural portion 1 b and the rigid portion 4 are provided with a gap S between both end portions of the rigid portion 4 in the left-right direction and the second beam 3 or the third beam 3 Since the relative displacement equal to or greater than the width of the air gap S occurs, the high rigidity structural portion 1 b collides with the rigid portion 4. For this reason, by setting the width of the air gap S narrower than the relative deformation caused by the earthquake above the assumption, it is possible to prevent the high rigidity structural portion 1b from being deformed larger than the assumed amount of displacement. As described above, in the high-rise building 1 according to the present embodiment, the oil damper 10 and the rigid portion 4 are arranged side by side in the depth direction, so both the damping effect by the oil damper 10 and the deformation suppressing effect by the collision It is possible to have. For this reason, it is possible to increase the redundancy of the damping performance.

  In addition, after the high rigidity structure portion 1b collides with the rigid portion 4, the high rigidity structure portion 1b is in contact with the rigid portion 4 until the displacement direction of the high rigidity structure portion 1b is reversed due to an earthquake above expectations. To bear the structural strength of Building 1 For this reason, after the high rigidity structure portion 1b collides, the rigid portion 4 is integrated with the high rigidity structure portion 1b to improve the structural strength. For this reason, not only the damping effect by the oil damper 10 but also the structural resistance is improved, it is possible to further enhance the redundancy of the damping performance.

  In addition, it is possible to prevent damage to the oil damper 10 by setting the width of the air gap S narrower than the limit at which the oil damper 10 can expand and contract. At this time, since the shock absorbing material 7 is provided between the rigid portion 4 and the high rigidity structural portion 1b, even when the high rigidity structural portion 1b collides with the rigid portion 4, the high rigidity structural portion 1b And it is possible to prevent damage to the rigid portion 4.

  Further, since the oil damper 10 is connected to the rigid body protruding portion 8 of the rigid body portion 4, the rigid body portion 4 itself does not have a defect or the like for connecting the oil damper 10. Therefore, the oil damper 10 can be provided without losing the rigidity of the rigid portion 4.

  In the above embodiment, an example is described in which the layer without the void space S1 is provided only above the rigid composite layer 1c on the ground, but the layer without the void space S1 is the rigid compound layer It may be provided below.

  In the above embodiment, although the example in which the rigid portion 4 is supported by the beam 3 supporting the first floor has been described, the rigid portion 4 is a housing located below the lowermost floor of the rigid composite layer 1c. It does not matter if it is supported, for example, as shown in FIG. 4, it may be supported by a beam 3 that supports the floor on the first basement floor.

  Moreover, in the said embodiment, although the rigid part 4 demonstrated the example connected by the beam 3 which does not have a housing and supports a 1st floor and is erected, it does not restrict to this. For example, as shown in FIG. 5, when a non-pillared space S2 in which a part of a plurality of pillars connected to the pillars 2 of the floor located above and below is not provided is provided below the rigid portion 4; The rigid portion 4 may be supported by the pillar 2 surrounding the cylindrical space S2 via the brace 12 as a connecting member. In this case, it is possible to provide the rigid portion 4 on the non-pillar space S2 while securing the non-pillar space S2. That is, even if it is a structure provided with the rigid part 4, since the cylindrical space S2 can be provided under it, the freedom degree of design improves. In this case, in order to support the rigid portion 4 by the brace 12, the lower end of the rigid portion 4 need only be fixed to the beam 3 constituting the non-columnar space S 2, and does not need to be supported. . Specifically, as shown in FIG. 6, a plate portion 4 f is vertically provided in the rigid portion 4 along the web of the H-shaped steel 4 b disposed in the horizontal direction at the lower end. The two walls 13a which project upward from the beam 3 constituting the above and slightly face each other with a slight gap are provided, and the plate parts hanging from the rigid part are inserted between the opposing walls and the bolt 14 It may be fixed by

  Further, as described above, according to the design method of the high-rise building 1 in which the vibration damping performance in the rigid composite layer 1c is set to be higher than the vibration damping performance on a predetermined floor, for example, void space S1 is not provided. It is possible to design a high-rise building 1 having damping performance equal to or higher than that of a hierarchy in which the void space S1 is not provided even in the rigid composite hierarchy 1c having the following.

  In addition, since the structural strength of the high-rise building 1 is borne in a state where the high rigidity structural portion 1b is deformed by more than a predetermined amount and collides with the rigid portion 4 and abuts on the rigid portion, the high rigidity structural portion 1b collides. After that, the rigid body part 4 is integrated with the high rigidity structural part 1b to improve the structural strength, and not only the damping effect by the oil damper 10 but also the structural strength to improve the damping performance with higher redundancy. It is possible to design a building 1.

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

  As mentioned above, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. It goes without saying that the present invention can be modified and improved without departing from the gist thereof, and that the present invention includes the equivalents thereof.

1 High-rise building (structure), 1a Low rigidity structure, 1b High rigidity structure,
1c Rigid composite hierarchy, 2 pillars (housing), 3 beams (housing), 4 rigid parts, 7 cushioning materials,
8 rigid body projection, 10 oil damper (damping member), 12 brace (connecting member),
S1 void space, S2 cylindrical space,

Claims (13)

A low-rigidity structure portion which forms a void space extending over a plurality of floors and which is less rigid than a predetermined floor without the void space;
A high rigidity structural part which is connected to the low rigidity structural part in the plurality of floors and whose rigidity is higher than that of the predetermined floor;
A rigid composite layer having a rigidity higher than the predetermined floor,
It is a structure provided in connection with the predetermined floor,
A rigid body portion supported by a housing below the lowermost floor in the rigid composite layer and penetrating in the vertical direction in the high rigidity structure portion and having rigidity higher than that of the high rigidity structure portion;
A damping member that couples the high-rigidity structure portion and the rigid body portion, and performs relative vibration by the relative displacement between the high-rigidity structure portion and the rigid body portion;
A structure characterized by having: The structure according to claim 1, wherein
The structure characterized in that the damping member connects the rigid portion to a portion of the high rigidity structural portion that forms a floor above the lowermost floor. A structure according to claim 1 or 2, wherein
The damping member is provided in a plurality of different floors, and the damping effect by the damping member provided on the upper side of the two damping members positioned above and below is provided on the lower side. A structure characterized in that it is higher than the vibration control effect by the vibration control member. A structure according to any one of claims 1 to 3, wherein
A structure characterized in that the damping effect by the damping member becomes larger as the distance from the casing on which the rigid portion is supported becomes longer. The structure according to any one of claims 1 to 4, wherein
The damping member is provided on the predetermined floor so as to dampen by the interlayer displacement of the predetermined floor,
The structure characterized in that the damping performance in the rigid composite layer is equal to or higher than the damping performance in the predetermined floor. The structure according to any one of claims 1 to 5, wherein
The damping member generates a damping force by expanding and contracting with the change in the distance between the rigid body portion and the high rigidity structure portion.
The high-rigidity structure portion collides with the rigid portion when the damping member expands or contracts more than a predetermined amount. The structure according to claim 6, wherein
The structure characterized in that the rigid portion functions as a structural material that bears the seismic force generated in the structure in a state where the high rigidity structure abuts after the high rigidity structure collides. A structure according to claim 6 or 7, wherein
A shock absorbing material is provided between the rigid body portion and the high rigidity structure portion. A structure according to any one of the preceding claims, wherein
A structure having a floor which does not have the void space below the rigid composite layer. The structure according to any one of claims 1 to 9, wherein
The structure in which the rigid body portion is supported by a housing supporting the lowermost floor. A structure according to any one of claims 1 to 10, wherein
There is a cylindrical space below the rigid part,
The structure in which the rigid portion is supported by the casing surrounding the non-columnar space via a connection member. A low-rigidity structure portion which forms a void space extending over a plurality of floors and which is less rigid than a predetermined floor without the void space;
A high rigidity structural part which is connected to the low rigidity structural part in the plurality of floors and whose rigidity is higher than that of the predetermined floor;
A rigid composite layer having a rigidity higher than the predetermined floor,
A method of designing a structure provided in connection with the predetermined floor, wherein
A rigid body portion supported by a housing below the lowermost floor in the rigid composite layer and penetrating in the vertical direction in the high rigidity structure portion and having rigidity higher than that of the high rigidity structure portion;
A damping member that couples the high-rigidity structure portion and the rigid body portion, and performs relative vibration by the relative displacement between the high-rigidity structure portion and the rigid body portion;
Of the structure with
A method of designing a structure, wherein the damping performance in the rigid composite layer is set to be higher than the damping performance in the predetermined floor. A method of designing a structure according to claim 12, wherein
The rigid body portion is designed as a structural material that bears structural strength of the structure in a state where the high rigid structure portion collides with the rigid body portion and abuts on the rigid body portion when the high rigidity structural portion is deformed more than a predetermined amount. How to design the structure to be.