JP2019027279A - Vibration control structure - Google Patents

Abstract

To provide a vibration control structure capable of securing a workability even in a narrow space.SOLUTION: A building 10 to which a vibration control structure is applied has: a beam member 23 with a H-shape cross section obtained by connecting two webs of T-shape steel to each other; a base frame 14 formed in a grid shape by installing the beam member 23 on the existing pole; and a support body 18 arranged on the base frame 14 and for supporting a mass body 16 movably in a horizontal direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration damping structure.

  As a vibration control device including a mass body and a seismic isolation device, Patent Document 1 discloses that components (linear slider, steel frame, weight, etc.) constituting the vibration control device are divided and carried into an existing building, Thereafter, a method of constructing a vibration control structure by combining parts is disclosed. Specifically, the foundation frame is lifted and installed on the roof of an existing building using a crane, and a linear slider and a steel frame are sequentially lifted and installed on the foundation frame. And the mass body of the damping device is constructed by stacking weights (weight plates) in the steel frame and solidifying them with mortar.

Japanese Patent No. 5094695

  However, if there is no area for constructing the vibration control structure on the roof of the existing building, it is necessary to construct the vibration control structure inside the existing building. In this case, the work is performed in a narrow space, and workability may be deteriorated.

  In view of the above facts, an object of the present invention is to provide a vibration damping structure capable of ensuring workability even in a narrow space.

  The vibration damping structure according to the first aspect of the present invention is formed in a lattice shape by joining two T-shaped steel webs to form a beam member having an H-shaped cross section, and laying the beam member on an existing column. A base gantry, and a support that is installed on the base gantry and supports the mass body so as to be movable in the horizontal direction.

  According to the vibration damping structure of the present invention described in claim 1, the mass body is supported by the support body installed on the base frame so as to be movable in the horizontal direction. Here, the base mount is configured by a beam member installed on an existing column. Further, the beam member is formed in an H-shaped cross section by joining two T-shaped steel webs. Thereby, each T type steel becomes a size smaller than the case where a beam member is comprised with H type steel. Thereby, when constructing a vibration control structure in an existing building, the T-shaped steel can be carried in by an elevator in the existing building, and it does not become a large-scale construction that is carried in by a lifting machine such as a crane.

  A vibration damping structure according to a second aspect of the present invention is the vibration damping structure according to the first aspect, wherein the mass body includes a plurality of H-shaped sections having an H-shaped cross section including an upper flange and a lower flange. A frame, and a plurality of weight plates stacked between the upper flange and the lower flange of the adjacent H-shaped frame, wherein the plurality of weight plates include the upper flange and the lower flange. It is inserted into a bar extending vertically between the flanges and is sandwiched between the upper flange and the lower flange.

  According to the vibration damping structure of the present invention as set forth in claim 2, since the mass body is composed of a plurality of weight plates, it can be carried in by an elevator in an existing building. Moreover, working efficiency can be improved by inserting and laminating | stacking a some weight plate in a rod. Furthermore, by sandwiching a plurality of weight plates between the upper flange and the lower flange of adjacent H-shaped frames, the H-shaped frame and the weight plate are integrated, and the rigidity of the mass body can be improved.

  As described above, according to the vibration damping structure of the present invention, workability can be ensured even in a narrow space.

It is a side view which shows the damping structure which concerns on embodiment. It is a top view of the base mount frame which comprises a damping structure. It is sectional drawing cut | disconnected by the 3-3 line of FIG. 2, which shows the procedure which constructs | assembles a base stand, (A) shows the state by which the lower T-shaped steel was constructed, (B) is the lower T-shaped steel and the existing frame. And (C) shows a state in which the upper T-shaped steel is joined above the lower T-shaped steel. It is the top view which fractured | ruptured the mass body which comprises the damping structure which concerns on embodiment. It is sectional drawing which shows the cut surface cut | disconnected by the 5-5 line | wire of FIG. 4, and is a figure which abbreviate | omitted illustration of some weight plates. It is sectional drawing corresponding to FIG. 5 which shows the procedure which builds a mass body, (A) shows the state which installed the lower T-shaped steel on the jack, (B) shows the weight plate inserted in the PC steel rod. It is a figure which shows the state currently performed. It is a side view which shows the damping structure which concerns on embodiment, and is a figure which shows the state which jacked up the mass body in the jackup process. It is a figure which shows the modification of embodiment, (A) is a principal part enlarged view which expands and shows the junction part of the existing housing and a base stand, (B) is the 8B-8B line | wire of FIG. 8 (A). It is sectional drawing which shows the cut surface cut | disconnected by.

  Hereinafter, a damping structure according to an embodiment of the present invention will be described with reference to the drawings. In addition, the arrow Z suitably shown in each figure has shown the height direction (up-down direction) of the building, and the arrow X and arrow Y which were suitably shown in each figure have shown two horizontal directions orthogonal to each other.

  For example, the building 10 to which the vibration damping structure of the present embodiment is applied is a high-rise tenant building having 50 floors or more, and the vibration damping device 12 constituting the vibration damping structure of the present embodiment is provided on the upper floor of the building 10. Has been placed. Note that the present invention is not limited to high-rise tenant buildings, and may be applied to high-rise apartments and other buildings. Moreover, you may arrange | position in another place not only in an upper floor. For example, the vibration control device 12 may be arranged on the middle floor of the building 10.

  As shown in FIG. 1, the vibration damping structure of the present embodiment mainly includes a vibration damping device 12 and a base frame 14 that supports the vibration damping device 12. The vibration damping device 12 is a TMD (Tuned Mass Damper) configured to include a mass body 16 and a laminated rubber 18 as a support, and includes a damping device such as a damper (not shown). Yes. In addition, oil buffers 22 that are shock absorbers are provided on the pillars (existing pillars) 20 of the building 10 on both sides of the vibration damping device 12.

(Configuration of base mount)
The base gantry 14 is formed by laying large beams 23 as beam members on the pillars 20 of the building 10. As shown in FIG. 2, the large beams 23 are installed between the pillars 20 of the building 10 in the X direction and the Y direction, and between the adjacent large beams 23, a small beam 24 is installed. As shown in FIG. 1, the girder 23 includes a pair of upper and lower upper flanges 23A and 23C, and a web 23B that connects the upper flange 23A and the lower flange 23C up and down and has a substantially H-shaped cross section. Is formed. The upper flange 23 </ b> A and the lower flange 23 </ b> C are welded to the diaphragm 26 provided on the outer wall of the column 20 of the building 10, and the web 23 </ b> B is welded to the outer wall of the column 20. Similarly to the large beam 23, the small beam 24 includes an upper flange, a lower flange, and a web and has a substantially H-shaped cross section.

  Further, a plurality of PC steel bars 28 are vertically inserted into the lower flange 23C of the large beam 23 at intervals. Specifically, the upper end portion of the PC steel rod 28 is inserted into the lower flange 23 </ b> C, and the lower end portion of the PC steel rod 28 is inserted into the slab 100 (existing housing) of the building 10. The nut 30 is screwed from the upper surface side of the lower flange 23 </ b> C, and the nut 30 is screwed from the lower surface side of the slab 100 to fasten the large beam 23 and the slab 100.

  In this embodiment, as shown in FIG. 2, as an example, three large beams 23 are installed in the X direction and four large beams 23 are installed in the Y direction. These numbers may be appropriately increased or decreased according to the size of the vibration damping device 12 or the size of the room in which the vibration damping device 12 is installed.

  In this embodiment, the beam width of the small beam 24 is formed wider than the beam width of the large beam 23. However, the present invention is not limited to this, and the beam width of the large beam 23 and the beam width of the small beam 24 are You may change suitably according to the conditions requested | required of the base mount frame 14. FIG.

  Here, with reference to FIG. 3, an example of the formation method of the large beam 23 in this embodiment is demonstrated. Since the method for forming the small beam 24 is the same as the method for forming the large beam 23, only the method for forming the large beam 23 is illustrated and described here, and the description of the method for forming the small beam 24 is omitted. . First, as shown in FIG. 3A, a lower T-shaped steel 34 having a substantially T-shaped cross section constituting the lower half of the large beam 23 is installed on the column 20. Here, the web 34B of the lower T-shaped steel 34 is installed so that it faces upward.

  Next, as shown in FIG. 3B, the PC steel rod 28 is inserted into the flange 34A of the lower T-shaped steel 34 and the slab 100, and the nut 30 is screwed and fastened. 3C, an upper T-shaped steel 36 having a substantially T-shaped cross section is disposed above the lower T-shaped steel 34, and a web 36B of the upper T-shaped steel 36 and a web 34B of the lower T-shaped steel 34 are disposed. And the upper T-shaped steel 36 is installed on the column 20. Here, the flange 36A of the upper T-shaped steel 36 becomes the upper flange 23A of the large beam 23, and the flange 34A of the lower T-shaped steel 34 becomes the lower flange 23C of the large beam 23. Reference numeral 38 denotes a backing metal.

  As described above, in the method of forming the large beam 23 (beam member) having a substantially H-shaped cross section by welding the webs of the lower T-shaped steel 34 and the upper T-shaped steel 36, the size of the member when being carried into the building 10 is reduced. it can. For this reason, the elevator etc. of the building 10 can be utilized.

(Configuration of laminated rubber)
As shown in FIG. 1, a laminated rubber 18 is installed on the base mount 14. The laminated rubber 18 is formed by laminating a rigid plate and a rubber plate, and supports the mass body 16 so as to be movable in the horizontal direction. Further, an upper flange 18A is provided at the upper end portion of the laminated rubber 18, and the upper flange 18A is fastened to a mass body 16 described later by bolts and nuts (not shown). On the other hand, a lower flange 18B is provided at the lower end portion of the laminated rubber 18, and the lower flange 18B is fastened to the base mount 14 by bolts and nuts (not shown).

  In the present embodiment, the laminated rubber 18 is provided as a support for supporting the mass body 16, but the present invention is not limited to this, and the mass body 16 can be moved in the horizontal direction as long as the configuration is supported. Other supports may be used. For example, a linear slider configured to be slidable in two horizontal directions may be used.

(Composition of mass body)
A mass body 16 is disposed above the laminated rubber 18. As shown in FIG. 4, the mass body 16 is formed between a plurality of H-type frames 40 and H-type frames 42 having a substantially H-shaped cross section, and adjacent H-type frames 40 (H-type frames 42). A plurality of weight plates 44 and weight plates 45 that are stacked are included.

  The H-shaped frame 40 extends in the Y direction and includes an upper flange 40A, a web 40B, and a lower flange 40C. In the present embodiment, as an example, a plurality of H-shaped frames 40 are arranged at intervals in the X direction. On the other hand, the H-shaped frame 42 extends in the X direction between the H-shaped frames 40, and includes an upper flange 42A, a web 42B, and a lower flange 42C (see FIG. 5).

  Here, a plurality of weight plates 44 are arranged in a region surrounded by the pair of H-shaped frames 40 and the pair of H-shaped frames 42. The weight plate 44 is formed in a substantially rectangular shape having the Y direction as a longitudinal direction in plan view, and is disposed in each of five regions surrounded by the pair of H-shaped frames 40 and the pair of H-shaped frames 42. . A plurality of weight plates 44 are stacked in each region.

  Weight plates 45 are arranged in regions on both sides in the Y direction across the web 42B with respect to the region where the weight plates 44 are arranged. The weight plate 45 is formed in a substantially rectangular shape whose length in the Y direction is shorter than that of the weight plate 44 in plan view, and is disposed along both ends of the mass body 16 in the Y direction.

  Next, detailed configurations of the H-shaped frame 42 and the weight plate 44 will be described with reference to FIG. In FIG. 5, for convenience of explanation, only the weight plate 44 is illustrated, and the weight plate 45 is not illustrated. In the following description, only the H-type frame 42 will be described, but the H-type frame 40 has the same configuration.

  The H-shaped frame 42 mainly includes a lower T-shaped steel 46 having a substantially T-shaped cross section disposed at a lower portion, a web plate 48 connected to a web 46A of the lower T-shaped steel 46 and extending in a vertical direction, and a web plate 48 and an upper flange plate 50 attached to the upper end of 48.

  The lower T-shaped steel 46 is arranged so that the web 46A faces upward. An outer splice plate 52 is disposed on the lower surface of the flange 46B of the lower T-shaped steel 46 constituting the lower flange 42C, and an inner splice plate 54 is disposed on the upper surface of the flange 46B. A plurality of bolts 56 are inserted from below the outer splice plate 52, and nuts 58 are screwed from above the inner splice plate 54. In this way, the flange 46B is sandwiched between the outer splice plate 52 and the inner splice plate 54.

  The lower end portion of the web plate 48 is abutted against the upper end portion of the web 46A of the lower T-shaped steel 46, and the web 42B of the H-shaped frame 42 is constituted by the web 46A and the web plate 48. Here, a pair of ancillary plates 60 and an ancillary plate 62 are arranged on both surfaces of the connecting portion between the lower T-shaped steel 46 and the web plate 48, and the ancillary plate 60 and the ancillary plate 62 are fastened with bolts and nuts. Thus, the lower T-shaped steel 46 and the web plate 48 are fixed. However, the present invention is not limited to this, and the lower T-shaped steel 46 and the web plate 48 may be fixed by other methods. For example, the web plate 48 may be welded to the lower T-shaped steel 46.

  An upper flange plate 50 is disposed at the upper end of the web plate 48. The upper flange plate 50 is disposed substantially parallel to the flange 46 </ b> B of the lower T-shaped steel 46, and is fixed by an L-shaped angle 64 disposed between the upper flange plate 50 and the web plate 48. The web plate 48 and the upper flange plate 50 may be connected by other methods. An outer splice plate 66 is disposed on the upper surface of the upper flange plate 50, and an inner splice plate 68 is disposed on the lower surface of the upper flange plate 50. The upper flange plate 50 is sandwiched between the outer splice plate 66 and the inner splice plate 68.

  A plurality of weight plates 44 are stacked between the upper flange 42A and the lower flange 42C of the H-shaped frame 42 configured as described above. In the present embodiment, as an example, 15 weight plates 44 are stacked. However, the present invention is not limited to this, and the number of weight plates 44 may be increased or decreased as appropriate according to the mass of the mass body 16.

  Here, a PC steel bar 72 as a bar extending vertically between the upper flange 42A and the lower flange 42C is disposed in the H-shaped frame 40, and a through hole of the weight plate 44 is provided in the PC steel bar 72. Is inserted. Further, the plurality of stacked weight plates 44 are sandwiched between the upper flange 42A and the lower flange 42C. In order to flatten the installation surface of the weight plate 44, an underlay plate 70 in which a hole corresponding to the shape of the nut 58 is formed is disposed between the lowermost weight plate 44 and the inner splice plate 54. Yes. In this embodiment, since the PC steel rod 72 is connected via the coupler 74, the weight plate 44 at the position where the coupler 74 is provided has a through-hole having a larger diameter than the other weight plates 44. Is formed. However, the present invention is not limited to this, and a PC steel rod extending from the upper flange 42A to the lower flange 42C without using the coupler 74 may be used.

  Next, an example of a construction method of the mass body 16 in the present embodiment will be described with reference to FIG. In the present embodiment, a method for constructing the mass body 16 on the jack 102 will be described as an example, but the present invention is not limited to this.

  First, as shown in FIG. 6A, the outer splice plate 52 is disposed on the jack 102 on the base mount 14, and the lower T-shaped steel 46 is disposed on the outer splice plate 52. At this time, the lower T-shaped steel 46 is disposed so that the web 46A faces upward. Further, the inner splice plate 54 is disposed on the upper surface of the flange 46B of the lower T-shaped steel 46, and the outer splice plate 52 and the inner splice plate 54 are fastened with bolts 56 and nuts 58 so as to sandwich the flange 46B. Further, a PC steel rod 72 is disposed at a position corresponding to the through hole of the weight plate 44. Specifically, the PC steel rod 72 is inserted from below the outer splice plate 52, and the nut 58 is screwed in from the opposite side to fix the PC steel rod 72.

  Next, as shown in FIG. 6B, an underlay plate 70 is disposed on the upper surface of the inner splice plate 54 on the side where the weight plate 44 is laminated. Then, a plurality of weight plates 44 are sequentially stacked on the underlying plate 70. Here, the weight plate 44 can be positioned efficiently by being laminated while being inserted into the PC steel rod 72.

  After the weight plate 44 is laminated to the vicinity of the upper end portion of the web 46A of the lower T-shaped steel 46, the web plate 48 is fixed to the upper end portion of the web 46A as shown in FIG. Moreover, the coupler 74 is attached and the PC steel rod 72 is extended. Thereafter, the weight plate 44 is laminated similarly to the above. Here, as the two weight plates 44 stacked at the position of the coupler 74, the weight plate 44 in which a through hole having a larger diameter than the other weight plates 44 is formed is used.

  After the weight plates 44 are stacked up to a predetermined number, the inner splice plate 68 is inserted into the PC steel rod 72. Then, one surface of the L-shaped angle 64 is fastened to the web plate 48, the other surface of the L-shaped angle 64 is fastened to the upper flange plate 50, and the upper flange plate 50 is fixed to the web plate 48.

  Finally, the outer splice plate 66 is disposed on the upper flange plate 50, and a nut 58 is screwed into the PC steel rod 72 to clamp the weight plate 44. In practice, the weight plate 45 is also laminated on the opposite side of the weight plate 44 with the web plate 48 interposed therebetween at the timing when the weight plate 44 is laminated. However, the present invention is not limited to this, and when the mass body 16 is configured by only the weight plate 44, the weight plate 45 may not be stacked.

(How to build a vibration control structure)
Next, an example of a construction method of the vibration damping structure will be described. As shown in FIG. 7, first, a base frame is formed by laying a large beam 23 as a beam member on a column 20 (existing column) of a building 10 by the above-described method (base frame forming step).

  Next, the jack 102 is installed on the base mount 14. At this time, the jacks 102 are installed so as to support the mass body 16. Moreover, the jack 102 is installed avoiding the place where the laminated rubber 18 is disposed. And the mass body 16 is constructed | assembled on this jack 102 by the method mentioned above (mass body construction process).

  Subsequently, the mass body 16 is jacked up by the jack 102 (jacking step). A laminated rubber 18 as a support is installed between the jacked-up mass body 16 and the base gantry 14, and the mass body 16 is supported by the laminated rubber 18.

  Finally, the jack 102 is removed, and a damper and an oil buffer 22 (not shown) are attached. The order in which the oil buffer 22 and the like are attached is not particularly limited. For example, it may be before the base mount 14 is formed. In some cases, the laminated rubber 18 may have a two-stage configuration, and the laminated rubber 18 and a linear slider may be used in combination.

(Function and effect)
Next, the operation and effect of the vibration damping structure of the present embodiment will be described. In the present embodiment, as described above, the mass body 16 is constructed before the laminated rubber 18 is installed, and the laminated rubber 18 is installed by jacking up the mass body 16. Thereby, since the work space at the time of constructing the mass body 16 can be secured, even if the gap between the mass body 16 after completion and the ceiling is narrow (narrow space), the damping structure Can be secured.

  Moreover, since jacking up is performed after the mass body 16 is constructed, the size of the mass body 16 can be freely set within a range in which the mass body 16 does not contact the ceiling after jacking up. For this reason, for example, when the vibration damping performance cannot be satisfied unless the mass body 16 is arranged up to the vicinity of the ceiling, the conventional method cannot secure a work space for stacking the weight plates 44, and the vibration damping is performed in a narrow space. The structure could not be built. On the other hand, in the construction method of this embodiment, the above-described problems can be avoided, and the mass body 16 can be arranged up to the vicinity of the ceiling.

  Further, in the present embodiment, as shown in FIG. 3, a large beam 23 having a substantially H-shaped cross section is formed by joining webs of two T-shaped steels (lower T-shaped steel 34 and upper T-shaped steel 36). ing. Thereby, size can be made smaller than the case where the girder 23 is comprised with general H-shaped steel. As a result, when building a damping structure in the building 10, the lower T-shaped steel 34 and the upper T-shaped steel 36 can be carried in by an elevator of an existing building, and a large-scale construction that is carried in by a lifting machine such as a crane. Is not necessary. Moreover, it is not necessary to consider the influence of the weather on the construction plan. Furthermore, the safety at the time of construction can be improved.

  Similarly, in the present embodiment, since the mass body 16 is composed of a plurality of H-shaped frames 40, a plurality of weight plates 44, and a weight plate 45, these members can also be carried in by an elevator. Further, as shown in FIG. 5, when the weight plate 44 (weight plate 45) is stacked, the weight plate 44 (weight plate 45) can be positioned simply by being inserted through the PC steel rod 72, so that the working efficiency can be improved.

  In the present embodiment, the plurality of weight plates 44 are sandwiched between the upper flange 42A (upper flange plate 50) and the lower flange 42C (flange 46B of the lower T-shaped steel 46) of the H-shaped frame 40. Thereby, the H type frame 40 and the weight plate 44 can be integrated, and the rigidity of the mass body 16 can be improved.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect. For example, in the present embodiment, the vibration is controlled by TMD. However, the present invention is not limited to this, and may be an AMD (Active Mass Damper) that actively moves the mass body 16 to suppress vibration. As an example of this AMD, a method for horizontally moving the mass body 16 with respect to the base gantry 14 by attaching an actuator and a sensor to the mass body 16 and operating the actuator according to the magnitude of vibration energy input to the building. There is.

  In the present embodiment, the weight plates 45 are arranged on both sides in the Y direction with respect to the plate 44 in FIG. 4, but the present invention is not limited to this. For example, when the required mass is relatively small, the mass body 16 may be configured with only the weight plate 44.

  Further, in this embodiment, in FIG. 5, the inner splice plate 54 and the outer splice plate 52 are disposed above and below the lower T-shaped steel 46, and the outer splice plate 66 and the inner splice plate 68 are disposed above and below the upper flange plate 50. Although it arrange | positions, it is not limited to this. That is, other members may be arranged in place of these splice plates. The same applies to the underlying plate 70 disposed on the inner splice plate 54.

  Moreover, it is not limited to the structure which carries in all the members which construct a damping structure with an elevator, You may use lifting machines, such as a crane, as needed. That is, from the viewpoint of avoiding large-scale construction, it is preferable that all members are carried by an elevator. However, for example, when a member such as a linear slider is used, if division is difficult to ensure accuracy, a crane or the like is used. You may carry in using a lifting machine.

  Furthermore, in this embodiment, as shown in FIG. 1, the large beam 23 and the slab 100 are fastened by inserting the PC steel rod 28 into the lower flange 23C of the large beam 23 and the slab 100. However, the present invention is not limited to this, and other structures may be adopted. As an example, a structure using a bundle 76 may be used as in the modification shown in FIG.

  As shown in FIG. 8A and FIG. 8B, in this modification, the steel beam 104 is exposed by rolling the slab 100, and the bundle material 76 is placed on the upper flange 104A of the steel beam 104. (Steel) is welded. Then, the large beam 23 is welded to the upper end portion of the bundle member 76 so that the large beam 23 is supported by the steel beam 104 via the bundle member 76.

  In this modification, the rib 25 is provided on the web 23B of the large beam 23, but the present invention is not limited to this, and a structure without the rib 25 may be used. Moreover, although the rib 106 is provided also in the steel beam 104, not only this but the structure without the rib 106 is good. Furthermore, in this modified example, as shown in FIG. 8A, the gap between the slab 100 and the large beam 23 is filled with the mortar 101, but this is not limitative. Moreover, although this modification is made into the structure using the steel beam 104 of the existing building, it is not restricted to this, You may newly install a steel beam.

  Furthermore, the size and thickness of the bundle member 76 are not particularly limited as long as they are dimensions that can support the large beam 23. Further, ribs may be separately welded on both surfaces of the bundle 76. In this case, if the upper end of the rib is welded to the lower flange 23C of the large beam 23 and the lower end of the rib is welded to the upper flange 104A of the steel beam 104, the rib 25 on the large beam 23 side and the rib 106 on the steel beam 104 side The load transmission efficiency between the two can be improved.

14 Base frame 16 Mass 18 Laminated rubber (support)
20 pillars (existing pillars)
23 Large beams (beam members)
34 Lower T-shaped steel (T-shaped steel)
34B Web 36 Upper T-shaped steel (T-shaped steel)
36B Web 40 H type frame 40A Upper flange 40C Lower flange 42 H type frame 42A Upper flange 42C Lower flange 44 Weight plate 45 Weight plate 72 PC steel rod (rod)
102 Jack

Claims (2)

Two T-shaped steel webs are joined together to form a beam member having an H-shaped cross section, and the base member is formed in a grid by laying the beam member on an existing column;
A support body installed on the base frame and supporting the mass body so as to be movable in the horizontal direction;
Damping structure with The mass body includes a plurality of H-shaped frames having an H-shaped cross section having an upper flange and a lower flange, and a plurality of weight plates stacked between the upper flange and the lower flange of the adjacent H-shaped frame. And includes
2. The plurality of weight plates are inserted into a bar extending vertically between the upper flange and the lower flange, and are sandwiched between the upper flange and the lower flange. Damping structure.