JP6197506B2 - Damping structure and structure - Google Patents

Description

  The present invention relates to a vibration damping structure and a structure.

  A vibration damping structure in which a vibration damping member is provided in a structure including a pillar and a large beam connected to the pillar is already well known.

JP 2012-246675 A

  As such a vibration damping structure, there is a structure in which a brace, a stud, or a wall-type vibration damping member is provided as a vibration damping member. However, when braces, studs, or wall-type damping members are provided as damping members, situations frequently occur that interfere with building plans and facility plans.

  The present invention has been made in view of the above-described conventional problems, and a main object thereof is to realize a vibration damping structure that is unlikely to interfere with a building plan or an equipment plan.

The main present invention comprises an inner core column,
An outer tube column provided outside the inner core column, wherein a lower end portion of the outer tube column is integrated with the inner core column, while an upper end portion of the outer tube column is formed with respect to the inner core column. An outer tube column provided to be relatively displaceable,
A girder connected to the outer tube column;
It is a vibration damping structure characterized by having the damping material provided between the said outer pipe pillar or the said big beam, and the said inner core pillar.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to implement | achieve the damping structure which is hard to produce the condition which interferes with a building plan or an equipment plan.

It is a schematic side view of the vibration damping structure according to the present embodiment. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is the image figure which each showed the mode in the normal time and the time of an earthquake of the damping structure which concerns on this Embodiment. It is the conceptual diagram which showed the damping structure which concerns on a prior art example. It is a schematic side view of the damping structure which concerns on 2nd embodiment. It is a schematic side view of the damping structure which concerns on 3rd embodiment. It is the figure which showed the modification of the AA cross section of FIG. It is the figure which showed the modification of the BB cross section of FIG.

  At least the following will be made clear by the description of the present specification and the accompanying drawings.

The inner core,
An outer tube column provided outside the inner core column, wherein a lower end portion of the outer tube column is integrated with the inner core column, while an upper end portion of the outer tube column is formed with respect to the inner core column. An outer tube column provided to be relatively displaceable,
A girder connected to the outer tube column;
A vibration damping structure comprising a vibration damping material provided between the outer pipe column or the girder and the inner core column.

  In such a case, it is possible to realize a vibration control structure that is unlikely to interfere with a building plan or an equipment plan.

Next, the inner core,
A first outer tube column provided outside the inner core column, wherein a first lower end of the first outer tube column is integrated with the inner core column; A first outer tube column provided such that a first upper end portion is displaceable relative to the inner core column;
A second outer tube column provided on the outer side of the inner core column and on the upper side of the first outer tube column in a state adjacent to the first outer tube column in the vertical direction, the second outer tube A second outer side provided such that a second lower end portion of the column is integrated with the inner core column, and a second upper end portion of the second outer tube column is relatively displaceable with respect to the inner core column. Tube pillars,
A girder connected to be integrated with the second lower end of the second outer tube column and the inner core column;
Provided between the second lower end portion of the second outer tube column or the integrated portion of the inner core column integrated with the second lower end portion or the girder and the first outer tube column. And a vibration damping material.

  In such a case, it is possible to realize a vibration control structure that is unlikely to interfere with a building plan or an equipment plan.

Further, the girder is a second lower end girder,
A first lower end girder connected to be integrated with the first lower end of the first outer tubular column;
A second intermediate beam connected to be integrated with the intermediate portion of the second outer tube post;
A first intermediate beam connected to be integrated with an intermediate portion of the first outer tube column;
It is good also as having.

  In such a case, since the columns arranged in parallel also become long, the deformation difference from the inner core column becomes large, and it becomes possible to perform energy absorption by the damping material more appropriately.

  Further, the inner core column may be a steel pipe column or a CFT column using a high-strength steel material.

  In such a case, since the rigidity of the inner core column is reduced, it is possible to expect an effect of reducing vibration at the time of input due to the longer period similar to the seismic isolation structure.

Also, a structure comprising a lower layer structure provided with any of the above-described vibration damping structures, and an upper layer structure provided on top of the lower layer structure,
The upper layer structure column constituting the upper layer structure may be rigidly joined to the inner core column.

  In such a case, an effective seismic force reduction effect similar to the seismic isolation structure can be given to the upper structure.

=== About the Damping Structure According to the Present Embodiment ===
First, the vibration damping structure according to the present embodiment will be described with reference to FIGS. FIG. 1 is a schematic side view of the vibration damping structure according to the present embodiment. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 4 is an image diagram showing the state of the vibration damping structure according to the present embodiment during normal times and during earthquakes.

  The vibration control structure extends in the vertical direction (vertical direction) (in other words, the longitudinal direction is along the vertical direction) and the column 5 extends in the horizontal direction (in other words, the longitudinal direction is along the horizontal direction). And a large beam 30.

  Here, the column 5 according to the present embodiment has a double steel pipe structure as shown in FIG. That is, the pillar 5 is divided into an inner steel pipe 10 as an example of an inner core pillar and an outer steel pipe 15 as an example of an outer pipe pillar provided outside the inner steel pipe 10.

  The inner steel pipe 10 is a steel pipe column that uses a high strength CFT column or a high strength steel material that extends in the vertical direction (in other words, the longitudinal direction is along the vertical direction) and has a circular cross section (see FIG. 2). . In the case of a high-strength CFT column, the inner steel pipe 10 has a concrete-filled steel pipe structure in which the steel pipe 10a is filled with concrete 10b.

  The outer steel pipe 15 is a steel pipe extending in the vertical direction (in other words, the longitudinal direction is along the vertical direction). As shown in FIG. 1, the length in the vertical direction is the vertical direction of the inner steel pipe 10. It is shorter than the length of. Moreover, the cross section of the outer steel pipe 15 which concerns on this Embodiment is circular shape (refer FIG. 2) similarly to the inner steel pipe 10. As shown in FIG.

  Further, the outer steel pipe 15 is provided such that the lower end portion 15 a of the outer steel pipe 15 is integrated with the inner steel pipe 10, while the upper end portion 15 b of the outer steel pipe 15 can be relatively displaced with respect to the inner steel pipe 10. .

  That is, as shown in FIG. 1, the lower end portion 15a of the outer steel pipe 15 is fixed to the inner steel pipe 10 via a diaphragm (hereinafter referred to as the first diaphragm 20 for convenience). The outer steel pipe 15, the first diaphragm 20, and the inner steel pipe 10 are integrated. Therefore, the outer steel pipe 15 and the inner steel pipe 10 cannot be relatively displaced at the lower end portion 15a. That is, as shown in FIG. 4, when the outer steel pipe 15 and the inner steel pipe 10 are moved (vibrated) in the horizontal direction due to an earthquake, the outer steel pipe 15 and the inner steel pipe 10 are moved (vibrated) integrally.

  On the other hand, in the upper end portion 15b of the outer steel pipe 15, there is no diaphragm between the outer steel pipe 15 and the inner steel pipe 10, and the upper end portion 15b of the outer steel pipe 15 is relatively displaced with respect to the inner steel pipe 10. Can be done. That is, in the upper end portion 15b, when the outer steel pipe 15 and the inner steel pipe 10 move (vibrate) in the horizontal direction due to an earthquake, the outer steel pipe 15 and the inner steel pipe 10 move (vibrate) individually, and the outer steel pipe 15 A deformation difference occurs with the inner steel pipe 10. And, due to this deformation difference, the relative position in the horizontal direction of the outer steel pipe 15 with respect to the inner steel pipe 10 changes from moment to moment according to the earthquake (for example, in FIG. The inner steel pipe 10 is approaching the right side of the outer steel pipe 15). As can be easily understood from FIG. 4, the inner steel pipe 10 relatively moves with a portion integrated with the lower end portion 15 a (first diaphragm 20) of the outer steel pipe 15 as a fulcrum. This change is significant at the upper end 15b, but also occurs between the upper end 15b and the lower end 15a, and the degree of change becomes smaller as it approaches the lower end 15a.

  Further, as shown in FIG. 1, a large beam 30 is connected to the outer steel pipe 15. That is, in the present embodiment, the large beam 30 is attached to the upper end portion 15b of the outer steel pipe 15 via a diaphragm (hereinafter referred to as the second diaphragm 22 for convenience). Therefore, the outer steel pipe 15, the second diaphragm 22, and the large beam 30 are integrated in the upper end portion 15b. A slab 35 is provided above the large beam 30, and the slab 35 forms each intermediate floor of the structure 1. Further, a reinforcing rib 24 is provided at the lower part of the outer steel pipe 15 (lower part of the first diaphragm 20).

  And between the outer steel pipe 15 or the large beam 30 and the inner steel pipe 10 (in this embodiment, between the outer steel pipe 15 and the inner steel pipe 10. About the example provided between the large beam 30 and the inner steel pipe 10 Are described in a third embodiment to be described later), a filler 25 such as a viscous material, damping sand, fly ash or the like is provided as an example of a damping material.

  That is, as described above, the lower end portion 15 a of the outer steel pipe 15 is fixed to the inner steel pipe 10 via the first diaphragm 20, while the outer steel pipe 15 and the inner steel pipe 10 are connected at the upper end portion 15 b of the outer steel pipe 15. Since there is no diaphragm between the inner steel pipe 10 and the outer steel pipe 15, as shown in FIG. 1, a container-like space with a bottom (first diaphragm 20 corresponds to the bottom) with an opening at the top is provided. It has become. And in this Embodiment, the filler 25 is filled into this part (in the meantime).

  Accordingly, when the relative position of the outer steel pipe 15 with respect to the inner steel pipe 10 changes from moment to moment due to the deformation difference, energy absorption is achieved by the filler 25 provided between the inner steel pipe 10 and the outer steel pipe 15. As a result, a vibration control effect is produced.

  Next, the structure 1 according to the present embodiment shown in FIG. 1 and the like, that is, the structure 1 having the above-described vibration damping structure will be described. In the structure 1 according to the present embodiment, as shown in FIG. 1, there are a plurality of structural portions (referred to as vibration damping structure portions 40 for convenience) provided with the above-described vibration damping structure in the vertical direction (this embodiment). In the embodiment, there are three, which are arranged in order from the bottom, referred to as a first damping structure portion 41, a second damping structure portion 42, and a third damping structure portion 43).

  That is, each of the first damping structure portion 41, the second damping structure portion 42, and the third damping structure portion 43 includes the inner steel pipe 10 common to each damping structure portion 40 and each damping structure. The outer steel pipe 15 for every part 40, the girder 30 (slab 35), and the filler 25 are provided. In the present embodiment, the first damping structure portion 41 corresponds to the second floor of the intermediate floor, and the second damping structure portion 42 adjacent to the first damping structure portion 41 in the vertical direction is the middle. Corresponding to the third floor of the floors, the third vibration damping structure part 43 adjacent to the second vibration damping structure part 42 in the vertical direction corresponds to the fourth floor of the intermediate floor (see FIG. 1).

  Further, an upper layer structure portion 45 (in the upper layer structure) provided with a column (referred to as an upper layer structure portion column 47) and a large beam 30 (slab 35) is provided above the vibration damping structure portion 40 (corresponding to the lower layer structure). The upper layer structure portion 45 corresponds to the top floor (fifth floor).

  However, the upper layer structure portion column 47 of the upper layer structure portion 45 does not have a double steel pipe structure. Therefore, the upper layer structure portion column 47 is not provided with an equivalent to the inner steel tube 10 of the damping structure portion 40. It is not done. That is, as shown in FIG. 1, the inner steel pipe 10 extends only up to the third vibration damping structure portion 43 in the vertical direction, and the inner steel pipe 10 (the upper end portion thereof) is an upper layer structure portion column of the upper layer structure portion 45. 47 (the upper layer structure portion column 47 constituting the upper layer structure portion 45 is rigidly bonded to the inner steel pipe 10).

<<< Effectiveness of Damping Structure According to this Embodiment >>>
As described above, the damping structure according to the present embodiment is the inner steel pipe 10 and the outer steel pipe 15 provided outside the inner steel pipe 10, and the lower end portion 15 a of the outer steel pipe 15 is integrated with the inner steel pipe 10. The outer steel pipe 15 provided so that the upper end portion 15b of the outer steel pipe 15 can be displaced relative to the inner steel pipe 10, the large beam 30 connected to the outer steel pipe 15, and the outer steel pipe 15 or the large beam. 30 and the inner steel pipe 10 are provided with a vibration damping material (filler 25). Therefore, it is possible to realize a vibration control structure that is unlikely to interfere with a building plan or an equipment plan.

  That is, as described above, a damping structure in which a damping member is provided on a structure including a pillar and a large beam connected to the pillar is already well known. As the damping structure, a brace is used as the damping member. 5 and FIG. 5 show the conventional damping structure according to the conventional example. The left diagram of FIG. 5 shows a damping structure provided with a brace as a damping member. The center view of FIG. 5 shows a damping structure with a stud as a damping member, and the right figure of FIG. 5 shows a damping structure with a wall-type damping member as a damping member. )

  However, as can be easily understood from these figures, when bracing, studs, or wall-type damping members are provided as damping members, situations frequently occur that physically interfere with building plans and facility plans. It was. Then, when trying to arrange the damping member in search of a position that does not interfere, there is a disadvantage that the arrangement position and the number of arrangement of the damping member are limited.

  On the other hand, in the present embodiment, the pillar 5 has a double steel pipe structure, and the outer steel pipe 15 and the inner steel pipe 10 are integrated at the lower end portion 15a, while the outer steel pipe 15 is formed at the upper end portion 15b. The relative displacement with respect to the steel pipe 10 was made possible (the relative position of the outer steel pipe 15 in the horizontal direction with respect to the inner steel pipe 10 was changed every moment in response to an earthquake). And the filler 25 was provided between the outer steel pipe 15 and the inner steel pipe 10, and the energy absorption by the filler 25 was made using the said relative displacement.

  As described above, according to the present embodiment, it is possible to concentrate the damping function on the pillar itself or in the vicinity of the pillar. Therefore, it is possible to realize a vibration control structure that is unlikely to interfere with a building plan or an equipment plan.

  In the above embodiment, the inner steel pipe 10 is a steel pipe column or CFT column using a high-strength steel material. Since steel pipe columns and CFT columns using high-strength steel materials have high elastic deformation performance, the structure 1 can be obtained by making the inner steel pipe 10 into a steel tube column or CFT column using high-strength steel materials. The natural period can be made longer. That is, it is possible to give the above-described vibration control structure the effect of reducing vibration at the time of input due to the long period similar to the base isolation structure.

  Moreover, the cross section of the inner steel pipe 10 can be made small by making the inner steel pipe 10 into a steel pipe column or a CFT column using a high strength steel material (the cross section of the inner steel pipe 10 can be planned to be small). Therefore, the improvement of the damping effect by enlarging the gap between the inner steel pipe 10 and the outer steel pipe 15 can be expected.

  In the above embodiment, the structure 1 includes the vibration damping structure portion 40 having the above-described vibration damping structure and the upper layer structure portion 45 provided on the vibration damping structure portion 40. The upper layer structure portion column 47 constituting the upper layer structure portion 45 is rigidly joined to the inner steel pipe 10.

  Therefore, the inner steel pipe 10 performs the same function as the member (seismic isolation rubber or the like) that generates the seismic isolation function on the upper layer structure portion 45, and gives an effective seismic isolation function to the upper layer structure portion 45. Is possible.

=== About the Vibration Suppression Structure According to the Second Embodiment ===
First, a second embodiment (on the other hand, the above-described embodiment is referred to as a first embodiment) will be described with reference to FIG. FIG. 6 is a schematic side view of the vibration damping structure according to the second embodiment.

  As in the first embodiment, the vibration damping structure according to the second embodiment extends in the vertical direction (vertical direction) (in other words, the longitudinal direction is along the vertical direction) and the column 5 extends in the horizontal direction (in other words, In this case, the pillar 5 has a double steel pipe structure. That is, the column 5 is divided into an inner steel pipe 10 and an outer steel pipe 15 provided outside the inner steel pipe 10 as in the first embodiment.

  The structure of the inner steel pipe 10 is the same as the structure of the inner steel pipe 10 according to the first embodiment. That is, the inner steel pipe 10 is a high-strength CFT column that extends in the vertical direction (in other words, the longitudinal direction extends along the vertical direction) and has a circular cross section. That is, the inner steel pipe 10 has a concrete-filled steel pipe structure in which the steel pipe 10a is filled with the concrete 10b.

  The structure of the outer steel pipe 15 is the same as the structure of the outer steel pipe 15 according to the first embodiment. That is, the outer steel pipe 15 is a steel pipe extending in the vertical direction (in other words, the longitudinal direction is along the vertical direction), but the vertical length thereof is shorter than the vertical length of the inner steel pipe 10. It has become. Further, the cross section of the outer steel pipe 15 according to the second embodiment is circular like the inner steel pipe 10.

  Further, the outer steel pipe 15 is provided such that the lower end portion 15 a of the outer steel pipe 15 is integrated with the inner steel pipe 10, while the upper end portion 15 b of the outer steel pipe 15 can be relatively displaced with respect to the inner steel pipe 10. .

  That is, since the lower end 15a of the outer steel pipe 15 is fixed to the inner steel pipe 10 via the first diaphragm 20, the outer steel pipe 15, the first diaphragm 20, and the inner steel pipe 10 are integrated in the lower end 15a. ing. Therefore, the outer steel pipe 15 and the inner steel pipe 10 cannot be relatively displaced at the lower end portion 15a. That is, when the outer steel pipe 15 and the inner steel pipe 10 are moved (vibrated) in the horizontal direction due to an earthquake, the outer steel pipe 15 and the inner steel pipe 10 are moved (vibrated) integrally.

  On the other hand, in the upper end portion 15b of the outer steel pipe 15, there is no diaphragm between the outer steel pipe 15 and the inner steel pipe 10, and the upper end portion 15b of the outer steel pipe 15 is relatively displaced with respect to the inner steel pipe 10. Can be done. That is, in the upper end portion 15b, when the outer steel pipe 15 and the inner steel pipe 10 move (vibrate) in the horizontal direction due to an earthquake, the outer steel pipe 15 and the inner steel pipe 10 move (vibrate) individually, and the outer steel pipe 15 A deformation difference occurs with the inner steel pipe 10. Due to this deformation difference, the relative position in the horizontal direction of the outer steel pipe 15 with respect to the inner steel pipe 10 changes from moment to moment according to the earthquake.

  Moreover, although the large beam 30 is connected to the outer steel pipe 15 similarly to 1st embodiment, the connection position and the number of connections differ from 1st embodiment. That is, in the first embodiment, the girder 30 is attached to the upper end portion 15b of the outer steel pipe 15, but in the second embodiment, the girder is provided on both the lower end portion 15a and the intermediate portion 15c of the outer steel pipe 15. 30 is attached.

  Therefore, in the lower end portion 15a, four members, that is, the outer steel pipe 15 (that is, the lower end portion 15a), the first diaphragm 20, the inner steel pipe 10, and the large beam 30 are integrated. Further, in the intermediate portion 15c, the outer steel pipe 15 (that is, the intermediate portion 15c) and the large beam 30 are integrated.

  A slab (not shown in FIG. 6) is provided above the large beam 30, and the slab forms each intermediate floor of the structure 1.

  That is, a plurality of the outer steel pipes 15 described above are provided in the vertical direction (for example, the first outer steel pipe 110 as an example of the first outer pipe column and the second outer steel pipe as an example of the second outer pipe column). 120 are arranged side by side in the vertical direction (see FIG. 6), and the large beam 30 is connected to the lower end portion 15 a and the intermediate portion 15 c of each outer steel pipe 15.

  Specifically, the first outer steel pipe 110 and the second outer steel pipe 120 will be described. The lower end portion of the first outer steel pipe 110 (referred to as the first lower end portion 110a) is connected to the first lower end portion 110a (and the inner end). The first lower end large beam 112 is connected so as to be integrated with the steel pipe 10), and the intermediate portion (referred to as the first intermediate portion 110c) is integrated with the first intermediate portion 110c. The first intermediate beam 114 is connected. Similarly, the second outer steel pipe 120 provided on the upper side of the first outer steel pipe 110 adjacent to the first outer steel pipe 110 in the vertical direction is referred to as the second lower steel pipe 120 (referred to as the second lower end 120a). The second lower end large beam 122 is connected so as to be integrated with the two lower end portions 120a (and the inner steel pipe 10), and the intermediate portion (referred to as the second intermediate portion 120c) is connected to the second intermediate portion 120c. The second intermediate beam 124 is connected so as to be integrated.

  A slab is provided above each of the first lower end large beam 112, the first intermediate portion large beam 114, the second lower end large beam 122, and the second intermediate portion large beam 124. The slab above the first intermediate beam 114, the slab above the second lower beam 122, and the slab above the second beam 124 are the third and fourth floors of the intermediate floor, respectively. , Form the 5th and 6th floor. Thus, in the first embodiment, one outer steel pipe 15 (damping structure portion 40) is connected to one large beam 30, and only one floor corresponds, but in the second embodiment, The two outer beams 15 are connected to two large beams 30 and correspond to two floors.

  Also in the second embodiment, the damping material is provided as in the first embodiment, but the damping material according to the second embodiment is different from the first embodiment. That is, in the first embodiment, the filler 25 is provided as a damping material, but in the second embodiment, the oil damper 130 is provided as a damping material.

  Furthermore, the installation position of the damping material is also different from the first embodiment. That is, in the first embodiment, the vibration damping material (filler 25) is provided between the outer steel pipe 15 and the corresponding inner steel pipe 10, but in the second embodiment, a certain outer steel pipe 15 is provided. And the lower end portion 15a of the outer steel pipe 15 on the outer steel pipe 15 or the integrated portion 140 of the inner steel pipe 10 integrated with the lower end portion 15a or the lower end portion 15a and the inner steel pipe 10 are integrated. A vibration damping material (oil damper 130) is provided between the large beam 30 connected in this manner (in the present embodiment, the large beam 30).

  The first outer steel pipe 110 and the second outer steel pipe 120 will be specifically described. The first outer steel pipe 110 and the second lower end 120a of the second outer steel pipe 120 or the second lower end 120a are integrated with each other. Between the integrated part 140 of the steel pipe 10 or the second lower end part 120a and the second lower end part girder 122 connected so as to be integrated with the inner steel pipe 10, an oil damper as an example of a damping material is provided. (In this embodiment, as shown in FIG. 6, an oil damper 130 is provided between the first upper end 110b and the second lower end large beam 122 of the first outer steel pipe 110. ing).

  That is, as described above, the second lower end 120a of the second outer steel pipe 120 and the second lower end large beam 122 are integrated with the inner steel pipe 10, while the first upper end 110b of the first outer steel pipe 110 is The inner steel pipe 10 is not integrated.

  Accordingly, when the relative position of the first upper end 110b of the first outer steel pipe 110 with respect to the inner steel pipe 10 changes from moment to moment according to the earthquake due to the deformation difference, the second lower end large beam 122 integrated with the inner steel pipe 10 is obtained. Then, energy absorption is performed by the oil damper 130 provided between the first upper end portion 110b of the first outer steel pipe 110 and a vibration damping effect is generated.

  As a matter of course, since not only the second lower end portion beam 122 but also the second lower end portion 120a is integrated with the inner steel pipe 10, the oil damper 130 is connected to the second lower end portion 120a and the first outer steel pipe. 110 (first upper end portion 110b) may be provided, and even in such a case, a vibration damping effect is produced. Further, the oil damper 130 may be provided between the inner steel pipe itself (that is, the integrated portion 140) and the first outer steel pipe 110 (first upper end portion 110b). Will occur.

<<<< Effectiveness of Damping Structure According to Second Embodiment >>>>
As described above, the vibration damping structure according to the second embodiment is the inner steel pipe 10 and the first outer steel pipe 110 provided outside the inner steel pipe 10, and the first lower end 110 a of the first outer steel pipe 110. Is integrated with the inner steel pipe 10, while the first outer steel pipe 110 provided so that the first upper end portion 110b of the first outer steel pipe 110 can be displaced relative to the inner steel pipe 10, and the inner steel pipe 10 It is the 2nd outer steel pipe 120 provided in the outer side and the upper side of the 1st outer steel pipe 110 in the state adjacent to the 1st outer steel pipe 110 in the up-down direction, Comprising: The 2nd lower end part 120a of the 2nd outer steel pipe 120 is A second outer steel pipe 120 that is integrated with the inner steel pipe 10 and is provided so that the second upper end portion 120b of the second outer steel pipe 120 can be displaced relative to the inner steel pipe 10, and a second outer steel pipe 120. Are integrated with the second lower end 120a and the inner steel pipe 10. The second lower end large beam 122 and the second lower end portion 120a of the second outer steel pipe 120 or the integrated portion 140 of the inner steel pipe 10 integrated with the second lower end portion 120a or the second lower end large beam 122 and the first outer steel pipe 110 are provided with a vibration damping material (oil damper 130) provided between them.

  Therefore, as in the first embodiment, it is possible to consolidate the vibration damping function in the column itself or in the vicinity of the column, so that it is possible to realize a vibration damping structure that is unlikely to interfere with a building plan or facility plan. It becomes.

  In addition, the vibration damping structure according to the second embodiment is integrated with the first lower end large beam 112 connected to be integrated with the first lower end portion 110a and the second lower end portion 120a. The connected second lower end large beam 122, the first intermediate portion large beam 114 connected so as to be integrated with the first intermediate portion 110c, and the first intermediate portion connected so as to be integrated with the second intermediate portion 120c. And two middle beams 124.

  That is, as described above, in the first embodiment, one large beam 30 is connected to one outer steel pipe 15 (damping structure portion 40), and only one floor corresponds. However, if the intermediate large beams are provided in this way, as shown in the second embodiment, two large beams 30 are connected to one outer steel pipe 15, and two floors correspond to each other. By extension, the length of one outer steel pipe 15 can be longer than that of the first embodiment.

  And while the outer steel pipe 15 and the inner steel pipe 10 are integrated in the lower end part 15a of the outer steel pipe 15, the outer steel pipe 15 becomes relatively displaceable with respect to the inner steel pipe 10 in the upper end part 15b of the outer steel pipe 15. Therefore, the amount of the relative displacement is larger in the second embodiment in which the length of one outer steel pipe 15 is longer than in the first embodiment. Therefore, it has an advantage that energy absorption by the damping material is performed more appropriately.

  Further, if the intermediate beam is connected to the outer steel pipe 15 in addition to the lower beam, the rigidity of the outer steel tube 15 is increased as compared with the example in which only the lower beam is connected to the outer steel pipe 15 (the amount of deformation). Becomes smaller). Therefore, it becomes possible to increase the capacity (rigidity / strength) of the damping material that exhibits a damping effect. Therefore, energy absorption by the damping material can be performed more appropriately.

  Further, as described above, in the second embodiment, since two floors correspond to one outer steel pipe 15, if the number of damping materials is one for one outer steel pipe 15. The number of damping materials according to the second embodiment is smaller than that of the comparative example in which one floor corresponds to one outer steel pipe 15 (the total number of structures according to the comparative example and the second embodiment). Comparison when the floors are the same). Even if the number of damping materials is small in this way, a damping effect equivalent to or higher than that of the comparative example can be expected.

=== Other Embodiments ===
The above embodiments are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and it is needless to say that the present invention includes equivalents thereof. In particular, the embodiments described below are also included in the present invention.

  In the first embodiment, as an example in which a damping material is provided between the outer steel pipe 15 or the large beam 30 and the inner steel pipe 10, the damping material is provided between the outer steel pipe 15 and the inner steel pipe 10. However, as shown in FIG. 7, a damping material (oil damper 130) may be provided between the girder 30 and the inner steel pipe 10. FIG. 7 is a schematic side view of the vibration damping structure according to the third embodiment.

  In the third embodiment, the girder 30 is a ceiling receiving girder on the second floor, and an oil damper 130 is provided on the upper part. A third floor floor beam is located above the oil damper 130.

  In the third embodiment, as in the first embodiment, the structure 1 includes a vibration damping structure portion 40 having a vibration damping structure and an upper layer structure portion 45 provided on the vibration damping structure portion 40. The upper layer structure pillars 47 constituting the upper layer structure portion 45 are rigidly joined to the inner steel pipe 10. Then, as shown in FIG. 7, the above-mentioned third-story floor beam is provided in the upper layer structure portion 45 (becomes a part of the upper layer structure portion 45).

  In the second embodiment, unlike the first embodiment and the third embodiment, the upper layer structure portion column 47 that constitutes the upper layer structure portion 45 and is rigidly joined to the inner steel pipe 10 is not provided. As in the first embodiment and the third embodiment, such an upper layer structure column 47 may be provided.

  In the second embodiment and the third embodiment, the oil damper 130 is used instead of the filler 25 as the vibration damping material. That is, the filler 25 is not filled between the inner steel pipe 10 and the outer steel pipe 15, but is not limited to this, and the filler 25 is filled (in addition to the introduction of the oil damper 130). You may make it do.

  In the above description, the filler 25 and the oil damper 130 are taken as examples of the vibration damping material. However, the present invention is not limited to these, and any material having a vibration damping function may be used. For example, a friction damper may be used.

  Moreover, in the above, as shown in FIG.2 and FIG.3, although the cross section of the inner steel pipe 10 and the outer steel pipe 15 was circular shape, it is not limited to this. For example, as shown in FIGS. 8 and 9, a rectangular shape may be used. Further, the outer steel pipe 15 may be rectangular while the inner steel pipe 10 is circular, or the inner steel pipe 10 may be rectangular while the outer steel pipe 15 is circular. FIG. 8 is a view showing a modification of the AA cross section of FIG. FIG. 9 is a view showing a modification of the BB cross section of FIG.

  In the second embodiment, the outer steel pipe 15 corresponding to the third floor and the fourth floor and the outer steel pipe 15 corresponding to the fifth floor and the sixth floor are described as the first outer steel pipe 110 and the second outer steel pipe 120, respectively. However, the present invention is not limited to this. For example, the outer steel pipe 15 corresponding to the fifth floor and the sixth floor and the outer steel pipe 15 corresponding to the seventh floor and the eighth floor may be used as the first outer steel pipe 110 and the second outer steel pipe 120, respectively.

  In the second embodiment, two outer beams 30 are connected to one outer steel pipe 15 and two floors correspond to each other. However, the present invention is not limited to this. Two large beams 30 may be connected, and three or four floors may correspond.

  Moreover, it is not necessary that all the columns have this structure, and a general column beam structure may be mixed. Moreover, it is not necessary to make this structure over the entire length of the pillar, and it may be applied only to the required floor.

DESCRIPTION OF SYMBOLS 1 Structure 5 Column 10 Inner steel pipe 10a Steel pipe 10b Concrete 15 Outer steel pipe 15a Lower end part 15b Upper end part 15c Intermediate part 20 1st diaphragm 22 2nd diaphragm 24 Reinforcing rib 25 Filler 30 Large beam 35 Slab 40 Damping structure part 41st One damping structure portion 42 Second damping structure portion 43 Third damping structure portion 45 Upper layer structure portion 47 Upper layer structure portion column 110 First outer steel pipe 110a First lower end portion 110b First upper end portion 110c First intermediate portion 112 First lower end beam 114 First intermediate beam 120 Second outer steel pipe 120a Second lower end 120b Second upper end 120c Second intermediate portion 122 Second lower end beam 124 Second intermediate beam 130 Oil damper 140 Integrated portion

Claims (5)

The inner core,
An outer tube column provided outside the inner core column, wherein a lower end portion of the outer tube column is integrated with the inner core column, while an upper end portion of the outer tube column is formed with respect to the inner core column. An outer tube column provided to be relatively displaceable,
A girder connected to the outer tube column;
A vibration damping structure comprising a vibration damping material provided between the outer pipe column or the girder and the inner core column. The inner core,
A first outer tube column provided outside the inner core column, wherein a first lower end of the first outer tube column is integrated with the inner core column; A first outer tube column provided such that a first upper end portion is displaceable relative to the inner core column;
A second outer tube column provided on the outer side of the inner core column and on the upper side of the first outer tube column in a state adjacent to the first outer tube column in the vertical direction, the second outer tube A second outer side provided such that a second lower end portion of the column is integrated with the inner core column, and a second upper end portion of the second outer tube column is relatively displaceable with respect to the inner core column. Tube pillars,
A girder connected to be integrated with the second lower end of the second outer tube column and the inner core column;
Provided between the second lower end portion of the second outer tube column or the integrated portion of the inner core column integrated with the second lower end portion or the girder and the first outer tube column. And a vibration damping material. In the vibration damping structure according to claim 2,
The girder is a second lower end girder;
A first lower end girder connected to be integrated with the first lower end of the first outer tubular column;
A second intermediate beam connected to be integrated with the intermediate portion of the second outer tube post;
A first intermediate beam connected to be integrated with an intermediate portion of the first outer tube column;
A vibration damping structure characterized by comprising: A vibration damping structure according to any one of claims 1 to 3,
The inner core column is a steel pipe column or CFT column using a high-strength steel material. A structure comprising a lower layer structure provided with the vibration damping structure according to any one of claims 1 to 4, and an upper layer structure provided on top of the lower layer structure,
The upper layer structure column constituting the upper layer structure is rigidly joined to the inner core column.

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