JP2018199958A - Damping structure - Google Patents

Abstract

To provide a damping structure capable of efficiently installing a damper.SOLUTION: A damping structure 100 is a damping structure in which dampers 3A and 3B are installed in a structure plane formed by a pair of pillars P1 and P2 and a beam B bridged on the pair of pillars P1 and P2, and includes a support member 10 which is installed right above the beam B, extends in a direction orthogonal to the structure plane in the horizontal direction, and composed of a section steel, a connecting member 20 supported by the supporting member 10, a first damper 3A that connects one of the paired pillars P1, P2 and the connector 20, a second damper 3B that connects the other of the pair of pillars P1 and P2 and the connecting device 20, a first brace 4A connecting the upper end portion Pv of one pillar P1 and the connecting member 20, and a second brace 4B connecting the upper end portion Pv of the other pillar P2 and the connecting member 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vibration control structure.

  Conventionally, as a building with a seismic control structure, a damper is installed in a construction surface composed of columns, beams, etc., and interlayer deformation generated in the construction surface is transmitted to the damper via a brace and a joining member. Those that have a seismic control effect are known. For example, in Patent Document 1, a hysteresis damper such as a steel damper and an oil damper installed in a composition surface, a viscous damper such as an oil damper, a linear guide that supports the hysteresis damper movably in a horizontal direction along the composition surface, A seismic control structure equipped with is proposed.

JP2013-44155A

  Here, when the linear guide described in Patent Document 1 is installed, if the linear guide is not along the in-plane direction, the frictional resistance in the in-plane direction is increased, and the hysteretic damper is smoothly displaced. You will not be able to. For this reason, it is necessary to install the linear guide along the in-plane direction (in parallel) with high accuracy, and there is a problem that it takes time for position adjustment and the like, and construction efficiency is poor.

  Then, this invention is made | formed in view of the said situation, and provides the damping structure which can install a damper efficiently.

In order to achieve the above object, the present invention employs the following means.
That is, the vibration control structure according to the present invention is a vibration control structure in which a damper is installed in a structural surface formed by a pair of columns and a beam laid on the pair of columns, and is installed immediately above the beam. A support member made of shaped steel extending in a direction perpendicular to the construction surface in the horizontal direction, a connection tool supported by the support material, and connecting one of the pair of pillars and the connection tool. A first damper that connects the other pillar of the pair of pillars and the connection tool, a first brace that connects an upper end of the one pillar and the connection tool, and the other And a second brace for connecting the upper end of the column and the connection tool.

In the seismic control structure configured as described above, the support member that supports the connecting member that connects the first damper and the second damper is configured to be installed immediately above the beam, and thus supports the damper as in the past. Compared with the case of installing a linear guide, it is possible to easily install a support member made of a section steel (supporting the first damper and the second damper via a connecting tool), which is efficient.
In addition, the first damper and the second damper have a strong axis in the out-of-plane direction via the connector, and the first damper The two dampers can be restrained in the out-of-plane direction.

  Further, in the vibration control structure according to the present invention, the support material is an H-shaped steel having a web and flanges provided at both ends of the web, and the flange is installed immediately above the beam. Preferably it is.

  In the damping structure constructed in this way, the first damper and the second damper are only resisted by the H-shaped steel web in the in-plane direction where the damper effect is present, so that a large load does not act on the damper. Does not hinder the effect. Further, since the proof strength is greater than the damper resistance force of the first damper and the second damper in the out-of-plane direction, the movement of the first damper and the second damper in the out-of-plane direction can be reliably restrained.

  Moreover, the damping structure which concerns on this invention may be comprised as a unit with which the said support material and the said connection tool were mutually connected.

  In the vibration control structure configured as described above, since the support member and the connection tool are units connected to each other, workability when the support member and the connection tool are installed is good.

  In the vibration control structure according to the present invention, the first damper and the second damper may be oil dampers.

  In the seismic control structure configured as described above, the oil damper can suppress the shaking of the structure from a small earthquake to a large earthquake.

  According to the vibration control structure of the present invention, the damper can be installed efficiently.

It is a schematic block diagram which shows the damping structure which concerns on one Embodiment of this invention. It is a figure which shows the construction method of the damping structure which concerns on one Embodiment of this invention, (a) It is the figure which installed the support material and the connection tool, (b) In the figure which installed the 1st brace and the 2nd brace (C) It is the figure which installed the 1st damper and the 2nd damper. FIG. 2 is a diagram corresponding to a cross-sectional view taken along line AA in FIG. It is a figure which shows the support material used in the trial design of the damping structure which concerns on one Embodiment of this invention.

A vibration control structure according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram illustrating a vibration control structure according to an embodiment of the present invention.
As shown in FIG. 1, the damping structure 100 of the present embodiment has a damper installed in a single plane formed by a pair of columns P1 and P2 and a beam B installed on the pair of columns P1 and P2. It has been done.

  The vibration control structure 100 includes a connection unit 1, oil dampers 3A and 3B, and braces 4A and 4B.

  The connection unit 1 has two H-section steels (support materials) 10 and a damper connection jig (connector) 20.

  The two H-section steels 10 are installed on the beam B and arranged in parallel. In the present embodiment, each H-section steel 10 is orthogonal to the direction connecting the columns P1 and P2 and extends in a direction along the horizontal direction (direction orthogonal to the paper surface shown in FIG. 1).

  The H-section steel 10 is provided at an installation portion 11 (lower flange) installed on the beam B, an upright portion 12 (web) extending upward from the installation portion 11, and an upper end portion of the upright portion 12. And a support portion 13 (upper flange) for supporting the damper connecting jig 20.

  The damper connecting jig 20 has an installation part 23 installed on the support part 13 of the two H-section steels 10 and a connecting part 22 connected to the installation part 23 and connectable to the braces 4A and 4B. doing. The shape and the like of the damper connecting jig 20 can be set as appropriate, and are configured by assembling a steel material or the like, for example.

  On the lower surface of the installation portion 23, supported surfaces 21 that are respectively supported by the support portions 13 of the two H-beams 10 are formed. The installation part 23 may be a rigid body having such a rigidity that the axial force of the braces 4A and 4B can be transmitted as a shearing force.

  The H-shaped steel 10 and the damper connecting jig 20 are connected to each other by well-known means (not shown) such as welding and bolt / nut fasteners.

  The oil damper 3A has one end 31 connected to one end 28 of the damper connecting jig 20 and the other end 32 connected to a damper mounting jig 39 provided on the column P1. The oil damper 3B has one end 33 connected to the other end 29 of the damper connecting jig 20 and the other end 34 connected to a damper mounting jig 39 provided on the column P2.

  The brace 4A has an end 41 connected to the damper connecting jig 20 and an end 42 connected to the upper end (column beam joint) Pu of the column P1. Further, the brace 4B has an end portion 43 connected to the damper connecting jig 20 and an end portion 44 connected to the upper end portion (column beam joint portion) Pv of the column P2. The brace 4A and the brace 4B form a V shape.

Next, a construction method of the above-described vibration control structure 100 will be described.
FIG. 2 is a diagram showing a construction method of the vibration control structure 100, (a) a diagram in which the connection unit 1 is installed, (b) a diagram in which the braces 4A and 4B are installed, and (c) an oil damper 3A. , 3B is installed.
First, a connection unit installation process is performed.
The connecting unit 1 is manufactured in advance by connecting the two H-shaped steels 10 and the damper connecting jig 20 at a factory or construction site. As shown in FIG. 2A, the connection unit 1 is installed on the beam B or directly above the beam B in the floor slab. The H-section steel 10 of the connection unit 1 is fixed to the floor slab or beam B with bolts and nuts.

Next, a brace installation process is performed.
As shown in FIG. 2B, the end portions 41 and 43 of the braces 4A and 4B are connected to the damper connecting jig 20, and the end portions 42 and 44 are respectively connected to the upper end portions Pu and Pv of the columns P1 and P2. Link.

Next, an oil damper installation process is performed.
As shown in FIG. 2C, the end portions 31 and 33 of the oil dampers 3A and 3B are connected to the end portions 28 and 29 of the damper connecting jig 20, and the end portions 32 and 34 are provided on the columns P1 and P2. The damper jig 39 is connected. In this way, the construction of the earthquake resistant structure 100 is completed.

  In the damping structure 100 configured in this way, the H-section steel 10 that supports the damper connecting jig 20 that connects the oil dampers 3A and 3B is installed on the beam B. Compared with the case of installing a linear guide that supports the oil damper, the H-section steel 10 (which supports the oil dampers 3A and 3B via the damper connecting jig 20) can be easily installed. Efficiency is good.

  In addition, the oil dampers 3A and 3B have a strong axis in the out-of-plane direction via the damper connecting jig 20 because the H-section steel 10 is installed so as to extend in a direction perpendicular to the construction surface in the horizontal direction. The dampers 3A and 3B can be restrained in the out-of-plane direction.

  Moreover, since it only resists by the standing part 12 (web) of the H-section steel 10 in the in-plane direction with the damper effect of the oil dampers 3A and 3B, a large load does not act and the damper effect is not hindered. . Further, since the proof force is greater than the damper resistance force of the oil dampers 3A and 3B in the out-of-plane direction, the movement of the oil dampers 3A and 3B in the out-of-plane direction can be reliably restrained.

  Moreover, since the H-section steel 10 and the damper connection jig 20 are units connected to each other (connection unit 1), workability when installing the H-section steel 10 and the damper connection jig 20 is good.

  Further, by adopting oil dampers 3A and 3B as dampers, it is possible to suppress the shaking of the structure in response to small earthquakes to large earthquakes.

Next, the results of trial design of the damping structure 100 of the present embodiment will be described mainly with reference to FIGS.
FIG. 3 is a diagram corresponding to the cross-sectional view taken along the line AA of FIG. 1 in the trial design of the vibration control structure 100 according to the present embodiment. FIG. 4 is a view showing a support material (H-shaped steel) used in the trial design of the vibration control structure 100 according to the present embodiment.
As shown in FIG. 3, four oil dampers (maximum 8000 kN) with a maximum load of 2000 kN were adopted as the oil damper. Two columns were installed in the depth direction of the column (in the horizontal direction, the direction perpendicular to the construction surface).

  Two H-section steels having the cross-sectional shape and dimensions shown in FIG. 4 were installed. The length of the H-section steel is 1000 mm.

  In a large earthquake, the H-shaped steel web (standing portion 12) yields due to the horizontal force of the oil damper. Since the resistance force of one H-section steel during yielding is about 140 kN, two are 280 kN. On the other hand, the resistance force of the oil damper is a maximum of 8000 kN. Since the resistance force 280 kN of the two H-section steels is about 3.5% of the maximum resistance force 8000 kN of the oil damper, the resistance effect by the H-section steel does not hinder the damper effect.

  Moreover, since the H-section steel can withstand up to 23500 kN in the out-of-plane direction, it can restrain the movement of the damper without yielding. The axial force from the brace is slightly applied to the H-shaped steel, but the H-shaped steel is not deformed.

  It should be noted that the assembly procedure shown in the above-described embodiment, or the shapes and combinations of the constituent members are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, in the embodiment described above, the H-section steel 10 is adopted as the support material, but the present invention is not limited to this, and the shape can be appropriately set as long as the support material is a shape steel. It may be an I-shaped steel or the like.

  In the embodiment described above, there are two H-section steels 10, but the number and the like can be appropriately set. It is preferable to determine the number of support members so that the damper effect is not hindered by the resistance force of the H-section steel 10.

  Moreover, although the oil damper was mentioned as an example and demonstrated as an example as a 1st damper and a 2nd damper in embodiment shown above, this invention is not restricted to this, A hysteresis type damper and a steel material damper may be sufficient.

DESCRIPTION OF SYMBOLS 1 ... Connection unit 3A, 3B ... Oil damper 4A, 4B ... Brace 10 ... H-section steel (support material)
DESCRIPTION OF SYMBOLS 11 ... Installation part 12 ... Standing part 13 ... Supporting part 20 ... Damper connection jig (connector)
21 ... supported surface 22 ... connecting part 100 ... damping structure B ... beam P ... pillar

Claims (4)

A damping structure in which a damper is installed in a structural surface formed by a pair of columns and a beam laid on the pair of columns,
A support material, which is installed directly above the beam and extends in a direction perpendicular to the construction surface in the horizontal direction, and is made of a steel shape;
A connector supported by the support material;
A first damper that connects one of the pair of pillars and the connector;
A second damper that connects the other pillar of the pair of pillars and the connector;
A first brace that connects the upper end of the one pillar and the connector;
A vibration control structure comprising: a second brace for connecting the upper end of the other column and the connection tool. The support material is an H-shaped steel having a web and flanges provided at both ends of the web,
The vibration control structure according to claim 1, wherein the flange is installed immediately above the beam.   The vibration control structure according to claim 1, wherein the support member and the connector are configured as a unit connected to each other.   The said 1st damper and a 2nd damper are oil dampers, The damping structure as described in any one of Claim 1 to 3 characterized by the above-mentioned.

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