JP6774840B2 - Viscoelastic damping damper - Google Patents

Description

The present invention relates to a viscoelastic damping damper.

Conventionally, the first member and the second member attached to the building structure, and the first member and the second member are connected to absorb the vibration energy transmitted from the building structure to the first member or the second member. A viscoelastic body and a viscoelastic vibration damping damper including the viscoelastic body are known.
As this kind of viscoelastic vibration damping damper, for example, as shown in Non-Patent Document 1 below, a first member and a first member separately attached to a pair of columns (building structures) arranged at intervals in the vertical direction. Of the two members, the first member is the first in a state where the first main body plate whose front and back surfaces are attached to the building structure along the vertical direction and the first main body plate are sandwiched in one direction in which the front and back surfaces face. A pair of connecting plates connected to the main body plate are provided, and the second member is attached to the building structure in a state of being arranged at different positions in the vertical direction from the first main body plate, and is attached to the pair of connecting plates. The second main body plate sandwiched in the one direction is provided, and a pair of viscoelastic bodies are arranged with the second main body plate sandwiched in the one direction so as to separately connect the pair of connecting plates and the second member. The structure (hereinafter referred to as "intermediate pillar type") is known.
Further, as this type of viscoelastic vibration damping damper, for example, as shown in Non-Patent Document 1 below, the first member and the second member have a long shape, and the first member is a tubular second member. While being inserted inside, the first member is arranged on the inner surface of the second member via a viscoelastic body, and the first member and the second member are inclined in the vertical direction, and the first member A configuration in which one end in the longitudinal direction and the other end in the longitudinal direction of the second member are separately attached to the building structure (hereinafter referred to as "brace type") is also known. ..

"Nippon Steel Engineering's Viscoelastic Vibration Control Damper", [online], Nippon Steel & Sumikin Engineering Co., Ltd., [Search on September 12, 2016], Internet <URL: http://www.nsec-steelstructures.jp/data /base_isolation/vem_std.pdf>

However, among the conventional viscoelastic vibration damping dampers, in the inter-column type, if the installation accuracy of this column is lowered due to the processing accuracy and assembly accuracy of the steel frame around the column to which the viscoelastic damping damper is attached, the column If the dimension between them deviates from the design value, the installation accuracy of the viscoelastic vibration damping damper will decrease. For example, the first member will be tilted (or at least) with respect to the second member, and a part of the viscoelastic body will be affected. There was a risk of large local deformation in the plate thickness direction.
Further, in the brace type, when installing the viscoelastic damping damper, it is often temporarily attached by pin joining, and the first member and the second member rotate relative to each other about the end portion in the longitudinal direction. In some cases, the position shift occurred, and the weights of the first member and the second member acted directly on the viscoelastic body. As a result, when the viscoelastic body is greatly deformed, especially in a high temperature environment such as in summer, the first member is tilted (attracted) with respect to the second member, and the outer surface of the first member is formed. , The inner surface of the second member may partially come into contact with the inner surface, and if the main connection is made as it is, the installation accuracy of the viscoelastic damping damper may be lowered.
As described above, if the viscoelastic damping damper is installed in a state where the viscoelastic body is greatly deformed, there is a possibility that the desired damping performance may not be exhibited.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a viscoelastic vibration damping damper that can be installed with high accuracy.

In order to solve the above problems, the viscoelastic vibration damping damper according to the first aspect of the present invention connects the first member and the second member to be attached to the building structure, and the first member and the second member. and, wherein a viscoelastic body for absorbing vibration energy input from the building structure, Bei example, said first member is configured so as to sandwich the second member via said viscoelastic body in the direction of plate thickness A viscoelastic vibration damping damper, a bolt member having a female threaded portion formed on the inner peripheral surface and a nut member arranged on the first member and a male threaded portion screwed with the female threaded portion on the outer peripheral surface. The direction in which the bolt member projects from the first member in a direction intersecting the direction in which the viscoelastic body suppresses vibration, and the direction in which the viscoelastic body suppresses vibration is provided on the second member. It is characterized by sliding on .

According to the present invention, since a plurality of support members that protrude from the first member in the intersecting direction and slide on the second member in the direction in which the viscoelastic body suppresses vibration are provided, the first member and the first member. It is possible to secure a gap in the intersecting direction with the second member. Therefore, due to the influence of the processing accuracy and the installation accuracy of the building structure to which the first member and the second member are attached, and the own weight of the first member and the second member, the first member and the second member are subjected to the above. Even when an external force is applied that causes the viscoelastic bodies to approach each other in the intersecting directions, it is possible to prevent the viscoelastic body from being significantly deformed by contacting each of the plurality of support members with the other. become. As a result, the viscoelastic damping damper can be installed with high accuracy.
Further, since the support member includes the nut member and the bolt member, each of the above-described effects can be reliably achieved with a simple configuration.
Further, since the female threaded portion of the nut member and the male threaded portion of the bolt member are screwed together, the amount of protrusion of the support member from the first member to the second member can be increased by rotating the bolt member. It can be easily adjusted.

Further, in the first member, the first main body plate whose front and back surfaces are attached to the building structure along the vertical direction and the first main body plate are sandwiched in one direction in which the front and back surfaces face. A pair of connecting plates connected to one main body plate are provided, and the second member is attached to the building structure in a state of being arranged at different positions in the vertical direction from the first main body plate. The pair of connecting plates are provided with a second main body plate sandwiched in one direction, and the viscoelastic body connects the second main body plate to the one so as to separately connect the pair of connecting plates and the second member. A pair of the support members are arranged so as to be sandwiched in a direction, orthogonal to the one direction, and absorb the vibration energy input in the other direction along the horizontal direction, and the support member projects from the connection plate toward the second member. May be good.

In this case, since the support member projects from the connecting plate toward the second member in the one direction, the vibration energy that causes the first member and the second member to be relatively displaced in the other direction is transferred to the connecting plate and the second member. It can be absorbed by the viscoelastic body with the gap in one direction secured between the two. That is, even if a force is applied to the viscoelastic vibration damping damper to bring the connecting plate and the second member close to each other in the one direction, the thickness dimension of the viscoelastic body can be secured.

Further, the support member may be disposed separately on the connecting outermost peripheries definitive the plate.
In this case, since the support member is disposed to each other on the outer peripheral edge definitive connection plate, between the connection plate and the second member over a wide range, to be capable of ensuring the direction of the gap Become. Therefore, it is possible to effectively suppress the viscoelastic body from being greatly deformed.

Further, the support members may be separately arranged at positions facing each other in the other direction.
In this case, since the support members are separately arranged at positions facing each other in the other direction, the connecting plate and the second member are located on one side of the creeping direction on one side in the horizontal direction. It is possible to regulate the relative displacement of the portions located on the other side so as to approach each other while separating them, and it is possible to surely suppress the viscoelastic body from being significantly deformed.

Further, the viscoelastic vibration damping damper according to the second aspect of the present invention has a long shape and connects the first member and the second member to be attached to the building structure, and the first member and the second member. A viscoelastic body that absorbs vibration energy input from the building structure and a viscoelastic body that protrudes from the first member in a direction intersecting the direction in which the viscoelastic body suppresses vibration, and is formed on the second member. A plurality of support members that slide in the vibration-suppressing direction are provided, and the first member is inserted inside the tubular second member, and the first member is an inner surface of the second member. In addition, one end of the first member in the longitudinal direction and the other end of the second member in the longitudinal direction, which are arranged via the viscoelastic body, are separately attached to the building structure. Attached, the support member projects from the outer surface of the first member toward the inner surface of the second member, and the support member is inside the second member in a region where the first member is arranged. These support members are separately arranged at both ends in the longitudinal direction, and these support members are separately arranged at positions opposite to each other with the central axis of the second member in the radial direction in a cross-sectional view orthogonal to the longitudinal direction. The support member includes a nut member having a female threaded portion formed on the inner peripheral surface and a bolt member having a male threaded portion formed on the outer peripheral surface to be screwed with the female threaded portion, and the first member. the nut member is disposed, said second member above the bolt member, characterized that you slide.

According to the present invention, if the first member and the second member are attached to the building structure in a state of being inclined with respect to the vertical direction, the first member and the second member are respectively weighted in the longitudinal direction. Even if it becomes relatively easy to rotate around each end of the above, the support member can be brought into contact with the other, and the viscoelastic body has its own weight of the first member and the second member. Can be suppressed from being added. As a result, it is possible to prevent the viscoelastic body from being significantly deformed.
Further, since the support member includes the nut member and the bolt member, each of the above-described effects can be reliably achieved with a simple configuration.
Further, since the female threaded portion of the nut member and the male threaded portion of the bolt member are screwed together, the amount of protrusion of the support member from one side to the other side can be easily increased by rotating the bolt member. Can be adjusted.

According to the present invention, the viscoelastic vibration damping damper can be installed with high accuracy.

It is a side sectional view of the viscoelastic vibration damping damper which concerns on 1st Embodiment of this invention. It is a front view of the viscoelastic vibration damping damper shown in FIG. FIG. 3 is a cross-sectional view taken along the line AA of the viscoelastic vibration damping damper shown in FIG. It is an exploded view of the support member of the viscoelastic vibration damping damper shown in FIG. It is a front sectional view of the viscoelastic vibration damping damper which concerns on 2nd Embodiment of this invention. It is BB sectional view of the viscoelastic vibration damping damper shown in FIG. It is a cross-sectional view which shows the modification of the viscoelastic vibration damping damper shown in FIG.

(First Embodiment)
Hereinafter, the viscoelastic vibration damping damper 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. The viscoelastic vibration damping damper 10 according to the present embodiment is a stud type.
As shown in FIG. 1, the viscoelastic vibration damping damper 10 according to the present embodiment includes a first member 11 and a second member 12 attached to a building structure (not shown), and a first member 11 and a second member 12. It is provided with a viscoelastic body 13 that is connected and absorbs vibration energy transmitted from the building structure to the first member 11 or the second member 12.

The first member 11 has a first main body plate 11A whose front and back surfaces are attached to a building structure along a vertical direction, and a first main body plate 11A sandwiched in one direction in which the front and back surfaces face. It includes a pair of connecting plates 11B connected to 11A. Further, the second member 12 is attached to the building structure in a state where the second member 12 is arranged at a different position in the vertical direction from the first main body plate 11A, and is sandwiched between the pair of connecting plates 11B in the one direction. It has 12A.
In the following description, of the viscoelastic vibration damping damper 10, the first main body plate 11A side is referred to as the lower side, and the second main body plate 12A side is referred to as the upper side. Further, the one direction is referred to as a plate thickness direction, and the direction along the front and back surfaces of the first main body plate 11A and the second main body plate 12A is referred to as a creepage direction. In addition, the other direction orthogonal to the plate thickness direction and along the horizontal direction is called the left-right direction.

As shown in FIG. 2, the first main body plate 11A and the second main body plate 12A have a rectangular shape in which a pair of sides extend in the left-right direction and the remaining pair of sides extend in the up-down direction when viewed from the plate thickness direction. .. The first main body plate 11A and the second main body plate 12A face each other in the vertical direction.
The sizes of the first main body plate 11A and the second main body plate 12A in the left-right direction are the same as each other. The positions of the first main body plate 11A and the second main body plate 12A in the left-right direction coincide with each other. The thickness dimensions of the first main body plate 11A and the second main body plate 12A are the same as each other.

At both ends of the first main body plate 11A and the second main body plate 12A in the left-right direction, the front and back surfaces face the left-right direction, and the front and back surfaces project from the first main body plate 11A and the second main body plate 12A in both directions in the plate thickness direction. , A pair of side plates 16a and 16b, respectively, are arranged separately.
The side plates 16a and 16b have a rectangular shape in which a pair of sides extend in the plate thickness direction and the remaining pair of sides extend in the vertical direction when viewed from the left and right directions. The sizes of the side plates 16a and 16b in the plate thickness direction are the same as each other. The positions of the side plates 16a and 16b in the plate thickness direction coincide with each other. The thickness dimensions of the side plates 16a and 16b are the same as each other.

As shown in FIG. 3, the thickness dimensions of the side plates 16a and 16b are larger than the thickness dimensions of the first main body plate 11A and the second main body plate 12A.
As shown in FIG. 2, mounting holes 14a and 14b used for mounting on a building structure are spaced apart from each other in the left-right direction at the lower end of the first main body plate 11A and the upper end of the second main body plate 12A, respectively. There are multiple arrangements.

As shown in FIG. 1, a pair of connecting plates 11B are arranged on the first main body plate 11A so as to sandwich the first main body plate 11A and the second main body plate 12A in the plate thickness direction. The connecting plate 11B has a rectangular shape in which a pair of sides extend in the left-right direction and the remaining pair of sides extend in the up-down direction when viewed from the plate thickness direction.
The connection plate 11B is arranged on the first main body plate 11A and the second main body plate 12A so as to extend in the vertical direction.

As shown in FIG. 2, the size of the connecting plate 11B in the left-right direction is smaller than the size of the first main body plate 11A in the left-right direction. The position of the central portion of the connecting plate 11B in the left-right direction coincides with the position of the central portion of the first main body plate 11A in the left-right direction. As shown in FIG. 1, the upper end of the connecting plate 11B is located below the mounting hole 14b of the second main body plate 12A, and the lower end of the connecting plate 11B is above the mounting hole 14a of the first member 11. Is located in.

The pair of connecting plates 11B and the first main body plate 11A are connected via a connecting member (not shown). A plurality of through holes 14c that communicate with each other in the plate thickness direction are formed at the lower end of the connection plate 11B and the upper end of the first main body plate 11A, respectively, and the connecting member is a pair of connection plates 11B and the first main body. The plate 11A is integrally penetrated through the through hole 14c.
A filler plate 17 as a spacer is arranged between the first main body plate 11A and the connection plate 11B. The filler plate 17 is arranged between the first main body plate 11A and the connecting plate 11B.

The filler plate 17 is a plate-shaped member made of a rolled steel material (SS material) for general structure. The filler plate 17 is formed with a plurality of communication holes that communicate with the through holes 14c and into which the connecting member is integrally inserted. The size of the filler plate 17 in the left-right direction is the same as the size of the connection plate 11B in the left-right direction. The position of the filler plate 17 in the left-right direction coincides with the position of the connection plate 11B in the left-right direction.

The second member 12 includes a connecting plate 12B whose front and back surfaces face in the plate thickness direction. A pair of connecting plates 12B are arranged so as to sandwich the second main body plate 12A and the pair of connecting plates 11B in the plate thickness direction.
As shown in FIG. 2, the connecting plate 12B has a rectangular shape in which a pair of sides extend in the left-right direction and the remaining pair of sides extend in the up-down direction when viewed from the plate thickness direction. The connecting plate 12B is arranged on the connecting plate 11B and the second main body plate 12A so as to extend in the vertical direction.

The size of the connecting plate 12B in the left-right direction is the same as the size of the connecting plate 11B in the left-right direction. The horizontal position of the connecting plate 12B coincides with the horizontal position of the connecting plate 11B. The upper end of the connecting plate 12B is located below the mounting hole 14b of the second main body plate 12A and above the upper end of the connecting plate 11B. The lower end of the connecting plate 12B coincides with the lower end of the second main body plate 12A in the vertical direction.

On the front and back surfaces of the connecting plate 12B facing outward in the plate thickness direction, two ribs 16c extending in the vertical direction are arranged at intervals in the horizontal direction. The rib 16c protrudes from the surface of the connecting plate 12B in the plate thickness direction.
As shown in FIG. 1, the connecting plate 12B and the second main body plate 12A are connected to each other via a plurality of connecting members. A plurality of through holes 14d that communicate with each other in the plate thickness direction are formed in the upper end portion and the second member of the connecting plate 12B, respectively. The connecting member integrally penetrates the pair of connecting plates 12B and the second main body plate 12A through the through hole 14d.
A filler plate 18 as a spacer is arranged between the connecting plate 12B and the second main body plate 12A. The filler plate 18 is arranged at the upper end portion between the connecting plate 12B and the second main body plate 12A.

The filler plate 18 is a plate-shaped member made of a rolled steel material (SS material) for general structure. The filler plate 18 is formed with a plurality of communication holes that communicate with the through holes 14d and into which the connecting member is integrally inserted. The size of the filler plate 18 in the left-right direction is the same as the size of the connecting plate 12B in the left-right direction. The position of the filler plate 18 in the left-right direction coincides with the position of the connecting plate 12B in the left-right direction.

The viscoelastic body 13 is a plate-shaped member formed of, for example, a rubber material or an elastomer.
The viscoelastic body 13 is arranged in pairs with the second main body plate 12A sandwiched in the plate thickness direction so as to connect the pair of connecting plates 11B and the second member 12 separately, and receives the vibration energy input in the left-right direction. Absorb.
The viscoelastic body 13 is arranged on the connecting plate 11B. The viscoelastic body 13 is separately disposed on the front and back surfaces of the pair of connecting plates 11B, and is disposed between the connecting plate 12B and the connecting plate 11B, and between the connecting plate 11B and the second main body plate 12A, respectively. ing.

The lower end of the viscoelastic body 13 is located above the lower end of the second main body plate 12A, and the upper end of the viscoelastic body 13 is located below the upper end of the connecting plate 11B. The position of the central portion of the viscoelastic body 13 in the left-right direction coincides with the position of the central portion of the connecting plate 11B in the left-right direction. The size of the viscoelastic body 13 in the left-right direction is smaller than the size of the connecting plate 11B in the left-right direction.

Then, in the present embodiment, as shown in FIG. 3, the viscoelastic damping damper 10 is in a direction in which the viscoelastic body 13 intersects the vibration damping direction from at least one of the first member 11 and the second member 12. It is provided with a plurality of support members 19 that project toward and slide on the other.
In the illustrated example, the support member 19 is arranged on the connection plate 11B in the first main body plate 11A. The support member 19 projects in the plate thickness direction orthogonal to the creepage direction and slides on the second main body plate 12A. The support member 19 is arranged at the center of the viscoelastic vibration damping damper 10 in the vertical direction. The support member 19 may be arranged so as to be displaced in the vertical direction from the central portion in the vertical direction.

Further, in the present embodiment, the support member 19 is separately arranged on the outer peripheral edge portion of either the connection plate 11B or the second member 12. In the illustrated example, the support members 19 are separately arranged at positions facing each other with the connection plate 11B sandwiched in the left-right direction on the outer peripheral edge portion of the connection plate 11B. Further, the support members 19 are arranged separately in pairs with the second main body plate 12A sandwiched in the plate thickness direction. The support members 19 may be separately arranged at positions facing each other with the second main body plate 12A sandwiched in the left-right direction on the outer peripheral edge portion of the second main body plate 12A.

Further, in the present embodiment, as shown in FIG. 4, the support member 19 is a bolt having a nut member 19a having a female threaded portion formed on the inner peripheral surface and a male threaded portion formed on the outer peripheral surface to be screwed with the female threaded portion. A member 19b and a member 19b are provided. A nut member 19a is arranged on at least one of the first main body plate 11A and the second main body plate 12A, and the bolt member 19b slides on the other.
In the illustrated example, the nut member 19a is arranged on the connection plate 11B of the first main body plate 11A, and the bolt member 19b is when the first main body plate 11A and the second main body plate 12A are relatively displaced in the creeping direction. In addition, it slides on the second main body plate 12A. The nut member 19a may be arranged on the second main body plate 12A, and the bolt member 19b may slide on the connection plate 11B.

The nut member 19a is made of a metal material. The outer peripheral surface of the nut member 19a is fixed to the outer peripheral edge of the connecting plate 11B by, for example, welding. The bolt member 19b is screwed to the nut member 19a. The bolt member 19b is made of a synthetic resin material, and a material having good slidability such as polyacetal (registered trademark: Duracon) can be used.
The material for forming the nut member 19a and the bolt member 19b is not limited to these, and the nut member 19a may be formed of a synthetic resin material or the like, or the bolt member 19b may be formed of a metal material or the like.

As described above, according to the viscoelastic vibration damping damper 10 according to the present embodiment, the viscoelastic vibration damping damper 10 projects from the connection plate 11B of the first member 11 in the plate thickness direction and protrudes on the second main body plate 12A of the second member 12. Since the viscoelastic body 13 is provided with the support member 19 that slides in the vibration damping direction, a gap in the plate thickness direction can be secured between the connection plate 11B and the second main body plate 12A. Therefore, due to the influence of the processing accuracy and installation accuracy of the building structure to which the connection plate 11B and the second main body plate 12A are attached, and the own weight of the connection plate 11B and the second main body plate 12A, the connection plate 11B and the second main body plate 12A are temporarily attached. Even when an external force is applied to the main body plate 12A so as to bring them closer to each other in the plate thickness direction, it is possible to prevent the viscoelastic body 13 from being significantly deformed due to the support member 19 coming into contact with the other. Will be possible. As a result, the installation accuracy of the viscoelastic vibration damping damper 10 can be stabilized.

Further, since the support member 19 projects from the connection plate 11B toward the second main body plate 12A in the plate thickness direction, the first member 11 and the second main body plate 12A are relative to each other in the creepage direction along the front and back surfaces. The vibration energy to be displaced can be absorbed by the viscoelastic body 13 in a state where a gap in the plate thickness direction is secured between the connection plate 11B and the second main body plate 12A. That is, even if a force is applied to the viscoelastic vibration damping damper 10 to bring the connecting plate 11B and the second main body plate 12A closer to each other in the plate thickness direction, the thickness dimension of the viscoelastic body 13 can be secured.

Further, since the support member 19 is separately arranged on the outer peripheral edge portion of the connection plate 11B, a gap in the plate thickness direction is secured over a wide range between the connection plate 11B and the second main body plate 12A. Becomes possible. Therefore, it is possible to effectively prevent the viscoelastic body 13 from being significantly deformed.

Further, since the support members 19 are separately arranged at positions facing each other in the left-right direction, the portion where the connection plate 11B and the second main body plate 12A are located on one side in the left-right direction in the creepage direction. It is possible to regulate the relative displacement of the portions located on the other side so as to be close to each other while separating them from each other, and it is possible to surely suppress the viscoelastic body 13 from being significantly deformed.

Further, since the support member 19 includes the nut member 19a and the bolt member 19b, the above-mentioned effects can be reliably achieved with a simple configuration.
Further, since the female threaded portion of the nut member 19a and the male threaded portion of the bolt member 19b are screwed together, the support member directed from the connection plate 11B to the second main body plate 12A by rotating the bolt member 19b. The amount of protrusion of 19 can be easily adjusted.

(Second Embodiment)
Next, the viscoelastic vibration damping damper 20 according to the second embodiment of the present invention will be described with reference to FIGS. 5 and 6.
In the second embodiment, the same parts as the components in the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and only the different points will be described.

As shown in FIG. 5, in the viscoelastic vibration damping damper 20 according to the present embodiment, the first member 21 and the second member 22 have a long shape, and the second member 22 has a tubular shape. The viscoelastic vibration damping damper 20 is a brace type.
In the following description, the direction along the central axis O of the second member 22 is referred to as the longitudinal direction, and the direction intersecting the central axis O when viewed from the longitudinal direction is referred to as the radial direction.

As shown in FIG. 6, the first member 21 is made of H-steel and has an H-shape in a cross-sectional view orthogonal to the longitudinal direction. The first member 21 has a pair of flanges 21a extending in the radial direction and facing each other in the radial direction, and a web 21b extending in the radial direction and connecting the central portions of these flanges 21a. It has. The thickness dimension of the flange 21a is larger than the thickness dimension of the web 21b. As shown in FIG. 5, a plurality of mounting holes 21c to be attached to the building structure are formed at the end portion E1 on one side in the longitudinal direction of the flange 21a.

As shown in FIG. 6, the second member 22 has a rectangular shape in the cross-sectional view. The second member 22 is arranged so as to face each other in the radial direction, and a pair of split pipes 22a surrounding the first member 21 from the outside in the radial direction and a pair of outer plates 22b connecting the pair of split pipes 22a to each other. And have. The pair of split pipes 22a face each other in the radial direction in which the web 21b extends in the cross-sectional view. The dividing pipe 22a and the outer plate 22b are formed of, for example, a metal material.
The split pipe 22a has a C-shape that opens inward in the radial direction in the cross-sectional view. As shown in FIG. 5, a plurality of mounting holes 22c to be attached to the building structure are formed at the other end E4 of the split pipe 22a in the longitudinal direction.

As shown in FIGS. 5 and 6, the first member 21 is inserted inside the second member 22, and the first member 21 is arranged on the inner surface of the second member 22 via the viscoelastic body 23. ing. The one-sided end E1 in the longitudinal direction of the first member 21 projects outward from the one-sided end E3 of the second member 22. The one-sided end E1 of the first member 21 does not have to protrude outward from the one-sided end E3 of the second member 22.
Of the inner peripheral surfaces of the pair of split pipes 22a, the inner bottom surfaces 22d facing each other in the radial direction face the outer surface 21d of the surface of the flange 21a of the first member 21 facing outward in the radial direction.

The viscoelastic body 23 is a plate-shaped member formed of, for example, a rubber material or an elastomer. The viscoelastic body 23 is separately arranged inside the second member 22 at a position sandwiching the central axis O in the radial direction. The viscoelastic body 23 is arranged in a radial gap between the inner bottom surface 22d of the split pipe 22a and the outer surface 21d of the flange 21a.
Further, as shown in FIG. 5, the viscoelastic body 23 is a portion of the gap where one end E3 in the longitudinal direction of the second member 22 is located, and the other side in the longitudinal direction of the first member 21. It is separately arranged at the portion where the end portion E2 of the above is located. The viscoelastic body 23 is arranged inside the second member 22, and exhibits a rectangular shape that is long in the longitudinal direction when the pair of flanges 21a are viewed from the directions facing each other.
The thickness dimension of the viscoelastic body 23 is smaller than the thickness dimension of the web 21b in the first member 21.

Then, in the present embodiment, the support member 29 projects to either one of the outer surface of the first member 21 and the inner surface of the second member 22 toward the other.
In the illustrated example, the support member 29 is arranged on the outer surface of the first member 21, projects toward the inner surface of the second member 22, and slides on the inner surface of the second member 22. Therefore, the support member 29 projects in a direction intersecting the longitudinal direction in which the viscoelastic body 23 controls vibration. The support member 29 may be arranged on the inner surface of the second member 22 and may slide on the outer surface of the first member 21.

The support members 29 are separately arranged at both ends in the longitudinal direction in the region where the first member 21 is arranged inside the second member 22. In the illustrated example, the support member 29 is located at the other end E2 in the longitudinal direction of the first member 21 and the one end E3 of the first member 21 in the longitudinal direction of the second member 22. It is arranged separately in each part.
Further, as shown in FIG. 6, the support members 29 are separately arranged at positions opposite to each other with the central axis O in the radial direction in the cross-sectional view of the viscoelastic vibration damping damper 20.

The first member 21 is provided with a fixing plate 21e for fixing the support member 29 to the outer surface of the first member 21. The fixing plate 21e is arranged in a recess surrounded by a pair of flanges 21a and a web 21b in the first member 21. The fixing plate 21e is fixed to the inner surface of the pair of flanges 21a and the outer surface of the web 21b by welding or the like.

The fixing plate 21e has a rectangular shape in which a pair of sides extend in a direction in which the flange 21a extends and the remaining pair of sides extend in a direction in which the web 21b extends in the cross-sectional view. In the cross-sectional view, a bulging portion 21f that bulges toward the outside of the recess is formed at the central portion of the fixing plate 21e in the direction in which the web 21b extends.
A nut member 29a is fixed to the bulging portion 21f. The outer peripheral surface of the nut member 29a is fixed to the inner side surface of the bulging portion 21f of the fixing plate 21e facing inward in the longitudinal direction.
The nut member 29a is fixed to the fixing plate 21e by, for example, welding. The support member 29 may be arranged on either the outer surface of the first member 21 or the inner surface of the second member 22 without the intervention of the fixing plate 21e.

The nut member 29a opens in the direction in which the flange 21a extends in the cross-sectional view. A bolt member 29b is screwed to the nut member 29a. The bolt member 29b projects from the fixing plate 21e of the first member 21 toward the outside of the recess. That is, in the present embodiment, the support member 29 projects in the direction in which the viscoelastic body 23 extends in the cross-sectional view.

The tip of the bolt member 29b is in contact with the back surface of the outer surface plate 22b of the second member 22 facing inward in the radial direction. The bolt member 29b slides on the back surface of the outer plate 22b when the first member 21 and the second member 22 are relatively displaced in the longitudinal direction. The nut member 29a may be arranged on the second member 22, and the bolt member 29b may slide on the outer surface of the first member 21.

The viscoelastic vibration damping damper 20 is attached to a building structure (not shown) in a state of being inclined with respect to the vertical direction. At this time, the first member 21 is attached to the building structure in a state where the one-sided end in the longitudinal direction is located below and the other end of the second member 22 in the longitudinal direction is located above.

As described above, according to the viscoelastic vibration damping damper 20 according to the present embodiment, the support member 29 projects in the direction intersecting the longitudinal direction, similarly to the viscoelastic vibration damping damper 10 according to the first embodiment. Therefore, it is possible to secure a gap between the first member 21 and the second member 22 in the intersecting direction. This makes it possible to prevent the first member 21 and the second member 22 from coming into contact with each other and causing the viscoelastic body 23 to be significantly deformed, thereby stabilizing the installation accuracy of the viscoelastic damping damper 20. Can be done.

Further, if the first member 21 and the second member 22 are attached to the building structure in a state of being inclined with respect to the vertical direction, the first member 21 and the second member 22 are respectively weighted in the longitudinal direction. The support member 29 can be brought into contact with the second member 22 even if it becomes relatively easy to rotate around each end of the viscoelastic body 23, and the viscoelastic body 23 has the first member 21 and the support member 29. It is possible to suppress the addition of the own weight of the second member 22. As a result, it is possible to prevent the viscoelastic body 23 from being significantly deformed.

Next, a modified example of the viscoelastic vibration damping damper 20 will be described.
As shown in FIG. 7, in the modified viscoelastic vibration damping damper 30, a pair of viscoelastic damping dampers 30 are arranged on the outside of the second member 22 in the radial direction so as to face each other in the radial direction and surround the second member 22 in the radial direction. The surrounding division pipe 31 is arranged. The pair of surrounding dividing pipes 31 face each other in the radial direction in which the web 21b extends in the cross-sectional view. The surrounding dividing pipe 31 is formed of, for example, a metal material or the like. The surrounding split pipe 31 has a U-shape that opens inward in the radial direction in the cross-sectional view.

Of the outer surface of the surrounding split pipe 31, the inner bottom surface 31a facing inward in the radial direction is provided with a radial gap from the outer bottom surface 22e of the outer surface of the split pipe 22a in the second member 22 facing outward in the radial direction. Are facing each other.
A pair of viscoelastic bodies 23 are separately arranged in the radial gap between the surrounding dividing pipe 31 and the second member 22 with the central axis O in between.

The surrounding split pipe 31 is connected to one end of the first member 21 by a connecting means (not shown). Therefore, when an external force along the longitudinal direction is applied to the viscoelastic vibration damping damper 30, the surrounding dividing pipe 31 is displaced in the longitudinal direction together with the first member 21.
In this way, when the surrounding split pipe 31 is arranged in the viscoelastic vibration damping damper 30, the number of viscoelastic bodies 23 arranged in the viscoelastic vibration damping damper 30 can be increased, and the viscoelasticity can be increased. The vibration damping performance of the vibration damping damper 30 can be improved.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, in the first embodiment and the second embodiment, the support members 19 and 29 include nut members 19a and 29a and bolt members 19b and 29b, and the bolt members 19b and 29b are first members 21 and second. Although the configuration is shown in which the member 22 is arranged on at least one of the members 22, the present invention is not limited to this aspect. The support member may be composed of an integral part.

Further, in the first embodiment, the second member 12 includes a pair of connecting plates 12B having front and back surfaces facing in the plate thickness direction and sandwiching the second main body plate 12A and the pair of connecting plates 11B in the plate thickness direction. Although the configuration is shown, it is not limited to such an aspect. The second member may not include the connecting plate 12B.

Further, in the first embodiment, the support member 19 protrudes from the connection plate 11B of the first member 11 in the plate thickness direction and slides on the second main body plate 12A. The mode is not limited to The support member may project from the connecting plate 11B in the plate thickness direction and slide on the connecting plate 12B.
Further, the support member may protrude from the second main body plate 12A of the second member 12 in the plate thickness direction and slide on the connecting plate 11B, or may slide from the connecting plate 12B of the second member 12 in the plate thickness direction. It may protrude toward the surface and slide on the connection plate 11B.
Furthermore, the viscoelastic damping damper may include a plurality of these support members.

Further, in the first embodiment, the support members 19 are separately arranged at positions facing each other with the connection plate 11B sandwiched in the horizontal direction in the outer peripheral edge portion of the connection plate 11B along the front and back surfaces. Although the configuration is shown, it is not limited to such an aspect. The support member may be arranged on the outer peripheral edge portion of any one of the second main body plate 12A and the connecting plate 12B of the second member 22.

Further, although the support members are separately arranged at positions facing each other in the left-right direction, the present invention is not limited to such a mode. The support members may be separately arranged at positions facing each other in the creepage direction. For example, four may be arranged so as to face each other in the vertical direction and the horizontal direction.
Further, in the first embodiment, the configuration in which a pair of support members 19 are arranged is shown, but the present invention is not limited to such a mode, and three or more support members may be arranged.

Further, in the second embodiment, the viscoelastic vibration damping damper 20 has been shown to be attached to a building structure in a state of being inclined in the vertical direction, but the present invention is not limited to such a mode. The viscoelastic damping damper may be mounted on the building structure with the first member placed above and the second member placed below, along the vertical direction, or along the horizontal or other direction. May be done.

Further, in the second embodiment, the support member 29 shows a configuration in which the viscoelastic body 23 protrudes along the extending direction in a cross-sectional view orthogonal to the longitudinal direction, but is limited to such an embodiment. Absent. The support member 29 may project in a direction orthogonal to the direction in which the viscoelastic body 23 extends in the cross-sectional view.

In addition, it is possible to replace the components in the embodiment with well-known components as appropriate without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

10, 20 Viscoelastic damping damper 11, 21 1st member 11A 1st main body plate 11B Connection plate 12, 22 2nd member 12A 2nd main body plate 13, 23 Viscoelastic body 19, 29 Support member 19a, 29a Nut member 19b , 29b Bolt member

Claims (5)

The first and second members attached to the building structure,
And connecting the second member and the first member, and the viscoelastic body for absorbing vibration energy input from the building structure, Bei example, said first member through the viscoelastic body first A viscoelastic vibration damping damper configured to sandwich two members in the plate thickness direction .
A plurality of support members having a nut member having a female threaded portion formed on an inner peripheral surface and arranged on the first member and a bolt member having a male threaded portion formed on an outer peripheral surface to be screwed with the female threaded portion are provided. ,
The viscoelastic body is characterized in that the bolt member protrudes from the first member in a direction intersecting the vibration damping direction of the viscoelastic body and slides on the second member in the vibration damping direction. Damping damper. The first main body is formed by sandwiching a first main body plate whose front and back surfaces are attached to the building structure along a vertical direction and the first main body plate in one direction in which the front and back surfaces face. With a pair of connecting plates connected to the plates,
The second member is attached to the building structure in a state where the second member is arranged at a different position in the vertical direction from the first main body plate, and the second main body plate sandwiched between the pair of connecting plates in the one direction is attached. Prepare,
The viscoelastic bodies are arranged in pairs with the second main body plate sandwiched in the one direction so as to connect the pair of connecting plates and the second member separately, orthogonal to the one direction, and in the horizontal direction. Absorbs the vibration energy input in the other direction along the
The viscoelastic vibration damping damper according to claim 1, wherein the support member projects from the connection plate toward the second member . Wherein the support member, the viscoelastic damping damper according to claim 2, characterized in that disposed on the respective other on the outer peripheral edge definitive to the connection plate. The viscoelastic vibration damping damper according to claim 2 or 3, wherein the support members are separately arranged at positions facing each other in the other direction. The first and second members, which have a long shape and are attached to building structures,
A viscoelastic body that connects the first member and the second member and absorbs vibration energy input from the building structure.
A plurality of support members that project from the first member in a direction intersecting the vibration-damping direction of the viscoelastic body and slide on the second member in the vibration-damping direction.
Prepare
The first member is inserted inside the tubular second member, and the first member is arranged on the inner surface of the second member via the viscoelastic body.
One end of the first member in the longitudinal direction and the other end of the second member in the longitudinal direction are separately attached to the building structure.
The support member projects from the outer surface of the first member toward the inner surface of the second member .
The support members are separately disposed inside the second member at both ends in the longitudinal direction in the region where the first member is arranged.
These support members are separately arranged at positions opposite to each other with the central axis of the second member in the radial direction in a cross-sectional view orthogonal to the longitudinal direction .
The support member includes a nut member having a female threaded portion formed on an inner peripheral surface and a bolt member having a male threaded portion formed on an outer peripheral surface to be screwed with the female threaded portion.
Wherein the nut member is disposed in the first member, the viscoelastic damping dampers the second member upper said bolt member is characterized that you slide.

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