JP2009155857A - Vibration control structure of building, and joint member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration control structure of a building, which enhances a vibration control effect by effectively transferring vibrational energy to a viscoelastic body arranged in a joint section between wall panels during earthquakes. <P>SOLUTION: In this vibration control structure of the building, joint members are mounted along the joint sections among the plurality of wall panels which constitute the building, respectively. In the joint member, a pair of holding members, which is composed of supporting surfaces, arranged in such a manner as to be almost flush with each other, and opposed bonding planes is integrated together by making the bonding planes face each other and using the viscoelastic body arranged between the bonding planes. The viscoelastic body is mounted on the wall panel in a position along the joint section. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vibration damping structure for a building and a joint member used for the structure.

Up to now, for the purpose of vibration control of buildings, a plurality of wall panels are attached adjacent to each other so as to be movable in the joint length direction, and viscoelastic bodies are attached to the joints between the wall panels. There are techniques described in JP-A-11-62058 (Patent Document 1) and JP-A-2000-54679 (Patent Document 2).
The vibration damping structure of a building described in Patent Document 1 is a technique in which a viscoelastic body is narrowly attached to a joint portion of a long side edge surface of a wall panel.
Moreover, the vibration damping structure of a building described in Patent Document 2 has a viscoelastic body so that the holding member that holds the viscoelastic body in a direction substantially parallel to the wall panel surface straddles the joint portion of the wall panel. It is a technology that has been held.

As described in Patent Documents 1 and 2, these techniques are used in the event of an earthquake by attaching a plurality of wall panels adjacent to each other so as to be movable and arranging a viscoelastic body on the joint between the wall panels. The relative displacement in the joint length direction is generated between the adjacent wall panels, and vibration energy is transmitted to the viscoelastic body, so that the damping effect is exerted by the internal friction of the viscoelastic body.
JP-A-11-62058 JP 2000-54679 A

However, in the technique of Patent Document 1, since the viscoelastic body is directly bonded to the long side edge surface of the wall panel, only sufficient vibration energy is transmitted to the viscoelastic body depending on the properties of the long side edge surface of the wall panel. It is difficult to ensure the adhesive strength of the adhesive and the quality control of the bonding work is difficult.
In the technique of Patent Document 2, the holding member that holds the viscoelastic body in a direction substantially parallel to the wall panel surface holds the viscoelastic body so as to straddle the joint portion of the wall panel. If there is no level difference between the surfaces of the wall panel to be designed, the adhesive force sufficient to transmit sufficient vibration energy to the viscoelastic body can be secured if it is designed to ensure the adhesive force between the holding member and the viscoelastic body. There is no problem. However, when there is a warp in the wall panel and there is a step size between adjacent wall panel surfaces, the viscoelastic body is held by the holding member in a direction substantially parallel to the wall panel surface. When a viscoelastic body is to be provided with a predetermined thickness, a compressive force or tensile force in the vertical direction is generated on the surface of the viscoelastic body according to the step size between the surfaces of adjacent wall panels. The thickness of the viscoelastic body also varies. When compression is applied, the fluctuation rate is particularly large. For example, in the case of a viscoelastic body having a thickness of 2 mm, if the step size is 2 mm or more, the viscoelastic body cannot be compressed by 2 mm or more, and the holding member It may be bent and peeled off from the viscoelastic body. Also, when a tensile force acts, generally, there is a possibility that the viscoelastic body is easily broken or the adhesive surface is ruptured due to the limit strain as compared with the case of the same degree of shear deformation rate. In any case, there is a problem that it is difficult to ensure the required performance in terms of design.

Furthermore, when the steps of adjacent wall panels are not uniform and the unevenness fluctuates in the joint length direction, there is a problem that it is difficult to follow the change of the steps.
The present invention solves the above-mentioned problems, and its object is to effectively transmit vibration energy to a viscoelastic body arranged at the joint between the wall panels in the event of an earthquake, thereby achieving a damping effect. It is to provide an enhanced building vibration control structure.
In addition, it is easy to secure the adhesive force between the holding member and the viscoelastic body, and at the time of construction, the generation of unnecessary out-of-plane compressive force and tensile force is suppressed. The object is to avoid fluctuations in the thickness, to prevent the viscoelastic body from peeling off from the holding member, and to exhibit the required vibration damping performance.

In the first structure of the vibration damping structure for a building according to the present invention for achieving the above object, joint members are attached along joint portions of a plurality of wall panels constituting the building, and the joint member is A pair of holding members each consisting of a support surface arranged in substantially the same plane and an adhesive surface facing each other are integrated by a viscoelastic body disposed between the adhesive surfaces facing each other, and the viscoelastic body is a joint. It is attached to the wall panel at a position along the section.
The second structure of the building vibration control structure according to the present invention is characterized in that, in the building vibration control structure of the first structure, the adhesive surface is perpendicular to the wall panel surface.
Moreover, the 3rd structure of the damping structure of the building which concerns on this invention is a damping structure of the building of the 1st or 2nd structure, forms a carved part in the joint part of an adjacent wall panel, and opposes the said An adhesive surface and a viscoelastic body between the adhesive surfaces are arranged in the engraved portion.

Further, the fourth structure of the building vibration control structure according to the present invention is the building vibration control structure of the first to third structures, wherein the holding member is interposed via an anchor member that penetrates the support surface without a gap. Is provided on the wall panel.
Furthermore, the fifth structure of the building damping structure according to the present invention is the building damping structure according to the first to third structures, wherein the support surface is provided with a through hole, and the anchor member penetrates the through hole. The holding member is provided on the wall panel via the anchor, and the anchor member and the support surface are directly or indirectly welded.
Next, the first structure of the joint member according to the present invention is integrated by a viscoelastic body between a pair of holding members having a pair of holding members having a supporting surface and a bonding surface facing each other, which are arranged on substantially the same surface. It is characterized by.
According to a second configuration of the joint member of the present invention, in the joint member of the first configuration, the adhesive surface is perpendicular to the support surface.

  According to the 1st structure of the damping structure of the building which concerns on Claim 1 of this invention, the joint member is attached along the joint part of the several wall panel which comprises a building, This joint member is substantially A pair of holding members composed of a support surface arranged on the same surface and an adhesive surface facing each other are integrated by a viscoelastic body disposed between them with the adhesive surfaces facing each other, and the viscoelastic body is a joint portion. Because the wall panel is warped at a position along the wall surface, even if the wall panel is warped, even if there is a step size between the adjacent wall panel surfaces, the adhesive surface that the viscoelastic body faces Therefore, the compressive force in the direction perpendicular to the surface of the viscoelastic body corresponding to the step size between the surfaces of the adjacent wall panels is applied to the viscoelastic body that is to be provided with a predetermined thickness to exhibit the required performance. Or as a result, it is difficult to generate a tensile force. Avoiding the thickness of the elastic body to change, thereby facilitating the securing of the adhesive force between the holding member and the viscoelastic body, it is easy to exhibit the required performance.

Furthermore, even if the stepped dimension between adjacent wall panels is particularly large, it is easy to avoid that the tensile force is particularly large, and it is easy to avoid that the viscoelastic body is peeled off from the holding member. .
By virtue of the effects of these inventions, it is possible to provide a vibration control structure for a building that effectively transmits vibration energy to a viscoelastic body arranged at the joint between the wall panels in the event of an earthquake, thereby enhancing the vibration control effect. I can do it.
The vertical (90 degrees) direction of the direction in which the adhesive surface facing the wall panel surface is arranged is most effective. The closer the direction is to the horizontal direction, the smaller the effect is. An effect corresponding to an angle based on the vertical component with respect to the surface can be exhibited. The direction in which the adhesive surface facing the wall panel surface is arranged is preferably 30 degrees or more and 150 degrees or less, preferably 45 degrees or more and 135 degrees or less, and further set to a vertical (90 degrees) direction. Is most preferred.

It should be noted that the direction in which the adhesive surface facing the wall panel surface is arranged is a direction in which the parallel component parallel to the wall panel surface and the vertical component perpendicular to the wall panel surface are combined in the vector.
In the first configuration, it is convenient and preferable that the holding member is formed by bending a plate. However, if the supporting surface and the adhesive surface can be configured such as cutting out a shape steel, the holding member is limited to these. It is not something.
Further, the thickness of the viscoelastic body provided by bonding between the opposed adhesive surfaces is not particularly limited, but it depends on the mechanical properties of the viscoelastic body and is assumed to be the surface of the adjacent wall panel. It may be determined appropriately considering mutual step size and relative displacement in the joint length direction between adjacent wall panels due to locking or sliding (sway), but there is almost no step size between surfaces of adjacent wall panels. In some cases, a thickness of about 0.5 mm to 4 mm is considered a suitable range. Further, for example, when the assumed relative displacement in the joint length direction between adjacent wall panels is 6 mm and the allowable shear strain is 300%, the thickness of the viscoelastic body is set to 2 mm or more. Is good.

In the first configuration, the wall panel corresponds to a lightweight cellular concrete panel, an extrusion-molded cement panel, a metal composite sandwich panel, etc., and has a panel shape, so that a plurality of wall panels are movable in the joint length direction. What is necessary is just to be attached adjacent to.
According to the second configuration of the vibration damping structure for a building according to claim 2 of the present invention, the wall panel is warped because the direction in which the adhesive surface facing the wall panel surface is arranged is the vertical direction. In some cases, even when a step dimension is generated between the surfaces of adjacent wall panels, the viscoelastic body does not generate a compressive force or tensile force in the direction perpendicular to the surface of the viscoelastic body. In addition, only the shear deformation (shear force) in the out-of-plane direction occurs with respect to the wall panel corresponding to the step difference between the surfaces of the adjacent wall panels. Even if shear deformation (shearing force) occurs, the thickness of the viscoelastic body can be provided with a predetermined thickness as designed, and thus the required damping performance can be exhibited. In this case, the direction of the shear deformation (shear force) acting on the viscoelastic body during the earthquake is the shear deformation in the out-of-plane direction with respect to the wall panel generated according to the step size between the surfaces of the adjacent wall panels ( The direction of the shearing force) is perpendicular to the direction of the joint length of the wall panel. In this sense, the direction in which the adhesive surface facing the wall panel surface is arranged is relative to the wall panel surface. Compared to the parallel direction (not including the vertical component), the impact on the damping performance is small.

Furthermore, it is easy to avoid the problem that it is difficult to follow the change in the step even when the steps of the adjacent wall panels are not uniform and the unevenness fluctuates in the joint length direction. Actually, the viscoelastic body generates an out-of-plane shearing force against the wall panel changing in the joint length direction instead of compressive force and tensile force changing in the joint length direction. However, a little bending acts on the compressive force and tensile force that fluctuate in the joint length direction, which makes it easier for the viscoelastic body to peel off than the wall panel that fluctuates in the joint length direction. In the case of the shear force in the out-of-plane direction, it is not easy to peel off.
Moreover, according to the 3rd structure of the damping structure of the building which concerns on Claim 3 of this invention, a carved part is formed in the joint part of an adjacent wall panel, and between the said adhesion surface and this adhesion surface which oppose Since the viscoelastic body is arranged in the engraved portion, the holding member including the viscoelastic body can be reduced in the dimension that squeezes out of the surface of the wall panel, so that a structure with good fit can be obtained.

Accordingly, when finishing is performed on the side of the wall panel on which the holding member including the viscoelastic body is disposed, the protruding dimension of the wall panel out of the surface is small, which is preferable. For example, if the wall panel squeeze out to about 10 mm, the gypsum board interior finish will be about 30 mm thick (for example, the GL method). In addition, the protruding part of the wall panel can be stored.
In addition, a viscoelastic body can also be arranged in the engraved part of the wall panel. Therefore, if the protruding dimensions of the wall panel out of the plane are the same, the viscoelasticity is compared with the unit length of the wall panel. The body width dimension (dimension in the wall panel thickness direction) can be increased, and a structure having a greater vibration damping effect can be obtained. For example, if a wall panel with a thickness of 100 mm has a protruding dimension of 10 mm out of the wall panel and a viscoelastic body with a width of 10 mm can be placed outside the wall panel, a 25 mm engraving is performed. If a viscoelastic body with a width of 20 mm can be arranged in the engraving, a viscoelastic body with a width of 30 mm in total can be arranged. Therefore, it is possible to provide a structure having a greater vibration damping effect.

In the third configuration, a lightweight cellular concrete panel is particularly suitable as the wall panel because of the ease of engraving in factory processing. However, it may be an extruded cement panel, a metal composite sandwich panel, or the like.
In addition, the engraving on the joint portion of the wall panel may be provided across both of the adjacent wall panels, but may be provided only on one of the wall panels. In consideration of arranging in a well-balanced manner at the center of the joint, it is preferable in terms of aesthetics to engrave both adjacent wall panels equally.
Moreover, according to the 4th structure of the vibration damping structure of the building which concerns on Claim 4 of this invention Since the said holding member was provided in the wall panel via the anchor member penetrated without a clearance gap to the said support surface, wall A structure in which in-plane misalignment between the panel and the holding member does not easily occur, and vibration energy can be effectively transmitted to the viscoelastic body disposed on the joint between the wall panels in the event of an earthquake.

Here, “anchor member that penetrates the support surface without a gap” means that the anchor member is forcibly penetrated through the non-porous support surface, or a pilot hole smaller than the shaft diameter of the anchor member is made to penetrate the anchor member. It means that. As anchor members, nails, expansion nails (such as twin nails, hit nails, etc.) that are driven by striking can be penetrated without any gaps, but screws that are capable of penetrating the support surface, such as self-tapping screws, are preferred. (Screw) is also possible. Expansion nails are most preferred when the wall panel is a lightweight cellular concrete panel.
Note that it is preferable to bond the support surface to the wall panel surface using an adhesive. It is also preferable to perform primer treatment on the wall panel surface to improve the adhesion.

Moreover, according to the 5th structure of the vibration damping structure of the building which concerns on Claim 5 of this invention, a through-hole is provided in the said support surface, and the said holding member is wall-mounted via the anchor member which penetrates this through-hole. Since the anchor member and the support surface are welded directly or indirectly to the panel, it is possible to make a structure in which in-plane misalignment between the wall panel and the holding member hardly occurs, as in the fourth configuration. It is possible to effectively transmit vibration energy to the viscoelastic bodies arranged at the joints between the panels.
Here, “an anchor member that is provided with a through-hole on a support surface and penetrates the through-hole” means that a pilot hole larger than the shaft diameter of the anchor member is opened to allow the anchor member to penetrate. As the anchor member, a bolt is conceivable, but other anchor members may be used. For example, the anchor member and the support surface may be formed by directly welding the bolt head to the support surface or indirectly welding the bolt head to the support surface via a washer or the like, thereby It is possible to make a structure in which the internal deviation hardly occurs. In this case, in order to improve the workability of the anchor member, the through hole can be a loose hole.

In the case of a lightweight cellular concrete panel, it is also possible to divert the anchor method used for the rocking construction method, such as providing an embedded nut in the wall panel in advance or fixing the O bolt with an anchor steel rod.
Note that it is preferable to bond the support surface to the wall panel surface using an adhesive. It is also preferable to perform primer treatment on the wall panel surface to improve the adhesion.
Moreover, according to the 1st structure of the joint member which concerns on Claim 6 of this invention The viscoelasticity between the adhesive surfaces which a pair of holding member which has a support surface and the adhesive surface which opposes arranged on substantially the same surface opposes each other Since it is integrated by the body, it can be used for the first to fifth configurations of the building damping structure, and in particular, easily achieve the object described in the first configuration of the building damping structure. It is possible to provide a joint member that can be used.

The vertical (90 degree) direction is the most effective in the direction in which the opposing adhesive surface is arranged with respect to the support surface arranged in substantially the same plane, and the effect becomes smaller as the direction approaches the horizontal direction. It is possible to exert an effect corresponding to the angle based on the vertical component with respect to the wall panel surface. The direction in which the adhesive surface facing the wall panel surface is arranged is preferably 30 degrees or more and 150 degrees or less, preferably 45 degrees or more and 135 degrees or less, and further set to a vertical (90 degrees) direction. The most preferable is the same as that described in the first configuration of the vibration control structure for a building.
In the first configuration of the joint member, it is convenient and preferable that the holding member is formed by bending a plate. However, if the supporting surface and the bonding surface can be configured by cutting out a shape steel or the like, these can be used. It is not limited to.

Furthermore, the thickness of the viscoelastic body that is bonded and provided between the opposing adhesive surfaces is not particularly limited, but depends on the mechanical properties of the viscoelastic body and the surface of the assumed wall panel. It may be appropriately determined in consideration of the step size, the relative displacement in the joint length direction between the wall panels due to rocking or sliding (sway), but about 0.5 mm to 4 mm is considered to be a suitable range.
Further, in the first configuration of the joint member, since it is possible to bond the viscoelastic body between the bonding surfaces in advance in a factory or the like, quality control of the bonding work is facilitated, and the reliability of bonding is increased. In the event of an earthquake, the vibration energy can be effectively transmitted to the viscoelastic bodies arranged at the joints between the wall panels, and reliability can be imparted to the vibration control structure of the building that has improved the vibration control effect.

  According to the second configuration of the joint member according to claim 7, when the joint member is attached to the wall panel, the direction in which the adhesive surface facing the wall panel surface is arranged becomes the vertical direction. Even if there is a step between the surfaces of adjacent wall panels due to warpage, the viscoelastic body will not generate a compressive or tensile force perpendicular to the surface of the viscoelastic body. Instead, only the shear deformation (shear force) in the out-of-plane direction occurs with respect to the wall panel according to the step size between the surfaces of the adjacent wall panels. Even when shear deformation (shearing force) occurs, the thickness of the viscoelastic body can be provided with a predetermined thickness as designed, and thus the required damping performance can be exhibited. In this case, the direction of the shear deformation (shear force) acting on the viscoelastic body during the earthquake is the shear deformation in the out-of-plane direction with respect to the wall panel generated according to the step size between the surfaces of the adjacent wall panels ( The direction of the shearing force) is perpendicular to the direction of the joint length of the wall panel. In this sense, the direction in which the adhesive surface facing the wall panel surface is arranged is relative to the wall panel surface. Compared to the parallel direction (not including the vertical component), the impact on the damping performance is small.

  Furthermore, it is easy to avoid the problem that it is difficult to follow the change in the step even when the steps of the adjacent wall panels are not uniform and the unevenness fluctuates in the joint length direction. Actually, the viscoelastic body generates an out-of-plane shearing force against the wall panel changing in the joint length direction instead of compressive force and tensile force changing in the joint length direction. However, a little bending acts on the compressive force and tensile force that fluctuate in the joint length direction, which makes it easier for the viscoelastic body to peel off than the wall panel that fluctuates in the joint length direction. In the case of the shear force in the out-of-plane direction, it is not easy to peel off.

Embodiments of the vibration damping structure and joint member of a building according to the present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective explanatory view showing a first embodiment of a vibration damping structure for a building according to the present invention, FIG. 2 is a perspective explanatory view showing an enlarged joint portion of the first embodiment shown in FIG. FIG. 4 is an enlarged horizontal cross-sectional explanatory view showing the joint portion of the first embodiment, and FIG. 4 is an enlarged horizontal cross-sectional explanatory view showing a state where there is a step in the joint portion of the first embodiment.
FIG. 5 is an enlarged horizontal cross-sectional explanatory view of the joint portion of the second embodiment in which a carved portion is formed in the joint portion and a viscoelastic body is disposed in the carved portion.
FIG. 6 is an enlarged view of the joint part of the third embodiment in which a carved part is formed in the joint part, and a viscoelastic body is arranged in the carved part and the viscoelastic body is arranged by squeezing out of the surface of the wall panel. FIG.
FIG. 7 is a horizontal cross-sectional explanatory view showing, in an enlarged manner, the joint portion of the fourth embodiment for explaining the direction θ in which the adhesive surface facing the wall panel surface is arranged.
FIG. 8 is a perspective explanatory view showing a third embodiment of the joint member according to the present invention.

[First example of vibration control structure of a building]
1-4, the 1st Example of the damping structure of a building is described. The first embodiment is an example of a steel structure (a steel beam or the like is not shown) and the wall panel 1 is used as a vertical wall, and is attached by a wall panel attaching portion 8 by a rocking construction method. In the event of an earthquake, the wall panel 1 is locked around the upper and lower wall panel mounting portions 8, so that the adjacent wall panel generates a relative displacement in the joint length direction in the joint portion 2, and straddles the joint portion 2. Vibration energy is transmitted to the joint member 7 provided. Since the viscoelastic body 3 is bonded to the joint member 7 between the bonding surfaces 4a, the vibration energy transmitted to the joint member 7 is changed into thermal energy by the viscoelastic body 3, Damping effect occurs in buildings.
In the first embodiment, opposing adhesive surfaces 4a are arranged in a direction perpendicular to the inner surface of the wall panel 1, and the viscoelastic body 3 is provided between the adhesive surfaces 4a. Therefore, as shown in FIG. 4, even when there is a step in the joint portion 2, the viscoelastic body 3 does not generate a compressive force or tensile force in the direction perpendicular to the surface of the viscoelastic body 3, and as a result, The thickness of the viscoelastic body 3 can be prevented from fluctuating, and the thickness of the viscoelastic body 3 can be provided at a predetermined thickness as designed, preventing the viscoelastic body 3 from peeling off from the holding member 4, Damping performance can be demonstrated.

  At this time, the viscoelastic body 3 undergoes shear deformation in the out-of-plane direction with respect to the wall panel 1 corresponding to the step difference between the surfaces of the adjacent wall panels 1. The direction of the shear deformation acting is along the joint length direction of the wall panel 1 and is a direction orthogonal to the direction of the shear deformation generated according to the step size. Compared with the case where the direction in which the adhesive surface 4a facing the surface is arranged is a direction parallel to the surface of the wall panel 1 (not including a vertical component), the influence on the vibration damping performance is small. Even when the step size in FIG. 4 is set to 5 mm, the shear deformation rate of the viscoelastic body 3 is 250% when the thickness of the viscoelastic body 3 is set to 2 mm. Although depending on the material of the viscoelastic body 3, generally, shear deformation of about 300% is possible at room temperature, and it is considered that any level difference of the wall panel 1 that can normally occur can be handled. The wall panel 1 is a lightweight cellular concrete panel having a length of 3300 mm, a width of 600 mm, and a thickness of 100 mm. A backup material 10 and a sealing 9 are applied to the joints on the outer surface side.

The thickness of the viscoelastic body 3 is not particularly specified, but a range of about 0.5 mm to 4 mm is considered suitable. Here, the thickness was 2 mm. The width was 23 mm.
The joint member 7 has a length of 1750 mm and a width of 102 mm, and is arranged symmetrically with respect to the joint part 2. The holding member 4 is formed by bending a steel plate having a thickness of 2 mm. The holding member 4 includes an adhesive surface 4a having a width of 25 mm and a support surface 4b having a width of 50 mm. The two holding members 4 are opposed to each other with the adhesive surface 4a facing each other. By providing the elastic body 3 by bonding, a joint member 7 in which the pair of holding members 4 are integrated by the viscoelastic body 3 was formed.
In order to fix the joint member 7 to the wall panel 1, an extension nail 5 a is used as the anchor member 5, and the support surface 4 b is penetrated without a gap so that the in-plane displacement between the wall panel 1 and the holding member 4 is less likely to occur. In the event of an earthquake, vibration energy can be effectively transmitted to the viscoelastic body 3 disposed on the joint 2 between the wall panels 1. Here, as the extended nail 5a, a twin nail having a length of 45 mm in which two nails having a shaft diameter of 2.7 mm were combined was used.

The interval between the anchor members 5 was 250 mm along the joint length. Further, although the distance from the long side edge surface side of the wall panel 1 to the position where the anchor member 5 is driven is 40 mm, it may be driven and fixed at a distance of about 150 mm. In the case of a lightweight cellular concrete panel, it is generally possible to drive the anchor member 5 stably inside the main bar by setting the distance to 100 mm or more.
Further, the support surface 4b was bonded to the inner surface of the wall panel 1 by using an adhesive.
2, 3, and 4, the extended nail 5 a (twin nail) is illustrated so that the nail opens toward the long side edge surface side of the wall panel 1. In this case, it is preferable that the nail is opened in the joint length direction of the wall panel 1.

[Second Example of Building Damping Structure]
Next, referring to FIG. 5, a second embodiment of the vibration damping structure for a building will be described. The second embodiment is also an example of a lightweight cellular concrete panel having a panel thickness of 100 mm as the wall panel 1, and a carved portion 1 a having a width of 20 mm and a depth of 25 mm is formed on the joint portion 2 of the wall panel 1 and facing adhesion Since the viscoelastic body 3 between the surface 4a and the adhesive surface 4a is arranged in the engraved portion 1a, the holding member 4 including the viscoelastic body 3 does not squeeze out of the surface of the wall panel 1 and has a good structure. I was able to do it.
While the depth of the engraved portion 1a is 25 mm, the width of the viscoelastic body 3 is 23 mm, and the entire viscoelastic body 3 can be accommodated in the engraved portion 1a.
The engraved portion 1a may be processed over the entire length along the joint length, but may be part of the joint length such as a portion where the opposing adhesive surface 4a and the viscoelastic body 3 between the adhesive surfaces 4a are arranged. The structure which provides the engraving part 1a may be sufficient.
In the case of a lightweight cellular concrete panel, the engraved portion 1a can be processed in advance in a factory and carried into a construction site. Of course, you may process the engraving part 1a in a construction site.

Further, in the second embodiment, a chamfer with a dimension of 3 mm is provided in order to prevent a defect such as a lack of the periphery of the engraved portion 1a.
A bolt 5b was used as the anchor member 5 and was screwed in advance to an embedded nut 5c provided at the factory. Since the support surface 4b is provided with a through hole 4c and is bolted through the through hole 4c, and then welded and joined 6, the structure of the wall panel 1 and the holding member 4 is less likely to cause in-plane misalignment. At the time of the earthquake, vibration energy can be effectively transmitted to the viscoelastic body 3 disposed on the joint portion 2 between the wall panels 1. Here, a bolt having a shaft diameter of 12 mm was used as the bolt 5b.
Here, a bond breaker 10 a is used instead of the backup material 10.

[Third embodiment of building vibration control structure]
In FIG. 6, a third embodiment of the vibration damping structure for a building will be described. The third embodiment is also an example of a lightweight cellular concrete panel having a panel thickness of 100 mm as the wall panel 1, and a carved portion 1 a having a width of 20 mm and a depth of 20 mm is formed on the joint portion 2 of the wall panel 1 and facing adhesion Since the viscoelastic body 3 between the surface 4a and the adhesive surface 4a is arranged in the engraved portion 1a, the holding member 4 including the viscoelastic body 3 does not squeeze out of the surface of the wall panel 1 and has a good structure. I was able to do it.
Since the depth of the engraved portion 1a is 5 mm shallower than the second embodiment and 20 mm, the entire 23 mm width of the viscoelastic body 3 could not be accommodated in the engraved portion 1a. The squeeze-out dimension was 10 mm, and it was possible to achieve a practically no problem.

[Fourth embodiment]
With reference to the fourth embodiment shown in FIG. 7, the direction θ in which the adhesive surface 4a facing the wall panel surface is disposed will be described. As for the direction θ, the vertical direction (90 degrees) direction has the highest effect of the invention and has been described in the first embodiment. However, the direction θ is not limited to the vertical direction (90 degrees) direction, and the direction is the horizontal direction. The closer the effect is, the smaller the effect is, but it is possible to exert an effect corresponding to the angle based on the vertical component with respect to the surface of the wall panel 1. The direction θ is preferably 30 degrees or more and 150 degrees or less, preferably 45 degrees or more and 135 degrees or less, and most preferably set in the vertical (90 degrees) direction. As shown in FIG. 7, even when the direction θ is set to about 45 degrees, the effect of 45 degrees can be exhibited.

[Examples of joint members]
In FIG. 8, three embodiments of the joint member according to the present invention will be described. In the left figure, a steel plate having a thickness of 2 mm is bent into an L shape to form a holding member 4, and the two holding members 4 are integrally formed by adhering a viscoelastic body 3 with a predetermined thickness of 2 mm to form a joint member. 7. The length was 1750 mm, the width was 102 mm, and the depth was 25 mm, and the lower hole 4 d was provided at a predetermined position on the support surface 4 b with a diameter smaller than the axial diameter of the anchor member 5 to the wall panel 1. The pitch of the prepared holes 4d was 250 mm.
The length of the joint member 7 is not limited to 1750 mm, and may be determined as appropriate from the ease of handling at the construction site and the fit in consideration of weight and the like. May be bent and the adhesion of the viscoelastic body 3 may be peeled off. Therefore, considering the ease of transportation, the thickness is preferably about 2000 mm or less.
The thickness of the viscoelastic body 3 is not particularly specified, but it is considered that a range of about 0.5 mm to 4 mm is a suitable range. Here, the thickness was 2 mm.
Moreover, although the width | variety of the viscoelastic body 3 was 23 mm, this is also not specifically limited, What is necessary is just to set in consideration of the accommodation, such as the dimension of the engraving part 1a to the joint part 2 of the wall panel 1. .

The holding member 4 is formed by bending a steel plate having a thickness of 2 mm into an L shape. However, the holding member 4 is not limited to this, and may be any structure that has rigidity sufficient to effectively transmit vibration energy to the viscoelastic body 3. Good.
In the middle figure, the lower hole 4d is omitted from the embodiment of the left figure. Although not shown here, the penetration position by the anchor member 5 to the wall panel 1 is marked and shown. Thus, by marking the penetration position by the anchor member 5, the installation position of the anchor member 5 at the construction site can be clarified.
The right figure expands and shows the Example of the joint member 7 of a short dimension of length 250mm in comparison with the left figure and a middle figure. As described above, those having a short length may be appropriately distributed and arranged on the joint portion 2 of the wall panel 1.

  As an application example of the present invention, it can be suitably used as a vibration damping structure of a building and a joint member used in the structure.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective explanatory view showing a first embodiment of a building vibration control structure according to the present invention. It is a perspective explanatory view which expands and shows the joint part of the 1st example. It is horizontal cross-section explanatory drawing which expands and shows the joint part of 1st Example. It is horizontal sectional explanatory drawing which expands and shows the state when there exists a level | step difference in the joint part of 1st Example. It is horizontal sectional explanatory drawing which expands and shows the joint part of 2nd Example which formed the engraving part in the joint part and arranged the viscoelastic body in this engraving part. A horizontal section showing an enlarged joint part of the third embodiment in which a carved part is formed in the joint part, a viscoelastic body is arranged in the carved part, and the viscoelastic body is arranged by squeezing out of the surface of the wall panel. It is explanatory drawing. It is horizontal cross-section explanatory drawing which expands and shows the joint part of 4th Example explaining direction (theta) by which the adhesion surface facing a wall panel surface is arranged. It is perspective explanatory drawing which shows 3 Example of the joint member which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall panel 1a Carved part 2 Joint part 3 Viscoelastic body 4 Holding member 4a Adhesive surface 4b Support surface 4c Through-hole 4d Pilot hole 5 Anchor member 5a Expansion nail 5b Bolt 5c Embedded nut 6 Welded joint 7 Joint member 8 Wall panel attachment Part 9 Sealing material 10 Backup material 10a Bond breaker θ The direction in which the adhesive surface facing the wall panel surface is arranged

Claims (7)

  A joint member is attached along a joint portion of a plurality of wall panels constituting the building, and the joint member is formed by a pair of holding members having a support surface arranged on substantially the same surface and an adhesive surface facing each other. The structure is controlled by a viscoelastic body with the surfaces opposed to each other, and the viscoelastic body is attached to the wall panel at a position along the joint portion. .   The structure for damping a building according to claim 1, wherein the adhesive surface is perpendicular to the wall panel surface.   The engraved part is formed in the joint part of the adjacent wall panel, and the viscoelastic body between the adhesive surface and the adhesive surface facing each other is arranged in the engraved part. Damping structure of buildings.   The building damping structure according to any one of claims 1 to 3, wherein the holding member is provided on a wall panel through an anchor member that penetrates the support surface without a gap.   The support surface is provided with a through hole, the holding member is provided on a wall panel via an anchor member penetrating the through hole, and the anchor member and the support surface are welded directly or indirectly. The building vibration control structure according to claim 1.   A joint member characterized in that a pair of holding members each having a support surface arranged on substantially the same surface and an opposing adhesive surface are integrated by a viscoelastic body between the opposing adhesive surfaces.   The joint member according to claim 6, wherein the adhesive surface is perpendicular to the support surface.

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