JP2010255340A - Damping structure and vibration absorbing member for use in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damping structure capable of inhibiting a vibration absorbing member from being destroyed by shaking, and the vibration absorbing member for use in the damping structure. <P>SOLUTION: When the shaking caused by earthquakes is great, a stud 20 follows the motion of structural plywood 34; a fastened state is maintained without the coming-off of nails 32 of the stud 20 and the structural plywood 34; and the motion of the structural plywood 34 is regulated with the stud 20. Thus, the displacement difference between the structural plywood 34, and the column 16 and a beam 18 is suppressed; and a rupture in a rubber member 24 is inhibited. More specifically, the stud 20, which has a low rigidity and follows the motion of the structural plywood 34, and the structural plywood 34 are connected together; thus, the stud 20 follows the motion of the structural plywood 34, even when undergoing the great shaking; the connection of the structural plywood 34 and the strut 20 is maintained; and the motion of the structural plywood 34 is suppressed. Thereby, the displacement difference between the structural plywood 34, and the column 16 and the beam 18 is suppressed; and the rupture in the rubber member 24 is inhibited. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vibration damping structure that suppresses shaking of a structure, and a vibration absorbing member used in the vibration damping structure.

Various coupling methods have been proposed for coupling the wall member and the structural member, which share the shearing force acting on the structural member of the structure during an earthquake, in order to exert a damping effect.
For example, Patent Document 1 describes a configuration in which a structural member and a wall member are coupled with a viscoelastic body.

  In other words, by connecting with a viscoelastic body, the vibration is absorbed by using the deformation characteristics of the viscoelastic material used for the structure to suppress the shaking of the structure.

JP 2002-180573 A

  However, when the earthquake shakes greatly, the highly rigid wall member and structural member shake greatly with different displacement, and the behavior of each other's shaking becomes complicated. Fracture tends to start from the part where

  That is, if a vibration absorbing member such as a viscoelastic material breaks down due to a large earthquake, the vibration suppressing effect by the vibration absorbing member will not be achieved in a subsequent earthquake (such as shaking back).

  In view of the above fact, it is an object of the present invention to suppress destruction of the vibration absorbing member due to shaking.

  The vibration damping structure according to claim 1 of the present invention is configured by connecting a plurality of vertical members and a plurality of cross members, and constructs a structural member, and the structural member via a vibration absorbing member. A wall member to be attached; and a support member that is disposed between the pair of longitudinal members, is attached to the structural member, is fixed to the wall member, and follows the movement of the wall member. To do.

  According to the said structure, the wall member is attached to the structural member comprised from several vertical members and several horizontal members through the vibrational absorption member.

  Here, when the shaking of the earthquake is large, the wall member and the longitudinal member and the transverse member are greatly shaken with different displacements, and the vibration absorbing member that attaches the wall member to the longitudinal member and the transverse member is destroyed. Can be considered.

  However, a support member that is attached to the structural member and that follows the wall member is fixed to the wall member. For this reason, even if a wall member shakes, the coupling | bonding with a supporting member is maintained, and also the motion of the wall member which received the shaking turns into a rotational motion centering on a supporting member. As a result, the behavior of the wall member, the vertical member, and the cross member becomes simple, the deformation does not concentrate at one place, and the destruction of the vibration absorbing member is suppressed.

  Further, the behavior can be estimated, and the vibration absorbing member can be adapted to the displacement difference of each part.

  The vibration damping structure according to claim 2 of the present invention is characterized in that, in claim 1, the rigidity of the support member is lower than the rigidity of the structural member.

  According to the said structure, a support member can be made to follow a motion of a wall member by making the rigidity of a support member lower than a structural member. That is, when the same material is used for the support member and the structural member, the support member can follow the movement of the wall member by making the cross section of the support member smaller than the cross sections of the vertical member and the cross member.

  The vibration damping structure according to claim 3 of the present invention is characterized in that, in claim 1, both end portions of the support member are rotatably supported on the structure member.

  According to the above configuration, the support member can follow the movement of the wall member by pivotally supporting the both end portions of the support member on the structural member. That is, the support member can be made to follow the movement of the wall member simply by changing the attachment method of the support member and the structural member.

  The damping structure according to a fourth aspect of the present invention is the vibration damping structure according to any one of the first to third aspects, wherein the vertical member is a column and the cross member is a beam or a base, and the wall member Is a structural plywood.

  According to the above configuration, the vertical member is a column, the cross member is a beam or a base, and the wall member is a structural plywood. That is, it is possible to employ a vibration damping structure that suppresses the destruction of the vibration absorbing member in the conventional wooden conventional construction method.

  The vibration damping structure according to a fifth aspect of the present invention is the vibration damping structure according to any one of the first to third aspects, wherein the vertical member is a column and the cross member is a beam or a base, and the wall member Is an inner wall material such as a gypsum boat.

  According to the above configuration, the vertical member is a column, the cross member is a beam or a base, and the wall member is an inner wall member such as a gypsum boat. In other words, a vibration damping structure that suppresses the destruction of the vibration absorbing member can be adopted in a conventional wooden conventional construction method and the like.

A vibration damping structure according to a sixth aspect of the present invention is characterized in that, in the fourth or fifth aspect, the support member is an inter-column arranged between the adjacent columns.
According to the said structure, since a supporting member is a stud arranged between adjacent pillars, it is not necessary to set a new member as a supporting member.

The vibration damping structure according to claim 7 of the present invention is characterized in that, in claim 6, the inner wall material such as the structural plywood or gypsum boat is fixed to the studs with nails.
According to the said structure, inner wall materials, such as a structural plywood or a gypsum boat, are being fixed to the stud with the nail. That is, since it can fix with the fixing tool with versatility, cost can be held down.

  The vibration damping structure according to claim 8 of the present invention is characterized in that, in claim 6, the inner wall material such as the structural plywood or gypsum boat is fixed to the studs with screws.

  According to the said structure, inner wall materials, such as a structural plywood or a gypsum boat, are being fixed to the stud with the screw. That is, since it can fix with the fixing tool with versatility, cost can be held down.

The vibration damping structure according to claim 9 of the present invention is characterized in that, in any one of claims 1 to 5, the support member is a string-like member.
According to the above configuration, since the support member is a string-like member, it is possible to suppress destruction of the vibration absorbing member using, for example, a rope.

According to a tenth aspect of the present invention, in the vibration damping structure according to any one of the first to ninth aspects, the vibration absorbing member includes a viscoelastic member that deforms and absorbs vibration.
According to the above configuration, since the vibration absorbing member includes a viscoelastic member that deforms and absorbs vibration, the cost can be reduced by using a viscoelastic body such as rubber, for example.

The vibration damping structure according to an eleventh aspect of the present invention is characterized in that, in the tenth aspect, the viscoelastic member is a rubber member made of a high damping rubber.
According to the above configuration, since the viscoelastic member is a high damping rubber, vibration energy can be efficiently absorbed.

  A vibration absorbing member according to a twelfth aspect of the present invention is a vibration absorbing member used in the vibration damping structure according to any one of the first to eleventh aspects, wherein the vibration absorbing member includes a plurality of longitudinal members and A first metal plate configured by connecting a plurality of cross members and attached to a structural member for constructing a structure, a second metal plate attached to a wall member as a reinforcing member, the first metal plate, and the And a viscoelastic member that is sandwiched between the second metal plates and deforms to absorb vibrations.

  According to the said structure, the vibration absorption member provided with the 1st metal plate, the 2nd metal plate, and the viscoelastic member clamped by these is used for the damping structure described in any one of Claim 1 thru | or 9. Thereby, the destruction by the vibration of the vibration absorbing member is suppressed.

  According to the present invention, destruction of the vibration absorbing member due to shaking can be suppressed.

A vibration damping structure 10 according to a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 7, the vibration damping structure 10 of the first embodiment includes a frame-shaped structural member 14 having a thickness and a width that fits into a Western-style wall or a Japanese-style room wall of a detached building 12. ing.

  As shown in FIG. 5, the structural member 14 includes a pair of columns 16 extending vertically and a pair of beams 18 extending horizontally. The upper and lower ends of the columns 16 are joined to the pair of beams 18 (not shown). ). In addition, although the beam 18 below the first floor of the building 12 is called a base, in this embodiment, the cross member of the structural member 14 is collectively referred to as a beam 18.

  Further, between the pair of columns 16, an intermediate column 20 having a cross section smaller than that of the columns 16 and the beam 18 is provided so as to extend vertically. (Omitted).

  Further, a rectangular flat plate-like structural plywood 34 is provided for forming the wall of the structural member 14, and the structural plywood 34 is a plurality of pillars 16 and beams 18 that are driven from the structural plywood 34 side. Further, the structural plywood 34 is fixed by a plurality of nails 32 driven into the intermediate pillar 20 from the side of the intermediate pillar 20.

  Further, as shown in FIG. 2, the structural plywood 34, the column 16, and the beam 18 are fixed at a plurality of locations by the vibration absorbing member 22.

  As shown in FIG. 4, the vibration absorbing member 22 is a highly damped high damping rubber material as a viscoelastic body (loss coefficient (tan (δ when the phase difference between stress and strain acting on the rubber is δ)). ) And a rectangular rubber member 24 formed from 0.1 to 0.6), and the rubber member 24 is coupled to one end and the column 16 or the beam 18 (see FIG. 5). And an L-shaped bracket 26 that is coupled to the other end, and a flat plate bracket 28 that is coupled to the structural plywood 34 (see FIG. 5). . Further, the L-shaped bracket 26 and the flat plate bracket 28 are provided with a plurality of circular holes 26A, 28A through which the nail 32 is inserted when being fixed to the structural member 14 with the nail 32.

  The L-shaped bracket 26 and the rubber member 24, and the flat plate bracket 28 and the rubber member 24 are firmly connected by vulcanization adhesion or the like. An example of the hysteresis restoring force characteristic of the high damping rubber is shown in the graph of FIG. 6 (the horizontal axis indicates the horizontal displacement δ and the vertical axis indicates the horizontal load Q). It can be seen that the energy in the shaded area is absorbed by the high damping rubber. That is, the high damping rubber can efficiently absorb vibration energy by being deformed.

  As shown in FIG. 3, the L-shaped bracket 26 of the vibration absorbing member 22 is fixed to the column 16 by a nail 32 that is inserted into the column 16 through the circular hole 26A, and the flat plate bracket 28 is inserted through the circular hole 28A. The structural plywood 34 is fixed to the structural plywood 34 by nails 32 driven into the structural plywood 34.

  That is, when the structural plywood 34, the column 16 and the beam 18 are relatively shaken due to an earthquake or the like, the rubber member 24 is deformed to provide a vibration damping effect.

Next, the operation of the vibration damping structure 10 of this embodiment will be described.
As shown in FIGS. 1 (A) and 1 (B), when the building 12 (see FIG. 7) sways in the left-right direction due to an earthquake or the like, the beam 18 translates left and right, the column 16 tilts left and right, and the upper side The connecting portion between the beam 18 and the column 16 moves in a circular hole shape.

  On the other hand, the structural plywood 34 receives the force by which the structural member 14 moves through the nail 32 or the like. However, the structural plywood 34 does not follow the movement of the structural member 14 because the structural plywood 34 receives an in-plane force with high rigidity. Shake. For this reason, the structural member 14 and the structural plywood 34 sway with different displacements. As a result, when a force greater than the holding force of the nail 32 acts on the nail 32, the nail 32 comes off from the structural plywood 34, The connection between the structural plywood 34 and the column 16 and the beam 18 by the nail 32 is released. 1A and 1B are shown larger than the actual deformation in order to express the shaking of the structural member 14 and the structural plywood 34 in an easy-to-understand manner.

  However, with respect to the coupling between the structural plywood 34 and the structural member 14 by the vibration absorbing member 22, the rubber member 24 shown in FIG. 3 is deformed, so that the coupling by the vibration absorbing member 22 is not released and the rubber is further removed. The deformation of the member 24 absorbs the shaking of the building 12 (see FIG. 7).

  Here, when the shaking of the earthquake is large, the structural member 14 and the structural plywood 34 are shaken with different displacements, the rubber member 24 is broken, and the damping effect due to the deformation of the rubber member 24 cannot be expected. It is possible.

  That is, if the rubber member 24 is broken by the first large shake, the vibration damping effect is lost and the building 12 (see FIG. 7) shakes greatly in the case of rolling back.

  However, the structural plywood 34 according to the present embodiment is fastened by the nail 32 and the studs 20 whose upper and lower ends are attached to the beam 18. Further, as described above, the cross section of the inter-column 20 is smaller than the column 16 and the beam 18, and the rigidity is lower than that of the column 16 and the beam 18. For this reason, the spacer 20 follows the movement of the structural plywood 34, and the fastening is maintained without the nails 32 of the spacer 20 and the structural plywood 34 coming off.

Thus, by maintaining the fastening with the intermediate pillar 20, the motion of the structural plywood 34 subjected to the shaking becomes a rotational movement around the intermediate pillar 20. Thereby, the behavior of the structural plywood 34, the column 16 and the beam 18 is simplified, and the deformation is not concentrated in one place, and the destruction of the rubber member 24 is suppressed.
Further, the behavior can be estimated, and the vibration absorbing member can be adapted to the displacement difference of each part.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in the above embodiment, the vibration absorbing member is provided with the rubber member 24 and the rubber member 24 is deformed to absorb the vibration. Instead, the vibration absorbing damper is used to absorb the vibration. It may be sufficient if it absorbs vibration by replacing kinetic energy with thermal energy.

  In the above embodiment, a high damping rubber material is used as the material of the rubber member 24 for the vibration absorbing member. However, instead of this, vibration may be absorbed using a general rubber material (for example, EPDM rubber). Good.

  Moreover, in the said embodiment, although the nail | claw was used and the structural plywood 34 and the stud 20 etc. were combined, it may replace with this and may connect using a wood screw etc.

  Moreover, in the said embodiment, although the structural plywood 34 was demonstrated as an example as a wall member, it replaces with this and may use inner wall materials, such as a gypsum boat, as a wall member.

Next, 2nd Embodiment of the damping structure 10 of this invention is described according to FIG. 8, FIG.
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 9, the cross section of the stud 50 is not smaller than the cross section of the pillar 16 and the beam 18, and instead, the upper and lower ends of the stud 50 can be rotated by the beam 18. It is supported by.

  Specifically, a semicircular fixture 52 is attached to the upper beam 18 and the lower beam 18 with nails 32 so as to oppose the circular holes, and a shaft pin 54 provided on the fixture 52 is a stud. By inserting a circular hole (not shown) provided at the end of 50, the stud 50 is rotatably supported by the beam 18. Note that the fixture 52 is also attached to the opposite side (the back side of the paper) of the beam 18, and the spacer 50 is sandwiched between the pair of fixtures 52.

  With this configuration, as shown in FIG. 8, the large pillar 50 rotates around the shaft pin 54 and follows the movement of the structural plywood 34 with respect to large shaking.

Next, a third embodiment of the vibration damping structure 10 of the present invention will be described with reference to FIG.
In addition, about the same member as 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, as shown in FIG. 10, the stud 50 is not provided, and instead, both ends of the rope 60 as a string-like member are fixed to the shaft pin 54. Further, the rope 60 and the structural plywood 34 are fixed with a high-strength adhesive.

  With this configuration, as shown in FIG. 51, the rope 60 rotates around the shaft pin 54 and follows the movement of the structural plywood 34 with respect to large shaking.

(A) (B) It is the front view which showed the damping structure which concerns on 1st Embodiment of this invention, and showed the state which the structural member etc. shook by the earthquake. It is the front view which showed the damping structure which concerns on 1st Embodiment of this invention. 1 is a cross-sectional view showing a vibration damping structure according to a first embodiment of the present invention and showing a connection between a structural member and a structural plywood by a vibration absorbing member. It is the perspective view which showed the vibrational absorption member employ | adopted as the damping structure which concerns on 1st Embodiment of this invention. It is the disassembled perspective view which showed the damping structure which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the log | history restoring force characteristic of the high damping rubber with which the vibration-absorbing member employ | adopted as the damping structure which concerns on 1st Embodiment of this invention was equipped. 1 is a schematic front view of a building in which a damping structure according to a first embodiment of the present invention is employed. (A) (B) It is the front view which showed the damping structure which concerns on 2nd Embodiment of this invention, and showed the state which the structural member etc. shook by the earthquake. It is the front view which showed the damping structure which concerns on 2nd Embodiment of this invention. It is the front view which showed the damping structure which concerns on 2nd Embodiment of this invention.

10 Damping structure 12 Building (structure)
14 Structural member 16 Column (vertical)
18 Beam (cross member)
20 stud (support member)
22 Vibration absorbing member 24 Rubber member (viscoelastic member)
26 L-shaped bracket (first metal plate)
28 Flat bracket (second metal plate)
32 Nail 34 Structural plywood (wall member)
50 studs (support members)
60 rope (string member)

Claims (12)

A structural member configured by connecting a plurality of vertical members and a plurality of cross members, and constructing a structure;
A wall member attached to the structural member via a vibration absorbing member;
A support member disposed between the pair of longitudinal members, attached to the structural member, fixed to the wall member, and following the movement of the wall member;
A vibration damping structure characterized by comprising:   2. The vibration damping structure according to claim 1, wherein the rigidity of the support member is lower than the rigidity of the structural member.   The vibration damping structure according to claim 1, wherein both ends of the support member are rotatably supported by the structural member. The longitudinal member is a pillar,
The cross member is a beam or a base,
The damping structure according to any one of claims 1 to 3, wherein the wall member is a structural plywood. The longitudinal member is a pillar,
The cross member is a beam or a base,
4. The vibration damping structure according to claim 1, wherein the wall member is an inner wall material such as a gypsum boat.   The vibration damping structure according to claim 4 or 5, wherein the support member is an inter-column arranged between the adjacent columns.   The vibration control structure according to claim 6, wherein the inner wall material such as the structural plywood or a gypsum boat is fixed to the studs with nails.   The vibration control structure according to claim 6, wherein the inner wall material such as the structural plywood or a gypsum boat is fixed to the studs with screws.   The vibration control structure according to claim 1, wherein the support member is a string-like member.   10. The vibration damping structure according to claim 1, wherein the vibration absorbing member includes a viscoelastic member that deforms and absorbs vibration. 10.   The vibration damping structure according to claim 10, wherein the viscoelastic member is a rubber member made of high damping rubber. A vibration-absorbing member used for the vibration-damping structure according to any one of claims 1 to 11,
A first metal plate configured by connecting a plurality of vertical members and a plurality of cross members, and attached to a structural member for constructing a structure;
A second metal plate attached to a wall member as a reinforcing member;
A viscoelastic member that is sandwiched between the first metal plate and the second metal plate and absorbs vibration by deformation;
A vibration absorbing member comprising:

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