JP4592145B2 - Damping damper and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration damping damper applied to a wooden building and a manufacturing method thereof.
[0002]
[Prior art]
In order to improve the earthquake resistance of buildings and reduce earthquake damage, it has become widespread to incorporate damping dampers in buildings to absorb and attenuate vibrations during earthquakes.
[0003]
[Problems to be solved by the invention]
Damping dampers that have been developed and put to practical use are mainly for large buildings such as high-rise apartment buildings, but in recent years, they are also used for small wooden buildings such as detached wooden houses. There is a demand to install a damper, and the development of a simple and inexpensive seismic damper that can be applied to wooden buildings is desired.
[0006]
[Means for Solving the Problems]
The invention of claim 1 is a vibration control damper installed in a joint part of a wooden frame, and sandwiches a pair of steel plates fixed to two members joined to each other with a viscoelastic material sandwiched between them. The pair of steel plates is composed of a main body portion sandwiching the viscoelastic material and a mounting portion fixed to the surface of the member, and one of the pair of steel plates. The mounting part and the main body part are formed into a flat plate shape on the same plane, and the other is bent into a stepped shape in which the mounting part and the main body part are shifted by an amount corresponding to the thickness of the steel plate itself and the thickness of the viscoelastic material. One of the pair of steel plates is an attachment portion whose central portion is fixed to the pillar, and both side portions thereof are body portions, and the other is an attachment portion whose one end portion is fixed to the beam end portion, One steel plate is fixed to the column, and the other steel plate It is intended to be fixed respectively on each side of the beam end of the column.
[0007]
The invention of claim 2 is a vibration control damper installed at the joint of the wooden frame, and sandwiches a pair of steel plates fixed to two members joined to each other with a viscoelastic material sandwiched between them. The pair of steel plates is composed of a main body portion sandwiching the viscoelastic material and a mounting portion fixed to the surface of the member, and one of the pair of steel plates. The mounting part and the main body part are formed into a flat plate shape on the same plane, and the other is bent into a stepped shape in which the mounting part and the main body part are shifted by an amount corresponding to the thickness of the steel plate itself and the thickness of the viscoelastic material. One side of the pair of steel plates is used as a mounting part whose central part is fixed to the column, and both side parts thereof are used as main body parts, and the other side is used as a mounting part whose central part is fixed to the beam end part. Each of which is a main body, and said one steel plate Each fixed above and below the Joint portion, the other steel plate is intended to be fixed respectively to the left and right the partition opening.
[0010]
The invention of claim 3 is a vibration control damper installed at the joint of the wooden frame, and sandwiches a pair of steel plates fixed to two members joined to each other with a viscoelastic material sandwiched between them. The pair of steel plates is composed of a main body portion sandwiching the viscoelastic material and a mounting portion fixed to the surface of the member, and one of the pair of steel plates. Is fixed to the base, the other is fixed to the column base, and the other steel plate is welded with an anchor metal fixed to the base.
[0011]
The invention of claim 4 is a vibration control damper installed at the joint of the wooden frame, and sandwiches a pair of steel plates fixed to two members joined to each other with a viscoelastic material sandwiched between them. The pair of steel plates is composed of a main body portion sandwiching the viscoelastic material and a mounting portion fixed to the surface of the member, and one of the pair of steel plates. Is fixed to the base, the other is fixed to the column base, and the strut is fixed to one of the pair of steel plates.
[0012]
According to a fifth aspect of the present invention, in the vibration damping damper according to any one of the first to fourth aspects, the pair of steel plates are fastened with bolts in a state in which relative in-plane rotation is allowed.
[0016]
The invention of claim 6 is a method for manufacturing the vibration damping damper according to any one of claims 1 to 5 , wherein the sealing material has heat resistance and elasticity except for the upper part at the peripheral edge of one steel plate. A viscoelastic material having heat melting property is disposed in the inner space of the sealing material, and the other steel plate is overlapped with the steel plate via a spacer and temporarily fastened with a bolt to assemble the assembly, The viscoelastic material is melted and re-solidified between both steel plates by heating the whole assembly in a standing state.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. The seismic dampers of the following embodiments are all installed at a joint part of a wooden frame in a detached wooden house, and the same members are denoted by the same reference numerals.
The damping damper A described below shows the basic configuration of the damping damper of the present invention, and the damping dampers D, E, F, and G are reference examples, and all of them are strictly speaking. Although it is not an embodiment of the present invention, in the following description, for the sake of convenience, all of them may be referred to as an embodiment.
[0018]
The damping damper A shown in FIG. 1 has a configuration in which a viscoelastic material 3 is sandwiched between a steel plate 1 and a steel plate 2 and is superposed in a state in which the in-plane relative rotation is possible, and the steel plate 1 is fixed to a column 4. The steel plate 2 is used while being fixed to the beam 5. The steel plates 1 and 2 are respectively attached to main body portions 1a and 2a sandwiching the viscoelastic material 3 and mounting portions 1b and 2b fixed to the surfaces of the pillars 4 or beams 5 by wood screws (or screws or through bolts) 6. It consists of
[0019]
In the seismic damper A of the present embodiment, the steel plate 2 fixed to the beam 5 is a simple rectangular plate having the main body 2a and the mounting portion 2b on the same plane, but is fixed to the column 4. The steel plate 1 is bent into a stepped shape in which the main body portion 1a and the mounting portion 1b are shifted by an amount corresponding to the thickness of the steel plate 1 itself and the thickness of the viscoelastic material 3, and the bent steel plate 1 is By using, both the main-body parts 1a and 2a are laminated | stacked without trouble.
[0020]
The main body portions 1a and 2a are fastened by bolts 7 that function as stoppers to prevent the opening, but the holes through which the bolts 7 pass are loose holes, and the relative in-plane relationship between the main body portions 1a and 2a. The rotation is not constrained.
[0021]
Contrary to the above, the steel plate 1 may be fixed to the beam 5 and the steel plate 2 may be fixed to the column 4, or in the case where there is a difference in the cross-sectional dimensions of the column 4 and the beam 5, The steel plate 1 is not used, and the steel plate 1 may be a simple flat plate like the steel plate 2. Further, the bolt 7 as a stopper is not necessarily provided and may be omitted if unnecessary.
[0022]
The joint part of the wooden frame is substantially pin-jointed, so it easily deforms during an earthquake. However, when the wooden frame is about to deform by installing this damping damper A on the joint. Tends to cause in-plane relative rotation between the steel plates 1 and 2, the relative rotation is suppressed by the viscous resistance force of the viscoelastic material 3, and the vibration of the wooden frame is quickly damped. Excellent vibration control effect can be obtained. And since this damping damper A is the one in which the viscoelastic material 3 is simply sandwiched between the two steel plates 1 and 2, the structure is extremely simple, and the installation to the wooden frame is easy and reliable. It can be manufactured and can be manufactured at low cost, and is optimal for application to small-scale wooden buildings such as detached wooden houses.
[0023]
Further, since the mounting portions 1b and 2b of the steel plates 1 and 2 are fixed to a plane parallel to the construction surface, an excessive pulling force is not applied to the wood screws 6 and the like for the fixing, and accordingly It can be securely fixed with a small number of wood screws 6 (or screws or through bolts).
[0024]
The damping damper B shown in FIG. 2 has a structure in which two sets of the damping damper A are connected in the lateral direction, and is fixed to one steel plate 8 fixed to the column 4 and the end of each beam 5. The same as the above-described damping damper A, except that the steel plate 8 fixed to the column 4 is horizontally long, the central portion thereof is the mounting portion 8b, and both side portions thereof are the main body portions 8a. It is. According to this damping damper B, the damping effect for the two frames of the wooden frame can be obtained simultaneously. The direction of the damping damper B is changed by 90 °, the mounting portion 8b of the steel plate 8 is fixed to the end of the beam 5, and each steel plate 2 is fixed to the column base and the column head of the upper and lower columns 4. Is also possible.
[0025]
The damping damper C shown in FIG. 3 has a configuration in which two sets of the damping dampers B are connected in the vertical direction. The steel plate 8 is fixed to the upper and lower sides of the joint portion, and the central portion is the mounting portion 9b. By fixing two vertically long steel plates 9 each having a body portion 9a on both sides, to the ends of the left and right beams 5 of the joint, the four structural surfaces around the joint are controlled. The seismic effect can be obtained at the same time. Of course, the damping damper C may be installed by changing the direction by 90 °.
[0026]
Each of the damping dampers A to C described above is a combination of the simple flat steel plates 2 and 9 and the steel plates 1 and 8 bent into a stepped shape, but the shape of the steel plate is changed. For example, the damping damper shown in FIGS.
[0027]
The seismic damper D shown in FIG. 4 uses two steel plates 10 having the same shape bent into an L shape. Each steel plate 10 is composed of a main body portion 10a and a mounting portion 10b. By fixing to the side surface and the lower surface of the beam 5, it can be installed in the construction surface of the wooden frame and is excellent in fit. However, if the steel plate is bent into an L shape in this way, the bent portion tends to bend and is effective because the bending deformation of the steel plate cannot be ignored for the minute deformation of the wooden frame (about 1 to 2 mm). Therefore, it is indispensable to provide the reinforcing rib 11 at the bent portion to restrain the bending deformation reliably. By providing such a reinforcing rib 11, each of the above-mentioned vibration dampers is provided. A seismic control effect equivalent to A to C can be obtained.
[0028]
In this seismic damper D, the mounting portion 10b is fixed to a surface orthogonal to the construction surface, so that the wood screw 6, screws or through bolts for fixing the mounting portion 10b to the column 4 or beam 5 are large. Since pulling force is applied, it is necessary to consider its pulling strength.
[0029]
The damping damper E shown in FIG. 5 uses two steel plates 10 bent into an L shape and provided with reinforcing ribs 11 as with the damping damper D described above. The orientation is changed so that the mounting portion 10b is directed to the other steel plate 10 side, and this damping damper E is attached to one side of the column 3 as shown in the figure, for example, on the back side, for example, It is possible to secure a space for fixing other members such as different ones.
[0030]
The damping damper F shown in FIG. 6 uses two steel plates 12 having the same shape and having a T shape. Each steel plate 12 is obtained by welding a main body portion 12a and a mounting portion 12b so as to form a T shape, and such a T shape has higher rigidity than an L shape, and thus is reinforced as described above. The rib 11 may be omitted.
[0031]
Further, it is of course possible to use a combination of different types of steel plates as appropriate. For example, a flat steel plate 2 and an L-shaped steel plate 10 may be combined, such as a damping damper G shown in FIG. You may combine the steel plate 12 and the L-shaped steel plate 10 suitably. Of course, it is possible to use the L-shaped steel plate 10 or the T-shaped steel plate 12 in place of the flat plate-shaped steel plate 2 in the damping damper B shown in FIG.
[0032]
The above is an example in the case where each of the damping dampers A to G is installed in the joint portion between the column 4 and the beam 5, but these damping dampers are used as they are in other joint portions such as columns and bases (or large pulls). ) And joints between beams can be installed in the same way.
[0033]
The damping damper H shown in FIG. 8 is installed at the joint between the pillar 4 and the base 15. This is based on the damping damper B shown in FIG. 2, and the top and bottom are reversed, and the mounting portion 8 b of the steel plate 8 is fixed to the leg portion of the column 4, and the mounting portion 2 b of each steel plate 2 is fixed to the base 15. In addition, an anchor metal (so-called hole-down metal) 16 is welded to the steel plate 8 so that the tip thereof is fixed to the bottom surface of the base 15. Reference numeral 17 denotes a fabric foundation.
[0034]
According to this vibration control damper H, in addition to obtaining the same vibration control effect as each of the above vibration control dampers, the column 4 is securely and firmly joined to the base 15 via the anchor hardware 16 and the steel plate 8. Can do.
[0035]
In this damping damper H, the anchor hardware 16 is directly welded to the back surface of the steel plate 8 as shown in FIG. 9 (a), or on the back side of the steel plate 8 as shown in FIG. 9 (b). It may be attached via the bracket 18. Of course, it is possible to use the half steel plate 1 instead of the horizontally long steel plate 8 or to change the steel plate 2 to the L-shaped steel plate 10 or the T-shaped steel plate 12.
[0036]
The seismic damper I shown in FIG. 10 is also installed at the joint between the pillar 4 and the base 15, and is also used as a fixed metal fitting. That is, the L-shaped steel plate 10 is fixed to the upper surface of the base 15, and the brace fixing hardware for fixing the strut 20 is fixed to the leg portion of the column 4 to function as the other steel plate 21. The viscoelastic material 3 is sandwiched between the steel plates 10 and 21. Contrary to the above, it is the same even if the steel plate 21 as the brace fixing metal is fixed to the base 15 and the steel plate 10 is fixed to the column 3. As the brace fixing hardware, a general-purpose one that has been conventionally used can be used as it is, and the L-shaped steel plate 10 can be changed to the flat steel plate 2 or the T-shaped steel plate 12 as a matter of course.
[0037]
In addition, in each of the above damping dampers A to I, in order to more securely fix each steel plate to the members such as the column 4, the beam 5, and the base 15, fixing with wood screws 6, screws or through bolts It is preferable to use adhesion with an adhesive such as an epoxy resin in combination, but fixing with any of them may be used, and these may be arbitrarily used as necessary. In addition, as shown in FIG. 11 by taking the steel plate 1 as an example, it is also preferable to prevent slipping by providing a large number of protrusions 25 on the surface of the mounting portion 1 b and biting into the pillars 4, the beams 5 and the base 15. The protrusion 25 can be formed by pressing or punching the surface of the attachment portion 1b, or by adhesion of a granular material. Alternatively, as shown in FIG. 12, when the hole 26 for passing the wood screw 6, the screw, or the through bolt is formed in the mounting portion 1 b, a burr 27 is intentionally generated around the hole 26, and the burr 27 functions as the protrusion 25. It can also be considered. Alternatively, the hole 26 can be formed by cutting and raising the steel plate, and the cut and raised can be used as the protrusion 25.
[0038]
Next, an example of a manufacturing method for each of the above-described seismic dampers will be described with reference to FIG. FIG. 13 illustrates the manufacturing procedure of the damping damper D shown in FIG. 4 as an example. First, as shown in FIG. The sealing material 30 is attached, the sealing material 30 is also attached around the hole through which the bolt 7 is passed, the viscoelastic material 3 having heat melting property is disposed in the inner space of the sealing material 30, and the interval between the steel plates 10 is regulated. A spacer 31 is arranged for this purpose. For example, a silicon rubber rope or a heat-resistant sponge can be suitably used as the sealing material 30, and a viscoelastic material 3 that has been processed into a sheet shape can be suitably employed, and a steel ball can be suitably employed as the spacer 31. It is.
[0039]
Then, the other steel plate 10 is overlapped with the steel plate 10 and temporarily fastened with the bolt 7 to form the assembly 32 as shown in FIG. 5B, and the whole is kept in a state where the assembly 32 is erected. Heat. It is preferable to heat the assembly 32 by transporting the assembly 32 by a belt conveyor while standing and passing through the tunnel heater. The heating temperature and the heating time may be optimally set in consideration of the type of viscoelastic material 3 and the filling amount thereof, but usually about 170 to 200 ° C. and about 15 to 20 minutes are sufficient.
[0040]
As described above, when the viscoelastic material 3 is melted by heating the entire assembly 32 in an upright state, the viscoelastic material 3 is cornered while air is naturally lifted and excluded from between the two steel plates 10. It naturally fills up and does not leak out of the sealing material 30. And if the assembly 32 is naturally cooled or forcedly cooled to resolidify the viscoelastic material 3, the damping damper D is completed. According to such a manufacturing method, the damping damper can be manufactured efficiently and inexpensively.
[0041]
【The invention's effect】
The seismic damper of the present invention is formed by laminating a pair of steel plates fixed to two members joined to a joint portion of a wooden shaft, with a viscoelastic material sandwiched between them so that they can be relatively rotated in a plane. Each of the pair of steel plates has a main body portion that sandwiches the viscoelastic material and an attachment portion that is fixed to the surface of the member. In-plane relative rotation occurs and the viscoelastic material's viscous resistance force provides an excellent vibration control effect, and the structure is extremely simple and can be fixed easily and securely to a wooden frame. It is ideal for use in small-scale wooden buildings such as detached houses.
[0042]
In addition, since the vibration damping damper of the invention of claim 1 and claim 2 is one in which either one of the pair of steel plates is flat and the other is bent into a stepped shape, the structure is the simplest, and each Since the steel plate is fixed to a plane parallel to the construction surface, it can be securely fixed firmly with a small number of wood screws or through bolts.
[0043]
And especially the damping damper of invention of Claim 1 is the structure which fixes the center part of one steel plate to a pillar as an attachment part, and fixes one end part of the other steel plate to a beam end part as an attachment part, respectively. The seismic control effect for the two frames of the wooden frame can be obtained simultaneously.
[0044]
In particular, the damping damper of the invention of claim 2 is configured to fix one steel plate to the top and bottom of the joint portion and to fix the other steel plate to the left and right of the joint portion. The seismic control effect for the four constructions is obtained simultaneously.
[0047]
Since the seismic damper of the invention of claim 3 fixes one steel plate to the base and fixes the other to the column base and welds the anchor metal to it, in addition to obtaining the seismic control effect, The pillar can be firmly fixed to the base.
[0048]
The seismic damper of the invention of claim 4 fixes one steel plate to the base and the other to the column base, and fixes the strut to any of the steel plates. Can reduce the number of parts and fit.
[0049]
Since the seismic damper of the invention of claim 5 is bolted with a pair of steel plates in a state in which in-plane relative rotation is possible, the bolt functions as a stopper to prevent the steel plates from being separated from each other. .
[0053]
In the manufacturing method of the invention of claim 6 , a sealing material having heat resistance and elasticity is attached to the peripheral edge of one steel plate except for the upper portion, and a viscoelastic material having heat melting property is disposed in the inner space of the sealing material. Then, the other steel plate is overlapped with the steel plate via a spacer and temporarily fastened with a bolt to assemble the assembly, and the whole assembly is heated between the two steel plates by raising the assembly. Since the viscoelastic material is melted and re-solidified, the above-described vibration damping damper can be manufactured efficiently and inexpensively.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of a vibration damper according to the present invention.
FIG. 2 is a diagram showing another embodiment.
FIG. 3 is a diagram showing still another embodiment.
FIG. 4 is a diagram showing still another embodiment.
FIG. 5 is a diagram showing still another embodiment.
FIG. 6 is a diagram showing still another embodiment.
FIG. 7 is a diagram showing still another embodiment.
FIG. 8 is a diagram showing still another embodiment.
FIG. 9 is a diagram showing still another embodiment.
FIG. 10 is a diagram showing still another embodiment.
FIG. 11 is a view showing an example when a protrusion is provided on the mounting portion.
FIG. 12 is a view showing an example of protrusions.
FIG. 13 is a diagram showing an embodiment of a production method of the present invention.
[Explanation of symbols]
A to I Damping damper 1 Steel plate 1a Body portion 1b Mounting portion 2 Steel plate 2a Body portion 2b Mounting portion 3 Viscoelastic material 4 Column (member)
5 Beam (member)
6 Wood screw 7 Bolt 8 Steel plate 8a Body portion 8b Attachment portion 9 Steel plate 9a Body portion 9b Attachment portion 10 Steel plate 10a Body portion 10b Attachment portion 11 Reinforcement rib 12 Steel plate 12a Body portion 12b Attachment portion 15 Base (member)
16 Anchor hardware 20 Stiffening 21 Steel plate (stiffening fixed hardware)
25 Protrusion 26 Hole 27 Burr (protrusion)
30 Sealing material 31 Spacer 32 Assembly

Claims (6)

A damping damper installed at the joint of a wooden frame, in which a pair of steel plates fixed to two members joined together can be rotated relative to each other with a viscoelastic material between them. Each of the pair of steel plates is composed of a main body part sandwiching the viscoelastic material and an attachment part fixed to the surface of the member ,
One of the pair of steel plates has a flat plate shape in which the mounting portion and the main body portion are on the same plane, and the other has the mounting portion and the main body portion shifted by an amount corresponding to the thickness of the steel plate itself and the thickness of the viscoelastic material. It is bent into a stepped shape ,
One of the pair of steel plates is a mounting portion whose central portion is fixed to the column, and both side portions thereof are main body portions, and the other is a mounting portion whose one end portion is fixed to the beam end portion. Is fixed to a column, and the other steel plate is fixed to beam ends on both sides of the column, respectively. A damping damper installed at the joint of a wooden frame, in which a pair of steel plates fixed to two members joined together can be rotated relative to each other with a viscoelastic material between them. Each of the pair of steel plates comprises a main body portion sandwiching the viscoelastic material and an attachment portion fixed to the surface of the member ,
One of the pair of steel plates has a flat plate shape in which the mounting portion and the main body portion are on the same plane, and the other has the mounting portion and the main body portion shifted by an amount corresponding to the thickness of the steel plate itself and the thickness of the viscoelastic material. It is bent into a stepped shape ,
Either one of the pair of steel plates is used as a mounting part whose central part is fixed to the column, and both side parts thereof are used as main parts, and the other part is used as a mounting part whose central part is fixed to the beam end part. A seismic damper comprising a main body, wherein the one steel plate is fixed to the top and bottom of the joint portion, and the other steel plate is fixed to the left and right of the joint portion. A damping damper installed at the joint of a wooden frame, in which a pair of steel plates fixed to two members joined together can be rotated relative to each other with a viscoelastic material between them. Each of the pair of steel plates is composed of a main body part sandwiching the viscoelastic material and an attachment part fixed to the surface of the member ,
One of the pair of steel plates is fixed to the base, the other is fixed to the column base, and the other steel plate is welded with an anchor hardware fixed to the base. . A damping damper installed at the joint of a wooden frame, in which a pair of steel plates fixed to two members joined together can be rotated relative to each other with a viscoelastic material between them. Each of the pair of steel plates comprises a main body portion sandwiching the viscoelastic material and an attachment portion fixed to the surface of the member ,
One of a pair of steel plates is fixed to a base, the other is fixed to a column base part, and a striation is fixed to one of these pairs of steel plates. 5. The vibration damper according to claim 1 , wherein the pair of steel plates are bolt-fastened in a state where relative in-plane rotation is allowed. A method for manufacturing the vibration damping damper according to any one of claims 1 to 5 , wherein a sealing material having heat resistance and elasticity is attached to a peripheral portion of one steel plate except for an upper portion, and the sealing material A state in which a viscoelastic material having heat melting property is disposed in the inner space of the steel plate, the other steel plate is overlapped with the steel plate via a spacer and temporarily fastened with a bolt to assemble the assembly, and the assembly is erected The method for manufacturing a vibration damper is characterized in that the viscoelastic material is melted and re-solidified between both steel plates by heating the whole.

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