JP2022053279A - Vibration control damper and vibration control frame structure - Google Patents

Abstract

To effectively prevent deformation of and damage to the outside of a frame surface, and obtain a stable vibration control effect.SOLUTION: A vibration control damper 1 comprises: fixing members 2, 2 fixed to a pillar 43A of a frame 40; a pair of receiving plates 3, 3 that are arranged so as to sandwich the fixing members 2, 2 in a thickness direction of the frame 40, and into which extension members 45, 45 erected in the frame 40 are inserted and joined; and a friction damper unit 4 that is provided between the fixing members 2, 2 and the receiving plates 3, 3, and generates damping force against external force input to the receiving plates 3, 3 via the extension members 45, 45. The receiving plates 3, 3 have bending parts 12, 12 between damper fixing parts 10, 10 and extension material fixing parts 11, 11 so that the distance between the extension material fixing parts 11, 11 is larger than a distance between the damper fixing parts 10, 10 in the thickness direction, and have a Z-shaped cross section.SELECTED DRAWING: Figure 6

Description

The present invention relates to a seismic control damper provided in a frame of a building frame and a seismic control frame structure in which the seismic control damper is incorporated in the frame.

A vibration control damper may be provided in the frame of a building frame such as a wooden building in order to attenuate the deformation of the building at the time of an earthquake. As this vibration control damper, for example, Patent Document 1 discloses a vibration control structure in which a frame body is combined with a vibration control hardware and a brace. In the damping hardware, the plate material fixed to the brace is sandwiched between a pair of fixing materials provided on the side surface of the column, and a friction material is provided between each fixing material and the plate material. It is a friction damper configured by arranging sliding plates between them.
Further, Patent Document 2 has a structure in which a pair of splicing plates are arranged on both outer sides of a middle plate having an elongated hole via a sliding plate and a friction plate, and are fastened with bolts and nuts to be joined between the splicing plates. The invention of a friction damper that moves the middle plate and the auxiliary plate relative to each other when the external force input from the material exceeds the frictional force generated between the sliding plate and the friction plate due to the binding of the bolt and the nut is disclosed.

Japanese Unexamined Patent Publication No. 2020-90830 Japanese Unexamined Patent Publication No. 2016-142329

In the friction damper of Patent Document 1, the plate material is fixed to one side of the brace (one side in the thickness direction of the frame), and the center of the brace and the center of the plate material do not match in the thickness direction of the frame. Therefore, if the frame is deformed in the horizontal direction and an axial force acts on the brace, the brace may bend in the out-of-plane direction, buckle, or the vibration damping hardware may be damaged.
Therefore, if a structural material is sandwiched between a pair of supporting plates and an external force is input as in Patent Document 2, deflection due to eccentricity or the like is suppressed. However, in this structure, since the structural material and the middle plate face each other, the structural material and the middle plate come into contact with each other during relative movement to generate a load, which hinders the relative movement and reduces the seismic control effect. ..

Therefore, an object of the present invention is to provide a vibration control damper and a vibration control frame structure that can effectively prevent deformation and breakage to the outside of the frame surface and also can obtain a stable vibration control effect. It was done.

In order to achieve the above object, the first invention of the present invention is a vibration control damper disposed in a frame composed of columns and horizontal members, which are structural materials of a building frame.
A fixing member fixed to either one of the structural members,
A pair of receiving plates that are arranged so as to sandwich the fixing member in the thickness direction of the frame and into which the erection material to be erected in the frame is inserted and joined.
A damper mechanism portion provided between the fixing member and the receiving plate and generating a damping force with respect to an external force input to the receiving plate via the erection material is included.
The pair of receiving plates have a bent portion between the fixing member holding side and the erection material joining side so that the distance on the erection material joining side is larger than the distance on the fixing member holding side in the thickness direction. It is characterized by having a stepped shape having.
Here, the "structural material side" means a structure in which the fixing member is directly fixed to the structural material, and the fixing member is indirectly fixed to the structural material via another member such as a erection material fixed to the structural material. Structure and include. The following inventions have the same purpose.
In another aspect of the first invention, in the above configuration, the fixing member has a mounting portion fixed to the one structural member side and a rising portion rising at a right angle from the mounting portion into the frame. The distance from the mounting portion to the bent portion of the receiving plate is larger than the rising length of the rising portion from the mounting portion.
In another aspect of the first invention, in the above configuration, the width of the receiving plate in the longitudinal direction of one of the structural members is larger on the joint side of the erection material than on the holding side of the fixing member. Ori,
The width of the fixing member sandwiching side is characterized in that it continuously widens toward the bent portion.
In another aspect of the first invention, in the above configuration, the width of the receiving plate in the longitudinal direction of one of the structural members is larger on the joint side of the erection material than on the holding side of the fixing member. Ori,
The width of the bent portion is characterized in that it continuously widens toward the joint side of the erection material.
In another aspect of the first invention, in the above configuration, in the damper mechanism portion, a friction member provided on either one of the fixing member and the receiving plate and a sliding member provided on the other have an external force. It is a friction damper part that generates damping force by moving relative to each other on sliding surfaces that come into contact with each other with input.
A bolt inserted into a long hole provided on either one of the fixing member side and the receiving plate side and an insertion hole provided on the other side, and a nut screwed into the bolt are used to provide the fixing member side. It is characterized in that it is fastened to the receiving plate side so as to be relatively movable.
Here, the "fixing member side" refers to the fixing member and the friction member or the sliding member provided on the fixing member, and the "receiving plate side" refers to the receiving plate and the sliding member or the sliding member provided on the receiving plate. Refers to a friction member.
In another aspect of the first invention, in the above configuration, a pair of surface pressure adjusting plates are arranged outside the pair of receiving plates in the thickness direction of the frame, and the pair of receiving plates are the pair. It is characterized in that it is fastened by the bolt and the nut via the surface pressure adjusting plate of the above.
In another aspect of the first invention, in the above configuration, the width of the surface pressure adjusting plate in the plane direction of the bolt and the frame orthogonal to the receiving plate is the outer diameter of the head of the bolt and the surface. It is characterized in that it is equal to or more than the total thickness of the pressure adjusting plate.
In another aspect of the first invention, in the above configuration, the thickness of the surface pressure adjusting plate is determined by multiplying the axial force of the bolt by a predetermined coefficient, and the coefficient is 0.2 to 0. It is characterized in that it is set in the range of 8.
In order to achieve the above object, the second invention of the present invention is a vibration control frame structure.
The vibration control damper according to any one of claims 1 to 8 is arranged on one of the structural materials in a frame composed of columns and horizontal members, which are structural materials of the building frame, and the frame is provided. It is characterized in that a erection material having one end inserted and joined to the erection material joint side of the receiving plate of the vibration control damper is erected inside.

According to the present invention, a wide erection material can be inserted and joined between a pair of receiving plates, and the erection material and the receiving plate can be assembled without being eccentric to the damper mechanism portion. Therefore, it is possible to effectively prevent the frame from being deformed out of the plane. Further, by suppressing the uneven distribution of the force acting on the damper mechanism portion, it is possible to suppress the damage of the damper mechanism portion and improve the durability.
Further, since the receiving plate has a stepped shape having a bent portion, it is possible to prevent the erection material from coming into contact with the fixing member due to the bent portion when the erection material is inserted and joined. Therefore, since the erection material does not hinder the relative movement in the damper mechanism portion, a stable vibration control effect can be obtained.
In particular, according to another aspect in which the fixing member has a rising portion and the distance from the mounting portion to the bent portion is larger than the rising length of the rising portion, in addition to the above effect, it is inserted and joined to the receiving plate. It is possible to reliably prevent the erected material from coming into contact with the fixing member.
In particular, according to another embodiment in which the width of the fixing member holding side is formed to be continuously widened toward the bent portion, in addition to the above effect, stress concentration at the base portion of the fixing member holding side is suppressed. Therefore, it is possible to prevent the receiving plate from being damaged or deformed at the base portion.
In particular, according to another aspect in which the width of the bent portion is formed so as to be continuously widened toward the joint side of the erection material, in addition to the above effect, stress concentration at the base portion of the bent portion is suppressed. , It is possible to prevent the receiving plate from being damaged or deformed at the base portion.
In particular, the damper mechanism portion is used as a friction damper portion having a friction member and a sliding member, and is provided on the fixing member side by a long hole provided on the fixing member side and a bolt and a nut inserted into an insertion hole provided on the receiving plate side. According to another aspect in which the receiving plate side and the receiving plate side are fastened so as to be relatively movable, in addition to the above effect, effective vibration control performance using the friction damper portion can be obtained.
In particular, according to another embodiment in which a pair of surface pressure adjusting plates are arranged outside the pair of receiving plates and the receiving plates are fastened with bolts and nuts via the surface pressure adjusting plates, in addition to the above effects. The range in which the axial force due to the bolt is borne can be expanded by the surface pressure adjusting plate, and the surface pressure on the sliding surface between the sliding member and the friction member can be reduced. Therefore, it is possible to reduce wear, heat generation, and breakage of the friction surface of the friction member and improve durability.
In particular, according to another embodiment in which the width of the surface pressure adjusting plate in the plane direction of the frame orthogonal to the bolt and the receiving plate is equal to or larger than the sum of the outer diameter of the head of the bolt and the thickness of the surface pressure adjusting plate. In addition to the above effects, it is possible to secure a wide range in which the axial force is transmitted.
In particular, according to another embodiment in which the thickness of the surface pressure adjusting plate is determined by multiplying the axial force of the bolt by a predetermined coefficient and the coefficient is set in the range of 0.2 to 0.8, the above effect is obtained. In addition, the lower limit of the thickness of the surface pressure adjusting plate, which is the limit of damage to the surface of the friction member, and the upper limit of the thickness of the surface pressure adjusting plate, which is the limit of the vibration control function of the friction damper, can be appropriately set. ..

In the explanatory view of the vibration control damper, (A) shows the front surface, (B) shows the plane, and (C) shows the side surface. It is a side view showing the vibration control damper disassembled (excluding bolts, nuts and washers). FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is explanatory drawing which shows the axial force load range of a bolt. It is a front view of a frame. In the explanatory view of the vibration control damper part in the frame, (A) shows the front surface and (B) shows the bottom surface. It is a front view of the frame modification example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Explanation of vibration control damper)
1A and 1B are explanatory views showing an example of a vibration control damper, in which FIG. 1A shows a front surface, FIG. 1B shows a plane surface, and FIG. 1C shows a side surface.
The vibration control damper 1 includes a pair of fixing members 2 and 2, a pair of receiving plates 3 and 3, and a friction damper portion 4 interposed between the fixing members 2 and 2 and the receiving plates 3 and 3. There is.
In the description of the vibration control damper 1 alone, the upper side in FIG. 1A will be described as the upper side and the lower side as the lower side for convenience. Further, for convenience, the right side is to the left and the left side is the left and right direction (direction in which the fixing members 2 and 2 and the receiving plates 3 and 3 move relative to each other due to an external force (movable direction)) in the figure (A) orthogonal to the vertical direction. Explain as the right side. Further, the lower side in the figure (B) is the front side, and the upper side is the rear side.

As shown in FIG. 2, the fixing member 2 has an L-shaped side view and extends upward at right angles to the lower mounting portion 5 mounted on the structural material (for example, a pillar) of the frame and the mounting portion 5. It is provided with an upper rising portion 6. The fixing members 2 and 2 are arranged in symmetrical directions in which the rising portions 6 and 6 abut against each other. A plurality of mounting holes 7, 7, ... For fixing to the structural material are formed in each mounting portion 5. An elongated hole 2a extending in the left-right direction is formed in each rising portion 6.

The receiving plate 3 includes a lower damper fixing portion 10, an upper extension material fixing portion 11, and a bending portion 12 connecting the damper fixing portion 10 and the extension material fixing portion 11. The damper fixing portion 10 has a horizontally long plate shape having a length in the left-right direction shorter than that of the fixing member 2, and is located on the front-rear and outer sides of the rising portion 6 of the fixing member 2. Three insertion holes 13, 13 ... Are formed in the portions of the fixing member 2 in front of and behind the elongated holes 2a at predetermined intervals in the left-right direction.
Further, the upper portion of the damper fixing portion 10 is an upward tapered portion 14 whose width increases to the left and right as it goes upward. The left and right edges of the upward tapered portion 14 are R-shaped.
The extension member fixing portion 11 has a rectangular shape in the front view in which the length in the left-right direction is substantially the same as that of the fixing member 2, and is located on the front-back outside of the damper fixing portion 10. The extension material fixing portion 11 is formed with mounting holes 15, 15 ... For fixing the frame to the erection material, respectively.

The bent portion 12 has a plate shape located on a plane defined in the front-back and left-right directions, and connects the upper end of the damper fixing portion 10 and the lower end of the extension material fixing portion 11. The inner end portion connected to the damper fixing portion 10 has the same width on the left and right as the upward taper portion 14, and the width on the left and right gradually expands from there toward the front, back, outside, and the outer taper on both left and right edges becomes an R shape. It is part 16. The outer end of the outward taper portion 16 is connected to the lower end of the extension member fixing portion 11.
Therefore, the receiving plate 3 has a Z-shaped vertical cross section in which the damper fixing portions 10 and the extension member fixing portions 11 are connected to the front and rear ends of the bent portion 12 alternately in the upper and lower directions.

The friction damper portion 4 includes a pair of sliding plates 20 and 20 and a pair of friction plates 21 and 21.
The sliding plates 20 and 20 are strips that are arranged on the front and rear outer sides of the rising portions 6 and 6 of the fixing members 2 and 2 and extend in the left-right direction at the upper portions of the rising portions 6 and 6. In the sliding plates 20 and 20, long holes 20a and 20a having the same shape as the long holes 2a are formed in the portions of the rising portions 6 and 6 that hit the front and back of the long holes 2a and 2a, as shown in FIG. ..
The friction plates 21 and 21 have a rectangular shape in front view having substantially the same size as the damper fixing portion 10 of the receiving plate 3, and the front and rear thicknesses are larger than those of the sliding plate 20. The friction plates 21 and 21 are arranged between the sliding plates 20 and 20 and the damper fixing portions 10 and 10. The friction plate 21 is formed with three insertion holes 22, 22 ... Located inside the front and rear of the insertion holes 13 provided in the damper fixing portion 10. The surface of the friction plate 21 on the sliding plate 20 side is surface-treated to form a friction surface 21a.

In the friction damper portion 4, the sliding plates 20 and 20 are arranged on the front and rear outer sides of the rising portions 6 and 6 in contact with each other, and the left and right ends of the rising portions 6 and 6 and the sliding plates 20 and 20 are bolted. It is integrally fixed by 23, 23 and nuts 24, 24.
Then, the friction plates 21 and 21 and the damper fixing portions 10 and 10 of the receiving plates 3 and 3 are arranged in this order on the front and rear outside of the sliding plates 20 and 20, respectively, and a pair of surfaces are arranged on the outside of the damper fixing portions 10 and 10. Pressure adjusting plates 25, 25 are arranged.
The surface pressure adjusting plate 25 has a rectangular shape in a front view slightly smaller than the damper fixing portion 10, and its front and rear thickness is larger than that of the friction plate 21. The surface pressure adjusting plate 25 is formed with three insertion holes 26, 26, which are located on the front and rear outer sides of the insertion holes 13, 13, ... Provided in the damper fixing portion 10.
Each member constituting the vibration control damper 1 is made of metal, and in particular, the sliding plate 20 is made of stainless steel.

Here, the elongated holes 2a and 2a of the fixing members 2 and 2, the elongated holes 20a and 20a of the sliding plates 20 and 20, the insertion holes 22 and 22 provided in the friction plates 21 and 21 and the damper fixing portions 10 and 10 are used. Three bolts 30, 30 ... Are passed through the insertion holes 13, 13 provided and the insertion holes 26, 26 provided in the surface pressure adjusting plates 25, 25 from the front, and a plurality of washers 31, 31 are provided at the rear.・ ・ Tighten the nut 32 through. Then, as shown in FIG. 3, the friction plates 21 and 21, the receiving plates 3 and 3 and the surface pressure adjusting plates 25 and 25 are fastened to the fixing members 2 and 2 and the sliding plates 20 and 20.

The vertical width of the surface pressure adjusting plate 25 is set to be equal to or greater than the sum of the outer diameter of the head portion 30a of the bolt 30 and the thickness before and after the surface pressure adjusting plate 25.
Further, there is a correlation between the thickness before and after the surface pressure adjusting plate 25 and the axial force (fastening force) of the bolt 30. For example, in the case of a bolt diameter of 12 mm and a washer diameter of 24 mm, the required thickness (mm) of the surface pressure adjusting plate is 0.4 × (bolt axial force) in the range where the surface pressure per bolt is less than 15 MPa. Will be. The thickness of the surface pressure adjusting plate 25 is determined based on this relationship.
However, the correlation coefficient is 0.2 to 0.2 in consideration of differences in the materials, dimensions, and characteristics of the components of the vibration control damper 1 (for example, differences in bolt diameter, washer diameter, strength of components, surface friction, etc.). It may be set in the range of 0.8.

By adopting the surface pressure adjusting plates 25 and 25, the axial force on the bolt 30 is applied to the receiving plates 3 and 3 and the friction plates 21 and 21 via the surface pressure adjusting plates 25 and 25, so that the axial force of the bolt 30 is increased. The range to be transmitted (the range in which the axial force is borne) is as shown in FIG. Here, it is assumed that the axial force on the bolt 30 is transmitted with a spread of about 45 °. Since this range A1 is wider than the range A2 when the surface pressure adjusting plate 25 is not used, the surface pressure between the sliding plate 20 and the friction plate 21 (sliding surface) at the tightened portion of each bolt 30 is increased. descend.
Then, in the vibration control damper 1, as shown in FIG. 1 (C), from the upper surface of the mounting portion 5 rather than the vertical length L1 from the upper surface of the mounting portion 5 of the fixing member 2 to the upper end of the rising portion 6. The length L2 in the vertical direction up to the upper surface of the bent portion 12 of the receiving plate 3 is larger. That is, the upper surface of the bent portion 12 is located above the upper end of the rising portion 6.

(Explanation of vibration control frame structure)
FIG. 5 is a front view showing an example of a frame 40 in a wooden building. The frame 40 has a base 41 and a beam 42 as a horizontal member, and a pair of columns 43A and 43B erected between the base 41 and the beam 42. A stud 44 is provided between the columns 43A and 43B.
In the frame 40, extension members 45 and 45 are arranged above and below between the intermediate portion of the left pillar 43A and the upper and lower portions of the right pillar 43B to form a so-called K brace. Wood (including laminated lumber) is used for the extension material 45.
Here, the vibration control damper 1 is arranged in the middle portion of the pillar 43A, and one end of the extension members 45, 45 is inserted and joined between the receiving plates 3, 3 to form a vibration control frame structure. That is, as shown in FIG. 6, the fixing members 2 and 2 are vertically oriented along the side surface of the pillar 43A, and the mounting portions 5 and 5 are fixed to the pillar 43A with wood screws 46, 46 ... One ends of the upper and lower extension members 45, 45 are diagonally inserted between the extension member fixing portions 11 and 11 of the receiving plates 3 and 3 in a mated state, and are fixed by wood screws 47, 47. At this time, each one end portion of the extension members 45, 45 abuts on the bent portions 12, 12 of the receiving plates 3, 3 and the movement to the fixing members 2, 2 side is restricted. The other ends of the extension members 45, 45 are fixed to the box-shaped bracket metal fittings 48, 48 fixed to the pillar 43B with wood screws.

When a horizontal external force is repeatedly applied to the frame 40 due to an earthquake or the like and the frame 40 is deformed in the horizontal direction, compressive force and tensile force act alternately on the upper and lower extension members 45 and 45 in the axial direction. Then, in the friction damper portion 4, the fixing members 2 and 2 and the receiving plates 3 and 3 move in the movable direction along the elongated holes 2a and 20a on the sliding surfaces of the sliding plates 20 and 20 and the friction plates 21 and 21. Attempts to relative displacement. When this displacement force is a load that exceeds the frictional resistance between the sliding plates 20, 20 and the friction plates 21 and 21, the sliding plates 20, 20 and the friction plates 21 and 21 slide relatively in the movable direction. Absorb energy.

At this time, the extension members 45 and 45 are sandwiched between the damper fixing portions 10 and 10 of the receiving plates 3 and 3, and the center thereof is the center between the fixing members 2 and 2 (the contact surface between the rising portions 6 and 6). Since they are matched, the deflection of the extension members 45 and 45 out of the plane of the frame 40 can be suppressed. Since the deflection of the extension members 45 and 45 is suppressed, the load applied to the vibration control damper 1 in the out-of-plane direction is also reduced, so that buckling of the vibration control damper 1 is less likely to occur.
Further, the vertical length from the upper surface of the mounting portion 5 to the upper surface of the bent portion 12 of the receiving plate 3 is larger than the vertical length from the upper surface of the mounting portion 5 of the fixing member 2 to the upper end of the rising portion 6. The extension members 45 and 45 do not come into contact with the fixing members 2 and 2 when the fixing member 2 and the sliding plate 20 and the receiving plate 3 and the friction plate 21 move relative to each other.
Further, since the damper fixing portion 10 of the receiving plate 3 is formed with the upward tapered portion 14 and the bent portion 12 is formed with the outward tapered portion 16, stress concentration is relaxed, and the receiving plate 3 is deformed. The mounting rigidity can be maintained by suppressing damage.

(Effect of the invention relating to the vibration control damper and the vibration control frame structure)
As described above, the vibration control damper 1 and the vibration control frame structure of the above-described form are arranged by sandwiching the fixing members 2 and 2 fixed to the pillar 43A (structural material) and the fixing members 2 and 2 in the thickness direction of the frame 40. A pair of receiving plates 3 and 3 to which extension members 45 and 45 (erection materials) erected in the frame 40 are inserted and joined, and between the fixing members 2 and 2 and the receiving plates 3 and 3 are provided. The pair of receiving plates 3, 3 includes a friction damper portion 4 (damper mechanism portion) that generates a damping force with respect to an external force input to the receiving plates 3, 3 via the extension members 45, 45. , Damper fixing portions 10, 10 so that the spacing between the extension material fixing portions 11, 11 (the erection material joining side) is larger than the spacing between the damper fixing portions 10, 10 (fixing member holding side) in the thickness direction. It has a Z-shaped cross section (stepped shape) having bent portions 12 and 12 between the extension member fixing portions 11 and 11.

With this configuration, wide extension members 45, 45 can be inserted and joined between the pair of receiving plates 3, 3, and the extension members 45, 45 and the receiving plates 3, 3 can be joined to the sliding plates 20, 20. It can be assembled without being eccentric with respect to the sliding surface with the friction plates 21 and 21. Therefore, it is possible to effectively prevent the frame 40 from being deformed out of the plane. Further, by suppressing uneven distribution of the force acting on the friction damper portion 4, damage to the friction surface 21a can be suppressed and durability can be improved.
Further, since the receiving plates 3 and 3 have a Z-shaped cross section having the bent portions 12, 12, when the extension members 45 and 45 are inserted and joined, the extension members 45 and 45 are fixed by the bending portions 12 and 12 to the fixing members 2 and 2. It is possible to prevent contact with 2. Therefore, since the extension members 45 and 45 do not hinder the relative movement in the friction damper portion 4, a stable vibration control effect can be obtained.

In particular, the fixing member 2 has a mounting portion 5 fixed to the pillar 43A and a rising portion 6 rising from the mounting portion 5 at a right angle into the frame 40, and the rising length of the rising portion 6 from the mounting portion 5 ( The distance (L2) from the mounting portion 5 to the bent portion 12 of the receiving plate 3 is larger than that of L1).
With this configuration, it is possible to reliably prevent the extension members 45 and 45 inserted and joined to the receiving plates 3 and 3 from coming into contact with the fixing members 2 and 2.
The width of the receiving plate 3 in the longitudinal direction of the pillar 43A is larger in the extension member fixing portion 11 than in the damper fixing portion 10, and the width of the damper fixing portion 10 is continuous toward the bent portion 12. It is an upward taper portion 14 that becomes wider.
With this configuration, stress concentration at the base portion of the damper fixing portion 10 can be suppressed, and damage or deformation of the receiving plate 3 at the base portion can be prevented.
Similarly, since the width of the bent portion 12 is also an outward tapered portion 16 that continuously widens toward the extension material fixing portion 11, stress concentration at the base portion of the bent portion 12 is suppressed and the bending portion 12 is concerned. It is possible to prevent the receiving plate 3 from being damaged or deformed at the base portion.

In the damper mechanism, the friction plates 21 and 21 (friction members) provided on the receiving plates 3 and 3 sides and the sliding plates 20 and 20 (sliding members) provided on the fixing members 2 and 2 sides are used to input external forces. The friction damper portion 4 is a friction damper portion 4 that moves relative to each other on sliding surfaces that come into contact with each other to generate a damping force. The fixing members 2, 2 and sliding are provided by the bolt 30 inserted into the insertion holes 13 and 22 provided in the receiving plates 3 and 3 and the friction plates 21 and 21 (on the receiving plate side) and the nut 32 screwed into the bolt 30. The plates 20 and 20 are fastened to the receiving plates 3 and 3 and the friction plates 21 and 21 so as to be relatively movable.
With this configuration, effective vibration control performance using the friction damper portion 4 can be obtained.

A pair of surface pressure adjusting plates 25, 25 are arranged on the outside of the pair of receiving plates 3, 3 in the thickness direction of the frame 40, and the receiving plates 3, 3 are bolted via the surface pressure adjusting plates 25, 25. It is fastened by 30 and a nut 32.
With this configuration, the range in which the axial force (fastening force) of the bolt 30 is borne is expanded by the surface pressure adjusting plate 25, and the surface pressure on the sliding surface of the sliding plates 20 and 20 and the friction plates 21 and 21 is reduced. be able to. Therefore, it is possible to reduce wear, heat generation, and breakage of the friction surface 21a of the friction plates 21 and 21 and improve durability.

The width of the surface pressure adjusting plate 25 in the surface direction (vertical direction in FIG. 1A) of the frame 40 orthogonal to the bolt 30 and the receiving plate 3 is the outer diameter of the head 30a of the bolt 30 and the surface pressure adjusting plate. It is more than the total with the thickness of 25.
With this configuration, it is possible to secure a wide range in which the axial force is transmitted.
The thickness of the surface pressure adjusting plate 25 is determined by multiplying the axial force of the bolt 30 by a predetermined coefficient, and the coefficient is set in the range of 0.2 to 0.8.
With this configuration, the lower limit of the thickness of the surface pressure adjusting plate 25, which is the limit of damage to the surface of the friction plates 21 and 21, and the upper limit of the thickness of the surface pressure adjusting plate 25, which is the limit of the vibration control function of the friction damper portion 4, are appropriate. Can be set to.

(Explanation of change example)
The shape of the fixing member is not limited to the above form and can be changed as appropriate. The structure is not limited to a structure in which a pair of fixing members are butted against each other, and an inverted T-shaped member or the like having one rising portion in the center may be used.
The receiving plate is not limited to the Z-shaped cross section of the above-mentioned form, and a different stepped shape can be adopted as long as it has a bent portion to which the extension member to be inserted and joined abuts. For example, the bent portion may be formed at an angle so as to incline upward toward the front-back and outer sides so that the pair of bent portions have a tapered shape.
The shape of the upward taper portion of the damper fixing portion and the outward taper portion of the bent portion can be appropriately changed, and the both side edges may be linear instead of R-shaped. It is also possible to have a structure in which one or both of the upward taper portion and the outward taper portion are not provided.
In the above embodiment, the left-right width of the damper fixing portion is smaller than the left-right width of the extension material fixing portion, but both fixing portions may have the same left-right width.

In the friction damper portion, the positions of the sliding plate and the friction plate may be reversed from the above-mentioned form. The relationship between the elongated hole and the insertion hole may be reversed.
The sliding plate is not limited to the structure of fixing to the fixing member or the receiving plate with bolts and nuts, and may be fixed by other fixing means such as welding. Further, the fixing member or the receiving plate may be surface-treated to form a sliding surface, so that the fixing member or the receiving plate may also be used as the sliding member. Similarly, by forming a friction surface on the receiving plate or the fixing member, it may also be used as the friction member.
A plurality of surface pressure adjusting plates may be stacked instead of one. In this case, the width of the surface pressure adjusting plate on the receiving plate side can be made larger than the width of the surface pressure adjusting plate on the bolt head side. However, the surface pressure adjusting plate can be omitted.
The number of bolts that fasten the friction damper can also be increased or decreased.
However, the damper provided in the damper mechanism is not limited to the friction damper. For example, a viscoelastic damper or the like in which a viscoelastic body is interposed between the fixing member and the receiving plate can be adopted.

In the vibration control frame structure, the K brace may be symmetrical with the above-mentioned form with the pillar on which the vibration control damper is provided on the right side.
The vibration control damper 1 may be provided not only at the K brace but also at the joint portion between the lower end portion of the brace 50 (erection material) erected diagonally and the pillar 43A on the left side, as in the frame 40A shown in FIG. In this case, since one brace 50 is inserted and joined to the extension material fixing portion 11 of the receiving plate 3, the shape is not symmetrical and protrudes upward from the fixing member 2. The vibration control damper 1 may be provided at the joint portion between the upper end portion of the brace 50 and the pillar 43B on the right side, or the brace 50 may be installed diagonally opposite to that in FIG. 7.
In addition, not limited to K braces and diagonal braces, a pair of seismic damping damper fixing members are attached to either the upper surface of the base or the lower surface of the beam and erected from both sides of the opposite beam or both sides of the base. The vibration control damper and vibration control frame structure of the present invention can be adopted even in the so-called beam type in which the brace is inserted and joined to the plate. In this case, instead of a pair of braces, a trapezoidal erection plate (erection material) may be used to insert and join the receiving plate.
The vibration control damper is not limited to the form in which the fixing member is directly fixed to the structural material such as a pillar, but the fixing member is indirectly fixed via another member (brace, erection plate, etc.) joined to the structural material. It may be in the form.
The frame is not limited to a wooden structure, and a frame having another structure such as a lightweight steel structure may be used. The extension material is not limited to wood, but metal can also be used.

1 ・ ・ Vibration control damper, 2 ・ ・ Fixing member, 2a, 20a ・ ・ Long hole, 3 ・ ・ Receiving plate, 4 ・ ・ Friction damper part, 5 ・ ・ Mounting part, 6 ・ ・ Rising part, 10 ・ ・ Damper Fixing part, 11 ... Extension material fixing part, 12 ... Bending part, 13, 22, 26 ... Insertion hole, 14 ... Upward taper part, 16 ... Outer taper part, 20 ... Sliding plate, 21 ...・ Friction plate, 25 ・ ・ Surface pressure adjustment plate, 40 ・ ・ Frame, 41 ・ ・ Base, 42 ・ ・ Beam, 43A, 43B ・ ・ Pillar, 45 ・ ・ Extension material.

Claims (9)

It is a vibration control damper arranged in a frame consisting of columns and horizontal members, which are the structural materials of the building frame.
A fixing member fixed to either one of the structural members,
A pair of receiving plates that are arranged so as to sandwich the fixing member in the thickness direction of the frame and into which the erection material to be erected in the frame is inserted and joined.
A damper mechanism portion provided between the fixing member and the receiving plate and generating a damping force with respect to an external force input to the receiving plate via the erection material is included.
The pair of receiving plates have a bent portion between the fixing member holding side and the erection material joining side so that the distance between the fixing member holding side and the erection material joining side is larger than the distance between the fixing member holding side in the thickness direction. A vibration control damper characterized by having a stepped shape. The fixing member has a mounting portion fixed to the one structural member side and a rising portion that rises at a right angle from the mounting portion into the frame, and is longer than the rising length of the rising portion from the mounting portion. The vibration control damper according to claim 1, wherein the distance from the mounting portion to the bent portion of the receiving plate is larger. The width of the receiving plate in the longitudinal direction of one of the structural members is larger on the joint side of the erection material than on the holding side of the fixing member.
The vibration control damper according to claim 1 or 2, wherein the width of the fixing member sandwiching side is continuously widened toward the bent portion. The width of the receiving plate in the longitudinal direction of one of the structural members is larger on the joint side of the erection material than on the holding side of the fixing member.
The vibration control damper according to any one of claims 1 to 3, wherein the width of the bent portion is continuously widened toward the joint side of the erection material. In the damper mechanism portion, the friction member provided on either one of the fixing member and the receiving plate and the sliding member provided on the other move relative to each other on a sliding surface that comes into contact with each other due to the input of an external force. It is a friction damper part that generates damping force.
A bolt inserted into a long hole provided on either one of the fixing member side and the receiving plate side and an insertion hole provided on the other side, and a nut screwed into the bolt are used to provide the fixing member side. The vibration control damper according to any one of claims 1 to 4, wherein the receiving plate side is fastened so as to be relatively movable. A pair of surface pressure adjusting plates are arranged outside the pair of receiving plates in the thickness direction of the frame, and the pair of receiving plates are formed by the bolts and the nuts via the pair of surface pressure adjusting plates. The vibration control damper according to claim 5, wherein the damper is fastened. The width of the surface pressure adjusting plate in the plane direction of the frame orthogonal to the bolt and the receiving plate is characterized by being equal to or more than the sum of the outer diameter of the head of the bolt and the thickness of the surface pressure adjusting plate. The vibration control damper according to claim 6. The thickness of the surface pressure adjusting plate is determined by a value obtained by multiplying the axial force of the bolt by a predetermined coefficient, and the coefficient is set in the range of 0.2 to 0.8. The vibration control damper according to 6 or 7. The vibration control damper according to any one of claims 1 to 8 is arranged on one of the structural materials in a frame composed of columns and horizontal members, which are structural materials of the building frame, and the frame. A seismic control frame structure in which a erection material having one end inserted and joined to the erection material joint side of the receiving plate of the seismic control damper is erected inside.

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