JP2018076639A - Seismic response control apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve energy absorption efficiency by providing the rigidity to the plastic deformation part of a hysteresis damper that absorbs an external force like compressive force or tensile force applied to structural members of a building or a structure, and to facilitate attachment.SOLUTION: Reinforcement members 11, 12 are installed in a rectangular space formed by sills of a building and a structure and structural members like columns and horizontal members, and a hysteresis damper 20 capable of absorbing an external force like compressive force PA and tensile force PB applied to the reinforcement members is included. The hysteresis damper 20 is formed of an aluminum shape that has a pair of side pieces 21 with each one end connected to the reinforcement members, and a plurality of hollow parts 23 formed of corrugated ribs 22 connecting the side pieces to each other. Corrugated ribs 22 have bent parts 22a and tapered parts 25 thickening from the bent parts 22a toward the side pieces.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vibration control device that suppresses shaking of a building or a building due to an external force during an earthquake or a strong wind, for example.

  Conventionally, a reinforcing member is installed between a pillar and a base or a horizontal member in a rectangular space formed by a structural member such as a building or a base of a building and a column and a horizontal member, and between the reinforcing members. There is known a vibration control structure (also called a vibration control structure) including a hysteresis damper formed of an aluminum shape material capable of absorbing external force such as compressive force and tensile force applied to the structural member (for example, patent) References 1 and 2).

  In the vibration control device described in Patent Document 1, a plurality of hollow portions are formed by a plurality of corrugated ribs curved in an uneven shape between opposing plate portions, and connection points between both end portions of the ribs and the plate portions are formed. It is deviated in the direction of action of external force (compression / tensile direction), and the curved direction of the ribs is formed in a direction opposite to each other between two adjacent ribs.

  According to the vibration control device described in Patent Document 1, the hysteresis damper generates vibration energy by causing plastic deformation of the cross-sectional shape, particularly the rib curved portion, by compression / tensile force applied to a structural member such as a building or a building. Can be absorbed.

  Further, in the vibration damping device described in Patent Document 2, the hysteresis dampers are equidistantly spaced in a state where the opposing positions of the inner side surfaces along the longitudinal direction of the side pieces are slightly deviated from the hollow rectangular outer shell base portion having a pair of side pieces. A hollow portion formed by corrugated ribs curved in a concave and convex arc shape connected to each other, and at the tip end portion of the reinforcing member, a notch portion is formed to prevent interference with each other by the action of an external force, and The connecting piece is fixed in a state of being in surface contact with the outer surface of the opposing side piece along the longitudinal direction of the hysteresis damper.

  According to the vibration control device described in Patent Document 2, the hysteresis damper is not only inserted between the reinforcing members, but also fixed to the reinforcing member over the entire longitudinal direction of the hysteresis damper. As well as deformation of the hysteresis damper other than the longitudinal direction of the reinforcing member, that is, buckling of the hysteresis damper.

Japanese Patent No. 5897246 (FIG. 15) Japanese Patent Laying-Open No. 2012-251364 (paragraph 0024, FIG. 7)

However, in the structures described in Patent Documents 1 and 2, since the thickness of the corrugated rib is constant, the deformed portion is limited to the connecting portion and the bent portion between the rib and the side piece (plate portion), There is a concern that the hysteresis damper cannot cope with deformation that absorbs larger vibration energy.
In order to increase the absorption capacity of large vibration energy, it is conceivable to increase the number of ribs. However, increasing the number of ribs increases the size of the hysteresis damper, which makes it difficult to produce a hysteresis damper made of an aluminum profile. Become.

  In addition, the reinforcing member is generally installed at a position corresponding to the brace, but if it is installed in such a manner, the connecting position between the reinforcing member and the frame is the corner of the column-base or the column-horizontal material (beam). Therefore, there is a concern that the attachment of the reinforcing member itself becomes troublesome.

  The present invention has been made in view of the above circumstances, and the plastic deformation portion of a hysteresis damper that absorbs external force such as compressive force and tensile force applied to a structural member constituting a building or a structure is given rigidity and energy. It is an object of the present invention to provide a vibration control device that can improve the absorption efficiency and can be easily attached.

  In order to achieve the above object, the vibration damping device according to the present invention lays a reinforcing member in a rectangular space formed by a structural member such as a building or a base of a building and a pillar and a horizontal member, and A vibration damping device including a hysteresis damper capable of absorbing an external force such as a compressive force and a tensile force applied to the reinforcing member, wherein the hysteresis damper includes a pair of side pieces each connected to the reinforcing member, It is formed of an aluminum shape member having a plurality of hollow portions formed by corrugated ribs connecting the side pieces, and the corrugated rib has a bent portion, from the bent portion toward the side piece side. It has a taper part which becomes thick (Claim 1).

  With this configuration, when an external force such as a compressive force and a tensile force applied to the structural member acts on both side pieces of the hysteresis damper, the connecting portion between the side piece and the corrugated rib and the bent portion of the corrugated rib are plastically deformed. Vibration energy can be absorbed. At this time, since the corrugated rib has a taper portion that becomes thicker from the bent portion toward the side piece side, the plastic deformation portion of the connecting portion between the side piece and the corrugated rib is given rigidity and deformed. Since the area is expanded inward of the hysteresis damper and the bent portion is also deformed, it is possible to cope with a large deformation.

  In the present invention, it is preferable that a plurality of straight ribs parallel to each other are provided between the inner surfaces of the symmetrical positions of both ends in the longitudinal direction of the pair of side pieces.

  With this configuration, by providing a plurality of straight ribs parallel to each other between the inner side surfaces at symmetrical positions on both ends in the longitudinal direction of the side piece across the corrugated rib, the corrugated rib is plastically deformed. Thus, when absorbing vibration energy, the distance between the side pieces can be kept constant, and deformation other than the shear direction of the hysteresis damper can be suppressed.

  In the present invention, the reinforcing member includes an upper reinforcing member whose one end is attached to the horizontal member side of the column and a lower reinforcing member whose one end is attached to the base side of the column, and the upper reinforcing member And the lower reinforcing member are formed in a slidable rectangular tube shape, and one upper or lower reinforcing member located on the inner side has a cutout portion in which one side of the rectangular tube is cut out, The history damper is inserted into the cutout portion of the one reinforcing member, and one side piece of the history damper is connected by a connecting member, and the other side piece of the history damper is the lower or upper portion of the other It is preferable that it is connected to the reinforcing member by a connecting member (Claim 3).

  With this configuration, the hysteresis damper and the reinforcing member can be firmly connected, and the connection between the upper reinforcing member and the lower reinforcing member constituting the reinforcing member can be strengthened.

  In addition, in the present invention, a connection member fixed to the longitudinal end of the reinforcing member, and a support member fixed to the base side of the pillar and the horizontal member side, the connection member is A fixing portion fixed to the reinforcing member, and a connection portion protruding from the fixing portion, and the support member has a channel shape having standing pieces on both sides of the fixing piece fixed to the column. It is preferable to have a pair of support pieces raised at the upper ends of both upright pieces, and pivotally supported by a pivot pin in a state where the connection portion of the connection member is disposed between the support pieces ( Claim 4).

  By comprising in this way, while being able to attach a reinforcement member to the horizontal member side of a pillar, and the base of a pillar, it can be pivotally attached with respect to the side of a pillar.

  According to this invention, since it is configured as described above, the following remarkable effects can be obtained.

  (1) According to the invention described in claim 1, the plastic deformation portion of the hysteresis damper that absorbs external force such as compressive force and tensile force applied to the structural member constituting the building or structure is provided with rigidity, Since the deformation region is expanded to the inner side of the hysteresis damper and the bent portion is also deformed, the energy absorption efficiency can be improved. In addition, since the hysteresis damper can cope with a large deformation, it is possible to facilitate attachment of the rectangular space formed by the structural member other than the diagonal position.

  (2) According to the invention described in claim 2, when the wave-shaped rib plastically deforms and absorbs vibration energy, the distance between the side pieces is kept constant, and deformation of the hysteresis damper other than the shear direction is suppressed. Therefore, in addition to the above (1), the hysteresis damper can be given further rigidity and the energy absorption efficiency can be improved.

  (3) According to the invention described in claim 3, it is possible to strengthen the connection between the hysteresis damper and the reinforcing member and to strengthen the connection between the upper reinforcing member and the lower reinforcing member constituting the reinforcing member. Therefore, in addition to the above (1) and (2), the compressive force and tensile force can be evenly transmitted to the hysteresis damper, and the hysteresis damper is deformed in the direction other than the longitudinal direction of the reinforcing member, that is, the hysteresis damper is prevented from buckling. Can be planned.

  According to the invention of claim 4, the reinforcing member can be attached to the horizontal member side of the column and the base side of the column, and can be pivotally attached to the side surface of the column. In addition to the above (1) to (3), the attachment of the reinforcing member can be facilitated.

It is a schematic front view (a) which shows the use condition of the damping device which concerns on this invention, and the I section enlarged view (b) of (a). It is the front view (a) which shows a part of principal part of the said damping device in a cross section, and the top view (b) of (a). It is explanatory drawing (b) which isolate | separates and shows the half part of the corrugated rib of II part of (a) and (a) which shows the log | history damper in this invention. It is a perspective view showing a history damper in this invention. It is a disassembled perspective view which shows the hysteresis damper in this invention, an upper reinforcement member, and a lower reinforcement member. It is a disassembled perspective view which shows the lower reinforcement member and upper reinforcement member which inserted the said hysteresis damper. It is a perspective view which shows the state which interposed the hysteresis damper between the said upper reinforcement member and the lower reinforcement member. It is a partial cross-sectional exploded perspective view which shows another form of the lower reinforcement member in this invention, the said reinforcement member, and a hysteresis damper. It is a perspective view which shows the state which inserted the hysteresis damper in the said lower reinforcement member. It is a front view which shows the attaching part of the upper reinforcement member in this invention. FIG. 6B is a side view of FIG. 6A. It is a disassembled perspective view which shows the connection member, support member, and pivot pin in this invention.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated in detail based on an accompanying drawing. Here, a case where the vibration control device according to the present invention is applied to, for example, a wooden building will be described.

As shown in FIG. 1, the seismic control device according to the present invention includes a base 1 of a building, columns 2 a, 2 b erected on the base 1, and spans, for example, girders that are horizontally mounted on the upper ends of the columns 2 a, 2 b. A plurality of, for example, upper and lower reinforcing members 11, 12 are placed diagonally between the pillars 2 a, 2 b and the base 1 or the horizontal member 3 in a rectangular space 4 formed of a structural member such as the horizontal member 3. In addition, the external force such as compressive force and tensile force applied to the structural member can be absorbed between the upper and lower reinforcing members 11 and 12, that is, the vibration energy due to the external force such as compressive force and tensile force is absorbed and attenuated. A history damper 20 is interposed. In this case, two history dampers 20 are connected in the longitudinal direction.
The pillars 2 a and 2 b and the base 1 or the horizontal member 3 are fixed by an angle-shaped metal fitting 5 and a straight holding metal fitting 6.

  As shown in FIGS. 1 to 4, the hysteresis damper 20 slightly deviates the facing position of the inner side surface along the longitudinal direction of the pair of side pieces 21, one of which is connected to the upper and lower reinforcing members 11 and 12, respectively. It has a plurality of (three) hollow portions 23 formed by corrugated ribs 22 having concave and convex arc-shaped bent portions 22a that are connected at equal intervals in the state, and at both ends in the longitudinal direction of the pair of side pieces 21 It is formed by an aluminum extruded shape having a plurality of, for example, two straight ribs 24 parallel to each other between the inner side surfaces at symmetrical positions. Note that both ends in the longitudinal direction of the both side pieces 21 protrude outward from the straight ribs 24.

  In this case, as shown in FIG. 3, the corrugated rib 22 has a curved taper portion 25 that becomes thicker from the bent portion 22 a toward the side one side, and the opposing portion is formed 180 degrees rotationally symmetrical. And the adjacent wave-shaped rib 22 is formed symmetrically with respect to the center between adjacent. In addition, the thickness T1 of the connection part with the side piece 21 of the waveform rib 22, ie, the base end part 25a of the taper part 25, is thicker than the thickness T of the side piece 21, and the thickness T2 of the center part of the waveform rib 22 is The side piece 21 is thinner than the thickness T. Further, the thickness T3 of the straight rib 24 is smaller than the thickness T of the side piece 21.

  The reason why the connecting positions of both ends of the corrugated ribs 22 and the side pieces 21 are slightly deviated at the opposing positions is that the corrugated ribs 22 are deformed by external forces such as a compressive force PA and a tensile force PB acting on the hysteresis damper 20. This is to make it easier. A plurality of attachment holes 26 are formed in the side pieces 21 at appropriate intervals on a center line along the longitudinal direction (see FIG. 4). In this case, the attachment holes 26 are provided at a plurality of locations including at least both ends of the hysteresis damper 20 in the longitudinal direction.

  The hysteresis damper 20 formed as described above is formed symmetrically with respect to the center line C1 between the side pieces 21 and the center line C2 in the longitudinal direction of the side pieces 21 (see FIG. 3A).

  The upper and lower reinforcing members 11 and 12 are formed to be slidable with respect to each other, with the base end portions, that is, the upper end portion of the upper reinforcing member 11 and the lower end portion of the lower reinforcing member 12 fixed by a support member 40 described later. It is formed of a rectangular hollow aluminum extruded shape.

In this case, as shown in FIGS. 5A to 5C, the lower reinforcing member 12, which is one of the reinforcing members located on the inward side, has a cutout portion 13 in which one side of the upper side of the rectangular tube is cut out on the distal end side. Is provided. Two hysteresis dampers 20 are inserted into the notch 13 with the tips of the two side pieces 21 in contact with each other, and one side piece 21 of the hysteresis damper 20 is provided on the upper reinforcing member 11. The mounting hole 11a and the side piece 21 are connected by a connecting screw 27 which is a connecting member passing through the mounting hole 26 provided in the side piece 21.
The other side piece 21 of the hysteresis damper 20 is connected to the upper reinforcing member 11 by a connecting screw 27 penetrating the mounting hole 12 a provided in the lower reinforcing member 12 and the mounting hole 26 provided in the side piece 21. ing.

In this case, a gap of 0.5 mm is provided between the hysteresis damper 20 and the lower reinforcing member 12, and a gap of 1.0 mm is provided between the lower reinforcing member 12 and the upper reinforcing member 11.
Thus, the hysteresis damper 20, the upper reinforcing member 11, and the hysteresis damper 20 are provided by providing as small a gap as possible so as not to interfere with each other between the hysteresis damper 20 and the lower reinforcing member 12 and between the lower reinforcing member 12 and the upper reinforcing member 11. When the lower reinforcing member 12 comes into contact, local deformation is restrained so that local buckling does not occur.

In the above description, the notch portion 13 has been described as having a shape in which the leading end side of the top side of the rectangular tube is notched, but as shown in FIGS. 5D and 5E, The connecting piece 14 may be left at the tip of the upper side of the square tube of the reinforcing member 12, and the rectangular cutout portion 13A may be formed by leaving a pair of lip pieces 15 at the upper ends of both sides of the square tube. .
Thus, by closing the front end side of the notch 13A with the connecting piece 14 and making it rectangular, the lower reinforcing member 12 can be given rigidity, and on both sides in the longitudinal direction of the notch 13A. By leaving the lip piece 15, it is possible to obtain an elongated ratio and to have a shape advantageous for local buckling.

  In the above description, the case where the lower reinforcing member 12 is positioned in the upper reinforcing member 11 has been described. However, the upper reinforcing member 11 is positioned in the lower reinforcing member 12 and the notch 13 is formed in the upper reinforcing member 11. May be provided, and the hysteresis damper 20 may be disposed in the notch 13 so that both side pieces 21 of the hysteresis damper 20 are connected to the upper reinforcing member 11 and the lower reinforcing member 12, respectively.

  Next, the attachment structure of the upper and lower reinforcing members 11 and 12 will be described. Since the mounting structure of the upper and lower reinforcing members 11 and 12 is the same, here, the upper reinforcing member 11 will be described as a representative.

  As shown in FIGS. 6A, 6B, and 7, the upper reinforcing member 11 is fixed to the connecting member 30 that is fixed to the longitudinal end portion of the upper reinforcing member 11 and the horizontal members of the columns 2a and 2b. The support member 40 is attached in a state of being pivotally attached to the support pin 50.

  In this case, the connecting member 30 is formed in a U-shape including a pair of leg pieces 31a inserted into the end portion of the upper reinforcing member 11 and fixed by the fixing screw 33, and a rolling piece 31b that couples both leg pieces 31a. The fixed portion 31 and the connecting portion 32 having a thick portion 32a that protrudes orthogonally to the connecting piece 31b of the fixed portion 31 and has a through hole 32b provided near the tip are integrally formed. The connecting member 30 is formed of, for example, an aluminum extruded shape. The leg piece 31a is provided with a plurality of screw holes 31c into which the fixing screws 33 are screwed.

  On the other hand, the support member 40 is formed in a channel shape having upright pieces 42 on both sides of an elongated rectangular fixed piece 41 fixed to the pillars 2a and 2b, and rises in an arc shape at the upper ends of both upright pieces 42. It has a pair of support pieces 43 provided with through holes 44. The fixing piece 41 is provided with mounting holes 41a for fixing screws 45 in a staggered manner. The support member 40 is formed of, for example, an aluminum extruded shape.

  To attach the upper reinforcing member 11, first, the support member 40 is fixed to the side surface of the pillars 2 a and 2 b on the side of the horizontal member 3 with the fixing screw 45. Then, in a state where the connection portion 32 of the connection member 30 is disposed between the support pieces 43 of the support member 40, the pivot pin 50 is inserted into the through hole 44 provided in the support piece 43 and the through hole 32 b provided in the connection portion 32. , And a bifurcated retaining pin 52 is fitted into an annular groove 51 provided around the distal end of the pivot pin 50 to pivot the upper reinforcing member 11 to the support member 40.

  Similarly, the lower end portion of the lower reinforcing member 12 is pivotally attached to the support member 40 fixed to the side surface of the pillars 2a and 2b on the base 1 side by a pivot pin 50.

  According to the vibration damping device of the embodiment configured as described above, when external forces such as the compressive force PA and the tensile force PB act on the structural members constituting the building, the load is evenly applied to the both side pieces 21 of the hysteresis damper 20. In addition, the connecting portion between the side piece 21 and the wave-shaped rib 22 and the bent portion 22a of the wave-shaped rib 22 can be plastically deformed to absorb vibration energy. At this time, since the corrugated rib 22 has a thick taper portion 25 on the side piece 21 side, the plastic deformation portion of the connecting portion between the side piece 21 and the corrugated rib 22 is given rigidity, and the deformation region Is expanded inward of the hysteresis damper 20, and the bent portion 22a is also deformed, so that a large deformation can be accommodated.

  Further, by providing a plurality (two) of straight ribs 24 parallel to each other between the inner side surfaces at symmetrical positions at both ends in the longitudinal direction of the side piece 21 sandwiching the corrugated ribs 22, the corrugated ribs 22 are plastic. When deforming and absorbing vibration energy, the distance between the side pieces 21 can be kept constant, and deformation other than the shear direction of the hysteresis damper 20, that is, collapse of the hysteresis damper 20 can be suppressed.

  In addition, the upper reinforcing member 11 and the lower reinforcing member 12 are formed in a rectangular tube shape that is slidable with respect to each other, and the lower reinforcing member 12 positioned on the inner side has a cutout portion 13 in which one side of the rectangular tube is cut out. The hysteresis damper 20 is inserted into the notch 13 of the lower reinforcing member 12, and one side piece 21 is connected, and the other side piece 21 of the history damper 20 is connected to the upper reinforcing member 11. Thus, the hysteresis damper 20 and the upper and lower reinforcing members 11 and 12 can be strongly connected, and the connection between the upper reinforcing member 11 and the lower reinforcing member 12 can be strengthened. Therefore, the compressive force PA and the tensile force PB can be equally transmitted to the hysteresis damper 20, and deformation of the hysteresis damper 20 other than in the longitudinal direction of the upper and lower reinforcing members 11, 12 can be prevented, that is, the hysteresis damper 20 can be prevented from buckling. .

  Since the hysteresis damper 20 can cope with a large deformation, the upper and lower reinforcing members 12 can be attached to the horizontal member side of the columns 2a and 2b and the base side of the columns 2a and 2b, and the side surfaces of the columns 2a and 2b. The upper and lower reinforcing members 11 and 12 can be easily attached by pivotally attaching to each other.

  In the above-described embodiment, the case where two hysteresis dampers 20 are connected in the longitudinal direction has been described. However, the number of hysteresis dampers 20 may be arbitrary. For example, one hysteresis damper 20 is connected to the upper and lower reinforcing members 11. , 12 may be interposed.

  Moreover, although the said embodiment demonstrated the case where the damping device which concerns on this invention was applied to a wooden building, this invention accommodates the structure of steel structures other than a wooden building, or an electronic device, for example It can also be applied to racks and the like.

DESCRIPTION OF SYMBOLS 1 Base 2a, 2b Column 3 Horizontal member 4 Space part 11 Upper reinforcement member 12 Lower reinforcement member 13, 13A Notch part 20 History damper 21 Side piece 22 Wave-shaped rib 22a Bending part 23 Hollow part 24 Straight rib 25 Tapered part 27 Connection screw (connection member)
30 connection member 31 fixed part 32 connection part 40 support member 41 fixed piece 42 upright piece 43 support piece 50 pivot pin PA compressive force PB tensile force

Claims (4)

A reinforcing member is installed in a rectangular space formed by a structural member such as a building and a base of a building and a pillar and a horizontal member, and an external force such as a compressive force and a tensile force applied to the reinforcing member can be absorbed. A vibration control device with a history damper,
The hysteresis damper is formed of an aluminum shape member having a plurality of hollow portions formed by a pair of side pieces, one of which is connected to the reinforcing member, and a wave-shaped rib connecting the side pieces,
The corrugated rib has a bent portion, and has a tapered portion that becomes thicker from the bent portion toward the one side of the side,
A vibration control device characterized by that. The vibration control device according to claim 1,
A plurality of straight ribs parallel to each other are provided between inner side surfaces at symmetrical positions at both ends in the longitudinal direction of the pair of side pieces, and the vibration control device is characterized in that The vibration control device according to claim 1 or 2,
The reinforcing member includes an upper reinforcing member whose one end is attached to the horizontal member side of the column and a lower reinforcing member whose one end is attached to the base side of the column, and the upper reinforcing member and the lower reinforcing member are mutually connected. One upper or lower reinforcing member that is formed in a slidable rectangular tube shape and that is located on the inner side has a cutout portion in which one side of the rectangular tube is cut out, and the hysteresis damper includes the one And the one side piece of the hysteresis damper is connected by a connecting member, and the other side piece of the hysteresis damper is connected to the other lower or upper reinforcing member as a connecting member. A vibration control device characterized by being connected to each other. The vibration control device according to any one of claims 1 to 3,
A connecting member fixed to an end portion in the longitudinal direction of the reinforcing member; and a supporting member fixed to the base side and the horizontal member side of the column. The connecting member is fixed to the reinforcing member. And the support member is formed in a channel shape having standing pieces on both sides of the fixing piece fixed to the column, and the both standing parts. A vibration control device having a pair of support pieces protruding at the upper end of the piece, and being pivotally attached by a pivot pin in a state in which the connection portion of the connection member is disposed between the support pieces. .

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