JP5269475B2 - Vibration control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lowcost seismic response control device which can sufficiently suppress the deformation of a building structural frame by earthquake force, and prevent the destruction of the building structural frame. <P>SOLUTION: The seismic response control device 1 is made by diagonally fixing seismic response control elements 6 made of a band steel plate consisting of low yield point steel and attached to the middle of vertical members 3 facing each other of the building structural frame 2, and the corners of the building structural frame 2 with diagonal members 5. The seismic response control element 6 is formed in a shape comprising frame mounting surface portions 8 on both ends for attaching the element 6 to the vertical member 3 of the building structural frame 2, a pair of rise portions 9 each formed through a first bent portion 11 bent toward the inside of the building structural frame 2 from the frame mounting surface portion 8, an upper side surface portion 10 formed through a second bent portion 12 bent parallel to the frame mounting surface portions 8 from the rise portions 9, and a diagonal member mounting plate 16 integrally formed so as to rise from the upper side surface portion 10 and attached with one end of each diagonal member 5. Through hole 17 are bored in the vicinity of at least one of bending starting points 11A, 12A of the bent portions 11, 12 in the rise portions 9. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a vibration control device that is attached to a structural frame of a steel structure or wooden structure building and has a vibration control function of the building.

Relatively small-scale buildings are generally lightweight, and it is difficult to absorb vibrations by an elastic body. Various materials and their working mechanisms have been tried, and those conventional examples are disclosed in Patent Document 1, for example. Documents 1 and 2 are described.
JP 2006-307527 A Catalog “i2s2 CORPORATED PROFILE” i2s2 Co., Ltd. issued in November 2003 Noise control magazine Vol. 23 No. 6 Japan Society for Noise Control Engineering December 1999 (Left column on page 398)

  Patent Document 1 describes a technique using a metal elastic bending spring having a substantially Ω shape, and the area of the bending portion of the elastic bending spring so as to adapt to vibration in a three-dimensional direction at the time of loading. And a slit is provided in the vertical direction so as to connect the upper and lower curved portions of the rising surface.

  In the small-scale experiment of the elastic curved spring having the slit, a predetermined result was obtained, but in the static full-scale experiment, deformation repeatedly concentrated on the root of the bent portion, and the root of the bent portion 12 as shown in FIG. Has been confirmed to be easily broken.

  An object of the present invention is to provide a vibration control device having stable deformation and vibration absorption performance even in a dynamic vibration experiment.

  In the present invention, in order to solve the above-mentioned problem, a vibration control element made of a strip steel plate made of a low yield point steel attached to an intermediate portion of opposing vertical members of a building structure frame, and a corner portion of the building structure frame Is a diagonal device that is diagonally fixed with diagonal materials, wherein the vibration control element includes frame mounting surface portions at both ends for mounting on the vertical members of the building structural frame, and each frame mounting surface portion from the building. It is formed through a pair of rising parts formed through the first bending part, which is bent toward the inside of the structural frame, and a second bending part which is bent in parallel from the rising part to the frame mounting surface part. It has a shape having an upper side surface part and an oblique material mounting plate formed integrally rising from the upper side surface part and to which one end of the diagonal material is attached, and a through-hole is formed in at least one of the rising parts in the vicinity of the bending start points of the two bent parts A seismic control device characterized in that .

Unlike the prior art, the present invention does not use the repulsive force of the elastic spring, and the seismic force acting on the building structure frame by the plastic bending deformation of the above-mentioned damping device (seismic element) made of a low yield point steel plate. Absorb.
The technology of “Patent Document 1” is a shock absorber for a building that uses the repulsive force of a metal elastic spring having a Ω-shaped cross section made of a steel plate or a spring steel plate. It is engraved and acts effectively on the force applied in the three-dimensional direction.
The action of the spring is governed by the principle of the vibration system of the weight and the spring. If the weight (the weight of the building) is light, the force of the spring will be weak, and if it is not soft, the spring will not work, and it will not be possible to moderate the vibration during an earthquake. . Further, since the spring is softened and the longitudinal slit is cut, the cross section of the cross section of the metallic elastic spring is broken, so that it is broken due to the settling due to harmful deformation of the bent portion 12 as shown in FIG. It can be crushed. This is also the limit of seismic control by metallic elastic springs.

In order to solve such problems of the prior art, in the present invention, instead of the prior art, a substantially groove-shaped elasto-plastic steel plate damper (refer to “Non-patent Document 2”) made of a low-yield-point steel strip. A new seismic control device is developed, and based on the bending moment diagrams in Figs. 9 (a) and 9 (b), which examine the bending moment generated in the cross-section by horizontal force, it is optimal for solving the above problems. The cross-sectional shape was determined.
9 (a) and 9 (b), the bending moment generated in the groove-shaped cross section of the elastic curved spring such as Ω shape or hat-shaped steel shape due to the horizontal force is concentrated on the upper and lower bent parts of the rising part. It can be seen that almost no occurrence occurred in the vicinity of the center of the rising portion.
In the present invention, instead of the repulsive force of the elastic spring with the longitudinal slit of the prior art, we developed a vibration control element that applied the plastic bending deformability of the low yield point steel, and based on the study of the bending moment. A through-hole was formed in the vicinity of the bending start point of the bent portion of the rising portion of the vibration damping element while avoiding the collapse of the bent portion having the largest bending moment. The through hole is formed as a pin point in the vicinity of at least one of the bending start point 11A of the first bending part 11 or the second bending start point 12A of the second bending part 12 in the rising part 9 of FIG. It is possible to induce a bending deformation by gently reducing the cross-sectional area of this portion, prevent harmful deformation of each bending portion due to the concentration of bending stress, and effectively absorb seismic motion.

  Further, in the present invention, the vibration control element is formed with a flat portion inclined with respect to the frame mounting surface portion between the first bent portion and the second bent portion, and the overall shape in a side view is substantially Ω shape. A seismic control device characterized by

  According to this vibration control device, in the vibration control element having a substantially Ω shape, a uniform bending strain can be obtained by bending the low yield point steel in advance, and a large energy absorption function can be provided. .

  Further, in the present invention, the vibration control element is formed with a flat portion perpendicular to the frame mounting surface portion between the first bent portion and the second bent portion, and the overall shape in a side view is a hat-shaped steel shape. A seismic control device characterized by

  According to this vibration control device, a large energy absorbing function can be provided by bending the low yield point steel in advance with the first bent portion and the second bent portion so as to exhibit a hat-shaped steel shape. .

  In the present invention, a base plate attached to the lower surface of the frame attachment surface portion of the vibration control element and a shear reinforcement base plate extending in the longitudinal direction of the base plate and attached to the building structure frame are interposed. The vibration control device is characterized by this.

If the frame mounting surface of the vibration control element is directly fixed to the building structure frame using bolts, when the vibration control element slides in the longitudinal direction due to an earthquake, the bolt loosens and the rigidity of the vibration control device decreases and energy is reduced. Absorption performance is reduced. In addition, the frame mounting surface portion may be lifted from the building structure frame and may induce breakage around the bending start point of the first bending portion near the frame mounting surface portion.
On the other hand, the installation of the base plate and the shear reinforcement base plate restricts the loosening of the bolts, increases the overall mounting rigidity, further improves the absorption efficiency of the seismic energy, and the response during the earthquake The acceleration can be reduced.

  Further, in the present invention, the diagonal member is made of a steel pipe, cuts the steel pipe at a portion other than the intermediate portion to provide a hollow portion, and welds a set of nuts and a reverse screw nut facing the cut surface, Both were connected with a long bolt with a grip for tightening in a turnbuckle style.

  According to this seismic control device, the tension strength can be easily adjusted when the diagonal member is attached, and the bolt allowance can be reduced, so that the attachment rigidity is increased and the absorption efficiency of the earthquake energy is improved.

  According to the present invention, since the seismic energy absorption performance due to the sliding of the seismic control device is large, the deformation of the building structural frame at the time of the earthquake is suppressed, and the low-cost control that can be applied to a wooden building where seismic control is difficult. Made the seismic device possible.

  FIG. 5 is a side view showing a layout example of the vibration control device 1 and the building structure frame 2 according to the present invention. The building structure frame 2 is a wooden frame used for a wall of a low-rise house, for example, and includes a rectangular frame composed of a pair of vertical members 3 and horizontal members 4. Specifically, the vertical member 3 is a pillar or the like, and the horizontal member 4 is a beam or a base.

The vibration control device 1 has a configuration including a band-shaped steel plate vibration control element 6 interposed between an intermediate portion of the vertical member 3 of the building structure frame 2 and the diagonal member 5. In FIG. 5, the vibration control element 6 is attached to the middle part of each vertical member 3 of the building structure frame 2, and the fixing bracket 7 is attached to the corner of the building structure frame 2 to control the four diagonal members 5. A mode in which the seismic element 6 and the fixing bracket 7 are spanned is shown. That is, the diagonal member 5 is constructed so as to cross in an X shape at the upper part and the lower part in the building structure frame 2 . As the fixing bracket 7, a known bracket that directly fixes the end portion of the diagonal member 5 by nailing or screw fastening is generally used.

  Although not shown, as a modification of the layout of the vibration control device 1 with respect to the building structure frame 2, the vibration control elements 6 are attached to the middle part of the upper and lower cross members 4 in addition to the middle part of the left and right vertical members 2. Then, the four diagonal members 5 can be stretched over the four damping elements 6 so as to have a rhombus shape in the building structure frame 2.

  The diagonal member 5 is made of, for example, a steel pipe, cuts a portion other than the middle portion, welds a set of nuts in which the threading direction is reversed on each cut surface, and connects these with long bolts, This is a so-called turnbuckle type in which a fastening member is provided on a bolt.

Hereinafter, the vibration control element 6 will be described by showing two embodiments.
“First Example”
FIG. 1 is a perspective view of an essential part of a vibration control device 1 when the vibration control element 6 of the first embodiment is used.
The damping element 6 has a so-called groove shape in which both end portions in the longitudinal direction of the strip steel plate are flattened and the central portion is bent in a projecting shape so that the top portion is flattened. The frame attachment surface portions 8 attached to the longitudinal members 3 of the building structure frame 2 are bent toward the inner side of the building structure frame 2 from the frame attachment surface portions 8 through the first bending portions 11. A pair of rising portions 9, a central upper side surface portion 10 that is bent in parallel with the frame mounting surface portion 8 from each rising portion 9 through the second bending portion 12, and the upper side surface portion 10 are integrally raised, and the diagonal member 5 It has a shape having an oblique member mounting plate 16 to which one end thereof is mounted.

  In the damping element 6 of the first embodiment, a flat surface portion 13 inclined with respect to the frame mounting surface portion 8 is formed between the first bent portion 11 and the second bent portion 12 that form an R portion when the strip steel is bent. Thus, the overall shape in a side view is a substantially Ω shape. The minimum bending radius of the first bending portion 11 and the second bending portion 12 is approximately the thickness of the steel plate, but may be a bending radius larger than that.

  The frame attachment surface portion 8 is attached to the vertical member 3 of the building structure frame 2 by, for example, a plurality of screw bolts 14 or the like. At this time, the frame attachment surface portion 8 may be directly attached to the building structure frame 2, but the base plate extends in the longitudinal direction of the vibration control element 6 between the frame attachment surface portion 8 and the building structure frame 2. 15 can be interposed. This is to reinforce the frame attachment surface portion 8 when the seismic control device 1 is mounted on the vertical member 3 to further increase the rigidity of the vertical member 3.

Since wood is made of a soft material, if the steel damping device 1 made of high hardness is attached thereto, the frame mounting surface portion 8 will sink into the wood when it is applied even if the screw bolt 14 is tightened firmly, and repeatedly applied to the screw bolt 14. When force is applied, loosening occurs and the rigidity of the vibration control device 1 decreases.
Now, when a horizontal force is applied to the vibration control element 6 made of a steel plate having a low yield point of 6 mm without using the base plate 15, the relationship between the load and the pulling force of the screw bolt 14 is obtained by calculation. And the relationship shown in FIG. 10 is obtained. In FIG. 10, the horizontal part of the graph shows a situation where the pulling force of the screw bolt 14 is maximized and slips to the side, and the holding force of the damping device 1 by the screw bolt 14 is no longer lost. .

  To fix this problem, if the base plate 15 made of a rectangular flat steel plate is fixed to the lower surface of the frame mounting surface portion 8, the frame mounting surface portion 8 is prevented from being sunk into the base plate 15 during application. If the shear reinforcement base plate 15 ′ is provided so as to abut on both edges in the longitudinal direction of the plate 15, the looseness of the screw bolt 14 is limited, the entire mounting rigidity is increased, and the seismic energy absorption efficiency is further improved. In addition, it is possible to reduce the response acceleration during the shaking. In addition to the case where the base plate 15 is fixed in advance to the frame mounting surface portion 8 of the vibration control element 6 by welding or the like, for example, the base plate 15 is separated from the vibration control element 6, and the base plate 15 is secured by a screw 18. It can also be set as the structure inserted between the frame attachment surface part 8 and the building structure frame 2 by fastening together with the frame attachment surface part 8 with the some screw volt | bolt 14 after attaching to the vertical member 3. FIG. Furthermore, the shear reinforcement base plate 15 'is also made of a rectangular flat plate-like steel plate, and is fastened and fixed to the longitudinal member 3 using screws or the like.

  In the vibration control element 6 of the present embodiment, a step is provided in the width direction around the base of the first bent portion 11, and the width dimension of the frame mounting surface portion 8 is larger than the width dimension of the rising portion 9 and the upper side surface portion 10. doing. This is mainly due to a large mounting area of the frame mounting surface portion 8 with respect to the building structure frame 2. In some cases, a constant width dimension may be provided over the entire longitudinal direction of the vibration control element 6.

  At the center in the longitudinal direction of the upper side surface portion 10, an oblique material mounting plate 16 that rises orthogonal to the upper side surface portion 10 and extends in the longitudinal direction of the vibration control element 6 is fixed by welding or the like. The diagonal member mounting plate 16 has holes 16A through which screws, nails, etc. for fixing the diagonal member 5 are passed, and one end of each diagonal member 5 mounted on the upper side and the lower side is formed on the diagonal member mounting plate 16. It is applied and fixed by a screw or the like (not shown).

  In the rising portion 9, at least one of the vicinity of the bending start point of the bent portion, that is, the first bending starting point 11A of the first bending portion 11 and the second bending starting point 12A of the second bending portion 12 which are located closer to the rising portion 9. A through-hole 17 is formed in the vicinity of at least one. In FIG. 1, the case where the through-hole 17 was drilled both in the vicinity of the first bending start point 11A and the second bending start point 12A is shown. Depending on the case, the through hole 17 may be formed only in the vicinity of the first bending start point 11A of the first bending part 11 or only in the vicinity of the second bending start point 12A of the second bending part 12. The through-hole 17 is preferably formed in the flat portion 13 in the vicinity of the first bending start point 11A and the second bending start point 12A without applying to the curved surfaces of the first bending portion 11 and the second bending portion 12.

  The shape and hole diameter of the through hole 17 and the number of holes in the width direction of the vibration control element 6 are appropriately set. In FIG. 2, (a) is a side view around one rising part 9, and (b) to (e) show each aspect of the through-hole 17 when viewed from the A direction orthogonal to the plane part 13 in (a). The first bending start point 11A and the second bending start point 12A are indicated by imaginary lines. In any of (b) to (e), the first bending start point 11 </ b> A and the second bending start point 12 </ b> A are not applied to the through holes 17 on the curved surfaces of the first bending part 11 and the second bending part 12 as described above. The case where it drilled in the plane part 13 of the vicinity is shown.

  (B) shows a case where a substantially perfect through-hole 17 is formed in the center in the width direction of the rising portion 9 in the vicinity of the first bending start point 11A and the second bending start point 12A. When the first bending portion 11 and the second bending portion 12 are bent after the through-hole 17 is formed, the hole shape near the outer surface of the bending is slightly elongated oval due to bending tension. Deform. (C) is an example showing a case where the width of the rising portion 9 is large. In the vicinity of the first bending start point 11A and the second bending starting point 12A, a plurality of rows of through holes 17 having a perfect circle are arranged in the width direction of the rising portion 9. The case of drilling (3 rows in the figure) is shown. (D) shows the case where a long elliptical through hole 17 is formed in the width direction at the center of the rising portion 9 in the vicinity of the first bending start point 11A and the second bending start point 12A. (E) shows the case where the slit-like through-hole 17 is continuously drilled from the vicinity of the first bending start point 11A to the vicinity of the second bending start point 12A at the center in the width direction of the rising portion 9. Also in each example of (d) and (e), when the width of the rising portion 9 is large, the through holes 17 may be formed in a plurality of rows in the width direction of the rising portion 9, and the width of the rising portion 9 as a whole. Is larger, it is more effective in terms of strength to set a through hole 17 with a small hole diameter than to make a single through hole 17 with a large hole diameter.

  The method of drilling the through-hole 17 is not particularly limited, but if the laser beam is drilled, the manufacture of the vibration control element 6 can be simplified, the generation of heat can be suppressed, and the manufacturing cost of the vibration control element 6 can be reduced. . In the case of drilling with laser light, it is preferable to drill before bending the strip steel plate.

  In addition to the low yield point steel used in the present invention, an elastic-plastic hysteresis steel sheet, an annealed steel sheet, and the like are preferable as the strip-shaped steel sheet of the damping element 6.

The operation of the present invention will be explained. In FIG. 5, when the horizontal earthquake force H acts on the cross member 4 on the upper part of the building structure frame 2, the horizontal force of H / 2 is applied to the upper and lower struts, respectively. When the component force to the diagonal member 5 is S, the horizontal component force is P, the vertical component force is V, and the angle between the diagonal member 5 and the structural member 4 is Q, P = ScosQ, V = SsinQ Become. At this time, P acting in a direction perpendicular to the vertical member 3 of the building structure frame 2 cancels each other, and the vibration control device 1 is applied with a component force of 2 V in a direction parallel to the vertical member 3. . Then, the 2V component force acts smoothly on the upper side surface portion 10 from the diagonal member mounting plate 16 of the vibration control element 6 in FIG. 1, and accordingly, in the through hole 17 portion drilled in the rising portion 9. The bending deformation is induced, and the upper side surface portion 10 repeatedly slides in the same direction as the surface of the longitudinal member 3 to absorb the seismic energy acting on the building structure frame 2.
By using the low yield point steel as the strip steel plate of the damping element 6, the damping element 6 having excellent damper performance is obtained, and a sufficient amount of elastic deformation is ensured.

  And by providing the through-hole 17 in the rising part 9, since the deformation amount of the damping element 6 when a seismic load is applied from the building structure frame 2 through the diagonal member 5, the vibration absorbing action can be taken. It will improve and exhibit the prescribed seismic control effect.

  Here, if the through-hole 17 is drilled in the bent portion (the curved surfaces of the first bent portion 11 and the second bent portion 12), harmful deformation is likely to occur, and the center portion in the longitudinal direction of the flat portion 13 of the rising portion 9 is likely to occur. Even if the perforations are perforated, since the center area corresponds to the inversion portion of the bending moment distribution as can be seen from FIG. 9, the effect of the predetermined bending deformation cannot be expected so much.

  On the other hand, as in the present invention, the through-hole 17 is formed in the vicinity of at least one of the first bending start point 11A and the second bending start point 12A, preferably each curved surface of the first bending part 11 and the second bending part 12. Without this, by making a pinpoint in the vicinity of at least one of the first bending start point 11A and the second bending starting point 12A, the cross-sectional area of the rising portion 9 at the first bending starting point 11A and the second bending starting point 12A is moderated. Therefore, it is possible to prevent breakage at each curved surface of the first bending portion 11 or the second bending portion 12 where bending stress is concentrated.

  In FIG. 6, (a) is a structural view of the wooden specimen frame assembly 21, and (b) is an elevation view of the specimen body side. The present inventor applied the damping element 6 of the first embodiment to the test body shaft assembly 21 to perform a full-scale test using a shaking table, In the house structure frame 22, the diagonal member 5 is installed in the form shown in FIG. 5, that is, so as to cross in an X shape at the upper and lower parts in the building structure frame 22. As the low yield point steel strip steel plate for the damping element 6, an elastic-plastic hysteretic damper steel plate for building structures was used. The plate thickness is 6 mm, and the width of the rising portion 9 is 30 mm. As shown in FIG. 2B, the planar portion 13 in the vicinity of the first bending start point 11A and the second bending start point 12A is used as the through hole 17. 2, two through holes 17 having a hole diameter of 5 mm were formed in the center of the rising portion 9 in the width direction.

  FIGS. 7 and 8 show graphs of a load (interlaminar shear force) -interlayer displacement curve when a 5.6-ton weight 23 is loaded on the roof portion of the specimen frame 21 and an earthquake wave is loaded. FIG. 7 is a graph loaded with Ojiya waves (input 100%), FIG. 8 is a graph loaded with El Centro waves (input 200%), and thin solid lines (curve groups indicated by B) are each building structure as a comparative example. A curve when a 9 mm thick plywood bearing wall is attached to the frame 22 is shown, and a thick solid line (a group of curves indicated by A) shows a curve when the vibration control device 1 according to the present invention is attached thereto. As can be seen from FIGS. 7 and 8, the displacement when the present invention is applied to both seismic waves is within about half of the displacement of the comparative conventional example, and the conventional loading test body with the seismic control device 1 removed. In both cases, peeling of the plywood bearing wall was confirmed.

"Second Example"
FIG. 3 is a perspective view of an essential part of the vibration control device 1 when the vibration control element 6 of the second embodiment is used.
Whereas the overall shape of the vibration control element 6 of the first embodiment in a side view is substantially Ω shape, the vibration control element 6 of the second embodiment includes the first bending portion 11, the second bending portion 12, and the like. By forming the plane portion 13 orthogonal to the frame attachment surface portion 8 between the two, the overall shape in a side view is a hat-shaped steel shape. Also in the vibration control element 6 of the second embodiment, the bending radii of the first bending portion 11 and the second bending portion 12 are preferably about the plate thickness dimension of the steel plate, but may be a bending radius larger than that.

In FIG. 4, (a) is a side view around one rising portion 9, and (b) to (e) show each aspect of the through-hole 17 when viewed from the B direction orthogonal to the plane portion 13 in (a). As in the case of the first embodiment, the first bending start point 11A and the second bending start point 12A are not affected by the through holes 17 being applied to the curved surfaces of the first bending part 11 and the second bending part 12, respectively. The case where it perforates in the plane part 13 near is shown. Since the description of each through hole 17 of (b) to (e) has been given in the first embodiment, it is omitted here. The other components are also the same as those in the case of the vibration control element 6 of the first embodiment, so the same reference numerals are given and the description thereof is omitted.
Even when the vibration control element 6 of the second embodiment is used, the same effect as that of the first embodiment can be obtained.

  The preferred embodiments of the present invention have been described above. The present invention is not limited to the described embodiment, and various design changes can be made without departing from the spirit of the present invention.

It is a principal part perspective view of the damping device at the time of using the damping element of 1st Example. (A) is a side view around the rising portion of the vibration damping element of the first embodiment, and (b) to (e) show each aspect of the through-hole when viewed from the A direction orthogonal to the plane portion in (a). It is explanatory drawing shown. It is a principal part perspective view of the damping device at the time of using the damping element of 2nd Example. (A) is a side view around the rising portion of the vibration control element of the second embodiment, and (b) to (e) show each aspect of the through-hole when viewed from the B direction orthogonal to the plane portion in (a). It is explanatory drawing shown. It is a side view which shows the example of a layout of the damping device and building structure frame which concern on this invention. (A) is a structural drawing of a wooden specimen frame assembly, and (b) is an elevation view of a specimen body side. It is a graph of a load (interlaminar shear force)-interlaminar displacement curve when Ojiya wave (input 100%) is loaded on the test body axis group. It is a graph of a load (interlaminar shear force)-an interlaminar displacement curve when an El Centro wave (input 200%) is applied to a specimen axis group. (A), (b) is a bending-moment figure at the time of applying force in the damping element of omega shape and hat-shaped steel shape, respectively. It is a graph which shows the relationship between the load at the time of applying horizontal force to a damping element, and the extraction force of a screw bolt. It is a figure which shows the fracture | rupture state of the conventional curved spring.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seismic control device 2 Building structure frame 3 Longitudinal material 4 Lateral material 5 Diagonal material 6 Damping element 7 (of diagonal material) fixing bracket 8 Frame attachment surface part 9 Rising part 10 Upper side surface part 11 1st bending part 11A 1st bending origin 12 2nd bending part 12A 2nd bending origin 13 Flat part 15 (rising part) Base plate 15 'Shear reinforcement base plate 16 Diagonal material mounting plate 17 Through hole 21 Specimen frame 22 Building structure frame 23 Weight

Claims (5)

It is formed by fixing the damping element made of strip steel plate made of low yield point steel attached to the middle part of the vertical members facing the building structure frame and the corners of the building structure frame diagonally with diagonal materials A vibration control device,
The vibration control element is
Frame mounting surface portions at both ends for mounting on the vertical members of the building structure frame,
A pair of rising parts formed through the first bent part, which is bent toward the inside of the building structure frame from each frame mounting surface part,
An upper side surface portion formed through a second bent portion, which is bent in parallel to the frame mounting surface portion from the rising portion;
An oblique material mounting plate that is integrally formed from the upper side surface part and to which one end of the diagonal material is attached,
It has a shape with
A plane portion inclined with respect to the frame mounting surface portion is formed between the first bent portion and the second bent portion, and the overall shape in a side view has a substantially Ω shape,
A through-hole is formed in at least one of the rising portions in the vicinity of the bending start points of the two bending portions.   The vibration control element has a flat portion perpendicular to the frame mounting surface portion formed between the first bent portion and the second bent portion, and the overall shape in a side view is a hat-shaped steel shape. The seismic control device according to claim 1, wherein the device is a seismic control device. The base plate attached to the lower surface of the frame attachment surface portion of the seismic control element, and the shear reinforcement base plate extending in the longitudinal direction of the base plate and attached to the building structure frame are interposed. The vibration control device according to any one of claims 1 to 2 . The diagonal material consists of a steel pipe, cuts the steel pipe at a portion other than the middle part to provide a hollow part, welds a set of nuts and a reverse screw nut facing the cut surface, and turns them into a turnbuckle type. The vibration control device according to any one of claims 1 to 3 , wherein the vibration control device is connected by a long bolt provided with a grip for binding.   It is formed by fixing the damping element made of strip steel plate made of low yield point steel attached to the middle part of the vertical members facing the building structure frame and the corners of the building structure frame diagonally with diagonal materials A seismic structure wall using a seismic control device,
  The vibration control element is
  Frame mounting surface portions at both ends for mounting on the vertical members of the building structure frame,
  A pair of rising parts formed through the first bent part, which is bent toward the inside of the building structure frame from each frame mounting surface part,
  An upper side surface portion formed through a second bent portion, which is bent in parallel to the frame mounting surface portion from the rising portion;
  An oblique material mounting plate that is integrally formed from the upper side surface part and to which one end of the diagonal material is attached,
  It has a shape with
  A plane portion inclined with respect to the frame mounting surface portion is formed between the first bent portion and the second bent portion, and the overall shape in a side view has a substantially Ω shape,
  A damping structure wall characterized in that a through hole is formed in at least one of the bent portions in the vicinity of the bending start points of the rising portions.

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