JP3837666B2 - Damping dampers and structures for damping structures - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration damper and a vibration control structure of a structure using hysteresis absorption energy associated with the yield of steel.
[0002]
[Prior art]
In recent years, seismic structures that can control the damage of structures have been spreading toward the performance design era. In particular, steel dampers using hysteresis energy that accompanies the yielding of steel materials have been widely used because they can exhibit large damping performance at low cost.In particular, the type of studs installed between beams on the upper and lower floors has a simple mechanism and is designed. It is often used because it is easy to handle (see Patent Document 1).
As shown in FIG. 5 (a), a generally used steel-column-shaped steel damper 20 is provided on a column 19 provided at the center of the floor of a structure 16 including columns 17 and beams 18. The steel damper 20 includes a panel member 20a formed of mild steel or the like that yields earlier than the general part. For this reason, when an earthquake or the like occurs, the steel damper 20 attenuates the vibration of the structure 16 by concentrating deformation on the panel member 20a.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-82201 (see page 3-5, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, in such a steel damper 20, vertical stiffening members 20 b are provided on both side end surfaces of the panel member 20 a in order to smoothly transmit a load to the upper and lower intermediate columns 19 in a normal state. Since normal steel or high-strength steel is used for the vertical stiffening member 20b, if the steel member damper 20 undergoes a large deformation, if the panel member 20a attempts to undergo shear deformation at an angle θ, the vertical length of the member length h The stiffening member 20b is pulled in the length direction to become h / cos θ, and a large tensile axial force is generated. This becomes a force that restrains the deformation of the panel member 20a, and is a factor that degrades the performance of the steel damper 20. For this reason, a plurality of mechanisms for releasing the tensile axial force acting on the vertical stiffening member 20b have been proposed in the past.
[0005]
In view of the above circumstances, an object of the present invention is to provide a vibration damping damper that can be inexpensive and can effectively exhibit the performance as a damper, and a vibration damping structure for a structure.
[0006]
[Means for Solving the Problems]
The damping damper according to claim 1 is made of a plate material of mild steel or low yield point steel, and is made of two panel members formed in a parallelogram in plan view, and a plate material of ordinary steel material or high tensile steel, and the panel A plurality of stiffening members are arranged on the outer peripheral end surface of the panel member so as to form a plane orthogonal to the member, and are integrally fixed, and the two panel members are on the same plane. Adjacent to each other in the vertical direction so as to form a symmetry, and fixed integrally with the stiffening member interposed therebetween, and the stiffening member on each of the outer peripheral end surfaces of the two panel members fixedly fixed It is characterized by being fixed.
[0007]
The structure damping structure according to claim 2, wherein the structure includes a column and a beam, and the mounting member is provided in a structure composed of the column and the beam, and protrudes from the upper and lower beams to face the structure. The damping damper is fixed so as to connect the panel members, and the panel members constituting the damping damper are arranged so as to form a vertical surface, and the upper and lower end surfaces of the panel member are provided on the upper and lower ends. A rigid member is integrally fixed to the mounting member.
[0008]
The structure damping structure according to claim 3, wherein a plurality of the damping dampers are provided in parallel so as to connect mounting members projecting from upper and lower beams to face the construction surface in the construction surface. It is characterized by being able to.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 to FIG. 4 show the vibration control damper of the present invention and the vibration control structure of the structure using the vibration control damper. The seismic damper of the present invention comprises a panel member made of mild steel or low yield point steel formed into a parallelogram, arranged symmetrically in the vertical direction, and the two pieces are integrated in a state where a character is formed. The stiffening member is arranged and fixed to each of the outer peripheral end surfaces so as to form an orthogonal surface with respect to the panel member, and it is integrated into a dogleg when deforming in the in-plane direction of the panel member. The stiffening member provided on the side portion of the two panel members is configured not to generate a large tensile axial force.
[0010]
(First embodiment)
As shown in FIG. 1 (a), the structure 1 including the steel column 2 and the beam 3 has an upper portion in an intermediate portion sandwiched between adjacent columns 2 in the plane of the column 2 and the beam 3. A spacer 4 is arranged so as to connect the beam 3a and the lower beam 3b. The inter-column 4 is disposed so as to protrude downward from the lower surface of the upper beam 3a, and is provided at a position opposed to the upper mounting member 6 so as to protrude from the upper surface of the lower beam 3b. A lower mounting member 7 and a seismic damper 8 fixed so as to connect the lower mounting member 7 and the upper mounting member 6 to each other.
The upper mounting member 6 and the lower mounting member 7 are made of the same material as that of the beam 3 and the column 2, and generally used steel materials such as ordinary steel materials are used. In the present embodiment, H-section steel is used, and both flanges 6 a and 7 a are arranged so as to face the side surface of the column 2.
[0011]
On the other hand, the vibration damper 8 is composed of two panel members 9 a and 9 b and a plurality of stiffening members 10. The panel members 9a and 9b are plate members made of mild steel, low yield point steel, or the like, and are formed into a parallelogram in plan view.
The stiffening member 10 includes horizontal stiffening members 11 disposed on upper and lower end surfaces of the panel members 9a and 9b, and side stiffening members 12 disposed on both side end surfaces of the panel members 9a and 9b. These are all plate materials made of plain steel or high-tensile steel. The length of the horizontal stiffening member 11 is the same as the upper and lower end surfaces of the panel members 9a and 9b, and the side stiffening member 12 is a panel member. It is formed to have the same length as the both end faces of 9a and 9b. Moreover, as shown in FIG.1 (b), the width | variety is shape | molded to the same extent as the width | variety of the flanges 6a and 7a of the H-section steel used for the said lower attachment member 7 and the upper attachment member 6. FIG. The horizontal stiffening member 11 and the side stiffening member 12 do not need to be manufactured in two types having different lengths as long as the lengths of the upper and lower end surfaces and both end surfaces of the panel members 9a and 9b are the same. The length stiffening member 10 may be used for both the upper and lower end surfaces and both end surfaces.
The horizontal stiffening member 11 and the side stiffening member 12 are fixed to each of the upper and lower end surfaces and both side end surfaces which are outer peripheral end surfaces of the panel member 9, but their arrangement is orthogonal to the panel surface. A flat surface is formed, and the panel member 9 is arranged so as to protrude evenly from both the front and back surfaces.
[0012]
In the vibration damper 8 having such a configuration, the two panel members 9a and 9b are arranged adjacent to each other in the vertical direction so as to be symmetrical on the same plane. It is fixed by fixing means. As a result, the two panel members 9 appear to be integrated by forming a square shape. The two panel members 9a and 9b integrated in such a shape have the horizontal stiffening on the upper end surface of the panel member 9a disposed above and the lower end surface of the panel member 9b disposed below. The member 11 is fixed via fixing means, and the side stiffening members 12 are fixed to both end faces of the panel members 9a and 9b via fixing means. Therefore, the horizontal stiffening member 11 and the side stiffening member 12 are fixed to the panel members 9a and 9b so as to surround the outer peripheral end surface, and restrain the out-of-plane deformation of the panel members 9a and 9b. .
Note that welding, high-strength bolts, or the like are used as fixing means for fixing the horizontal stiffening member 11 and the side stiffening member 12 to the panel members 9a and 9b.
[0013]
The vibration damping damper 8 having the above-described configuration includes the upper mounting member 6 and the lower mounting member 7 so that the panel surfaces of the two integrated panel members 9a and 9b formed in a U-shape are vertical surfaces. The horizontal stiffening member 11 located on the upper end surface of the panel member 9a disposed above and the projecting end surface of the upper mounting member 6 and the bottom of the panel member 9b disposed below. The horizontal stiffening member 11 located on the end face and the protruding end face of the lower mounting member 7 are fixed together by fixing means so that the stud 4 is configured.
[0014]
In this way, the damping damper 8 incorporated in the stud 4 is attenuated when panel members 9a and 9b made of mild steel or low yield point steel yield at an early stage and absorb earthquake energy when large deformation occurs due to the occurrence of an earthquake or the like. Produces an effect. At this time, since each of the panel members 9a and 9b arranged symmetrically continuously in the vertical direction is formed in a parallelogram, the side end surfaces of the panel members 9a and 9b are respectively shown in FIG. As shown in FIG. 4, in a normal state, a dogleg having a predetermined inclination angle θ with respect to the vertical axis is formed. Accordingly, the side stiffening member 12 that is integrally fixed to the side end face is also arranged with an inclination angle θ with respect to the vertical axis, and two side stiffening members that are continuous in the vertical direction are arranged. 12 forms a square shape in plan view.
As a result, when a shearing force acts on the damping damper 8 and a force that pulls the side stiffening member 12 in the length direction of the member acts on the side stiffening member 12, the two side portions that are continuous vertically are supplemented. The panel member 9a, 9b can be freely deformed in the horizontal and vertical directions with almost no restraint because only a change in the shape of the cross-section of the rigid member 12 in plan view does not cause a large tensile axial force. Therefore, the performance as a damper can be sufficiently exhibited. Further, even if the panel members 9a and 9b are subjected to shear deformation at the time of large deformation, the member height h of the vibration damper 8 itself does not change, so that the vibration damper is constant under the member height h. 8 can produce a damping effect.
[0015]
In the present embodiment, the seismic control structure in which one seismic damper 8 is provided on the stud 4 is not necessarily limited to this, and if a damping effect can be exerted on the structure 1. A configuration in which a plurality of damping dampers 8 are provided in parallel to the stud 4 may be adopted.
Further, in the present embodiment, the steel structure 1 is taken as an example, and the vibration control structure provided with the vibration control damper 8 is shown. However, the structure 1 may be a reinforced concrete structure. .
Furthermore, in the present embodiment, the vibration control structure in which the vibration control damper 8 is arranged in the middle part of the inter-column 4 is shown, but this is not necessarily limited to this, and as shown in FIG. 2, for example, the upper beam 3a The upper mounting member 6 is provided so as to protrude vertically downward from only the lower surface of the upper member, and the damping damper 8 may be fixed so as to connect the upper mounting member 6 and the lower beam 3b. . In this case, the horizontal stiffening member 11 is fixed to the lower beam 3b via fixing means on the lower end surface of the panel member 9b disposed below.
[0016]
(Second Embodiment)
In the first embodiment, the damping structure in which the stud 4 is arranged in the surface composed of the pillar 2 and the beam 3 and the damping damper 8 is incorporated in the stud 4 is shown. However, the joint portion 5 when the damping damper 8 is arranged in the construction surface does not stick to the upper mounting member 6 and the lower mounting member 7 constituting the stud 4 as described above. In 2nd Embodiment, the other example of the connection part 5 of the damping damper 8 in the damping structure using the damping damper 8 is shown below.
As shown in FIG. 3, a drooping wall 14 projecting downward from the upper beam 3 a serving as the joint portion 5 of the vibration damper 8 is formed in the structure composed of the column 2 and the beam 3 of the reinforced concrete structure 1, and A waist wall 15 is disposed at a position facing the hanging wall 14 and protrudes upward from the lower beam 3b. The damping damper 8 arranged so as to connect the hanging wall 14 and the waist wall 15 is arranged below the horizontal stiffening member 11 fixed to the upper end surface of the panel member 9a arranged above, and below. An embedded member 13 made of a steel material is provided so as to protrude outward from both the horizontal stiffening members 11 fixed to the lower end surface of the panel member 9b.
The seismic damper 8 has such a height that the horizontal stiffening member 11, the hanging wall 14, and the protruding surfaces of the waist wall 15 can form the same plane. While being embedded in each of the wall 14 and the waist wall 15, the horizontal stiffening member 11 is fixed so as to be integrated with the hanging wall 14 and the waist wall 15.
[0017]
In the second embodiment, the configuration in which two damping dampers 8 are attached in parallel is shown. However, the present invention is not particularly limited to this. Any number of units may be attached, and the number is not particular.
In addition, it is not always necessary to use only the vibration damping damper 8, and it is also possible to adopt a configuration in which a different kind of damper such as a commonly used friction damper or viscoelastic damper is used together.
[0018]
According to the first embodiment and the second embodiment described above, the vibration damper 8 has the same two panel members 9a and 9b made of mild steel or low yield steel formed in a parallelogram. It arrange | positions up and down so that a symmetry may be formed on a plane, and both may be connected via the horizontal stiffening member 11, and the horizontal stiffening member 11 on the upper and lower end surfaces of two integrated panel members 9a and 9b, The stiffening member 10 such as the side stiffening member 12 is fixed to both end faces.
As a result, the side end surfaces of the two panel members 9a and 9b arranged continuously in the vertical direction have an inclination angle θ with respect to the vertical axis. In other words, the side stiffening member 12 which is continuously attached to the upper and lower sides is also arranged in a dogleg shape. For this reason, when an earthquake or the like occurs and a large deformation occurs in the vibration control damper 8, even if shear deformation occurs in the panel members 9a and 9b, the laterally stiffening member 12 of the side stiffening member 12 continues to be Since the side stiffening member 12 does not generate a large tensile axial force only due to the deformation of the shape, the panel members 9a and 9b which are to be deformed in an in-plane direction such as a horizontal direction or a vertical direction with a large deformation, It is hardly restrained, and can be freely deformed by making full use of its original performance, and can easily absorb seismic energy and sufficiently enhance the damping effect.
[0019]
As described above, when the vibration damping damper 8 is deformed, an excessive tensile axial force is not generated in the side stiffening member 12, and therefore, the vibration damping damper 8 is excessive with respect to the mounting member 5 to which the vibration damping damper 8 is fixed. This makes it possible to design a rational member without having to consider an axial force.
Further, when the damping damper 8 is deformed, the component force of the tensile axial force acting on the side stiffening member 12 is not added, so that excessive force does not act on the joint portion with the attachment member 5. Therefore, it is only necessary to perform a study based on the shear strength for these designs, so that a rational design can be performed.
[0020]
Further, since the influence of the tensile axial force of the side stiffening member 12 is not reflected on the panel members 9a and 9b of the damping damper 8, the amplitude width of the vicinity of the side stiffening member 12 in the panel members 9a and 9b is Alleviated and improved low cycle fatigue properties.
[0021]
On the other hand, although the panel members 9a and 9b are parallelograms in plan view, since the shear stress distribution is not different from the case of the rectangular view generally used conventionally, the hysteresis characteristics as the damping damper 8 are It is similar to a rectangle and does not require any special design.
Further, even if it is damaged, it can be easily replaced in the same manner as the vibration damping damper 8 of the rectangular panel members 9a and 9b that have been used conventionally, and maintenance can be easily performed.
Furthermore, the production of the damping damper 8 does not require any special skill or machine, so there is no cost increase. If it is manufactured in advance in a factory, the workability and workability at the site are also conventional. It becomes possible to implement easily without changing.
[0022]
【The invention's effect】
According to the vibration damper of claim 1, it is composed of a plate material of mild steel or low yield point steel, and is composed of two panel members formed into a parallelogram in plan view, and a plate material of ordinary steel material or high-tensile steel, The panel member includes a plurality of stiffening members disposed on the outer peripheral end surface of the panel member so as to form a plane orthogonal to the panel member, and the two panel members are coplanar. Adjacent to each other in the vertical direction so as to form symmetry, and fixed integrally with the stiffening member interposed therebetween, each of the two peripherally fixed panel members is fixed to each of the peripheral end surfaces. Since the rigid member is fixed, a shearing force is applied to the damping damper, and even when a force that is pulled in the length direction of the side stiffening member is applied, the two continuous sides In the stiffening member The panel member that is deformed in the in-plane direction such as the horizontal direction or the vertical direction with a large deformation is hardly constrained because the large tensile axial force is not generated only by the shape change. It can be deformed freely by taking full advantage of its performance, easily absorbs seismic energy, and can sufficiently enhance the damping effect.
In this way, the panel member of the damping damper does not reflect the influence of the tensile axial force of the stiffening member that is fixed to both end faces of the panel member, so the amplitude width of the portion near the stiffening member in the panel member is reduced. It is possible to improve the low cycle fatigue characteristics.
[0023]
On the other hand, although the panel member is a parallelogram in plan view, the shear stress distribution is the same as that of a generally used plan view rectangle in the past, so the hysteresis characteristics as a damping damper are the same as the rectangle And no special design is required.
In addition, the production of seismic dampers does not require special skills or machinery, so there will be no cost increase. It can be easily implemented without change.
[0024]
According to the vibration control structure for a structure according to claim 2, the structure is provided in a structure composed of columns and beams of a structure including columns and beams, and protrudes from the upper and lower beams to face the structure. The damping damper is fixed so as to connect the mounting members, and the panel members constituting the damping damper are arranged so as to form a vertical surface, and are provided on the upper and lower end surfaces of the panel member, respectively. Since the stiffening member is integrally fixed to the mounting member, when the vibration damping damper is deformed, an excessive tensile axial force is generated in the stiffening member fixed to both end surfaces of the panel member. Therefore, it is not necessary to consider an excessive axial force with respect to the mounting member to which the seismic damper is fixed, and a rational member design can be performed.
In addition, when the damping damper is deformed, the component force of the tensile axial force acting on the stiffening member fixed to the both end faces of the panel member is not added, so that an increased force may act on the joint with the mounting member. Absent. Therefore, since it is only necessary to study the shear strength based on the design of the attachment member, a rational design can be performed.
[0025]
Also, even if it is damaged, it can be easily replaced in the same manner as the vibration-damping damper for a rectangular panel member conventionally used in plan view, and maintenance can be easily performed.
[0026]
According to the vibration control structure of a structure according to claim 3, the vibration control dampers are connected in parallel so as to connect the mounting members that protrude from the upper and lower beams to face the structural surface in the structural surface. Since a plurality of vibration dampers are provided, it is possible to share the burden associated with one vibration damper, and it is possible to reduce the size and improve the durability of the vibration damper.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of a vibration control damper and a vibration control structure using the vibration control damper according to the present invention.
FIG. 2 is a diagram showing another example of the vibration control structure shown in the first embodiment according to the present invention.
FIG. 3 is a diagram showing a second embodiment of the vibration control structure using the vibration control damper according to the present invention.
FIG. 4 is a diagram showing the deformation behavior of the vibration damper according to the present invention.
FIG. 5 is a view showing a conventional damping damper.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Structure 2 Column 3 Beam 3a Upper beam 3b Lower beam 4 Inter-column 5 Mounting member 6 Upper mounting member 6a Flange 7 Lower mounting member 7a Flange 8 Damping damper 9a Panel member 9b Panel member 10 Stiffening member 11 Horizontal stiffening member 12 Side stiffening member 13 Interlocking portion 14 Hanging wall 15 Waist wall 16 Structure 17 Column 18 Beam 19 Intermediary column 20 Steel damper 20a Panel member 20b Vertical stiffening member

Claims (3)

Two panel members made of mild steel or low-yield point steel plate and formed into a parallelogram in plan view;
It consists of a plate material of ordinary steel or high-tensile steel, and is composed of a plurality of stiffening members that are arranged on the outer peripheral end surface of the panel member so as to form a plane orthogonal to the panel member and are integrally fixed. ,
The two panel members are arranged adjacent to each other in the vertical direction so as to form symmetry on the same plane, and are fixed integrally with the stiffening member interposed therebetween,
The damping damper, wherein the stiffening member is fixed to each of the outer peripheral end faces of the two panel members fixed integrally. A structure damping structure using the damping damper according to claim 1,
The damping damper is fixed so as to connect the mounting members provided in the structure composed of the columns and beams of the structure including the columns and beams and projecting from the upper and lower beams to face the structure. And
The panel member constituting the vibration control damper is arranged so as to form a vertical surface,
A structure damping structure, wherein the stiffening member provided on each of the upper and lower end surfaces of the panel member is integrally fixed to the mounting member. In the vibration control structure according to claim 2,
A vibration control structure for a structure, wherein a plurality of the vibration dampers are provided in parallel so as to connect mounting members that protrude from upper and lower beams to face the frame in the frame.

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