JPH11256870A - Vibration control device using viscous body or viscoelastic body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve damper performance by reducing the number of dampers because damper performance is, on the contrary, lowered owing to an increase in number by the vertical division of a damper into two due to crossing in a conventional crossed type vibration damping device using the damper by a viscoelastic body. SOLUTION: The viscous body or the viscoelastic body 13 adapted to the type of both crossed type steel plates is pinched and unified between the two crossed type steel plates 11, 12, to which a plurality of end sections are arranged to upper and lower sections, and a crossed type damper 10 is formed, and each upper end section of one crossed type steel plates 11 in the crossed type damper 10 is joined on the upper floor side of a frame 1 and each lower end section of the other crossed type steel plates 12 on the lower floor side of the frame 1. A plurality of the crossed type dampers 10 are laminated through the viscous bodies or the viscoelastic bodies 13, and a plurality of layers are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control device using a viscous or viscoelastic material in a building structure.

[0002]

2. Description of the Related Art In a frame of a building structure, a damper may be obliquely provided between two diagonal nodes in the frame for the purpose of improving earthquake resistance and wind resistance. As shown in FIG. 9, in the case of the damper 2 in which the independent damper body 3 and the brace member 4 are connected to each other and interposed between the nodes in the frame 1, the rigidity of the brace member 4 must be sufficiently increased. No. 2 performance cannot be fully exhibited. FIG. 10 shows a dynamic model.

One solution to this problem is to use a viscous or viscoelastic damper. FIG. 11 shows the configuration concept in this case. The damper 5 basically has a viscous body or a viscoelastic body 8 sandwiched (adhered) between two strip-shaped steel plates 6 and 7.
7 relatively moves with the deformation of the frame 1, and the viscous or viscoelastic body 8 between the steel plate 6 and the steel plate 7 undergoes shear deformation to obtain a damping force. By distributing the viscous or viscoelastic body 8 between the nodes while maintaining this basic configuration, the mounting brace can be minimized, and the adverse effect of the brace in the frame (excessive deformation prevention) is also minimized. it can. Several examples of such a damper have been proposed so far. Hereinafter, these dampers will be briefly described.

FIGS. 12 and 13 show a damper 5 in which a viscous or viscoelastic material 8 is sandwiched (adhered) between two strip-shaped steel plates 6 and 7 between nodes in the frame 1. Shows the case of intervening. FIG. 14 shows the dynamic model in this case.

However, it is geometrically difficult to connect the remaining nodes in the same plane with a damper in order to obtain a larger damping performance. Therefore, in order to connect the remaining nodes, the damper is divided into two at the intermediate point, and FIG.
It is necessary to attach like. FIG. 17 shows a device image. In the figure, reference numerals 5a and 5b denote dampers connected in series, and two sets intersect. FIG. 18 shows a dynamic model in such a case. 2 connected in series
The damping performance C of one damper as a whole is the individual damper performance c
Expressed using Than Get. In this case, since the length of the length is reduced to ｃ, c itself is reduced to の of the original damper, so that the damper performance C in series becomes c / 4. The entire surface is c / 2. In this case, the mounting of the intersecting dampers rather deteriorates the damper performance.

[0006] Japanese Patent Publication No. 5-2074 discloses a vibration damping device using a damper made of a viscoelastic body as described above, in which an inner pipe and an outer pipe are combined instead of a strip-shaped steel sheet, and between them. The figure shows a damper formed with a viscoelastic body interposed. In this case, it is substantially the same.

[0007] In addition, Japanese Patent Publication No. 7-45782 discloses that a brace is fixed inside a frame, the brace is built in a PC wall slab so as to be relatively displaceable, and a space between the brace and the PC wall slab is provided. Is filled with a viscous or viscoelastic material. However, in this case, since the brace keeps the frame rigid, the number of mounting braces in the frame cannot be reduced, and the adverse effect of the brace (decrease in damping capacity) cannot be reduced.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems with respect to a damper using a viscous or viscoelastic material.

[0009]

In order to achieve the above object, the invention according to claim 1 is characterized in that a double crossed steel plate is provided between two crossed steel plates 11 and 12 having a plurality of ends arranged vertically. A cross-shaped damper 10 is formed by sandwiching and integrating a viscous body or a visco-elastic body 13 adapted to the above, and each upper end of the one cross-shaped steel plate 11 in the cross-shaped damper 10 is connected to the upper floor of the frame 1. Further, the lower end of the other cross-shaped steel plate 12 is joined to the lower floor of the frame 1.

According to a second aspect of the present invention, there is provided a vibration damping device using the viscous or viscoelastic body according to the first aspect, wherein a plurality of the cross dampers are further provided via the viscous or viscoelastic body. And formed in a plurality of layers.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 1. FIGS. 1 and 2 show an embodiment according to claim 1 having a single-layer crossed damper. As shown in the figure, two cross-shaped steel plates 11 and 12 each having two upper end portions and lower end portions are provided by intersecting each right-sloping and left-sloping strip-shaped steel plate at an intermediate portion, and The cross-shaped steel plates 11 and 12 are aligned, and a cross-shaped viscous or viscoelastic body 13 adapted to both forms is sandwiched and integrated (adhered) between the two to form a cross-shaped damper 10. Each upper end portion 14 of one cross-shaped steel plate 11 in the cross-shaped damper 10,
15 to the left and right nodes 16 and 17 on the upper floor side of the frame 1 and the lower ends 18 and 19 of the other cross-shaped steel plate 12 to the left and right nodes 20 and 21 on the lower floor side of the frame 1 respectively. Are joined.

FIG. 3 shows an embodiment according to claim 2 having a multi-layered cross-shaped damper. As shown in the figure, in the vibration damping device shown in FIGS. 1 and 2, a plurality of the cross dampers 10 are further laminated through the viscous body or the viscoelastic body 13 to form a plurality of layers.

FIG. 5 to FIG. 8 show a concrete example of an embodiment according to claim 2 having a multi-layered cross-shaped damper. In this case, in FIG. 3, a large number of the cross-shaped dampers 10 are laminated via the viscous body or the viscoelastic body 13, respectively, to form a large number of layers, and the corresponding dampers are respectively provided outside the laminated surface. A cover 22 formed in the form is covered. However, in this case, one cross-shaped steel plate 11 is provided in excess of one sheet, each cross-shaped steel plate 11 located on the outside is made a little wider, and the edges thereof and both edges of each cover 22 are made a large number. They are joined with through bolts 23.

According to these vibration damping devices, it is possible to connect the opposing nodes without dividing the obliquely intersecting dampers into two, so that a model as shown in FIG. 4 is obtained mechanically.

[0015]

According to the first aspect of the present invention, a similar cross-shaped viscous or viscoelastic body 13 is sandwiched between two cross-shaped steel plates 11 and 12 having a plurality of ends arranged vertically. The cross-shaped damper 10 formed integrally is formed by connecting the upper ends of one cross-shaped steel plate 11 to the upper floor of the frame 1 and the lower ends of the other cross-shaped steel plate 12 to the lower floor of the frame 1. And intervenes in the plane of the frame 1 so that it is essentially possible to have only two dampers which are inclined as a whole, and therefore, as in the case of a conventional cross-type, four dampers are advantageously used. Can be avoided, the damper performance can be significantly improved, and the conventional problems can be solved. In addition, the structure can be simplified, manufacturing and construction can be facilitated, and costs can be reduced. Of course, due to its structure, the number of mounting braces can be reduced in the frame, and the adverse effects of the braces (decrease in damping capacity) can be reduced.

According to the invention of claim 2, according to claim 1,
In a vibration damping device using a viscous or viscoelastic body, a plurality of cross-shaped dampers 10 are further laminated via the viscous or viscoelastic body 13 to form a plurality of layers. Item 1
In addition to the same effects as in the case (1), the number of layers can be easily and accurately adapted to the design situation of the frame 1, which is extremely convenient and convenient for use.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment according to the first and second aspects of the present invention.

FIG. 2 shows an embodiment according to the first aspect of the present invention.
FIG. 3 is a sectional view taken along line AA.

FIG. 3 shows an embodiment according to the invention of claim 2;
FIG. 3 is a sectional view taken along line AA.

FIG. 4 is a diagram showing a dynamic model in the embodiment according to the first and second aspects of the present invention.

FIG. 5 is a front view showing a specific example according to the invention of claim 2;

FIG. 6 is an enlarged cross-sectional view of FIG. 5B-B in the specific example.

FIG. 7 is an enlarged sectional view taken along the line CC of FIG. 5C in the specific example.

FIG. 8 is an enlarged sectional view taken along the line DD of FIG. 5 in the specific example.

FIG. 9 is a front view showing a first conventional example.

FIG. 10 is a diagram showing a dynamic model of the same example.

FIG. 11 is an enlarged perspective view showing a main part of a conventional damper using a viscous body or a viscoelastic body.

FIG. 12 is a front view showing a second conventional example.

FIG. 13 is a sectional view taken along the line E-E of FIG. 12;

FIG. 14 is a diagram showing a dynamic model of the same example.

FIG. 15 is a front view showing a third conventional example.

FIG. 16 is a cross-sectional view of the same example taken along line 15F-F.

FIG. 17 is a front view showing a specific example of the same example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Frame 2 ... Damper 3 ... Damper main body 4 ... Brace member 5 ... Damper 5a, 5b ... Series damper 6, 7 ... Steel plate 8 ... Viscous body or viscoelastic body 10 ... Crossed damper 11, 12 ... Crossed steel plate 13 ... viscous or viscoelastic body 14, 15 ... upper end 16, 17 ... left and right nodes on upper floor 18, 19 ... lower end 20, 21 ... lower left and right nodes 22 ... cover 23 ... through bolt

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[Procedure amendment]

[Submission date] May 6, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment according to the first and second aspects of the present invention.

FIG. 2 shows an embodiment according to the first aspect of the present invention.
FIG. 3 is a sectional view taken along line AA.

FIG. 3 is a view showing an embodiment of the invention according to claim 2;
FIG. 3 is a sectional view taken along line AA.

FIG. 4 is a diagram showing a dynamic model in the embodiment according to the first and second aspects of the present invention.

FIG. 5 is a front view showing a specific example according to the invention of claim 2;

FIG. 6 is an enlarged cross-sectional view of FIG. 5B-B in the specific example.

FIG. 7 is an enlarged sectional view taken along the line CC of FIG. 5C in the specific example.

FIG. 8 is an enlarged sectional view taken along the line DD of FIG. 5 in the specific example.

FIG. 9 is a front view showing a first conventional example.

FIG. 10 is a diagram showing a dynamic model of the same example.

FIG. 11 is an enlarged perspective view showing a main part of a conventional damper using a viscous body or a viscoelastic body.

FIG. 12 is a front view showing a second conventional example.

FIG. 13 is a sectional view taken along the line E-E of FIG. 12;

FIG. 14 is a diagram showing a dynamic model of the same example.

FIG. 15 is a front view showing a third conventional example.

FIG. 16 is a cross-sectional view of the same example taken along line 15F-F.

FIG. 17 is a front view showing a specific example of the same example.

FIG. 18 is a diagram showing a dynamic model of the same example.

[Description of Signs] 1 ... Frame 2 ... Damper 3 ... Damper body 4 ... Brace member 5 ... Damper 5a, 5b ... Damper in series 6,7 ... Steel plate 8 ... Viscous or viscoelastic body 10 ... Cross-shaped damper 11,12 ... crossed steel plate 13 ... viscous or viscoelastic body 14, 15 ... upper end 16, 17 ... left and right nodes on upper floor 18, 19 ... lower end 20, 21 ... left and right nodes on lower floor 22 ... copper 23 … Through bolt

Continuation of front page (72) Inventor Toshiya Kashimura 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Head Office

Claims (2)

[Claims] 1. A viscous or viscoelastic body 13 adapted to the form of both cross-shaped steel plates is sandwiched and integrated between two cross-shaped steel plates 11 and 12 having a plurality of ends arranged vertically. Crossed damper
10, the upper end of the one cross-shaped steel plate 11 in the cross-shaped damper 10 is on the upper floor side of the frame 1, and the lower end of the other cross-shaped steel plate 12 is the lower floor of the frame 1. A vibration damping device using a viscous body or a viscoelastic body which is joined to the side. 2. A vibration damping device using a viscous body or a viscoelastic body according to claim 1, wherein a plurality of said cross dampers are further laminated and formed in a plurality of layers via said viscous body or a viscoelastic body. .