JPH09184322A - Damping stud - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a damping stud which is capable of maintaining an opening of a building with ease and selecting its set up position as well and securing proper rigidity and strength. SOLUTION: At least two studs 10 are incorporated into an inside space of a main frame which comprises beams 3 on the upper and lower floors and a pair of posts 4. The mutual space between each stud 10 is formed with an arbitrary number of horizontal members 12 in the form of a lattice where they are mounted in an offset state, thereby reinforcing horizontally and mutually a pair of studs 10 with each horizontal member 12 and thereby enhancing the rigidity and strength. When an earthquake broke out, for example, the studs 10 and the horizontal member 12 are arranged to yield to the earthquake or the like ahead of the main frame, thereby providing a damping effect. The studs 10 and the horizontal members 2 can be laid out at an arbitrary location and they can be provided in conformity with a plane project, such as an entrance or the other opening, avoiding those areas.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic control stud that can easily secure an opening of a building and can secure appropriate rigidity and proof stress.

[0002]

2. Description of the Related Art As one of the vibration control devices, there is a vibration control device installed on each floor. In each of these, a link as a vibration-damping member made of steel with low yield strength is incorporated into part of the Y-shaped brace or stud, and these links precede the main frame consisting of columns and beams during a medium- or large-scale earthquake. By using the stable elasto-plastic hysteretic damping characteristic of steel, the seismic control effect is added to the frame.

FIG. 1 shows a seismic control Y-shaped brace 1 incorporating a vibration control device. The brace 1 is inside a space of a main frame surrounded by beams 2 and 3 and a pair of columns 4 on upper and lower floors. The link 5 is incorporated in the joint between the brace 1 and the beams 2 and 3.

FIG. 2 shows that the slab 2 is located between the pillars 4.
The seismic resistant stud 6 is arranged between the stud and the beam 3, and the link 5 is incorporated at an intermediate position of the stud 6.

[0005]

However, in the case of incorporating the former Y-shaped brace 1, it becomes difficult to take openings such as entrances and exits and windows on the wall surface on which the brace is placed, and It gives a big restriction to the plan.

When the seismic control studs 6 are incorporated, the rigidity of the studs 6 is significantly lower than the rigidity of the entire frame, and there is a drawback that a large seismic control effect cannot be expected in an ordinary building.

The present invention solves the above problems and not only secures the opening of the building but also facilitates the selection of the installation position and can secure appropriate rigidity and proof strength. Is intended to provide.

[0008]

In order to achieve the above-mentioned object, the present invention incorporates two or more studs into the internal space of a main frame composed of beams and pillars on the upper and lower floors, and connects the studs to each other. By connecting any number of horizontal members in a ladder shape or in a stepped shape, it is possible to secure an opening and to give appropriate rigidity and proof strength to the seismic control stud.

[0009]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. It should be noted that the same parts as those of the conventional device are designated by the same reference numerals, and different parts are denoted by different reference numerals.

FIG. 3 shows a first embodiment of the present invention. As shown in the figure, a pair of studs 10 are arranged in the inner space of the main frame composed of beams 2 and 3 and columns 4 on the upper and lower floors, and both studs 10 are ladder-shaped by a plurality of horizontal members 12. The structure is connected to.

Each horizontal member 12 reinforces the pair of studs 10 horizontally to enhance its rigidity and proof strength, and in the event of an earthquake or the like, the horizontal member 12 itself yields prior to the main frame so that it is restrained. I try to get a seismic effect.

Here, the studs 10 and the horizontal members 12 can be arranged at arbitrary positions between the pillars 4, and the studs 10 and the horizontal members 12 can be arranged at positions avoiding this according to the plan of the entrance and other openings. it can.

FIG. 4 shows a second embodiment of the present invention. In the second embodiment, a plurality of horizontal members 12 connected in a ladder shape between a pair of studs 10 are subjected to shear yielding or bending yielding in the central portion earlier than the side portions 12a, 12a, thereby causing plastic deformation. The link 14 which does is incorporated.

That is, when the stud 10 and the horizontal member 12 are also deformed due to the deformation of the frame and stress is generated, the stress generated in the link 14 first exceeds the yield strength and the link 14 is plastically deformed. From this stage, hysteresis damping performance due to elasto-plastic behavior is generated in the horizontal member 12 and the damping effect is exerted.

In this embodiment, the desired damping effect can be obtained by selecting the characteristics such as the material of the members forming the link 14 and the shape according to the target vibration level. In addition, the arrangement positions of the studs 10 and 10 in the building, the intervals between the studs 10, the joining positions of the studs 10 and the beams 2 and 3 and the joining method (difference in joining methods such as pin joining or rigid joining), The length of the link 14 incorporated in the horizontal member 12 (may be the total length of the horizontal member 12) and the like can be arbitrarily selected.

The link 14 is, for example, as shown in FIG.
It is configured as shown in (b) and (c). That is, link 1
Reference numeral 4 indicates a multi-stage box frame shape in which the stiffeners 15a and 15b of the steel plates are also arranged vertically and horizontally on both sides of the partition plate 15c of the steel plate along the vertical direction and the horizontal direction and integrally joined in a grid pattern. The steel plate unit 15 is used. The steel plate unit 15 has left and right end portions connected to the left and right side horizontal members 12a and 12a, respectively, with a connecting plate 16 and a large number of bolts 1.
Connect via 7.

Further, as shown in FIGS. 5 (b) and 5 (c),
A plate-shaped lead 18 that absorbs a small vibration by plastic deformation may be attached to the surface of the steel plate of the unit 15. In the illustrated example, the plate-shaped lead 18 is the unit 1
In each of the box-frame-shaped partitions of No. 5, a plurality of them are integrally mounted and fixed to the front and rear surfaces of the partition plate 15c by the bolts 19, and are deformed following the 15 shear deformation of the unit. Thus, the thickness of the plate-shaped lead 18 is set to such an extent that vibration of small deformation in the elastic region of the unit 15 can be absorbed mainly by plastic deformation due to shear yield. That is, when the unit 15 elastically deforms, the plate-like lead 18 integrally attached to the steel plate surface of the partition plate 15c of the unit 15 following the displacement is deformed mainly by the shear force, and the plate-like lead 18 is deformed. Under a low load and small displacement within the elastic deformation region of the steel plate, it shear-yields early and becomes plastic. Then, thereafter, the plastic deformation absorbs and damps the vibration of the small displacement of the steel sheet.

Further, in FIG. 5, the plate-like lead 18 is formed into a flat plate according to the frame shape of the stiffeners 15a and 15b, and is attached only to the partition plate 15c.
Other shapes are possible, and FIG. 6 shows another example of the shape. That is, in addition to the rectangular flat plate shape shown in (a) of FIG. 6, a recessed part is formed in the center as shown in (b),
As shown in (c), mounting flanges are formed on both upper and lower sides to have a U-shaped cross section, and the flanges are fixed to the upper and lower stiffeners 15b to be mounted, or as shown in (d). Flanges are formed on the entire circumference of the upper, lower, left, and right peripheral parts to form a box shape, and the stiffeners 15 on the four surrounding surfaces are formed.
It is possible to give various shapes depending on the opening shape of the unit 15 and the mounting method, such as those fixedly attached to a and 15b. Further, the plate thickness, the number of attachments, the arrangement, and the like are set to values having optimum characteristics in accordance with the predicted input energy level of vibration. Note that the plate-shaped lead 18 may be provided so as to be fitted into the inner peripheral edge on the opening side of each box-frame-shaped partition of the unit 15.

FIGS. 7A and 7B show a third embodiment of the present invention. In the third embodiment in the figure, in the second embodiment, the link 24 is also interposed at the joint between the pair of studs 10 and the beams 2, 3. In this embodiment, by selecting the characteristics of the link 24, it is possible to yield according to the vibration level generated between the studs 10 and the joints with the beams 2 and 3 during an earthquake. The installation position can be arranged at any position between the pillars 4 according to the plan as shown in FIGS.

FIGS. 8A and 8B show a fourth embodiment of the present invention. In FIG. 8A, three studs 10 are arranged, and the studs 10 are connected in parallel and in a ladder shape by a plurality of horizontal members 12, and the intermediate position between the studs 10 of each horizontal member 12 is
They are linked by a link 14.

Further, in FIG. 8B, the left and right horizontal members 12 with the central stud 10 sandwiched therebetween are arranged in a staggered manner, and the central positions of the respective horizontal members 12 are connected by a link 14. ing. This embodiment is suitable when it is desired to set the proof stress level of the studs high.

FIG. 9 shows a fifth embodiment of the present invention. In the figure, a plurality of horizontal members 12 are arranged in a ladder shape between a pair of studs 10, and both ends of the horizontal member 12 and each stud 10 are joined via links 26. Also in this embodiment, the link 26 is the same as in the second embodiment.
It is possible to obtain a vibration control effect according to the characteristics of.

FIG. 10 shows a sixth embodiment of the present invention. In the figure, a pair of studs 10 are directly connected in a ladder shape by a plurality of links 28 which also serve as horizontal members.
In this embodiment, the link 28 also serves as a horizontal member, so that the connecting work can be easily performed.

[0024]

As described in the above embodiments, in the present invention, two or more studs are incorporated in the internal space of the main frame composed of beams and columns on the upper and lower floors. Since the studs are connected to each other in a ladder shape or a stepped shape with an arbitrary number of horizontal members, it is easy to secure an opening and at the same time, appropriate rigidity and proof strength can be given to the seismic control studs, and the floor plan of the building There is an advantage that an appropriate vibration control effect can be obtained without hindering the vibration, and the horizontal member can also be used as a base of the finishing material.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a conventional seismic damping device to which a Y-shaped brace is applied.

FIG. 2 is an explanatory diagram of a conventional damping stud.

FIG. 3 is an explanatory view showing a vibration control stud twisted in the first embodiment of the present invention.

FIG. 4 is an explanatory view showing a vibration control stud according to a second embodiment of the present invention.

5A and 5B show in detail the damping stud of the second embodiment, where FIG. 5A is an overall front view, FIG. 5B is a front view of a main part, and FIG.
FIG. 4 is a sectional view taken along line AA of FIG.

6 (a) to 6 (d) are perspective views showing various examples of the shear yield type plate-shaped lead.

7 (a) and 7 (b) are explanatory views showing a vibration control stud according to a third embodiment of the present invention.

8 (a) and 8 (b) are explanatory views showing a vibration control stud according to a fourth embodiment of the present invention.

FIG. 9 is an explanatory diagram showing a vibration control stud according to a fifth embodiment of the present invention.

FIG. 10 is an explanatory diagram showing a vibration control stud according to a sixth embodiment of the present invention.

[Explanation of symbols]

 2,3 beams 4 columns 10 studs 12 horizontal members 14, 24, 26, 28 links

Claims (2)

[Claims] 1. Two or more studs are incorporated in an inner space of a main frame composed of beams and columns on upper and lower floors, and the studs are connected in a ladder shape or a stepped shape by an arbitrary number of horizontal members. Seismic control studs that are characterized. 2. The seismic isolation stud according to claim 1, wherein the horizontal member includes a link formed of a material that yields prior to the main frame when an earthquake occurs.