JP2003278404A - Earthquake-proof structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new earthquake-proof structure that comprises precast concrete boards lower in cost than steel plates and no refractory cover necessary for them, adopts a structure applying no large loads to beams, and can be used or various building types, including Steel structure, Steel Reinforced Concrete structure, Reinforced Concrete structure, etc., at low cost. <P>SOLUTION: Within a structural frame consisting of columns 1 and beams 2, a plurality of precast concrete boards 3 are arranged in a vertical or horizontal direction, so that their longitudinal surfaces may face one another, and a viscoelastic material 5 is filled in the clearances formed between adjacent precast concrete boards and between precast concrete boards and columns or beams, or a plurality of precast concrete boards are attached in piles to the column side surfaces facing inward the structural frame and the viscoelastic material 5 is filled in the clearances formed between adjacent precast concrete boards and between the columns and precast concrete boards. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control structure that absorbs vibration energy due to horizontal load such as an earthquake by viscoelastic resistance of a viscoelastic body.

[0002]

2. Description of the Related Art In recent years, vibration control technology has been used to absorb the energy of shaking due to horizontal loads such as earthquakes, suppress the shaking of the building, and reduce the load on the structure of columns and beams that make up the building. It has been attempted to reduce the stress and equilibrate the stress by constructing a damping wall at a portion of the structure where stress is likely to be concentrated to construct a stable structure.

Various types of vibration control walls have been proposed in the past, but basically, as shown in FIGS. 11 and 12, a plurality of steel plates a are placed in a state where their plate surfaces face each other. They are arranged and alternately supported by upper and lower beams b so as to behave integrally, and a viscoelastic body c is interposed between the plate surfaces of the respective steel plates a.

However, in the damping wall based on the above-mentioned basic structure, unlike the damping mechanism such as the brace, stress is transmitted from the beam b to the steel plate a, and the energy is absorbed by the viscoelastic body c. When transmitting the stress to the steel plate a, a large load is generated on the beam b, and the beam b itself needs to have extra strength for that purpose. Therefore, steel frame construction (S construction) or steel frame reinforced concrete construction (SRC
However, there is a problem that it is difficult to adopt it in a reinforced concrete structure (RC structure). Further, in the seismic control wall using such a steel plate a, the steel plate a
In addition to being costly in itself, there is a problem in that it is necessary to perform fireproof coating on the steel sheet a in practical use, and the area of the fireproof coating is large, which is uneconomical.

[0005]

In view of the above situation, the present invention uses a precast concrete plate that is cheaper than a steel plate and does not require a fireproof coating, and provides a vibration control mechanism in which a large load is not applied to a beam. S type, SRC type,
It provides a new seismic control structure that can be adopted regardless of the structural type such as RC structure and can reduce the cost.

[0006]

The technical means taken by the present invention to solve the above problems are as follows. That is, the damping structure according to the invention of claim 1 is
In a structural frame consisting of columns and beams, a plurality of precast concrete boards are provided in parallel in the horizontal direction with their longitudinal surfaces facing each other, and between the longitudinal surfaces of adjacent precast concrete boards, between the precast concrete boards. Between the longitudinal surface and the pillar, between the edge face of the precast concrete plate and the beam, respectively, a predetermined gap is formed, the center position of the edge face of the precast concrete plate is hingedly joined to the upper and lower beams, The gap is filled with a viscoelastic body.

According to the above construction, when the pillar is tilted due to a horizontal force such as an earthquake, the upper and lower beams are displaced in the horizontal direction, and the precast concrete plates hinged to the beams are It rotates about the joint like a hinge. As a result, a viscoelastic body between the longitudinal surfaces of the precast concrete plate, a viscoelastic body between the longitudinal surface of the precast concrete plate and the pillar, and between the upper and lower beams and the front surface of the precast concrete plate. The viscoelastic bodies are distorted while resisting displacement and compression due to the rotation of the precast concrete plate, and when a horizontal force in the opposite direction is applied, the direction is opposite, but the same displacement and compression as above. The viscoelastic body's tenacity while deforming absorbs energy and reduces the stress applied to the structural frame composed of columns and beams.

That is, in the invention described in claim 1, each precast concrete plate is not rigidly joined to the upper and lower beams, and the precast concrete plate is rotated by the structural frame composed of the pillar beams, and the viscoelasticity caused by the rotation. Since the energy is absorbed by the tenacity resistance of the body, it does not give a large load to the beam unlike the conventional damping wall, and there is no need to specially reinforce the columns and beams.
It can be easily adopted not only for S structures and SRC structures but also for RC structures.

Moreover, the fireproof coating is not required for the precast concrete plate, and the area requiring the fireproof coating is significantly reduced as compared with the conventional damping wall which uses the steel plate. The cost can be reduced because the plate itself is cheaper than the steel plate.

The vibration control structure according to the invention of claim 2 is
In a structural frame consisting of columns and beams, a plurality of precast concrete boards are provided in parallel in the vertical direction in the form of a stack with their longitudinal surfaces facing each other, and between the longitudinal surfaces of adjacent precast concrete boards. , A predetermined gap is formed between the front face of the precast concrete plate and the pillar, and between the long face of the precast concrete plate and the beam, and the center position of the front face of the precast concrete plate contacts the columns on both sides. It is characterized in that the viscoelastic body is filled in the gap by contacting or hinge-joining.

According to the above construction, the precast concrete plates are not rigidly joined to the upper and lower beams, and when the columns are tilted due to horizontal force such as an earthquake, they come into contact with the columns or hinge-like. Each precast concrete board is pushed by the joint and is displaced in the horizontal direction. As a result, there is a viscoelastic body between the longitudinal surfaces of the precast concrete board, a viscoelastic body between the edge of the precast concrete board and the pillar, and between the upper and lower beams and the longitudinal surface of the precast concrete board. The viscoelastic body is strained while resisting displacement and compression due to horizontal movement of the precast concrete board, and when a horizontal force in the opposite direction is applied, the direction is opposite, but the same displacement and compression as above The viscoelastic body repeatedly bends while resisting, and the viscoelastic body's resistance to warp absorbs energy and reduces stress applied to the frame composed of the pillars and beams. In this case, the viscous resistance force of the wall plate that is brought into contact with the pillar has a great feature that it has the effect of mechanically reducing the shearing force generated in the pillar as it is.

Further, as can be easily understood from the above description, according to the inventions of claims 1 and 2, when a concrete wall is provided in the form of a boundary wall or the like, it is It can be used as is for seismic control walls. Furthermore, the damping performance can be changed significantly and freely by increasing or decreasing the number of divided precast concrete plates in the same wall, which facilitates the design as a vibration control structure.

A vibration control structure according to a third aspect of the invention is
In a structural frame composed of columns and beams, a pair of steel plates protruding from the side faces of the columns and the upper and lower beams, and a precast concrete plate whose outer periphery is covered by the steel plates are provided.
It is characterized in that a predetermined gap is formed between the plate surface of the precast concrete plate and the steel plate, and the gap is filled with a viscoelastic body.

According to the above construction, the precast concrete plate is not rigidly joined to the column or the upper and lower beams, and even if the column is tilted due to horizontal force such as an earthquake, the precast concrete plate is directly stressed. Since it does not take any damage, even if there is a window or entrance door inside the precast concrete plate, it is possible to prevent the deformation of the window frame and the door frame due to the earthquake, and it can be applied to a non-bearing wall.

The vibration control structure according to the invention of claim 3 is
On the side surface of the pillar of the structural frame consisting of pillars and beams, a plurality of precast concrete boards are provided in parallel in the horizontal direction with the board surfaces facing each other, and between the board surfaces of adjacent precast concrete boards, precast Between the plate surface of the concrete plate and the pillar, between the upper and lower edge face of the precast concrete plate and the upper and lower beams, respectively, are arranged such that a predetermined gap is formed, at least adjacent among the gaps. It is characterized in that a gap between the plate surfaces of the precast concrete plate and a gap between the plate surface of the precast concrete plate and the column are filled with a viscoelastic body.

According to the above construction, the precast concrete plates are not rigidly joined to the upper and lower beams, and when the columns are tilted due to horizontal force such as an earthquake, the precast concrete plates fall down in accordance with the tilt. At the same time, a substantially vertical displacement occurs between the columns and the precast concrete plates and between the precast concrete plates. Thereby, the viscoelastic body between the precast concrete plates, the viscoelastic body between the pillar and the precast concrete plate is strained while resisting the displacement in the substantially vertical direction, and the horizontal force in the opposite direction to the above. When the column is tilted, the precast concrete plate falls in the opposite direction at the same time as the column tilts, and at the same time, a vertical displacement occurs, which causes the same vertical displacement as described above to be distorted and repeated. The tenacity of the elastic body, which is distorted while resisting, absorbs energy and reduces the stress applied to the structural frame composed of columns and beams.

As described above, also in the invention described in claim 4, since each precast concrete plate is not rigidly joined to the upper and lower beams, there is no load on the beams unlike the conventional damping wall. Since there is no need to specially reinforce columns and beams, it can be easily adopted not only in S and SRC structures but also in RC structures, and no fireproof coating is required for precast concrete plates. Compared with the conventional seismic control wall that used, the area that requires fireproof coating is significantly reduced and the cost of precast concrete plate itself is cheaper than steel plate, so the cost can be reduced. is there.

[0018]

1 to 5 show an example of a vibration control structure according to the invention of claim 1. As shown in FIG. 1 (A) and FIG. 3, this vibration control structure includes a plurality of precast concrete plates 3 molded in a vertically long rectangular shape in a structural frame composed of columns 1 and beams 2 in the longitudinal direction. Face (end face on the long side)
Are provided side by side in parallel in the horizontal direction so as to face each other, between the long surfaces of the adjacent precast concrete plates 3, between the long surfaces of the precast concrete plates 3 and the pillars 1, and the front face of the precast concrete plates 3 (short side Side end face) and the beam 2 respectively, a predetermined gap is formed, and the center position of the front face of the precast concrete plate 3 is the upper and lower beams 1.
Is hingedly joined at the joint portion 4, and the gap is filled with the viscoelastic body 5.

According to the above construction, as shown in FIG. 1B, when the pillar 1 is tilted by a horizontal force (arrow F) such as an earthquake, the upper and lower beams 2 are displaced in the horizontal direction. Then, each precast concrete board 3 hingedly connected to the beam 2 rotates around the upper and lower hinge-like joints 4. Thereby, the viscoelastic body 5 between the longitudinal surfaces of the precast concrete board 3, the viscoelastic body 5 between the longitudinal surface of the precast concrete board 3 and the column 1, the upper and lower beams 2 and the precast concrete board 3 are provided. The viscoelastic body 5 between the edge surface and the front surface is distorted while resisting displacement and pressure caused by the rotation of the precast concrete plate 3.

When the column 1 is tilted in the opposite direction by the horizontal force in the opposite direction, the precast concrete plate 3 is rotated in the opposite direction to the state shown in FIG. The elastic body 5 is distorted while resisting the same displacement and compression as described above, and this is repeated during an earthquake, and the viscoelastic body 5 resisting and distorting is absorbed by the energy of the shaking due to the horizontal load, and the pillar 1 The stress applied to the structural frame composed of the beams 2 is reduced.

That is, in the above-described vibration control structure, each precast concrete plate 3 is not rigidly joined to the upper and lower beams 2, but the precast concrete plate 3 is rotated by the structural frame composed of the pillars 1 and the beams 2. Since the viscoelastic body 5 absorbs energy by viscoelastic resistance due to rotation, a large load is not applied to the beam 2 and there is no need to specially reinforce the beam or the like. Can be easily adopted.

Moreover, the precast concrete plate 3 does not need a fireproof coating, and the area requiring the fireproof coating is significantly reduced as compared with the conventional vibration control wall using a steel plate. Since the concrete plate 3 itself is less expensive than the steel plate, the cost can be reduced.

The above-mentioned vibration control structure is used when a building having a piloti on the first floor, a storehouse or a parking lot on the first floor in an apartment house, or a large lobby on the first floor in a hotel. It is particularly effective when used for the column beam frame on the first floor. Further, in a middle-high-rise building of about 5th to 14th floors, a structurally stable frame frame can be constructed by using the above-described vibration control structure on the walls of the first floor, the second floor, and the third floor.

The hinge joint 4 between the upper beam 2 and the precast concrete board 3 is taken into consideration in the pulling out by the rotation of the precast concrete board 3 around the hinge joint 4 as shown in FIGS. 3 and 4. , Reinforcement bars for arranging the diagonal joint bars 6 and for constraining the concrete at the hinge joint part (in the example shown, a spiral bar having a small vertical center portion is used,)
7 is arranged. Reference numeral 8 is a reinforcing bar of the precast concrete plate 3, 9 is a beam main bar, and 10 is a beam rib. 1
1 is a main pillar muscle, and 12 is a hoop muscle.

The hinge-like joint 4 between the lower beam 2 and the precast concrete plate 3 may have the same structure as the upper hinge-like joint 4, but in this example, the workability is taken into consideration. As shown in FIGS. 3 to 5, the hinge component plate 4a is embedded in the concrete of the beam 2 so as to project from the top of the beam, and the hinge component plate 4a is embedded at the lower end of the precast concrete plate 3 so as to project from the forefront. The hinge component plate 4b is joined with the pin 4c. Reference numeral 13 is a beam-side hinge component plate reinforcing bar, and 14 is a precast concrete plate-side hinge component plate reinforcing bar.

The above-mentioned vibration control structure is constructed, for example, by the following method. First of all, when constructing the lower floor, in the beam formwork,
The beam-side hinge component plate 4a is set at the same time as the beam reinforcement, and concrete is poured.

After the beam concrete is hardened, the precast concrete plate 3 is built. At that time, while maintaining a gap between the beam 2 and the precast concrete plate 3 with a wedge or the like, the beam-side hinge component plate 4a and the precast concrete plate 3-side hinge component plate 4b are polymerized and joined by a pin 4c.

After that, with the temporary support material (not shown) for preventing the precast concrete board 3 from tilting, the pillar 1 is held in a state where the posture of the precast concrete board 3 is maintained.
Reinforcement and construction of the form, such as the upper beam 2 and the like. that time,
As shown in FIG. 3 and FIG. 4, since the upper ends of the joint reinforcing bars 6 and the restraining reinforcing bars 7 project from the upper ends of the precast concrete plates 3, they are arranged so as to be taken into the beams 2. Further, in order to maintain a gap between the precast concrete plate 3 and the upper beam 2, foamed plastic or the like is inserted between the precast concrete plate 3 and the beam form.

Next, concrete is cast on the upper beam 2, and after the curing period, the mold is demolded, and the above-mentioned wedges and foamed plastics are removed, and the longitudinal surface of the adjacent precast concrete plate 3 is removed. A gap between them, a gap between the longitudinal surface of the precast concrete plate 3 and the pillar 1,
The gaps between the edge of the precast concrete plate 3 and the beam 2 are filled with the viscoelastic body 5, respectively, to construct the vibration control structure shown in FIGS. 1 to 3.

As the viscoelastic body 5, a bituminous viscoelastic body such as asphalt containing a polymer or a resin viscoelastic body such as rubber containing a polymer is used.

In the above example, the case where the beam 2 is constructed of cast-in-place concrete is explained, but when the beam 2 is precast concrete, the hinge-like joint portion 4 on the upper side of the precast concrete plate 3 is also Hinge component plate 4
It may be constructed by sequentially connecting a and 4b and the pin 4c. Similarly, when the beam has an S structure or an SRC structure, the hinge-like joint portion 4 is formed by the hinge constituent plates 4a and 4b and the pin 4c.
It is better to use. Further, although not shown, in this example, the upper and lower beams are provided with guide portions (grooves made of concrete) or guide rail members that force the adjacent precast concrete plates 3 to rotate with their long sides facing each other. .

FIG. 6 shows an example of the vibration control structure according to the invention of claim 2. As shown in FIG. 6 (A), this vibration control structure includes a plurality of precast concrete plates 3 formed in a horizontally long rectangular shape in a structural frame composed of columns 1 and beams 2.
Are provided in parallel in the vertical direction with their long sides (end faces on the long side) facing each other, and between the long faces of the precast concrete plates 3 adjacent to each other, the edge face of the precast concrete plates 3 (on the short side). End face) and the pillar 1, between the longitudinal surface of the precast concrete plate 3 and the beam 2, respectively, a predetermined gap is formed, the center position of the forefront surface of the precast concrete plate 3 on the pillar 1 on both sides, The viscoelastic body 5 is abutted through the abutting portion 15 protruding in a convex shape, and the viscoelastic body 5 is filled in the gap.

Although the abutting portion 15 which is raised in a convex shape is formed on the edge side of the precast concrete plate 3, it may be formed on the column side, conversely. Although not shown, a vertical holding member is provided between the upper and lower beams 2 for holding the precast concrete boards 3 aligned in the vertical direction in a vertical state. Further, in the illustrated example, the convex portion 16 is formed on the longitudinal surface of the precast concrete plate 3 so that the convex portion 16 holds a gap between the upper and lower precast concrete plates 3.
By locking the precast concrete board 3 to the vertical holding member, a gap may be held between the upper and lower precast concrete boards 3.

According to the above construction, each precast concrete plate 3 is not rigidly joined to the upper and lower beams 2, and as shown in FIG. 6B, the horizontal force (arrow F) such as an earthquake is applied.
As a result, when the pillar 1 is tilted, each precast concrete board 3 is pushed by the contact portion 15 with the pillar 1 and is displaced in the horizontal direction. Thereby, the viscoelastic body 5 between the longitudinal surfaces of the precast concrete board 3, the viscoelastic body 5 between the forefront surface of the precast concrete board 3 and the pillar 1, the upper and lower beams 2 and the precast concrete board 3 are provided. The viscoelastic body 5 between the longitudinal surface and each of them is distorted while resisting the displacement and compression due to the horizontal movement of the precast concrete plate 3, and when the horizontal force in the opposite direction is applied, the same displacement and compression as described above are caused. Repeatedly distorting while resisting, such viscoelastic body 5 resisting and distorting absorbs the energy of shaking due to horizontal load,
The stress applied to the structural frame composed of pillars 1 and beams 2 will be reduced.

The damping structure shown in FIG. 6 is constructed, for example, by the following method. First, after the casting of the concrete on the lower floor is completed, the precast concrete plate 3 is built in, and the precast concrete plate 3 is fixed by a temporary support material that prevents the precast concrete plate 3 from tilting.
With the posture maintained, the reinforcement of the columns 1 and the beams 2 and the construction of the formwork are performed. At that time, precast concrete board 3
In order to maintain the gap between the upper beam 2 and the upper beam 2, foamed plastic or the like is inserted between the precast concrete plate 3 and the beam form.

Next, concrete is cast on the pillar 1 and the upper beam 2 and the like, and after the curing period, the mold is removed and the foamed plastic and the like are removed. The viscoelastic body 5 is filled in the gap, the gap between the edge of the precast concrete plate 3 and the pillar 1, and the gap between the longitudinal face of the precast concrete plate 3 and the beam 2, respectively.

After that, the precast concrete plate 3
The vertical holding member (not shown) is fixed over the upper and lower beams 2, and the above-mentioned temporary support member is removed to obtain the vibration control structure shown in FIG.

In the case where the pillar 1 and the beam 2 are made of S or SRC,
The basic structure is the same as the above, but the pillar 1 is an S-shaped H
In the case of shaped steel, it is desirable that the abutting portion 15 formed on the side of the precast concrete plate 3 is configured to abut the web portion of the H-shaped steel. Also, although not shown,
A guide portion (concrete groove on the pillar) or a guide rail member for maintaining the verticality of the precast concrete plate 3 is provided by arranging it over the upper and lower beams or along the pillar.

FIG. 7 shows an example of a vibration control structure according to the invention of claim 3. This vibration control structure includes a pair of steel plates 22 having a rectangular frame shape protruding from the side surface of the pillar 1 and the upper and lower beams in a structural frame composed of the pillar 1 and the beams (not shown), and the outer peripheral portion by the steel plates 22. And one sheet of precast concrete plate 3 that covers the sheet, a predetermined gap is formed between the plate surface of the precast concrete plate 3 and the steel plate 22 facing it, and the viscoelastic body 5 is filled in the gap. It will be.

According to the above construction, the precast concrete board 3 is not rigidly joined to the pillar 1 or the upper and lower beams,
Even if the pillar 1 is tilted due to a horizontal force such as an earthquake, the precast concrete plate 3 is not directly stressed. Therefore, even if there is a window or a front door inside the precast concrete plate 3, a window frame caused by the earthquake or Since the deformation of the door frame can be prevented, it can be applied to non-bearing walls.

8 to 10 show an example of the vibration control structure according to the invention of claim 4. This vibration control structure is shown in FIG.
As shown in FIGS. 9 and 10, a vertically long rectangular shape having the same lateral width as the pillar 1 and a vertical dimension slightly shorter than the distance between the upper and lower beams 2 on the side surface of the pillar 1 in a structural frame composed of the pillar 1 and the beam 2. Multiple precast concrete boards molded into 3
However, the plate surfaces are made to face each other and are stacked in the horizontal direction,
Between the plate faces of the adjacent precast concrete plates 3, between the plate faces of the precast concrete plates 3 and the pillars 1, and between the upper edge face of the precast concrete plates 3 and the upper beams 2, respectively, The viscoelastic body 5 is arranged in a state in which a gap is formed, and among the gaps, at least the gap between the plate surfaces of the precast concrete plates 3 adjacent to each other and the gap between the plate surface of the precast concrete plate 3 and the pillar 1 are filled. It has been done.

In the illustrated example, the viscoelastic body 5 is also filled in the gap between the upper edge surface of the precast concrete plate 3 and the upper beam 2, and the lower edge surface of the precast concrete plate 3 is The viscoelastic body 5 is filled with a local convex portion 17 that comes into contact with the beam 2 or the floor slab to form a gap between the lower edge of the precast concrete plate 3 and the lower beam 2. However, these viscoelastic bodies 5 may be omitted. In addition, on the plate surface of the precast concrete plate 3, a locally raised protrusion 18 is formed at a predetermined position and brought into contact with the pillar 1 or the adjacent precast concrete plate 3 to secure a predetermined gap. It is configured to.

The precast concrete plate 3 is attached to the pillar 1 by an anchor 19, a band-shaped ring 20, an angle member 21 and the like. However, with respect to the upper part other than the column base, especially when using the anchor 19, the attachment of the precast concrete plate 3 to the column 1 needs to be loose so as not to hinder the behavior of the precast concrete plate 3. is there. Although the precast concrete board 3 is attached after the pillars 1 and the beams 2 are constructed, the injection of the viscoelastic body 5 between the precast concrete boards 3 and between the precast concrete board 3 and the pillar 1 is performed. If it is difficult, the sheet-shaped viscoelastic body 5 may be sandwiched between them.

According to the above construction, each precast concrete plate 3 is not rigidly joined to the upper and lower beams 2, and as shown in FIG. 7B, horizontal force (arrow F) such as an earthquake is applied.
As a result, when the pillar 1 is tilted, the precast concrete plate 3 is tilted in accordance with the tilt, and at the same time, a substantially vertical deviation is generated between the pillar 1 and the precast concrete plate 3 and between the precast concrete plates 3. . As a result, the viscoelastic body 5, the pillar 1 and the precast concrete board 3 in the gap between the precast concrete boards 3 are
The viscoelastic body 5 between and is strained while resisting the displacement in the substantially vertical direction, and further, when a horizontal force in the opposite direction is applied, the precast concrete plate 3 is moved in the opposite direction due to the inclination of the column 1. At the same time as falling, a substantially vertical displacement occurs, and the same repeated vertical displacement causes resistance to distort, and the viscoelastic body 5 resisting and distorting causes the horizontal energy to vibrate. Is absorbed and the stress applied to the structural frame composed of the pillar 1 and the beam 2 is reduced.

The basic structure is the same as above even when the pillar 1 is an S structure or an SRC structure. However, when the pillar 1 is an S structure H-shaped steel, the web portion or flange of the H-shaped steel is used. The precast concrete boards 3 are arranged side by side so as to face the parts.

[0046]

EFFECTS OF THE INVENTION The present invention has the above-mentioned structure, and uses a precast concrete plate which is cheaper than a steel plate and does not require a fireproof coating, and has a vibration control mechanism in which a large load is not applied to the beam. , RC structure can be adopted regardless of the structure type, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an example of a vibration control structure according to the present invention.

FIG. 2 is a cross-sectional view.

FIG. 3 is a perspective view of a main part.

FIG. 4 is a bar arrangement diagram showing an example of a hinge joint portion.

FIG. 5 is a vertical sectional view of a main part.

FIG. 6 is a diagram illustrating another example of the vibration control structure according to the present invention.

FIG. 7 is a cross-sectional view illustrating another example of the vibration control structure according to the present invention.

FIG. 8 is a diagram illustrating another example of the vibration control structure according to the present invention.

9 is a cross-sectional view taken along line XX of FIG.

10 is a sectional view taken along line YY of FIG. 8 (A).

FIG. 11 is a front view illustrating a conventional example.

FIG. 12 is a vertical cross-sectional view illustrating a conventional example.

[Explanation of symbols] 1 ... Pillar, 2 ... Beam, 3 ... Precast concrete plate, 5
… Viscoelastic body.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F16F 15/04 F16F 15/04 A F term (reference) 2E002 EA03 EB13 FB03 GA14 GA16 HA02 HB14 HB16 JA01 JA02 JB14 JB16 MA12 3J048 AA06 AC05 AD05 BD08 EA38

Claims (4)

[Claims] 1. A plurality of precast concrete boards are provided in parallel in a horizontal direction in a structural frame composed of columns and beams, with their longitudinal surfaces facing each other, and between the longitudinal surfaces of adjacent precast concrete boards. , A predetermined gap is formed between the longitudinal surface of the precast concrete plate and the pillar, and between the edge of the precast concrete plate and the beam, and the center position of the edge of the precast concrete plate is hinged to the upper and lower beams. Damping structure in which the viscoelastic body is filled in the gap. 2. A plurality of precast concrete boards are provided in a vertical stack in a stacked manner with their longitudinal faces opposed to each other in a structural frame composed of columns and beams. Between the longitudinal surfaces, between the edge face of the precast concrete plate and the pillar, between the longitudinal face of the precast concrete plate and the beam, respectively, a predetermined gap is formed, the center position of the edge face of the precast concrete plate A damping structure, which is abutted or hingedly joined to columns on both sides, and the gap is filled with a viscoelastic body. 3. A precast concrete plate provided with a pair of steel plates protruding from side surfaces of the column and upper and lower beams, and a precast concrete plate whose outer peripheral portion is covered with the steel plates, in a structural frame composed of columns and beams. A predetermined gap is formed between the plate surface and the steel plate, and the gap is filled with a viscoelastic body. 4. A plurality of precast concrete boards are provided on the side surface of a pillar of a structural frame composed of pillars and beams in a horizontal direction with the board surfaces facing each other, and the board surfaces of adjacent precast concrete boards are adjacent to each other. Between, the plate surface of the precast concrete plate and the pillar, between the upper and lower edge surface of the precast concrete plate and the upper and lower beams, respectively, are arranged in a state that a predetermined gap is formed, A part of the lower part or the like is fixed to the pillar, and at least the gap between the plate surfaces of the adjacent precast concrete plates and the gap between the plate surface of the precast concrete plate and the pillar are filled with the viscoelastic body among the gaps. A vibration control structure characterized by that.