JP2000240320A - Viscoelastic wall and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To costlessly manufacture a viscoelastic wall in an industrial scale. SOLUTION: A rope-shaped seal member 5 made of a viscoelastic material is interposed between the outer peripheral edges of steel plates 3. A filling space surrounded by the sealing material 5 is formed between these steel plates 3 and a viscoelastic material 4 is injected to fill the space. Such a substance that is fluid in the normal temperature or in a heated state and retains the fluid condition or is solidified such as synthetic resin or asphalt, is preferable as the viscoelastic material. Silicone rubber is used for the seal member 5. A fire-resistant seal material 7 is attached to the external side of the seal member 5. The seal member 5 is put between the outer peripheral edges of the steel plates 3 to define a filling space and the viscoelastic material 4 is injected to fill the space in the normal temperature or in a heated condition. One internal steel plate 3b is put between two external steel plates 3a. The seal member 5 is put between the mutual external peripheral edges of the internal steel plate 3b and the external steel plates 3a or between the mutual outer peripheral edges of the external steel plates 3a and the mutual outer peripheral edges of the external steel plates are tightened by bolts 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a viscoelastic wall having a structure in which a viscoelastic material is interposed between laminated steel sheets, and a method for manufacturing the same.

[0002]

2. Description of the Related Art In recent years, viscoelastic walls installed as seismic dampers in buildings have been developed and put to practical use. This is installed as a wall between the column 1 and the beam 2 as shown in FIG. 10, and is composed of a plurality of laminated steel plates 3 and a viscoelastic material 4 interposed therebetween. is there. In the illustrated example, the viscoelastic material 4 is sandwiched between two outer steel plates 3a fixed to the lower beam 2a and rising and one inner steel plate 3b fixed to the upper beam 2b and falling. The outer steel plate 3a and the inner steel plate 3b are bonded by the viscoelastic material 4. In the viscoelastic wall having such a configuration, when the building undergoes interlayer displacement during an earthquake, the outer steel plate 3a and the inner steel plate 3b are relatively displaced in the plane, and vibration energy is generated by viscous resistance of the viscoelastic material 4 generated at that time. Can be absorbed to attenuate the vibration of the building.

[0003]

By the way, an effective technique for producing the viscoelastic wall as described above on an industrial scale has not yet been established, and is disclosed, for example, in Japanese Patent Application Laid-Open No. 1-97766. After the outer steel plate 3a is assembled in a box shape and a liquid viscous material is injected into the outer steel plate 3a,
Production methods such as inserting b or asphalt as the viscoelastic material 4 and processing it into a sheet and sandwiching it between the steel plates 3 have been attempted, but all of these methods significantly increase the production cost. The viscoelastic wall thus manufactured is inconvenient to handle and requires troublesome maintenance. Therefore, it is urgently necessary to develop an effective viscoelastic wall which can be manufactured at low cost and a method for manufacturing the same. It was supposed to be.

[0004]

According to a first aspect of the present invention, there is provided a viscoelastic wall formed by laminating a plurality of steel plates with a viscoelastic material interposed therebetween, wherein the elastic material is provided between outer peripheral edges of the steel plates. A filling space surrounded by the sealing material is formed between the steel plates, and the filling space is filled with the viscoelastic material.

According to a second aspect of the present invention, in the first aspect of the invention, the viscoelastic material exhibits a fluid state at room temperature when injected and filled in the filling space, and maintains the fluidized state or solidifies after the filling and filling. It is made of a material to be used.

According to a third aspect of the present invention, in the first aspect of the present invention, the viscoelastic material is heated and melted to be in a fluid state when injected and filled in the filling space, and maintains a fluid state after the filling and filling. Alternatively, it is made of a solidifying material.

According to a fourth aspect of the present invention, in the second or third aspect, a synthetic resin such as synthetic rubber, acrylic resin, silicone, or asphalt is used as the viscoelastic material.

In a fifth aspect of the present invention, in the first, second, third or fourth aspect of the present invention, silicone rubber is used as the sealing material.

The invention according to claim 6 is based on claims 1, 2, 3, 4
Alternatively, in the invention according to the fifth aspect, a fire-resistant sealing material for protecting the sealing material is attached outside the sealing material.

[0010] The invention of claim 7 is a method for manufacturing a viscoelastic wall comprising a plurality of steel plates laminated with a viscoelastic material interposed therebetween, wherein the rope is formed of an elastic material between outer peripheral edges of the steel plates. A filling space surrounded by the sealing material is formed between the steel plates by interposing a sealing material in a shape of a circle, and the filling space is filled with the viscoelastic material.

According to an eighth aspect of the present invention, in the seventh aspect, a viscoelastic material exhibiting a fluid state at normal temperature is injected and filled into the filling space at normal temperature.

According to a ninth aspect of the present invention, in the invention of the seventh aspect, the viscoelastic material which exhibits a fluid state by being heated and melted is melted by heating and injected into the filling space.

According to a tenth aspect of the present invention, in the invention of the seventh, eighth or ninth aspect, one inner steel sheet is laminated between two outer steel sheets, and the outer steel sheet is disposed between the outer peripheral edges of the inner steel sheet and the outer steel sheet. Alternatively, the filling space is formed by interposing the sealing material between the outer peripheral portions of the outer steel plate, and the outer peripheral edges of the outer steel plate are bolted to each other outside the sealing material, and the filling is performed. The space is filled with the viscoelastic material.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 7 show a manufacturing method of the present embodiment in the order of steps, and FIG. 8 shows a main part of a viscoelastic wall manufactured by the manufacturing method.
This viscoelastic wall has a configuration in which two outer steel plates 3a and one inner steel plate 3b are laminated and a viscoelastic material 4 is interposed therebetween as in the case shown in FIG. However, in this embodiment, asphalt is used as the viscoelastic material 4, and the asphalt is heated and melted (hot melt) to form the outer steel plate 3a and the inner steel plate 3.
It is characterized in that the space between these outer peripheral edges is sealed with a sealing material 5 so as to be injected and filled between the holes b.

In order to manufacture this viscoelastic wall, as shown in FIG. 1, an outer steel plate 3a having bolt holes 6 formed in advance on three outer peripheral edges other than the upper edge is used. First, the refractory sealing material 7 is adhered with a double-sided tape. Rock wool can be suitably used as the fireproof sealing material 7, and its thickness is preferably set to be about three times the interval t (see FIG. 8) to be secured between the outer steel plate 3a and the inner steel plate 3b.

Next, as shown in FIG. 2, the sealing material 5 for forming a space for filling the viscoelastic material 4 is attached inside the fireproof sealing material 7. The sealing material 5 needs to be an elastic material having heat resistance, and a silicone rubber material is optimal. The cross-sectional shape of the sealing material 5 is a solid circle, the diameter of which is about 1.2 times the above-mentioned interval t, and a long one is bent and attached to three sides without any break.

Then, as shown in FIG. 3, the inner steel plate 3b is overlaid on the outer steel plate 3a. At this time, the outer peripheral edge of the inner steel plate 3b is aligned with the positions of the above-described refractory seal material 7 and the seal material 5, and the refractory seal material 7 and the seal material 5 are compressed and between the outer steel plate 3a and the inner steel plate 3b. Insert and interpose. At this time, washers as spacers 8 are attached to both surfaces of the inner steel plate 3b at predetermined intervals in advance. The spacer 8 is for regulating the mutual interval between the outer steel plate 3a and the inner steel plate 3b. By setting the thickness to be equal to the above-mentioned interval t, the spacer 8 can be naturally adjusted between the two steel plates 3a and 3b. Distance t is ensured, and the refractory sealing material 7 and the sealing material 5
Is compressed appropriately.

As shown in FIG. 4, a refractory seal member 7 and a seal member 5 are attached to the outer peripheral edge of the inner steel plate 3b in the same manner as described above, and the outer steel plate 3a is further superimposed as shown in FIG. As shown, both outer steel plates 3a are fastened by bolts 9.

As described above, the sealing material 5 is provided on both sides of the inner steel plate 3b.
As shown in FIG. 7, the filling spaces are filled with asphalt as the viscoelastic material 4 which is heated to about 120 to 180 ° C. and melted as shown in FIG. The injected asphalt solidifies by natural or forced cooling, and the outer steel plate 3a and the inner steel plate 3b are bonded by the asphalt,
This completes the viscoelastic wall.

According to the above-described embodiment, asphalt filling space is formed by interposing the sealing material 5 between the outer steel plate 3a and the inner steel plate 3b. Viscoelastic wall can be easily and inexpensively manufactured. In particular, since the outer steel plates 3a are fastened to each other by the bolts 9, no welding work is required, and asphalt, which is frequently used as a construction material, is used as the viscoelastic material 4, so that material costs can be sufficiently reduced. It is easy to handle, does not require special and complicated equipment for melting or cooling it, and does not require maintenance or inspection after installing this viscoelastic wall in a building. Also, a spacer 8 is provided between the steel plates 3.
Interposed between them, that is, their viscoelastic material 4
Thickness can be appropriately secured.

Further, the viscoelastic wall manufactured as described above is
Since the heat-resistant silicone rubber having a heat-resistant temperature of about 200 ° C. is used as the sealing material 5 and the sealing material 5 is interposed between the steel plates 3 in a compressed state, a reliable sealing performance can be secured. There is no fear that the injected asphalt will leak out. In addition, since the sealing material 5 has a solid circular cross section, when the viscoelastic wall operates during an earthquake and the outer steel plate 3a and the inner steel plate 3b are relatively displaced, the sealing material 5 rolls following the relative displacement. There is no fear that the seal member 5 is deformed and is thus damaged by excessive force.

Further, in the event that a fire occurs in a building incorporating the viscoelastic wall, if the sealing material 5 is damaged, there is a concern that asphalt may ignite. By providing the fire-resistant sealing material 7 such as rock wool on the outside, such a situation can be reliably prevented.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various design changes and applications are possible, for example, as listed below.

The viscoelastic material 4 is not limited to asphalt, but may be any material such as a synthetic resin such as synthetic rubber, acrylic resin, silicone, or any other material capable of exhibiting damping performance. Further, the viscoelastic material 4 is not limited to a material that exhibits a fluidized state by being heated and melted as in the above asphalt, and may be a material that exhibits a fluidized state at room temperature, or of course, solidifies after injection and filling. Not limited to this, as long as it exhibits the damping performance, it may be one that maintains a fluid state as it is or a gel-like one.

When the viscoelastic material 4 is injected and filled in a heated and molten state, a silicone rubber having heat resistance is most suitable as the sealing material 5, but the sealing material 5 is a material capable of sealing the viscoelastic material. Heat resistance is not required unless the viscoelastic material is injected and filled in a heated and molten state. Further, the sealing material 5 is required to be an elastic material in order to ensure reliable sealing performance, and it is necessary to seal without a break. Not only a circular cross section but also a square cross section or a hollow cross section can be considered. Further, in the case where the viscoelastic material 4 having no fear of ignition is used, the fire-resistant sealing material 7 in the above embodiment is unnecessary, so that it may be omitted.

In the above embodiment, the spacer 8 is formed of the inner steel plate 3b.
The spacer 8 may of course be attached to the outer steel plate 3a. Further, in the process of the above embodiment, the refractory seal material 7 and the seal material 5 are sequentially attached to the outer steel plate 3a and the inner steel plate 3b.
Of course, they may be attached to the outer steel plate 3a in advance, or may be attached to both surfaces of the inner steel plate 3b.
Further, it is needless to say that the steel plate 3 does not need to be erected except for the step of filling and filling the viscoelastic material, and it is needless to say that the work can be performed in a horizontal state.

The viscoelastic wall of the above embodiment is composed of two outer steel plates 3
a and one inner steel plate 3b are laminated, and the outer steel plates 3a are bolted to each other. However, the number of laminated steel plates 3 may be two or four or more, and bolting is unnecessary. In such a case (for example, two steel plates 3), it may be omitted. Of course, the dimensions of the viscoelastic wall are also appropriate, but it is advantageous to set the width dimension to 2.4 m or less, since it can be transported by a normal truck.

In the above embodiment, the sealing material 5 is interposed between the inner steel plate 3b and the two outer steel plates 3a on both sides thereof, and the viscoelastic material is injected and filled on both sides of the inner steel plate. However, as shown in FIG. 9, the sealing material 5 is interposed between the outer peripheral edges of the two outer steel plates 3a, and the entire inside thereof is injected and filled with the viscoelastic material 4, whereby the viscoelastic material 4 is formed. Similar effects can be obtained even when the inner steel plate 3b is buried inside.

[0029]

In the viscoelastic wall according to the first aspect of the present invention, a filling space is formed by interposing a rope-shaped sealing material made of an elastic material between the outer peripheral edges of the steel plate, and the viscoelastic material is formed therein. Since it is manufactured by injection filling, it can be easily and inexpensively manufactured on an industrial scale.

The viscoelastic wall according to the second aspect of the present invention employs a material exhibiting a fluid state at room temperature as the viscoelastic material, so that the filling operation can be easily performed.

The viscoelastic wall according to the third aspect of the present invention employs a material that exhibits a fluid state by being heated and melted as a viscoelastic material. Can do.

The viscoelastic wall according to the fourth aspect of the present invention uses a synthetic resin such as synthetic rubber, acrylic resin, or silicone, or asphalt as the viscoelastic material. It is easy to handle and requires no maintenance.

The viscoelastic wall according to the fifth aspect of the present invention employs silicone rubber having excellent elasticity as a sealing material, so that the sealing performance can be ensured. In addition, since the silicone rubber has heat resistance, the viscoelastic material is heated and melted. It is most suitable when using what is filled by injection.

In the viscoelastic wall according to the sixth aspect of the present invention, since the fireproof sealing material is attached to the outside of the sealing material, it is possible to prevent the sealing material from being damaged even in the event of a fire. It is suitable for.

According to a seventh aspect of the present invention, a rope-shaped sealing material made of an elastic material is interposed between the outer peripheral edges of the steel sheets, and a filling space is formed between the steel sheets. Since the viscoelastic material exhibiting a state is injected and filled, the viscoelastic wall can be easily and inexpensively manufactured on an industrial scale.

In the manufacturing method according to the eighth aspect of the present invention, the viscoelastic material which exhibits a fluid state at normal temperature is injected and filled at room temperature, so that the injection and filling operation can be performed extremely easily.

In the manufacturing method according to the ninth aspect of the present invention, since the viscoelastic material is melted by heating and injected and filled in a fluid state, the injection and filling operation can be easily performed only by heating the viscoelastic material.

According to a tenth aspect of the present invention, one inner steel plate is laminated between two outer steel plates, and between the outer peripheral portions of the inner steel plate and the outer steel plate or between the outer peripheral edges of the outer steel plate. Since a sealing material is interposed between the outer steel plates and the outer peripheral edges of the outer steel plate are bolted together, welding work is unnecessary and workability is excellent.

[Brief description of the drawings]

FIG. 1 is a view showing a manufacturing method according to an embodiment of the present invention, and is a view showing a state in which a refractory sealing material is attached to an outer steel plate.

FIG. 2 is a diagram showing a state in which a sealing material is attached.

FIG. 3 is a view showing a state in which the inner steel plates are stacked.

FIG. 4 is a view showing a state in which a refractory seal material and a seal material are attached to the inner steel plate.

FIG. 5 is a diagram showing a state in which outer steel plates are overlapped.

FIG. 6 is a diagram showing a state in which outer steel plates are bolted together.

FIG. 7 is a diagram showing a state in which a viscoelastic material in a flowing state is injected and filled.

FIG. 8 is an enlarged sectional view of a main part of a viscoelastic wall according to an embodiment of the present invention.

FIG. 9 is an enlarged sectional view of a main part of a viscoelastic wall according to another embodiment of the present invention.

FIG. 10 is a diagram illustrating an example of a viscoelastic wall and an installation state thereof.

[Explanation of symbols]

 Reference Signs List 3 steel plate 3a outer steel plate 3b inner steel plate 4 asphalt (viscoelastic material) 5 sealing material 7 fire-resistant sealing material 8 spacer 9 bolt

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Junichi Higuchi 4-4-1-18 Nishitenma, Kita-ku, Osaka City, Osaka Inside Taiyo Packing Co., Ltd.

Claims (10)

[Claims] 1. A viscoelastic wall formed by laminating a plurality of steel plates with a viscoelastic material interposed therebetween, and a rope-shaped sealing material made of an elastic material is interposed between outer peripheral edges of the steel plates. A viscoelastic wall, wherein a filling space surrounded by the sealing material is formed between the steel plates, and the viscoelastic material is injected and filled in the filling space. 2. The material according to claim 1, wherein the viscoelastic material exhibits a fluid state at room temperature when injected and filled in the filling space, and maintains or flows after the injection and filling. The viscoelastic wall as described. 3. The viscoelastic material is made of a material which is heated and melted to be in a fluid state when injected and filled into the filling space, and which maintains or flows after the injection and filling. Item 4. A viscoelastic wall according to item 1. 4. The viscoelastic wall according to claim 2, wherein the viscoelastic material is a synthetic resin such as synthetic rubber, acrylic resin, silicone, or asphalt. 5. The viscoelastic wall according to claim 1, wherein said sealing material is made of silicone rubber. 6. The viscoelastic wall according to claim 1, wherein a fire-resistant sealing material for protecting the sealing material is attached outside the sealing material. 7. A method for producing a viscoelastic wall comprising a plurality of steel plates laminated with a viscoelastic material interposed therebetween, wherein a rope-shaped sealing material made of an elastic material is provided between outer peripheral edges of the steel plates. A method for manufacturing a viscoelastic wall, comprising: forming a filling space surrounded by the sealing material between the steel plates; and filling the filling space with the viscoelastic material. 8. The method for producing a viscoelastic wall according to claim 7, wherein a viscoelastic material which exhibits a fluid state at room temperature is injected and filled into the filling space at room temperature. 9. The method for producing a viscoelastic wall according to claim 7, wherein the viscoelastic material which exhibits a fluid state by being heated and melted is melted by heating and injected into the filling space. 10. An inner steel plate is laminated between two outer steel plates, and the sealing material is interposed between outer peripheral portions of the inner steel plate and the outer steel plate or between outer peripheral portions of the outer steel plate. Forming the filling space, and bolting outer peripheral edges of the outer steel plate to each other outside the sealing material, and filling and filling the filling space with the viscoelastic material. Item 10. The method for producing a viscoelastic wall according to item 7, 8, or 9.