JP2000084955A - Method and apparatus for producing viscoelastic wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an effective method for producing a viscoelastic wall in an industrial scale and an apparatus for the method. SOLUTION: While an assembly A in which steel plates are laid to overlap each other through a spacer and an injection port is opened to the upper part is being held standing, a viscoelastic material having flowability is injected/ packed from the injection port into the gaps between the steel plates so that the steel plates are adhered to each other with the viscoelastic material. A thermoplastic material such as asphalt is used as the viscoelastic material and heat-melted to be injected/packed. End opening processing is applied to steel plate upper end parts facing the injection port. A holding mechanism 24 for holding the assembly standing and an injection device 22 for injecting/packing the viscoelastic material are provided. The device 22 is equipped with a nozzle 22a to be set in the injection port and a pump 22c for sending the viscoelastic material. A heat-melting device 21 for heat-melting the thermoplastic material such as asphalt is provided. A housing container 23 for the assembly is provided, and the holding mechanism is composed of a pair of pushers 24b. A preheater 25 for preheating the assembly is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a viscoelastic wall installed in a building as a vibration damper.

[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. 5, 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 two steel plates 3a and 3b are relatively displaced in the plane, and the vibration energy is absorbed by the viscous resistance force of the viscoelastic material 4 generated at that time. To attenuate the vibration of the building.

[0003]

By the way, the technology for manufacturing the above-mentioned viscoelastic wall on an industrial scale has not been established yet. For example, asphalt is used as the viscoelastic material 4 and the viscoelastic material 4 is formed into a sheet. However, the production cost is extremely high, which is not practical, and it is urgently necessary to develop an effective and appropriate production method and production equipment. I was

[0004]

In view of the above circumstances, a method for manufacturing a viscoelastic wall according to the present invention is a method for manufacturing a viscoelastic wall having a configuration in which a viscoelastic material is sandwiched between steel plates. The steel plate is interposed with a spacer interposed therebetween to seal the three sides except for the upper portion, thereby forming an assembly having an inlet opening at the upper portion, and holding the assembly in an upright state. A fluid viscoelastic material is injected and filled between the steel plates from the inlet, and the viscoelastic materials adhere the steel plates. It is preferable that a thermoplastic material is used as the viscoelastic material, the viscoelastic material is heated and melted and injected and filled between steel plates. In that case, it is most preferable to use asphalt as the viscoelastic material. . In addition, it is conceivable that a groove beveling is applied to the upper end of the steel plate facing the injection port.

A viscoelastic wall manufacturing apparatus according to the present invention is an apparatus for manufacturing a viscoelastic wall having a structure in which a viscoelastic material is sandwiched between steel plates. For an assembly having an inlet at the top by sealing the three sides except the upper part by superimposing, a holding mechanism for holding the assembly in an upright state, and having fluidity between the steel plate from the inlet. An injection device for injecting and filling a viscoelastic material is provided, the injection device includes a nozzle attached to the injection port,
A pump for pumping the viscoelastic material to the nozzle. It is preferable to provide a heating and melting device for heating and melting the viscoelastic material using a thermoplastic material as the viscoelastic material. Further, it is preferable that a storage container for the assembly be provided, and the holding mechanism be configured to hold the assembly in the storage container.
The holding mechanism is optimally constituted by a pair of pushers that penetrate the side wall of the storage container and press and hold the assembly by the tip thereof. It is conceivable to provide a preheating device for preheating the assembly.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the manufacturing method and the manufacturing apparatus according to the present invention will be described below with reference to the drawings. The method and apparatus according to the present embodiment firstly uses an assembly A as shown in FIG.
The assembly A is injected and filled with the viscoelastic material 4 by the manufacturing apparatus B shown in FIGS.
As shown in FIG. 5, a viscoelastic wall having a configuration in which steel plates 3 are bonded together by a viscoelastic material 4 is manufactured.

[0007] The assembly A is composed of two outer steel plates 3a and one inner steel plate 3b which are overlapped with each other through a washer 5 as a spacer in a state where a gap of a predetermined size is ensured. A peripheral member 6 is interposed between two outer steel plates 3a at the peripheral portion, and temporarily fastened with bolts 7, and further, the inner steel plate 3b is positioned by bolts 8 through which the three steel plates 3 are inserted. It is assembled in a form in which an inlet 9 is opened at the top. The washer 5 may be made of metal or resin, and may be fixed to the outer steel plate 3a or the inner steel plate 3b by welding or bonding in advance. The edge material 6 is made of a steel material sandwiched between the outer steel plates 3a, and the edge material 6a interposed on both sides is formed in a strip shape.
b has an inverted T-shaped cross section having a lower flange as a part for securing independence during manufacturing and as a fixture for a building.

A seal member 10 is provided on the outer peripheral edge of the inner steel plate 3b except for the upper part, and the seal member 10 is provided on three sides.
Seals the gap between the inner steel plate 3b and the outer steel plate 3a, and the viscoelastic material injected and filled inside the seal material 10
So that it does not leak outside. Further, the secondary seal material 11 is attached so as to close the gap between the outer steel plate 3a and the edge material 6, and even if the viscoelastic material leaks out of the seal material 10, the assembly A It is designed to prevent leakage to the outside. As described later, since a high-temperature material such as liquid asphalt is used as the viscoelastic material, a material having heat resistance such as rock wool or heat-resistant putty is used as the seal material 10 and the secondary seal material 11, for example.

Incidentally, reference numeral 24b shown by a chain line in FIG.
Is a pusher provided in a manufacturing apparatus B to be described later for holding and holding the assembly A at the position of the washer 5. Also,
Reference numeral 22a denotes a nozzle for injecting asphalt 30 which is a viscoelastic material from the injection port 9. At the upper end portion 12 of the outer steel plate 3a facing the injection port 9, mounting of the nozzle 22a and injection of the viscoelastic material are performed. Groove processing is performed diagonally to facilitate the processing (see FIG. 3).

The dimensions of each part of the assembly A are appropriate. For example, the thickness of the inner steel plate 3b is
It is preferable that the thickness of a is 9 mm and the gap between the inner steel plate 3b and the outer steel plate 3a (that is, the thickness of the viscoelastic material injected and filled therein) is 5 to 6 mm.

A manufacturing apparatus B shown in FIGS. 1 to 3 is intended to fill the assembly A with a viscoelastic material. Apparatus B of the present embodiment uses asphalt 30 as a viscoelastic material, heats and melts solid asphalt and injects it as high-temperature liquid asphalt, and includes a heating and melting device 21 and an injecting device 22 for that purpose. Further, a storage container 23 for storing the assembly A, a holding mechanism 24 provided in the storage container 23 for holding the assembly A in the storage container 23, and a preheating device for preheating the assembly A in the storage container 23 25. Reference numeral 26 is a base,
27 is a control panel.

The above-mentioned heating and melting apparatus 21 has a cylindrical melting tank 21a with a lid and a heater 21b provided at the bottom thereof. The solid asphalt supplied into the melting tank 21a from the drum 29 by a simple crane 28 is used. 30 is heated and melted by the heater 21b,
Liquid asphalt.

The injection device 22 includes a nozzle 22a mounted on the injection port 9 of the assembly A, and a pump 22c for feeding liquid asphalt in the melting tank 21a through the hose 22b to the nozzle 22a. A heat-resistant hose can be used as the hose 22b, and a gear pump having heat resistance can be suitably used as the pump 22c. As shown in FIG. 3, the nozzle 22a has a horizontally elongated slit-shaped outlet at its lower part, and the nozzle 22a is moved in the width direction of the assembly A with the outlet being inserted into the inlet 9 of the assembly A. The liquid asphalt 30, that is, the viscoelastic material is injected into the entire gap between the outer steel plate 3a and the inner steel plate 3b. The liquid asphalt 30 injected into the assembly A is naturally cooled and solidified with the passage of time, firmly bonds the outer steel plate 3a and the inner steel plate 3b, and exerts a vibration damping effect by its own viscous resistance. .

The storage container 23 is a box having a lid and a heat insulating property. The holding mechanism 24 provided on the storage container 23 penetrates both side walls of the storage container 23 and is advanced by a handle 24a. It consists of four to eight pushers 24b which are made possible.
By pressing the assembly A at the position of the washer 5 with the tip end of the b and holding the assembly A from both sides, the assembly A is held upright in the storage container 23.

The preheating device 25 includes a blower 25a having heat resistance and a heater 25c incorporated in a duct 25b.
After storing the assembly A in the storage container 23, prior to injecting and filling the liquid asphalt 30, the air in the storage container 23 is circulated through the duct 25b while being heated by the heater 25c. The temperature of the inside of the container 23 is raised to preheat the assembly A housed therein.

According to the manufacturing apparatus B having the above configuration, the assembly A
A series of operations such as holding, preheating, heating and melting of asphalt as a viscoelastic material, and injecting the same can be performed efficiently, and viscoelastic walls can be manufactured at low cost on an industrial scale. . In particular, since asphalt, which is not a special material, is used as the viscoelastic material and is heated and melted from a solid state and injected as a liquid, for example, the asphalt is formed in a sheet shape in advance and the steel sheet 3 is formed. As compared with the method of sandwiching the viscoelastic wall, the manufacturing time is greatly simplified, and the cost of the viscoelastic wall can be significantly reduced.

Since liquid asphalt is flammable, safety measures are indispensable.
Since the assembly A into which the liquid asphalt 30 is injected has no openings or holes except for the injection port 9 and is double-sealed by the sealing materials 10 and 11, the liquid asphalt 30 injected into the assembly A There is no fear of leaking out of the assembly A, and since the injection is performed while the assembly A is stored in the storage container 23, the liquid asphalt 30 remains in the storage container 23 even if it leaks out of the assembly A. Only by itself, leakage to the outside is prevented and safety can be sufficiently ensured.

In addition, when the temperature of each part of the assembly A is uneven at the time of injection, there is a concern that the solidification speed of the liquid asphalt 30 and the adhesive strength to the steel plate 3 may be uneven.
By raising the temperature inside the storage container 23 with the preheating device 25 in a sealed state, the entire assembly A stored in the storage container 23 can be quickly preheated to a uniform temperature.

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

In the method and apparatus of the above embodiment, asphalt is used as the viscoelastic material, but it can be injected into the assembly A in a fluid state, and the steel plates 3 are adhered to each other by viscous resistance. Other materials can be used as long as they can exert a vibration damping effect, and the materials are not limited to thermoplastic materials.

In the above embodiment, the assembly A is composed of three steel plates 3. However, the assembly A can be applied to a structure in which four or more steel plates 3 are superimposed without any problem. It can also be applied to those made of steel plates. Further, the assembly A may be any as long as a gap between the steel plates 3 can be secured by an appropriate spacer and three sides except for the injection port 9 can be sealed to seal the leakage of the viscoelastic material. It is also possible to omit the temporary fastening by the secondary seal material 11, the edge material 6, and the bolt 7 in the above embodiment.

The heating and melting device 21, the injection device 22, the storage container 23, and the holding mechanism 2 in the manufacturing apparatus B of the above embodiment.
4. The configuration of the preheating device 25 can be freely changed, and the heating and melting device 21, the storage container 23, and the preheating device 25 can be omitted depending on the type and properties of the viscoelastic material, the form of the assembly, and the like. . Further, the cooling device for forcibly cooling the assembly A after injecting and filling the liquid asphalt 30 into the manufacturing apparatus B of the above-described embodiment to promote its individualization, and the vibration of the assembly A when the liquid asphalt 30 is injected and filled. It is also conceivable to provide a vibration mechanism that promotes the injection by giving the pressure.

[0023]

As described above, according to the manufacturing method of the present invention, the steel plates are stacked with spacers interposed therebetween, and the assembly having the injection port opened at the top is held in an upright state. Since the viscoelastic material having fluidity is injected and filled between the steel plate from the inlet and the steel plates are bonded by the viscoelastic material, the viscoelastic wall is efficiently manufactured on an industrial scale and therefore inexpensively. Can be. In particular, by using a thermoplastic material as the viscoelastic material, heating and melting it, and filling it by injection, the viscoelastic material can be injected without any trouble, and the solidification can naturally secure the adhesive force. If asphalt is used as the material, it is inexpensive and easy to handle, so it is advantageous in terms of cost. In addition, there is an advantage that the viscoelastic material can be easily injected even when the gap between the steel plates is narrow by forming a groove on the upper end portion of the steel plate facing the injection port.

The manufacturing apparatus of the present invention includes a holding mechanism for holding the assembly in an upright state, and an injection device for injecting and filling a fluid viscoelastic material between the injection port and the steel plate. Since it is configured to have a nozzle mounted on the injection port and a pump for pumping the viscoelastic material to the nozzle, the viscoelastic material can be easily and reliably injected between the steel plates. It is the best to implement. In particular, if a heating and melting device for heating and melting the viscoelastic material using a thermoplastic material as the viscoelastic material is provided, the heating and melting of the viscoelastic material can be continuously and efficiently performed. Further, if the storage container of the assembly is provided and the assembly is held in the storage container by the holding mechanism, the leakage of the viscoelastic material can be prevented. By using a pusher, the configuration of the holding mechanism can be simplified. Further, if a preheating device for preheating the assembly is provided, there is an advantage that the adhesive strength of the viscoelastic material can be sufficiently secured by preheating the entire assembly to a uniform temperature prior to the injection of the viscoelastic material.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a schematic configuration of a manufacturing apparatus according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged view of the same nozzle.

FIG. 4 is a view showing an assembly for injecting a viscoelastic material by the same device.

FIG. 5 is a diagram illustrating an example of a viscoelastic wall.

[Explanation of symbols]

 Reference Signs List A assembly B manufacturing apparatus 3 steel plate 3a outer steel plate 3b inner steel plate 5 washer (spacer) 9 injection port 10 sealing material 21 heating / melting device 22 injection device 22a nozzle 22c pump 23 storage container 24 holding mechanism 24b pusher 25 preheating device 30 asphalt ( Viscoelastic material)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F100 AB03A AB03B AB03D AM00C AM00E AR00C AR00E BA03 BA05 BA06 BA10A BA10B BA10D JB16C JB16E JH02C JH02E JK07C JK07E 4F204 AA02 AE07 AH46 EA03 EA05 EB01

Claims (9)

[Claims] 1. A method for manufacturing a viscoelastic wall having a configuration in which a viscoelastic material is sandwiched between steel plates, wherein the steel plates are overlapped with a spacer interposed therebetween to seal three sides except an upper portion. By forming an assembly having an inlet opening at the top by this, holding the assembly in an upright state, in this state, filling and filling a viscoelastic material having fluidity between the steel plate from the inlet, A method for manufacturing a viscoelastic wall, wherein steel plates are bonded to each other by the viscoelastic material. 2. The method for producing a viscoelastic wall according to claim 1, wherein a thermoplastic material is used as the viscoelastic material, and the viscoelastic material is heated and melted and injected and filled between steel plates. 3. The method according to claim 2, wherein asphalt is used as the viscoelastic material. 4. The method for producing a viscoelastic wall according to claim 1, wherein a groove is formed on an upper end of the steel plate facing the injection port. 5. An apparatus for manufacturing a viscoelastic wall having a configuration in which a viscoelastic material is sandwiched between steel plates, wherein the steel plates are overlapped with a spacer interposed therebetween to seal three sides except for an upper portion. The assembly includes a holding mechanism for holding the assembly in an upright state, and an injection device for injecting and filling a fluid viscoelastic material between the steel plate and the steel plate from the injection port. The injection device includes a nozzle attached to the injection port, and a pump for pumping the viscoelastic material to the nozzle. 6. The viscoelastic wall manufacturing apparatus according to claim 5, further comprising a heating and melting device for heating and melting the viscoelastic material using a thermoplastic material as the viscoelastic material. 7. The viscoelastic material according to claim 5, further comprising a storage container of the assembly, wherein the holding mechanism is configured to hold the assembly in the storage container. Manufacturing equipment. 8. The viscous body according to claim 7, wherein said holding mechanism is constituted by a pair of pushers which penetrate a side wall of said storage container and press and hold said assembly by a tip portion thereof. Elastic wall manufacturing equipment. 9. The apparatus for manufacturing a viscoelastic wall according to claim 6, further comprising a preheating device for preheating the assembly.