JP3713651B2 - Installation method of seismic isolation device in existing building and installation device used therefor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of installing a seismic isolation device in an existing building that is suitable for use when installing a seismic isolation device such as a seismic isolation rubber in an existing building, and an installation device used therefor.
[0002]
[Prior art]
In recent years, various buildings such as buildings and condominiums have not only prevented damage and collapse of buildings due to earthquakes, but also prevented vibrations such as earthquakes and various traffic vibrations from being transmitted to buildings. Technologies such as seismic isolation and damping structures that can be enhanced are being adopted.
[0003]
As such a technique, a seismic isolation structure in which a seismic isolation device such as a laminated rubber is incorporated in a building is often used because it has sufficient performance but is relatively low in cost and easy to install. There is a tendency.
[0004]
[Problems to be solved by the invention]
By the way, the technologies described above are generally intended for new buildings, but we would like to improve the earthquake resistance of existing buildings such as old buildings that seem to have low earthquake resistance without having to be demolished and rebuilt. There is a request. Correspondingly, a reinforcement technique or the like is being developed to increase the frame strength by incorporating a reinforcement frame or the like into the building, thereby improving the earthquake resistance. In addition, it is possible to incorporate seismic isolation devices such as laminated rubber, which are frequently used in new buildings, into existing buildings, but it goes without saying that existing buildings originally have space for incorporating seismic isolation devices such as laminated rubber. Since it is not provided, a technique for easily and surely incorporating the seismic isolation device at a position where its performance can be sufficiently exhibited has been sought.
[0005]
The present invention has been made in consideration of the above points, and the seismic isolation device such as laminated rubber can be easily and surely incorporated into a position where the performance can be fully exhibited. It is an object to provide an apparatus installation method and an installation apparatus used therefor.
[0006]
[Means for Solving the Problems]
In the invention according to claim 1, the load of the existing building is supported by the provisional member, a space for installing the seismic isolation device is formed below the existing building, and a pressure platen is formed on the bottom surface of the space. after, the seismic isolation device to be installed, the held to lift installation apparatus having a universal a and elevating means moving in a pressure platen, the seismic isolation device by moving the該据with device by the breakdown voltage platen After positioning at a predetermined position, the held seismic isolation device is lowered by the elevating means, and then the installation device is removed, and further, the provisional isolation member is removed and the seismic isolation device is installed in an existing building. When using the installation device provided with a support portion including a fixing portion and an attaching / detaching portion that is detachable from the fixing portion, and holding the seismic isolation device by the installation device. The installation device with the detachable part removed After the approach to the seismic isolation device, the detachable portion is attached to the fixed portion. On the other hand, when removing the installation device, the detachable portion is removed from the fixed portion, and then the installation device is removed. It is characterized by being moved to the side of the seismic device .
[0007]
The invention according to claim 2 is an installation device that is used when installing the seismic isolation device at a predetermined position, and is provided with a carriage unit that can run on a pressure-resistant panel, and the seismic isolation device provided on the carriage unit. And a lifting mechanism for raising and lowering the supporting portion. The supporting portion is fixed to remove the installation device after the seismic isolation device is installed at a predetermined position. It can be divided into a part and an attaching / detaching part that is detachable from the fixing part .
[0008]
The invention according to claim 3 is the installation device of the seismic isolation device according to claim 2, wherein the installation device places the upper plate of the seismic isolation device on the support portion, thereby It is characterized by being configured to support.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of a method for installing a seismic isolation device in an existing building and an installation device used therefor according to the present invention will be described with reference to FIGS.
[0010]
FIG. 1 shows a state in which a seismic isolation device is installed on the foundation of an existing building. In this figure, symbol A is the foundation of the existing building, 1 is the footing constituting the foundation A, and 2 is formed below it. Concrete pressure platen 3 is a seismic isolation device.
[0011]
As shown in this figure, the seismic isolation device 3 is a so-called laminated rubber, and is provided with a seismic isolation part 6 between a lower plate 4 and an upper plate 5, and the seismic isolation part 6 includes rubber and a steel plate. It is the thing of the structure laminated | stacked alternately by the up-down direction. The seismic isolation portion 6 has a substantially circular shape in plan view, and the lower plate 4 and the upper plate 5 have a larger diameter than the seismic isolation portion 6.
[0012]
The seismic isolation device 3 is installed between a lower base 8 formed on the upper surface of the pressure-resistant panel 2 and an upper base 9 formed integrally on the lower surface of the footing 1, and the lower plate 4 and the upper plate 5. Are fixed to the lower base 8 and the upper base 9 by bolts or the like. As a result, when an earthquake or the like occurs and the ground-side pressure platen 2 and the existing building-side footing 1 above are relatively displaced in the horizontal direction, the seismic isolation device passes through the lower plate 4 and the upper plate 5. The relative displacement is attenuated by elastic deformation of the rubber of the seismic isolation portion 6.
[0013]
In order to install the seismic isolation device 3 in an existing building as described above, first, as shown in FIG. 2, after excavating the periphery of the footing 1 of the foundation A and reinforcing the foundation A as necessary, the ground below the ground A A steel pipe pile 12 or the like is driven inside. And this steel pipe pile 12 is made into the temporary support member 13 for receiving the load of the existing building, and after supporting the load of the existing building with these temporary support members 13, the ground below the footing 1 is further excavated, and space here 14 is formed. Subsequently, a reinforcing bar or the like is disposed on the bottom surface of the space 14 as necessary, and concrete is placed to form the pressure-resistant board 2 having a predetermined thickness.
[0014]
Thereafter, a lower base 8 for installing the seismic isolation device 3 is formed on the pressure platen 2 by reinforcing bars and placing concrete. The seismic isolation device 3 is installed between the lower base 8 and the upper footing 1, and an installation device 20 as shown below is used for this.
[0015]
As shown in FIG. 3 to FIG. 5, the installation device 20 is generally configured by a carriage unit 21, a support frame (support unit) 22, and an elevator jack (elevating means, elevator mechanism) 23.
[0016]
As shown in FIGS. 3 and 5, the carriage unit 21 is configured such that a plurality of wheels 25 are provided on a carriage frame 24 that is substantially U-shaped in plan view, whereby the carriage 21 can travel and move.
[0017]
As shown in FIGS. 3 to 5, the support frame 22 includes a fixing portion 26 and an attaching / detaching portion 27 that can be attached to and detached from the fixing portion 26, and the fixing frame portion 26 and the attaching / detaching frame portion. 27 is formed from a steel material having an I-type cross-sectional view.
[0018]
As shown in FIGS. 4 and 5, the fixing portion 26 includes a support member 26 a and side members 26 b and 26 b that extend orthogonally from both ends thereof, and is substantially the same as the carriage frame 24 in a plan view. It has a letter shape. At this time, the side members 26b and 26b of the fixing portion 26 are provided with a gap larger than the width of the lower base 8 (see FIG. 1). Note that reference numeral 28 in the drawing denotes a reinforcing material that is integrally attached to the fixing portion 26.
[0019]
As shown in FIGS. 3 and 4, the attaching / detaching portion 27 is configured to be detachably fixed to mounting brackets 29, 29 attached integrally to the fixing portion 26 with bolts or the like.
[0020]
As shown in FIG. 4, the support frame 22 composed of the fixing portion 26 and the detachable portion 27 is formed in a square shape in a plan view with the detachable portion 27 attached. As shown in FIGS. 4 and 5, in this state, the distance between the attaching / detaching portion 27 and the support member 26 a of the fixing portion 26 is smaller than the outer diameter of the upper plate 5 of the seismic isolation device 3 and is seismically isolated. It is set larger than the part 6.
[0021]
As shown in FIGS. 3 and 5, the elevating jack 23 is composed of, for example, the illustrated mechanical pantograph type jack, hydraulic jack, or the like, and includes a bogie frame 24 of the bogie portion 21, a fixing portion 26 of the support frame 22, and the like. A plurality are provided in between. The support frame 22 can be freely moved up and down by operating these lifting jacks 23.
[0022]
Each wheel 25 of the installation device 20 is provided so as to be able to travel at least in the direction in which the side members 26b, 26b of the fixing portion 26 of the support frame 22 extend, and can be changed in any direction. It is preferred that
[0023]
In order to install the seismic isolation device 3 with such an installation device 20, the seismic isolation device 3 manufactured in advance in a factory or the like is first mounted on the installation device 20. For this purpose, as shown in FIG. 6, with the detachable portion 27 (see FIG. 4) of the support frame 22 removed, the seismic isolation device 3 placed on the floor or on the table is brought close to the support member of the fixed portion 26. 26 a is inserted into the lower side of the upper plate 5 of the seismic isolation device 3. Subsequently, as shown in FIG. 7, the attaching / detaching portion 27 is attached to the mounting brackets 29, 29 of the fixing portion 26 with bolts or the like. Then, this attaching / detaching portion 27 also enters the lower side of the upper plate 5 of the seismic isolation device 3.
[0024]
Next, as shown in FIG. 2, when the lifting jack 23 is extended and the support frame 22 is raised, the upper plate 5 of the seismic isolation device 3 is placed on the upper surface of the support frame 22 and lifted. And the installation apparatus 20 which supported the seismic isolation apparatus 3 in this way is moved on the pressure | voltage resistant board 2, and this seismic isolation apparatus 3 is moved to the lower base 8 which should be installed. Then, in the vertical upper direction of the lower base 8, the position and direction of the seismic isolation device 3 are positioned (in order to match the position of the fixing bolt hole of the lower plate 4) and the seismic isolation device is supported by shrinking the lifting jack 23. 3 is lowered to the upper surface of the lower base 8. Further, the lower plate 4 of the seismic isolation device 3 is fixed to the lower base 8 with bolts or the like.
[0025]
Thereafter, as shown in FIG. 8, the attaching / detaching portion 27 of the support frame 22 is removed from the fixing portion 26. And the fixing | fixed part 26 used as a substantially U shape by this is moved to the side of the seismic isolation apparatus 3. FIG. Thereby, the installation device 20 is removed from the seismic isolation device 3 installed at a predetermined position.
[0026]
After that, as shown in FIG. 1, a reinforcing bar is assembled above the upper plate 5 of the seismic isolation device 3, a formwork (not shown) is further assembled, and concrete is cast and filled therein, thereby The base 9 is formed and integrated with the foundation A of the existing building. After the upper base 9 is hardened, the temporary receiving member 13 made of the steel pipe pile 12 or the like is removed and the seismic isolation device 3 receives the load of the existing building.
Thereby, installation to the existing building of the seismic isolation apparatus 3 is completed.
[0027]
Thus, the existing building in which the seismic isolation device 3 is installed has a configuration in which the seismic isolation device 3 is interposed between the foundation A on the existing building side and the pressure-resistant panel 2 on the ground side. As a result, when a relative displacement occurs between the foundation A and the pressure-resistant panel 2 due to an earthquake or vibration due to traffic, the rubber constituting the seismic isolation unit 6 of the seismic isolation device 3 is elastically deformed to attenuate the relative displacement. It has come to be.
[0028]
In the above-described method of installing the seismic isolation device 3 in the existing building, the load of the existing building is supported by the provisional receiving member 13, and after forming the space 14 below, the seismic isolation device 3 is lifted and held by the installation device 20. Then, after the seismic isolation device 3 is positioned at a predetermined position by moving the installation device 20, the seismic isolation device 3 is lowered onto the lower base 8 by the lifting jack 23 of the installation device 20. Further, after the seismic isolation device 3 is installed, the installation device 20 is removed, after which the temporary receiving member 13 is removed, and the load on the existing building is received by the seismic isolation device 3. As a result, the seismic isolation device 3 can be incorporated into the existing building, and this existing building can be made as a seismic isolation structure and has high seismic resistance, and it is also possible to obtain high comfort for traffic vibrations and the like. Become. In addition, since it is not necessary to provide a member such as a reinforcing material in the room of the existing building, it is possible to avoid the appearance of the building and the indoor atmosphere from being destroyed or the indoor space from being narrowed.
[0029]
The above-described installation device 20 includes a carriage unit 21 that can run on the pressure platen 2, a support frame 22 that supports the seismic isolation device 3, and a lifting jack 23 that lifts and lowers the support frame 22. It has become. As a result, the above installation method can be realized, and the installation operation can be performed easily and reliably.
[0030]
In addition, the base isolation device 3 is supported by placing the upper plate 5 of the base isolation device 3 on the upper surface of the support frame 22. Further, the support frame 22 can be divided into a fixing portion 26 and a detachable portion 27. Thereby, when supporting the seismic isolation device 3 and disassembling, the installation device 20 does not protrude above the seismic isolation device 3. Therefore, such an installation apparatus 20 can suppress the height, and can reliably perform the work even in the space 14 having a low height.
[0031]
In addition, in the said embodiment, about the existing building which installs the seismic isolation apparatus 3, the form of the foundation A, the form of a building main body, etc. are not ask | required at all. Further, the position where the seismic isolation device 3 is incorporated is also configured to be incorporated below the foundation A in the above embodiment, but may be any other position as long as an effective seismic isolation effect can be obtained.
Furthermore, any structure or material may be employed for the seismic isolation device 3 to be incorporated, and other devices such as a steel damper other than laminated rubber may be used.
[0032]
Moreover, in the said embodiment, although it has the structure which can divide the support frame 22 of the installation apparatus 20 into the substantially U-shaped fixing | fixed part 26 and the detachable attaching / detaching part 27, the attaching / detaching part 27 is provided. There is no question about the method of detachably joining. Further, for example, the support frame 22 may be configured by combining substantially L-shaped or substantially U-shaped members so as to be divided into two parts.
[0033]
Furthermore, as the lifting jack 23, a hydraulic jack or a pantograph jack has been taken as an example, but the number of installed jacks is not limited at all. Of course, a mechanism other than the lifting jack 23 may be employed as long as the support frame 22 can be lifted and lowered.
[0034]
Other than this, as long as it does not deviate from the gist of the present invention, any configuration may be adopted, and it is needless to say that the above-described configurations may be appropriately combined.
[0035]
【The invention's effect】
As described above, according to the method for installing a seismic isolation device in an existing building according to claim 1, the load of the existing building is supported by the provisional receiving member, a space is formed below, and the bottom surface of the space is formed. After forming the pressure platen , lift and hold the seismic isolation device with the installation device , move the installation device on the pressure plate and position the seismic isolation device, then lift means equipped with the seismic isolation device in the installation device Then, the installation device is removed, and the temporary receiving member is removed . The installation device is equipped with a support part consisting of a fixed part and a detachable part, and the seismic isolation device is installed. When holding with the device, move the installation device close to the seismic isolation device with the attachment / detachment part removed, and then attach the attachment / detachment portion to the fixing portion, while fixing the attachment / detachment portion when removing the installation device after removal from the parts, to move the mounting device on the side of the isolator And it has a formation. As a result, the seismic isolation device can be incorporated into the existing building, and the existing building can be used as a seismic isolation structure to have high seismic resistance and high comfort for traffic vibrations. Moreover, the indoor / outdoor atmosphere is not broken or the room is not narrowed.
[0036]
The seismic isolation device installation device according to claim 2 includes a carriage unit that can run on the pressure platen, a support unit that supports the seismic isolation device, and a lifting mechanism that lifts and lowers the support unit. In order to remove the installation device after installing the seismic device, the support portion can be divided into a fixed portion and a detachable portion . Thus, the seismic isolation device can be used as an installation device of the method for installing the seismic isolation device in the existing building according to claim 1, and the seismic isolation device can be easily and even installed in a space with a limited height formed under the existing building. It can be installed reliably.
[0037]
According to the installation device for the seismic isolation device of the third aspect, the seismic isolation device is supported by placing the upper plate of the seismic isolation device on the support portion. Thereby, the height of the installation device can be suppressed, and the installation work can be performed even if the height of the space in which the seismic isolation device is installed is limited.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of a method for installing a seismic isolation device in an existing building according to the present invention and an example of an installation device used therefor, and is an elevation view showing a state where the seismic isolation device is set at a predetermined position. .
FIG. 2 is a side view showing a state in which the seismic isolation device is installed using an installation device.
FIG. 3 is an elevational view showing the installation apparatus.
FIG. 4 is a plan view showing the installation apparatus.
FIG. 5 is a side view showing the installation apparatus.
FIG. 6 is a plan view showing a method of lifting the seismic isolation device with the installation device.
FIG. 7 is a plan view showing a state where the seismic isolation device is held by the installation device.
FIG. 8 is a plan view showing a state in which the installation device is removed after installing the seismic isolation device.
[Explanation of symbols]
3 Seismic isolation device 5 Upper plate 13 Temporary receiving member 14 Space 20 Installation device 21 Carriage part 22 Support frame (support part)
23 Elevating jack (elevating means, elevating mechanism)

Claims (3)

After supporting the load of the existing building with a provisional member, forming a space for installing a seismic isolation device below the existing building, and forming a pressure plate on the bottom of the space,
The installation to be the seismic isolation device, the held to lift installation apparatus having a universal a and elevating means moving in a pressure platen, determined the seismic isolation device by moving the該据with device by the breakdown voltage platen After the positioning, the held seismic isolation device is lowered by the lifting means,
After that, it is a method of installing the seismic isolation device in the existing building that removes the installation device and further removes the temporary receiving member ,
As the installation device, use a device provided with a support portion composed of a fixed portion and a detachable portion that is detachable from the fixed portion,
When the seismic isolation device is held by the installation device, after the installation device is brought close to the seismic isolation device with the detachable portion removed, the detachable portion is attached to the fixed portion,
On the other hand, when removing the installation device, the detaching part is removed from the fixed part, and then the installation device is moved to the side of the seismic isolation device. Installation method. An installation device used when installing the seismic isolation device at a predetermined position,
A carriage unit that can run on the pressure platen, a support unit that is provided on the carriage unit and supports the seismic isolation device, and an elevating mechanism for raising and lowering the support unit,
The support portion can be divided into a fixing portion and an attaching / detaching portion that is detachable from the fixing portion in order to remove the installation device after the seismic isolation device is installed at a predetermined position. This is a seismic isolation device installation device.   3. The seismic isolation device installation device according to claim 2, wherein the installation device is configured to support the seismic isolation device by placing an upper plate of the seismic isolation device on the support portion. An installation device for seismic isolation devices.

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