JP6745207B2 - Seismic isolation device replacement structure - Google Patents

Description

The present invention relates to a seismic isolation device replacement structure for exchanging a seismic isolation device that seismically supports an upper structure on a lower structure.

In a seismic isolated building, as a method of exchanging the seismic isolation device for seismically supporting the upper structure on the lower structure, place a jack between the lower structure and the upper structure, and use this jack to move the upper structure. There is a method to replace the seismic isolation device with the jack up.

For example, in Patent Document 1, a jack-up device is connected between a column supported by a seismic isolation device, which constitutes the column and the upper structure, and a stainless plate installed on the upper surface of the lower structure. Is disclosed, and a method of replacing the seismic isolation device is disclosed in which the upper structure is jacked up by the jackup device and the seismic isolation device is replaced.

In this seismic isolation device replacement method, the lower end of the jack-up device is slidably supported on the upper surface of the stainless steel plate, so that the upper structure can be seismically supported even during the seismic isolation device replacement work. You can

However, in order to replace the seismic isolation device, the jack-up device and the stainless steel plate are arranged at a position apart from the seismic isolation device, so that the construction range for the seismic isolation device replacement work becomes wide.

JP, 2008-163636, A

In consideration of the facts, the present invention has an object to enable replacement work of a seismic isolation device in a small construction range.

In the invention of the first aspect, the upper support portion provided on the lower surface of the upper structure, the lower support portion provided on the upper surface of the lower structure, and the support member attached to the upper support portion or the lower support portion. A slide plate that is attached to the lower support part or the upper support part and slidably supports the support member or is slidably supported by the support member; and the upper support part or the lower support part A seismic isolation device replacement structure comprising: a mounting portion that is provided around a support member and that is slidably supported by the sliding plate or a jack that slidably supports the sliding plate is mounted.

In the invention of the first aspect, since the jack is attached around the bearing member of the upper support portion or the lower support portion so as to be slidably supported by the sliding plate or to slidably support the sliding plate, the upper structure can be mounted by this jack. Even if an earthquake occurs during the work of jacking up and exchanging the support members and sliding plates that form the seismic isolation device, the upper structure can be seismically supported on the lower structure.

Further, the sliding plate that constitutes the seismic isolation device can be used as the sliding plate of the jack.

Further, by attaching a jack to the mounting portion so as to be slidably supported by the sliding plate or slidingly supporting the sliding plate, the construction range of the sliding plate can be changed by replacing the bearing member and the sliding plate constituting the seismic isolation device. It can be compact within the range. That is, it is possible to replace the seismic isolation device (bearing member or sliding plate) in a small construction range.

In a second aspect of the invention, in the seismic isolation device replacement structure of the first aspect, the support member is configured to have a laminated rubber.

According to the second aspect of the invention, in the seismic isolation device in which the support member has the laminated rubber, even when an earthquake occurs during the work of replacing the seismic isolation device (support member or sliding plate), The upper structure can be seismically supported on the lower structure.

A third aspect of the invention is the seismic isolation device replacement structure according to the first or second aspect, wherein the sliding plate is separable.

According to the third aspect of the invention, even when an earthquake occurs during the work of replacing the sliding plate constituting the seismic isolation device, the upper structure can be seismically supported on the lower structure.

Since the present invention has the above configuration, it is possible to replace the seismic isolation device within a small construction range.

1(a), 1(b), 1(c) and 1(d) are front views showing a seismic isolation device replacement method according to an embodiment of the present invention. It is an AA sectional view of Drawing 1 (b). It is a front view which shows the conventional seismic isolation apparatus exchange structure. 4(a), FIG. 4(b), FIG. 4(c), FIG. 4(d), FIG. 4(e), FIG. 4(f), FIG. 4(g) and FIG. It is a front view showing the variation of the seismic isolation device exchange method concerning an embodiment of the invention. 5A is a sectional view taken along line BB of FIG. 4A, FIG. 5B is a sectional view taken along line CC of FIG. 4B, and FIG. 4C is a sectional view taken along line D-D of FIG. 4C, FIG. 5D is a sectional view taken along line E-E of FIG. 4D, and FIG. 5(f) is a sectional view taken along line GG of FIG. 4(f), FIG. 5(g) is a sectional view taken along line HH of FIG. 4(g), and FIG. 4H is a sectional view taken along line I-I of FIG. It is a top view which shows the variation of arrangement|positioning of the jack which concerns on embodiment of this invention. It is a top view which shows the variation of arrangement|positioning of the jack which concerns on embodiment of this invention. 8(a), 8(b), 8(c) and 8(d) are front views showing variations of the seismic isolation device replacement method according to the embodiment of the present invention. 9(a) and 9(b) are front views showing variations of the seismic isolation device replacement method according to the embodiment of the present invention. It is a front view which shows the variation of the jack which concerns on embodiment of this invention.

An embodiment of the present invention will be described with reference to the drawings. First, a seismic isolation device replacement structure according to an embodiment of the present invention will be described.

As shown in the front view of FIG. 1A, the seismic isolation device replacement structure 10 includes an upper support portion 12, a lower support portion 14, a seismic isolation device 46, and mounting portions 20 and 22. It is configured. Further, the seismic isolation device 46 is configured to include the support member 16 and the sliding plate 18.

The upper support portion 12 is formed of reinforced concrete, and is provided integrally with the upper structure 26 on the lower surface of the reinforced concrete upper structure 26 that constitutes the building 24. On the lower surface of the upper support portion 12, a reinforcing member 28 made of a steel plate is provided integrally with the upper support portion 12.

The reinforcing member 28 acts on the upper support portion 12 from the hydraulic jack 40 when the upper structure 26 (upper support portion 12) is jacked up by the hydraulic jack 40 described later (see FIG. 1B ). It is provided to reinforce the upper support portion 12 so that the upper support portion 12 can bear the load applied thereto.

The lower support portion 14 is formed of reinforced concrete, and is provided integrally with the lower structure 30 on the upper surface of the reinforced concrete lower structure 30 that constitutes the building 24.

The support member 16 includes a laminated rubber 32 as a seismic isolation member and a sliding member 34. The sliding member 34 is made of a tetrafluoroethylene resin plate and is attached to the lower surface of the flange 36 of the laminated rubber 32. The support member 16 is attached to the upper support portion 12 via the reinforcing member 28 by fixing the flange 38 of the laminated rubber 32 to the lower surface of the reinforcing member 28 with a bolt (not shown).

The sliding plate 18 is made of a stainless plate and is attached to the upper surface of the lower support portion 14. The sliding plate 18 slidably supports the support member 16 via a sliding member 34. That is, the sliding support is configured by the sliding plate 18 and the sliding member 34.

As shown in the front view of FIG. 1B and the AA sectional view of FIG. 1B, the mounting portions 20 and 22 are provided on the lower surface of the reinforcing member 28 around the support member 16. Has been. By fixing the flange 42 of the hydraulic jack 40 as a jack to the mounting portions 20 and 22 with bolts (not shown), the hydraulic jack 40 is attached to the upper support portion 12 via the reinforcing member 28. A sliding member 44 made of a tetrafluoroethylene resin plate is attached to the lower surface of the hydraulic jack 40, whereby the hydraulic jack 40 is attached to the mounting portions 20 and 22 and the sliding member 44. It is slidably supported by the slide plate 18 via.

Next, an example of a seismic isolation device replacement method for exchanging the bearing member 16 of the seismic isolation device 46 with a new bearing member 48 by the seismic isolation device replacement structure 10 will be described.

First, as shown in FIG. 1A, a state in which the upper structure 26 (upper support part 12) is supported on the lower structure 30 (lower support part 14) by the supporting member 16 (the support member 16 is upper part). 1(b), the flange 42 of the hydraulic jack 40 is fixed to the mounting portions 20 and 22 provided on the reinforcing member 28 with bolts under the vertical load of the structure 26). The hydraulic jack 40 is attached to the attachment portions 20 and 22.

As shown in FIG. 2, the hydraulic jacks 40 are arranged symmetrically about the support member 16. That is, the two hydraulic jacks 40 are attached to the reinforcing member 28.

Next, the hydraulic jack 40 is extended to the extent that the height of the upper structure 26 (upper support portion 12) is not changed, and part of the vertical load of the upper structure 26 received by the support member 16 is applied to the hydraulic jack 40. Transfer.

Next, the bolt fixing the flange 38 of the laminated rubber 32 to the reinforcing member 28 is removed to bring the supporting member 16 into the reinforcing member 28 in a non-fixed state.

Next, as shown in the front view of FIG. 1C, the hydraulic jack 40 is extended to such an extent that the upper structure 26 (upper support portion 12) is slightly raised, and the upper structure that the support member 16 receives. The vertical load of 26 is completely transferred to the hydraulic jack 40.

Next, the sliding member 18 is pulled laterally to remove the support member 16.

Next, as shown in the front view of FIG. 1( d ), the slide plate 18 is horizontally pulled to slide a new (replacement) bearing member 48 having the laminated rubber 50 and the sliding member 52. It is arranged at a predetermined position on the plate 18.

Next, the hydraulic jack 40 is contracted to such an extent that the support member 48 slightly receives the vertical load of the upper structure 26 (upper support portion 12).

Next, the support member 48 is attached to the reinforcing member 28 by fixing the flange 54 of the laminated rubber 50 to the lower surface of the reinforcing member 28 with bolts (not shown). As a result, the seismic isolation device 56 including the support member 48 and the sliding plate 18 is configured.

Next, the hydraulic jack 40 is contracted to jack down the upper structure 26 (upper support portion 12), and the vertical load of the upper structure 26 received by the hydraulic jack 40 is completely transferred to the support member 48.

Next, the bolts fixing the flange 42 of the hydraulic jack 40 to the mounting portions 20 and 22 provided on the reinforcing member 28 are removed, and the hydraulic jack 40 is removed from below the upper support 12 (reinforcing member 28). As a result, the work of replacing the bearing member 16 constituting the seismic isolation device 46 with a new bearing member 48 is completed.

Next, the operation and effect of the seismic isolation device replacement structure according to the embodiment of the present invention will be described.

In the seismic isolation device replacement structure 10 of the present embodiment, as shown in FIG. 1B, a hydraulic jack 40 is attached around the support member 16 on the lower surface of the reinforcing member 28 so as to be slidably supported by the sliding plate 18. Therefore, the upper structure 26 (upper support portion 12) is jacked up by the hydraulic jack 40, and an earthquake occurs during the work of replacing the support member 16 (laminated rubber 32, sliding member 34) that constitutes the seismic isolation device 46. Even in the case of occurrence of the above, the upper structure 26 can be seismically supported on the lower structure 30.

Further, in the seismic isolation device replacement structure 10 of the present embodiment, as shown in FIG. 1B, the sliding plate 18 that constitutes the seismic isolation device 46 can be used as a sliding plate that slidably supports the hydraulic jack 40. it can.

Furthermore, in the seismic isolation device replacement structure 10 of the present embodiment, as shown in FIGS. 1B, 1C and 1D, the hydraulic jack 40 is supported so as to be slidably supported by the sliding plate 18. By attaching the to the mounting portions 20 and 22, the construction range in which the replacement work of the support member 16 (laminated rubber 32, sliding member 34) that constitutes the seismic isolation device 46 is performed is kept within the range of the sliding plate 18 to make it compact. be able to. That is, it is possible to replace the seismic isolation device 46 (supporting member 16) within a small construction range.

For example, in the method for exchanging the seismic isolation device shown in FIG. 3, the seismic isolation device is joined to the steel frame column 62 supported by the laminated rubber bearing 60, and the steel frame column 62 and the steel beam 66 forming the upper structure 64 are connected to each other. , A hydraulic jack 72 is arranged between the lower structure 68 and the stainless plate 70 installed on the upper surface, and the upper structure 64 (steel frame 62) is jacked up by the hydraulic jack 72 to replace the laminated rubber bearing 60. To do.

Further, the hydraulic jack 72 is slidably supported on the upper surface of the stainless steel plate 70 via a sliding member 74 provided at the lower end portion of the hydraulic jack 72, which allows the laminated rubber bearing 60 to be replaced even during replacement work. The upper structure 64 can be seismically supported.

However, in order to replace the laminated rubber bearing 60, the hydraulic jack 72 and the stainless plate 70 are arranged at a position distant from the laminated rubber bearing 60, so that the construction range for the replacement work of the laminated rubber bearing 60 becomes wide. ..

On the other hand, in the seismic isolation device exchanging structure 10 of the present embodiment, as shown in FIG. 1A, assuming that the hydraulic jack 40 will be installed later, the seismic isolation device is installed at the design stage of the building 24. The mounting portions 20 and 22 for mounting the hydraulic jacks 40 are set so that the range of construction for replacing the support member 16 (laminated rubber 32, sliding member 34) constituting 46 falls within the range of the sliding plate 18. Therefore, the seismic isolation device 46 (supporting member 16) can be replaced within a small construction range.

Further, in the seismic isolation device exchanging structure 10 of the present embodiment, as shown in FIG. 1B, in the seismic isolation device 46 in which the support member 16 has the laminated rubber 32, the seismic isolation device 46 is used. Even if an earthquake occurs during the work of replacing the (supporting member 16), the upper structure 26 can be seismically supported on the lower structure 30.

Further, in the seismic isolation device replacement structure 10 of the present embodiment, as shown in FIG. 1C, the support member 16 can be pulled laterally and easily taken out.

Furthermore, in the seismic isolation device replacement structure 10 of the present embodiment, as shown in FIGS. 1B, 1C, and 1D, the seismic isolation device replacement structure 10 constitutes the seismic isolation device 46. The example in which the bearing member 16 is replaced with a new bearing member 48 has been shown, but the seismic isolation device needs to be replaced when it is damaged or deteriorated due to an earthquake, fire, or other factors. In addition, in recent years, high durability of buildings has been required, and extremely large-scale seismic isolation structures have been proposed.As a result, the service life of the building becomes longer than that of the seismic isolation device. There is a possibility that it will end up. Therefore, like the seismic isolation device replacement structure 10 of the present embodiment, it is effective in terms of cost effectiveness to take measures to replace the seismic isolation device in advance.

Further, in the seismic isolation device replacement structure 10 of the present embodiment, when the upper structure 26 (upper support portion 12) is jacked up by the hydraulic jack 40, it is supported by the load acting on the upper support portion 12 from the hydraulic jack 40. By providing the reinforcing member 28 in advance so that the portion 12 can withstand, it is not necessary to reinforce the upper support portion 12 when installing the hydraulic jack 40. In addition, since it can be rationally reinforced, a small amount of reinforcement can be used.

The embodiments of the present invention have been described above.

In this embodiment, as shown in FIG. 1( b ), FIG. 1( c ), and FIG. 1( d ), the seismic isolation device replacement structure 10 allows the bearing member 16 constituting the seismic isolation device 46 to be newly supported. Although the example in which the member 48 is replaced is shown, for example, as in the seismic isolation device replacement method shown in the front views of FIGS. 4A to 4H and the plan views of FIGS. 5A to 5H, The seismic isolation device replacement structure 10 may replace the sliding plate 18 constituting the seismic isolation device 46 with a new sliding plate 76. As shown in FIGS. 5A and 5H, the sliding plates 18 and 76 are dividable (in this example, dividable into three with the same shape). Hereinafter, the divided slide plate 18 will be referred to as left-to-right slide plates 18A, 18B, and 18C, and the divided slide plate 76 will be referred to as left-to-right slide plates 76A, 76B, and 76C.

In this seismic isolation device replacement method, first, as shown in FIG. 4A and FIG. 5A which is a cross-sectional view taken along the line BB of FIG. 4A, the lower structure 30 ( In a state in which the upper structure 26 (upper support part 12) is supported on the lower support part 14) (the supporting member 16 supported on the upper surface of the sliding plate 18B receives the vertical load of the upper structure 26). 4(b), and FIG. 5(b) which is a sectional view taken along line CC of FIG. 4(b), the flange 42 of the hydraulic jack 40 is attached to the mounting portions 20 and 22 provided on the reinforcing member 28. The hydraulic jack 40 is attached to the attachment portions 20 and 22 by fixing the.

The hydraulic jacks 40 are arranged symmetrically about the support member 16. The hydraulic jack 40 is arranged on the sliding plates 18A and 18C. That is, the two hydraulic jacks 40 are attached to the reinforcing member 28.

Next, the hydraulic jack 40 is extended to such an extent that the bearing member 16 slightly floats from the upper surface of the sliding plate 18B to form a gap between the upper surface of the sliding plate 18B and the lower surface of the sliding member 34, and the supporting member 16 receives the bearing member. The vertical load of the superstructure 26 that had been used is completely transferred to the hydraulic jack 40 and transferred.

Next, as shown in FIG. 4D and FIG. 5D which is a sectional view taken along line EE of FIG. 4D, the sliding plate 18B is removed from the upper surface of the lower support portion 14 and removed.

Next, as shown in FIG. 4E and FIG. 5E, which is a cross-sectional view taken along line F-F of FIG. 4E, a new slide plate 76B is drawn into the upper surface of the lower support portion 14 to lower the lower support portion. It is arranged and fixed at a predetermined position on the upper surface of 14.

Next, as shown in FIG. 4(f) and FIG. 5(f) which is a sectional view taken along the line G-G in FIG. 4(f), the hydraulic jack 40 is contracted so that the upper structure received by the hydraulic jack 40. All of the vertical loads of 26 are transferred to the bearing member 16.

Next, as shown in FIG. 4(g) and FIG. 5(g) which is a sectional view taken along line HH of FIG. 4(g), the hydraulic jack 40 is attached to the mounting portions 20 and 22 provided on the reinforcing member 28. The bolt fixing the flange 42 is removed, and the hydraulic jack 40 is removed. Further, the sliding plates 18A and 18C are removed from the upper surface of the lower support portion 14 and removed.

Next, as shown in FIG. 4(h) and FIG. 5(h) which is a sectional view taken along the line I-I of FIG. 4(h), new sliding plates 76A and 76C are drawn into the upper surface of the lower support portion 14, and It is arranged and fixed at a predetermined position on the upper surface of the support portion 14. As a result, the work of replacing the sliding plate 18 constituting the seismic isolation device 46 with a new sliding plate 76 is completed.

According to this seismic isolation device replacement method, when the sliding plate 18 constituting the seismic isolation device 46 is replaced, even if an earthquake occurs during the work of replacing the sliding plate 18, the upper structure is placed on the lower structure 30. The object 26 can be seismically isolated.

In this seismic isolation device replacement method, the number and shape of division of the sliding plates 18 and 76 may be appropriately determined according to the installation position and number of the hydraulic jacks 40, the size of the sliding plates 18 and 76, and the like.

Further, in the present embodiment, as shown in FIG. 2, an example in which the hydraulic jacks 40 are symmetrically arranged about the support member 16 is shown, but the arrangement and the number of the hydraulic jacks 40 may be appropriately determined. For example, as shown in the plan view of FIG. 6 and the plan view of FIG. 7, four hydraulic jacks 40 may be arranged around the support member 16 around the support member 16.

Further, in the present embodiment, as shown in FIG. 1B, the support member 16 attached to the reinforcing member 28 provided on the upper support portion 12, the sliding plate 18 attached to the lower support portion 14, An example in which the seismic isolation device replacement structure 10 is configured to include the mounting portions 20 and 22 provided on the reinforcing member 28 and to which the hydraulic jack 40 is mounted is shown, but shown in the front view of FIG. The seismic isolation device replacement structure 78 may be used.

The seismic isolation device replacement structure 78 is configured to include the support member 16, the sliding plate 18, and the mounting portions 20 and 22.

The support member 16 is attached to a reinforcing member 28 that is provided integrally with the lower support portion 14 on the upper surface of the lower support portion 14.

The sliding plate 18 is attached to the lower surface of the upper support portion 12 and is slidably supported by the support member 16 via a sliding member 34.

The mounting portions 20 and 22 are provided around the support member 16 on the upper surface of the reinforcing member 28, and the hydraulic jacks 40 that slidably support the sliding plate 18 are mounted to the mounting portions 20 and 22.

An example of the seismic isolation device replacement method for exchanging the bearing member 16 of the seismic isolation device 46 with a new bearing member 48 by the seismic isolation device replacement structure 78 will be described.

First, as shown in FIG. 8A, a state in which the upper structure 26 (upper support part 12) is supported on the lower structure 30 (lower support part 14) by the support member 16 (the support member 16 is upper part). 8B, the flange 42 of the hydraulic jack 40 is fixed to the mounting portions 20 and 22 provided on the upper surface of the reinforcing member 28 with bolts under the vertical load of the structure 26). As a result, the hydraulic jack 40 is attached to the attachment portions 20 and 22.

The hydraulic jacks 40 are arranged symmetrically about the support member 16. That is, the two hydraulic jacks 40 are attached to the reinforcing member 28.

Next, the hydraulic jack 40 is extended to the extent that the height of the upper structure 26 (upper support portion 12) is not changed, and part of the vertical load of the upper structure 26 received by the support member 16 is applied to the hydraulic jack 40. Transfer.

Next, the bolts that fix the flange 38 of the support member 16 to the reinforcing member 28 are removed, and the flange 38 of the support member 16 is not fixed to the reinforcing member 28.

Next, as shown in the front view of FIG. 8C, the hydraulic jack 40 is extended to the extent that the upper structure 26 (upper support portion 12) is slightly raised, and the upper structure that the bearing member 16 receives. The vertical load of 26 is completely transferred to the hydraulic jack 40.

Next, the support member 16 is removed.

Next, as shown in the front view of FIG. 8D, a new (replacement) bearing member 48 is arranged at a predetermined position on the reinforcing member 28.

Next, the hydraulic jack 40 is contracted to such an extent that the support member 48 slightly receives the vertical load of the upper structure 26 (upper support portion 12).

Next, the support member 48 is attached to the reinforcing member 28 by fixing the flange 54 of the laminated rubber 50 to the upper surface of the reinforcing member 28 with a bolt (not shown). As a result, the seismic isolation device 56 including the support member 48 and the sliding plate 18 is configured.

Next, the hydraulic jack 40 is contracted to jack down the upper structure 26 (upper support portion 12), and the vertical load of the upper structure 26 received by the hydraulic jack 40 is completely transferred to the support member 48.

Next, the bolts fixing the flange 42 of the hydraulic jack 40 to the mounting portions 20 and 22 provided on the reinforcing member 28 are removed, and the hydraulic jack 40 is removed. As a result, the work of replacing the bearing member 16 constituting the seismic isolation device 46 with a new bearing member 48 is completed.

Further, in the present embodiment, as shown in FIGS. 1C and 1D, in a state where the hydraulic jack 40 is extended to the extent that the upper structure 26 (upper support portion 12) is slightly raised, Although an example in which the support member 16 is replaced with a new support member 48 is shown, as shown in the front view of FIG. 9A and the front view of FIG. 9B, the upper structure 26 (upper support portion 12) is shown. The bearing member 16 may be replaced with a new bearing member 48 without raising the height.

Here, first, as shown in FIG. 9A, the hydraulic jack 40 is extended to such an extent that the height of the upper structure 26 (upper support portion 12) is not changed, and the upper structure received by the support member 16 is received. A part of the vertical load of 26 is transferred to the hydraulic jack 40.

Next, the bolts that fix the flange 38 of the support member 16 to the reinforcing member 28 are removed, and the flange 38 of the support member 16 is not fixed to the reinforcing member 28.

Next, the laminated rubber 32 is cooled in a state where the laminated rubber 32 of the support member 48 is surrounded by a heat insulating material, and the laminated rubber 32 is cooled to the extent that a gap is formed between the lower surface of the reinforcing member 28 and the upper surface of the flange 38 of the laminated rubber 32. 32 is thermally contracted in the axial direction (arrow 82), and all the vertical load of the upper structure 26 received by the support member 16 is transferred to the hydraulic jack 40.

Next, the sliding member 18 is pulled laterally to remove the support member 16.

Next, as shown in the front view of FIG. 9(b), the new (replacement) bearing member 48 is cooled and heat-shrinked in the axial direction, and then horizontally pulled over the slide plate 18 to support the bearing. The member 48 is arranged at a predetermined position on the slide plate 18.

Next, when the laminated rubber 32 is at room temperature, the laminated rubber 32 extends in the axial direction (arrow 84), and a part of the vertical load of the upper structure 26 received by the hydraulic jack 40 is part of the laminated rubber 50. Can be transferred to.

Next, the support member 48 is attached to the reinforcing member 28 by fixing the flange 54 of the laminated rubber 50 to the lower surface of the reinforcing member 28 with bolts (not shown). As a result, the seismic isolation device 56 including the support member 48 and the sliding plate 18 is configured.

Next, the hydraulic jack 40 is contracted to completely transfer the vertical load of the upper structure 26 received by the hydraulic jack 40 to the support member 48.

Next, the bolts fixing the flange 42 of the hydraulic jack 40 to the mounting portions 20 and 22 provided on the reinforcing member 28 are removed, and the hydraulic jack 40 is removed. This completes the work of replacing the bearing member 16 with a new bearing member 48.

Further, in the present embodiment, as shown in FIG. 1A, an example in which the base isolation member constituting the support member 16 is the laminated rubber 32 is shown, but a laminated rubber containing a lead plug and a high damping rubber laminated rubber are shown. The bearing member 16 may be configured to have a seismic isolation member having other configurations such as.

In addition, in the present embodiment, as shown in FIG. 1A, an example in which the bearing member 16 is configured to include the laminated rubber 32 as the seismic isolation member and the sliding member 34 is shown. If 16 is slidably supported by the sliding plate 18, 16 does not need to have a seismic isolation member. For example, the support member 16 may be configured to include a pillar member made of a steel pipe and a sliding member 34 provided on the lower surface of the pillar member.

Further, in the present embodiment, the example in which the sliding member 44 is attached to the lower surface of the hydraulic jack 40 is shown. However, as shown in the front view of FIG. 10, the laminated rubber is provided between the hydraulic jack 40 and the sliding member 44. 80 may be provided. Alternatively, laminated rubber may be provided between the hydraulic jack 40 and the reinforcing member 28. With this configuration, when the support member 16 is replaced with a new support member 48, the upper structure 26 can be seismically supported with seismic isolation characteristics similar to those of the seismic isolation device 46 (support member 16). ..

Further, in the present embodiment, as shown in FIG. 1A, a seismic isolation device 46 (bearing member 16, sliding plate 18) that seismically supports the upper structure 26 that constitutes the building 24 on the lower structure 30. Although the seismic isolation device replacement structure 10 replaces the seismic isolation device 56 (the support member 48, the sliding plate 18) and the seismic isolation device 58 (the support member 16, the sliding plate 76) with the seismic isolation device replacement structure 10, the seismic isolation device of the present embodiment is omitted. The seismic device replacement structure 10 may be applied to replace seismic isolation devices that support structures other than buildings. For example, the seismic isolation device replacement structure 10 of the present embodiment can be applied to replacement of a bearing as a seismic isolation device that is installed on a bridge pier as a lower structure and supports a bridge girder as an upper structure.

Further, in the present embodiment, as shown in FIG. 1A, an example in which the upper structure 26 and the lower structure 30 are made of reinforced concrete is shown, but the upper structure 26 and the lower structure 30 are made of reinforced concrete. , Steel-framed structure, steel-framed reinforced concrete structure, CFT structure (Concrete-Filled Steel Tube: filled steel tube concrete structure), mixed structures thereof, and the like, and various structures and scales may be used.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it goes without saying that the present invention can be implemented in various modes without departing from the scope of the present invention.

10, 78 seismic isolation device replacement structure 12 upper support portion 14 lower support portion 16 support members 18, 18A, 18B, 18C sliding plates 20, 22 mounting portion 26 upper structure 30 lower structure 32 laminated rubber 40 hydraulic jack (jack)
76, 76A, 76B, 76C Sliding plate

Claims (3)

An upper support portion provided on the lower surface of the upper structure,
A lower support portion provided on the upper surface of the lower structure,
A bearing member attached to the upper support portion or the lower support portion,
A sliding plate that is attached to the lower support portion or the upper support portion and that slidably supports the bearing member or that is slidably supported by the bearing member;
An attachment portion that is provided around the support member of the upper support portion or the lower support portion and that is slidably supported by the sliding plate or a jack for slidingly supporting the sliding plate is attached.
Seismic isolation device replacement structure. The seismic isolation device replacement structure according to claim 1, wherein the support member is made of laminated rubber. The seismic isolation device replacement structure according to claim 1, wherein the sliding plate is separable.