How to replace and reinforce construction structures

Abstract

To provide a replacement / reinforcement method for a construction structure, which enables quick replacement or reinforcement of the construction structure while ensuring the function of the construction structure.SOLUTION: The replacement / reinforcement method for a construction structure is a method for replacing or reinforcing a plurality of seismic isolation devices 10 installed in a structure 1 and capable of receiving at least the horizontal load of the structure 1, including a first step of simultaneously replacing any one of a first point-symmetrical set PG1 to a sixth point-symmetrical set PG6, which is a set of a pair of seismic isolation devices 10 having a substantially point-symmetrical positional relationship among the plurality of seismic isolation devices 10.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a method for replacing and reinforcing a construction structure. [Background technology]

[0002] One technique that has been proposed for replacing multiple seismic isolation devices installed in a building is to install a jack device between the upper structure and lower structure located around each seismic isolation device, and replace each seismic isolation device while changing the height of the jack device (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-084038 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-described conventional technology, for example, when replacing two or more of a plurality of seismic isolation devices simultaneously, if the replacement of the two or more devices is attempted without regard to the relative positions of the two or more seismic isolation devices, an imbalance in the seismic isolation function of the seismic isolation devices of the entire building will occur, and if an external force such as an earthquake or typhoon acts on the building during the replacement, a torsional response that was not anticipated in the structural design will occur in the building, which could make it difficult to ensure the seismic isolation function of the multiple seismic isolation devices. Therefore, there is room for improvement in terms of quickly replacing or reinforcing a constructed structure while ensuring the functions of multiple constructed structures, such as the seismic isolation function of multiple seismic isolation devices.

[0005] The present invention has been made in consideration of the above, and aims to provide a method for replacing or reinforcing a constructed structure, which enables the constructed structure to be quickly replaced or reinforced while ensuring its functionality. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, the method for replacing or reinforcing a construction structure according to claim 1 is a method for replacing or reinforcing a plurality of construction structures that are installed on a structure and can bear at least a horizontal load of the structure, and includes a first step of simultaneously replacing or reinforcing a pair of construction structures that are positioned approximately point-symmetrically among the plurality of construction structures. The center of the approximate point symmetry is the center of gravity of the structure or a position in the vicinity thereof.

[0007] The method for replacing and reinforcing a construction structure described in claim 2 is the method for replacing and reinforcing a construction structure described in claim 1, in which in the first step, of the pair of construction structures that are in a positional relationship that is approximately point-symmetric, the pair that is located farthest from the center of gravity of the structure is preferentially replaced or reinforced.

[0008] The method for replacing and reinforcing a construction structure described in claim 3 is a method for replacing and reinforcing a construction structure described in claim 1 or 2, in which in the first step, a pair of construction structures that are positioned approximately point-symmetrically are sequentially replaced or reinforced around an axis whose central axis is the center of gravity of the structure.

[0009] The method for replacing and reinforcing a construction structure described in claim 4 is a method for replacing and reinforcing a construction structure described in any one of claims 1 to 3, and further includes, after the first step, a second step of simultaneously replacing or reinforcing a pair of construction structures among the plurality of construction structures that are positioned approximately line-symmetrically.

[0010] The method for replacing and reinforcing a construction structure described in claim 5 is a method for replacing and reinforcing a construction structure described in any one of claims 1 to 4, wherein the construction structure includes a seismic isolation device, a seismic control device, a column material, a brace material, a slab material, a beam material, and / or a pile material.

[0011] The method for replacing and reinforcing a construction structure described in claim 6 is the method for replacing and reinforcing a construction structure described in claim 5, wherein the seismic isolation device includes a sliding bearing, and includes a third step of individually replacing the sliding bearing without being influenced by either the approximately point-symmetric or approximately line-symmetric positional relationship with other seismic isolation devices. [Effects of the Invention]

[0012] According to the method for replacing or reinforcing a construction structure described in claim 1, it includes a first step of simultaneously replacing or reinforcing a pair of construction structures among a plurality of construction structures that are positioned approximately point-symmetrically.Therefore, when simultaneously replacing or reinforcing a pair of construction structures, it is possible to prevent imbalances in the functions of the plurality of construction structures, and it is possible to quickly replace or reinforce the plurality of construction structures while maintaining their functions.

[0013] According to the method for replacing or reinforcing a construction structure described in claim 2, in the first step, of a pair of construction structures that are positioned approximately point-symmetrically, the pair that is located farthest from the center of gravity of the structure is replaced or reinforced preferentially.Therefore, compared to when the pair that is closest to the center of gravity of the structure is replaced or reinforced preferentially, it is possible to prevent imbalances in the functions of multiple construction structures when replacing or reinforcing the construction structures, and it is easier to ensure the functions of multiple construction structures.

[0014] According to the method for replacing or reinforcing a construction structure described in claim 3, in the first step, a pair of construction structures that are positioned approximately point-symmetrically are replaced or reinforced sequentially around an axis whose central axis is the center of gravity of the structure, so that the replacement or reinforcement work of the construction structure can be carried out efficiently, and the workability of the replacement or reinforcement work can be improved.

[0015] According to the method for replacing or reinforcing a construction structure described in claim 4, after the first step, a second step is further included in which a pair of construction structures that are positioned approximately line-symmetrically among the multiple construction structures are simultaneously replaced or reinforced.Therefore, compared to when the pair of construction structures are replaced or reinforced after the first step without being influenced by their positional relationship, it is possible to suppress imbalances in the functions of the multiple construction structures when the construction structures are replaced or reinforced, and it is possible to replace or reinforce the multiple construction structures more quickly while maintaining their functions.

[0016] According to the method for replacing or reinforcing a construction structure described in claim 5, since the construction structure includes seismic isolation devices, seismic control devices, pillar materials, brace materials, slab materials, beam materials, and / or pile materials, when a pair of seismic isolation devices, seismic control devices, pillar materials, brace materials, slab materials, beam materials, and / or pile materials are replaced or reinforced simultaneously, it is possible to prevent imbalances in the functions of multiple seismic isolation devices, etc., and it is possible to quickly replace or reinforce multiple seismic isolation devices, etc. while maintaining the functions of the multiple seismic isolation devices, etc.

[0017] According to the method for replacing and reinforcing a construction structure described in claim 6, the method includes a third step of individually replacing the sliding bearings without being influenced by their positional relationship with other seismic isolation devices, which is approximately point-symmetric or approximately line-symmetric. This means that the sliding bearings can be replaced without being influenced by their positional relationship with other seismic isolation devices, making it easier to replace the sliding bearings according to the situation. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a plan view (partially shown in cross section) of a story on which a seismic isolation device is installed, among the stories of a structure according to an embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 (partially omitted). [Figure 3] FIG. 2 is a diagram showing a method for replacing and reinforcing a construction structure, and shows the area corresponding to FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, with reference to the accompanying drawings, an embodiment of the method for replacing and reinforcing a construction structure according to the present invention will be described in detail. First, [I] the basic concept of the embodiment will be explained, then [II] specific details of the embodiment will be explained, and finally, [III] modified examples of the embodiment will be explained. However, the present invention is not limited to the embodiment.

[0020] [I] Basic Concept of the Embodiment First, the basic concept of the embodiment will be described. The embodiment generally relates to a replacement / reinforcement method for replacing or reinforcing a plurality of construction structures that are installed on a structure and are capable of bearing at least a horizontal load of the structure.

[0021] Here, the specific structure and type of "structure" are arbitrary, but the concept includes, for example, architectural structures such as office buildings, commercial facilities, public facilities, and apartment complexes such as condominiums and apartment buildings, as well as civil engineering structures such as bridges and tunnels. In this embodiment, however, it will be described as an office building under construction with multiple floors.

[0022] Furthermore, "construction structure" refers to a structure installed in a structure, and is a concept that includes, for example, seismic isolation devices, seismic control devices, pillar materials, brace materials, slab materials, beam materials, and / or pile materials, but in the embodiment, it is described as a seismic isolation device (specifically, laminated rubber bearing) that can withstand the horizontal and vertical loads of a structure.

[0023] Also, "replacement" means replacing an existing construction structure with a new construction structure.

[0024] Furthermore, "reinforcement" means repairing or correcting defects in a construction structure, preventing or mitigating predicted future defects in a construction structure, or improving the strength of a construction structure. For example, this includes adding new members (e.g., reinforcing members) to an existing construction structure, or replacing some members (e.g., defective members) of an existing construction structure with other members.

[0025] In the following embodiments, a case will be described in which the replacement / reinforcement method is applied to replacing an existing seismic isolation device installed in a structure with a new seismic isolation device.

[0026] [II] Specific details of the embodiment Next, specific details of the embodiment will be described.

[0027] (composition) First, the configuration of a structure to which the replacement / reinforcement method according to the embodiment is applied will be described.

[0028] Fig. 1 is a plan view (partially shown in cross section) of a story on which a seismic isolation device is installed, among the stories of a structure according to an embodiment of the present invention. Fig. 2 is a cross-sectional view taken along the line AA in Fig. 1 (partially omitted).

[0029] In the following description, the X direction in FIG. 1 is referred to as the left-right direction or width direction of the structure (the -X direction is the left direction of the structure, and the +X direction is the right direction of the structure), the Y direction in FIG. 1 is referred to as the front-to-back direction of the structure (the +Y direction is the front direction of the structure, and the -Y direction is the rear direction of the structure), and the Z direction in FIG. 2 is referred to as the up-down direction of the structure (the +Z direction is the top direction of the structure, and the -Z direction is the bottom direction of the structure).

[0030] The structure 1 is, for example, a steel-framed (or reinforced concrete) architectural structure (specifically, a multi-story office building under construction), and as shown in Figures 1 and 2, it comprises floor materials 2, pillar materials (not shown), beam materials 4, wall materials 5, and a seismic isolation device 10.

[0031] (Composition - Flooring) The floor materials 2 constitute the floors of the structure 1, and a plurality of them are arranged side by side in the vertical direction at intervals from each other.

[0032] In the following description, among the plurality of floor materials 2, the floor material 2a in FIG. 2 located directly below the seismic isolation device 10 will be referred to as the "foundation floor material 2a."

[0033] 2, a first skeleton 6 is provided on the foundation floor material 2a. The first skeleton 6 is a lower foundation material for installing the seismic isolation devices 10. This first skeleton 6 is constructed using, for example, a known foundation material (for example, a concrete foundation material), is formed integrally with the foundation floor material 2a, and is provided in portions of the foundation floor material 2a corresponding to each of the seismic isolation devices 10 (i.e., a plurality of first skeletons 6 are provided on the foundation floor material 2a).

[0034] (Structure - Pillar material) The pillars support the floor materials 2, and a plurality of pillars are provided between the floor materials 2 (that is, in the space between each story of the structure 1).

[0035] (Composition - Beams) The beams 4 support the floor materials 2, and are provided in plural at positions where they can come into contact with the underside of each floor material 2, or are provided between floor materials 2 on the same floor.

[0036] In the following, as necessary, of the multiple beams 4, the beam 4a in Figure 2 located directly above the seismic isolation device 10 will be referred to as the "upper foundation beam 4a," and the beam 4b in Figure 2 located directly below the seismic isolation device 10 and connected to the foundation floor 2a will be referred to as the "lower foundation beam 4b."

[0037] 2, a second skeleton 7 is provided on the upper foundation beam 4a. The second skeleton 7 is an upper foundation material for installing the seismic isolation devices 10. The second skeleton 7 is constructed using, for example, a known foundation material (for example, a concrete foundation material), is formed integrally with the upper foundation beam 4a and the column material, and is provided on the upper foundation beam 4a at portions corresponding to each seismic isolation device 10 (i.e., a plurality of second skeletons 7 are provided on the upper foundation beam 4a).

[0038] (Composition - Wall material) The wall material 5 is used to separate the floor materials 2 from one another, and a plurality of wall materials 5 are provided between the floor materials 2, etc.

[0039] (Configuration - Seismic isolation device) Returning to Fig. 1, the seismic isolation device 10 is a construction structure that is installed on the structure 1 and is capable of receiving the horizontal and vertical loads of the structure 1, and is a device that prevents earthquake vibrations from being directly transmitted to the structure 1. This seismic isolation device 10 is provided between each of the first frames 6 and each of the second frames 7 (i.e., a plurality of such devices are provided).

[0040] Specifically, as shown in Figure 1, multiple rows are provided at intervals in the left-right and front-rear directions (in Figure 1, seven rows are provided in the left-right direction and two to four rows are provided in the front-rear direction).

[0041] As shown in FIG. 2, each seismic isolation device 10 includes a seismic isolation device main body 20, an upper flange plate 21a, a lower flange plate 21b, an upper base plate 22a, a lower base plate 22b, and a base portion 23.

[0042] In the following, as necessary, of the multiple seismic isolation devices 10, the seismic isolation devices 11a to 11d in the first row from the left in FIG. 1 (the seismic isolation devices 11a to 11d are arranged in order from front to rear in FIG. 1; the same applies to the seismic isolation devices in the other rows) will be referred to as the "first seismic isolation device 11a," "second seismic isolation device 11b," "third seismic isolation device 11c," and "fourth seismic isolation device 11d." Furthermore, the seismic isolation devices 12a to 12c in the second row from the left in FIG. 1 will be referred to as the "fifth seismic isolation device 12a," "sixth seismic isolation device 12b," and "seventh seismic isolation device 12c." Furthermore, the seismic isolation devices 13a to 13c in the third row from the left in FIG. 1 will be referred to as the "eighth seismic isolation device 13a," "ninth seismic isolation device 13b," and "tenth seismic isolation device 13c." Furthermore, the seismic isolation devices 14a to 14b in the fourth row from the left in FIG. 1 will be referred to as the "eleventh seismic isolation device 14a" and the "twelfth seismic isolation device 14b." Furthermore, the seismic isolation devices 15a to 15b in the fifth row from the left in FIG. 1 will be referred to as the "thirteenth seismic isolation device 15a" and the "fourteenth seismic isolation device 15b." Furthermore, the seismic isolation devices 16a to 16c in the sixth row from the left in FIG. 1 will be referred to as the "fifteenth seismic isolation device 16a," the "sixteenth seismic isolation device 16b," and the "seventeenth seismic isolation device 16c." Furthermore, the seismic isolation devices 17a to 17c in the seventh row from the left in FIG. 1 will be referred to as the "eighteenth seismic isolation device 17a," the "nineteenth seismic isolation device 17b," and the "twentieth seismic isolation device 17c."

[0043] (Configuration - Seismic isolation device - Seismic isolation device body) The seismic isolation device main body 20 is the basic structure of the seismic isolation device 10, and is configured using, for example, a known seismic isolation laminated rubber bearing (for example, a cylindrical seismic isolation laminated bearing with a diameter of about 650 mm).

[0044] (Configuration - Seismic isolation device - Upper flange plate, lower flange plate) The upper flange plate 21a and the lower flange plate 21b are plates attached to the seismic isolation device main body 20. The upper flange plate 21a and the lower flange plate 21b are formed, for example, from a rectangular steel plate-like body (for example, a substantially circular plate-like body with a diameter of about 1000 mm) whose planar dimensions are larger than those of the seismic isolation device main body 20. As shown in Fig. 2, the upper flange plate 21a is attached to the upper end of the seismic isolation device main body 20 by a fastener or the like (not shown), and the lower flange plate 21b is attached to the lower end of the seismic isolation device main body 20 by a fastener or the like (not shown).

[0045] (Configuration - Seismic isolation device - Upper base plate, lower base plate) The upper base plate 22a is a plate for attaching the upper flange plate 21a to the second body 7, and is formed, for example, from a rectangular steel plate (for example, a substantially circular plate with a diameter of about 1000 mm) whose planar dimensions are approximately the same as those of the upper flange plate 21a, and is attached to the lower end of the second body 7 by a fixing device or the like (not shown), as shown in Figure 2.

[0046] The lower base plate 22b is a plate for attaching the lower flange plate 21b to the first body 6, and is formed, for example, from a rectangular steel plate (for example, a substantially circular plate with a diameter of about 1200 mm) whose planar dimensions are larger than those of the lower flange plate 21b, and is attached to the upper end of the first body 6 by a fixing device or the like (not shown), as shown in Figure 2.

[0047] (Configuration - Seismic isolation device - Base) Base portion 23 is intended to fill the gap between lower flange plate 21b and lower base plate 22b. Base portion 23 is formed, for example, from a rectangular concrete plate (e.g., a substantially square plate with sides of about 1000 mm) whose planar dimensions are substantially the same as those of lower flange plate 21b, and is provided between lower flange plate 21b and lower base plate 22b as shown in Fig. 2.

[0048] (Configuration - Seismic isolation device - Other configurations) Furthermore, the method of fixing the seismic isolation device 10 is arbitrary, but in the embodiment, as shown in Figure 2, it is fixed to a mounting hole (not shown) formed in the second body 7 by an upper fixing device 24a (e.g., a bolt with a double eccentric ring, etc.) via insertion holes (not shown) formed in the upper flange plate 21a and the upper base plate 22a, and is fixed to a mounting hole (not shown) formed in the first body 6 by a lower fixing device 24b (e.g., a bolt, etc.) via insertion holes (not shown) formed in the lower flange plate 21b, the lower base plate 22b, and the base portion 23.

[0049] (Methods for replacing and reinforcing construction structures) Next, we will explain how to replace and reinforce construction structures (specifically, seismic isolation devices).

[0050] Fig. 3 is a diagram showing a method for replacing and reinforcing a construction structure, and shows an area corresponding to Fig. 1. The replacement and reinforcing method according to the embodiment includes a first step and a second step.

[0051] (Method for replacing and reinforcing construction structures - Step 1) First, the first step will be described.

[0052] The first step is a step of simultaneously replacing or reinforcing a pair of seismic isolation devices 10, which are positioned approximately point-symmetrically, among the plurality of seismic isolation devices 10.

[0053] Here, in the embodiment, "a positional relationship that is approximately point-symmetric" means a positional relationship in which the position of one of the pair of seismic isolation devices 10 when rotated approximately 180 degrees around the center of gravity CG of the structure 1 (or a position nearby) as the rotation center is approximately the same as the position of the other of the pair of seismic isolation devices 10.

[0054] Specifically, as shown in FIG. 3, among the pairs of seismic isolation devices 10 that are in the above-mentioned substantially point-symmetrical positional relationship, there are a pair PG1 of the fourth seismic isolation device 11d and the eighteenth seismic isolation device 17a (hereinafter referred to as the "first point-symmetrical pair PG1"), a pair PG2 of the first seismic isolation device 11a and the twentieth seismic isolation device 17c (hereinafter referred to as the "second point-symmetrical pair PG2"), a pair PG3 of the third seismic isolation device 11c and the fifteenth seismic isolation device 16a (hereinafter referred to as the "fifteenth point-symmetrical pair PG3"), and a pair PG4 of the third seismic isolation device 11c and the fifteenth seismic isolation device 16a (hereinafter referred to as the "fifteenth point-symmetrical pair PG4"). , referred to as the "third point symmetric group PG3"), the group PG4 of the seventh seismic isolation device 12c and the thirteenth seismic isolation device 15a (hereinafter referred to as the "fourth point symmetric group PG4"), the group PG5 of the second seismic isolation device 11b and the nineteenth seismic isolation device 17b (hereinafter referred to as the "fifth point symmetric group PG5"), and the group PG6 of the fifth seismic isolation device 12a and the seventeenth seismic isolation device 16c (hereinafter referred to as the "sixth point symmetric group PG6") are replaced.

[0055] Furthermore, the method of replacing the first point-symmetric group PG1 to the sixth point-symmetric group PG6 is arbitrary, but in this embodiment, among the pairs of seismic isolation devices 10 that are in the above-mentioned approximately point-symmetric positional relationship, the pair that is located farthest from the center of gravity CG of the structure 1 is replaced preferentially.

[0056] Specifically, the first point symmetric group PG1, the second point symmetric group PG2, the third point symmetric group PG3, the fourth point symmetric group PG4, the fifth point symmetric group PG5, and the sixth point symmetric group PG6 are exchanged in this order.

[0057] This makes it possible to prevent imbalances in the functions of multiple seismic isolation devices 10 when replacing them, compared to when priority is given to replacing sets that are located closer to the center of gravity CG of the structure 1, making it easier to ensure the functions of multiple seismic isolation devices 10.

[0058] However, the present invention is not limited to this, and for example, pairs of seismic isolation devices 10 that are positioned in the above-described approximately point-symmetric relationship may be exchanged sequentially around an axis that is the center of gravity CG of the structure 1. As an example, these sets may be exchanged in the order of the third point-symmetric set PG3, the first point-symmetric set PG1, the fourth point-symmetric set PG4, the sixth point-symmetric set PG6, the second point-symmetric set PG2, and the fifth point-symmetric set PG5.

[0059] Alternatively, pairs of seismic isolation devices 10 that are positioned approximately symmetrically about a point may be replaced sequentially around an axis centered on the center of gravity CG of the structure 1, with priority given to the pair that is farthest from the center of gravity CG of the structure 1. As an example, these pairs may be replaced in the order of the first point-symmetric pair PG1, the fourth point-symmetric pair PG4, the sixth point-symmetric pair PG6, the second point-symmetric pair PG2, the fifth point-symmetric pair PG5, and the third point-symmetric pair PG3.

[0060] This allows the replacement work of the seismic isolation device 10 to be carried out efficiently, and makes it possible to improve the workability of the replacement work.

[0061] Furthermore, the method for replacing each seismic isolation device 10 is arbitrary, but for example, the device may be replaced as follows (the same applies to the method for replacing each seismic isolation device 10 in the second step).

[0062] That is, first, the upper fixing device 24a and the lower fixing device 24b that secure the existing seismic isolation device 10 are removed. Next, a plurality of load-receiving parts (e.g., hydraulic jacks, etc.) (not shown) are installed around the existing seismic isolation device 10, and the load-receiving parts are jacked up so that the bearing pressure (i.e., the axial force of the seismic isolation device 10) that the seismic isolation device 10 receives from the second frame 7 becomes zero, thereby causing the load of the upper foundation beam 4a (specifically, the weight of the upper foundation beam 4a) to be received by the load-receiving parts. In this case, the height position of the upper foundation beam 4a rises by a predetermined amount (e.g., about 1 mm), and therefore the height positions of the members (e.g., pillars, floor material 2, etc.) directly or indirectly connected to the upper foundation beam 4a also rise by the same predetermined amount. Next, a cooling unit (not shown) (for example, a cooler capable of injecting liquid nitrogen) is used to cool the rubber portion of the existing seismic isolation device 10, thereby reducing the vertical length of the existing seismic isolation device 10. After that, a moving unit (not shown) (for example, a chain block or the like) is used to move the existing seismic isolation device 10 (specifically, the seismic isolation device main body 20, the upper flange plate 21a, and the lower flange plate 21b) from between the first body 6 and the second body 7 to a predetermined position, thereby removing the existing seismic isolation device 10. Next, the moving unit is used to position the new seismic isolation device 10 (specifically, the seismic isolation device main body 20, the upper flange plate 21a, and the lower flange plate 21b) between the first body 6 and the second body 7, and then the new seismic isolation device 10 is fixed to the first body 6 and the second body 7 by the upper fixing device 24a and the lower fixing device 24b. Next, the load-receiving portion is unloaded so that the newly installed seismic isolation device 10 can receive the bearing pressure from the second body 7. In this case, the height position of the upper foundation beam 4a is lowered by a predetermined amount (for example, about 1 mm), and the height positions of the members (for example, pillars and floor members 2) directly or indirectly connected to the upper foundation beam 4a are also lowered by the same predetermined amount. Therefore, the height positions of the upper foundation beam 4a and the above-mentioned connected members can be returned to approximately the positions they were in before the existing seismic isolation device 10 was removed. After that, the load-receiving portion is removed to a predetermined position.

[0063] This first step prevents imbalances in the functions of the multiple seismic isolation devices 10 when a pair of seismic isolation devices 10 are replaced simultaneously, making it possible to quickly replace the multiple seismic isolation devices 10 while maintaining the functions of the multiple seismic isolation devices 10.

[0064] (Method for replacing and reinforcing construction structures - Step 2) Next, the second step will be described.

[0065] The second step is a step performed after the first step in which a pair of the seismic isolation devices 10, which are positioned approximately line-symmetrically among the plurality of seismic isolation devices 10, are simultaneously replaced or reinforced.

[0066] Here, in the embodiment, "a positional relationship that is approximately symmetrical in axis" means a positional relationship in which the position of one of a pair of seismic isolation devices 10 when flipped around the first axis of symmetry AS1 or the second axis of symmetry AS2 in Figure 3 as the rotation axis approximately coincides with the position of the other of the pair of seismic isolation devices 10.

[0067] The "first axis of symmetry AS1" is a horizontal axis that overlaps with the center of gravity CG (or a position nearby) of the structure 1, and is described as a horizontal axis along the left-right direction in Fig. 3. The "second axis of symmetry AS2" is a horizontal axis that overlaps with the center of gravity CG (or a position nearby) of the structure 1 and is approximately perpendicular to the first axis of symmetry AS1, and is described as a horizontal axis along the front-rear direction in Fig. 3.

[0068] Specifically, as shown in Figure 3, of the pairs of seismic isolation devices 10 that are positioned approximately axisymmetrically as described above, the pair LG1 of the 6th seismic isolation device 12b and the 16th seismic isolation device 16b (hereinafter referred to as the "first axisymmetric group LG1"), the pair LG2 of the 10th seismic isolation device 13c and the 11th seismic isolation device 14a (hereinafter referred to as the "second axisymmetric group LG2"), the pair LG3 of the 9th seismic isolation device 13b and the 14th seismic isolation device 15b (hereinafter referred to as the "third axisymmetric group LG3"), and the pair LG4 of the 8th seismic isolation device 13a and the 12th seismic isolation device 14b (hereinafter referred to as the "fourth axisymmetric group LG4") are exchanged.

[0069] Furthermore, the method of replacing the first axisymmetric group LG1 to the fourth axisymmetric group LG4 is arbitrary, but in this embodiment, among the pairs of seismic isolation devices 10 that are in the above-mentioned approximately axisymmetric positional relationship, the pair that is located farthest from the center of gravity CG of the structure 1 is replaced preferentially.

[0070] Specifically, the first axisymmetric group LG1, the second axisymmetric group LG2, the third axisymmetric group LG3, and the fourth axisymmetric group LG4 are exchanged in this order.

[0071] This makes it possible to prevent imbalances in the functions of multiple seismic isolation devices 10 when replacing them, compared to when priority is given to replacing sets that are located closer to the center of gravity CG of the structure 1, making it easier to ensure the functions of multiple seismic isolation devices 10.

[0072] This second step makes it possible to prevent imbalances in the functions of multiple seismic isolation devices 10 when replacing them, compared to when a pair of seismic isolation devices 10 are replaced after the first step without being influenced by their positional relationship, and makes it possible to replace multiple seismic isolation devices 10 more quickly while maintaining the functions of the multiple seismic isolation devices 10.

[0073] (Effects of the embodiment) According to this embodiment, the method includes a first step of simultaneously replacing a pair of construction structures that are positioned approximately point-symmetrically among the multiple construction structures.This prevents imbalances in the functions of the multiple construction structures when simultaneously replacing a pair of construction structures, and makes it possible to quickly replace the multiple construction structures while maintaining their functions.

[0074] Furthermore, in the first step, among a pair of construction structures that are positioned approximately point-symmetrically, the pair that is located farthest from the center of gravity CG of structure 1 is replaced preferentially. Therefore, compared to when the pair that is closest to the center of gravity CG of structure 1 is replaced preferentially, it is possible to prevent imbalances in the functions of multiple construction structures when replacing the construction structures, making it easier to ensure the functions of multiple construction structures.

[0075] In addition, in the first step, a pair of construction structures that are positioned approximately point-symmetrically are sequentially replaced around an axis whose central axis is the center of gravity CG of the structure 1, so that the replacement work of the construction structures can be carried out efficiently, and the workability of the replacement work can be improved.

[0076] In addition, the method further includes a second step after the first step of simultaneously replacing a pair of construction structures among the multiple construction structures that are positioned approximately line-symmetrically.This makes it possible to prevent imbalances in the functions of the multiple construction structures when replacing them, compared to when the pair of construction structures are replaced after the first step without being influenced by their positional relationship, and makes it possible to replace the multiple construction structures more quickly while maintaining their functions.

[0077] Furthermore, since the construction structure includes the seismic isolation device 10, when a pair of seismic isolation devices 10 are replaced simultaneously, it is possible to prevent imbalances in the functions of the multiple seismic isolation devices 10, and it is possible to quickly replace the multiple seismic isolation devices 10 while maintaining the functions of the multiple seismic isolation devices 10.

[0078] [III] Modifications to the embodiment Although the embodiments of the present invention have been described above, the specific configurations and means of the present invention can be modified and improved as desired within the scope of the technical ideas of the inventions set forth in the claims. Such modifications will be described below.

[0079] (About the problem to be solved and the effects of the invention) First, the problems that the invention aims to solve and the effects of the invention are not limited to those described above, and the present invention may solve problems that are not described above or achieve effects that are not described above, or may solve only some of the problems that are described or achieve only some of the effects that are described.

[0080] (shape, numbers, structure, time series) The components illustrated in the embodiments and drawings may be modified and improved as desired within the scope of the technical concept of the present invention in terms of shape, numerical value, or the structure or chronological relationship of multiple components.

[0081] (About construction structures) In the above embodiment, the construction structure is described as the seismic isolation device 10 capable of receiving both the horizontal load and the vertical load of the structure 1, but is not limited to this. For example, it may be a seismic control device (one example is an oil damper) capable of receiving only the horizontal load of the structure 1.

[0082] In the above embodiment, the construction structure is described as the seismic isolation device 10 to be replaced, but the construction structure is not limited to this. For example, the construction structure may be a structure to be reinforced (for example, a column, a brace, a slab, a beam 4, and / or a pile).

[0083] In this case, for example, if the constructed structure is a pillar, a pair of pillars that are positioned approximately point-symmetrically may be reinforced simultaneously in the first step of the constructed structure replacement / reinforcement method (for example, reinforcing members may be attached to the existing pillars, and / or some of the members of the existing pillars may be replaced with other members). Also, a pair of pillars that are positioned approximately line-symmetrically may be reinforced simultaneously in the second step of the constructed structure replacement / reinforcement method. Such a replacement / reinforcement method can prevent imbalances in the functions of multiple pillars when simultaneously reinforcing a pair of pillars, and enables rapid reinforcement of the pillars while maintaining the functions of the multiple pillars.

[0084] (About seismic isolation devices) In the above embodiment, the seismic isolation device 10 has been described as including the upper flange plate 21a, the lower flange plate 21b, the upper base plate 22a, the lower base plate 22b, and the base portion 23, but this is not limitative. For example, either the upper flange plate 21a or the upper base plate 22a may be omitted. Alternatively, either one or two of the lower flange plate 21b, the lower base plate 22b, or the base portion 23 may be omitted.

[0085] (Regarding replacement and reinforcement methods for construction structures) In the above embodiment, the method for replacing and reinforcing a construction structure has been described as including the first and second steps, but is not limited thereto. For example, if all of the seismic isolation devices 10 to be replaced can be replaced by the first step, the second step may be omitted.

[0086] Furthermore, if the multiple seismic isolation devices 10 include at least one sliding bearing, in addition to the first and second steps, a third step may be included in which the sliding bearings are individually replaced without being affected by their positional relationship with the other seismic isolation devices 10, which is approximately point-symmetric or approximately line-symmetric. As an example, if the second seismic isolation device 11b and the nineteenth seismic isolation device 17b of the seismic isolation device 10 shown in FIG. 1 are sliding bearings, the second seismic isolation device 11b and the nineteenth seismic isolation device 17b may be individually replaced at the same time or at different times before the first step, after the first step, or after the second step. Such a third step allows the sliding bearings to be replaced without being affected by their positional relationship with the other seismic isolation devices 10, making it easier to replace the sliding bearings according to the situation.

[0087] Furthermore, if there are any seismic isolation devices 10 that have not been replaced even after the first and second steps have been performed, a fourth step may be included in which the seismic isolation device 10 that is located farthest from the center of gravity CG of the structure 1 is replaced preferentially, or the seismic isolation devices 10 are replaced randomly.

[0088] Furthermore, in the above embodiment, the method for replacing and reinforcing a construction structure has been described as replacing all of the multiple seismic isolation devices 10, but this is not limited to this. For example, it is also possible to replace only some of the multiple seismic isolation devices 10 (as an example, the seismic isolation devices 10 of the first axisymmetric group LG1, the second axisymmetric group LG2, and the third axisymmetric group LG3).

[0089] (Regarding the first step) In the above embodiment, it has been explained that in the first step, of a pair of seismic isolation devices 10 positioned in a substantially point-symmetric relationship, the pair farthest from the center of gravity CG of the structure 1 is replaced preferentially, but this is not limited to this. For example, the pair closest to the center of gravity CG of the structure 1 may be replaced preferentially, or a pair of seismic isolation devices 10 positioned in a substantially point-symmetric relationship may be replaced randomly (note that the same applies to the second step).

[0090] Furthermore, in the above embodiment, the newly installed seismic isolation device 10 is described as including the seismic isolation device main body 20, the upper flange plate 21a, and the lower flange plate 21b in the first step, but this is not limiting. For example, from the viewpoint of improving the ease of installation of the newly installed seismic isolation device 10, the newly installed seismic isolation device 10 may further include a filler (specifically, a filler filled with grout, etc.) for filling the gap between the first body 6 or the second body 7 and the newly installed seismic isolation device 10, and a sealing portion for holding the filler.

[0091] (Addendum) The method for replacing or reinforcing a construction structure of Appendix 1 is a method for replacing or reinforcing a plurality of construction structures that are installed on a structure and are capable of bearing at least the horizontal load of the structure, and includes a first step of simultaneously replacing or reinforcing a pair of construction structures that are positioned approximately point-symmetrically among the plurality of construction structures.

[0092] The method for replacing or reinforcing a construction structure of Appendix 2 is a method for replacing or reinforcing a construction structure described in Appendix 1, in which in the first step, of a pair of construction structures that are in a positional relationship that is approximately point-symmetric, the pair that is located farthest from the center of gravity of the structure is preferentially replaced or reinforced.

[0093] The method for replacing or reinforcing a construction structure of Appendix 3 is a method for replacing or reinforcing a construction structure described in Appendix 1 or 2, in which in the first step, a pair of construction structures that are positioned approximately point-symmetrically are sequentially replaced or reinforced around an axis whose central axis is the center of gravity of the structure.

[0094] The method for replacing or reinforcing a construction structure of Appendix 4 is a method for replacing or reinforcing a construction structure described in any one of Appendixes 1 to 3, and further includes, after the first step, a second step of simultaneously replacing or reinforcing a pair of construction structures among the plurality of construction structures that are positioned approximately line-symmetrically.

[0095] The method for replacing or reinforcing a construction structure of Appendix 5 is a method for replacing or reinforcing a construction structure described in any one of Appendixes 1 to 4, wherein the construction structure includes a seismic isolation device, a seismic control device, a column material, a brace material, a slab material, a beam material, or / and a pile material.

[0096] The method for replacing and reinforcing a construction structure of Appendix 6 is a method for replacing and reinforcing a construction structure described in Appendix 5, in which the seismic isolation devices include sliding bearings, and the method includes a third step of individually replacing the sliding bearings without being influenced by either the approximately point-symmetric or approximately line-symmetric positional relationship with other seismic isolation devices.

[0097] (Effect of supplementary notes) According to the method for replacing or reinforcing a construction structure described in Appendix 1, the method includes a first step of simultaneously replacing or reinforcing a pair of construction structures that are positioned approximately point-symmetrically among a plurality of construction structures. Therefore, when simultaneously replacing or reinforcing a pair of construction structures, it is possible to prevent imbalances in the functions of the plurality of construction structures, and it is possible to quickly replace or reinforce the plurality of construction structures while maintaining their functions.

[0098] According to the method for replacing and reinforcing a construction structure described in Appendix 2, in the first step, of a pair of construction structures that are positioned approximately point-symmetrically, the pair that is located farthest from the center of gravity of the structure is replaced or reinforced preferentially.This makes it possible to prevent imbalances in the functions of multiple construction structures when replacing or reinforcing them, and makes it easier to ensure the functions of multiple construction structures, compared to when the pair that is located closest to the center of gravity of the structure is replaced or reinforced preferentially.

[0099] According to the method for replacing or reinforcing a construction structure described in Appendix 3, in the first step, a pair of construction structures that are positioned approximately point-symmetrically are replaced or reinforced sequentially around an axis whose central axis is the center of gravity of the structure, thereby enabling the replacement or reinforcement work of the construction structure to be carried out efficiently and making it possible to improve the workability of the replacement or reinforcement work.

[0100] According to the method for replacing or reinforcing a construction structure described in Appendix 4, after the first step, a second step is further included in which a pair of construction structures that are positioned approximately line-symmetrically among the multiple construction structures are simultaneously replaced or reinforced.Therefore, compared to when the pair of construction structures are replaced or reinforced after the first step without being influenced by their positional relationship, it is possible to suppress imbalances in the functions of the multiple construction structures when the construction structures are replaced or reinforced, and it is possible to replace or reinforce the multiple construction structures more quickly while maintaining their functions.

[0101] According to the method for replacing or reinforcing a construction structure described in Appendix 5, since the construction structure includes seismic isolation devices, seismic control devices, pillars, braces, slabs, beams, and / or piles, when a pair of seismic isolation devices, seismic control devices, pillars, braces, slabs, beams, and / or piles are replaced or reinforced simultaneously, it is possible to prevent imbalances in the functions of multiple seismic isolation devices, etc., and it is possible to quickly replace or reinforce multiple seismic isolation devices, etc. while maintaining their functions.

[0102] The method for replacing and reinforcing a construction structure described in Appendix 6 includes a third step in which the sliding bearings are replaced individually, regardless of whether they are in approximately point-symmetric or line-symmetric position relative to other seismic isolation devices. This allows the sliding bearings to be replaced without being affected by their position relative to other seismic isolation devices, making it easier to replace the sliding bearings according to the situation. [Explanation of symbols]

[0103] 1 structure 2. Flooring 2a Base floor material 4 Beam material 4a Upper foundation beam material 4b Lower foundation beam material 5. Wall materials 6 First body 7 Second body 10 Seismic isolation device 11a First seismic isolation device 11b Second seismic isolation device 11c Third seismic isolation device 11d Fourth seismic isolation device 12a 5th seismic isolation device 12b No. 6 seismic isolation device 12c No. 7 seismic isolation device 13a No. 8 seismic isolation device 13b No. 9 seismic isolation device 13c No. 10 seismic isolation device 14a 11th seismic isolation device 14b 12th seismic isolation device 15a 13th seismic isolation device 15b 14th seismic isolation device 16a 15th seismic isolation device 16b 16th seismic isolation device 16c 17th seismic isolation device 17a 18th seismic isolation device 17b 19th seismic isolation device 17c No. 20 seismic isolation device 20 Seismic isolation device body 21a Upper flange plate 21b Lower flange plate 22a Upper base plate 22b Lower base plate 23 Base 24a Upper Fixture 24b Lower Fixture CG center of gravity LG1 1st Line Duel Team LG2 2nd Line Duel Team LG3 3rd line duel team LG4 4th Line Duel Team PG1 Point 1: Couple PG2 Second Point Symmetrical Group PG3 Third Point Symmetry Group PG4 Point 4: Couple PG5 Fifth Point Symmetry Group PG6, Point 6 Symmetry Group

Claims

1. A replacement / reinforcement method for replacing or reinforcing a plurality of construction structures that are installed on a structure and are capable of bearing at least a horizontal load of the structure, comprising: A first step of simultaneously replacing or reinforcing a pair of construction structures that are positioned approximately point-symmetrically among the plurality of construction structures, The center of the approximate point symmetry is the center of gravity of the structure or a position near the center of gravity. How to replace or reinforce construction structures.

2. In the first step, of the pair of construction structures that are in a positional relationship of approximately point symmetry, the pair that is located farthest from the center of gravity of the structure is preferentially replaced or reinforced. The method for replacing or reinforcing a construction structure according to claim 1.

3. In the first step, the pair of construction structures in the substantially point-symmetrical positional relationship are sequentially replaced or reinforced around an axis having the center of gravity of the structure as a central axis. The method for replacing or reinforcing a construction structure according to claim 1 or 2.

4. The method further includes, after the first step, a second step of simultaneously replacing or reinforcing a pair of construction structures that are in a substantially line-symmetrical positional relationship among the plurality of construction structures. The method for replacing or reinforcing a construction structure according to any one of claims 1 to 3.

5. The construction structure includes a seismic isolation device, a seismic control device, a column material, a brace material, a slab material, a beam material, and / or a pile material. The method for replacing or reinforcing a construction structure according to any one of claims 1 to 4.

6. The seismic isolation device includes a sliding bearing, and a third step of individually replacing the sliding bearings without being affected by the positional relationship of the sliding bearings with other seismic isolation devices, which is approximately point symmetric or approximately line symmetric. The method for replacing or reinforcing a construction structure according to claim 5.

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