Thermal expansion and contraction following structure in seismic isolation and reinforcement frame

Abstract

When constructing a seismic reinforcement frame outside the structural plane of a main structure such as a concrete structure, parallel to the structural plane of the main structure, the support columns constituting the seismic reinforcement frame are allowed to expand and contract due to thermal effects, thereby reducing the impact of thermal expansion and contraction of the support columns on the seismic reinforcement frame. [Solution] In a structure in which a seismic damping and reinforcing frame 1 is joined to a main structure 6, the frame 1 comprises horizontally arranged support columns 2, 2 and an insulating device 5 interposed between vertically separated support members 21, 22 that constitute the support columns 2, allowing relative horizontal movement between them, a convex portion 53a is formed on either the upper end of the insulating device 5 or the lower end of the support member 22 located directly above the insulating device 5, with the convex portion 53a having a curved surface that is convex toward the other side, and a concave portion 24a is formed on the other side, with the concave portion 24a having a curved surface that is concave toward the other side, and the concave portion 24a is made to be in surface contact with the convex portion 53a in a region that includes at least the central position of the convex portion 53a on a plane.

Description

Technical Field

[0001] The present invention relates to a thermal expansion and contraction following structure in a seismic reinforcement structure that allows columns constituting the seismic reinforcement structure to expand and contract due to the influence of heat when constructing a seismic reinforcement structure for seismic reinforcement of a main structure, such as an existing or newly constructed concrete structure, parallel to the plane of the main structure outside the plane of the main structure.

Background Art

[0002] For example, for the purpose of imparting seismic performance or seismic isolation performance to a main structure such as an existing concrete structure body, there is a seismic reinforcement structure that is constructed in contact with or close to the surface of the main structure and joined to the main structure (see Patent Documents 1 to 3).

[0003] This reinforcement structure has columns arranged in the horizontal direction within the plane of the main structure outside the plane of the main structure, and connecting beams installed between adjacent column members. As shown in FIG. 3 of Patent Document 1, each column is separated into a plurality of column members in the vertical direction so as to be able to follow the inter-story deformation in the in-plane direction of the main structure.

[0004] Between the vertically separated column members, insulating devices such as laminated rubber bearings or sliding bearings with low horizontal rigidity that allow relative horizontal movement between the two while maintaining the direction of each axis are interposed. The insulating device is arranged between vertically adjacent column members so that the axis of the column member basically maintains a vertical state during relative movement between adjacent column members in the horizontal direction within the plane.

[0005] Between column members of adjacent columns with different levels, braces (damper-integrated braces) incorporating dampers that generate damping force by utilizing the relative movement between column members when the seismic reinforcement structure follows the inter-story deformation of the main structure are installed. The connecting beam is installed between adjacent column members so that the seismic reinforcement structure can follow the inter-story deformation when the main structure undergoes inter-story deformation in the horizontal direction within the plane (girder direction), and is joined to any body such as a beam or slab of the main structure in order to integrate the seismic reinforcement structure with the main structure (paragraph 0066, FIG. 11 of Patent Document 1).

[0006] When an earthquake occurs in the horizontal direction within the structural plane of the main structure, and inter-story deformation occurs in the main structure in that direction, the connecting beams of the seismic damping reinforcement frame, which are joined to the slabs of each floor of the main structure, and the support members joined to the connecting beams move relative to the main structure in accordance with the main structure (Figure 3 of Patent Document 1), and the dampers of the braces installed between adjacent support members in the horizontal direction within the structural plane expand and contract, generating a damping force and absorbing vibration energy (paragraphs 0019, 0028 of Patent Document 1).

[0007] In this case, if the seismic reinforcement frame is made of steel, the frame is located outdoors, and the columns (column members) and connecting beams may expand and contract axially due to the effects of heat from sunlight. In particular, the effects of thermal expansion and contraction are more likely to appear in summer on columns that are continuous in the axial direction across multiple floors via insulating devices, and the amount of expansion and contraction tends to accumulate more easily on the upper floors. If the amount of expansion of the columns accumulates, it may affect the effectiveness of the dampers built into the braces installed between the upper and lower sides of adjacent columns.

[0008] To mitigate the effects of thermal expansion and contraction on the support columns, the applicant has additionally proposed an axial force introduction device that applies axial compressive force to the support columns (see Patent Document 4). [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Japanese Patent Publication No. 4038472 (Claim 1, paragraphs 0013-0026, Figure 1, Figure 3) [Patent Document 2] Japanese Patent Publication No. 4585046 (Claim 1, paragraphs 0020-0035, Figures 1-4) [Patent Document 3] Japanese Patent Publication No. 4837145 (Claim 1, paragraphs 0015-0021, Figure 1, Figure 9) [Patent Document 4] Japanese Patent Publication No. 6181894 (Claim 1, paragraphs 0011-0030, Figures 1-10, Figure 14) [Overview of the project] [Problems that the invention aims to solve]

[0010] The axial force introduction device described in Patent Document 4 consists of an auxiliary column erected parallel to the support column at a position on either side of the support column, a reaction force receiving member installed on the uppermost support member and joined to the auxiliary column, and an axial force introduction member that applies a tensile force to the reaction force receiving member in a direction parallel to the axial direction of the support column. When the axial force introduction member applies a tensile force to the reaction force receiving member, it has the function of introducing a compressive force as a reaction force to the tensile force in the axial direction to the uppermost support member (Claim 1).

[0011] While this device can suppress thermal expansion of the support columns as a result of applying axial compressive force to them (paragraph 0033), it may also place excessive compressive force on the support columns (support material), potentially causing buckling of the support material. Furthermore, installing axial force introduction members on all support columns, or at the top of the main support columns, has drawbacks such as complicating the structure of the seismic reinforcement frame itself and increasing the mass of the seismic reinforcement frame.

[0012] Based on the above background, the present invention proposes a thermal expansion-following structure that can reduce the effects of thermal expansion and contraction of the support column without relying on the axial force introduction device described in Patent Document 4. [Means for solving the problem]

[0013] The thermal expansion-following structure in the seismic reinforcement frame of the invention described in claim 1 is: The main structure has a frame consisting of columns and beams, and is equipped with a plurality of support columns arranged horizontally at intervals parallel to the structural plane outside the structural plane, a connecting beam installed between adjacent support columns in the horizontal direction within the structural plane of the main structure, and a damper-integrated brace, which has a damper incorporated into the brace body, installed between adjacent support columns in the horizontal direction within the structural plane. In a seismic reinforcement frame for seismically reinforcing the main structure, the support column is separated into multiple support members in the vertical direction, an insulating device is interposed between the vertically separated support members to allow relative horizontal movement between them, and a connecting beam is erected between horizontally adjacent support members at the same level to connect these two support members, Either the upper end of the insulating device or the lower end of the support member located directly above the insulating device has a convex portion that forms a curved surface toward the other, and the other has a concave portion that forms a curved surface toward the other and has a recess that makes surface contact with the convex portion. A constituent element is that the recess is in surface contact with the convex portion in a region that includes at least the central position of the convex portion on a plane.

[0014] "Multiple support columns arranged horizontally and at intervals outside the structural plane of the main structure having a frame of columns and beams" means that multiple support columns 2 constituting the seismic damping and reinforcement frame 1 are arranged horizontally and at intervals within the structural plane parallel to the structural plane on the outdoor side of the structural plane of the main structure 6, which has a frame of columns and beams as its basic structure. The support columns 2 are mainly made of steel, although some sections may be made of steel-reinforced concrete. The main structure 6 may be newly constructed or an existing structure.

[0015] Furthermore, the "frame consisting of columns and beams" of the main structure 6 refers to the frame consisting of columns 61 and beams (girders) 62, etc., that forms a structural plane parallel to the in-plane direction, closer to the seismic reinforcement frame 1 of the main structure 6. However, the frame of the main structure 6 is constructed both in the in-plane direction and in the out-plane direction of the main structure 6. Any structure that has a frame consisting of columns 61 and beams (girders) 62 as its basic framework in both the in-plane direction and the out-plane direction is not limited to the form of the main structure 6, and includes not only building structures but also civil engineering structures such as elevated bridges.

[0016] "A connecting beam installed between adjacent columns in the horizontal direction within the structural plane of the main structure" means that a connecting beam 3 is installed between columns 2, 2 of the seismic reinforcement frame 1 adjacent to the main structure 6 in the horizontal direction within the structural plane, and the adjacent columns 2, 2 are connected to each other by the connecting beam 3.

[0017] A "damper-integrated brace, which has a damper built into the brace body and is installed between adjacent columns in the horizontal direction within the structural plane," means that a damper-integrated brace (hereinafter referred to as "brace") 4 is installed between adjacent columns 21 and 22 (22 and 23) in the horizontal direction within the structural plane, which are at different levels, and the adjacent columns 21 and 22 (22 and 23) at different levels are connected to each other. The axial ends of the brace 4 are basically connected to each column 21 and 22 so as to be rotatable around a horizontal axis that faces outward from the structural plane, and may also be connected so as to be rotatable around a horizontal axis that faces inward from the structural plane.

[0018] The damper 42 expands and contracts in response to changes in the distance between adjacent support members 21, 22 (22, 23) at different levels during earthquakes or other events, generating a damping force corresponding to the amount of relative movement or relative velocity. The brace 4 has a structure that incorporates this damper 42.

[0019] The seismic damping reinforcement frame 1, comprising support columns 2, connecting beams 3, and braces 4, is positioned at a distance from the frame of the main structure 6 in the direction outward from the structural plane, and as shown in Figure 2, the connecting beams 3, which are joined to at least one of the support columns 2, are joined to columns 61, beams 62 facing inward from the structural plane, or walls 63 connected to beams 62, etc., which are structural members of the main structure 6. Specifically, in order to transmit the horizontal shear force from the main structure 6 during inter-story deformation of the main structure 6 to the seismic damping reinforcement frame 1, the seismic damping reinforcement frame 1 is joined at the connecting beams 3 to structural members of the main structure 6 such as beams 62, slabs, walls 63, etc., of the main structure 6 via a connecting slab 7 erected between the seismic damping reinforcement frame 1 and the main structure 6, as shown in Figure 13-(a).

[0020] The connecting slab 7 is installed (constructed) between the structural members such as the beams 62, girders, and walls 63 of the main structure 6 and the connecting beam 3, and is joined to both in a state where at least the in-plane horizontal shear force can be transmitted. The connecting slab 7 also allows for the thermal expansion and contraction of each of the strut members 21 to 23 that make up the strut 2, and in order to follow the expansion and contraction, it is basically connected to the above-mentioned structural members of the main structure 6 and the seismic reinforcement structure 1 so as to be rotatable about a horizontal axis facing the in-plane horizontal direction (Claim 3). "Rotating about a horizontal axis facing the in-plane horizontal direction" can also be said to mean rotating and displacing in the out-of-plane direction.

[0021] However, when there is an out-of-plane relative displacement between the main structure 6 and the seismic reinforcement structure 1, if the connecting slab 7 can bend and deform in the out-of-plane direction and thus has a bending rigidity that allows it to follow the relative deformation between the strut members 21, 22 and the insulating device 5, it does not necessarily have to be connected so as to be rotatable about a horizontal axis. "In-plane horizontal direction" refers to the girder row direction of the main structure 6. The span direction of the main structure 6 is the out-of-plane direction.

[0022] As shown in Fig. 15, each strut 2 is separated into a plurality of strut members 21 to 23 in the vertical direction, and the connecting beam 3 is installed between the adjacent strut members 21, 21 (22, 22 (23, 23)) at the same level in the in-plane horizontal direction to connect the adjacent strut members 21, 21 (22, 22 (23, 23)) to each other. Between the strut members 21, 22 (22, 23) separated above and below each strut 2, an insulating device 5 such as a laminated rubber bearing or a sliding bearing that allows relative horizontal movement between the two is interposed.

[0023] When the connecting slab 7 is interposed between the seismic reinforcement structure 1 and the main structure 6 (Claim 3), as shown in Figs. 5 to 7, even if the seismic reinforcement structure 1 is installed from a location on the ground at a remote distance from the main structure 6 in the case of an existing building, the seismic reinforcement structure 1 effectively exhibits the effect of damping the sway of the main structure 6 during an earthquake or the like. Also, since the seismic reinforcement structure 1 is arranged at a remote location at a distance from the main structure 6, when the main structure 6 is an existing building, it becomes possible to install the seismic reinforcement structure 1 while realizing the continuous use of the main structure 6 "while using and living in it".

[0024] As a result, it is possible to easily and reliably reduce seismic response (stress and deformation) both to the above-ground portion of the existing building (main structure 6) and to the foundation portion including piles and underground beams below the ground surface. From this perspective, it can be said that this seismic reinforcement frame 1 is a highly rational and comprehensive seismic control system with multiple effects.

[0025] "Either the upper end of the insulating device or the lower end of the support member located directly above the insulating device has a convex portion that forms a curved surface that is convex toward the other side, and the other has a concave portion that forms a curved surface that is concave toward the other side and has a recess that makes surface contact with the convex portion" means, for example, that the upper end of the upper flange 51, which is part of the insulating device 5, and one of the support members 22, 23 located directly above it has a convex portion 53a (25a) that forms a curved surface that is convex toward the other side, and the other has a recess 24a (54a) that makes surface contact with the convex portion 53a (25a) of the other.

[0026] As shown in Figures 3-(a) and (b), when the protrusion 53a is formed on the upper flange 51 of the insulating device 5, the recess 24a is formed on the lower end of the support members 22 and 23. As shown in Figure 3-(c), when the protrusion 25a is formed on the lower end of the support members 22 and 23, the recess 54a is formed on the upper flange 51 of the insulating device 5. In either case, the protrusion 53a (25a) and the recess 24a (54a) may be formed directly on the upper end of the upper flange 51 of the insulating device 5 or on the lower end of the support members 22 and 23. Alternatively, as shown, a protruding member 53 (25) having the protrusion 53a (25a) and a recessed member 24 (54) having the recess 24a (54a) may be added to and fixed to the upper end of the insulating device 5 and the lower end of the support members 22 and 23.

[0027] "The concave portion is in surface contact with the convex portion in a region that includes at least the central position of the convex portion on a plane" means that surface contact occurs in a region with a certain area on the horizontal cross-section of the support members 22 and 23 when viewed in the axial direction (vertical direction), regardless of the shape of the same cross-section. The size of the region in surface contact will be corresponding to the assumed relative rotational displacement between the support members 22 and 23 and the insulating device 5.

[0028] Since the support column 2 is mainly made of steel, it expands and contracts axially due to the effects of heat from sunlight as described above. However, whether it is expanding or contracting axially, it is necessary to transmit the axial compressive force downwards. When the support members 22 and 23 are expanded from their normal state, the lower ends of the support members 22 and 23 can maintain contact with the insulating device 5 directly below them. However, if they are separated from the insulating device 5 when they contract, the support members 22 and 23 will no longer be able to transmit the compressive force to the insulating device 5.

[0029] Therefore, whether the support members 22 and 23 are contracted or extended, the convex portion 53a (25a) and concave portion 24a (54a) are always in surface contact so that the lower ends of the support members 22 and 23 remain in contact with the insulating device 5 directly below them. From the normal state, and both when the support members 22 and 23 are contracted or extended, as described later, in relation to the connecting slab 7, the lower ends of the support members 22 and 23 attempt to rotate relative to the upper end of the insulating device 5, accompanied by the horizontal deformation of the insulating device 5.

[0030] The support members 22 and 23 rotate relative to the insulating device 5 both around a horizontal axis facing inward and around a horizontal axis facing outward. Therefore, when seismic motion occurs inward in the structural plane of the seismic damping reinforcement frame 1, and at the same time the support members 22 and 23 expand and contract due to heat, the insulating device (laminated rubber bearing) 5 deforms horizontally inward in the structural plane, as shown by the dashed line in Figure 15, and relative movement occurs between adjacent support members 22 and 23 in the vertical direction, while the support members 22 and 23 can rotate relative to the insulating device 5 in the outward direction.

[0031] For example, if the lower ends of the support members 22 and 23 are joined to the upper end of the insulating device 5, it is expected that when the support members 22 and 23 contract, an axial tensile force will be applied to the insulating device 5. However, in the present invention, the support members 22 and 23 can maintain contact with the insulating device 5 while rotating around a horizontal axis in any direction relative to the insulating device 5, thereby avoiding the application of an axial tensile force to the insulating device 5 even when the support members 22 and 23 contract.

[0032] "Surface contact" basically means that both the convex portion 53a (25a) and the concave portion 24a (54a) make contact with spherical surfaces, but they do not necessarily have to be spherical, and even if both are spherical, they do not necessarily have to have the same curvature. When both are spherical, the curvature of the spherical surface of the concave portion 24a (54a) may be smaller than the curvature of the spherical surface of the convex portion 53a (25a) (the radius of curvature of the concave portion 24a (54a) may be larger than the radius of curvature of the convex portion 53a (25a)). When the seismic damping reinforcement frame 1 is viewed in the direction of the frame plane, for the support members 22, 23 and the main structure 6 to be able to rotate relative to each other, it is sufficient that at least the central part of the cross-sections of the convex portion 53a (25a) and the concave portion 24a (54a) when viewed in the direction of the frame plane is formed in a circular shape.

[0033] In all situations—normal, when the support members 22 and 23 are contracted, and when they are extended—the lower ends of the support members 22 and 23 remain in contact with the insulating device 5 directly below them. As a result, when the support members 22 and 23 are contracted and extended, the support members 22 and 23 and the insulating device 5 exhibit unique behavior according to the connection state with the connecting slab 7 described above, as follows.

[0034] Under normal conditions, that is, when no expansion or contraction occurs in the support members 22 and 23, as shown in Figures 5 and 15, the axial direction of all support members 22 and 23 is vertical, and the insulating device 5 also has its axial direction vertical, with no horizontal deformation occurring. The solid line in Figure 15 represents this state. The dashed line in Figure 15 shows the state in which the seismic damping reinforcement frame 1 deforms in accordance with the inter-story deformation of the main structure 6 in the plane direction (girder direction). When the dashed line is in place, the insulating device (laminated rubber bearing) 5 deforms horizontally, causing each support member 21-23 constituting the support 2 to move relative to each other while remaining substantially oriented vertically.

[0035] Incidentally, if the insulating device 5 is a laminated rubber bearing, the insulating device 5 itself, if it is alone, has a coefficient of thermal expansion of rubber α (= 5.8 × 10 -4 The integral of the temperature change δT is obtained by the coefficient of thermal expansion (°C), the total thickness of the rubber Σt, and the coefficient of thermal expansion (δT) in the axial direction. The coefficient of thermal expansion of steel is approximately 11.0 × 10⁻⁶. -6At approximately / °C, the axial expansion and contraction of laminated rubber per unit length is about 50 times that of steel, so it seems necessary to add the expansion and contraction of the laminated rubber to the expansion and contraction of the support members 22 and 23 when calculating the thermal expansion and contraction of support column 2.

[0036] However, when the steel (steel frame) support members 22 and 23 and the rubber of the laminated rubber bearing attempt to undergo thermal expansion in the axial direction, the rubber, which is far more flexible than the steel, is expected to be constrained by axial compressive forces from above and below the expanding support members 22 and 23. As a result, it is anticipated that the rubber will bulge horizontally, and therefore, thermal expansion will not necessarily occur in the rubber according to its axial linear expansion coefficient α. Considering this point, it can be said that it is sufficient to consider the expansion and contraction of the steel support members 22 and 23.

[0037] When the support members 22 and 23 contract axially from the normal state shown in Figures 5 and 1, where no expansion or contraction occurs in the support members 22 and 23, the total length of the support 2 (all support members 21-23) is shortened, as shown in Figures 6 and 10-(a), causing the connection point with the connecting slab 7 to slightly descend.

[0038] Here, if the connecting slab 7 can be rotationally deformed relative to the main structure 6 and the support members 22 and 23 as described above, then as shown in Figure 10-(a), as the connection point with the connecting slab 7 descends, the lower ends of the support members 22 and 23 will attempt to move inward from their original position due to the rotation of the connecting slab 7 relative to the main structure 6, and the entire support members 22 and 23 will attempt to rotate around the connection point with the connecting slab 7.

[0039] As a result of the rotational displacement of the support members 22 and 23, the upper ends of the same support members 22 and 23 move from their original position towards the outdoors. Therefore, if laminated rubber bearings are used as the insulating device 5, the insulating device 5 undergoes horizontal deformation such that its upper end moves towards the indoor side and its lower end moves towards the outdoors side. Figures 6 and 11 show what happens at this time.

[0040] Conversely, when the support members 22 and 23 are extended axially from the state shown in Figure 5, as shown in Figures 7 and 10-(b), the entire length of the support 2 (all support members 21-23) is extended, causing the connection point with the connecting slab 7 to rise slightly, and the entire support members 22 and 23 attempt to rotate around the connection point with the connecting slab 7. Consequently, the lower ends of the support members 22 and 23 move outward from their original position, and the upper ends of the same support members 22 and 23 move inward from their original position, causing the laminated rubber to undergo horizontal deformation, with the upper end moving outward and the lower end moving inward. Figures 7 and 12 show this situation. When the support members 22 and 23 are extended axially, slight bending deformation may also occur in the support members 22 and 23 as a whole.

[0041] Even during temperature increases and decreases from normal conditions when the support members 22 and 23 are not expanding or contracting, the convex portion 53a (25a) and concave portion 24a (54a) maintain surface contact, allowing the support members 22 and 23 to rotate relative to the insulating device 5 in any direction. Therefore, it is possible to maintain contact between the lower ends of the support members 22 and 23 and the upper end of the insulating device 5 without applying axial tensile and compressive forces to the support members 22 and 23 as they expand and contract.

[0042] As a result, excessive compressive force is not applied to the support members 22 and 23, thus eliminating the possibility of buckling in the support members 22 and 23. Furthermore, by eliminating the need to install the axial force introduction device described in Patent Document 4, the problems of increased structural complexity of the seismic reinforcement frame itself and increased mass of the seismic reinforcement frame are avoided.

[0043] As shown in Figures 3-(a) and (b), the portion surrounding the recess 24a (54a) formed on either the upper end of the insulating device 5 or the lower end of the support members 22 and 23 protrudes relatively toward the convex portion 53a (25a) on the other side. Therefore, as shown in Figure 4, when the support members 22 and 23 are rotated relative to the insulating device (laminated rubber bearing) 5, the portion surrounding the recess 24a (54a) may come into contact with the convex member 53 (25), which is the portion where the convex portion 53a (25a) is formed, or the portion surrounding the part to which the convex member 53 (25) is joined.

[0044] For example, in the case shown in Figures 3-(a), (b), and 4, a convex member 53 with a convex portion 53a is integrally joined to the upper surface of a joining plate 52 which is joined to the upper flange 51 of the insulating device 5, and a recessed member 24 with a recessed portion 24a is integrally joined to the lower ends of the support members 22 and 23 directly above it. Here, the entire surface of the convex portion 53a and the recessed portion 24a is formed as a sphere, but when the support members 22 and 23 are rotated relative to the insulating device 5, the support members 22 and 23 attempt to rotate around the center of curvature O of the sphere shown in Figure 4. At that time, the outer peripheral portion (edge ​​portion) of the recessed member 24 may come into contact with (collide with) the outer peripheral portion (edge ​​portion) of the joining plate 52.

[0045] As shown in Figure 4, a clearance c1 is secured between the recessed material 24 and the connecting plate 52 to allow for a certain degree of rotational displacement of the support members 22 and 23. Here, the case where only the clearance c1 is secured between the recessed material 24 and the connecting plate 52 is shown by the dashed line.

[0046] Here, the rotation angle θ1 until the edge of the recessed material 24 contacts the edge of the connecting plate 52 is the angle between the straight line L1 connecting the lower edge of the recessed material 24 and the center of curvature O of the sphere (surface of the convex portion 53a), and the straight line L2 connecting the upper edge of the connecting plate 52 and the center of curvature O of the sphere. If this angle θ1 is less than the relative rotational displacement, or in other words, the relative rotation angle (inter-story drift angle), between the expected support members 22 and 23 and the insulating device 5, the recessed material 24 and the connecting plate 52 may hinder the rotation of the support members 22 and 23 relative to the insulating device 5.

[0047] Therefore, the upper end of the insulating device 5 and the lower end of the support members 21 and 22 located directly above the insulating device 5 are integrated, for example, in the example in Figure 4, a convex member 53(25) with a convex portion 53a(25a) formed on the upper end of the insulating device 5, and a recessed member 24(54) with a recess 24a(54a) formed on the lower end of the other support member 21 and 22 is integrated. Then, an additional clearance c2 is secured in the vertical direction (in the part far from the center on the plane) between the surface of the recessed member 24(54) on the side of the one of the aforementioned (insulating device 5) and the surface of the one of the aforementioned (insulating device 5) on the side of the recessed member 24(54) (in the part far from the center on the plane), which allows for the maximum relative rotational displacement expected between the support members 22 and 23 and the insulating device 5 (Claim 2), thereby preventing the rotation of the support members 22 and 23 relative to the insulating device 5.

[0048] "At least" means that, in the example of Figure 4 in which the convex member 53 is joined to the joining plate 52 (insulating device 5), it is sufficient that an additional clearance c2 be secured between the outer peripheral portion (edge ​​portion) of the lower surface of the recessed member 24 and the outer peripheral portion (edge ​​portion) of the upper surface of the joining plate 52. Because it is "at least," the additional clearance c2 may also be formed from the outer peripheral portion to the inner peripheral portion of the recessed member 24 and the joining plate 52. "Additional clearance c2" refers to the gap excluding the above clearance c1.

[0049] In the example shown in Figure 3-(c), where the convex member 25 is joined to the lower ends of the support members 22 and 23, an additional clearance c2 is secured between the outer peripheral portion (edge ​​portion) of the upper surface (the surface on the support members 22 and 23 side) of the recessed member 54 joined to the joining plate 52 and the outer peripheral portion (edge ​​portion) of the lower surface (the surface on the recessed member 54 side) of the support members 22 and 23. In Figure 3-(c), the case where the additional clearance c2 is secured is shown by a dashed line.

[0050] In the example shown in Figure 4, where an additional clearance c2 is secured between the outer peripheral portion (edge ​​portion) of the lower surface of the recessed material 24 and the outer peripheral portion (edge ​​portion) of the upper surface of the joining plate 52, the rotation angle θ2 until the edge portion of the recessed material 24 contacts the edge portion of the joining plate 52 is the angle between the straight line L3 connecting the edge portion of the lower surface of the recessed material 24 and the center of curvature O of the spherical surface (surface of the convex portion 53a), and the straight line L2 connecting the edge portion of the upper surface of the joining plate 52 and the center of curvature O of the spherical surface. Figure 4 shows an example where the shape of the lower surface of the recessed material 24 is formed along the straight line L3.

[0051] If the connecting slab 7 is capable of rotational displacement in the out-of-plane direction relative to the main structure 6 and the seismic damping reinforcement frame 1 (Claim 3), then if the surface of the convex portion 53a (25a) (the surface on the concave portion 24a (54a) side) and the surface of the concave portion 24a (54a) (the surface on the convex portion 53a (25a) side) are in direct or indirect spherical surface contact within the range in which the connecting slab 7 is capable of rotational displacement relative to the main structure 6 and the seismic damping reinforcement frame 1 (Claim 4), then the stability of the connecting slab 7 when it is rotated relative to the main structure 6 and the seismic damping reinforcement frame 1 while the convex portion 53a (25a) and the concave portion 24a (54a) are in surface contact is increased.

[0052] "Within the range in which the connecting slab can rotate relative to the main structure and the seismic reinforcement frame" means that the connecting slab 7 can rotate relative to the main structure 6 and the seismic reinforcement frame 1 up to the maximum rotational displacement expected around the horizontal axis oriented in the horizontal direction within the frame plane, due to the thermal expansion and contraction of the support members 22 and 23. "Spherical surface contact" means that the surface of the convex portion 53a (25a) and the surface of the concave portion 24a (54a) are in contact with each other on a spherical surface with substantially the same curvature.

[0053] In this case, until the connecting slab 7 rotates relative to the main structure 6 and the seismic damping reinforcement frame 1 to the maximum expected rotational displacement, the surfaces of the convex portion 53a (25a) and the concave portion 24a (54a) remain in spherical contact. This prevents any play (gap) from occurring between the convex portion 53a (25a) and the concave portion 24a (54a), thus improving the stability of the connecting slab 7 relative to the main structure 6 and the seismic damping reinforcement frame 1 in the displaced state.

[0054] "Indirect surface contact" means that, as shown in Figure 4, the low friction material 10 is interposed between the surface of the convex portion 53a (25a) and the surface of the concave portion 24a (54a) (Claim 5). The low friction material 10 may be a solid such as polytetrafluoroethylene resin or a bearing, or a fluid such as oil (lubricant).

[0055] When the low-friction material 10 is interposed between the surface of the convex portion 53a (25a) and the surface of the concave portion 24a (54a), the convex portion 53a (25a) and the concave portion 24a (54a) become more easily rotationally displaced relative to each other. As a result, even with slight expansion and contraction of the support members 22 and 23, the convex portion 53a (25a) and the concave portion 24a (54a) can easily rotate without resistance (friction), and smooth relative displacement is achieved without generating unnecessary stress on the support members 22 and 23 and the insulating device 5. [Effects of the Invention]

[0056] In a seismic-damping and reinforcing frame structure comprising horizontally arranged support columns and an insulating device interposed between the vertically separated support members that constitute the columns, thereby allowing relative horizontal movement between them, a convex portion is formed on either the upper end of the insulating device or the lower end of the support member located directly above the insulating device, with the convex portion being curved toward the other side, and a concave portion is formed on the other side, with the concave portion being curved toward the one side, and the concave portion is made to be in surface contact with the convex portion in a region that includes at least the central position of the convex portion on its plane. As a result, rotational displacement relative to the insulating device can be generated in the support member, both during temperature increases and decreases from normal conditions.

[0057] As a result, it becomes possible to maintain contact between the lower end of the support member and the upper end of the insulating device without applying axial tensile and compressive forces to the support member as it expands and contracts, thus preventing excessive compressive forces from being applied to the support member and eliminating the possibility of buckling. [Brief explanation of the drawing]

[0058] [Figure 1]This perspective view shows the normal configuration, where the seismic damping and reinforcing frame is positioned outside the structural plane of the main structure, and the connecting beams of the seismic damping and reinforcing frame are joined to the beams of the main structure. [Figure 2] Figure 1 is a perspective view showing how the connecting beams of the seismic reinforcement frame are connected to the beams (walls) of the main structure via connecting slabs. [Figure 3] (a) is a schematic elevation view showing an example of a combination of recess and protrusion when a protrusion is formed on the upper surface of the joint plate on the upper flange of the insulating device and a recess is formed at the lower end of the support member; (b) is a perspective view showing a part of the recess member in (a) cut out; and (c) is a schematic elevation view showing an example of a combination of recess and protrusion when a protrusion is formed at the lower end of the support member and a recess is formed in the insulating device. [Figure 4] Figure 3-(a) is a partial cross-sectional elevation view showing an example where a notch is formed on the lower surface near the outer circumference of the recessed material at the lower end of the support member, thereby securing an additional clearance to allow rotational displacement of the support member, in addition to the clearance between it and the upper surface of the bonding plate of the insulating device. [Figure 5] This is a longitudinal cross-sectional view taken in the direction of the structural plane, showing the relationship between the main structure and the seismic reinforcement frame in a normal state where no thermal expansion or contraction occurs in the support members. [Figure 6] This is a longitudinal cross-sectional view taken in the plane of the structure, showing the relationship between the main structure and the seismic reinforcement frame when the support members contract in the axial direction. [Figure 7] This is a longitudinal cross-sectional view taken in the plane of the structure, showing the relationship between the main structure and the seismic reinforcement frame when the support members are extended in the axial direction. [Figure 8] (a) is an enlarged view of the connecting slab and its widthwise sides in the state shown in Figure 5, (b) is an enlarged view of the connecting slab and its widthwise sides in the state shown in Figure 6, and (c) is an enlarged view of the connecting slab and its widthwise sides in the state shown in Figure 7. [Figure 9] This is a cross-sectional view along line xx in Figure 8-(a). [Figure 10] (a) is a schematic diagram that schematically exaggerates the situation in Figure 6, and (b) is a schematic diagram that schematically exaggerates the situation in Figure 7. [Figure 11]Figure 6 is a perspective view showing the entire seismic reinforcement frame in the situation described (when the support members are contracting). [Figure 12] Figure 7 is a perspective view showing the entire seismic reinforcement frame in the situation shown (when the support columns are extended). [Figure 13] (a) is a longitudinal section showing a specific example of connection of the connecting slab to the structure, (b) is a longitudinal section showing the state when the seismic damping reinforcement frame and the main structure rotate outward in the direction of the structural plane, and (c) is a partially enlarged view of (b), which is a longitudinal section showing the state when the main structure rotates relative to the connecting slab. [Figure 14] (a) is a longitudinal section view showing the joint between the beam (wall) and connecting slab of the main structure in Figure 8-(a) under the conditions shown in Figure 5 (normal state), (b) is a longitudinal section view showing the joint between the beam (wall) and connecting slab in Figure 8-(b) under the conditions shown in Figure 6 (contraction), and (c) is a longitudinal section view showing the joint between the beam (wall) and connecting slab in Figure 8-(c) under the conditions shown in Figure 7 (extension). [Figure 15] This is an elevation view (schematic diagram) showing what happens when inter-story deformation occurs in the main structure and the support members above the lowest story of the seismic damping reinforcement frame move horizontally relative to each other, in a seismic damping reinforcement frame consisting of three support members. [Modes for carrying out the invention]

[0059] Figure 1 shows an example of a structure with a seismic damping reinforcement frame 1, in which a seismic damping reinforcement frame 1 is constructed outside the frame plane of a main structure 6, which has a frame of columns and beams in both the in-plane and out-plane directions, with multiple support columns 2, 2 arranged horizontally at intervals parallel to the frame plane, a connecting beam 3 installed between adjacent support columns 2, 2 in the horizontal direction within the frame plane of the main structure 6, and damper-integrated braces (hereinafter referred to as braces) 4 installed between adjacent support columns 2, 2 in the horizontal direction within the frame plane. The braces 4 have a form in which a damper 42 is incorporated into the brace body 41. Figure 2 shows an example of connection between the main structure 6 and the seismic damping reinforcement frame 1.

[0060] As shown in Figure 15, the support column 2 is separated into multiple support members 21-23 in the vertical direction, and an insulating device 5 that allows relative horizontal movement between the vertically separated support members 21, 22 (22, 23) is interposed between them, connecting the vertically adjacent support members 21, 22 (22, 23) to each other. A connecting beam 3 is erected between support members 21, 21 (22, 22 (23, 23)) that are adjacent horizontally in the same level within the structure, and a brace 4 is erected between support members 21, 22 (22, 23) that are adjacent horizontally in the structure but at different levels.

[0061] A seismic damping and reinforcing frame 1, consisting of a support column 2 with an insulating device 5 interposed, a connecting beam 3, and a brace 4, is positioned at a distance from the frame of the main structure 6 and is joined to structural members of the main structure 6, such as columns 61, beams 62, or walls 63 connected to beams 62.

[0062] As shown in Figures 2 and 13-(a), a connecting slab 7 spanning both is installed between the connecting beam 3 of the seismic damping reinforcement frame 1 and structural members such as beams 62, walls 63, and slabs of the main structure 6, and is joined in such a way that at least horizontal shear force can be transmitted to each. "At least" means that in some cases only horizontal shear force between the main structure 6 and the seismic damping reinforcement frame 1 can be transmitted, while in other cases, bending moment around either side or vertical load can also be transmitted in addition to horizontal shear force.

[0063] The connecting slab 7 is joined to the main structure 6 and the seismic reinforcement frame 1 so as to be rotatable around a horizontal axis that faces the horizontal direction within the frame, except in cases where its own low out-of-plane bending stiffness can follow the relative rotational deformation (inter-story deformation) in opposing directions (out-of-frame direction) between the main structure 6 and the seismic reinforcement frame 1 as shown in Figure 13-(b).

[0064] In that case, the connecting slab 7 is specifically embedded between the connecting slab 7 and the beam 62, or the wall 63 connected to the beam 62, and between the connecting slab 7 and the connecting beam 3, as shown in Figures 5 and 8-(a), and is joined to the main structure 6 and the seismic reinforcement frame 1 via anchoring devices 8 that enable the transmission of shear force between them. As shown in Figures 8 and 9, when the connecting slab 7 and the connecting beam 3 are made of reinforced concrete, main reinforcement bars to ensure the necessary strength and main reinforcement restraint bars (shear reinforcement bars) to restrain them are arranged inside each.

[0065] The anchoring device 8 shown in Figures 8 and 13 consists of an anchoring member 81 that spans both members to be joined, and a rod-shaped anchor 82 that penetrates the anchoring member and is anchored to both sides. In this case, the sides on both sides in the width direction (outside the structural plane) of the connecting slab 7 and the main structure 6 and seismic reinforcement frame 1 are basically separated over the entire thickness of the connecting slab 3 as shown in Figure 14, and a filler material 9 is interposed between each of these separated parts. The filler material 9 can be made of foamed plastics such as foamed polyurethane or foamed polyethylene, which are able to contract when subjected to compressive force and return to their original state when the compressive force is released, or a sponge-like material.

[0066] As shown in Figure 14, the anchoring device 8 is positioned across at least one of the spaces between the connecting slab 7 and the main structure 6, and between the connecting slab 7 and the seismic damping reinforcement frame 1. It consists of an anchoring member 81 having a through hole 81c that penetrates in the thickness direction in part, and a rod-shaped anchor 82 that is inserted through the through hole 81c of the anchoring member 81 and anchored to the connecting slab 7 and the main structure 6, and to the connecting slab 7 and the seismic damping reinforcement frame 1, and is bendable and deformable. The anchoring member 81 has an anchoring portion 81a that is anchored to either the connecting slab 8 and the main structure 6, or the connecting slab 8 and the seismic damping reinforcement frame 1, and a main body portion 81b that is embedded (anchored) in the other, has the through hole 81c formed for the insertion of the anchor 82, and has a shape that protrudes toward the other side.

[0067] When the connecting slab 7 attempts to rotate around a horizontal axis oriented horizontally within the structural plane relative to the main structure 6 and the seismic damping reinforcement frame 1, as shown in Figures 13-(b) and (c), the anchor 82 undergoes bending deformation and the filling material 9 located on the compression side is compressed, causing the connecting slab 7 to rotate relative to the main structure 6 and the seismic damping reinforcement frame 1. This rotational deformation occurs not only during thermal expansion and contraction of the support columns 2, but also when there is seismic motion in the direction outside the structural plane. During seismic motion, the bending deformation of the anchor 82 and the compression of the filling material 9 alternate between the state shown in Figure 13-(b) and the deformation state on the opposite side.

[0068] As shown in Figures 3-(a) to 3-(c), for example, the upper end of the upper flange 51, which is part of the insulating device 5, and the lower end of the support members 22 and 23 located directly above the insulating device 5, each have a convex portion 53a (25a) that forms a curved surface that is convex toward the other, and the other has a concave curved surface that is concave toward the other and has a recess 24a (54a) that is in surface contact with the convex portion 53a (25a). Figures 3-(a) and 3-(b) show an example in which the convex portion 53a is formed on the upper end of the upper flange 51 and the recess 24a is formed on the lower end of the support members 22 and 23, while Figure 3-(c) shows an example in which the convex portion 25a is formed on the lower end of the support members 22 and 23 and the recess 54a is formed on the upper end of the upper flange 51.

[0069] In the example shown in Figures 3-(a) and (b), a convex member 53 with a convex portion 53a is integrally joined to the upper flange 51 of the insulating device 5, and a recessed member 24 with a recessed portion 24a is integrally joined to the lower ends of the support members 22 and 23, with the convex portion 53a in surface contact with the recessed portion 24a. When the convex member 53 is placed on the upper flange 51, the convex member 53 is basically placed on a joining plate 52 that overlaps and is joined directly or indirectly on the upper flange 51, and is joined to the joining plate 52.

[0070] In this example, the entire surfaces of the recess 24a and the protrusion 53a are formed as spherical surfaces with almost the same curvature, and the protrusion 53a is fitted into the recess 24a to bring them into surface contact. However, it is not necessarily required that the entire surface of the protrusion 53a be in surface contact with the recess 24a, nor is it necessary that the entire surfaces of the recess 24a and the protrusion 53a be spherical. In the examples of Figures 3-(a) and (b), the recess material 24 is formed in a block (lump) shape, but the recess material 24 can also be manufactured by assembling plates in a three-dimensional manner. "Spherical surfaces with almost the same curvature" refers to a spherical surface in which the surface of the protrusion 53a and the surface of the recess 24a remain in surface contact with each other within a range in which they can rotate and deform each other around the center of the sphere.

[0071] In the example shown in Figure 3-(c), a convex member 53 with a protrusion 53a is integrally joined to the lower ends of the support members 22 and 23, and a recessed member 24 with a recess 24a is integrally joined to the upper flange 51 (joining plate 52) of the insulating device 5. In this example as well, the recessed member 24 may be assembled three-dimensionally from a plate.

[0072] As shown in Figures 3-(a) and (b), when the recess member 24 is joined to the lower ends of the support members 22 and 23, and the joining plate 52 is joined to the upper flange 51 of the insulating device 5, a clearance c1 is secured vertically between the lower surface of the recess member 24 and the upper surface of the joining plate 52 to allow rotational displacement of the support member 21 (22) located directly above the insulating device 5 relative to the insulating device 5, as shown in Figure 4. The clearance c1 only needs to be secured mainly in the peripheral portion (edge ​​portion) of the lower surface of the recess member 24. In Figure 4, the dashed line shows the situation when only the clearance c1 is secured between the lower surface of the recess member 24 and the upper surface of the joining plate 52.

[0073] In the example shown by the dashed line in Figure 4, the angle at which the support member 21 (recessed member 24) can rotate relative to the connecting plate 52 is θ1 as shown in Figure 4. θ1 is the angle between the straight line L1 connecting the center (center of curvature) O of the surface (sphere) of the recess 24a and the convex portion 53a, which is the rotation center of the support member 21 (recessed member 24), and the edge of the lower surface of the recessed member 24, and the straight line L2 connecting the center O and the edge of the upper surface of the connecting plate 52, and is determined by the clearance distance (height) c1.

[0074] If this clearance c1 may limit the amount of rotational displacement of the support member 21 (recessed member 24) relative to the insulating device 5 (joint plate 52), an additional vertical clearance c2 is secured in the peripheral portion (the portion far from the center on the plane) at least from the center on the plane between the surface of the recessed member 24 (recess 24a) on the joint plate 52 (protrusion 53a) side and the surface of the joint plate 52 (protrusion 53a) on the recessed member 24 (recess 24a) side (Claim 2). The additional clearance c2 is secured by reducing the height of at least the portion near the outer periphery of the surface (bottom surface) of the recessed member 24 on the insulating device 5 side, and by eliminating this portion near the outer periphery, thereby allowing the maximum relative rotational displacement expected between the support members 22, 23 and the insulating device 5.

[0075] In the example shown by the solid line in Figure 4, the additional clearance c2 ensures that the angle at which the support member 21 (recessed member 24) can rotate relative to the joining plate 52 is θ2. θ2 is the angle between the straight line L3 connecting the center (center of curvature) O and the surface (bottom surface) of the recessed member 24 on the insulating device 5 side, and the straight line L2 connecting the center O and the edge of the upper surface of the joining plate 52.

[0076] Figure 4 also shows an example (Claim 4) in which the surface of the convex portion 53a (25a) and the surface of the concave portion 24a (54a) are in direct or indirect surface contact on a spherical surface with substantially the same curvature within a range in which the connecting slab 7 can rotate relative to the main structure 6 and the seismic damping reinforcement frame 1. Figure 4 particularly shows an example (Claim 5) in which a low-friction material 10 such as a polytetrafluoroethylene sheet is interposed between the surface of the convex portion 53a (25a) and the surface of the concave portion 24a (54a). The surface of the convex portion 53a (25a) and the surface of the concave portion 24a (54a) are in spherical contact, and in particular the interposition of the low-friction material 10 between the two surfaces enables stability and smooth rotational displacement.

[0077] Figures 1 and 5 show the connection between the seismic damping reinforcement frame 1 and the main structure 6 under normal conditions when no thermal expansion or contraction occurs in the support members 22 and 23. In this state, the axes of all support members 22 and 23 are oriented vertically, and the center in the thickness direction of the connecting slab 7 is oriented horizontally.

[0078] Figure 10-(a) shows the situation when the support members 22 and 23 contract in the axial direction from the state shown in Figures 1 and 5. As mentioned above, when the insulating device 5 is a laminated rubber bearing and the insulating device 5 is used alone, it is expected that the rubber will expand and contract in accordance with the linear expansion coefficient α of the rubber itself, in response to changes in ambient temperature. However, since the insulating device 5 is placed in a state where it is subjected to compressive force (clamped) by the support members 22 and 23 from both sides in the axial direction (vertical direction), there is little need to consider expansion due to temperature rise, and it is sufficient to consider the expansion and contraction of the steel support members 22 and 23 due to temperature changes.

[0079] When the support members 22 and 23 contract axially from the state shown in Figure 5, the main structure 6 and the seismic reinforcement frame 1 attempt to deform relative to each other in the out-of-plane direction (opposing direction), as shown in Figure 13-(b). If the connecting slab 7 can rotate relative to both the main structure 6 and the seismic reinforcement frame 1, as shown in Figure 10-(a), the connection point with the connecting slab 7 will attempt to slightly descend due to the contraction (shortening) of the support members 22 and 23, and consequently, the lower ends of the support members 22 and 23 will attempt to move from their original position towards the interior (towards the main structure 6).

[0080] As a result, the support members 22 and 23 attempt to rotate outward around the connection point with the connecting slab 7, causing the upper ends of the support members 22 and 23 to move outward from their original position and the lower ends to move inward. The insulating device (laminated rubber bearing) 5 undergoes horizontal deformation, as shown in Figures 6 and 11, with its upper end moving inward and its lower end moving outward. The same thing happens when the connecting slab 7 undergoes bending deformation in response to the relative deformation of the main structure 6 and the seismic reinforcement frame 1 outward.

[0081] On the other hand, when the support members 22 and 23 extend axially from the state shown in Figure 5, as shown in Figure 10-(b), the extension of the support members 22 and 23 causes the connection point with the connecting slab 7 to rise slightly, and the support members 22 and 23 attempt to rotate outward around the connection point with the connecting slab 7. Consequently, the lower ends of the support members 22 and 23 move outward from their original position, and the upper ends of the support members 22 and 23 attempt to move inward from their original position. As a result, the insulating device (laminated rubber bearing) 5 undergoes horizontal deformation, as shown in Figures 7 and 12, with the upper end moving outward and the lower end moving inward.

[0082] Figure 8-(a) shows the normal connection state between the connecting slab 7 and the beam 62 or wall 63 of the main structure 6, and between the connecting slab 7 and the connecting beam 3 of the seismic damping reinforcement frame 1. Here, as described above, the connecting slab 7 and the beam 62 (wall 63), and the connecting slab 7 and the connecting beam 3 are connected via an anchoring device 8 that spans both, but the connection method is not limited. Figure 14-(a) shows an enlarged view of the connection portion between the connecting slab 7 and the beam 62 or wall 63 of the main structure 6 in Figure 8-(a) (normal state). Figure 9 shows a horizontal cross-section of the portion including the entire connecting slab 7 in Figure 8-(a).

[0083] When the support members 22 and 23 contract axially from the normal state shown in Figure 8-(a), the lower ends of the support members 22 and 23 attempt to move inward, as shown in Figures 8-(b) and 10-(a). As a result, the connecting slab 7 descends on the side of the support members 22 and 23, and the filler material 9 located below the anchoring member 81 is compressed between the connecting slab 7 and the main structure 6, as shown in Figure 14-(b). The filler material 9 located above the anchoring member 81 either maintains its original shape or recovers from its contracted state and expands. When the filler material 9 recovers, a gap may be created between the filler material 9 above the anchoring member 81 and the connecting slab 7, or between it and the beam 62 (wall 63).

[0084] When the support members 22 and 23 extend axially from the state shown in Figure 8-(a), the lower ends of the support members 22 and 23 attempt to move towards the outside, as shown in Figures 8-(c) and 10-(b). As a result, the connecting slab 7 rises on the side of the support members 22 and 23. Therefore, between the connecting slab 7 and the main structure 6, the filler 9 located above the anchoring member 81 is compressed, as shown in Figure 14-(c), while the filler 9 located below the anchoring member 81 maintains its original shape or recovers from its contracted state and expands. When the filler 9 recovers, a gap may be created between the filler 9 below the anchoring member 81 and the connecting slab 7, or between it and the beam 62 (wall 63). [Explanation of Symbols]

[0085] 1...Seismic control reinforcement frame, 2...support column, 21, 22, 23...support column material, 24...recess material, 24a...recess, 25...convex member, 25a...convex part, 3... Connecting beam, 4... Damper-integrated brace, 41... Brace body, 42... Damper, 5...Insulating device, 51...Upper flange, 52...Joint plate, 53...Convex member, 53a...Convex part, 54...Concave member, 54a...Concave, 6...Main structure, 61...Column, 62...Beam, 63...Wall, 7... Connecting slab 8... Fixing device, 81... Fixing member, 81a... Fixing section, 81b... Main body section, 81c... Through hole, 82... Anchor, 9...Filling material, 10...Low friction material, c1... Clearance, c2... Additional clearance.

Claims

1. The main structure has a frame consisting of columns and beams, and is equipped with multiple support columns arranged horizontally at intervals parallel to the structural plane outside the structural plane, connecting beams installed between adjacent support columns in the horizontal direction within the structural plane of the main structure, and damper-integrated braces, which have dampers incorporated into the brace body, installed between adjacent support columns in the horizontal direction within the structural plane. In a structure with a seismic damping reinforcement frame for seismically damping the main structure, the support column is separated into multiple support members in the vertical direction, an insulating device is interposed between the vertically separated support members to allow relative horizontal movement between them, and a connecting beam is erected between horizontally adjacent support members at the same level to connect these two support members, the seismic damping reinforcement frame for seismically damping the main structure is positioned at a distance from the frame of the main structure and joined to the main structure, Either the upper end of the insulating device or the lower end of the support member located directly above the insulating device has a convex portion that forms a curved surface toward the other, and the other has a concave portion that forms a curved surface toward the other and has a recess that makes surface contact with the convex portion. A thermal expansion and contraction-following structure in a seismic damping and reinforcement frame, characterized in that the recess is in surface contact with the convex portion in a region that includes at least the central position of the convex portion on a plane.

2. The convex member having the protrusion formed thereon is integrated with either the upper end of the insulating device or the lower end of the support member located directly above the insulating device, and the recessed member having the recess formed thereon is integrated with either the upper end of the insulating device or the lower end of the support member located directly above the insulating device, The thermal expansion-following structure in the seismic reinforcement frame according to claim 1, characterized in that an additional clearance is secured in the vertical direction between one of the surfaces of the peripheral portion of the recessed material, at least a distance from the center on the plane, and the one of the surfaces on the recessed material side, allowing for the maximum relative rotational displacement expected between the support member and the insulating device.

3. A thermal expansion-following structure in a seismic reinforcement frame according to claim 1 or 2, characterized in that a connecting slab is erected between the main structure and the seismic reinforcement frame, and the two are rotatably joined to each other around a horizontal axis facing the horizontal direction within the frame plane.

4. The thermal expansion-following structure in the seismic reinforcement frame according to claim 3, characterized in that the surface of the convex portion and the surface of the concave portion are in direct or indirect spherical surface contact with respect to the main structure and the seismic reinforcement frame within a range in which the connecting slab can be rotated relative to the main structure and the seismic reinforcement frame.

5. The thermal expansion-following structure in the seismic reinforcement frame according to claim 4, characterized in that a low-friction material is interposed between the surface of the convex portion and the surface of the concave portion.

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