JP3197015U - Two-dimensional connection structure of seismic isolation bearing for base isolation floor - Google Patents

Abstract

An object of the present invention is to provide a base-isolated floor by arranging a plurality of base-isolated bearings with high accuracy in a two-dimensional manner, exhibiting high-performance base-isolating performance, and simplifying the addition of base-isolated bearings. The two-dimensional connection structure is provided. SOLUTION: Four seismic isolation bearings 1A to 1D each including a lower base 2, an upper base 4 having the same dimensions as the lower base, and a base base and a base isolation element disposed between the upper base, A seismic isolation bearing for seismic isolation floor that has 5 spaces between seismic isolation bearings adjacent to each other perpendicular to this, and is separated and connected in a two-dimensional array to form a seismic isolation floor area on the upper surface. In order to eliminate the error in the distance between the seismic isolation bearings and to install them accurately, the lower frames 21 and the lower joints 31 are used to position each of the lower bases with high accuracy. Each side piece 3 and 5 inside each upper frame is connected by the lower bridge 41 and the upper bridge, and the end faces of each side piece 5 of the upper frame are connected by a required number of upper skirts. The upper cover plate is placed in the space portion through the upper cover plate receiving piece located at each corner of the space portion. And wear, the entire upper surface constitutes a flat MenShinyuka. [Selection] Figure 14

Description

  The present invention relates to a two-dimensional connection structure of base-isolated bearings for base-isolated floors, and more specifically, eliminates an error in mutual spacing (interval gaps) in a plurality of base-isolated bearings constituting the base-isolated floor. A structure for accurately installing seismic isolation bearings, that is, seismic isolation that can easily realize a seismic isolation floor of a desired area while positioning multiple seismic isolation bearings constituting the seismic isolation floor with high precision This is related to the two-dimensional connection structure of seismic isolation bearings for floors.

  On OA floors where computers and related equipment are installed, and floors where various precision devices are installed, seismic isolation floors are placed on those floors to prevent seismic disasters for seismic isolation objects such as computers and various precision devices. There is a strong demand for prevention.

  As such a seismic isolation floor, usually, a plurality of seismic isolation bearings are two-dimensionally arranged in the front, rear, left, and right directions, and the plurality of seismic isolation bearings are linked so as to exhibit seismic isolation performance.

  In Patent Document 1, as a technique related to the present invention, M × N is arranged in M rows with an X-axis separation space interposed therebetween and arranged in N rows with a Y-axis separation space interposed therebetween. A seismic isolation body, an X-axis gantry coupling member disposed in each of the X-axis separation spaces, and a Y-axis gantry coupling member disposed in each of the Y-axis separation spaces. The main body has a lower base, a carriage, and an upper base, and the X-axis upper base connecting member extends in the X-axis direction, and a pair of ends of the X-axis upper base long member A pair of X-axis upper frame coupling members coupled to the upper frame of the pair of seismic isolation main bodies sandwiching the X-axis separation space, and the Y-axis upper frame coupling member extending in the Y-axis direction. A pair of ends of the upper frame long member and the Y-axis upper frame long member are coupled to the upper frame of the pair of seismic isolation bodies sandwiching the Y-axis separation space, respectively. MenShinyuka structure arrangement is disclosed having a pair of Y on the axis gantry coupling member that.

  However, in the case of the base-isolated floor structure disclosed in Patent Document 1, each base-isolated main body base that sandwiches the X-axis separated space and each base-isolated main body base that sandwiches the Y-axis spaced space each have a pair of X It is the structure which couple | bonds using an on-axis mount coupling member, and a pair of Y-axis mount mounting member, In the seismic isolation floor structure of this patent document 1, accumulation of the minute and minute error of each seismic isolation main body It is not possible to eliminate the error, and the error (interval gap) between each seismic isolation main body is eliminated, and each seismic isolation main body is positioned accurately and connected with high accuracy. It is estimated that it is difficult to do.

JP 2010-275799 A

  The problem to be solved by the present invention is that two or more seismic isolation bearings are separated and arranged two-dimensionally with high precision positioning in the front and rear and left and right directions to form a seismic isolation floor. Eliminates the error in the mutual spacing (separation of the gap) in the seismic bearings, accurately installs each seismic isolation bearing and demonstrates the high performance seismic isolation performance by linking multiple seismic isolation bearings reliably. The top surface of the seismic isolation floor can be completely flat, eliminating the restrictions on the placement of seismic isolation objects. In addition, the number of seismic isolation bearings can be increased and the seismic isolation with the desired floor area. There is no conventional two-dimensional connection structure for base-isolated bearings that can easily realize the floor.

  The present invention comprises a lower base, an upper base having the same dimensions as the lower base, the lower base, and a seismic isolation element disposed between the upper base and a substantially cubic shape, and the lower base and the upper base. A plurality of seismic isolation bearings configured to be able to move relative to each other in a specific direction according to the seismic isolation function of the seismic isolation element, between the seismic isolation bearings adjacent to each other in one direction and the other direction orthogonal thereto. A two-dimensional connection structure for a base-isolated bearing for a base-isolated floor that has a space portion and is connected in a separate array and a two-dimensional array to form a base-isolated floor region on the top surface, The required number of undercarriage positioning connecting bodies for positioning and connecting the respective side pieces of the adjoining undercarriages with a predetermined dimension with high precision so as to have a predetermined dimension in each seismic isolation bearing forming the outer end face of , And each facing the outer end surface of the lower platform positioning connector and the outer end surfaces of the lower platforms. In the inner region of each of the seismic isolation bearings, the lower bases are adjacent to each other with a space in one direction, and each of the lower bases In the pair of both seismic isolation bearings in which the side pieces along the other direction face each other, the side pieces along one direction of each of the undercarriage are overlapped with each other in one direction and the other direction. A lower base internal connection mechanism having a required number of base internal connections to be connected in a manner in which two are arranged in parallel for each internal superposition space, and an inner region of each seismic isolation bearing The side pieces along the other direction of each of the upper bases in a pair of both seismic isolation bearings in which the upper bases are adjacent to each other across the space in the other direction and the side pieces along the one direction of each upper base are opposed to each other. The internal polymerization space part where each space part in one direction and the other direction overlaps each other in the other direction It is connected in such a manner that two inner overlapping space portions are arranged in parallel in the other direction, and four receiving portions for the upper cover plate are provided at the four corners of the inner overlapping space portion. An upper frame internal coupling mechanism comprising an upper frame internal coupling body that forms two receiving portions for the upper cover plate at the same height at both corners adjacent to the internal overlapping space in the space having a support; The side pieces on each outer end face side adjacent to each other with the space portion in each seismic isolation bearing forming the outer end face of each of the seismic isolation bearings connected so as to cover the outer end face of the space portion, and the lower Two receiving portions for the upper cover plate are formed at both corners on the outer end face side of the space portion, and are located above the respective base positioning connecting bodies on the base side, and the upper base internal connection body is formed. The upper frame end surface coupling body which consists of four at the same height with two receiving parts. Equipped with an end surface coupling mechanism of the upper platform, and each receiving portion formed in each space portion between each upper platform and the internal overlapping space portion so as to present a flat surface flush with the upper surface of each upper platform. A required number of upper cover plates that form a flat base-isolated floor region on the upper surface together with the upper surface of the upper table, and the lower table so as to cover the outer end surface side of the lower table positioning coupling body after the temporary fixing pieces are removed. The main feature is to have an undercarriage covering body attached to the positioning connecting body.

  According to the first aspect of the present invention, the required number of undercarriage positioning connecting bodies, the undercarriage positioning connecting mechanism composed of temporary fixing pieces, the lower base internal coupling mechanism consisting of the required number of undercarriage internal coupling bodies, and the required number of overhead mountings Based on the structure using the upper base internal connection mechanism consisting of the base internal connection body, the upper base end face connection mechanism consisting of the required number of upper base end face connection bodies, the required number of upper cover plates, and the required number of lower base cover bodies, Two or more seismic isolation bearings are separated and arranged with high accuracy in the front, rear, left, and right directions to form a seismic isolation floor. Displacement) can be eliminated and multiple seismic isolation bearings can be installed correctly, and multiple seismic isolation bearings can be linked together to achieve high performance seismic isolation performance. As a flat surface, you can eliminate the restriction of seismic isolation objects, Shin expansion of the number of installed bearing is also simplified, to achieve a two-dimensional connection structure of MenShinyuka for seismic isolation bearings which can easily realize MenShinyuka having a desired floor space, it can be provided.

  According to the second aspect of the present invention, a required number of lower frames, a lower base positioning and connecting mechanism including a lower joint, a lower base internal connecting mechanism including a required number of lower bridges, and an upper base internal connection including a required number of upper bridges. Based on a mechanism, a structure that uses the required number of upper skirts, an upper platform end face coupling mechanism, a required number of upper cover plates, and a required number of lower skirts, multiple seismic isolation bearings can be separated from each other with high accuracy in the front, rear, left, and right directions. The base isolation floor is configured by positioning in two dimensions while positioning, and the error of the mutual spacing (interval gap) in multiple base isolation bearings that make up the base isolation floor is eliminated to accurately identify each base isolation bearing. It can be installed to reliably link multiple seismic isolation bearings to achieve high performance seismic isolation performance, and the top surface of the base isolation floor can be completely flat to eliminate the restriction of seismic isolation object placement. And more installations of seismic isolation bearings It is a simplified, to achieve a two-dimensional connection structure of MenShinyuka for seismic isolation bearings which can easily realize MenShinyuka having a desired floor space, can be provided.

FIG. 1 is a plan view of four seismic isolation bearings in a two-dimensional connection end state in a two-dimensional connection structure of a seismic isolation bearing for a seismic isolation floor according to an embodiment of the present invention. FIG. 2 is a front view showing a state where the two-dimensional connection ends of the four seismic isolation bearings in the two-dimensional connection structure of the seismic isolation bearings for the base isolation floor according to the present embodiment. FIG. 3 is an explanatory view of the arrangement of the four seismic isolation bearings before the two-dimensional connection in the two-dimensional connection structure of the base isolation base for the base isolation floor according to the present embodiment. FIG. 4 is a diagram showing a plan view and a front view of one seismic isolation bearing in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 5 is a diagram showing a plane, a front surface, and a side surface of the lower frame to which the lower joint is attached in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 6 is a front view of the lower joint in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 7 is a diagram showing a plane, a front surface, and a side surface of the lower bridge in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 8 is a diagram showing a plane, a front surface, and a side surface of the lower skirt in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 9 is a diagram showing a plane, a front surface, and a side surface of the upper bridge in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 10 is a diagram illustrating a plane, a front surface, and a side surface of a pillow in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 11 is a view showing a plane, a front surface, and a side surface of the upper skirt in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 12 is a plan view showing the upper cover plate in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 13: is a top view which shows the state before the two-dimensional connection of the four seismic isolation bearings in the two-dimensional connection structure of the base-isolation support for base isolation floors concerning a present Example. FIG. 14 is a partially enlarged explanatory view showing a mounting state of the lower frame, the lower joint, and the lower bridge with respect to the seismic isolation bearing in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 15 is an enlarged plan view showing a state in which the lower frame, the lower joint, and the lower bridge are attached to the four seismic isolation bearings in the two-dimensional connection structure of the seismic isolation floor support base according to the present embodiment. FIG. 16 is a partially enlarged view showing a state in which a pillow and an upper joint are added to the base of each base isolation support after connecting the bases in the two-dimensional connection structure of the base isolation base for base isolation floor according to the present embodiment. It is explanatory drawing FIG. 17 is an enlarged plan view showing a state in which pillows and upper joints are added to each of the four bases of the base isolation bearings in the two-dimensional connection structure of the base isolation base for base isolation floors according to the present embodiment. FIG. 18 is a partially enlarged explanation showing a state in which an upper skirt is added to the upper base of the base isolation bearing and a lower skirt is added to the lower base in the two-dimensional connection structure of the base isolation base for the base isolation floor according to the present embodiment. It is a figure FIG. 19 shows a state in which an upper skirt is added to the upper base of the four seismic isolation bearings and a lower skirt is added to the lower base in the two-dimensional connection structure of the base isolation base for the base isolation floor according to this embodiment. It is an enlarged plan view. FIG. 20 shows a two-dimensional connection structure for base-isolated bearings for base-isolated floors according to the present embodiment, in which five upper cover plates are installed between four upper bases and at the center between four base-isolated supports. It is an enlarged plan view which shows the state used as the seismic isolation floor as a dimension connection completion state. FIG. 21 shows a two-dimensional connection structure for a base-isolated bearing for a base-isolated floor according to the present embodiment, in which N base-isolated bearings are connected in the front-rear direction and M base-isolated bearings are connected in the left-right direction. It is a top view which shows the example of an expansion which installed each upper cover board and made it the seismic isolation floor of a large area.

  The present invention forms a base-isolated floor by positioning a plurality of base-isolated bearings in a separated state with high accuracy in the front-rear and left-right directions to form a base-isolated floor. By eliminating errors (interval gaps) and accurately installing multiple seismic isolation bearings, the multiple seismic isolation bearings can be reliably linked to demonstrate high-performance seismic isolation performance. The upper surface is a completely flat surface, which eliminates the restrictions on the placement of seismic isolation objects.In addition, the number of seismic isolation bearings can be increased easily, and seismic isolation floors with the desired floor area can be easily realized. The purpose of realizing and providing a two-dimensional connection structure of seismic isolation bearings for seismic isolation floors is to provide a lower frame, an upper frame of the same size as the lower frame, and a base isolation element disposed between the lower frame and the upper frame. And having a substantially cubic shape, the base frame and the base frame are used for the base isolation function of the base isolation element. A plurality of seismic isolation bearings configured to be able to move relative to each other in a specific direction, with a space portion between the seismic isolation bearings adjacent to each other in one direction and the other direction orthogonal thereto, and Each of the seismic isolation bearings forming the outer end surface of the seismic isolation bearings. By adjusting the screwing of the bolts so that each side piece between adjacent bases across the space in FIG. 2 has a predetermined size (the error or spacing between the mutual spacings of the plurality of base-isolated bearings constituting the base-isolated floor) The required number of lower frames to be positioned and connected with high accuracy, and the outer end surfaces of the lower frames and the outer end surfaces of the lower mounts (to eliminate misalignment and accurately install a plurality of seismic isolation bearings) Temporarily fix between the corners of each side so that the dimensions are constant. A number of lower joints, and a base piece positioning connection mechanism, and in the inner region of each of the seismic isolation bearings, the lower bases are adjacent to each other with a space in one direction, and side pieces along the other direction of each of the lower bases The side pieces along one direction of each of the above-mentioned undercarriages in a pair of both seismic isolation bearings facing each other in one direction, penetrating in one direction the internal overlapping space part where each space part in the other direction overlaps, and In addition, a lower base internal connection mechanism having a required number of lower bridges to be connected in a manner of being arranged in parallel for each internal superposition space portion, and an inner region of each of the seismic isolation bearings, the upper bases in the other direction The side pieces along the other direction of the upper frame in the pair of both seismic isolation bearings that are adjacent to each other and the side pieces along the one direction of the upper frame are opposed to each other. Penetrate the internal polymerization space where the parts overlap in the other direction and In a space portion having two receiving portions for the upper cover plate at the four corners of the inner overlapping space portion and seismic isolation bearings on both sides. An upper mount internal coupling mechanism having an upper bridge that forms two receiving portions for the upper cover plate at the same height at both corners adjacent to the inner overlapping space portion, and the outer side of each of the seismic isolation bearings The side pieces on the outer end face side adjacent to each other with the space portion in each seismic isolation bearing forming the end face are connected so as to cover the outer end face of the space portion, and above the lower frame on the lower frame side The two receiving portions for the upper cover plate supported by each pillow attached to the side piece on each outer end surface side are formed at both corners on the outer end surface side of the space portion, and the interior of the upper base is formed. Together with the two receiving parts formed by the coupling body, it is composed of four pieces at the same height. A flat surface that is flush with the upper surface of each upper frame is formed on the upper frame end surface coupling mechanism having upper skirts and four receiving portions formed in each space between the upper frames and in the internal overlapping space. A required number of upper cover plates that form a flat base-isolated floor region together with the upper surface of the upper base on the upper surface, and an outer surface side of the lower frame after removing the lower bridge are attached to the lower frame. This is realized by a configuration having a lower skirt to be attached.

  Hereinafter, regarding the two-dimensional connection structure of the base-isolated bearing for the base-isolated floor according to the embodiment of the present invention, for example, four base-isolated bearings are arranged in front, back, left and right at equal intervals, and the plan view is square as a whole. The case of two-dimensional connection so as to form an array will be described in detail with reference to the drawings.

  FIG. 1 and FIG. 2 show a two-dimensional connection structure of seismic isolation bearings for a seismic isolation floor according to the present embodiment, that is, four units, that is, first to fourth seismic isolation bearings 1A to 1D and five upper cover plates. The top view and the front view of the state made into the seismic isolation floor 111 using 101 are shown.

  FIG. 3 shows the arrangement relationship before the two-dimensional connection of the first to fourth seismic isolation bearings 1A to 1D. In this embodiment, the direction on the drawing is clearly shown for convenience of explanation. Therefore, as shown in FIG. 3, the following description will be given by defining “front”, “rear”, “left”, and “right”, defining the left-right direction as one direction, and the front-rear direction as the other direction.

  In this embodiment, each of the four seismic isolation bearings is divided into the first to fourth seismic isolation bearings 1A to 1D in a two-dimensional connection structure, and the first seismic isolation bearing 1A and the second seismic isolation bearing. The space between 1B is the first space portion 11A, the space between the first seismic isolation bearing 1A and the third seismic isolation bearing 1C is the second space portion 11B, and the second seismic isolation bearing. The space between 1B and the fourth seismic isolation bearing 1D is the third space portion 11C, and the space between the third seismic isolation bearing 1C and the fourth seismic isolation bearing 1D is the fourth space portion 11D. And the space part formed in the center is defined as the 5th space part (internal polymerization space part) 11E.

  Further, as shown in FIG. 4, each of the first seismic isolation bearings 1A has a three-dimensional shape having a square shape with a side of, for example, 500 mm and a total height of, for example, 99 mm in plan view. The following description will be made assuming that each of the space portions 11A to 11E has a side of 500 mm and forms a three-dimensional space having a square shape in plan view.

  As shown in FIG. 4, the first seismic isolation bearing 1 </ b> A includes a lower base 2, an upper base 4 having the same dimensions as the lower base 2, and a rail type disposed between the lower base 2 and the upper base 4. And a seismic isolation element (not shown).

  Necessary bolt screw holes are provided in the front, rear, left and right side pieces 3 of the lower base 2 of the first seismic isolation bearing 1A. Similarly, the front, rear, left and right side pieces 5 of the upper base 4 are also required. Screw holes for screwing are provided.

  The upper base 4 of the first seismic isolation bearing 1A has one direction (or other direction) with respect to the lower base 2 and an oblique direction of 45 degrees (referred to as P direction) and an oblique direction orthogonal to the P direction ( This is configured to exhibit the seismic isolation function by shifting in the Q direction).

  The second to fourth seismic isolation bearings 1B to 1D are configured in the same manner as in the case of the first seismic isolation bearing 1A.

  Next, the detail of each component for two-dimensional connection in the two-dimensional connection structure of the seismic isolation bearing for a base isolation floor according to the present embodiment will be described with reference to FIGS.

(Constituent elements for connecting each base in the first to fourth seismic isolation bearings)
In the present embodiment, the components for connecting the lower mounts 2 include a lower mount positioning connecting body including four lower frames 21, temporary fixing pieces including eight lower joints 31, and two lower bridges 41. The lower base positioning connecting mechanism is composed of the lower base positioning connecting body and the temporary fixing piece.

  As shown in FIG. 5, the lower frame 21 includes a rectangular bottom piece 22, a long side piece 23 erected vertically from one long side edge of the bottom piece 22, and short sides on both sides of the bottom piece 22. And a pair of short side pieces 24 vertically raised from the end edges, the other long side edge side of the bottom piece 22 and the upper side of the bottom piece 22 are in an open state, one side and top open type Are formed in a substantially rectangular parallelepiped box shape, and have a total of four.

  Also, the outer dimension in the left-right direction of the long side piece 23 of the lower frame 21 and the dimension between the outer surfaces of the pair of short side pieces 24 are, for example, exactly 497 mm, the long side piece 23 and the short side The height dimension of the piece 24 is 30 mm, for example.

  Further, required insertion holes for inserting bolts are provided in both corners of the long side piece 23 in a predetermined arrangement, and the pair of short side pieces 24 are respectively provided with a required interval 3 for inserting bolts. An insertion hole is provided.

  As shown in FIG. 6, the lower joint 31 has a flat plate shape with both ends rounded, and a predetermined insertion hole for bolt insertion is provided in a predetermined arrangement, for example, a total length of 100 mm. Yes.

  As will be described later, the lower bridge 41 includes side pieces 3, 3 on the center side of the upper base 4 of each of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B, and a third seismic isolation bearing. In order to connect the side pieces 3 and 3 on the center side of each of the upper mounts 4 of 1C and the fourth seismic isolation bearing 1D in the left-right direction, two pieces are configured, and the total length is, for example, 870 mm.

  As shown in FIG. 7, the lower bridge 41 includes a vertical piece 42 having a pair of joining pieces 43, 43 at both corners, and a saddle shape projecting horizontally from the lower end of the vertical piece 42. And a pair of joining piece portions 43, 43 each having a predetermined insertion hole for inserting a bolt in a predetermined arrangement.

  As shown in FIG. 8, the lower skirt 51 includes a lower skirt vertical piece 52 and a small skirt horizontal piece 53 protruding in a horizontal direction from the lower end of the lower skirt vertical piece 52. It is L-shaped and has a total length of, for example, 498 mm, for a total of four.

  The lower skirt vertical piece 52 is provided with a predetermined insertion hole for inserting a bolt in a predetermined arrangement to cover the outside of the long side piece 23 of the lower frame 21 after the lower joint 31 is removed. In this embodiment, the lower frame 21 is connected and fixed with bolts.

(Constituent elements for connecting each base in the first to fourth seismic isolation bearings)
In this embodiment, each of the components for connecting the upper base includes an upper base internal connection body including two upper bridges 61, an eight pillow 81, and an upper base end surface connection body including four upper skirts 91. 5 upper cover plates 101, and two upper bridges 61 and two lower bridges 41 form an upper mount internal connection mechanism, and the eight pillows 81 and four upper skirts 91 constitutes an upper frame end face coupling mechanism.

  The upper bridge 61 includes side pieces 5 and 5 on the center side of the upper bases 4 and 4 of the first seismic isolation bearing 1A and the third seismic isolation bearing 1C, and the second seismic isolation bearing 1B and the fourth In order to connect the side pieces 5 and 5 on the center side of the upper bases 4 and 4 of the seismic isolation bearing 1D in the front-rear direction arrangement, two pieces are formed, and the total length is, for example, 920 mm.

  As shown in FIG. 9, the upper bridge 61 includes a first vertical piece 63 having a total length of, for example, 920 mm, and a horizontal direction from the lower end of the first vertical piece 63, and in a horizontal direction over the entire length. The projecting first horizontal piece 64, the hanging piece 65 projecting downward from the first horizontal piece 64, and a total of four rectangular shapes provided at predetermined intervals on the upper surface of the first horizontal piece 64. An L-shaped upper bridge joining piece 62 having an upper cover plate receiving piece 66, a second vertical piece 68 having an overall length substantially half the length of the first vertical piece 63, and the second vertical piece A second horizontal piece 69 projecting horizontally from the lower end of 68 in a horizontal direction over the entire length, a hanging piece 70 projecting downward from the second horizontal piece 69, and the second horizontal piece A total of two upper cover plate receiving pieces 71 in a rectangular shape provided at predetermined intervals on the upper surface of 69; The L-shaped upper bridge joining auxiliary piece 67 is provided so that the first vertical piece 63 and the second vertical piece 68 are back-to-back, and the lengthwise centers of both coincide with each other. It is configured by being integrally connected by screwing or the like.

  The distance between two adjacent upper cover plate receiving pieces 66, 66 on the side close to the center of the upper bridge joining piece 62 is such that the upper bridge 61 of one of the two upper bridges 61, 61 will be described in detail later. However, for example, when connected between the side pieces 5 and 5 on the center side (right side) of the upper bases 4 and 4 of the first seismic isolation bearing 1A and the third seismic isolation bearing 1C, The cover plate receiving pieces 66 and 66 are set to have an interval within the left corners (front side and rear side) of the fifth space portion 11E.

  At this time, the two upper cover plate receiving pieces 66, 66 outside the two upper cover plate receiving pieces 66, 66 are respectively located on the left side of the first space portion 11A and on the central side. It is set so as to fit in the corner and the corner on the left side of the fourth space portion 11D and on the center side.

  Further, the distance between the two upper cover plate receiving pieces 71, 71 of the upper bridge joining auxiliary piece 67 is such that two upper cover plate receiving pieces 66, 66 adjacent to each other on the side close to the center of the upper bridge joining piece 62. Thus, the two upper cover plate receiving pieces 71, 71 of the upper bridge joining auxiliary piece 67 are respectively located at the central corners (front side, rear side) of the second space portion 11B. I try to fit.

  Contrary to the case described above, the other upper bridge 61 of the two upper bridges 61, 61 is, for example, the center side of the upper bases 4, 4 of the second seismic isolation bearing 1B and the fourth seismic isolation bearing 1D. When connected between the side pieces 5 and 5, the two upper cover plate receiving pieces 66 and 66 adjacent to each other on the side close to the center of the upper bridge joining piece 62 of the other upper bridge 61 are connected to the fifth space portion. 11E, the two upper cover plate receiving pieces 66, 66 outside the two upper cover plate receiving pieces 66, 66 are placed in the right corners (front side, rear side) of the 11E. It is arranged on the right side of the portion 11A and on the corner on the center side, and on the right side of the fourth space portion 11D and on the corner on the center side.

  Furthermore, at this time, the two upper cover plate receiving pieces 71, 71 of the upper bridge joining auxiliary piece 67 are respectively accommodated in the central corners (front side, rear side) of the third space portion 11B. It has become.

  As shown in FIG. 10, the pillow 81 includes a vertical piece 82 and a bowl-shaped horizontal piece 83 that protrudes in the horizontal direction from the lower end of the vertical piece 82.

  The upper skirt receiving piece 84 is formed in a horizontal arrangement at a protruding end of the horizontal piece 83 so as to be higher than the horizontal piece 83, the total length is set to 90 mm, for example, and the vertical piece The required insertion holes for inserting bolts or screws are provided in 82, and a total of eight holes are formed.

  As shown in FIG. 11, the upper skirt 91 protrudes in the horizontal direction from the lower end of the outer vertical piece 93 having a total length of, for example, 998 mm, and from the lower end of the outer vertical piece 93 in the horizontal direction. An outer skirt piece 92 having an outer horizontal piece portion 94, an inner vertical piece portion 96 having the same length as the outer vertical piece portion 93 and substantially half the height, and the inner vertical piece piece. An inner horizontal piece 97 having a length of approximately 500 mm that protrudes in the horizontal direction from the center of the lower end of the portion 96 and in the direction opposite to the outer horizontal piece 94, and downward from the lower surface of the inner horizontal piece 97 An inner skirt piece 95 having a projecting hanging piece 98 and upper cover plate receiving pieces 99 and 99 provided at both upper corners of the inner horizontal piece 97 is provided.

  Then, the outer skirt piece 92 and the inner skirt piece 95 are aligned so that the upper end edges of the outer vertical piece 93 and the inner vertical piece 96 coincide with each other, and these two are integrated using bolts or screws. It is composed.

  Accordingly, the inner horizontal piece 97 extends from the center in the length direction of the inner vertical piece 96 to both sides thereof, and the upper cover plate receiving pieces 99 and 99 have the length of the inner vertical piece 96. It is configured to be a target arrangement with respect to the direction center.

  The pair of upper cover plate receiving pieces 99, 99 of the inner skirt piece 95 is installed on the upper skirt receiving piece 84 of the pillow 81 as will be described later.

  As shown in FIG. 12, the upper cover plate 101 is formed of, for example, a metal flat plate or the like having a square shape with a side substantially equal to the planar dimensions of the first to fifth space portions 11A to 11E. There are 5 sheets in total.

  Next, in the two-dimensional connection structure of the base isolation base for the base isolation floor according to the present embodiment using each of the above-described components, the two-dimensional connection structure and the two-dimensional connection step in the case of connecting the four base isolation bearings, This will be described in detail with reference to FIGS.

(Connection by the lower frame 21, the lower joint 31, and the lower skirt 51 with respect to the lower mounts 2 of the first to fourth seismic isolation bearings 1A to 1D)
First, as shown in FIG. 13, first to fourth seismic isolation bearings 1A to 1D are prepared. Next, as shown in FIGS. 14 and 15, the first to fourth seismic isolation bearings 1A to 1D are prepared. The 1D undercarriage 2 is connected by four lower frames 21.

  In FIG. 14, in the first space portion 11A, the right side piece 3 of the first seismic isolation bearing 1A and the left side piece 3 of the second seismic isolation bearing 1B are used using the lower frame 21. A partly enlarged manner of connection is shown.

  As shown in FIG. 14, on the front surface side of the first space portion 11A, the lower frame 21 is connected to the right side piece 3 of the undercarriage 2 of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B. The bottom piece 22 of the lower frame 21 and a pair of short side pieces 24 are inserted between the left side pieces 3 and the front side of the long side piece 23 of the lower frame 21 is the first relief. It is set as the state which becomes flush with the side piece 3 of each front surface of the both base 2 of the seismic support 1A and the 2nd seismic isolation support 1B.

  Then, by two lower joints 31, the end of the side piece 3 on the front surface of each lower base 2 of the first seismic isolation bearing 1 </ b> A and the second seismic isolation bearing 1 </ b> B and the long side piece of the lower frame 21 The both ends of the front surface of 23 are connected and fixed in a temporarily fixed manner using bolts and nuts, respectively. The illustration of the nut is omitted.

  At this time, the outer dimension in the left-right direction of the long side piece 23 in the lower frame 21 is set to 497 mm. In the connection region (front end surface region) of the lower frame 21, the first seismic isolation bearing 1A Between the right side piece 3 of the lower frame 2 and the short side piece 24 on the left side of the lower frame 21, and the left side piece 3 of the lower frame 2 of the second seismic isolation bearing 1B, A gap G of 1.5 mm is formed between each short side piece 24 on the right side of the frame 21 and the first space of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B. The positions of the screw holes of the side pieces 3 of the lower mounts 2 and the insertion holes of the lower frame 21 and the lower joint 31 so that the distance between the opposite side pieces 3 of the lower mount 2 facing each other in the portion 11A is accurately 500 mm. Is set in advance.

  Next, between the right side piece 3 of the cradle 2 of the first seismic isolation bearing 1A and the short side piece 24 on the left side of the lower frame 21, and the cradle base of the second seismic isolation bearing 1B The first seismic isolation bearing 1A is adjusted such that each gap G between the left side piece 3 of 2 and the short side piece 24 on the right side of the lower frame 21 is exactly 1.5 mm. The second seismic isolation bearing 1B is positioned with high accuracy.

  That is, as shown in FIG. 14, a predetermined amount is provided from the three insertion holes provided in the left side piece 24 on the left side of the lower frame 21 to the right side piece 3 of the cradle 2 of the first seismic isolation bearing 1A. Three bolts 25a, 25b, 25a are screwed in at intervals, and similarly, the base 2 of the second seismic isolation bearing 1B from the three insertion holes provided in the short side piece 24 on the right side of the lower frame 21. Three bolts 25a, 25b, and 25a are screwed into the right side piece 3 with a predetermined interval.

  At this time, the bolts 25b are respectively arranged at substantially the center positions in the length direction of the left and right short side pieces 24, and the bolts 25a and 25a are respectively provided on both sides (the lower joint 31 side and the fifth space portion 11E side) of the bolt 25b. Shall be placed.

  The bolt 25a has a flat portion in contact with the outer surface of the short side piece 24 of the bolt head, and the bolt 25b has a portion in contact with the outer surface of the short side piece 24 of the bolt head. Is set to be substantially conical.

  Using such three bolts 25a, 25b, 25a, the right side of the undercarriage 2 of the first seismic isolation bearing 1A from the three insertion holes provided in the short side piece 24 on the left side of the lower frame 21. By screwing these into the side piece 3 and adjusting the screwed state, the short side piece 24 is moved to the right side piece 3 side of the undercarriage 2 of the first seismic isolation bearing 1A by the tightening force of the bolt 25b. On the other hand, the right side piece 3 of the undercarriage 2 of the first seismic isolation bearing 1A is pulled into the first space portion 11A side by the tightening force of the other two bolts 25a and 25a. Act to be

  As a result, the short side piece 24 on the left side of the lower frame 21 and the right side piece 3 of the gantry 2 of the first seismic isolation bearing 1A are accurately arranged in parallel.

  Three bolts 25a, 25b, and 25a are screwed into the right side piece 3 of the undercarriage 2 of the second seismic isolation bearing 1B from the three insertion holes provided in the right side short piece 24 of the lower frame 21. The case where the screwed state is adjusted is the same as that described above.

  Since the dimension between the outer surfaces of the pair of short side pieces 24 of the lower frame 21 is accurately set to 497 mm, the short side piece 24 on the left side of the lower frame 21 and the first relief A gap G of exactly 1.5 mm is formed between the right side piece 3 of the base 2 of the seismic support 1A, and similarly the short side piece 24 on the right side of the lower frame 21 and the second seismic isolation support. A gap G of exactly 1.5 mm is also formed between the left side piece 3 of the lower base 2 of 1B, and thereby the lower base 2 of the first seismic isolation bearing 1A and the second The base 2 of the seismic isolation bearing 1B has an interval of 500 mm and is positioned in a completely parallel arrangement.

  Between the base 2 of the first seismic isolation bearing 1A and the base 2 of the third base isolation 1C, the base 2 of the second base isolation 1B and the base 2 of the fourth base isolation 1D And the connection between the lower base 2 of the third seismic isolation bearing 1C and the lower base 2 of the fourth seismic isolation support 1D using the lower frame 21 and the lower joint 31 as described above. By adopting the structure, each is spaced 500 mm from each other and is positioned in a completely parallel arrangement.

  Next, by the two lower bridges 41, the side pieces 3 on the center side (second space portion 11B side) of the respective bases 2 of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B, The side pieces 3, 3 on the center side (the third space portion 11C side) of each of the undercarriages 2 of the third and third seismic isolation bearings 1C and 4D are connected in the left-right direction.

  That is, the pair of joint pieces 43 and 43 provided on the vertical piece portion 42 of one lower bridge 41 are respectively connected to the center of the lower bases 2 and 2 of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B. The joint pieces 43 and 43 are joined equally to the outer surface of the side piece 3 on the side, and the joint pieces 43 and 43 are connected and fixed to the outer surface of the side piece 3 on the center side of each of the lower pedestals 2 by using bolts. A pair of joint pieces 43, 43 provided on the vertical piece 42 of the bridge 41 are connected to the side pieces 3 on the center side of the lower bases 2, 2 of the third seismic isolation bearing 1 </ b> C and the fourth seismic isolation bearing 1 </ b> D. It joins equally to an outer surface, and these joining piece parts 43 and 43 are connected and fixed to the outer surface of the side piece 3 of the center side of each said mount frame 2 using a volt | bolt.

  In this way, the state in which the lower bases 2 of the first to fourth seismic isolation bearings 1A to 1D are connected by the four lower frames 21, the eight lower joints 31, and the two lower bridges 41 is illustrated. As shown in FIG.

  In this state, the side pieces 3 of the undercarriage 2 in the first to fourth seismic isolation bearings 1A to 1D are opposed to each other across the first to fourth space portions 11A to 11D. Positioned with high accuracy so as to have an interval of exactly 500mm

  The first to fourth spaces of the upper bases 4 positioned above the lower bases 2 of the first to fourth seismic isolation bearings 1A to 1D are also the same as those of the lower bases 2 described above. Positioning with high accuracy so that the parts facing each other across the portions 11A to 11D have an accurate spacing of 500 mm.

  Further, in the central region surrounded by the first to fourth seismic isolation bearings 1A to 1D, there is a fifth space portion (inner overlapping space portion) 11E that is a three-dimensional space having a square shape with a side of 500 mm in plan view. Formed with high accuracy.

(Connection by the upper bridge 61, the pillow 81, the upper skirt 91, and the upper cover plate 101 to each of the upper mounts 4 of the first to fourth seismic isolation bearings 1A to 1D)
Next, a two-dimensional connection structure and a connection process for the upper mounts 4 of the first to fourth seismic isolation bearings 1A to 1D will be described with reference to FIGS.

  First, as shown in FIG. 16, the upper bridge 61 of one of the two upper bridges 61 has a central side of each of the upper bases 4 and 4 of the first seismic isolation bearing 1A and the third seismic isolation bearing 1C. The side pieces 5, 5 on the first space portion 11 </ b> A side and the fourth space portion 11 </ b> D side are connected in the front-rear direction arrangement.

  Further, the other upper bridge 61 allows the central side (first space portion 11A side, fourth space portion 11D side) of the upper bases 4 and 4 of the second seismic isolation bearing 1B and the fourth seismic isolation bearing 1D. ) Side pieces 5 and 5 are connected in a front-rear direction arrangement.

  Specifically, as shown in FIGS. 16 and 18, the first upper bridge 61 is arranged in the front-rear direction, and the first vertical piece 63 of the upper bridge joining piece 62 is on the right side. The front end portion of one vertical piece 63 is joined to the right side piece 5 of the upper base 4 of the first seismic isolation bearing 1A and connected to the side piece 5 using a bolt.

  Further, the rear end portion side of the first vertical piece 63 of the upper bridge joining piece 62 of the one upper bridge 61 is joined to the right side piece 5 of the gantry 4 of the third seismic isolation bearing 1C. Then, it is connected to the side piece 5 using a bolt.

  Similarly, the other upper bridge 61 is arranged in the front-rear direction and the first vertical piece 63 of the upper bridge joining piece 62 is on the left side, and the front end side of the first vertical piece 63 is The second seismic isolation bearing 1B is joined to the left side piece 5 of the gantry 4 and connected to the side piece 5 using bolts.

  Further, the rear end portion side of the first vertical piece portion 63 of the upper bridge joint piece 62 of the other upper bridge 61 is joined to the left side piece 5 of the gantry 4 of the fourth seismic isolation bearing 1D. Then, it is connected to the side piece 5 using a bolt.

  As a result, as described above, the two upper cover plate receiving pieces 66, 66 near the center of the upper bridge joining piece 62 in one upper bridge 61 are formed at the left corners of the fifth space portion 11E. (The front side and the rear side), and the two upper cover plate receiving pieces 66, 66 on the outer side are respectively the left side of the first space portion 11A and the corner on the center side, and the fourth side It fits on the left side of the space 11D and in the corner on the center side.

  Further, the two upper cover plate receiving pieces 71, 71 provided on the upper bridge joining auxiliary piece 67 in one upper bridge 61 are provided at the front and rear corners on the center side of the second space portion 11 </ b> B. Each fits.

  Similarly, the two upper cover plate receiving pieces 66, 66 near the center of the other upper bridge 61 are accommodated in the right corners (front side, rear side) of the fifth space portion 11E, The two upper cover plate receiving pieces 66, 66 are respectively located on the right side of the first space portion 11A, on the central corner, on the right side of the fourth space portion 11D, and on the center side. The two upper cover plate receiving pieces 71 and 71 which are placed in the corner portion and provided on the upper bridge joining auxiliary piece 67 in the other upper bridge 61 are front side and rear side at the center side of the third space portion 11C. Fits in each corner.

  Next, as shown in FIG. 16, two pillows 81, 81 are prepared and arranged above the lower frame 21 arranged in the first space portion 11 </ b> A, and the vertical piece 82 of one pillow 81 is provided. Are connected in close contact with the right side piece 5 of the upper base 4 of the first seismic isolation bearing 1A, and the upper skirt receiving piece 84 faces the upper base 4 side of the second seismic isolation bearing 1B. Protruding state.

  Similarly, in the arrangement above the lower frame 21, the vertical piece 82 of the other pillow 81 is closely connected to the left side piece 5 of the upper base 4 of the second seismic isolation bearing 1B by bolts. The upper skirt receiving piece 84 is in a state of protruding toward the gantry 4 side of the first seismic isolation bearing 1A.

  That is, the upper skirt receiving pieces 84 and 84 of the two pillows 81 are arranged to face each other above the lower frame 21.

  In the same manner as described above, two pillows 81, 81 are also provided above the lower frames 21 arranged in the second space portion 11B, the third space portion 11C, and the fourth space portion 11D, respectively. Place.

  By arranging two upper bridges 61 and 61 for each upper base 4 of each of the first to fourth seismic isolation bearings 1A to 1D as described above, as shown in FIG. In each of the four corners of the space portion 11E, the upper cover plate receiving pieces 66 are in a square arrangement in a state where the upper cover plate receiving pieces 66 are positioned lower than the upper surfaces of the upper mounts 4 and in a manner that is flush with the horizontal direction. Become.

  Further, a total of four upper cover plate receiving pieces 66 at the center side corners of each of the first space portion 11A and the fourth space portion 11D are provided for the fifth space portion 11E. Similarly, it exists in the state which becomes a position lower than the upper surface of each upper stand 4 and is flush with the horizontal direction.

  Further, the upper cover plate receiving pieces 71 and 71 are respectively positioned at both lower corners of the second space portion 11B at a position lower than the upper surface of each upper pedestal 4 and in the horizontal direction. The upper cover plate receiving pieces 71 and 71 are located at lower positions than the upper surfaces of the upper mounts 4 at both corners on the center side of the third space portion 11C. And it exists in the aspect which becomes flush | planar about a horizontal direction.

  FIG. 17 shows a state in which two upper bridges 61, 61 and eight pillows 81 are arranged in this way on each of the upper bases 4 of the first to fourth seismic isolation bearings 1A to 1D. .

  Next, after connecting the first to fourth seismic isolation bearings 1A to 1D in the state shown in FIG. 17, the four upper skirts 91 are connected to the first to fourth seismic isolation bearings 1A to 1D. To do.

  FIG. 18 (bottom of FIG. 18) shows a state in which the upper skirt 91 is connected to the front end face of each upper base 4 of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B.

  Specifically, the outer skirt piece 92 of the upper skirt 91 is the front side, the inner skirt piece 95 is the first space portion 11A side, and the inner horizontal piece portion 97 is inserted into the first space portion 11A. As a state, both corners of the outer vertical piece 93 and the inner horizontal piece 97 are joined to the front end face of each side piece 5 of each upper base 4 of the first seismic isolation bearing 1A and second seismic isolation bearing 1B. Then, these are connected to each upper mount 4 using bolts.

  As a result, the lower surfaces of both corners of the inner horizontal piece 97 in the upper skirt 91 are supported in contact with the upper skirt receiving pieces 84 of the two pillows 81, and both the inner horizontal pieces 97 are also supported. A pair of upper cover plate receiving pieces 99, 99 provided at the corners are located on the right side and the left side of each side piece 5 of each upper base 4 of the first seismic isolation bearing 1A and second seismic isolation bearing 1B. And it exists in the state which becomes the same height as the above-mentioned upper cover board receiving piece 66 in the front side both corners of said 1st space part 11A.

  Between the left side end surfaces of the upper bases 4 of the first seismic isolation bearing 1A and the third seismic isolation bearing 1C and the second space 11B, the second seismic isolation bearing 1B, and the fourth seismic isolation bearing 1D Also between the right end surface of the base 4 and the third space portion 11B, and between the rear side end surfaces of the upper bases 4 of the third seismic isolation bearing 1C and the fourth seismic isolation bearing 1D and the fourth space portion 11D. The upper skirts 91 are connected in the same manner as described above.

  As a result, the upper cover plate receiving piece 99 and the upper cover are provided on the right side of the upper base 4 of the first seismic isolation bearing 1A in the first space portion 11A, and at the front corner and the central corner. A plate receiving piece 66 is arranged, and the upper cover plate receiving piece 99 and the upper cover plate receiving piece 66 are also arranged at the front corner and the central corner on the left side of the gantry 4 of the second seismic isolation bearing 1B. The four upper cover plate receiving pieces 99 and 99 and the upper cover plate receiving pieces 66 and 66 are in the same height at a position lower than the upper surface of each upper mount 4.

  That is, a total of four upper cover plate receiving pieces 99 and 99 and upper cover plate receiving pieces 66 and 66 are arranged at the four corners of the first space portion 11A, next to the left and right upper mounts 4. Is done.

  In the second space 11A, on the center side of the upper base 4 of the first seismic isolation bearing 1A, and on the left corner and the central corner are the upper cover plate receiving piece 99, the upper cover plate holder. A piece 71 is disposed, and the upper cover plate receiving piece 99 and the upper cover plate receiving piece 71 are provided at the center side of the upper base 4 of the third seismic isolation bearing 1C and at the left corner and the central corner. The four upper cover plate receiving pieces 99 and 99 and the upper cover plate receiving pieces 71 and 71 are at the same height at a position lower than the upper surface of each upper mount 4.

  That is, a total of four upper cover plate receiving pieces 99, 99 and upper cover plate receiving pieces 71, 71 are arranged at the four corners of the second space portion 11B, next to the upper and lower gantry 4 on both sides. Is done.

  The upper cover plate receiving piece 99, the upper cover plate are provided at the center side of the upper base 4 of the second seismic isolation bearing 1B in the third space portion 11C, and at the right corner and the central corner. A receiving piece 71 is disposed, and the upper cover plate receiving piece 99 and the upper cover plate receiving piece are provided at the center side of the upper base 4 of the third seismic isolation bearing 1C and at the left corner and the central corner. 71 is arranged, and the four upper cover plate receiving pieces 99 and 99 and the upper cover plate receiving pieces 71 and 71 are in the same height at a position lower than the upper surface of each upper mount 4.

  That is, a total of four upper cover plate receiving pieces 99 and 99, and upper cover plate receiving pieces 71 and 71 are arranged at the four corners of the third space portion 11C next to the upper and lower gantry 4 respectively. The

  In the fourth space 11D, on the center side of the upper base 4 of the third seismic isolation bearing 1C, and on the rear corner and the center corner, the upper cover plate receiving piece 99, the upper cover A plate receiving piece 66 is disposed on the center side of the upper base 4 of the fourth seismic isolation bearing 1D, and at the rear corner and the central corner, the upper cover plate receiving piece 99, the upper cover plate The receiving pieces 66 are arranged, and the four upper cover plate receiving pieces 99 and 99 and the upper cover plate receiving pieces 66 and 66 are in the same height at a position lower than the upper surface of each upper mount 4.

That is, a total of four upper cover plate receiving pieces 99 and 99 and upper cover plate receiving pieces 66 and 66 are arranged at the four corners of the fourth space portion 11D, next to the left and right upper mounts 4. Is done.
Further, a total of four upper cover plate receiving pieces 66 are disposed at the four corners of the fifth space portion 11E.

  In this way, the four upper skirts 91 are connected to the front, rear, left, and right outer surfaces of each upper base 4 in each of the first to fourth seismic isolation bearings 1A to 1D. 19 shows.

  As is clear from FIG. 19, the first to fifth space portions 11A to 11D are respectively located next to the upper mounts 4 and have a square shape in plan view, and one side for the upper cover plate 101 having a side of 500 mm. Five mounting areas are formed.

  Then, by attaching a total of five upper cover plates 101 to each mounting region formed in the first to fifth space portions 11A to 11D, as shown in FIG. The bases 1 </ b> A to 1 </ b> D and the five upper cover plates 101 can be two-dimensionally connected to each other in the front-rear, left-right, and highly accurate positions to obtain the seismic isolation floor 111 having a flat upper surface.

  Finally, after removing the four lower joints 31 on each of the lower frame 2 side, the four lower skirts 51 are attached to the lower frame 21 so as to cover the outer end face of the long side piece 23 of the lower frame 21. By connecting and fixing by bolting and making the appearance of the outer end face of the long side piece 23 of the frame 21 good, the seismic isolation floor 111 is completed, and a series of connecting steps is completed.

  FIGS. 1 and 2 show a plan view and a front view of the seismic isolation floor 111 thus completed arranged on the fixed floor 112. FIG.

  According to the present embodiment described above, the required number of lower frames 21 and the lower base positioning and connecting mechanism including the lower joint 31, the required number of upper base internal connection mechanisms including the lower bridge 41 and the upper bridge 61, and the required number of upper frames. Each of the first to fourth seismic isolation bearings 1A to 1A constituting the seismic isolation floor based on the configuration using the upper frame end face coupling mechanism including the skirt 91, the required number of upper cover plates 101, and the required number of lower skirts 51. A structure for accurately installing each of the plurality of base-isolated bearings by eliminating the error (interval gap) between each other in 1D, that is, the first to fourth base-isolated bearings 1A to 1D are separated. The seismic isolation floor 111 is configured by two-dimensionally arranging it with high precision positioning in the front and rear, left and right, and the first to fourth seismic isolation bearings 1A to 1D are reliably linked to demonstrate high performance seismic isolation performance. Of the seismic isolation floor 111 The placement of the base isolation object 113 can be eliminated by making the surface completely flat, and the number of seismic isolation bearings to be used can be increased, simplifying the base isolation floor 111 having the desired floor area. Thus, it is possible to realize a two-dimensional connection structure of seismic isolation bearings for seismic isolation floors that can be easily realized.

  When mentioning an example of a specific configuration of the first seismic isolation bearing 1A (the second to fourth seismic isolation bearings 1B to 1D) and the seismic isolation floor 111, for example, the size of the first seismic isolation bearing 1A Is 500 × 500 × 99 (mm), maximum displacement ± 390 mm, allowable load of mounting 5000 (500) N (kgf) / 1 unit, mass 23 kg, damping using a rotary friction damper as a seismic isolation element An example that employs a mechanism and a rail-type support mechanism can be given.

  Needless to say, the first to fourth seismic isolation bearings 1A to 1D are not limited to this, and various seismic isolation bearings having a known structure can be used.

  Further, the area of the seismic isolation floor 111 is at least 1 square meter and can be unlimited, and the height of the base isolation floor 111 can be set to 125 to 600 mm.

As a feature of the seismic isolation floor 111 in this embodiment,
(A) An ultra-thin (125 mm) without expansion (buffer plate) and a seismic isolation floor 111 having a maximum displacement of ± 390 [mm] can be configured.
(B) By adopting a rail mechanism, the seismic isolation performance is stable even if the mounting load changes, and the vibration can be reduced to 1/6. Also, the damping performance is proportional to the mounting load, unlike the viscous damper. Horizontal displacement is suppressed by adopting a rotary friction damper that exhibits the damping force, and it can cope with long-period seismic waves.
(C) Avoid the risk of aftershocks with the restoration function (no use of restoration springs that are prone to accidents).
(D) Since there is no contact (friction resistance) between the expansion and the fixed floor 112 that hinders the seismic isolation performance, the seismic isolation effect can be fully exhibited.
(E) There is no gap between the seismic isolation floor 111 and the fixed floor 112, and since it is completely separated, it can be configured to be safe and secure, and since there is no expansion, the effective seismic isolation floor area As it expands, the ultra-thin shape can clear the ceiling height restriction.
(F) A material that generates zinc whiskers (needle crystals generated from zinc), which is a cause of errors in computers installed on the seismic isolation floor 111, is not used.
(G) Since each of the high-stiffness first to fourth seismic isolation bearings 1A to 1D is connected by combining various types of equipment such as thin and heavy load seismic isolation devices and thin base isolation floors. The optimal layout can be freely adjusted, and it can be easily reduced or expanded after construction.
(H) The currently installed OA floor can be renewed to the seismic isolation floor 111.
(I) A sufficient wiring area can be secured safely on the slab instead of on the first seismic isolation bearing 1A or the like, and underfloor air conditioning is possible.
(J) No need for grout (non-land adjustment mortar) construction, etc. By adopting a dry construction method that only bolts are tightened, the construction period is shortened and adjustment at the construction site is not required. Cost performance and maintenance-free can be realized.
The following points can be mentioned.

  FIG. 21 shows an example of expansion of the two-dimensional connection structure of the seismic isolation bearing for the base isolation floor according to the present embodiment. The two-dimensional connection structure of the above-described embodiment is adopted, and N pieces ( N is a positive integer greater than or equal to 2) with the upper cover plate 101 in between, and M (M is a positive integer greater than or equal to 2) seismic isolation bearings 1 The seismic isolation floor 111A having a large area is configured by arranging the cover plates 101 in between.

In this case, the number K of the upper cover plates 101 is set as follows.
That is, in general, K = (M−1) × N + {M + (M−1)} × (N−1) = (M−1) × N + (2M−1) × (N−1) sheets Become.

  For example, in the case of the embodiment described above, M = 2 and N = 2, so that K = 5 from the above formula, and in the case of M = 3 and N = 3 (the seismic isolation bearing 1 is 9). In the case of a stand), K = 16 from the above formula, and in the case of M = 4 and N = 4 (when the seismic isolation bearing 1 is 16), K = 33 from the above formula.

  According to the two-dimensional connecting structure of the seismic isolation bearing for seismic isolation floor shown in FIG. 21, the configuration is the same as that of the above-described embodiment, and M pieces in one direction (M is a positive number of 2 or more). ), N in the other direction (N is a positive integer greater than or equal to 2), a total of M × N seismic isolation bearings 1 arranged in a separate arrangement, and each space portion formed between each upper frame 4 In the case of the embodiment described above, based on the configuration comprising the required number of upper cover plates 101 determined by the equation of (M-1) × N + (2M−1) × (N−1) The seismic isolation floor 111A having a desired floor area can be simply realized by selecting the number of the base isolation bearings 1 and the upper cover plate 101 according to the size of the installation location. A two-dimensional connection structure for seismic isolation bearings for seismic isolation floors can be realized and provided.

  The two-dimensional connection structure of the seismic isolation bearing for the seismic isolation floor of the present invention is a seismic isolation system such as computer equipment, various machines, equipment, precision instruments, arts, antiques, etc. in office buildings, factories, museums, museums, etc. Widely applicable for seismic isolation of objects.

DESCRIPTION OF SYMBOLS 1 Seismic isolation bearing 1A 1st seismic isolation bearing 1B 2nd seismic isolation bearing 1C 3rd seismic isolation bearing 1D 4th seismic isolation bearing 2 Lower stand 3 Side piece 4 Upper stand 5 Side piece 11A 1st space part 11B 2nd space part 11C 3rd space part 11D 4th space part 11E 5th space part 21 Lower frame 22 Bottom piece 23 Long side piece 24 Short side piece 25a Bolt 25b Bolt 31 Lower joint 41 Lower bridge 42 Vertical piece 43 Joint piece 44 Horizontal piece 51 Lower skirt 52 Lower skirt vertical piece 53 Lower skirt horizontal piece 61 Upper bridge 62 Upper bridge joined piece 63 First vertical piece 64 First horizontal piece 65 Drooping piece 66 Upper cover plate receiving piece 67 Upper bridge joining auxiliary piece 68 Second vertical piece 69 Second horizontal piece 70 Suspended piece 71 Upper cover plate receiving piece 81 Pillow 82 Vertical piece 83 Horizontal piece 84 Upper skirt receiving portion 91 Upper skirt 92 Outer skirt piece 93 Outer vertical piece portion 94 Outer horizontal piece portion 95 Inner skirt piece 96 Inner vertical piece portion 97 Inner horizontal piece portion 98 Drooping piece 99 Upper cover plate receiving piece 101 Upper cover plate 111 Seismic isolation floor 111A Seismic isolation floor 112 Fixed floor 113 Seismic isolation object

  The present invention relates to a two-dimensional connection structure of base-isolated bearings for base-isolated floors, and more specifically, eliminates an error in mutual spacing (interval gaps) in a plurality of base-isolated bearings constituting the base-isolated floor. A structure for accurately installing seismic isolation bearings, that is, seismic isolation that can easily realize a seismic isolation floor of a desired area while positioning multiple seismic isolation bearings constituting the seismic isolation floor with high precision This is related to the two-dimensional connection structure of seismic isolation bearings for floors.

  On OA floors where computers and related equipment are installed, and floors where various precision devices are installed, seismic isolation floors are placed on those floors to prevent seismic disasters for seismic isolation objects such as computers and various precision devices. There is a strong demand for prevention.

  As such a seismic isolation floor, usually, a plurality of seismic isolation bearings are two-dimensionally arranged in the front, rear, left, and right directions, and the plurality of seismic isolation bearings are linked so as to exhibit seismic isolation performance.

  In Patent Document 1, as a technique related to the present invention, M × N is arranged in M rows with an X-axis separation space interposed therebetween and arranged in N rows with a Y-axis separation space interposed therebetween. A seismic isolation body, an X-axis gantry coupling member disposed in each of the X-axis separation spaces, and a Y-axis gantry coupling member disposed in each of the Y-axis separation spaces. The main body has a lower base, a carriage, and an upper base, and the X-axis upper base connecting member extends in the X-axis direction, and a pair of ends of the X-axis upper base long member A pair of X-axis upper frame coupling members coupled to the upper frame of the pair of seismic isolation main bodies sandwiching the X-axis separation space, and the Y-axis upper frame coupling member extending in the Y-axis direction. A pair of ends of the upper frame long member and the Y-axis upper frame long member are coupled to the upper frame of the pair of seismic isolation bodies sandwiching the Y-axis separation space, respectively. MenShinyuka structure arrangement is disclosed having a pair of Y on the axis gantry coupling member that.

  However, in the case of the base-isolated floor structure disclosed in Patent Document 1, each base-isolated main body base that sandwiches the X-axis separated space and each base-isolated main body base that sandwiches the Y-axis spaced space each have a pair of X It is the structure which couple | bonds using an on-axis mount coupling member, and a pair of Y-axis mount mounting member, In the seismic isolation floor structure of this patent document 1, accumulation of the minute and minute error of each seismic isolation main body It is not possible to eliminate the error, and the error (interval gap) between each seismic isolation main body is eliminated, and each seismic isolation main body is positioned accurately and connected with high accuracy. It is estimated that it is difficult to do.

JP 2010-275799 A

  The problem to be solved by the present invention is that two or more seismic isolation bearings are separated and arranged two-dimensionally with high precision positioning in the front and rear and left and right directions to form a seismic isolation floor. Eliminates the error in the mutual spacing (separation of the gap) in the seismic bearings, accurately installs each seismic isolation bearing and demonstrates the high performance seismic isolation performance by linking multiple seismic isolation bearings reliably. The top surface of the seismic isolation floor can be completely flat, eliminating the restrictions on the placement of seismic isolation objects. In addition, the number of seismic isolation bearings can be increased and the seismic isolation with the desired floor area. There is no conventional two-dimensional connection structure for base-isolated bearings that can easily realize the floor.

The present invention comprises a lower base, an upper base having the same dimensions as the lower base, the lower base, and a seismic isolation element disposed between the upper base and a substantially cubic shape, and the lower base and the upper base. A plurality of seismic isolation bearings configured to be able to move relative to each other in a specific direction according to the seismic isolation function of the seismic isolation element, between the seismic isolation bearings adjacent to each other in one direction and the other direction orthogonal thereto. A two-dimensional connection structure for a base-isolated bearing for a base-isolated floor that has a space portion and is connected in a separate array and a two-dimensional array to form a base-isolated floor region on the top surface, The required number of undercarriage positioning connecting bodies for positioning and connecting the respective side pieces of the adjoining undercarriages with a predetermined dimension with high precision so as to have a predetermined dimension in each seismic isolation bearing forming the outer end face of , And each facing the outer end surface of the lower platform positioning connector and the outer end surfaces of the lower platforms. A lower rack positioning coupling mechanism and a required number of temporary stop piece for tacking between pieces, the inside area of each base isolation bearing disposed adjacent to an intervening space between the upper cradle in one direction, each of the upper frame In the pair of both seismic isolation bearings in which the side pieces along the other direction face each other, the side pieces along the one direction of each of the upper bases are overlapped with each other in one direction and the other direction. the through in one direction, and a pedestal internal connection mechanism on with the required number of top cradle inner connecting member for connecting a manner that two parallel arranged for each inner polymerization space, the inside area of each base isolation support The side pieces along the other direction of each of the upper bases in a pair of both seismic isolation bearings in which the upper bases are adjacent to each other across the space in the other direction and the side pieces along the one direction of each upper base are opposed to each other. The internal polymerization space part where each space part in one direction and the other direction overlaps each other in the other direction It is connected in such a manner that two inner overlapping space portions are arranged in parallel in the other direction, and four receiving portions for the upper cover plate are provided at the four corners of the inner overlapping space portion. An upper frame internal coupling mechanism comprising an upper frame internal coupling body that forms two receiving portions for the upper cover plate at the same height at both corners adjacent to the internal overlapping space in the space having a support; The side pieces on each outer end face side adjacent to each other with the space portion in each seismic isolation bearing forming the outer end face of each of the seismic isolation bearings connected so as to cover the outer end face of the space portion, and the lower Two receiving portions for the upper cover plate are formed at both corners on the outer end face side of the space portion, and are located above the respective base positioning connecting bodies on the base side, and the upper base internal connection body is formed. The upper frame end surface coupling body which consists of four at the same height with two receiving parts. Equipped with an end surface coupling mechanism of the upper platform, and each receiving portion formed in each space portion between each upper platform and the internal overlapping space portion so as to present a flat surface flush with the upper surface of each upper platform. A required number of upper cover plates that form a flat base-isolated floor region on the upper surface together with the upper surface of the upper table, and the lower table so as to cover the outer end surface side of the lower table positioning coupling body after the temporary fixing pieces are removed. The main feature is to have an undercarriage covering body attached to the positioning connecting body.

  According to the first aspect of the present invention, the required number of lower base positioning connection bodies, the lower base positioning connection mechanism consisting of temporary fixing pieces, the upper base internal connection mechanism consisting of the required number of upper base internal connection bodies, and the required number of overhead mountings. Based on a structure using an upper base end face connection mechanism consisting of base end face connecting bodies, a required number of upper cover plates, and a required number of lower base cover bodies, a plurality of seismic isolation bearings are accurately positioned in the front, rear, left and right directions. However, two-dimensionally arranging the base-isolated floor, the error of the mutual spacing (interval gap) in the base-isolated bearings constituting the base-isolated floor is eliminated, and each base-isolated base is accurately installed. As a result, it is possible to reliably link multiple seismic isolation bearings to demonstrate high-performance seismic isolation performance, and to eliminate the restriction of seismic isolation objects by making the top surface of the base isolation floor completely flat. Moreover, it is easy to increase the number of seismic isolation bearings installed. To realize a two-dimensional connection structure easily realized can MenShinyuka for seismic isolation bearing the MenShinyuka, can be provided.

  According to the second aspect of the present invention, a required number of lower frames, a lower base positioning and connecting mechanism including a lower joint, a lower base internal connecting mechanism including a required number of lower bridges, and an upper base internal connection including a required number of upper bridges. Based on a mechanism, a structure that uses the required number of upper skirts, an upper platform end face coupling mechanism, a required number of upper cover plates, and a required number of lower skirts, multiple seismic isolation bearings can be separated from each other with high accuracy in the front, rear, left, and right directions. The base isolation floor is configured by positioning in two dimensions while positioning, and the error of the mutual spacing (interval gap) in multiple base isolation bearings that make up the base isolation floor is eliminated to accurately identify each base isolation bearing. It can be installed to reliably link multiple seismic isolation bearings to achieve high performance seismic isolation performance, and the top surface of the base isolation floor can be completely flat to eliminate the restriction of seismic isolation object placement. And more installations of seismic isolation bearings It is a simplified, to achieve a two-dimensional connection structure of MenShinyuka for seismic isolation bearings which can easily realize MenShinyuka having a desired floor space, can be provided.

FIG. 1 is a plan view of four seismic isolation bearings in a two-dimensional connection end state in a two-dimensional connection structure of a seismic isolation bearing for a seismic isolation floor according to an embodiment of the present invention. FIG. 2 is a front view showing a state where the two-dimensional connection ends of the four seismic isolation bearings in the two-dimensional connection structure of the seismic isolation bearings for the base isolation floor according to the present embodiment. FIG. 3 is an explanatory view of the arrangement of the four seismic isolation bearings before the two-dimensional connection in the two-dimensional connection structure of the base isolation base for the base isolation floor according to the present embodiment. FIG. 4 is a diagram showing a plan view and a front view of one seismic isolation bearing in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 5 is a diagram showing a plane, a front surface, and a side surface of the lower frame to which the lower joint is attached in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 6 is a front view of the lower joint in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 7 is a diagram showing a plane, a front surface, and a side surface of the lower bridge in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 8 is a diagram showing a plane, a front surface, and a side surface of the upper skirt in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 9 is a diagram showing a plane, a front surface, and a side surface of the upper bridge in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 10 is a diagram illustrating a plane, a front surface, and a side surface of a pillow in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 11 is a view showing a plane, a front surface, and a side surface of the upper skirt in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 12 is a plan view showing the upper cover plate in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 13: is a top view which shows the state before the two-dimensional connection of the four seismic isolation bearings in the two-dimensional connection structure of the base-isolation support for base isolation floors concerning a present Example. FIG. 14 is a partially enlarged explanatory view showing a mounting state of the lower frame, the lower joint, and the lower bridge with respect to the seismic isolation bearing in the two-dimensional connection structure of the seismic isolation bearing for a seismic isolation floor according to the present embodiment. FIG. 15 is an enlarged plan view showing a state in which the lower frame, the lower joint, and the lower bridge are attached to the four seismic isolation bearings in the two-dimensional connection structure of the seismic isolation floor support base according to the present embodiment. FIG. 16 is a partially enlarged view showing a state in which a pillow and an upper joint are added to the base of each base isolation support after connecting the bases in the two-dimensional connection structure of the base isolation base for base isolation floor according to the present embodiment. It is explanatory drawing . FIG. 17 is an enlarged plan view showing a state in which pillows and upper joints are added to each of the four bases of the base isolation bearings in the two-dimensional connection structure of the base isolation base for base isolation floors according to the present embodiment. FIG. 18 is a partially enlarged explanation showing a state in which an upper skirt is added to the upper base of the base isolation bearing and a lower skirt is added to the lower base in the two-dimensional connection structure of the base isolation base for the base isolation floor according to the present embodiment. It is a figure FIG. 19 shows a state in which an upper skirt is added to the upper base of the four seismic isolation bearings and a lower skirt is added to the lower base in the two-dimensional connection structure of the base isolation base for the base isolation floor according to this embodiment. It is an enlarged plan view. FIG. 20 shows a two-dimensional connection structure for base-isolated bearings for base-isolated floors according to the present embodiment, in which five upper cover plates are installed between four upper bases and at the center between four base-isolated supports. It is an enlarged plan view which shows the state used as the seismic isolation floor as a dimension connection completion state. FIG. 21 shows a two-dimensional connection structure for a base-isolated bearing for a base-isolated floor according to the present embodiment, in which N base-isolated bearings are connected in the front-rear direction and M base-isolated bearings are connected in the left-right direction. It is a top view which shows the example of an expansion which installed each upper cover board and made it the seismic isolation floor of a large area.

The present invention forms a base-isolated floor by positioning a plurality of base-isolated bearings in a separated state with high accuracy in the front-rear and left-right directions to form a base-isolated floor. By eliminating errors (interval gaps) and accurately installing multiple seismic isolation bearings, the multiple seismic isolation bearings can be reliably linked to demonstrate high-performance seismic isolation performance. The upper surface is a completely flat surface, which eliminates the restrictions on the placement of seismic isolation objects.In addition, the number of seismic isolation bearings can be increased easily, and seismic isolation floors with the desired floor area can be easily realized. The purpose of realizing and providing a two-dimensional connection structure of seismic isolation bearings for seismic isolation floors is to provide a lower frame, an upper frame of the same size as the lower frame, and a base isolation element disposed between the lower frame and the upper frame. And having a substantially cubic shape, the base frame and the base frame are used for the base isolation function of the base isolation element. A plurality of seismic isolation bearings configured to be able to move relative to each other in a specific direction, with a space portion between the seismic isolation bearings adjacent to each other in one direction and the other direction orthogonal thereto, and Each of the seismic isolation bearings forming the outer end surface of the seismic isolation bearings. By adjusting the screwing of the bolts so that each side piece between adjacent bases across the space in FIG. 2 has a predetermined size (the error or spacing between the mutual spacings of the plurality of base-isolated bearings constituting the base-isolated floor) The required number of lower frames to be positioned and connected with high accuracy, and the outer end surfaces of the lower frames and the outer end surfaces of the lower mounts (to eliminate misalignment and accurately install a plurality of seismic isolation bearings) Temporarily fix between the corners of each side so that the dimensions are constant. A lower rack positioning coupling mechanism and a lower joint of a few, the inside area of each base isolation bearing, between the upper cradle adjoin intervening space in one direction, the side pieces along said other direction of each upper frame The side pieces along one direction of each of the upper mounts in a pair of both seismic isolation bearings facing each other, unidirectionally penetrate the internal overlapping space part where each space part overlaps in one direction, and In addition, an upper base internal connection mechanism having a required number of lower bridges to be connected in a mode of being arranged in parallel for each internal superposition space portion, and an inner region of each of the seismic isolation bearings, the upper bases in the other directions The side pieces along the other direction of the upper frame in the pair of both seismic isolation bearings that are adjacent to each other and the side pieces along the one direction of the upper frame are opposed to each other. Penetrate the internal polymerization space where the parts overlap in the other direction and In a space portion having two receiving portions for the upper cover plate at the four corners of the inner overlapping space portion and seismic isolation bearings on both sides. An upper mount internal coupling mechanism having an upper bridge that forms two receiving portions for the upper cover plate at the same height at both corners adjacent to the inner overlapping space portion, and the outer side of each of the seismic isolation bearings The side pieces on the outer end face side adjacent to each other with the space portion in each seismic isolation bearing forming the end face are connected so as to cover the outer end face of the space portion, and above the lower frame on the lower frame side The two receiving portions for the upper cover plate supported by each pillow attached to the side piece on each outer end surface side are formed at both corners on the outer end surface side of the space portion, and the interior of the upper base is formed. Together with the two receiving parts formed by the coupling body, it is composed of four pieces at the same height. A flat surface that is flush with the upper surface of each upper frame is formed on the upper frame end surface coupling mechanism having upper skirts and four receiving portions formed in each space between the upper frames and in the internal overlapping space. A required number of upper cover plates that form a flat base-isolated floor region together with the upper surface of the upper base on the upper surface, and an outer surface side of the lower frame after removing the lower bridge are attached to the lower frame. This is realized by a configuration having a lower skirt to be attached.

  Hereinafter, regarding the two-dimensional connection structure of the base-isolated bearing for the base-isolated floor according to the embodiment of the present invention, for example, four base-isolated bearings are arranged in front, back, left and right at equal intervals, and the plan view is square as a whole. The case of two-dimensional connection so as to form an array will be described in detail with reference to the drawings.

  FIG. 1 and FIG. 2 show a two-dimensional connection structure of seismic isolation bearings for a seismic isolation floor according to the present embodiment, that is, four units, that is, first to fourth seismic isolation bearings 1A to 1D and five upper cover plates. The top view and the front view of the state made into the seismic isolation floor 111 using 101 are shown.

  FIG. 3 shows the arrangement relationship before the two-dimensional connection of the first to fourth seismic isolation bearings 1A to 1D. In this embodiment, the direction on the drawing is clearly shown for convenience of explanation. Therefore, as shown in FIG. 3, the following description will be given by defining “front”, “rear”, “left”, and “right”, defining the left-right direction as one direction, and the front-rear direction as the other direction.

  In this embodiment, each of the four seismic isolation bearings is divided into the first to fourth seismic isolation bearings 1A to 1D in a two-dimensional connection structure, and the first seismic isolation bearing 1A and the second seismic isolation bearing. The space between 1B is the first space portion 11A, the space between the first seismic isolation bearing 1A and the third seismic isolation bearing 1C is the second space portion 11B, and the second seismic isolation bearing. The space between 1B and the fourth seismic isolation bearing 1D is the third space portion 11C, and the space between the third seismic isolation bearing 1C and the fourth seismic isolation bearing 1D is the fourth space portion 11D. And the space part formed in the center is defined as the 5th space part (internal polymerization space part) 11E.

  Further, as shown in FIG. 4, each of the first seismic isolation bearings 1A has a three-dimensional shape having a square shape with a side of, for example, 500 mm and a total height of, for example, 99 mm in plan view. The following description will be made assuming that each of the space portions 11A to 11E has a side of 500 mm and forms a three-dimensional space having a square shape in plan view.

  As shown in FIG. 4, the first seismic isolation bearing 1 </ b> A includes a lower base 2, an upper base 4 having the same dimensions as the lower base 2, and a rail type disposed between the lower base 2 and the upper base 4. And a seismic isolation element (not shown).

  Necessary bolt screw holes are provided in the front, rear, left and right side pieces 3 of the lower base 2 of the first seismic isolation bearing 1A. Similarly, the front, rear, left and right side pieces 5 of the upper base 4 are also required. Screw holes for screwing are provided.

  The upper base 4 of the first seismic isolation bearing 1A has one direction (or other direction) with respect to the lower base 2 and an oblique direction of 45 degrees (referred to as P direction) and an oblique direction orthogonal to the P direction ( This is configured to exhibit the seismic isolation function by shifting in the Q direction).

  The second to fourth seismic isolation bearings 1B to 1D are configured in the same manner as in the case of the first seismic isolation bearing 1A.

  Next, the detail of each component for two-dimensional connection in the two-dimensional connection structure of the seismic isolation bearing for a base isolation floor according to the present embodiment will be described with reference to FIGS.

(Constituent elements for connecting each base in the first to fourth seismic isolation bearings)
In the present embodiment, the components for connecting the lower mounts 2 are the lower mount positioning connecting body including the four lower frames 21, the temporary fastening pieces including the eight lower joints 31, and the four lower skirts 51. The lower platform positioning connecting mechanism is composed of the lower platform positioning connecting body and the temporary fixing piece.

  As shown in FIG. 5, the lower frame 21 includes a rectangular bottom piece 22, a long side piece 23 erected vertically from one long side edge of the bottom piece 22, and short sides on both sides of the bottom piece 22. And a pair of short side pieces 24 vertically raised from the end edges, the other long side edge side of the bottom piece 22 and the upper side of the bottom piece 22 are in an open state, one side and top open type Are formed in a substantially rectangular parallelepiped box shape, and have a total of four.

  Also, the outer dimension in the left-right direction of the long side piece 23 of the lower frame 21 and the dimension between the outer surfaces of the pair of short side pieces 24 are, for example, exactly 497 mm, the long side piece 23 and the short side The height dimension of the piece 24 is 30 mm, for example.

  Further, required insertion holes for inserting bolts are provided in both corners of the long side piece 23 in a predetermined arrangement, and the pair of short side pieces 24 are respectively provided with a required interval 3 for inserting bolts. An insertion hole is provided.

  As shown in FIG. 6, the lower joint 31 has a flat plate shape with both ends rounded, and a predetermined insertion hole for bolt insertion is provided in a predetermined arrangement, for example, a total length of 100 mm. Yes.

As will be described later, the lower bridge 41 includes side pieces 5 and 5 on the center side of the upper base 4 of each of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B, and a third seismic isolation bearing. In order to connect the side pieces 5 and 5 on the center side of the upper mounts 4 of 1C and the fourth seismic isolation bearing 1D in the left-right direction, two pieces are formed, and the total length is, for example, 870 mm.

  As shown in FIG. 7, the lower bridge 41 includes a vertical piece 42 having a pair of joining pieces 43, 43 at both corners, and a saddle shape projecting horizontally from the lower end of the vertical piece 42. And a pair of joining piece portions 43, 43 each having a predetermined insertion hole for inserting a bolt in a predetermined arrangement.

  As shown in FIG. 8, the lower skirt 51 includes a lower skirt vertical piece 52 and a small skirt horizontal piece 53 protruding in a horizontal direction from the lower end of the lower skirt vertical piece 52. It is L-shaped and has a total length of, for example, 498 mm, for a total of four.

  The lower skirt vertical piece 52 is provided with a predetermined insertion hole for inserting a bolt in a predetermined arrangement to cover the outside of the long side piece 23 of the lower frame 21 after the lower joint 31 is removed. In this embodiment, the lower frame 21 is connected and fixed with bolts.

(Constituent elements for connecting each base in the first to fourth seismic isolation bearings)
In the present embodiment, the components for connecting the upper bases are the upper base internal connection body composed of two upper bridges 61 , two lower bridges 41 , eight pillows 81, and four upper skirts 91. And the upper cover plate 101, and the two upper bridges 61 and the two lower bridges 41 constitute an upper mount internal connection mechanism, and the eight pillows 81 and the four upper skirts 91 constitute an upper platform end surface coupling mechanism.

  The upper bridge 61 includes side pieces 5 and 5 on the center side of the upper bases 4 and 4 of the first seismic isolation bearing 1A and the third seismic isolation bearing 1C, and the second seismic isolation bearing 1B and the fourth In order to connect the side pieces 5 and 5 on the center side of the upper bases 4 and 4 of the seismic isolation bearing 1D in the front-rear direction arrangement, two pieces are formed, and the total length is, for example, 920 mm.

  As shown in FIG. 9, the upper bridge 61 includes a first vertical piece 63 having a total length of, for example, 920 mm, and a horizontal direction from the lower end of the first vertical piece 63, and in a horizontal direction over the entire length. The projecting first horizontal piece 64, the hanging piece 65 projecting downward from the first horizontal piece 64, and a total of four rectangular shapes provided at predetermined intervals on the upper surface of the first horizontal piece 64. An L-shaped upper bridge joining piece 62 having an upper cover plate receiving piece 66, a second vertical piece 68 having an overall length substantially half the length of the first vertical piece 63, and the second vertical piece A second horizontal piece 69 projecting horizontally from the lower end of 68 in a horizontal direction over the entire length, a hanging piece 70 projecting downward from the second horizontal piece 69, and the second horizontal piece A total of two upper cover plate receiving pieces 71 in a rectangular shape provided at predetermined intervals on the upper surface of 69; The L-shaped upper bridge joining auxiliary piece 67 is provided so that the first vertical piece 63 and the second vertical piece 68 are back-to-back, and the lengthwise centers of both coincide with each other. It is configured by being integrally connected by screwing or the like.

  The distance between two adjacent upper cover plate receiving pieces 66, 66 on the side close to the center of the upper bridge joining piece 62 is such that the upper bridge 61 of one of the two upper bridges 61, 61 will be described in detail later. However, for example, when connected between the side pieces 5 and 5 on the center side (right side) of the upper bases 4 and 4 of the first seismic isolation bearing 1A and the third seismic isolation bearing 1C, The cover plate receiving pieces 66 and 66 are set to have an interval within the left corners (front side and rear side) of the fifth space portion 11E.

  At this time, the two upper cover plate receiving pieces 66, 66 outside the two upper cover plate receiving pieces 66, 66 are respectively located on the left side of the first space portion 11A and on the central side. It is set so as to fit in the corner and the corner on the left side of the fourth space portion 11D and on the center side.

  Further, the distance between the two upper cover plate receiving pieces 71, 71 of the upper bridge joining auxiliary piece 67 is such that two upper cover plate receiving pieces 66, 66 adjacent to each other on the side close to the center of the upper bridge joining piece 62. Thus, the two upper cover plate receiving pieces 71, 71 of the upper bridge joining auxiliary piece 67 are respectively located at the central corners (front side, rear side) of the second space portion 11B. I try to fit.

  Contrary to the case described above, the other upper bridge 61 of the two upper bridges 61, 61 is, for example, the center side of the upper bases 4, 4 of the second seismic isolation bearing 1B and the fourth seismic isolation bearing 1D. When connected between the side pieces 5 and 5, the two upper cover plate receiving pieces 66 and 66 adjacent to each other on the side close to the center of the upper bridge joining piece 62 of the other upper bridge 61 are connected to the fifth space portion. 11E, the two upper cover plate receiving pieces 66, 66 outside the two upper cover plate receiving pieces 66, 66 are placed in the right corners (front side, rear side) of the 11E. It is arranged on the right side of the portion 11A and on the corner on the center side, and on the right side of the fourth space portion 11D and on the corner on the center side.

Further, at this time, the two upper cover plate receiving pieces 71, 71 of the upper bridge auxiliary bonding piece 67 is fit in both corners of each said third central side in the space portion 11 C of (front, rear) It is like that.

  As shown in FIG. 10, the pillow 81 includes a vertical piece 82 and a bowl-shaped horizontal piece 83 that protrudes in the horizontal direction from the lower end of the vertical piece 82.

  The upper skirt receiving piece 84 is formed in a horizontal arrangement at a protruding end of the horizontal piece 83 so as to be higher than the horizontal piece 83, the total length is set to 90 mm, for example, and the vertical piece The required insertion holes for inserting bolts or screws are provided in 82, and a total of eight holes are formed.

  As shown in FIG. 11, the upper skirt 91 protrudes in the horizontal direction from the lower end of the outer vertical piece 93 having a total length of, for example, 998 mm, and from the lower end of the outer vertical piece 93 in the horizontal direction. An outer skirt piece 92 having an outer horizontal piece portion 94, an inner vertical piece portion 96 having the same length as the outer vertical piece portion 93 and substantially half the height, and the inner vertical piece piece. An inner horizontal piece 97 having a length of approximately 500 mm that protrudes in the horizontal direction from the center of the lower end of the portion 96 and in the direction opposite to the outer horizontal piece 94, and downward from the lower surface of the inner horizontal piece 97 An inner skirt piece 95 having a projecting hanging piece 98 and upper cover plate receiving pieces 99 and 99 provided at both upper corners of the inner horizontal piece 97 is provided.

  Then, the outer skirt piece 92 and the inner skirt piece 95 are aligned so that the upper end edges of the outer vertical piece 93 and the inner vertical piece 96 coincide with each other, and these two are integrated using bolts or screws. It is composed.

  Accordingly, the inner horizontal piece 97 extends from the center in the length direction of the inner vertical piece 96 to both sides thereof, and the upper cover plate receiving pieces 99 and 99 have the length of the inner vertical piece 96. It is configured to be a target arrangement with respect to the direction center.

  The pair of upper cover plate receiving pieces 99, 99 of the inner skirt piece 95 is installed on the upper skirt receiving piece 84 of the pillow 81 as will be described later.

  As shown in FIG. 12, the upper cover plate 101 is formed of, for example, a metal flat plate or the like having a square shape with a side substantially equal to the planar dimensions of the first to fifth space portions 11A to 11E. There are 5 sheets in total.

  Next, in the two-dimensional connection structure of the base isolation base for the base isolation floor according to the present embodiment using each of the above-described components, the two-dimensional connection structure and the two-dimensional connection step in the case of connecting the four base isolation bearings, This will be described in detail with reference to FIGS.

(Connection by the lower frame 21, the lower joint 31, and the lower skirt 51 with respect to the lower mounts 2 of the first to fourth seismic isolation bearings 1A to 1D)
First, as shown in FIG. 13, first to fourth seismic isolation bearings 1A to 1D are prepared. Next, as shown in FIGS. 14 and 15, the first to fourth seismic isolation bearings 1A to 1D are prepared. The 1D undercarriage 2 is connected by four lower frames 21.

  In FIG. 14, in the first space portion 11A, the right side piece 3 of the first seismic isolation bearing 1A and the left side piece 3 of the second seismic isolation bearing 1B are used using the lower frame 21. A partly enlarged manner of connection is shown.

  As shown in FIG. 14, on the front surface side of the first space portion 11A, the lower frame 21 is connected to the right side piece 3 of the undercarriage 2 of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B. The bottom piece 22 of the lower frame 21 and a pair of short side pieces 24 are inserted between the left side pieces 3 and the front side of the long side piece 23 of the lower frame 21 is the first relief. It is set as the state which becomes flush with the side piece 3 of each front surface of the both base 2 of the seismic support 1A and the 2nd seismic isolation support 1B.

  Then, by two lower joints 31, the end of the side piece 3 on the front surface of each lower base 2 of the first seismic isolation bearing 1 </ b> A and the second seismic isolation bearing 1 </ b> B and the long side piece of the lower frame 21 The both ends of the front surface of 23 are connected and fixed in a temporarily fixed manner using bolts and nuts, respectively. The illustration of the nut is omitted.

  At this time, the outer dimension in the left-right direction of the long side piece 23 in the lower frame 21 is set to 497 mm. In the connection region (front end surface region) of the lower frame 21, the first seismic isolation bearing 1A Between the right side piece 3 of the lower frame 2 and the short side piece 24 on the left side of the lower frame 21, and the left side piece 3 of the lower frame 2 of the second seismic isolation bearing 1B, A gap G of 1.5 mm is formed between each short side piece 24 on the right side of the frame 21 and the first space of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B. The positions of the screw holes of the side pieces 3 of the lower mounts 2 and the insertion holes of the lower frame 21 and the lower joint 31 so that the distance between the opposite side pieces 3 of the lower mount 2 facing each other in the portion 11A is accurately 500 mm. Is set in advance.

  Next, between the right side piece 3 of the cradle 2 of the first seismic isolation bearing 1A and the short side piece 24 on the left side of the lower frame 21, and the cradle base of the second seismic isolation bearing 1B The first seismic isolation bearing 1A is adjusted such that each gap G between the left side piece 3 of 2 and the short side piece 24 on the right side of the lower frame 21 is exactly 1.5 mm. The second seismic isolation bearing 1B is positioned with high accuracy.

  That is, as shown in FIG. 14, a predetermined amount is provided from the three insertion holes provided in the left side piece 24 on the left side of the lower frame 21 to the right side piece 3 of the cradle 2 of the first seismic isolation bearing 1A. Three bolts 25a, 25b, 25a are screwed in at intervals, and similarly, the base 2 of the second seismic isolation bearing 1B from the three insertion holes provided in the short side piece 24 on the right side of the lower frame 21. Three bolts 25a, 25b, and 25a are screwed into the right side piece 3 with a predetermined interval.

  At this time, the bolts 25b are respectively arranged at substantially the center positions in the length direction of the left and right short side pieces 24, and the bolts 25a and 25a are respectively provided on both sides (the lower joint 31 side and the fifth space portion 11E side) of the bolt 25b. Shall be placed.

  The bolt 25a has a flat portion in contact with the outer surface of the short side piece 24 of the bolt head, and the bolt 25b has a portion in contact with the outer surface of the short side piece 24 of the bolt head. Is set to be substantially conical.

  Using such three bolts 25a, 25b, 25a, the right side of the undercarriage 2 of the first seismic isolation bearing 1A from the three insertion holes provided in the short side piece 24 on the left side of the lower frame 21. By screwing these into the side piece 3 and adjusting the screwed state, the short side piece 24 is moved to the right side piece 3 side of the undercarriage 2 of the first seismic isolation bearing 1A by the tightening force of the bolt 25b. On the other hand, the right side piece 3 of the undercarriage 2 of the first seismic isolation bearing 1A is pulled into the first space portion 11A side by the tightening force of the other two bolts 25a and 25a. Act to be

  As a result, the short side piece 24 on the left side of the lower frame 21 and the right side piece 3 of the gantry 2 of the first seismic isolation bearing 1A are accurately arranged in parallel.

  Three bolts 25a, 25b, and 25a are screwed into the right side piece 3 of the undercarriage 2 of the second seismic isolation bearing 1B from the three insertion holes provided in the right side short piece 24 of the lower frame 21. The case where the screwed state is adjusted is the same as that described above.

  Since the dimension between the outer surfaces of the pair of short side pieces 24 of the lower frame 21 is accurately set to 497 mm, the short side piece 24 on the left side of the lower frame 21 and the first relief A gap G of exactly 1.5 mm is formed between the right side piece 3 of the base 2 of the seismic support 1A, and similarly the short side piece 24 on the right side of the lower frame 21 and the second seismic isolation support. A gap G of exactly 1.5 mm is also formed between the left side piece 3 of the lower base 2 of 1B, and thereby the lower base 2 of the first seismic isolation bearing 1A and the second The base 2 of the seismic isolation bearing 1B has an interval of 500 mm and is positioned in a completely parallel arrangement.

  Between the base 2 of the first seismic isolation bearing 1A and the base 2 of the third base isolation 1C, the base 2 of the second base isolation 1B and the base 2 of the fourth base isolation 1D And the connection between the lower base 2 of the third seismic isolation bearing 1C and the lower base 2 of the fourth seismic isolation support 1D using the lower frame 21 and the lower joint 31 as described above. By adopting the structure, each is spaced 500 mm from each other and is positioned in a completely parallel arrangement.

Next, by the two lower bridges 41, side pieces 5 on the center side (second space portion 11B side) of each upper base 4 of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B , The side pieces 5 and 5 on the center side (the third space portion 11C side) of each of the upper bases 4 of the 5 and the third seismic isolation bearing 1C and the fourth seismic isolation bearing 1D are connected in the left-right direction.

That is, the pair of joint pieces 43, 43 provided on the vertical piece 42 of one lower bridge 41 are respectively connected to the centers of the upper bases 4 , 4 of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B. The joint pieces 43 and 43 are joined equally to the outer surface of the side piece 5 on the side, and the joint pieces 43 and 43 are connected and fixed to the outer surface of the side piece 5 on the center side of each of the lower mounts 2 by using bolts. A pair of joint pieces 43 and 43 provided on the vertical piece 42 of the bridge 41 are connected to the side pieces 5 on the center side of the upper bases 4 and 4 of the third seismic isolation bearing 1C and the fourth seismic isolation bearing 1D. It joined equally to the outer surface, coupling to fix these joining pieces 43, 43 on the center side outer surface of the side pieces 5 of the upper frame 4 using bolts.

  FIG. 15 shows a state in which the first to fourth seismic isolation bearings 1A to 1D are connected by the four lower frames 21, the eight lower joints 31, and the two lower bridges 41 in this way.

In this state, the side pieces 3 of the undercarriage 2 in the first to fourth seismic isolation bearings 1A to 1D are opposed to each other across the first to fourth space portions 11A to 11D. It is positioned with high accuracy so as to have an interval of exactly 500 mm .

  The first to fourth spaces of the upper bases 4 positioned above the lower bases 2 of the first to fourth seismic isolation bearings 1A to 1D are also the same as those of the lower bases 2 described above. Positioning with high accuracy so that the parts facing each other across the portions 11A to 11D have an accurate spacing of 500 mm.

  Further, in the central region surrounded by the first to fourth seismic isolation bearings 1A to 1D, there is a fifth space portion (inner overlapping space portion) 11E that is a three-dimensional space having a square shape with a side of 500 mm in plan view. Formed with high accuracy.

(Connection by the upper bridge 61, the pillow 81, the upper skirt 91, and the upper cover plate 101 to each of the upper mounts 4 of the first to fourth seismic isolation bearings 1A to 1D)
Next, a two-dimensional connection structure and a connection process for the upper mounts 4 of the first to fourth seismic isolation bearings 1A to 1D will be described with reference to FIGS.

  First, as shown in FIG. 16, the upper bridge 61 of one of the two upper bridges 61 has a central side of each of the upper bases 4 and 4 of the first seismic isolation bearing 1A and the third seismic isolation bearing 1C. The side pieces 5, 5 on the first space portion 11 </ b> A side and the fourth space portion 11 </ b> D side are connected in the front-rear direction arrangement.

  Further, the other upper bridge 61 allows the central side (first space portion 11A side, fourth space portion 11D side) of the upper bases 4 and 4 of the second seismic isolation bearing 1B and the fourth seismic isolation bearing 1D. ) Side pieces 5 and 5 are connected in a front-rear direction arrangement.

  Specifically, as shown in FIGS. 16 and 18, the first upper bridge 61 is arranged in the front-rear direction, and the first vertical piece 63 of the upper bridge joining piece 62 is on the right side. The front end portion of one vertical piece 63 is joined to the right side piece 5 of the upper base 4 of the first seismic isolation bearing 1A and connected to the side piece 5 using a bolt.

  Further, the rear end portion side of the first vertical piece 63 of the upper bridge joining piece 62 of the one upper bridge 61 is joined to the right side piece 5 of the gantry 4 of the third seismic isolation bearing 1C. Then, it is connected to the side piece 5 using a bolt.

  Similarly, the other upper bridge 61 is arranged in the front-rear direction and the first vertical piece 63 of the upper bridge joining piece 62 is on the left side, and the front end side of the first vertical piece 63 is The second seismic isolation bearing 1B is joined to the left side piece 5 of the gantry 4 and connected to the side piece 5 using bolts.

  Further, the rear end portion side of the first vertical piece portion 63 of the upper bridge joint piece 62 of the other upper bridge 61 is joined to the left side piece 5 of the gantry 4 of the fourth seismic isolation bearing 1D. Then, it is connected to the side piece 5 using a bolt.

  As a result, as described above, the two upper cover plate receiving pieces 66, 66 near the center of the upper bridge joining piece 62 in one upper bridge 61 are formed at the left corners of the fifth space portion 11E. (The front side and the rear side), and the two upper cover plate receiving pieces 66, 66 on the outer side are respectively the left side of the first space portion 11A and the corner on the center side, and the fourth side It fits on the left side of the space 11D and in the corner on the center side.

  Further, the two upper cover plate receiving pieces 71, 71 provided on the upper bridge joining auxiliary piece 67 in one upper bridge 61 are provided at the front and rear corners on the center side of the second space portion 11 </ b> B. Each fits.

  Similarly, the two upper cover plate receiving pieces 66, 66 near the center of the other upper bridge 61 are accommodated in the right corners (front side, rear side) of the fifth space portion 11E, The two upper cover plate receiving pieces 66, 66 are respectively located on the right side of the first space portion 11A, on the central corner, on the right side of the fourth space portion 11D, and on the center side. The two upper cover plate receiving pieces 71 and 71 which are placed in the corner portion and provided on the upper bridge joining auxiliary piece 67 in the other upper bridge 61 are front side and rear side at the center side of the third space portion 11C. Fits in each corner.

  Next, as shown in FIG. 16, two pillows 81, 81 are prepared and arranged above the lower frame 21 arranged in the first space portion 11 </ b> A, and the vertical piece 82 of one pillow 81 is provided. Are connected in close contact with the right side piece 5 of the upper base 4 of the first seismic isolation bearing 1A, and the upper skirt receiving piece 84 faces the upper base 4 side of the second seismic isolation bearing 1B. Protruding state.

  Similarly, in the arrangement above the lower frame 21, the vertical piece 82 of the other pillow 81 is closely connected to the left side piece 5 of the upper base 4 of the second seismic isolation bearing 1B by bolts. The upper skirt receiving piece 84 is in a state of protruding toward the gantry 4 side of the first seismic isolation bearing 1A.

  That is, the upper skirt receiving pieces 84 and 84 of the two pillows 81 are arranged to face each other above the lower frame 21.

  In the same manner as described above, two pillows 81, 81 are also provided above the lower frames 21 arranged in the second space portion 11B, the third space portion 11C, and the fourth space portion 11D, respectively. Place.

  By arranging two upper bridges 61 and 61 for each upper base 4 of each of the first to fourth seismic isolation bearings 1A to 1D as described above, as shown in FIG. In each of the four corners of the space portion 11E, the upper cover plate receiving pieces 66 are in a square arrangement in a state where the upper cover plate receiving pieces 66 are positioned lower than the upper surfaces of the upper mounts 4 and in a manner that is flush with the horizontal direction. Become.

  Further, a total of four upper cover plate receiving pieces 66 at the center side corners of each of the first space portion 11A and the fourth space portion 11D are provided for the fifth space portion 11E. Similarly, it exists in the state which becomes a position lower than the upper surface of each upper stand 4 and is flush with the horizontal direction.

  Further, the upper cover plate receiving pieces 71 and 71 are respectively positioned at both lower corners of the second space portion 11B at a position lower than the upper surface of each upper pedestal 4 and in the horizontal direction. The upper cover plate receiving pieces 71 and 71 are located at lower positions than the upper surfaces of the upper mounts 4 at both corners on the center side of the third space portion 11C. And it exists in the aspect which becomes flush | planar about a horizontal direction.

  FIG. 17 shows a state in which two upper bridges 61, 61 and eight pillows 81 are arranged in this way on each of the upper bases 4 of the first to fourth seismic isolation bearings 1A to 1D. .

  Next, after connecting the first to fourth seismic isolation bearings 1A to 1D in the state shown in FIG. 17, the four upper skirts 91 are connected to the first to fourth seismic isolation bearings 1A to 1D. To do.

  FIG. 18 (bottom of FIG. 18) shows a state in which the upper skirt 91 is connected to the front end face of each upper base 4 of the first seismic isolation bearing 1A and the second seismic isolation bearing 1B.

  Specifically, the outer skirt piece 92 of the upper skirt 91 is the front side, the inner skirt piece 95 is the first space portion 11A side, and the inner horizontal piece portion 97 is inserted into the first space portion 11A. As a state, both corners of the outer vertical piece 93 and the inner horizontal piece 97 are joined to the front end face of each side piece 5 of each upper base 4 of the first seismic isolation bearing 1A and second seismic isolation bearing 1B. Then, these are connected to each upper mount 4 using bolts.

  As a result, the lower surfaces of both corners of the inner horizontal piece 97 in the upper skirt 91 are supported in contact with the upper skirt receiving pieces 84 of the two pillows 81, and both the inner horizontal pieces 97 are also supported. A pair of upper cover plate receiving pieces 99, 99 provided at the corners are located on the right side and the left side of each side piece 5 of each upper base 4 of the first seismic isolation bearing 1A and second seismic isolation bearing 1B. And it exists in the state which becomes the same height as the above-mentioned upper cover board receiving piece 66 in the front side both corners of said 1st space part 11A.

  Between the left side end surfaces of the upper bases 4 of the first seismic isolation bearing 1A and the third seismic isolation bearing 1C and the second space 11B, the second seismic isolation bearing 1B, and the fourth seismic isolation bearing 1D Also between the right end surface of the base 4 and the third space portion 11B, and between the rear side end surfaces of the upper bases 4 of the third seismic isolation bearing 1C and the fourth seismic isolation bearing 1D and the fourth space portion 11D. The upper skirts 91 are connected in the same manner as described above.

  As a result, the upper cover plate receiving piece 99 and the upper cover are provided on the right side of the upper base 4 of the first seismic isolation bearing 1A in the first space portion 11A, and at the front corner and the central corner. A plate receiving piece 66 is arranged, and the upper cover plate receiving piece 99 and the upper cover plate receiving piece 66 are also arranged at the front corner and the central corner on the left side of the gantry 4 of the second seismic isolation bearing 1B. The four upper cover plate receiving pieces 99 and 99 and the upper cover plate receiving pieces 66 and 66 are in the same height at a position lower than the upper surface of each upper mount 4.

  That is, a total of four upper cover plate receiving pieces 99 and 99 and upper cover plate receiving pieces 66 and 66 are arranged at the four corners of the first space portion 11A, next to the left and right upper mounts 4. Is done.

  In the second space 11A, on the center side of the upper base 4 of the first seismic isolation bearing 1A, and on the left corner and the central corner are the upper cover plate receiving piece 99, the upper cover plate holder. A piece 71 is disposed, and the upper cover plate receiving piece 99 and the upper cover plate receiving piece 71 are provided at the center side of the upper base 4 of the third seismic isolation bearing 1C and at the left corner and the central corner. The four upper cover plate receiving pieces 99 and 99 and the upper cover plate receiving pieces 71 and 71 are at the same height at a position lower than the upper surface of each upper mount 4.

  That is, a total of four upper cover plate receiving pieces 99, 99 and upper cover plate receiving pieces 71, 71 are arranged at the four corners of the second space portion 11B, next to the upper and lower gantry 4 on both sides. Is done.

  The upper cover plate receiving piece 99, the upper cover plate are provided at the center side of the upper base 4 of the second seismic isolation bearing 1B in the third space portion 11C, and at the right corner and the central corner. A receiving piece 71 is disposed, and the upper cover plate receiving piece 99 and the upper cover plate receiving piece are provided at the center side of the upper base 4 of the third seismic isolation bearing 1C and at the left corner and the central corner. 71 is arranged, and the four upper cover plate receiving pieces 99 and 99 and the upper cover plate receiving pieces 71 and 71 are in the same height at a position lower than the upper surface of each upper mount 4.

  That is, a total of four upper cover plate receiving pieces 99 and 99, and upper cover plate receiving pieces 71 and 71 are arranged at the four corners of the third space portion 11C next to the upper and lower gantry 4 respectively. The

  In the fourth space 11D, on the center side of the upper base 4 of the third seismic isolation bearing 1C, and on the rear corner and the center corner, the upper cover plate receiving piece 99, the upper cover A plate receiving piece 66 is disposed on the center side of the upper base 4 of the fourth seismic isolation bearing 1D, and at the rear corner and the central corner, the upper cover plate receiving piece 99, the upper cover plate The receiving pieces 66 are arranged, and the four upper cover plate receiving pieces 99 and 99 and the upper cover plate receiving pieces 66 and 66 are in the same height at a position lower than the upper surface of each upper mount 4.

That is, a total of four upper cover plate receiving pieces 99 and 99 and upper cover plate receiving pieces 66 and 66 are arranged at the four corners of the fourth space portion 11D, next to the left and right upper mounts 4. Is done.
Further, a total of four upper cover plate receiving pieces 66 are disposed at the four corners of the fifth space portion 11E.

FIG. 19 shows a state in which the four upper skirts 91 are connected to the front, rear, left, and right outer surfaces of the upper mounts 4 in the first to fourth seismic isolation bearings 1A to 1D in this way.

As apparent from FIG. 19, wherein the first to fifth space 11A to 11 E, each in plan view a square shape are located next to each of the upper frame 4, a cover plate 101 on the one side 500mm These five mounting areas are formed.

Then, the first, by attaching a fifth total of five on the cover plate 101 with respect to each placement region formed in the space 11A to 11 E, shown in Figure 20, four Men The seismic bearings 1A to 1D and the five upper cover plates 101 are two-dimensionally connected in a state of being accurately positioned in the front-rear and left-right directions, and the seismic isolation floor 111 having a flat upper surface can be obtained.

  Finally, after removing the four lower joints 31 on each of the lower frame 2 side, the four lower skirts 51 are attached to the lower frame 21 so as to cover the outer end face of the long side piece 23 of the lower frame 21. By connecting and fixing by bolting and making the appearance of the outer end face of the long side piece 23 of the frame 21 good, the seismic isolation floor 111 is completed, and a series of connecting steps is completed.

  FIGS. 1 and 2 show a plan view and a front view of the seismic isolation floor 111 thus completed arranged on the fixed floor 112. FIG.

  According to the present embodiment described above, the required number of lower frames 21 and the lower base positioning and connecting mechanism including the lower joint 31, the required number of upper base internal connection mechanisms including the lower bridge 41 and the upper bridge 61, and the required number of upper frames. Each of the first to fourth seismic isolation bearings 1A to 1A constituting the seismic isolation floor based on the configuration using the upper frame end face coupling mechanism including the skirt 91, the required number of upper cover plates 101, and the required number of lower skirts 51. A structure for accurately installing each of the plurality of base-isolated bearings by eliminating the error (interval gap) between each other in 1D, that is, the first to fourth base-isolated bearings 1A to 1D are separated. The seismic isolation floor 111 is configured by two-dimensionally arranging it with high precision positioning in the front and rear, left and right, and the first to fourth seismic isolation bearings 1A to 1D are reliably linked to demonstrate high performance seismic isolation performance. Of the seismic isolation floor 111 The placement of the base isolation object 113 can be eliminated by making the surface completely flat, and the number of seismic isolation bearings to be used can be increased, simplifying the base isolation floor 111 having the desired floor area. Thus, it is possible to realize a two-dimensional connection structure of seismic isolation bearings for seismic isolation floors that can be easily realized.

  When mentioning an example of a specific configuration of the first seismic isolation bearing 1A (the second to fourth seismic isolation bearings 1B to 1D) and the seismic isolation floor 111, for example, the size of the first seismic isolation bearing 1A Is 500 × 500 × 99 (mm), maximum displacement ± 390 mm, allowable load of mounting 5000 (500) N (kgf) / 1 unit, mass 23 kg, damping using a rotary friction damper as a seismic isolation element An example that employs a mechanism and a rail-type support mechanism can be given.

  Needless to say, the first to fourth seismic isolation bearings 1A to 1D are not limited to this, and various seismic isolation bearings having a known structure can be used.

  Further, the area of the seismic isolation floor 111 is at least 1 square meter and can be unlimited, and the height of the base isolation floor 111 can be set to 125 to 600 mm.

As a feature of the seismic isolation floor 111 in this embodiment,
(A) An ultra-thin (125 mm) without expansion (buffer plate) and a seismic isolation floor 111 having a maximum displacement of ± 390 [mm] can be configured.
(B) By adopting a rail mechanism, the seismic isolation performance is stable even if the mounting load changes, and the vibration can be reduced to 1/6. Also, the damping performance is proportional to the mounting load, unlike the viscous damper. Horizontal displacement is suppressed by adopting a rotary friction damper that exhibits the damping force, and it can cope with long-period seismic waves.
(C) Avoid the risk of aftershocks with the restoration function (no use of restoration springs that are prone to accidents).
(D) Since there is no contact (friction resistance) between the expansion and the fixed floor 112 that hinders the seismic isolation performance, the seismic isolation effect can be fully exhibited.
(E) There is no gap between the seismic isolation floor 111 and the fixed floor 112, and since it is completely separated, it can be configured to be safe and secure, and since there is no expansion, the effective seismic isolation floor area As it expands, the ultra-thin shape can clear the ceiling height restriction.
(F) A material that generates zinc whiskers (needle crystals generated from zinc), which is a cause of errors in computers installed on the seismic isolation floor 111, is not used.
(G) Since each of the high-stiffness first to fourth seismic isolation bearings 1A to 1D is connected by combining various types of equipment such as thin and heavy load seismic isolation devices and thin base isolation floors. The optimal layout can be freely adjusted, and it can be easily reduced or expanded after construction.
(H) The currently installed OA floor can be renewed to the seismic isolation floor 111.
(I) A sufficient wiring area can be secured safely on the slab instead of on the first seismic isolation bearing 1A or the like, and underfloor air conditioning is possible.
(J) No need for grout (non-land adjustment mortar) construction, etc. By adopting a dry construction method that only bolts are tightened, the construction period is shortened and adjustment at the construction site is not required. Cost performance and maintenance-free can be realized.
The following points can be mentioned.

  FIG. 21 shows an example of expansion of the two-dimensional connection structure of the seismic isolation bearing for the base isolation floor according to the present embodiment. The two-dimensional connection structure of the above-described embodiment is adopted, and N pieces ( N is a positive integer greater than or equal to 2) with the upper cover plate 101 in between, and M (M is a positive integer greater than or equal to 2) seismic isolation bearings 1 The seismic isolation floor 111A having a large area is configured by arranging the cover plates 101 in between.

In this case, the number K of the upper cover plates 101 is set as follows.
That is, in general, K = (M−1) × N + {M + (M−1)} × (N−1) = (M−1) × N + (2M−1) × (N−1) sheets Become.

  For example, in the case of the embodiment described above, M = 2 and N = 2, so that K = 5 from the above formula, and in the case of M = 3 and N = 3 (the seismic isolation bearing 1 is 9). In the case of a stand), K = 16 from the above formula, and in the case of M = 4 and N = 4 (when the seismic isolation bearing 1 is 16), K = 33 from the above formula.

  According to the two-dimensional connecting structure of the seismic isolation bearing for seismic isolation floor shown in FIG. 21, the configuration is the same as that of the above-described embodiment, and M pieces in one direction (M is a positive number of 2 or more). ), N in the other direction (N is a positive integer greater than or equal to 2), a total of M × N seismic isolation bearings 1 arranged in a separate arrangement, and each space portion formed between each upper frame 4 In the case of the embodiment described above, based on the configuration comprising the required number of upper cover plates 101 determined by the equation of (M-1) × N + (2M−1) × (N−1) The seismic isolation floor 111A having a desired floor area can be simply realized by selecting the number of the base isolation bearings 1 and the upper cover plate 101 according to the size of the installation location. A two-dimensional connection structure for seismic isolation bearings for seismic isolation floors can be realized and provided.

  The two-dimensional connection structure of the seismic isolation bearing for the seismic isolation floor of the present invention is a seismic isolation system such as computer equipment, various machines, equipment, precision instruments, arts, antiques, etc. in office buildings, factories, museums, museums, etc. Widely applicable for seismic isolation of objects.

DESCRIPTION OF SYMBOLS 1 Seismic isolation bearing 1A 1st seismic isolation bearing 1B 2nd seismic isolation bearing 1C 3rd seismic isolation bearing 1D 4th seismic isolation bearing 2 Lower stand 3 Side piece 4 Upper stand 5 Side piece 11A 1st space part 11B 2nd space part 11C 3rd space part 11D 4th space part 11E 5th space part 21 Lower frame 22 Bottom piece 23 Long side piece 24 Short side piece 25a Bolt 25b Bolt 31 Lower joint 41 Lower bridge 42 Vertical piece 43 Joint piece 44 Horizontal piece 51 Lower skirt 52 Lower skirt vertical piece 53 Lower skirt horizontal piece 61 Upper bridge 62 Upper bridge joined piece 63 First vertical piece 64 First horizontal piece 65 Drooping piece 66 Upper cover plate receiving piece 67 Upper bridge joining auxiliary piece 68 Second vertical piece 69 Second horizontal piece 70 Suspended piece 71 Upper cover plate receiving piece 81 Pillow 82 Vertical piece 83 Horizontal piece 84 Upper skirt receiving portion 91 Upper skirt 92 Outer skirt piece 93 Outer vertical piece portion 94 Outer horizontal piece portion 95 Inner skirt piece 96 Inner vertical piece portion 97 Inner horizontal piece portion 98 Drooping piece 99 Upper cover plate receiving piece 101 Upper cover plate 111 Seismic isolation floor 111A Seismic isolation floor 112 Fixed floor 113 Seismic isolation object

Claims (2)

A lower base, an upper base of the same size as the lower base, and a base isolation element disposed between the lower base and the upper base. The base base has a substantially cubic shape, and the base base and the upper base are A plurality of seismic isolation bearings that can be moved relative to each other in a specific direction according to the seismic isolation function of the element, have a space between the seismic isolation bearings adjacent to each other in one direction and the other direction orthogonal thereto. However, it is a two-dimensional connection structure of seismic isolation bearings for seismic isolation floors that are separated and connected in a two-dimensional array to form a base isolation floor region on the upper surface,
It is necessary to position and connect each side piece of adjacent bases with high accuracy so as to have a predetermined dimension with each space base in each seismic isolation bearing forming the outer end surface of each seismic isolation bearing. A number of lower base positioning connecting bodies, and a lower base positioning positioning mechanism having a required number of temporary fixing pieces for temporarily fixing between the outer end surfaces of the lower base positioning connecting bodies and the side pieces facing the outer end surfaces of the lower bases. When,
In the inner region of each of the base isolation bearings, the bases are adjacent to each other with a space in one direction, and the side pieces along the other direction of the bases are opposed to each other in each pair of base isolation bases. In a mode in which two side pieces along one direction of the undercarriage pierce in one direction through the internal polymerization space part where each space part in one direction and the other direction overlap, and are arranged in parallel for each internal polymerization space part. An undercarriage internal connection mechanism including a required number of undercarriage internal connection bodies to be connected;
In the inner region of each of the base isolation bearings, the upper bases are adjacent to each other with a space in the other direction and the side pieces along one direction of the upper bases face each other. Side pieces along the other direction of the table are arranged in parallel in one direction, through the internal polymerization space part where each space part in the other direction overlaps in the other direction, and in the other direction for each internal polymerization space part. And connecting the four receiving portions for the upper cover plate at the four corners of the inner overlapping space portion, and the corner portions adjacent to the inner overlapping space portion in the space portion having the seismic isolation support on both sides. An upper frame internal coupling mechanism including an upper frame internal coupling body that forms two receiving portions for the upper cover plate at the same height;
The side pieces on each outer end face side adjacent to each other with the space portion in each seismic isolation bearing forming the outer end face of each of the seismic isolation bearings connected so as to cover the outer end face of the space portion, and the lower Two receiving portions for the upper cover plate are formed at both corners on the outer end face side of the space portion, and are located above the respective base positioning connecting bodies on the base side, and the upper base internal connection body is formed. An upper frame end surface coupling mechanism including an upper frame end surface coupling body configured to have four at the same height together with two receiving portions;
Attached to each space part between the above-described upper bases and four receiving portions formed in the internal overlapping space part so as to present a flat surface flush with the upper surface of each upper base, together with the upper surface of the upper base A required number of upper cover plates to form a flat base-isolated floor region;
An undercarriage cover that is attached to the undercarriage positioning connector so as to cover the outer end surface side of the undercarriage positioning connector after removing the temporary fixing piece;
Comprising
Seismic isolation for seismic isolation floors, which enables accurate installation of multiple seismic isolation bearings by eliminating errors or gaps in the distance between the multiple seismic isolation bearings that make up the base isolation floor Two-dimensional connection structure of the bearing. A lower base, an upper base of the same size as the lower base, and a base isolation element disposed between the lower base and the upper base. The base base has a substantially cubic shape, and the base base and the upper base are A plurality of seismic isolation bearings that can be moved relative to each other in a specific direction according to the seismic isolation function of the element, have a space between the seismic isolation bearings adjacent to each other in one direction and the other direction orthogonal thereto. However, it is a two-dimensional connection structure of seismic isolation bearings for seismic isolation floors that are separated and connected in a two-dimensional array to form a base isolation floor region on the upper surface,
Positioning with high precision by adjusting the screwing of the bolts so that each side piece between adjacent bases with the space portion in each seismic isolation bearing forming the outer end face of each seismic isolation bearing has a predetermined size. The required number of lower frames to be connected, and the required number of lower joints to temporarily fix the outer end surfaces of the lower frames and the corners of each side facing the outer end surfaces of the lower mounts so as to have a fixed dimension. An undercarriage positioning connection mechanism comprising:
In the inner region of each of the seismic isolation bearings, the bases are adjacent to each other with a space in one direction, and the side pieces along the other direction of the upper bases face each other in a pair of both seismic isolation bearings. In a mode in which two side pieces along one direction of the upper base are arranged in parallel through one internal polymerization space portion where each space portion in one direction and the other direction overlaps, and for each internal polymerization space portion. An upper frame internal coupling mechanism having a required number of lower bridges to be coupled;
In the inner region of each of the base isolation bearings, the upper bases are adjacent to each other with a space in the other direction and the side pieces along one direction of the upper bases face each other. Side pieces along the other direction of the table are arranged in parallel in one direction, through the internal polymerization space part where each space part in the other direction overlaps in the other direction, and in the other direction for each internal polymerization space part. And connecting the four receiving portions for the upper cover plate at the four corners of the inner overlapping space portion, and the corner portions adjacent to the inner overlapping space portion in the space portion having the seismic isolation support on both sides. An upper frame internal coupling mechanism including an upper bridge that forms two receiving portions for the upper cover plate at the same height;
The side pieces on each outer end face side adjacent to each other with the space portion in each seismic isolation bearing forming the outer end face of each of the seismic isolation bearings connected so as to cover the outer end face of the space portion, and the lower Two receivers for the upper cover plate, which are positioned above the respective lower frames on the gantry side and supported by the respective pillows attached to the side pieces on the outer end surface side at both corners on the outer end surface side of the space portion. An upper base end face connection mechanism comprising an upper skirt that forms four parts at the same height together with two receiving parts formed by the upper base internal connection body,
Mounted on each space between the upper platforms and four receiving portions formed in the internal overlapping space so as to present a flat surface flush with the upper surface of each upper platform, and flat on the upper surface together with the upper platform The required number of upper cover plates to form a seismically isolated floor area,
A lower skirt attached to the lower frame so as to cover the outer end surface side of the lower frame after removing the lower bridge;
Comprising
Seismic isolation for seismic isolation floors, which enables accurate installation of multiple seismic isolation bearings by eliminating errors or gaps in the distance between the multiple seismic isolation bearings that make up the base isolation floor Two-dimensional connection structure of the bearing.

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