Vibration-damping buildings

Abstract

To provide a vibration damping building in which a vibration damping device including a swing damping mechanism is installed on a surface having an entrance / exit so as not to impair openness and aesthetic appearance.SOLUTION: A vibration damping building 1 includes a frame 12 including a first column 8 and a second column 9 arranged apart from each other in a predetermined direction and a first beam 10 and a second beam 11 extending in a predetermined direction and arranged two or more levels apart from each other; a wall body 14 including a space 15 for a meter box, etc. arranged in the frame 12 and provided inside and an entrance / exit 16 provided for each floor; and a vibration damping device 18 housed in the space 15 and including a swing vibration damping mechanism. The entrance / exit 16 of each level between the first beam 10 and the second beam 11 is arranged to be shifted in a predetermined direction with respect to the entrance / exit 16 of at least one other level between the first beam 10 and the second beam 11 so as not to overlap the vibration damping device 18.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vibration-controlled building having multiple stories and equipped with a vibration control device. [Background technology]

[0002] In buildings with apartments lined up along the girder direction (long side direction), such as slab-type apartment buildings, earthquake-resistant walls are often placed as earthquake countermeasures in the beam direction (short side direction), but various earthquake countermeasures have been proposed for the girder direction.

[0003] As earthquake countermeasures for the girder-running method, proposals have been made to provide earthquake-resistant walls in the girder-running direction as well, to place studs, to incorporate dampers in the studs, and to provide additional columns and beams on the outside of the main frame of a conventional building (outside of a shared passageway or balcony).Patent Documents 1 and 2 describe a vibration control device including a swing vibration control mechanism, that is, a vibration control device that includes a seesaw member (parallel member) rotatably supported on a beam, a pair of dampers that connect the beam and both ends of the seesaw member, and a pair of tie rods (braces) that are rotatably supported at one end on the seesaw member and rotatably supported at the other end near the connection between another beam and the column.

[0004] In design methods using the structural characteristic coefficient (Ds value) used in the Building Standards Act, structures using earthquake-resistant walls have a higher design seismic force than rigid-frame structures. Studs reduce the area of ​​windows or run vertically through them, impairing the openness and aesthetic appeal. Installing columns and beams outside the main frame of a conventional building increases construction costs. Compared to these methods, the vibration control devices described in Patent Documents 1 and 2 improve the response characteristics of buildings by increasing damping, and are less likely to damage the main frame, making them more sustainable. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2010 / 116779 [Patent Document 2] Patent Publication No. 2021-179085 Summary of the Invention [Problem to be solved by the invention]

[0006] However, when the vibration control devices described in Patent Documents 1 and 2 are installed on a wall surface that includes a window, problems arise with openness and aesthetics, just like with partition studs, and when they are installed on a surface that has an entrance or other doorway, the mounting members block the doorway. In view of the above background, an object of the present invention is to provide a vibration-controlled building in which a vibration control device including a swing vibration control mechanism is installed on a surface that has an entrance so as not to impair openness or aesthetics. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, one aspect of the present invention is a vibration-controlled building (1) comprising: a frame (12) including a first column (8), a second column (9) arranged at a distance from the first column in a predetermined direction, a first beam (10) extending in the predetermined direction and joined to the first column and the second column, and a second beam (11) extending in the predetermined direction and arranged at a distance of two or more stories from the first beam and joined to the first column and the second column; a wall (14) arranged within the frame and including spaces (15) provided therein to communicate between the stories within the frame and entrances (16) provided for each story; and a vibration-control device (18, 31, 41) housed in the space to suppress displacement of the second beam relative to the first beam during an earthquake, wherein the vibration-control device is configured to have a pin joint (20) and a vibration-control element (11) that is connected to the frame via the pin joint in an axial direction perpendicular to the structural plane of the frame. a first tie rod (23) having one end joined to the seesaw member rotatably around the axis and the other end joined near the connection between the second beam and the first column rotatably around the axis; a second tie rod (24) having one end joined to the seesaw member rotatably around the axis and the other end joined near the connection between the second beam and the second column rotatably around the axis; and a damper (25) attached between the seesaw member and the first beam to suppress the rotation of the seesaw member around the axis, and the entrances on each story between the first beam and the second beam are positioned offset in the predetermined direction with respect to the entrances on at least one other story between the first beam and the second beam so as not to overlap the vibration control device.

[0008] According to this aspect, the vibration control device is placed in the interior space of the wall, so it is not visible from the outside and does not spoil the aesthetics. Since the entrances to each floor are offset in a predetermined direction from the entrances to at least one other floor, the first and second tie rods of the vibration control device do not cross the entrances. Furthermore, the vibration control device can be installed on the structural surface having the entrance so as not to cross the entrances, so the openness is not spoiled.

[0009] In the above embodiment, the space may be inside the meter box (15).

[0010] According to this aspect, the vibration control device is disposed using the meter box, so that the internal space of the wall body is used with minimal waste.

[0011] In the above aspect, the frame (12) may further include a middle corridor (4) connected to the wall (14) and extending in the predetermined direction, and a third beam (13) located on the opposite side of the middle corridor from the wall and between the first beam (10) and the second beam (11) in the vertical direction, and extending in the predetermined direction, and no beam may be provided between the first beam and the second beam within the frame (12).

[0012] According to this embodiment, since no beam is provided between the first beam and the second beam within the frame, the movement of the vibration control device 18 is not hindered by the beam, and the third beam stabilizes the structure of the vibration-controlled building.

[0013] In the above aspect, the frame (12) may further include a third beam (51) arranged between the first beam (10) and the second beam (11) and extending in the predetermined direction, the third beam (51) including a web (52) parallel to the structural face and a pair of flanges (53) connected to the upper and lower ends of the web, each of the flanges including a plurality of through holes (54), and each of the first tie rod (23) and the second tie rod (24) may be inserted into any of the plurality of through holes.

[0014] According to this aspect, even if the third beam is provided in the frame, the third beam does not hinder the movement of the first and second tie rods.

[0015] In the above aspect, the frame (12) may further include a third beam (61) arranged between the first beam (10) and the second beam (11) and extending in the predetermined direction, and the third beam may include a pair of beam members (62) facing each other in the axial direction, sandwiching the first tie rod (23) and the second tie rod (24).

[0016] According to this aspect, even if the third beam is provided in the frame, the third beam does not hinder the movement of the first and second tie rods. [Effects of the Invention]

[0017] According to the above aspect, it is possible to provide a vibration-controlled building in which a vibration control device including a swing vibration control mechanism is installed on a surface having an entrance / exit so as not to impair the openness or aesthetic appearance. [Brief explanation of the drawings]

[0018] [Figure 1] Plan view of the first floor of the vibration-control building frame according to the embodiment [Figure 2] Plan view of the second floor of the vibration-control building frame according to the embodiment [Figure 3] Cross-sectional view along line III-III in Figure 1 [Figure 4] FIG. 10 is a diagram showing a first modified example of a vibration-controlled building according to an embodiment. [Figure 5] FIG. 10 is a diagram showing a second modified example of the vibration-controlled building according to the embodiment. [Figure 6] FIG. 10 is a diagram showing a third modified example of the vibration-controlled building according to the embodiment. [Figure 7] FIG. 10 is a diagram showing a fourth modified example of the vibration-control building according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, a vibration-controlled building 1 according to an embodiment will be described with reference to the drawings. Fig. 1 is a plan view of the first floor of the column-beam frame 2 of the vibration-controlled building 1, Fig. 2 is a plan view of the second floor of the column-beam frame 2 of the vibration-controlled building 1, and Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1.

[0020] As shown in Figures 1 to 3, the vibration-controlled building 1 is a three-story building equipped with a column-beam frame 2, and is an apartment building in which two rows of dwelling units 3 are lined up in the girder direction on each floor, with a central corridor 4 sandwiched between the two rows of dwelling units 3 in the beam-to-beam direction. A veranda 5 is provided on the opposite side of the central corridor 4 of each dwelling unit 3. The column-beam frame 2 includes columns 6 and beams 7.

[0021] At one side edge of the central corridor 4, the vibration-control building 1 is disposed at the boundary between the dwelling units 3 and the central corridor 4. The building 1 includes a first column 8 and a second column 9, which are spaced apart in the longitudinal direction and adjacent to each other, a first beam 10 connected to the first column 8 and the second column 9 at the first-floor floor, and a second beam 11 connected to the first column 8 and the second column 9 at the third-floor floor (second-floor ceiling). In this embodiment, the first beam 10 is a foundation beam, but it may also be a main beam other than a foundation beam. Each of the first column 8, second column 9, first beam 10, and second beam 11 forms a rectangular frame 12. Within the frame 12, no beam 7 extending in the longitudinal direction is provided at the second-floor floor. At the other side edge of the central corridor 4, columns 6 and beams 7 are arranged on the first floor floor and the third floor floor in a manner similar to that on the other side edge, but on the second floor floor, a third beam 13 is provided that extends in the girder direction and is joined to the column 6.

[0022] The vibration-controlled building 1 further includes walls 14 that are arranged within the frame 12 and separate the dwelling units 3 from the central corridor 4. Inside the walls 14, meter boxes 15 are provided, which are spaces that collect and store meters for electricity, gas, and water. The meter boxes 15 also house the wiring and piping connected to these meters. The walls 14 include entrances 16 on each floor that connect the dwelling units 3 to the central corridor 4, and doors 17 that open and close the entrances 16. The entrances 16 and doors 17 form the entrance to the dwelling units 3.

[0023] The vibration-damping building 1 further includes a vibration-damping device 18 housed in a meter box 15 in the wall 14. The meter box 15 is designed in a shape that can house the vibration-damping device 18. The vibration control device 18 is a device equipped with a so-called oscillating vibration control mechanism, and includes: a seesaw member 21 attached to the first beam 10 via a plate 19 and a pin joint 20 so as to be rotatable around an axis perpendicular to the structural plane of the frame 12; a first tie rod 23 having one end rotatably joined to the seesaw member 21 around the axis and the other end rotatably joined to the upper end of the first column 8 and one end of the second beam 11 via a gusset plate 22 near the joint; a second tie rod 24 having one end rotatably joined to the seesaw member 21 around the axis and the other end rotatably joined to the upper end of the second column 9 and the other end of the second beam 11 via a gusset plate 22; and a pair of dampers 25 attached to the seesaw member 21 and the first beam 10 to suppress rotation of the seesaw member 21 around the axis. The first and second tie rods 23, 24 cross each other above the pin joint body 20, and their lower ends are joined to both ends of the seesaw member 21. The crossing position of the first and second tie rods 23, 24 is located closer to the first beam 10 than the center between the first beam 10 and the second beam 11.

[0024] The plate 19 is preferably made of steel and is placed on the upper surface of the first beam 10. The pin joint 20 is placed on the upper surface of the plate 19 and fixed to the first beam 10 by anchor bolts (not shown) or the like, and supports the seesaw member 21 so that it can rotate around its axis. The pin joint 20 may be formed by, for example, a clevis.

[0025] The seesaw member 21 includes a long member that extends substantially parallel to the extension direction of the first beam 10 in the absence of an earthquake, and a steel material such as a shaped steel can be used as the long member.

[0026] The first tie rod 23 includes two steel rods with forked ends for pin-connection to other members, and a turnbuckle 26 connecting the other ends of the two steel rods. The second tie rod 24 is generally rod-shaped with forked ends for pin-connection to other members, and the rod shape is composed of three steel rods connected by one turnbuckle 26 and one cross turnbuckle 27. The cross turnbuckle 27 has a through-hole (not shown) through which the first tie rod 23 is inserted. It is preferable that the lengths of the first and second tie rods 23, 24 are approximately equal, and that the angles of the first and second tie rods 23, 24 relative to the second beam 11 are approximately equal. It is preferable that the first and second tie rods 23, 24 are adjusted using the turnbuckle 26 and / or the cross turnbuckle 27 to preliminarily introduce tension into both the first and second tie rods 23, 24 so that tension is applied to both the first and second tie rods 23, 24 during non-earthquake situations. The floor slab 28 that crosses the frame 12, i.e., the floor slab 28 of the second floor, is provided with through holes 29 through which the first and second tie rods 23, 24 are inserted. Note that the turnbuckles 26 do not have to be provided in the first and second tie rods 23, 24. Also, the cross turnbuckles 27 may be omitted, and the first and second tie rods 23, 24 may be arranged so that they are slightly offset from each other in the axial direction.

[0027] The pair of dampers 25 are arranged to sandwich the pin joint 20, and are fixed at their lower ends to the first beam 10 and at their upper ends near both ends of the seesaw member 21 in the extension direction. The dampers 25 are vibration dampers, and are, for example, hysteretic dampers such as steel dampers, oil dampers, or viscoelastic dampers. The pair of dampers 25 may be the same or different. The pair of dampers 25 apply damping forces in the vertical direction to both ends of the seesaw member 21.

[0028] The vibration damping device 18 acts to suppress deformation of the frame 12 during an earthquake. The following description focuses on the frame 12.

[0029] During an earthquake, when the second beam 11 is subjected to a seismic force (inertial force) directed toward the right in FIG. 3 relative to the first beam 10, the second beam 11 moves while remaining parallel to the first beam 10, causing the first and second columns 8 and 9 to tilt and / or curve to the right, and the rectangular frame 12 deforms. In the deformed frame 12, the diagonal line connecting the upper right corner and the lower left corner becomes longer and the diagonal line connecting the upper left corner and the lower right corner becomes shorter compared to before deformation. Because the diagonal line connecting the upper right corner and the lower left corner of the frame 12 becomes longer, a tensile force is generated in the second tie rod 24, and this tensile force acts on the frame 12 in a direction that resists the seismic force. Furthermore, the tensile force generated in the second tie rod 24 causes the seesaw member 21 to rotate clockwise around its axis. This rotation increases the distance between the joints of both ends of the first tie rod 23, i.e., the distance between the upper left corner of the frame 12 and one end (the right end in FIG. 3 ) of the seesaw member 21. The increase in the distance between the upper left corner of the frame 12 and the right end of the seesaw member 21 due to this rotation is roughly equal to the decrease in the length of the first tie rod 23 in the direction in which it is compressed due to the shortening of the diagonal line connecting the upper left corner and the lower right corner of the frame 12. Therefore, the length of the first tie rod 23 remains roughly the same as the length during a non-earthquake, and the application of a compressive force to the first tie rod 23 is suppressed.

[0030] Subsequently, when the direction of earthquake vibration changes and the second beam 11 is subjected to a seismic force directed to the left in Figure 3 relative to the first beam 10, a tensile force is generated in the first tie rod 23 due to the damping force from the damper 25, even while the first and second columns 8, 9 are returning from their right-side tilted and / or curved state to a vertical state, and this tensile force acts on the frame 12 in a direction that resists the seismic force.

[0031] When the first and second columns 8 and 9 tilt and / or bend to the left, the diagonal line connecting the upper left corner and the lower right corner of the deformed frame 12 becomes longer and the diagonal line connecting the upper right corner and the lower left corner becomes shorter compared to before deformation. Because the diagonal line connecting the upper left corner and the lower right corner of the frame 12 becomes longer, a tensile force is generated in the first tie rod 23, and this tensile force acts on the frame 12 in a direction that resists the seismic force. In addition, the tensile force generated in the first tie rod 23 causes the seesaw member 21 to rotate counterclockwise around its axis. This rotation widens the distance between the joint between the two ends of the second tie rod 24, i.e., between the upper right corner of the frame 12 and the other end of the seesaw member 21 (the left end in FIG. 3 ). The increase in the distance between the upper right corner of frame 12 and the left end of seesaw member 21 due to this rotation is roughly equal to the decrease in length in the direction compressing second tie rod 24 due to the shortening of the diagonal line connecting the upper right corner and the lower left corner of frame 12, so the length of second tie rod 24 remains roughly the same as its length during non-earthquake conditions, and the application of compressive force to second tie rod 24 is suppressed.

[0032] Subsequently, when the direction of earthquake vibration changes and the second beam 11 is subjected to a seismic force directed to the right in Figure 1 relative to the first beam 10, a tensile force is generated in the second tie rod 24 due to the damping force from the damper 25, even while the first and second columns 8, 9 are returning from their leftward tilted and / or curved state to a vertical state, and this tensile force acts on the frame 12 in a direction that resists the seismic force.

[0033] The vibration control device 18 repeats the above-described movements during an earthquake, thereby preventing excessive deformation of the frame 12.

[0034] On each story, two entrances 16 are provided within one frame 12. The components of the vibration damping device 18 are located in the center between the first and second columns 8, 9 on the first story, and are located near both ends in the girder direction between the first and second columns 8, 9 on the second story. Therefore, the entrances 16 are located near the first and second columns 8, 9 on the first story, and in the center between the first and second columns 8, 9 on the second story, so as to avoid overlapping with the vibration damping device 18 and obstructing people's entrance and exit.

[0035] In order to respond to shaking in the span direction, the vibration control device 18 is also placed inside the protruding member 30 (see Figure 1) provided on the gable face of the vibration control building 1. The axis of rotation of the pin joint 20 and the first and second tie rods 23, 24 of the vibration control device 18 placed on the gable face is in the longitudinal direction. In addition, the vibration control device 18 to respond to shaking in the span direction may be placed inside the partition wall.

[0036] The vibration control device 18 is placed inside the meter box 15, and therefore is not visible from the outside and does not spoil the aesthetic appearance of the vibration-controlled building 1. Furthermore, the meter box 15 is a necessary piece of equipment, and the vibration control device 18 is placed using this necessary equipment, so there is little waste.

[0037] One vibration damping device 18 is arranged across two stories. Therefore, on the first story where the pin joint 20, the seesaw member 21, and the lower parts of the first and second tie rods 23, 24 are arranged, the components of the vibration damping device 18 are arranged in the center between the first and second columns 8, 9, and on the second story where the upper parts of the first and second tie rods 23, 24 are arranged, the components of the vibration damping device 18 are arranged closer to the first and second columns 8, 9. Therefore, by arranging the doorway 16 on the second story offset in the girder direction relative to the doorway 16 on the first story, the vibration damping device 18 can be arranged on the structural face having the doorway 16 so as not to overlap with the doorway 16, and the openness is not impaired. Furthermore, windows are installed on the structural surface facing the opposite side of the central corridor 4 in the dwelling unit 3. If the vibration control device 18 were installed on such a structural surface where windows are primarily installed, the first and second tie rods 23, 24 would cross the windows and impair the openness. However, in this embodiment, the vibration control device is installed on the central corridor 4 side, so the openness is not impaired.

[0038] Alternatively, the first and second beams 10, 11 may be spaced apart by three or more floors, with one vibration damping device 18 spanning three or more floors. In this case, within the frame 12, the entrances 16 on each floor are offset in the girder direction relative to the entrances 16 on at least one other floor so as not to overlap with the vibration damping devices 18. For example, if the first and second beams 10, 11 are spaced apart by four floors, the entrances 16 on the lower two floors may be located near the first and second columns 8, 9 so that their positions in the girder direction coincide with each other, and the entrances 16 on the upper two floors may be located in the center between the first and second columns 8, 9 so that their positions in the girder direction coincide with each other (not shown). Furthermore, within one frame 12, one entrance 16 may be provided on each floor, or three or more entrances 16 may be provided, and the number of entrances 16 on each floor may be the same or different.

[0039] Since there are no beams 7 in the vertical middle of the frame 12 and through holes 29 are provided in the floor slab 28 that crosses the frame 12, the first and second tie rods 23, 24 can be positioned so as not to collide with other components. In addition, since the floor slab 28 that crosses the frame 12 is supported by the third beam 13 that extends on the side of the central corridor 4 opposite to the side where the vibration control device 18 is located, no problems arise with the structure of the vibration-controlled building 1.

[0040] Because the vibration control devices 18 absorb earthquake energy, the column-beam frame 2 is less likely to be damaged and is more sustainable. Because the vibration control devices 18 span multiple floors, high damping performance can be imparted to the vibration-controlled building 1. Because the two dampers 25 of one vibration control device 18 are positioned close to each other, maintenance such as replacement is easy.

[0041] 4 shows a vibration damping device 31 according to a first modification of the above embodiment. The vibration damping device 31 differs from the above embodiment in the shape of the seesaw member 32.

[0042] The seesaw member 32 of the vibration damping device 31 shown in FIG. 4 is composed of a triangular frame material in which three elongated members are rigidly connected at their ends, and the plane defined by the triangular frame is parallel to the structural surface of the frame 12 (see FIG. 3). Steel materials such as structural steel may be used as the elongated members. The seesaw member 32 can be considered a rigid body against earthquake forces acting in the left-right and up-down directions of the structural surface on which it is installed, and may be composed of other shapes and / or other materials as long as it has lengths in the left-right and up-down directions. For example, it may be formed from a triangular steel panel material in a front view. The triangular seesaw member 32 is preferably an isosceles triangle, with the base positioned horizontally and a pair of equal sides positioned so that they approach each other from both ends of the base toward each other.

[0043] The lower ends of the first and second tie rods 23, 24 are joined to the triangular seesaw member 32 near the apex of the upper part of the triangular seesaw member 32 so as to be rotatable about the axis. This joining point is preferably aligned with the pin joint 20 in the vertical direction, and its vertical position is closer to the first beam 10 than the center between the first beam 10 and the second beam 11 (see FIG. 3) and above the rotation axis of the pin joint 20. During non-earthquake situations, the first and second tie rods 23, 24 are preferably positioned on the extensions of the members that make up the sides extending from the apex of the upper part of the triangular seesaw member 32.

[0044] Even with this configuration, the vibration damping device 31 has the same effects as the vibration damping device 18 of the above embodiment.

[0045] 5 shows a vibration damping device 41 according to a second modification of the above embodiment. The vibration damping device 41 differs from the above embodiment in the shape of the seesaw member 42.

[0046] The seesaw member 42 of the vibration damping device 41 shown in Figure 5 has an inverted Y shape when viewed from a direction perpendicular to the structural surface on which the vibration damping device 41 is installed, and is formed by rigidly joining one end of three long steel members such as structural steel members to each other by welding or fastening with fasteners (not shown).

[0047] The rotation axis of the pin joint body 20 is located above the joint between the seesaw member 42 and the damper 25 .

[0048] The seesaw member 42 may have a shape other than an inverted Y-shape, as long as it can be regarded as a rigid body against earthquake forces acting in the left-right and up-down directions on the structural plane on which the vibration control device 41 is installed, has a length in the left-right direction and a length in the up-down direction, and is a shape that allows the rotation axis of the pin joint 20 to be positioned above the connection between the seesaw member 42 and the damper 25. For example, the seesaw member 42 may have a shape that is modified from the shape of the seesaw member 32 of the modified example shown in Figure 4 so that the center of the lower side is concave upward.

[0049] By positioning the rotation axis of the pin joint 20 above the connection between the seesaw member 42 and the damper 25, the distance between the rotation axis of the pin joint 20 and the connection points of the first and second tie rods 23, 24 to the seesaw member 42 is shortened. If the displacement of this connection point during an earthquake is the same, the shorter the distance between them, the larger the rotation angle of the seesaw member 42. Therefore, the displacement of the damper 25 can be amplified more than in the above embodiment without increasing the length of the seesaw member 42 in the left-right direction. This improves the energy absorption efficiency of the vibration control device 41.

[0050] The inverted Y-shaped seesaw member 42 has an inwardly concave inverted Y shape, which is different from the triangular seesaw member 32 shown in Figure 4, so the space in the concave portions on the left and right can be effectively utilized. For example, this space can be used as installation space for jacks or the like for introducing tensile force into the first and second tie rods 23, 24.

[0051] FIG. 6 shows a third beam 51 according to a third modification of the above embodiment. The third beam 51 extends in the longitudinal direction and is joined to the first and second columns 8 and 9 (see FIG. 3) so as to support the floor slab 28 (see FIG. 3) of the second story. The third beam 51 includes an H-shaped steel member consisting of a web 52 parallel to the structural plane of the frame 12 (see FIG. 3) and a pair of flanges 53 connected to the upper and lower ends of the web 52. The center position of the vibration damping device 18 (see FIG. 3) in the inter-beam direction is slightly offset from the web 52. Therefore, the web 52 does not strike the first and second tie rods 23 and 24. The pair of flanges 53 are provided with through-holes 54 through which the first and second tie rods 23 and 24 are inserted. Therefore, even when the third beam 51 is disposed within the frame 12, it does not hinder the movement of the first and second tie rods 23 and 24. In addition, Figure 6 shows the through hole 54 through which the second tie rod 24 is inserted, but the through hole 54 through which the first tie rod 23 is inserted is located at a position that is approximately mirror-image symmetrical to the illustrated through hole 54 with respect to a plane that passes through the center in the girder direction of the third beam 51 within the frame 12 and is perpendicular to the girder direction.

[0052] FIG. 7 shows a third beam 61 according to a fourth modified example of the above embodiment. The third beam 61 extends in the longitudinal direction and is joined to the first and second columns 8, 9 (see FIG. 3) so as to support the floor slab 28 (see FIG. 3) of the second story. The third beam 61 includes a pair of beam members 62 made of H-shaped steel or the like, facing each other in the inter-beam direction. The first and second tie rods 23, 24 pass between the pair of beam members 62. Therefore, even when the third beam 61 is disposed within the frame 12, it does not hinder the movement of the first and second tie rods 23, 24.

[0053] The modified examples shown in Figures 6 and 7 are suitable for buildings (such as slab-type apartment buildings in which dwelling units 3 are provided only on one side of a common passageway) in which the common passageway facing the entrance / exit 16 (see Figure 3) is not a central corridor 4 (see Figure 1), and the side edge of the passageway opposite the side facing the entrance / exit 16 (see Figure 3) is not supported by a pillar 6, and third beams 51, 61 arranged within the frame 12 are required to support the second floor.

[0054] Although the description of specific embodiments has been completed above, the present invention is not limited to the above-described embodiments and modifications, and can be widely modified and implemented. The vibration-controlled building may be a building for purposes other than residential use, such as an office building. The modified vibration control device and the modified third beam may be combined. The vibration-controlled building may be a high-rise building in which the placement of vibration control devices across multiple floors is repeated regularly toward the upper floors. The vibration control device may be installed in a space other than the inside of the meter box within the wall, including a vertical hole connecting each floor within the wall within the frame. In a vibration-controlled building, earthquake countermeasures in the beam direction may involve using walls extending in the beam direction, such as partition walls, as earthquake-resistant walls instead of vibration control devices extending in the beam direction. [Explanation of symbols]

[0055] 1: Vibration-controlled building 8: Pillar 1 9: Pillar 2 10:1st beam 11:Second beam 12: Frame 13,51,61: 3rd beam 14: Wall 15: Meter box (space) 16: Entrance / exit 18, 31, 41: Vibration control device 21, 32, 42: Seesaw members 23: First tie rod 24: Second tie rod 25: Damper 52: Web 53: Flange 54:Through hole 62: Beam member

Claims

1. a frame including a first pillar, a second pillar arranged spaced apart from the first pillar in a predetermined direction, a first beam extending in the predetermined direction and joined to the first pillar and the second pillar, and a second beam extending in the predetermined direction and arranged spaced apart from the first beam by two or more stories and joined to the first pillar and the second pillar; a wall body disposed within the frame, the wall body including a space provided inside the frame so as to communicate with each floor within the frame, and an entrance / exit provided for each floor; A vibration-damping building comprising: a vibration-damping device housed in the space to suppress displacement of the second beam relative to the first beam during an earthquake; The vibration damping device is Pin joint and a seesaw member attached to the first beam via the pin joint so as to be rotatable about an axis perpendicular to the structural plane of the frame; a first tie rod having one end joined to the seesaw member so as to be rotatable about the axial direction and the other end joined to a vicinity of a connection portion between the second beam and the first column so as to be rotatable about the axial direction; a second tie rod having one end joined to the seesaw member so as to be rotatable about the axial direction and the other end joined to a vicinity of a connection portion between the second beam and the second column so as to be rotatable about the axial direction; a damper attached between the seesaw member and the first beam to suppress rotation of the seesaw member about the axial direction, the entrance of each story between the first beam and the second beam is disposed offset in the predetermined direction with respect to the entrance of at least one other story between the first beam and the second beam so as not to overlap the vibration damping device; a central corridor connected to the wall and extending in the predetermined direction; a third beam located on the opposite side of the wall body in the central corridor and between the first beam and the second beam in the vertical direction, and extending in the predetermined direction; A vibration-controlled building, in which no beam is provided between the first beam and the second beam within the frame.

2. The vibration-controlled building according to claim 1 , wherein the space is an interior of a meter box.

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