Vibration-damping building

Abstract

To provide a vibration-damping building capable of transmitting seismic forces acting horizontally between wall columns constituting a multi-story earthquake-resistant wall and efficiently absorbing energy by vibration-controlled beams, even in a case where a floor slab cannot be provided around the wall columns.SOLUTION: A vibration-damping building 1 with which a multi-story earthquake-resistant wall 30 is provided comprises: the multi-story earthquake-resistant wall 30 having a first wall column 31A and a second wall column 31B arranged in the same plane; an axial force transmission beam member 40 erected between the first wall column 31A and the second wall column 31B and transmitting only axial force between the first wall column 31A and the second wall column 31B; and a vibration-damping beam 50 erected between the first wall column 31A and the second wall column 31B and provided with an absorption portion 54 that absorbs energy acting between the first wall column 31A and the second wall column 31B. The vibration-damping beam 50 is provided with an axial force transmission suppression mechanism 55 that suppresses the transmission of axial force between the first wall column 31A and the second wall column 31B.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vibration-controlled building provided with multi-story earthquake-resistant walls. [Background technology]

[0002] One of the methods for improving the earthquake resistance of buildings is the use of multi-story earthquake-resistant walls. For example, Patent Document 1 discloses a vibration control structure consisting of two multi-story earthquake-resistant walls erected apart on the same plane and a number of boundary beams joining the opposing ends of the two multi-story earthquake-resistant walls. In this vibration control structure, each multi-story earthquake-resistant wall is supported by a pin at one point on its lower end so as to be rotatable, and an energy absorbing member is interposed between the other point of each multi-story earthquake-resistant wall and the lower structure. Furthermore, Patent Document 2 discloses a vibration-damping structure in which a plurality of boundary beams are provided at predetermined intervals in the vertical direction between multi-story earthquake-resistant walls that are arranged at regular intervals, and the boundary beams are equipped with bending deformation absorbing dampers that suppress the relative vertical displacement between the multi-story earthquake-resistant walls on both sides, and the multi-story earthquake-resistant walls are equipped with shear deformation absorbing dampers that suppress shear deformation of the structure. Furthermore, Patent Document 3 discloses a vibration-control building which includes a boundary beam with an energy absorbing section arranged between two multi-story earthquake-resistant walls, and a floor slab arranged above the boundary beam and separated from the boundary beam, in which the boundary beam absorbs deformation energy at its energy absorbing section when the two multi-story earthquake-resistant walls undergo rotational deformation.

[0003] In such multi-story earthquake-resistant walls, the horizontal seismic force acting between the wall columns is generally transmitted by the floor slab provided between the wall columns. Here, when the building is, for example, a high-rise apartment building, the building may be constructed such that a plurality of wall columns are arranged at intervals to form a rectangular shape when viewed from above, a core room such as an elevator shaft is arranged inside the multi-story shear wall, and equipment piping and a floor slab for forming a corridor are arranged outside the multi-story shear wall, with dwelling units provided outside the corridor. In such a case, since it is necessary to install equipment piping around the multi-story shear wall, the connection between the equipment piping and the floor slab becomes complicated, and it is not possible to install a floor slab so that it is attached around each space between the wall columns, and seismic force may not be sufficiently transmitted horizontally between the wall columns.

[0004] Furthermore, when the horizontal seismic force described above acts as an axial force on the vibration control beams that transmit between the wall columns, this axial force acts on the dampers installed on the vibration control beams as a force in the axial direction of the vibration control beams. Here, when an earthquake occurs and adjacent wall columns try to tilt in the same direction, a vertical shear force acts on the dampers of the vibration control beams installed between them. Normally, the generation of this shear force would cause energy to be absorbed in the damper section. However, when an axial force such as the one described above acts on the damper in addition to the shear force, the axial force acts in a different direction from the shear force as described above, and this effect may result in the dampers being unable to fully absorb energy. Therefore, there is a demand for a vibration-controlled building that can transmit seismic forces acting horizontally between wall columns and efficiently absorb energy through vibration-control beams, even in cases where it is not possible to install a floor slab around the wall columns that make up a multi-story earthquake-resistant wall. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4167624 [Patent Document 2] JP 2000-328810 A [Patent Document 3] Patent Publication No. 2022-120226 Summary of the Invention [Problem to be solved by the invention]

[0006] The problem that this invention aims to solve is to provide a vibration-controlled building that is capable of transmitting seismic forces acting horizontally between wall columns and efficiently absorbing energy through vibration-control beams, even in cases where a floor slab cannot be provided around the wall columns that make up a multi-story earthquake-resistant wall. [Means for solving the problem]

[0007] The inventors focused on the fact that, in order to create a vibration-controlled building that ensures high vibration-control performance even in areas including floor openings, by arranging a pair of axial force transmission beam members that transmit only axial force across the wall columns, and vibration-control beams that transmit only shear force but not axial force, the seismic forces acting on each floor can be effectively absorbed and controlled without impeding the behavior of the vibration-control devices incorporated in the vibration-control beams, and arrived at the present invention. In order to solve the above problems, the present invention employs the following means. In other words, the vibration-controlled building of the present invention is a vibration-controlled building in which a multi-story earthquake-resistant wall is provided, and the multi-story earthquake-resistant wall has a first wall column and a second wall column arranged on the same plane, an axial force transmission beam member erected between the first wall column and the second wall column and transmitting only axial force between the first wall column and the second wall column, and a vibration-controlled beam erected between the first wall column and the second wall column and having an absorption section that absorbs energy acting between the first wall column and the second wall column, and the vibration-controlled beam is characterized in that it is equipped with an axial force transmission suppression mechanism that suppresses the transmission of the axial force between the first wall column and the second wall column. According to the above-mentioned configuration, an axial force transmission beam member is provided between the first and second wall columns that constitute the multi-story earthquake-resistant wall of a vibration-controlled building, and this axial force transmission beam member transmits axial force, i.e., compressive force and tensile force, in the axial direction in which the axial force transmission beam member extends. Therefore, even if a floor slab is not provided to connect the first and second wall columns, when an earthquake occurs, horizontal forces are sufficiently transmitted between the first and second wall columns by the axial force transmission beam member, and the first and second wall columns can resist earthquakes as a unit. In addition, when an earthquake occurs, the first and second wall columns tend to tilt in the same direction, resulting in a vertical shear force acting on the vibration control beam installed between the first and second wall columns. However, the vibration control beam has an energy absorbing section, which absorbs the energy. Here, when the axial force transmission beam member transmits the axial force as described above, the axial force transmission beam member may expand or contract, even if only slightly. In this case, the horizontal force as described above may also act on the vibration-damping beam as an axial force in the axial direction in which the vibration-damping beam extends. Here, the vibration-damping beam is provided with an axial force transmission suppression mechanism that suppresses the transmission of the axial force between the first wall column and the second wall column, so that the action of the axial force on the absorbing section of the vibration-damping beam that absorbs energy is suppressed. While a shear force acts on the absorbing section in the vertical direction, the action of the axial force, which is a force perpendicular to the vertical direction, on the absorbing section is suppressed as described above, so that the influence of the axial force when the absorbing section absorbs energy is suppressed, and the energy absorption capacity of the absorbing section is fully exhibited. Moreover, the axial force transmission beam member transmits only the axial force. In other words, the transmission of bending stress and shear stress is suppressed in the axial force transmission beam member. Therefore, the yield of the axial force transmission beam member is suppressed. Furthermore, in the case where the axial force transmission beam member is configured to bear the bending stress, when the first wall column or the second wall column tries to tilt, the axial force transmission beam member acts to suppress the tilt by the bending back effect, and as a result, the shear force acting on the vibration control beam is reduced, and the damping effect by the absorbing section is reduced. In contrast, by configuring the axial force transmission beam member to transmit only the axial force as described above, the bending back effect by the axial force transmission beam member is suppressed, and the reduction in the damping effect by the absorbing section is suppressed. The above-mentioned effects work synergistically, allowing the vibration-damping beam to efficiently absorb energy. In this way, even in cases where a floor slab cannot be provided around the wall columns that make up the multi-story earthquake-resistant wall, it is possible to provide a vibration-controlled building that is capable of transmitting seismic forces acting horizontally between the wall columns and efficiently absorbing energy through vibration-control beams.

[0008] In one aspect of the present invention, the axial force transmission beam member comprises a concrete portion and a steel material embedded in an unbonded state within the concrete portion so as to extend axially, the first wall column and the second wall column comprise concrete portions, both ends of the steel material protrude from the ends of the axial force transmission beam member and are fixed to the first wall column and the second wall column, and the concrete portion of the axial force transmission beam member and the concrete portions of the first wall column and the second wall column are abutted against each other and pin-jointed. According to this configuration, both ends of the steel material embedded in an unbonded state inside the concrete part of the axial force transmission beam member are fixed to the first wall column and the second wall column, so that the tensile force can be transmitted between the first wall column and the second wall column via this steel material. In addition, the concrete portion of the axial force transmission beam member and the concrete portions of the first and second wall columns are provided in contact with each other, so that compressive force can be transmitted between the first and second wall columns via the concrete portion of the axial force transmission beam member. Furthermore, since the concrete portion of the axial force transmission beam member and the concrete portions of the first and second wall columns are pin-jointed, the transmission of bending stress and shear force by the axial force transmission beam member between the first and second wall columns is suppressed. For example, even if the steel and the concrete portion inside the axial force transmission beam member are about to be displaced relative to each other due to the elongation of the steel, this relative displacement is permitted because the steel is embedded in the concrete portion in an unbonded state. In this way, the axial force transmission beam member has a structure that does not easily hinder the displacement of the axial force transmission beam member at the pin-jointed portion, so the transmission of bending stress and shear force by the axial force transmission beam member between the first and second wall columns is efficiently suppressed. In this way, the transmission of bending stress and shear force by the axial force transmission beam member is suppressed, and the axial force transmission beam member can be configured to transmit only the axial force.

[0009] In one aspect of the present invention, the vibration-damping beam comprises a first beam portion located on the first wall pillar side and a second beam portion located on the second wall pillar side, the absorption portion is provided on either or both of the first beam portion and the second beam portion, and the axial force transmission suppression mechanism enables the first beam portion and the second beam portion to move relatively in the axial direction of the vibration-damping beam. According to this configuration, the vibration-damping beam includes a first beam portion located on the first wall pillar side and a second beam portion located on the second wall pillar side, and the first beam portion and the second beam portion are provided so as to be relatively movable in the axial direction of the vibration-damping beam by the axial force transmission suppression mechanism. Therefore, even if a compressive force or a tensile force acts on the vibration-damping beam, the first beam portion and the second beam portion move relatively in the axial direction, suppressing the transmission of the compressive force or the tensile force in the vibration-damping beam, and thus suppressing the action of the compressive force or the tensile force on the absorbing portion of the vibration-damping beam provided on either or both of the first beam portion and the second beam portion. Therefore, the energy absorbing capacity of the absorbing portion is fully exerted, and the vibration-damping beam can efficiently absorb energy. Effect of the Invention

[0010] According to the present invention, it is possible to provide a vibration-controlled building that can transmit seismic forces acting horizontally between wall columns and efficiently absorb energy through vibration-control beams, even in cases where a floor slab cannot be provided around the wall columns that make up a multi-story earthquake-resistant wall. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a cross-sectional plan view showing the configuration of a vibration-controlled building in accordance with a first embodiment of the present invention. [Diagram 2] 1 is a front view showing an axial force transmission beam member and a vibration damping beam provided between adjacent first and second wall pillars. FIG. [Diagram 3] 2. FIG. 3 is a cross-sectional plan view taken along the line II in FIG. [Figure 4] 3 is an enlarged view of a portion viewed from an arrow A in FIG. 2, showing the configuration of a vibration-damping beam. [Diagram 5] FIG. [Figure 6] FIG. 4 is a diagram showing a configuration of a main part of a vibration-controlled building according to a modified example of the first embodiment of the present invention. [Figure 7] FIG. 11 is a plan view showing the configuration of an axial force transmission beam member and a vibration-damping beam in a vibration-damping building according to a second embodiment of the present invention. [Figure 8] FIG. 8 is a front view showing the axial force transmission beam member of FIG. 7. [Figure 9] FIG. 11 is a diagram showing the configuration of a main part of a vibration-controlled building according to a modified example of the second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The present invention is a vibration-controlled building 1 that includes axial force transmission beam members 40, 70 that are erected between wall columns 31A, 31B and transmit only axial force but do not transmit bending stress or shear force, and a vibration-control beam 50 that is installed as a pair with the axial force transmission beam members and transmits only shear force. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vibration-controlled building according to an embodiment of the present invention will be described with reference to the accompanying drawings. (First embodiment) FIG. 1 shows a cross-sectional plan view illustrating the configuration of a vibration-controlled building according to a first embodiment of the present invention. 1, the vibration-controlled building 1 is rectangular in plan view as a whole, and includes an outer wall surface 1a formed along a first direction X extending horizontally when viewed from above, and an outer wall surface 1b formed along a second direction Y extending horizontally and perpendicular to the first direction X. The vibration-controlled building 1 is supported on a foundation built in the ground. In this embodiment, the vibration-controlled building 1 is a high-rise building.

[0013] The vibration-controlled building 1 comprises a vibration-controlled frame section 3 provided in the center of the vibration-controlled building 1, and a peripheral frame section 2 provided on the outer periphery of the vibration-controlled building 1 so as to surround the vibration-controlled frame section 3. The outer periphery frame section 2 has a plurality of columns 21 and a plurality of beams 22. The plurality of columns 21 are arranged at intervals in the first direction X and the second direction Y. The plurality of columns 21 each extend in the vertical direction. The plurality of beams 22 are arranged at intervals in the vertical direction on each floor of the vibration-controlled building 1. On each floor, the plurality of beams 22 are erected between the columns 21 adjacent to each other in the first direction X and the second direction Y.

[0014] The vibration-damping frame section 3 has a pair of vibration-damping frames 3A and 3B. The pair of vibration-damping frames 3A and 3B are configured to be axisymmetric when viewed from above, more specifically, to be symmetrical on the left and right in Fig. 1. Each of the vibration-damping frames 3A and 3B includes a multi-story earthquake-resistant wall 30, an axial force transmission beam member 40, and a vibration-damping beam 50. The multi-story earthquake-resistant wall 30 includes a plurality of wall columns 31. In this embodiment, the multi-story earthquake-resistant wall 30 includes wall columns 31X1, 31X2, and 31X3 formed along the same vertical plane that is perpendicular to the second direction Y and includes the first direction X, and wall columns 31Y1, 31Y2, 31Y3, 31Y4, 31Y5, and 31Y6 formed along the same vertical plane that is perpendicular to the first direction X and includes the second direction Y. In each of the vibration-damping structures 3A and 3B, the wall columns 31X1 to 31X3 are provided in pairs with a gap in between in the second direction Y. In Fig. 1, the wall columns 31X1, 31X2, and 31X3 are arranged in this order from the outside to the inside of the vibration-damping building 1. In each of the vibration-damping structures 3A and 3B, the wall columns 31Y1, 31Y2, 31Y3, 31Y4, 31Y5, and 31Y6 are arranged in order from the bottom to the top of the paper in FIG. In each of the vibration-damping structures 3A and 3B, the wall column 31X2 located on the lower side in Fig. 1 is perpendicular to the wall column 31Y2 in a plan view, and the wall column 31X2 located on the upper side in Fig. 1 is perpendicular to the wall column 31Y5 in a plan view.

[0015] In this way, in the vibration-controlled building 1, a space surrounded by the multi-story earthquake-resistant walls 30 of the vibration-controlled framework 3 is formed in the central part when viewed from above. Such a space can be used, for example, as a core room for an elevator shaft or the like. Outside the vibration-controlled framework 3, a corridor C is formed so as to surround the vibration-controlled framework 3. Further outside the corridor C, multiple dwelling units R can be provided facing the corridor C if the vibration-controlled building 1 is, for example, an apartment building. In such a vibration-controlled building 1, it is necessary to install equipment piping around the vibration-controlled framework 3, which results in a complex arrangement between the equipment piping and the floor slabs for forming the corridors C and dwelling units R. Therefore, normally, it is not possible to install a floor slab so that the floor slab is attached to the periphery of the multi-story earthquake-resistant wall 30 of the vibration-controlled framework 3, and seismic forces may not be sufficiently transmitted horizontally between the wall columns 31X1-31X3 and 31Y1-31Y6. Even in such a case, axial force transmission beam members 40 and vibration control beams 50, as described later, are provided to transmit the seismic force acting horizontally between the wall columns 31X1 to 31X3 and 31Y1 to 31Y6 while efficiently absorbing energy.

[0016] Fig. 2 is a front view showing an axial force transmission beam member and a vibration damping beam provided between adjacent first and second wall pillars Fig. 3 is a plan sectional view of the portion viewed from the arrow II in Fig. 2. The axial force transmission beam member 40 and the vibration-damping beam 50 are provided between the first wall column 31A and the second wall column 31B adjacent to each other in each of the first direction X and the second direction Y. Here, the first wall column 31A and the second wall column 31B are adjacent two of the wall columns 31X1 to 31X3 provided along a vertical plane including the first direction X, or the wall columns 31Y1 to 31Y3 provided along a vertical plane including the second direction Y. In Figs. 2 and 3, for example, the wall column 31X1 provided along a vertical plane including the first direction X is the first wall column 31A, and the wall column 31X2 adjacent to the wall column 31X1 is the second wall column 31B. The following similar explanation is also possible for the other two adjacent wall columns 31X2, 31X3, and 31Y1 to 31Y6.

[0017] Each wall pillar 31 (first wall pillar 31A, second wall pillar 31B) has a first vertical portion 311, a second vertical portion 312, and a third vertical portion 313, which are integrally formed. The second vertical portion 312 is provided at a position facing the space S between the first wall pillar 31A and the second wall pillar 31B in the width direction of the first wall pillar 31A and the second wall pillar 31B. The first vertical portion 311 is provided on the opposite side to the second vertical portion 312 in the width direction of the first wall pillar 31A and the second wall pillar 31B. The third vertical portion 313 is provided between the first vertical portion 311 and the second vertical portion 312. Each of the first vertical portion 311 and the second vertical portion 312 is, for example, rectangular in plan view and extends in the vertical direction. Each of the first vertical portion 311 and the second vertical portion 312 includes a plurality of main reinforcements 314 extending in the vertical direction, a shear reinforcement 315 provided to surround the plurality of main reinforcements 314, and a concrete portion 316. A plurality of the shear reinforcements 315 are provided at intervals in the vertical direction. The plurality of main reinforcements 314 and the shear reinforcement 315 are embedded in the concrete portion 316. Each wall column 31 further includes a connecting reinforcement 317 that spans between the first vertical portion 311 and the second vertical portion 312. One end of the connecting reinforcement 317 is embedded in the concrete portion 316 of the first vertical portion 311, and the other end is embedded in the concrete portion 316 of the second vertical portion 312. The connecting bar 317 is embedded in the concrete portion 318 of the third vertical portion 313 between the first vertical portion 311 and the second vertical portion 312. In addition, a steel beam 35 provided along the outer periphery of the vibration-damping frame 3 is provided in the first wall column 31A located on the outer periphery of the vibration-damping frame 3 so as to penetrate perpendicularly in a plan view.

[0018] In the first wall column 31A shown on the left side of Figures 2 and 3, the ends of the axial force transmission beam member 40 and the vibration-damping beam 50 are embedded in the second vertical portion 312. In the end portions 312a, 312b of the second vertical portion 312 where the ends of the axial force transmission beam member 40 and the vibration-damping beam 50 are embedded, the end portions 312a, 312b may be manufactured as precast concrete integrally with the axial force transmission beam member 40 and the vibration-damping beam 50 when they are manufactured. In addition, in this first wall column 31A, a steel beam 35 is embedded in the first vertical portion 311 together with a bracket 44 (described later) joined thereto. The entire first vertical portion 311, or the portion in which the steel beam 35 is embedded, may be manufactured as precast concrete. In this case, after the first vertical portion 311 and the end portions 312a, 312b of the second vertical portion 312, which are manufactured as precast concrete, are installed, concrete can be poured in situ simultaneously into the portions of the second vertical portion 312 other than the end portions 312a, 312b and into the third vertical portion 313, thereby constructing the first wall column 31A as a single unit. Alternatively, the entire first pilaster 31A may be constructed of cast-in-place concrete.

[0019] In the second wall column 31B shown on the right side of Figures 2 and 3, the ends of the axial force transmission beam member 40 and the vibration-damping beam 50 are embedded in the first vertical portion 311 and the second vertical portion 312. In the end portions 311a, 311b, 312a, and 312b of the first vertical portion 311 and the second vertical portion 312 where the ends of the axial force transmission beam member 40 and the vibration-damping beam 50 are embedded, when the axial force transmission beam member 40 and the vibration-damping beam 50 are manufactured, the end portions 311a, 311b, 312a, and 312b may be manufactured as precast concrete integrally with the axial force transmission beam member 40 and the vibration-damping beam 50. In this case, after the end portions 311a, 311b, 312a, and 312b of the first vertical portion 311 and the second vertical portion 312, which are manufactured as precast concrete, are installed, concrete is simultaneously poured in situ into the portions of the first vertical portion 311 and the second vertical portion 312 other than the end portions 311a, 311b, 312a, and 312b, and into the third vertical portion 313, thereby constructing the second wall column 31B as a single unit. Alternatively, the entire second pilaster 31B may be constructed of cast-in-place concrete.

[0020] The axial force transmission beam member 40 is installed between the first wall column 31A and the second wall column 31B. The axial force transmission beam member 40 includes a concrete portion 41 and a steel material 42. The concrete portion 41 extends in the axial direction, i.e., the horizontal direction, of the axial force transmission beam member 40 between the first wall column 31A and the second wall column 31B in a beam-like shape. When viewed from the axial direction, the concrete portion 41 is formed in a rectangular shape in cross section with the long side extending in the beam width direction and the short side extending in the vertical direction. At both ends of the concrete section 41, there are formed end faces 41f (see FIG. 2) that abut against the side faces 31s of the first wall column 31A and the second wall column 31B, chamfered portions 41p formed at both ends of the end face 41f in the vertical direction, and chamfered portions 41q (see FIG. 3) formed at both ends of the end face 41f in the beam width direction. As a result, the concrete section 41 is formed in a tapered shape in which the cross-sectional area gradually decreases toward both sides in the axial direction. To prevent chipping, this concrete section 41 is preferably formed of fiber-reinforced concrete.

[0021] The steel materials 42 are reinforcing bars and extend in the axial direction of the axial force transmission beam member 40. A plurality of the steel materials 42 are arranged side by side in the beam width direction. A plurality of shear reinforcement bars 43 are embedded in the concrete portion 41 at intervals in the axial direction so as to surround the plurality of steel materials 42. Each steel material 42 is embedded in the concrete portion 41 in an unbonded state. Both ends of the steel material 42 protrude from the concrete portion 41 on both axial sides. One end of the steel material 42 protruding from the concrete portion 41 on one axial side, more specifically, on the left side in FIG. 2, is joined to a bracket 44 welded to a steel beam 35 intersecting the first wall column 31A via a coupler 45. Here, the bracket 44 is provided so as to protrude from the steel beam 35 toward the axial force transmission beam member 40. The bracket 44 has a flange 44a extending in a horizontal plane. The coupler 45 is welded to the upper surface of the flange 44a. The steel material 42 is fixed to the concrete portions 316 and 318 in the first wall column 31A. In this manner, each steel material 42 is joined to each of the concrete portions 316, 318 of the first wall column 31A and to each of the steel beams 35 embedded in the first wall column 31A.

[0022] The bracket 44 is positioned so that its tip, to which the coupler 45 is joined, projects from the first vertical portion 311 to the third vertical portion 313. In this manner, the first vertical portion 311 can be manufactured as precast concrete and installed on site, the steel material 42 can be joined to the coupler 45, and then concrete can be poured on site to construct the first wall column 31A.

[0023] The steel material 42 protruding from the concrete portion 41 to the other axial direction side, more specifically, to the right side in Fig. 2, is fixed to the concrete portions 316, 318 of the second wall column 31B. The steel material 42 protruding from the concrete portion 41 to the other axial direction side penetrates the second wall column 31B and is embedded in an unbonded state inside the concrete portion 41 of the other axial force transmission beam member 40. The other end of the steel material 42 of the axial force transmission beam member 40 is fixed to the steel beam 35 embedded in the other wall column 31 (for example, wall column 31X3) via a coupler 45 in the same manner as above. In this manner, each steel member 42 is joined to the concrete portions 316, 318 of the second wall column 31B.

[0024] In this type of axial force transmission beam member 40, both ends of a steel material 42 embedded in an unbonded state inside the concrete section 41 are fixed to the first wall column 31A and the second wall column 31B, so that the tensile force acting on the axial force transmission beam member 40 is transmitted between the first wall column 31A and the second wall column 31B via this steel material 42. In addition, the end face 41f of the concrete portion 41 of the axial force transmission beam member 40 abuts and butts against each of the side surfaces 31s of the first wall column 31A and the second wall column 31B, so that the compressive force acting on the axial force transmission beam member 40 is transmitted between the first wall column 31A and the second wall column 31B via the concrete portion 41.

[0025] Furthermore, as described above, the concrete portion 41 is formed in a tapered shape in which the cross-sectional area gradually decreases toward both sides in the axial direction. In addition, the concrete portion 41 of the axial force transmission beam member 40 and the concrete portion 316 of the first wall column 31A and the second wall column 31B are connected only by the steel material 42, with the concrete portions 41 and 316 being cut off from each other. As a result, the concrete portion 41 of the axial force transmission beam member 40 is pin-joined to each of the first wall column 31A and the second wall column 31B. Therefore, the transmission of bending stress and shear force by the axial force transmission beam member 40 between the first wall column 31A and the second wall column 31B is suppressed. For example, even if the steel material 42 and the concrete portion 41 are to be displaced relative to each other inside the axial force transmission beam member 40 due to the extension of the steel material, the steel material 42 is embedded in the concrete portion 41 in an unbonded state, so this relative displacement is permitted. In this way, the axial force transmission beam member 40 is structured to not easily hinder the displacement of the axial force transmission beam member 40 at the pin joint portion, so that the transmission of bending stress and shear force by the axial force transmission beam member 40 between the first wall column 31A and the second wall column 31B is efficiently suppressed. In this way, the axial force transmission beam member 40 transmits only the axial force between the first wall column 31A and the second wall column 31B. That is, the axial force transmission beam member 40 transmits the axial force between the first wall column 31A and the second wall column 31B, and suppresses the transmission of bending stress and shear force.

[0026] Fig. 4 is an enlarged view of a portion viewed from an arrow A in Fig. 2, and is a diagram showing a configuration of a vibration-damping beam Fig. 5 is a plan view of the vibration-damping beam. As shown in Fig. 2, in this embodiment, the vibration-damping beam 50 is provided below the axial force transmission beam member 40. The vibration-damping beam 50 is installed between the first wall column 31A and the second wall column 31B. The vibration-damping beam 50 is provided to be paired with the axial force transmission beam member 40. As shown in Figs. 4 and 5, the vibration-damping beam 50 includes a first beam portion 51 located on the first wall column 31A side and a second beam portion 52 located on the second wall column 31B side. In addition, the vibration-damping beam 50 includes an absorbing portion 54 and an axial force transmission suppression mechanism 55 .

[0027] The first beam portion 51 and the second beam portion 52 each include an H-shaped steel having a pair of upper and lower flanges 57, 58 and a web 59 provided between the flanges 57, 58. The base ends of the first beam portion 51 and the second beam portion 52 are embedded in the concrete portions 316 of the first wall column 31A and the second wall column 31B.

[0028] The vibration-damping beam 50 includes an absorbing portion 54 . The absorbing portion 54 is provided on either one or both of the first beam portion 51 and the second beam portion 52. In this embodiment, the absorbing portion 54 is provided on, for example, the second beam portion 52. That is, the second beam portion 52 includes the absorbing portion 54. In this embodiment, the absorbing portion 54 is a friction damper. The absorbing portion 54 absorbs energy acting on the vibration-damping beam 50. The absorption section 54 comprises a first plate 542 bolted to the web 59 of the second beam section 52 via a joint plate 541, a tip plate 543 spaced apart from the first plate 542 and located on the first beam section 51 side rather than the first plate 542, and a second plate 545 bolted to the tip plate 543.

[0029] The first plate 542 and the tip plate 543 are each formed along the same vertical plane including the axial direction of the vibration damping beam 50. The second plate 545 is provided on both sides in the beam width direction of the first plate 542 and the tip plate 543. A sliding plate (not shown) made of, for example, stainless steel is provided on one of the surfaces of the first plate 542 and the second plates 545 on both sides in the beam width direction that face each other, and a friction plate (not shown) having a higher friction coefficient than the sliding plate is provided on the other surface. 4, a plurality of elongated holes 542h extending in the vertical direction are formed in the first plate 542. Support plates 547 are provided on both outer sides in the beam width direction of the second plates 545 on both sides in the beam width direction, and bolts 546 are inserted through the support plates 547 and into the elongated holes 542h. In this way, the bolts 546 are fastened via the support plates 547, so that the sliding plates and friction plates provided on the first plate 542 and the second plate 545 are pressed against each other. When a shear force acts on the vibration damping beam 50, the tip plate 543 and the second plate 545 are configured to move relative to the first plate 542 in the vertical direction together with the first beam portion 51 via the axial force transmission suppression mechanism 55 described next.

[0030] The vibration-damping beam 50 is equipped with an axial force transmission suppression mechanism 55 . As shown in Figs. 4 and 5, the axial force transmission suppression mechanism 55 is provided between the first beam portion 51 and the second beam portion 52. More specifically, the axial force transmission suppression mechanism 55 is configured by a tip portion of the first beam portion 51 and a tip portion of the second beam portion 52. The axial force transmission suppression mechanism 55 allows the first beam portion 51 and the second beam portion 52 to move relatively in the axial direction of the vibration damping beam 50. The axial force transmission suppression mechanism 55 includes a pair of guide members 551 provided on the first beam portion 51 and a guided member 548 provided on the tip plate 543 of the second beam portion 52.

[0031] The pair of guide members 551 protrude axially toward the second beam portion 52 from end plates 51p provided at the ends of the first beam portion 51. Each of the pair of guide members 551 includes guide plates 551s provided along a horizontal plane with a gap between them in the vertical direction, and reinforcing ribs 551b that reinforce the guide plates 551s. The guided member 548 protrudes toward the first wall pillar 31A from an end plate 543p provided on the tip plate 543. The guided member 548 has a pair of slide plates 548p provided along a horizontal plane with a gap between them in the vertical direction. The pair of slide plates 548p are joined to each other by a connecting plate 548q provided perpendicular to them. Such a guided member 548 can be formed, for example, by cutting an H-shaped steel of an appropriate size and joining it to the end plate 543p so that the flanges of the H-shaped steel form the pair of slide plates 548p and the web forms the connecting plate 548q. The pair of slide plates 548p are sandwiched from the outside in the up-down direction between the guide plates 551s of the pair of guide members 551. The pair of slide plates 548p are provided so that each of them abuts against the guide plate 551s located on the outside in the up-down direction, and so that the slide plates 548p and the guide plates 551s are slidable relative to each other. In this manner, the guided member 548 having a pair of slide plates 548p and the pair of guide members 551 having a pair of guide plates 551s are arranged so that relative movement in the vertical direction is restricted while relative movement in the axial direction is permitted.

[0032] In such a configuration, when an earthquake occurs, the first wall column 31A and the second wall column 31B tend to tilt in the same direction, and as a result, the vibration control beam 50 provided between the first wall column 31A and the second wall column 31B tends to undergo relative displacement, for example, the first beam portion 51 joined to the first wall column 31A tends to move upward, and the second beam portion 52 joined to the second wall column 31B tends to move downward. At this time, on the first wall pillar 31A side, the guide member 551 provided at the tip of the first wall pillar 31A also tries to move upward. Then, the guided member 548 sandwiched between the guide plates 551s of the pair of guide members 551 so as to abut against the guide plates 551s, and the tip plate 543 and the second plate 545 connected thereto also try to move upward. On the other hand, on the second wall pillar 31B side, the first plate 542 tries to move downward. In this way, the first plate 542 and the second plate 545 try to move in different directions in the up-down direction. Here, the first plate 542 and the second plate 545 are joined by the bolt 546, and the bolt 546 is inserted into the long hole 542h extending in the up-down direction on the first plate 542 side, so that the relative movement between the first plate 542 and the second plate 545 in the up-down direction is permitted. Furthermore, such relative movement in the vertical direction between first plate 542 and second plate 545 is absorbed by the sliding of a sliding plate and a friction plate provided on each of first plate 542 and second plate 545 so as to be pressed against each other. In this way, the absorbing portion 54 absorbs the energy acting between the first wall pillar 31A and the second wall pillar 31B.

[0033] In addition, when the axial force transmission beam member 40 transmits the axial force due to the action already described, the axial force transmission beam member 40 may expand or contract, even if only slightly. In this case, the force transmitted as the axial force by the axial force transmission beam member 40 may also act on the vibration damping beam 50 as a compressive force or tensile force in the axial direction in which the vibration damping beam 50 extends. When such a compressive force or tensile force acts on the vibration-damping beam 50, the pair of guide members 551 fixed to the first wall pillar 31A side and the guided member 548 fixed to the second wall pillar 31B side try to move in different directions in the axial direction. Here, the slide plate 548p and the guide plate 551s are provided so as to be slidable relative to each other, so that the slide plate 548p and the guide plate 551s slide in the axial direction to absorb the compressive force or tensile force. In this way, the axial force transmission suppression mechanism 55 suppresses the transmission of axial force between the first wall pillar 31A and the second wall pillar 31B.

[0034] The vibration-controlled building 1 as described above is a vibration-controlled building 1 in which a multi-story earthquake-resistant wall 30 is provided, and the multi-story earthquake-resistant wall 30 has a first wall column 31A and a second wall column 31B arranged in the same plane, an axial force transmission beam member 40 erected between the first wall column 31A and the second wall column 31B and transmitting only axial force between the first wall column 31A and the second wall column 31B, and a vibration-controlled beam 50 erected between the first wall column 31A and the second wall column 31B and equipped with an absorption section 54 that absorbs energy acting between the first wall column 31A and the second wall column 31B, and the vibration-controlled beam 50 is equipped with an axial force transmission suppression mechanism 55 that suppresses the transmission of axial force between the first wall column 31A and the second wall column 31B. According to the above-mentioned configuration, an axial force transmission beam member 40 is provided between the first wall column 31A and the second wall column 31B constituting the multi-story earthquake-resistant wall 30 of the vibration-controlled building 1, and this axial force transmission beam member 40 transmits axial force, i.e., compressive force and tensile force, in the axial direction in which the axial force transmission beam member 40 extends. Therefore, even if a floor slab is not provided to connect the first wall column 31A and the second wall column 31B, when an earthquake occurs, horizontal force is sufficiently transmitted between the first wall column 31A and the second wall column 31B by the axial force transmission beam member 40, and the first wall column 31A and the second wall column 31B can resist the earthquake as a whole. Furthermore, when an earthquake occurs, the first wall column 31A and the second wall column 31B tend to tilt in the same direction, resulting in a vertical shear force acting on the vibration control beam 50 provided between the first wall column 31A and the second wall column 31B. In response to this, the vibration control beam 50 is provided with an absorbing portion 54 that absorbs energy, and the energy is absorbed by this absorbing portion 54. Here, when the axial force transmission beam member 40 transmits the axial force as described above, the axial force transmission beam member 40 may expand or contract even slightly. In this case, the horizontal force as described above may also act on the vibration-damping beam 50 as an axial force in the axial direction in which the vibration-damping beam 50 extends. Here, the vibration-damping beam 50 is provided with an axial force transmission suppression mechanism 55 that suppresses the transmission of the axial force between the first wall column 31A and the second wall column 31B, so that the action of the axial force on the absorbing section 54 of the vibration-damping beam 50 that absorbs energy is suppressed. While the shear force acts on the absorbing section 54 in the vertical direction, the action of the axial force, which is a force perpendicular to the vertical direction, on the absorbing section 54 is suppressed as described above, so that the influence of the axial force when the absorbing section 54 absorbs energy is suppressed, and the energy absorption capacity of the absorbing section 54 is fully exhibited. Moreover, the axial force transmission beam member 40 transmits only the axial force. In other words, the transmission of bending stress and shear force is suppressed in the axial force transmission beam member 40. Therefore, the yield of the axial force transmission beam member 40 is suppressed. Furthermore, in the case where the axial force transmission beam member 40 is configured to bear bending stress, when the first wall column 31A or the second wall column 31B tries to tilt, the axial force transmission beam member 40 acts to suppress the tilt by the bending back effect, and as a result, the shear force acting on the vibration control beam 50 is reduced, and the damping effect by the absorbing portion 54 is reduced. In contrast, as described above, by configuring the axial force transmission beam member 40 to transmit only the axial force, the bending back effect by the axial force transmission beam member 40 is suppressed, and the reduction in the damping effect by the absorbing portion 54 is suppressed. The above-mentioned effects work synergistically, allowing the vibration-damping beam 50 to efficiently absorb energy. In this way, even in cases where a floor slab cannot be provided around the wall columns 31 that make up the multi-story earthquake-resistant wall 30, it is possible to provide a vibration-controlled building 1 that is capable of transmitting seismic forces acting horizontally between the wall columns 31 and efficiently absorbing energy through the vibration-control beams 50.

[0035] In addition, in the vibration-control building 1, the axial force transmission beam member 40 comprises a concrete portion 41 and a steel material 42 that is embedded in an unbonded state inside the concrete portion 41 so as to extend in the axial direction, and the first wall column 31A and the second wall column 31B comprise concrete portions 316, 318, and both ends of the steel material 42 protrude from the ends of the axial force transmission beam member 40 and are fixed to the first wall column 31A and the second wall column 31B, and the concrete portion 41 of the axial force transmission beam member 40 and the concrete portions 316 of the first wall column 31A and the second wall column 31B are abutted against each other and pin-jointed. According to this configuration, both ends of the steel material 42 embedded in an unbonded state inside the concrete portion 41 of the axial force transmission beam member 40 are fixed to the first wall column 31A and the second wall column 31B. Therefore, the tensile force can be transmitted between the first wall column 31A and the second wall column 31B via the steel material 42. In addition, the concrete portion 41 of the axial force transmission beam member 40 and the concrete portions 316 of the first wall column 31A and the second wall column 31B are provided in contact with each other. Therefore, compressive force can be transmitted between the first wall column 31A and the second wall column 31B via the concrete portion 41 of the axial force transmission beam member 40. Furthermore, since the concrete portion 41 of the axial force transmission beam member 40 and the concrete portions 316 of the first wall column 31A and the second wall column 31B are pin-jointed, the transmission of bending stress and shear force by the axial force transmission beam member 40 between the first wall column 31A and the second wall column 31B is suppressed. For example, even if the steel material 42 and the concrete portion 41 are displaced relative to each other inside the axial force transmission beam member 40 due to the elongation of the steel material, the steel material 42 is embedded in the concrete portion 41 in an unbonded state, so this relative displacement is permitted. In this way, the axial force transmission beam member 40 has a structure that does not easily hinder the displacement of the axial force transmission beam member 40 at the pin-jointed portion, so the transmission of bending stress and shear force by the axial force transmission beam member 40 between the first wall column 31A and the second wall column 31B is efficiently suppressed. In this manner, the transmission of bending stress and shear stress by the axial force transmission beam member 40 is suppressed, and the axial force transmission beam member 40 can be configured to transmit only the axial force.

[0036] In addition, the vibration-damping beam 50 has a first beam portion 51 located on the first wall column 31A side and a second beam portion 52 located on the second wall column 31B side, and an absorption portion 54 is provided on either or both of the first beam portion 51 and the second beam portion 52, and the first beam portion 51 and the second beam portion 52 are arranged to be able to move relatively in the axial direction of the vibration-damping beam 50 by an axial force transmission suppression mechanism 55. According to this configuration, the vibration-damping beam 50 includes a first beam portion 51 located on the first wall column 31A side and a second beam portion 52 located on the second wall column 31B side, and the first beam portion 51 and the second beam portion 52 are provided so as to be relatively movable in the axial direction of the vibration-damping beam 50 by the axial force transmission suppression mechanism 55. Therefore, even if a compressive force or a tensile force acts on the vibration-damping beam 50, the first beam portion 51 and the second beam portion 52 move relatively in the axial direction, thereby suppressing the transmission of the compressive force or the tensile force in the vibration-damping beam 50, and thus the action of the compressive force or the tensile force on the absorbing portion 54 of the vibration-damping beam 50 provided on either or both of the first beam portion 51 and the second beam portion 52 is also suppressed. Therefore, the energy absorbing ability of the absorbing portion 54 is fully exerted, and the vibration-damping beam 50 can efficiently absorb energy.

[0037] (Modification of the first embodiment) The vibration-controlled building of the present invention is not limited to the embodiment described above with reference to the drawings, and various modifications are possible within the technical scope of the invention. FIG. 6 is a diagram showing a configuration of a main part of a vibration-controlled building according to a modified example of the first embodiment of the present invention. In FIG. As shown in FIG. 6, a supporting steel member 60 for supporting the axial force transmission beam member 40 from below may be provided below the axial force transmission beam member 40 shown in the first embodiment. The supporting steel material 60 does not transmit bending stress or shear force, but is provided so as to abut against the underside of the axial force transmission beam member 40. Both axial ends of the supporting steel material 60 are embedded in the first wall column 31A and the second wall column 31B. The supporting steel material 60 supports the concrete part 41 of the axial force transmission beam member 40 from below. By providing such supporting steel material 60, the weight of the axial force transmitting beam member 40 is supported.

[0038] Second embodiment A plan view showing the configuration of an axial force transmission beam member and a vibration control beam of a vibration-controlled building according to a second embodiment of the present invention is shown in Fig. 7. Fig. 8 is a front view showing the axial force transmission beam member of Fig. 7. This embodiment is different from the first embodiment in the structure of the axial force transmission beam member 70. As shown in Fig. 7 and Fig. 8, in the vibration-controlled building 1 in this embodiment, an axial force transmission beam member 70 and a vibration-control beam 50 having the same configuration as in the first embodiment are provided between the first wall column 31A and the second wall column 31B. In this embodiment, a pair of axial force transmission beam members 70 are provided on both sides of the vibration damping beam 50 in the beam width direction.

[0039] The axial force transmission beam member 70 is installed between the first wall column 31A and the second wall column 31B. The axial force transmission beam member 70 includes a steel material 72. The steel material 72 extends in a beam shape in the axial direction of the axial force transmission beam member 70 between the first wall column 31A and the second wall column 31B. The steel material 72 is made of an H-shaped steel, and has a pair of flanges 72a, 72b spaced apart from each other above and below, and a web 72c connecting the pair of flanges 72a, 72b to each other. Both ends of the steel material 72 are supported by the first beam portion 51 and the second beam portion 52 of the vibration control beam 50 via connection members 75A and 75B. The connection members 75A and 75B are welded to the side surfaces of the H-shaped steel that forms the first beam portion 51 and the second beam portion 52. The connection members 75A and 75B have a connection steel material 751 made of a substantially H-shaped steel material that extends in the beam width direction from the H-shaped steel that forms the first beam portion 51 and the second beam portion 52, and a connection plate 752 that is joined to the connection steel material 751 and provided integrally.

[0040] The connecting steel member 751 has a pair of flanges 751a, 751b spaced apart from each other above and below, and a web 751c connecting the pair of flanges 751a, 751b. The web 751c is formed along a vertical plane including the beam width direction. The connection plate 752 is welded to the connection steel material 751. The connection plate 752 is formed along a vertical plane including the axial direction of the axial force transmission beam member 70. The connection plate 752 is provided so as to extend from the connection steel material 751 toward the center in the axial direction of the vibration damping beam 50. The end of the connection plate 752 opposite to the connection steel material 751 is arranged along the web 72c of the steel material 72. At both ends in the axial direction of the steel material 72, the web 72c of the steel material 72 and the connection plates 752 of the connection members 75A and 75B are pin-joined by the connection pins 76. The connection pins 76 extend in the beam width direction, and thus both ends of the steel material 72 are supported rotatably around the connection pins 76 extending in the beam width direction. In this way, the axial force transmission beam member 70 is connected to the first wall column 31A and the second wall column 31B by pin joints on each side of the first wall column 31A and the second wall column 31B via the connecting members 75A, 75B and the first beam portion 51 and the second beam portion 52.

[0041] In such an axial force transmission beam member 70, both ends of the steel material 72 are joined to connecting members 75A, 75B joined to the first beam portion 51 and the second beam portion 52 of the vibration control beam 50, thereby transmitting axial force, i.e., compressive force or tensile force, in the axial direction in which the axial force transmission beam member 70 extends. In addition, since both ends of the steel material 72 of the axial force transmission beam member 70 are pin-jointed, the transmission of bending stress and shear force is suppressed. As a result, the axial force transmission beam member 70 transmits only the axial force between the first wall column 31A and the second wall column 31B. In other words, the axial force transmission beam member 40 transmits the axial force between the first wall column 31A and the second wall column 31B, and suppresses the transmission of bending stress and shear force.

[0042] The vibration-controlled building 1 as described above is a vibration-controlled building 1 in which a multi-story earthquake-resistant wall 30 is provided, and the multi-story earthquake-resistant wall 30 has a first wall column 31A and a second wall column 31B arranged in the same plane, an axial force transmission beam member 70 is erected between the first wall column 31A and the second wall column 31B and transmits only axial force between the first wall column 31A and the second wall column 31B, and a vibration-controlled beam 50 is erected between the first wall column 31A and the second wall column 31B and has an absorption section 54 that absorbs energy acting between the first wall column 31A and the second wall column 31B, and the vibration-controlled beam 50 is equipped with an axial force transmission suppression mechanism 55 that suppresses the transmission of axial force between the first wall column 31A and the second wall column 31B. According to the above-mentioned configuration, an axial force transmission beam member 70 is provided between the first wall column 31A and the second wall column 31B constituting the multi-story earthquake-resistant wall 30 of the vibration-controlled building 1, and this axial force transmission beam member 70 transmits axial force, i.e., compressive force and tensile force, in the axial direction in which the axial force transmission beam member 70 extends. Therefore, even if a floor slab is not provided to connect the first wall column 31A and the second wall column 31B, when an earthquake occurs, horizontal force is sufficiently transmitted between the first wall column 31A and the second wall column 31B by the axial force transmission beam member 70, and the first wall column 31A and the second wall column 31B can resist the earthquake as a whole. Furthermore, when an earthquake occurs, the first wall column 31A and the second wall column 31B tend to tilt in the same direction, resulting in a vertical shear force acting on the vibration control beam 50 provided between the first wall column 31A and the second wall column 31B. In response to this, the vibration control beam 50 is provided with an absorbing portion 54 that absorbs energy, and the energy is absorbed by this absorbing portion 54. Here, when the axial force transmission beam member 70 transmits the axial force as described above, the axial force transmission beam member 70 may expand or contract even slightly. In this case, the horizontal force as described above may also act on the vibration-damping beam 50 as an axial force in the axial direction in which the vibration-damping beam 50 extends. Here, the vibration-damping beam 50 is provided with an axial force transmission suppression mechanism 55 that suppresses the transmission of the axial force between the first wall column 31A and the second wall column 31B, so that the action of the axial force on the absorbing section 54 of the vibration-damping beam 50 that absorbs energy is suppressed. While the shear force acts on the absorbing section 54 in the vertical direction, the action of the axial force, which is a force perpendicular to the vertical direction, on the absorbing section 54 is suppressed as described above, so that the influence of the axial force when the absorbing section 54 absorbs energy is suppressed, and the energy absorption capacity of the absorbing section 54 is fully exhibited. Moreover, the axial force transmission beam member 70 transmits only the axial force. In other words, the transmission of bending stress and shear force is suppressed in the axial force transmission beam member 70. Therefore, the yield of the axial force transmission beam member 70 is suppressed. Furthermore, in the case where the axial force transmission beam member 70 is configured to bear the bending stress, when the first wall column 31A or the second wall column 31B tries to tilt, the axial force transmission beam member 70 acts to suppress the tilt by the bending back effect, and as a result, the shear force acting on the vibration control beam 50 is reduced, and the damping effect by the absorbing portion 54 is reduced. In contrast, as described above, by configuring the axial force transmission beam member 70 to transmit only the axial force, the bending back effect by the axial force transmission beam member 70 is suppressed, and the reduction in the damping effect by the absorbing portion 54 is suppressed. The above-mentioned effects work synergistically, allowing the vibration-damping beam 50 to efficiently absorb energy. In this way, even in cases where a floor slab cannot be provided around the wall columns that make up the multi-story earthquake-resistant wall 30, it is possible to provide a vibration-controlled building 1 that is capable of transmitting seismic forces acting horizontally between the wall columns and efficiently absorbing energy through the vibration-control beams 50.

[0043] In addition, the axial force transmission beam member 70 is a steel material 72 formed from H-shaped steel, and is connected to the first wall column 31A and the second wall column 31B by pin joints on each side of the first wall column 31A and the second wall column 31B. With this configuration, both ends of the steel material 72 forming the axial force transmission beam member 70 are joined to each side of the first wall column 31A and the second wall column 31B, so that tensile and compressive forces can be transmitted between the first wall column 31A and the second wall column 31B via this steel material 72. In addition, since the axial force transmission beam member 70 is configured with pin joints on each side of the first wall column 31A and the second wall column 31B, the transmission of bending stress and shear force between the first wall column 31A and the second wall column 31B is suppressed. In this manner, the transmission of bending stress and shear stress by the axial force transmission beam member 70 is suppressed, and the axial force transmission beam member 70 can be configured to transmit only the axial force.

[0044] In addition, the vibration-damping beam 50 has a first beam portion 51 located on the first wall column 31A side and a second beam portion 52 located on the second wall column 31B side, and an absorption portion 54 is provided on either or both of the first beam portion 51 and the second beam portion 52, and the first beam portion 51 and the second beam portion 52 are arranged to be able to move relatively in the axial direction of the vibration-damping beam 50 by an axial force transmission suppression mechanism 55. According to this configuration, the vibration-damping beam 50 includes a first beam portion 51 located on the first wall column 31A side and a second beam portion 52 located on the second wall column 31B side, and the first beam portion 51 and the second beam portion 52 are provided so as to be relatively movable in the axial direction of the vibration-damping beam 50 by the axial force transmission suppression mechanism 55. Therefore, even if a compressive force or a tensile force acts on the vibration-damping beam 50, the first beam portion 51 and the second beam portion 52 move relatively in the axial direction, thereby suppressing the transmission of the compressive force or the tensile force in the vibration-damping beam 50, and thus the action of the compressive force or the tensile force on the absorbing portion 54 of the vibration-damping beam 50 provided on either or both of the first beam portion 51 and the second beam portion 52 is also suppressed. Therefore, the energy absorbing ability of the absorbing portion 54 is fully exerted, and the vibration-damping beam 50 can efficiently absorb energy.

[0045] (Modification of the second embodiment) The vibration-controlled building of the present invention is not limited to the embodiment described above with reference to the drawings, and various modifications are possible within the technical scope of the invention. FIG. 9 is a diagram showing a configuration of a main part of a vibration-controlled building according to a modified example of the second embodiment of the present invention. As shown in FIG. 9, an axial force transmission beam member 40 as shown in the first embodiment may be further provided on the upper side of the vibration damping beam 50 and the axial force transmission beam member 70 as shown in the second embodiment.

[0046] In the second embodiment, the steel material 72 constituting the axial force transmission beam member 70 is joined to the side surface of the vibration-damping beam 50 via the connection members 75A and 75B, but this is not limited to the above. The connection members 75A and 75B may be configured not to be joined to the side surface of the vibration-damping beam 50, but to be embedded in the concrete parts 316 of the first wall column 31A and the second wall column 31B, and the steel material 72 may be pin-joined to the connection members 75A and 75B. In this case, the axial force transmission beam member 70 and the vibration-damping beam 50 are completely separate and independent. Therefore, similar to the first embodiment described with reference to FIG. 1, the axial force transmission beam member 70 may be provided at a different height from the vibration-damping beam 50.

[0047] (Other variations) In the above embodiment, the absorbing portion 54 is provided with a friction damper, but is not limited to this. For example, the absorbing portion 54 may be provided with a steel damper or the like. In addition, in the above embodiment, an example of an arrangement of a plurality of multi-story earthquake-resistant walls 30 has been shown, but the arrangement, the number of multi-story earthquake-resistant walls 30 arranged on the same plane, etc. can be changed as appropriate. In addition, the configurations described in the above embodiments can be selected or changed as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0048] 1 Vibration-damping buildings 42, 72 Steel materials 30 Multi-story earthquake-resistant wall 50 Vibration-damping beam 31A 1st wall pillar 51 1st beam part 31B 2nd wall pillar 52 2nd beam part 316, 318 Concrete section 54 Absorption section 40, 70 Axial force transmission beam member 55 Power transmission suppression mechanism 41 Concrete Section

Claims

1. A vibration-controlled building having a multi-story earthquake-resistant wall, The multi-story earthquake-resistant wall includes a first wall column and a second wall column arranged in the same plane; an axial force transmission beam member that is installed between the first wall column and the second wall column and transmits only an axial force between the first wall column and the second wall column; a vibration-damping beam that is installed between the first wall pillar and the second wall pillar and has an absorbing portion that absorbs energy acting between the first wall pillar and the second wall pillar; Equipped with The vibration-damping beam includes an axial force transmission suppression mechanism that suppresses the transmission of the axial force between the first wall pillar and the second wall pillar. A vibration-controlled building.

2. The axial force transmission beam member includes a concrete portion and a steel material embedded in the concrete portion in an unbonded state so as to extend in the axial direction, the first pilaster and the second pilaster have concrete portions; Both ends of the steel material protrude from the ends of the axial force transmission beam member and are fixed to the first wall column and the second wall column, The concrete portion of the axial force transmission beam member and the concrete portions of the first wall column and the second wall column are provided in contact with each other and are pin-jointed. The vibration-controlled building according to claim 1.

3. The vibration-damping beam includes a first beam portion located on the first wall pillar side and a second beam portion located on the second wall pillar side, The absorbing portion is provided on either one or both of the first beam portion and the second beam portion, The vibration-controlled building according to claim 1 or 2, characterized in that the first beam portion and the second beam portion are arranged to be relatively movable in the axial direction of the vibration-controlled beam by the axial force transmission suppression mechanism.

Images