JP6143102B2 - Building damping structure and building equipped with the same - Google Patents

Description

  The present invention relates to a vibration control structure for a building for attenuating vibration energy applied to the building due to an earthquake or the like to reduce the response of the building, and a building including the same.

  For example, if a middle- and high-rise building is subjected to an oversized earthquake, the weakest layer of the building will be damaged and the proof stress will begin to decline. Seismic energy (vibration energy) will concentrate on this layer, causing layer collapse, However, the phenomenon that the building collapses due to the layer collapse mode occurs. Even if it does not collapse, the damage of the weakest layer will be enormous, making it difficult to recover by repair.

  In contrast, by installing various vibration control devices (vibration dampers, energy absorption mechanisms) in the frame frame surrounded by the pillars and beams of the building, the response of the building during an earthquake or strong wind has been improved. Countermeasures are often used.

  For example, as shown in FIG. 6, a V-type brace (energy transmission member) 1 is installed in a frame surface T1 of a building T, and an oil damper or the like is attached to the V-type brace 1 and the frame (column member 2, beam member 3). A damping structure A configured by connecting the damping device 4 is widely used (see, for example, Patent Document 1 and Patent Document 2).

  When such a vibration control structure A is installed, if vibration energy acts on the building T and interlayer deformation occurs, the interlayer deformation (displacement, vibration energy) is transferred from the V-type brace 1 to the vibration control device 4. Is transmitted, and vibration energy is absorbed by the damping device 4. Thereby, the vibration energy which acted on the building T by the damping structure A is attenuated, and the response of the building T is reduced.

JP 2012-122228 A JP 2007-126830 A

  However, when the conventional vibration damping structure is applied to a seismic retrofit of a building, a brace or a vibration damping device is generally attached to a steel frame of an existing building by field welding. And since a brace and a vibration damping device are attached by field welding in this way, sparks are scattered or smoke is generated during the installation.

  For this reason, in some cases, it was necessary to perform seismic retrofitting work while restricting the access of users and residents at locations where building vibration control structures were installed. In addition, when performing seismic retrofitting work, it is necessary to work around the pillars of the building, so there may be restrictions on the use of the span (building space) on the opposite side of the place where the damping structure is sandwiched. .

  In view of the above circumstances, even when the present invention is applied to, for example, seismic retrofitting of an existing building, it is possible to reduce the restriction of access to building users and tenants and to impart excellent seismic performance to the building. An object of the present invention is to provide a vibration control structure for a building and a building having the same.

  In order to achieve the above object, the present invention provides the following means.

  The vibration control structure of a building according to the present invention is installed in a frame surface surrounded by column members and beam members of the building and absorbs vibration energy acting on the building to reduce the response of the building. It is a structure that is fixed to the beam member and has a fixed portion disposed along the beam member, and one end connected to both ends of the fixed portion, and pressed to the column member. A displacement transmission frame comprising a pair of displacement transmission portions disposed along the column member, a V-type brace disposed in the frame surface with an end connected to the displacement transmission frame, A vibration damping device is provided, having one end connected to the V-shaped brace and the other end connected to the other end portion of the displacement transmitting portion of the displacement transmitting frame.

  Further, in the vibration damping structure for a building of the present invention, the displacement transmission frame is configured to include a reinforcing portion having a substantially U-shaped cross section, and the reinforcing portion forms the frame surface on one end side. The other end of the displacement transmitting portion of the displacement transmitting frame is fixed to the other end of the displacement transmitting frame while being in contact with or close to one of the pillar members, and the other end is in contact with or close to the other pillar member forming the frame surface. Preferably, the displacement transmitting frame is fixed to the other end of the other displacement transmitting portion and disposed so as to accommodate the vibration damping device therein.

  Furthermore, in the vibration damping structure for a building according to the present invention, it is more desirable that the displacement transmission portion of the displacement transmission frame is fixed to the column member.

  A building according to the present invention includes any one of the above-described vibration damping structures.

  In the vibration damping structure of a building of the present invention and a building equipped with the same, a fixed portion is fixed to the beam member and the displacement transmitting portion is pressed to the column member within the frame surface surrounded by the column member and the beam member. In this state, a displacement transmission frame is provided, and the vibration transmission structure is configured by connecting the V-type brace and the vibration damping device to the displacement transmission frame, thereby acting between the column member and the displacement transmission portion of the displacement transmission frame. Forces (vibration energy, inter-layer displacement) acting on buildings due to earthquakes, strong winds, etc. can be transmitted by compressive forces and frictional forces.

  Thus, the force acting on the building can be transmitted to the vibration damping device such as a rotary inertia mass damper, an oil damper, or a steel damper through the displacement transmission frame and through the V-shaped brace from the displacement transmission frame. It can be absorbed and attenuated by a vibration control device.

  Thereby, the response of the building can be reliably and effectively reduced, and the vibration control performance (seismic performance) of the building can be improved.

  Further, in the vibration damping structure of a building of the present invention and a building equipped with the same, a fixed portion is fixed to the beam member and a displacement transmission portion is provided to the column member in the frame surface surrounded by the column member and the beam member. A displacement transmission frame is provided in a pressed state, and a V-shaped brace and a vibration damping device are connected to the displacement transmission frame to constitute a vibration damping structure, so that a pillar member is sandwiched when installing the vibration damping structure. Work in the adjacent span can be eliminated.

 As a result, all the construction work can be completed within the frame plane, that is, between spans. It can be used for users, residents, etc. in adjacent rooms with pillar members and upper and lower floor rooms with beam members in between. Seismic retrofitting work (installation work of vibration control structure) can be performed with minimal impact.

  Further, the vibration damping structure can be formed with little or no welding operation, and there is less risk of fire and less noise, making it possible to suitably perform earthquake-proof repair work.

  Therefore, according to the vibration control structure of a building of the present invention and a building equipped with the same, for example, even when applied to seismic retrofitting of an existing building, the restrictions on access to building users and residents are reduced. It is possible to give the building excellent earthquake resistance.

  Further, in the building damping structure of the present invention and the building including the same, the displacement transmission frame includes a reinforcing portion having a substantially U-shaped cross section, and the reinforcing portion abuts both ends on the column members. Alternatively, by arranging the damping device inside so as to be close to each other, the force (vibration energy, interlayer displacement) acting on the building due to an earthquake, strong wind, or the like is transferred between the reinforcing portion and the column member. It can be transmitted by the acting compressive force or frictional force. Thereby, the response of the building can be reduced more reliably and effectively, and the vibration control performance (seismic performance) of the building can be improved.

  In addition, the reinforcing part that contributes to the improvement of the seismic performance is formed in a substantially U-shaped cross section, and is arranged so as to accommodate (include) the vibration control device, thereby being as high as the window stand of the building. It becomes possible to store the reinforcement part in the. As a result, it is possible to improve the vibration damping performance of the building without reducing the appearance by providing the reinforcing portion and even when the displacement transmitting frame is configured by including the reinforcing portion. Become.

  Furthermore, in the building vibration control structure of the present invention and the building including the same, the displacement transmission portion of the displacement transmission frame is fixed to the column member by, for example, welding or bolt joining, so that the column member and the displacement transmission frame are fixed. Forces (vibration energy, inter-layer displacement) acting on buildings due to earthquakes, strong winds, and the like can be transmitted not only by compressive and frictional forces acting between the displacement transmitting portions but also by shearing forces.

  As a result, the response of the building can be reduced more reliably and effectively, and the vibration control performance (seismic performance) of the building can be improved.

It is a front view (side view) which shows the vibration damping structure of the building concerning one embodiment of the present invention, and a building provided with this. It is the X1-X1 arrow view figure of FIG. FIG. 2 is an X2-X2 arrow view of FIG. 1. It is the X3-X3 line arrow directional view of FIG. It is the figure used for description of the installation method of the damping structure of the building which concerns on one Embodiment of this invention. It is a front view (side view) which shows the vibration control structure of the conventional building.

  Hereinafter, with reference to FIG. 1 to FIG. 5, a building vibration control structure and a building including the same according to an embodiment of the present invention will be described.

  As shown in FIG. 1, the vibration damping structure B of the present embodiment is within a frame surface T1 surrounded by a column member 2 and a beam member 3 (frame) of a multi-layered building T such as an office building or an apartment. Is installed to absorb and attenuate seismic energy (vibration energy) applied to the building T during an earthquake (or during strong winds), thereby reducing the response of the building T.

  Specifically, the vibration damping structure B of the present embodiment is fixed to the beam member 3 on the upper floor that forms the frame surface T1, and along this beam member 3, that is, in the lateral direction S1 (the material axis direction of the beam member 3). In the state where one end portion is connected to each of the fixing portion 5 and the both ends of the fixing portion 5 arranged along the extending direction) and pressed to the side surface of the column member 2 toward the lateral direction S1. A displacement transmission frame 7 including a pair of displacement transmission portions 6 disposed along the column member 2, that is, along the vertical direction (the material axis direction / extension direction of the column member 2) S <b> 2 is configured. Has been.

  Furthermore, the vibration damping structure B of the present embodiment is disposed by connecting end portions (upper end portions) to the pair of corner portions of the displacement transmission frame 7 in which the fixed portion 5 and the displacement transmission portion 6 are connected. A brace 8, a mounting member 9 provided integrally with the lower end of the V-shaped brace 8, one end of the brace 8 via the mounting member 9, and the other end of the displacement transmitting portion 6 of the displacement transmitting frame 7. The vibration control devices 10 and 11 are respectively connected and arranged on the other end side.

  Further, the displacement transmission frame 7 of the present embodiment uses steel frames such as H-shaped steel for the fixed portion 5 and the displacement transmission portion 6, and the fixed portion 5 has one end connected to the column member 2 of the beam member 3. It is fixedly provided near the joint. In addition, you may make it the fixing | fixed part 5 adhere to the beam member 3 using fixing means 12, such as a high strength volt | bolt, (refer FIG. 5).

  On the other hand, the displacement transmission portion 6 of the displacement transmission frame 7 of the present embodiment is in a state where the side surface (web) is pressed against the side surface of the column member 2 facing the frame surface T1 side, as shown in FIGS. The steel plate 13 is provided between the column member 2 and the column member 2, and the steel plate 13 is welded to be fixed to the column member 2.

  In addition, the displacement transmission part 6 does not necessarily adhere to the column member 2 by welding or the like, and may be disposed in a state of being in close contact with the column member 2 by a pressing force. Further, when the displacement transmitting unit 6 is fixed to the column member 2, the displacement transmitting unit 6 may be fixed to the column member 2 using a fixing means 12 such as a high strength bolt without using welding (see FIG. 5). Further, an interposition member 15 such as a wedge may be interposed between the displacement transmission unit 6 and the column member 2 so as to ensure a compressive force and a frictional force between the column member 2 and the displacement transmission unit 6 ( (See FIG. 5).

  The damping devices 10 and 11 are, for example, a rotary inertia mass damper, an oil damper, a steel damper, and the like, and an attachment member 9 attached to the lower end portion of the V-type brace 8 as shown in FIGS. And the left and right displacement transmission parts 6. At this time, when a vibration damping device 10 including a rotary inertia mass damper and an additional spring is installed on one side and a vibration damping device 11 such as an oil damper is installed on the other side, that is, different types of vibration damping devices 10 and 11 are installed. When the damping structure B is arranged in parallel, the performance and characteristics of each damping device 10, 11 can be utilized to effectively improve the damping performance.

  Further, in the vibration damping structure B of the present embodiment, as shown in FIGS. 1, 3, and 4, the displacement transmission frame 7 is configured to include a reinforcing portion 14 having a substantially U-shaped cross section. . The reinforcing portion 14 is fixed at one end side to the other end portion side of one displacement transmission portion 6 of the displacement transmission frame 7 while being in contact with or close to one pillar member 2 forming the frame surface T1. The side is fixed to the other end side of the other displacement transmission portion 6 of the displacement transmission frame 7 while being in contact with or close to the other column member 2 forming the frame surface T1, and the damping devices 10 and 11 are placed inside. It is arrange | positioned so that it may accommodate.

  Next, an example of a method for installing the vibration damping structure B having the above-described configuration in a building (for example, a method for performing earthquake-proof repair of an existing building) will be described. As shown in FIG. 5, the separated displacement transmission frame 7 having a shape obtained by cutting the intermediate portion of the fixing portion 5 is disposed at a predetermined position.

  Then, a jack is disposed at an intermediate portion of the fixed portion 5 of each divided displacement transmission frame 7, and a compressive force is applied to each fixed portion 5 by this jack to cause each displacement transmission portion 6 to be pressed against the column member 2. In this state, the displacement transmitting portion 6 and the fixing portion 5 are fixed to the existing column member 2 and beam member 3 by welding and bolt joining.

  Further, the fixed portions 5 are connected to each other, the upper end portion of the V-type brace 8 integrally provided with the attachment member 9 at the lower end portion is connected to the displacement transmission frame 7, and the V-type brace 8 is installed in the frame surface T1. . And it connects with the other end part of the free end of each displacement transmission part 6, and the attachment member 9, respectively, and damping device 10,11, such as a rotation inertia mass damper, a spring member, an oil damper, and a steel damper, is installed. Moreover, the reinforcement part 14 is installed with this.

  In the building damping structure B (and the building T including the same) of the present embodiment having the above-described configuration, when vibration energy acts on the building T due to an earthquake or a strong wind, the beam member 3 of the building T is used. According to the displacement of the column member 2, the fixed portion 5 and the displacement transmitting portion 6 of the displacement transmitting frame 7 are displaced, and the displacement of the fixed portion 5 and the displacement transmitting portion 6 is transmitted to the vibration control devices 10 and 11, and vibration energy Is absorbed. In addition, vibration energy is transmitted from the fixed portion 5 connected to the beam member 3 on the upper floor via the V-type brace 8 to the vibration control devices 10 and 11, and is absorbed and attenuated.

  Further, at this time, the displacement transmitting portion 6 of the displacement transmitting frame 7 is pressed against the column member 2 and further fixed by welding or bolting, so that the force acting on the building T by the fixing force or the frictional force is surely applied to the column. It is transmitted between the member 2 and the damping structure B. Thereby, vibration energy is reliably transmitted to the vibration damping devices 10 and 11 and absorbed, and the response of the building T can be reduced.

  Therefore, in the building damping structure B of the present embodiment and the building T including the same, the fixing portion 5 is fixed to the beam member 3 in the frame surface T1 surrounded by the column member 2 and the beam member 3, In addition, a displacement transmission frame 7 is provided in a state where the displacement transmission portion 6 is pressed against the column member 2, and a V-type brace 8 and vibration damping devices 10 and 11 are connected to the displacement transmission frame 7 to constitute a vibration damping structure B. As a result, the force (vibration energy, interlayer displacement) acting on the building T due to an earthquake or strong wind is transmitted by the compressive force or frictional force acting between the column member 2 and the displacement transmitting portion 6 of the displacement transmitting frame 7. be able to.

  Thus, the force acting on the building T is transmitted through the displacement transmission frame 7 and from the displacement transmission frame 7 through the V-type brace 8 to a damping device 10 such as a rotary inertia mass damper, an oil damper, a steel damper, 11, and can be absorbed and attenuated by the vibration control devices 10 and 11.

  Thereby, the response of the building T can be reliably and effectively reduced, and the vibration damping performance (seismic performance) of the building T can be improved.

  Further, in the building damping structure B of the present embodiment and the building T including the same, the fixing portion 5 is fixed to the beam member 3 in the frame surface T1 surrounded by the column member 2 and the beam member 3, In addition, a displacement transmission frame 7 is provided in a state where the displacement transmission portion 6 is pressed against the column member 2, and a V-type brace 8 and vibration damping devices 10 and 11 are connected to the displacement transmission frame 7 to constitute a vibration damping structure B. Thereby, when installing the damping structure B, the operation | work in the adjacent span which pinched | interposed the column member 2 can be made unnecessary.

 As a result, all the construction work can be completed within the frame T1, that is, between the spans. The user and the occupant of the adjacent rooms sandwiching the column member 2 and the upper and lower floor rooms sandwiching the beam member 3 It is possible to perform seismic retrofitting work (installation work of the vibration control structure B) while minimizing the influence on the above.

  In addition, the vibration damping structure B can be formed with little or no welding work, and there is less risk of fire and less noise, making it possible to suitably perform earthquake-proof repair work. .

  Therefore, according to the building damping structure B of this embodiment and the building T equipped with the same, even if it is applied to, for example, seismic retrofitting of the existing building T, access to the users and residents of the building T is prevented. It becomes possible to give the building T excellent seismic performance with less restrictions.

  Moreover, in the building damping structure B of this embodiment and the building T including the same, the displacement transmission frame 7 includes a reinforcing portion 14 having a substantially U-shaped cross section, and the reinforcing portion 14 has both end sides. The force (vibration energy, inter-layer displacement) acting on the building T due to an earthquake, strong wind, or the like by being arranged so as to accommodate the vibration damping devices 10 and 11 while being in contact with or close to the column member 2 respectively. Can be transmitted by a compressive force or a frictional force acting between the reinforcing portion 14 and the column member 2. Thereby, the response of the building T can be reduced more reliably and effectively, and the vibration damping performance (seismic performance) of the building T can be improved.

  Further, the reinforcing part 14 that contributes to the improvement of the seismic performance is formed in a substantially U-shaped cross section, and is disposed so as to accommodate (include) the vibration control devices 10 and 11, so that the window base of the building T The reinforcing portion 14 can be accommodated within a certain height range. Thereby, even if it is a case where the displacement transmission flame | frame 7 is comprised by providing the reinforcement part 14 and comprising the reinforcement part 14, it aims at the improvement of the damping performance of the building T, without causing the external appearance fall. It becomes possible.

  Furthermore, in the building damping structure B of the present embodiment and the building T including the same, the displacement transmission part 6 of the displacement transmission frame 7 is fixed to the column member 2 by, for example, welding or bolt joining, so that the column A force acting on the building T due to an earthquake, a strong wind, or the like can be transmitted not only by a compressive force and a frictional force acting between the member 2 and the displacement transmitting portion 6 of the displacement transmitting frame 7 but also by a shearing force.

  Thereby, the response of the building T can be reduced more reliably and effectively, and the vibration damping performance (seismic performance) of the building T can be improved.

  As mentioned above, although one embodiment of the vibration damping structure of the building which concerns on this invention, and a building provided with this was described, this invention is not limited to said one embodiment, In the range which does not deviate from the meaning, it is appropriate. It can be changed.

DESCRIPTION OF SYMBOLS 1 V type brace 2 Column member 3 Beam member 4 Damping device 5 Fixing part 6 Displacement transmission part 7 Displacement transmission frame 8 V type brace 9 Mounting member 10 Damping apparatus 11 Damping apparatus 12 Fixing means 13 Steel plate 14 Reinforcement part 15 Via Equipment A Conventional vibration control structure B Building vibration control structure S1 Horizontal direction S2 Vertical direction T Building T1 Construction surface

Claims (4)

A building damping structure for reducing the response of the building by absorbing the vibration energy acting on the building, which is installed in the frame surrounded by the column and beam members of the building,
One end is fixed to the beam member and disposed along the beam member, and one end is connected to both end sides of the fixed portion, and the column member is pressed along the column member. A displacement transmission frame comprising a pair of displacement transmission parts disposed
A V-type brace disposed in the frame surface with an end connected to the displacement transmission frame;
A building comprising: a vibration damping device disposed with one end connected to the V-shaped brace and the other end connected to the other end of the displacement transmission portion of the displacement transmission frame. Vibration control structure. In the building damping structure according to claim 1,
The displacement transmission frame is configured to include a reinforcing portion having a substantially U-shaped cross section,
The reinforcing portion is fixed to the other end portion side of one displacement transmission portion of the displacement transmission frame while making one end side contact or approach one column member forming the frame surface, and the other end side, It is disposed so as to be fixed to the other end side of the other displacement transmission portion of the displacement transmission frame while being in contact with or close to the other pillar member forming the frame surface, and to house the vibration damping device inside. Damping structure of a building characterized by In the building damping structure according to claim 1 or 2,
A vibration damping structure for a building, wherein the displacement transmission portion of the displacement transmission frame is fixed to the column member.   A building comprising the vibration-damping structure for a building according to any one of claims 1 to 3.

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