JP2002088957A - Vibration isolation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the rigidity of the whole of a building against slight vibrations in the building whose exterior wall is composed of a curtain wall. SOLUTION: In the vibration isolation structure for the building whose exterior wall is composed of the curtain wall 1, there are constituted a wooden vibration-proof panel 30 for bridging beams 2 located above and below, a joint member 20 for fixedly installing the panel 30 in the beam 2, and a vibration- proof frame 10 constituted by joining the panel 30 and the joint member 20 together by a plurality of screws 25, 25, etc. When the building undergoes slight vibrations due to traffic vibrations, etc., from outside, the frame 10 bridges the beams 2 so as to increase the rigidity of the building. When the building is drastically deformed due to an external factor such as an earthquake, the jointing of the panel 30 and the joint member 20 by the screws 25, 25, etc., is released on the strength of stress applied by the beams 2 in order to release the bridging of the panel 30 and prevent interference with vibration properties of a structural skeleton composed of a columns, the beam 2, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for improving the vibration isolation of a building constituted by a panel-type curtain wall.

[0002]

2. Description of the Related Art A curtain wall is a non-bearing wall which constitutes an outer periphery of a building attached to a building frame via a fastener. The curtain wall is required to have wind resistance, earthquake resistance, shock resistance, heat insulation, sound insulation, watertightness, airtightness, durability, and the like. Regarding the earthquake resistance, the curtain wall is locked with respect to the building frame during a large deformation of the building due to the earthquake, so that safety against falling and breakage of the curtain wall is secured.

[0003]

However, since the curtain wall has a so-called hanging structure attached to a fastener installed on a beam as a building frame to enable the above-mentioned locking, the curtain wall may be exposed to small vibrations from the outside. It can be said that the anti-vibration performance of the outer wall was inferior to that of the bearing wall as a whole.

The above-mentioned minute vibration from the outside may be traffic vibration generated from a general road, an expressway, an elevated Shinkansen, or the like. Buildings near the sources of these traffic vibrations are constantly affected by micro-vibration, so that it is necessary to improve the building rigidity. In particular, in a house, a minute vibration is received even in the early morning or at night, so that it is not possible to sleep comfortably, and there is a case where the livability is impaired. Also, since people are less likely to perceive early shaking and easier to perceive slow shaking, increasing the building's rigidity will increase the frequency of shaking of the building against the same vibration, thereby increasing the bodily sensation of shaking. You can do less.

Therefore, it is conceivable to improve the rigidity of the building by adding pipe columns or the like (columns as a structural frame) to the frame surface defined by columns and beams which are the structural frame of the building. However, the addition of the pipe column causes a problem that the freedom of interior design is narrowed and a problem of cost such as a large increase in material cost. Furthermore, changing the design of the structural skeleton requires dynamic analysis of the seismic response of the structure based on the vibration theory, which not only requires labor for analysis, but also requires the design of the conventional structural skeleton. A drastic change is needed. For example, if columns are added unnecessarily, the rigidity of the building will increase, thereby restricting free swinging of the building during a large earthquake. is there.

In view of the above, it is an object of the present invention to provide a building composed of a curtain wall without changing the structure of a conventional structural body and without changing the vibration characteristics at the time of large deformation of the building. The purpose is to improve the vibration proof property against minute vibration. The curtain wall to which the present invention is applied is a panel method of the construction method.
It refers to a curtain wall, foamed concrete, an ALC plate or the like, and does not cover a metal curtain wall or the like having a cubic construction method.

[0007]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, as described in claim 1, a vibration isolating structure of a building in which an outer wall is formed of a curtain wall, a wooden vibration isolating panel bridging between beams located above and below, and joining the vibration isolating panel to the beam. A joining member, a vibration-isolating frame is constituted by a plurality of screws for fixing the vibration-isolating panel and the joining member, and remains in a fixed state at the time of minute vibration.
At the time of large deformation, the structure is such that the joint between the anti-vibration panel and the joining member by the screw is released.

Further, as described in the second aspect, the structure in which the joint between the vibration isolating panel and the joining member is released by the screw at the time of the large deformation is a deformation of the screw and the vibration isolating panel.

According to a third aspect of the present invention, the anti-vibration panel is used as an interior base.

[0010]

FIG. 1 is a side view and a front sectional view of an anti-vibration frame, FIG. 2 is a front sectional view in a state where a joining member is attached, FIG. 3 is a side view of the same, and FIG. FIG. 5 is a side view showing a state in which the vibration isolating panel is shifted with respect to the member, FIG. 5 is a front sectional view of a curtain wall attaching portion, and FIG.
7 is a detailed view in the same side view, FIG. 7 is a view showing a state of the curtain wall when there is no deformation of the building, FIG. 8 is a view showing a state of locking of the curtain wall when the building is largely deformed, and FIG. FIG. 10 is a diagram illustrating an example of a position where a frame is arranged, FIG. 10 is a diagram illustrating a behavior of an anti-vibration frame during a large deformation of a building, and FIG. 11 is a diagram illustrating an example in which the anti-vibration frame is applied to a partition wall.

First, an outline of a general curtain wall to which the present invention is applied will be described with reference to FIGS. As shown in FIG. 5 and FIG.
1... Correspond to the fasteners 3 for the beam 2 of the building frame.
.. And the fixtures 4. And the fixing tools 4, 4 ...
.. Are drilled, and fixing bolts 6, 6,... For fixing the curtain walls 1, 1,... When a large deformation occurs in the building frame (beam 2) due to an earthquake or the like.・ ・
Are locked so that the curtain walls 1, 1... Are locked by moving freely in the long holes 5, 5,. I have. The fastening torque of the fixing bolts 6, 6,... Is fastened based on building construction standards, and the magnitude of the external force required when changing from the normal state to the locking state depends on the fastening torque. Has been determined.
With the above configuration, when the building is deformed, the state shown in FIG. 7 changes from the normal state shown in FIG. 7 to the locking state shown in FIG. 8, so that the curtain walls 1.1 can follow the deformation of the building frame.

Next, an embodiment of the anti-vibration structure of the present invention will be described. As shown in FIG. 1, the anti-vibration frame 10 includes joining members 20 to be joined to the beams 2.
.. Are composed of vibration-proof panels 30 bridging between the beams 2, 2,...

As shown in FIG. 2, the joining member 20 has a “U” -shaped angle portion 2 for holding the vibration isolating panel 30.
1 and a fixing portion 22 formed in a T-shape below the angle portion 21. A rib 23 is provided between the angle portion 21 and the fixing portion 22 to improve mechanical strength. In addition, the angle part 21 of the joining member 20 is configured to be moved toward the curtain wall 1 side. This is to increase the interior space.

As shown in FIGS. 2 and 3, a plurality of screw holes 24, 24... Are formed on both sides of the angle portion 21 from the outside to the inside (toward the side surface of the anti-vibration panel 30).
Are provided facing each other. In this embodiment, a total of 15 screw holes 24, 24,... Are arranged in two rows, and screws 25, 25,. I'm stuck.

The screws 25 are used because the wooden anti-vibration panel 30 is restored after the screws 25 are screwed in, and the screws 25 are used. In order to prevent the vibrations from falling off from the anti-vibration panel 30 against minute vibrations that are continuously repeated due to traffic vibrations.

As shown in FIG. 2, the fixing portion 22 has elongated holes 26 extending in the longitudinal direction of the beams 2.
Are provided, and mounting holes 13 of the beam 2 are provided.
Are fixed with fixing bolts 27.

As shown in FIG. 1, the anti-vibration panel 30 comprises a frame 32 on which braces 31 are arranged, and two plywoods 33.
In this embodiment, all members are made of wood. Plywood 33, 33 constituting the side surface,
As will be described later, together with the studs 52, it also functions as an interior base when the interior wall is attached (attached). Then, as shown in FIG.
1 accommodates the upper and lower ends of the anti-vibration panel 30, and
25, the angle portion 21 and the vibration-proof panel 30
Are combined to form an anti-vibration frame 10.

Next, an embodiment in which the anti-vibration frame 10 is installed will be described. As shown in FIG. 9, studs 52, 52... Serving as a base of the interior wall are appropriately arranged between the through pillar 50 and the tubular pillar 51 arranged at key points in the building structure. The anti-vibration frame 10 is attached.

As described above, the anti-vibration frame 10
By bridging between the beams 2, the rigidity at the time of minute deformation is improved. Thus, since the stress received from the vibration is small with respect to the minute vibration, the fixed state of the vibration isolating plate 30 and the joining members 20, 20, by the screws 25, 25,. In other words, the rigidity of the building is improved by bridging the vibration-isolating frame 10 between the beams 2 that are the structural skeleton, and the rigidity (vibration-proofing property) of the entire building is improved.

Next, as shown in FIG. 10, when the building is subjected to an even greater external force, the beams 2, 2,.
・ ・ Large horizontal stress is generated in. At this time, first, the joining members 20 move horizontally with respect to the fixing bolts 27 of the beams 2.2 by the length of the long holes 26. ) To absorb the horizontal stress caused by the external force of the beams 2.

Further, when the external force becomes large at the time of large deformation of the building and becomes unacceptable due to the size of the long holes 26,...
Due to the shear stress between the vibration isolating frame 10 and the vibration isolating frame 30, as shown in FIG. , The screws 25 are themselves bent to receive bending stress. So-called deformation occurs. In this way, the screws 25 are detached, and the connection between the joining member 20 and the anti-vibration panel 30 is released. That is, a shear fracture occurs at the joint between the vibration isolating panel 30 and the joining members 20, and the two members are separated from each other.
In other words, the beams 2.2 are broken by breaking the anti-vibration panel 30 or bending the screws 25.
It absorbs the horizontal stress of the (structural body). That is, when the external force is at a level larger than the minute vibration, the vibration isolating frame 10 exhibits a function of absorbing the horizontal stress of the beams 2 and 2 and improves the vibration isolating property of the whole building.

When the building undergoes a large deformation (a large earthquake or the like), as shown in FIG.
The fixation (bridge) between the beams 2 and 2 is broken, and each beam 2
2 exhibits the same vibration characteristics as when the anti-vibration frame 10 is not present. That is, when the building is greatly deformed,
Since the anti-vibration frame 10 does not function to improve the seismic resistance, it does not restrict the deformation of the structural skeleton, and can prevent the collapse of the building that can be caused by local concentration of stress. The arrow in the figure is due to external force.
2 schematically shows a state in which the beams 2 and the vibration isolating frame 10 are deformed.

The above embodiment is an embodiment mounted on the inner side of the curtain walls 1, 1..., That is, on the inner side of the outer wall. It can be applied. For example, FIG.
As shown in (1), it is also possible to configure as a base of the interior wall 36 of the partition wall 35. When configuring the partition wall 35, the angle part 21 is configured to be located at the center of the joining member 20, and the center is partitioned from the beams 2. This is because there is no need to shift to the outside (the curtain wall 1,... Side) as in the above-described configuration arranged outside.

[0024]

Since the present invention is constructed as described above, the following effects can be obtained. That is, as in claim 1, a wooden anti-vibration panel 30 that bridges between the beams 2 and 2 that is positioned above and below, which is a vibration-isolating structure of a building whose outer wall is composed of the curtain walls 1. The anti-vibration panel 30
Member 20 for joining the vibration-proof panel 3 to the beam 2
0 and a plurality of screws 25 for fixing the joining members 20.
Constitute the anti-vibration frame 10 with small vibrations, and remain in a fixed state at the time of micro-vibration, and at the time of large deformation, the joining between the anti-vibration panel 30 and the joining members 20 by the screws 25, 25 is released. The structure makes it possible to improve the rigidity between the beams 2 at the time of minute vibrations, and overcomes (eliminates) the weakness of rigidity against minute vibrations, which is an adverse effect by configuring with the curtain walls 1. can do. That is, it is possible to secure the livability even in a house close to the vibration source by reducing the shaking felt by the occupants due to the traffic vibration. At the time of a large deformation of the building due to an earthquake, a typhoon, or the like, the fixing (bridging) of the anti-vibration panel 30 is released, which affects the vibration characteristics of the conventional structural frame (beam 2, through column 50, tube column 51, etc.). There is no. That is, since the design of the structural skeleton is not changed, it can be applied to the conventional design of the structural skeleton without performing dynamic analysis of the structural seismic response based on the vibration theory. In addition, since it can be attached to an existing structural body, there is no problem that the freedom of interior design is narrowed or a problem such as a large increase in material cost occurs.

Further, as described in claim 2, the screw 2 between the vibration isolating panel 30 and the joining members 20 at the time of the large deformation.
The structure in which the joining by 5.25...
.. 25 and the deformation of the anti-vibration panel 30, the anti-vibration frame 10 is formed separately from the structural body even when the anti-vibration panel 30 is damaged such as a crack. Yes, it can be easily replaced.

Further, since the anti-vibration panel is used as an interior base, it is possible to improve the rigidity of the building against minute vibrations and at the same time perform the function of the interior base.

[Brief description of the drawings]

FIG. 1 is a side view and a front sectional view of an anti-vibration frame.

FIG. 2 is a front sectional view showing a state where a joining member is attached.

FIG. 3 is a side view of the same.

FIG. 4 is a side view illustrating a state in which the vibration isolating panel is shifted with respect to the joining member when the building is largely deformed.

FIG. 5 is a front sectional view of a curtain wall mounting portion.

FIG. 6 is a detailed view similarly seen from the side.

FIG. 7 is a diagram showing a state of a curtain wall in a state where there is no deformation of a building.

FIG. 8 is a diagram showing a state of locking of a curtain wall at the time of large deformation of a building.

FIG. 9 is a diagram illustrating an example of a position in which an anti-vibration frame is arranged.

FIG. 10 is a diagram illustrating the behavior of the anti-vibration frame during a large deformation of the building.

FIG. 11 is a diagram illustrating an embodiment in which a vibration isolating frame is applied to a partition wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Curtain wall 2 Beam 3 Fastener 4 Fixture 5 Long hole 6 Fixing bolt 10 Vibration-proof frame 11 Curtain wall 13 Hole 20 Joining member 21 Angle part 22 Fixing part 23 Rib 24 Screw hole 25 Screw 26 Long hole 27 Fixing bolt 30 Vibration prevention Panel 31 Bracing 32 Frame 33 Plywood 35 Partition wall 36 Interior wall 50 Through column 51 Pipe column 52 Column

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E001 DC01 DG01 FA06 GA45 HC02 KA05 KA07 LA15 2E002 FB07 FB16 JA01 JA02 JB02 JB12 JB14 MA07 MA12 MA13 NA01 NB06 NC01 PA04 PA08 RA03 RB01 TA01 TA02 WA01 XA01 XA03

Claims (3)

[Claims] An anti-vibration structure for a building in which an outer wall is formed of a curtain wall, a wooden anti-vibration panel bridging between beams located above and below, a joining member for joining the anti-vibration panel to the beam, A vibration isolating frame is constituted by a plurality of screws for fixing the vibration isolating panel and the joining member, and remains fixed in the case of minute vibration, and the joint between the vibration isolating panel and the joining member is released in the case of large deformation. Anti-vibration structure. 2. The anti-vibration structure according to claim 1, wherein the structure in which the joining between the anti-vibration panel and the joining member by the screw is released during the large deformation is a deformation of the screw and the anti-vibration panel. 3. The anti-vibration structure according to claim 1, wherein the anti-vibration panel is used as an interior base.