JP2009057738A - Vibration-proof structure of structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration-proof structure of a structure interposed between two structures self-standing with the possibility of coming into contact with each other by the vibrations thereof as in a mechanical multistory parking garage in which parking garage steel frames self-stand inside a building skeleton, and properly preventing vibration from being transmitted between both structures normally and properly relieving the impact of collision between the structures in an earthquake. <P>SOLUTION: A magnet 21 and a magnet 22 are so attached to the vibration-proof bracket body 14 of the parking garage steel frame 11 and the building skeleton 10 as to rebel against each other, respectively. Normally, the gap D is secured between the building skeleton 10 and the vibration-proof bracket 13 by the repulsion of the magnet 21 and the magnet 22, and the vibration of the parking garage steel frame 11 is prevented from being transmitted to the building skeleton 10. In an earthquake, the magnet 21 is brought into contact with the magnet 22, and a stress is transmitted between the parking garage steel frame 11 and the building skeleton 10 while relieving the impact of the collision. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is interposed between two adjacent self-supporting structures, such as a case where a mechanical multistory parking lot is provided inside a building (a built-in mechanical multistory parking lot). The present invention relates to a vibration isolating structure for a structure that prevents vibration transmission between the two structures.

  For example, in a built-in type mechanical multistory parking garage where a mechanical multistory parking lot (steel frame) is provided inside a building (architecture skeleton), the building slab and the parking lot steel frame collide due to vibration such as an earthquake. In order to mitigate the impact when the vibration is applied, a vibration isolating member (anti-vibration bracket) is incorporated in a place where there is a possibility of collision.

  This anti-vibration bracket stress transmission mechanism allows the anti-vibration bracket of the parking lot steel frame to come into contact with the building frame only during an earthquake, and normally prevents the vibration of the parking frame steel frame from being transmitted to the building frame. In general, a gap is provided between the vibration-proof bracket of the car frame steel frame and the building frame (see, for example, Patent Document 1).

  FIG. 3 shows an example of such an anti-vibration structure such as a built-in type mechanical multi-story parking lot. FIG. 3 (a) is a plan view, and FIG. 3 (b) is a plan view in FIG. AA arrow view and FIG.3 (c) are BB arrow views in FIG.3 (b).

  As shown in FIG. 3, a parking lot steel frame 11 is installed in a self-supporting manner inside the building frame 10, and a vibration isolation bracket 13 is provided at the tip of the beam 12 of the parking lot frame 11 adjacent to the building frame 11. It has been. The anti-vibration bracket 13 includes an anti-vibration bracket main body 14 attached to the tip of the beam 12 and an anti-vibration rubber (collision mitigation rubber) 15 attached to a location facing the building housing 11 of the anti-vibration bracket main body 14. Yes. A predetermined gap δ (for example, 10 mm to 15 mm) is provided between the building housing 10 and the vibration isolating bracket 13 (that is, between the building housing 10 and the vibration isolating rubber 15).

Thereby, at the time of an earthquake, the building housing 10 and the vibration-proof bracket 13 (vibration-proof rubber 15) are in contact so that stress is transmitted between the parking frame steel frame 11 and the building housing 10 while mitigating the impact of the collision. At the same time, the vibration of the parking lot steel frame 11 is prevented from being transmitted to the building frame 10 by the gap δ between the building frame 10 and the vibration isolation bracket 13 (vibration isolation rubber 15).
JP-A-9-25736

  As described above, a gap δ of about 10 mm to 15 mm is provided between the vibration isolating bracket 13 of the parking lot steel frame 11 and the building frame 10, but conventionally, no mechanism for holding the gap δ is provided. Therefore, even during normal times, depending on the degree of shaking of the parking lot steel frame 11, it may be difficult to maintain the gap δ between the anti-vibration bracket 13 and the building frame 10. Therefore, the vibration-proof bracket 13 may contact the building housing 10 at normal times, and vibration of the parking lot steel frame 11 may be transmitted to the building housing 10.

  The present invention has been made in view of the circumstances as described above, and has two structures that can be brought into contact with each other by vibration, such as a built-in mechanical multilevel parking lot. An anti-vibration structure for a structure that is interposed between the two structures during normal operation and that can appropriately mitigate the impact of collision between the two structures during an earthquake. It is intended to provide.

  In order to solve the above problems, the present invention has the following features.

  [1] A vibration-proof structure of a structure that is interposed between two structures that are capable of contacting each other by vibrations, and magnets repel each other in the two structures. The vibration isolating structure of the structure is configured to suppress contact between two structures by a repulsive force between the magnets.

  [2] The vibration-proof structure for a structure according to the above [1], wherein a rubber body for reducing the impact of a collision is added between the two structures.

  [3] The structure according to [1] or [2], wherein one structure is a building frame and the other structure is a parking frame steel frame installed inside the building frame. Anti-vibration structure of the body.

  In the present invention, the magnetic force (repulsive force) of the magnets repelling each other normally prevents contact between the two structures to ensure a predetermined gap, and vibration of one structure is applied to the other structure. It is possible to prevent transmission. On the other hand, during an earthquake in which a force greater than the magnetic force (repulsive force) of the magnet acts, the magnets can come into contact with each other, and stress can be transmitted between the two structures while reducing the impact of the collision.

  A vibration isolating structure for a structure according to an embodiment of the present invention will be described with reference to the drawings. Here, the case where the structure is a built-in type mechanical multi-story parking lot will be described as an example, but the structure is also a case of a three-dimensional warehouse or the like in which a high-rise rack is independently arranged inside an external structure. It is the same.

(First embodiment)
1A and 1B show a vibration-proof structure of a built-in mechanical multilevel parking garage according to a first embodiment of the present invention. FIG. 1A is a plan view, and FIG. FIG. 1A is a view taken along the line AA in FIG. 1A, and FIG. 1C is a view taken along the line BB in FIG.

  A parking lot steel frame 11 is installed in a self-supporting manner inside the building frame 10, and an anti-vibration bracket 13 is provided at the tip of the beam 12 of the parking frame frame 11 adjacent to the building frame 11.

  In this embodiment, the vibration-proof bracket 13 includes a vibration-proof bracket main body 14 attached to the tip of the beam 12 and a magnet 21 attached to a location facing the building housing 11 of the vibration-proof bracket main body 14. ing. In addition, a magnet 22 is attached to the building housing 11 so as to face the magnet 21 of the vibration-proof bracket 13. Here, the magnetic poles of the opposing surfaces of the magnet 21 and the magnet 22 are the same, and are installed so as to repel each other.

  By adopting the vibration-proof structure as described above, in this embodiment, the magnetic force (repulsive force) between the magnet 21 and the magnet 22 that repel each other is normally used between the building housing 10 and the vibration-proof bracket 13 (that is, A predetermined distance D (for example, 10 mm to 15 mm) is secured between the magnet 22 of the building housing 10 and the magnet 21 of the vibration isolation bracket 13. As a result, it is possible to appropriately prevent the vibration of the parking lot steel frame 11 from being transmitted to the building frame 11 at the normal time.

  On the other hand, during an earthquake in which a force greater than the repulsive force between the magnet 21 and the magnet 22 is applied, the magnet 21 and the magnet 22 come into contact with each other between the parking lot steel frame 11 and the building frame 10 while reducing the impact of the collision. Stress is transmitted.

  In the above description, the vibration isolation bracket 13 is attached to the parking lot steel frame 11 so as to face the building frame 10. However, the vibration isolation bracket 13 is attached to the building frame 10, and the parking frame frame 11 is attached to the parking frame steel frame 11. You may make it oppose.

(Second Embodiment)
FIG. 2 shows a vibration-proof structure of a built-in mechanical multilevel parking garage according to a second embodiment of the present invention. FIG. 2 (a) is a plan view, and FIG. 2 (b) is FIG. FIG. 2A is a view taken along the line AA in FIG. 2A, and FIG. 2C is a view taken along the line BB in FIG.

  In the second embodiment, a vibration isolating rubber (collision alleviating rubber) 15 is added to a portion of the anti-vibration bracket body 14 facing the building housing 11 in the first embodiment described above. A predetermined gap δ (for example, 10 mm to 15 mm) is provided between the building housing 11 and the vibration isolating rubber 15.

  By adopting the vibration isolating structure as described above, in this embodiment, the magnetic force (repulsive force) between the magnet 21 and the magnet 22 that repel each other is normally used between the building housing 10 and the vibration isolating bracket 13. A predetermined interval D and gap δ are secured. As a result, it is possible to appropriately prevent the vibration of the parking lot steel frame 11 from being transmitted to the building frame 11 at the normal time.

  On the other hand, in the event of an earthquake in which a force greater than the repulsive force between the magnet 21 and the magnet 22 is applied, in addition to the magnet 21 and the magnet 22 being in contact, the anti-vibration rubber 15 and the building housing 10 are in contact, thereby further colliding. Stress is transmitted between the parking frame steel frame 11 and the building frame 10 while mitigating the impact.

  In the above description, the anti-vibration rubber 15 is attached to the parking lot steel frame 11 so as to face the building frame 10. However, the anti-vibration rubber 15 is attached to the building frame 10 and the anti-vibration frame 15 is attached to the parking frame frame 11. You may make it oppose. Or you may attach the anti-vibration rubber | gum 15 to each of the building frame 10 and the parking lot steel frame frame 11 so that it may mutually oppose.

  In the first and second embodiments, the building-in type mechanical parking lot has been described as an example. However, as described above, the present invention is not limited to this, and the mutual vibrations. It can be applied to two structures that stand on their own with the possibility of contact.

It is explanatory drawing of the 1st Embodiment of this invention. It is explanatory drawing of the 2nd Embodiment of this invention. It is explanatory drawing of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Architectural frame 11 Parking frame steel frame 12 Beam 13 Anti-vibration bracket 14 Anti-vibration bracket body 15 Anti-vibration rubber (collision mitigation rubber)
21 magnet 22 magnet

Claims (3)

  A vibration isolating structure for a structure that is interposed between two self-supporting structures that have the possibility of contact by mutual vibration, and is installed so that the magnets repel each other in the two structures. An anti-vibration structure for a structure, wherein the repulsive force between the magnets prevents contact between the two structures.   2. The vibration isolating structure for a structure according to claim 1, wherein a rubber body for alleviating the impact of a collision is added between the two structures.   3. The vibration-proof structure for a structure according to claim 1, wherein one of the structures is a building frame, and the other structure is a parking frame steel frame installed inside the building frame.

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