JP3262629B2 - building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building provided with a dynamic vibration absorber for suppressing mainly horizontal vibration (rolling) of a building due to wind, earthquake, or traffic vibration.

[0002]

2. Description of the Related Art Japanese Patent Laid-Open No. 63-76932
Some use a dynamic vibration absorber as described in Japanese Unexamined Patent Publication (Kokai) No. H10-26095. This dynamic vibration absorber is configured by installing a combination of weight, spring, and resistance elements in a building.

[0003]

However, in the prior art, the spring and the resistance constituting the dynamic vibration absorber are constituted by different elements. Therefore, the structure is complicated, and it cannot be simply and inexpensively adopted in industrialized houses and the like.

SUMMARY OF THE INVENTION An object of the present invention is to provide a building provided with a dynamic vibration absorber which is simple in construction and can be easily and inexpensively adopted in an industrialized house or the like in order to prevent horizontal vibration of the building .

[0005]

SUMMARY OF THE INVENTION According to the present invention, in suppressing mainly horizontal vibration of a building, a weight is attached to a side surface of a horizontal member, and the horizontal member is horizontally arranged so that the horizontal member is horizontally arranged. A building provided with a dynamic vibration absorber that fixes both ends of a member to a ceiling structure and absorbs vibration by horizontal bending vibration of the horizontal member.
Thus, the above-mentioned transverse member has a center member having a relatively large bending rigidity, a damping material bonded to both sides of the center member, and a relatively low bending rigidity bonded to the outside of each damping material. It is made of a small restraining material.

[0006]

According to the present invention, there are the following functions (1) and (2) . (1) The weight is supported by a horizontal member, and the bending rigidity of the horizontal member is used as a spring element, and internal loss due to bending vibration of the horizontal member is used as a resistance element. In other words, will be horizontal members to act for two elements of the spring and the resistor, it is possible to provide a configuration simple dynamic vibration absorber. Therefore, by forming a weight and a horizontal member so that the natural frequency of the dynamic vibration absorber matches the primary natural frequency in the horizontal direction of the building, and fixing the horizontal member to the ceiling structure, Horizontal vibration (rolling) can be damped by dynamic vibration absorption.

(2) In the above (1) , the horizontal member includes the following:
The characteristics (a) to (c) are required. That is, (a) bending vibration is easily generated in the horizontal direction, (b) internal loss due to bending is increased, and (c) the weight can be safely and securely supported in the vertical direction. However, in the present invention, the above-mentioned characteristic (c) can be provided by securing the overall rigidity by the center member having a relatively large bending rigidity. Further, by attaching the center member and the restraining member on both sides of the damping material, the damping material can be largely sheared and deformed, and the thickness of the damping material can be increased to have the above-mentioned characteristic (b). Further, while the thickness of the vibration damping material is increased in order to provide the characteristics of (b) above, the bending rigidity of the outermost restraining member is made relatively small, so that the overall rigidity becomes excessively large. To keep them from growing
The characteristic (a) can be provided.

[0008]

FIG. 1 is a schematic view showing an embodiment of the present invention. The dynamic vibration absorber 10 is, as shown in FIGS.
It is installed behind the two-story hut of the two-story unit building 1, and suppresses mainly horizontal vibration (rolling) of the building 1. The dynamic vibration absorber 10 is configured by attaching weights 12 and 12 to both sides of a horizontal member 11, respectively.
Are fixed to the ceiling beam of the building 1 so that the horizontal members 11 are arranged horizontally, and the horizontal members 11 absorb vibration by horizontal bending vibration.

The horizontal member 11 includes a center member 21, damping members 22 on both sides of the center member 21, and respective damping members 22, 22.
It is composed of a composite material in which the restraining members 23, 23 on the outer side of 22 are laminated.

The center member 21 is made of a material having relatively large bending rigidity. As the center member 21, for example, an iron plate or the like can be adopted.

The damping members 22 are bonded to both sides of the center member 21. As the damping material 22, for example, a damping rubber material, an asphalt-based damping material, or the like can be used.

The restraining members 23 are bonded to the outside of each of the vibration damping members 22 and have relatively low bending rigidity.
As the restraining member 23, for example, an aluminum plate, a plywood or the like can be adopted.

Note that the center member 21 and the restraining member 23 are
Since the tensile strength is greater than 2, and the entire bridge member 11 is bent and deformed, the vibration damping member 22 is greatly sheared, and as a result, the vibration energy can be absorbed by its large internal loss.

The operation of this embodiment will be described below. (1) The weight 12 is supported by the horizontal member 11, and the bending rigidity of the horizontal member 11 is used as a spring element, and the internal loss due to bending vibration of the horizontal member 11 is used as a resistance element. That is, the horizontal member 1
1 substitutes for the two elements of the spring and the resistance, and the dynamic vibration absorber 10 having a simple configuration can be provided. Therefore, the weight 12 and the horizontal member 11 are formed so that the natural frequency of the dynamic vibration absorber 10 matches the primary natural frequency in the horizontal direction of the building 1, and the horizontal member 11 is fixed to the ceiling structure. By doing
Horizontal vibration (rolling) of the building 1 can be damped by the dynamic vibration absorbing action.

(2) The dynamic vibration absorber 10 includes the horizontal member 11 and the weight 1
Since it is constructed compactly from only 2, it can be easily installed in the back space of the building 1 or the like.

(3) In the above (1) , the horizontal member 11 includes
The following characteristics (a) to (c) are required. That is, (a) bending vibration is easily generated in the horizontal direction, (b) the internal loss due to bending is increased, and (c) the weight can be safely and securely supported in the vertical direction. However, in the present embodiment, the characteristic (c) can be provided by securing the overall rigidity by the center member 21 having a relatively large bending rigidity. Further, by attaching the center member 21 and the restraining member 23 to both sides of the damping material 22, the damping material is greatly sheared and deformed. Can be provided. Further, in order to provide the above-mentioned characteristic (b), the vibration damping material 2
By making the bending stiffness of the outermost restraining member 23 relatively small while increasing the thickness of No. 2, the overall rigidity is suppressed from becoming excessively large, and the characteristic (a) is obtained. Can be provided.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if present, it is included in the present invention. That is, in the present invention, it is optimal to provide the dynamic vibration absorber on the ceiling structure on the top floor. However, the dynamic vibration absorber may be provided on any or all of the ceiling structures on each floor.

[0018]

According to the present invention as described above, according to the present invention, since the vibration reduction the horizontal vibration of the building, a simple configuration, provides a building such as industrialized housing the dynamic vibration reducer is provided that can be adopted simple and convenient and inexpensive can do.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention.

[Description of Signs] 1 2 story building (building) 10 Dynamic vibration absorber 11 Horizontal material 12 Weight 21 Center material 22 Damping material 23 Restraining material

Claims (1)

(57) [Claims] When a horizontal vibration of a building is mainly suppressed, a weight is attached to a side surface of a horizontal member, and both ends of the horizontal member are arranged in a ceiling structure so that the horizontal member is horizontally arranged. fixed to and vibration absorbing by horizontal bending vibration of lateral bridging member kinematic
A building provided with a vibration absorber, wherein the horizontal member has a center member having relatively large bending rigidity, a damping member adhered to both sides of the center member, and an outer member attached to the outside of each damping member. The building is made of a restraining material having a relatively small bending rigidity .