JP4674838B2 - Vibration control mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration damping mechanism that applies a damping force to the relative movement of an upper beam and a lower beam of a structure such as a house.
[0002]
[Prior art]
As a conventional damping mechanism, a damping wall panel as disclosed in JP 2000-45563 is known. This damping wall panel generally has a plate-like upper frame fixed to the upper beam, a plate-like lower frame fixed to the lower beam, and a hydraulic damper provided between the upper and lower frames. It is.
[0003]
Here, in general, a hydraulic damper includes a cylinder filled with oil, a piston that defines the inside of the cylinder, a piston rod that is attached to the piston and protrudes from one end of the cylinder, and generates a damping force provided to the piston. The mechanism is generally composed of a mechanism, and when the piston is stopped, no damping force is generated, and the damping force increases as the piston speed increases.
[0004]
Due to these characteristics, the conventional vibration control mechanism generates almost no force when stopped and very low speed vibrations, and attenuates vibrations that increase the piston speed at high frequencies due to earthquakes. By generating a force, resonance was prevented and a vibration damping action was exerted on the structure.
[0005]
[Problems to be solved by the invention]
By the way, as described above, in the vibration damping mechanism provided with the damper that generates the damping force with respect to the relative movement of the upper beam and the lower beam, for the input of the dynamic force against the vibration such as an earthquake, Demonstrates resistance, but does not generate force against static forces, so it cannot increase the rigidity of the building itself.
[0006]
For this reason, it is necessary to provide braces (braces) in addition to the vibration damping mechanism to increase the rigidity against static force. However, in ordinary houses, windows and doors are provided on the walls, and the vibration damping mechanism and bracing are provided. Since the wall on which the can be placed is restricted, it is necessary to provide a vibration control mechanism and a brace on the same wall surface in order to optimally place the wall.
[0007]
However, in order to make the vibration control mechanism and bracing coexist in a narrow space such as a wall space, it is necessary to make each member thin, and even in such a case, expensive materials are necessary to ensure strength. In addition, there is a problem that the structure is complicated and the mounting property is sacrificed.
[0008]
In view of the above problems, an object of the present invention is to provide a vibration damping mechanism that exhibits a force with respect to static and dynamic force inputs with a simple structure.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a vibration damping mechanism provided in a structure including an upper beam, a lower beam, and a plurality of columns provided between the upper beam and the lower beam. Connected, the distal end extends toward the other of the upper beam or the lower beam, and transmits the movement in the horizontal direction, one end is connected to the distal end side of the transmitting means, and the other end faces the distal end side of the transmitting means A hydraulic shock absorber connected to a member and applying a damping force to the relative movement between the upper beam and the lower beam; and a front end side of the transmission means and a member facing the front end side of the transmission means A restricting means for restricting relative movement over a predetermined range and an urging means for urging the structure to a normal position are provided in the restricting means .
[0010]
Further, the hydraulic shock absorber is further operable even when the predetermined range of relative movement regulated by the regulating means is moved to the maximum within the predetermined range.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIG.
[0012]
FIG. 1 illustrates one wall surface of a general house. A lower beam 1 made of wood fixed to a base, and pillars 2 and 3 made of a plurality of wood are vertically set on the lower beam 1. . An upper beam 4 made of wood is placed on the columns 2 and 3. This upper beam 4 becomes a lower beam on the second floor in a two-story house.
[0013]
A transmission panel 5 as a transmission means for transmitting the horizontal movement of the lower beam 1 is fixed to the lower beam 1, and the transmission panel 5 includes a metal cross member 6 and vertical members 7 and 8. And in this transmission panel 5, the metal X-shaped bracing 9 which prevents a deformation | transformation of the transmission panel 5 is provided.
[0014]
Between the upper part (front end side) of the transmission panel 5 and the upper beam 4 as a member facing the upper part of the transmission panel 5, a hydraulic shock absorber 10 as a shock absorber is attached by rotatable brackets 11 and 12. Is provided. The hydraulic shock absorber 10 includes a cylinder 14 and a piston rod 15 projecting from the cylinder 14 so as to extend and retract. A piston provided with a damping force mechanism is fixed to one end of the piston rod 15. The piston slides in the cylinder 14 due to expansion and contraction, and at this time, the oil liquid in the cylinder 14 flows through the damping force generation mechanism to generate a damping force.
[0015]
An upper end of the vertical member 8 forms a protruding portion 16 protruding from the transmission panel 5, and a restricting means 17 is provided on the protruding portion 16. The projecting portion 16 is provided with a through hole 18 penetrating in a horizontal direction parallel to the wall surface. One end of the through hole 18 is fixed to the column 3 facing the transmission member, and the other end is provided with a stopper 19. A cylindrical rod 20 made of metal is slidably arranged.
[0016]
On the outer periphery of the rod 20, springs 21 and 22 are provided on both sides across the protruding portion 16. When the building is in a normal position in the vibration state, the rod 20 is always biased toward the center portion. .
[0017]
The movement range L of the protrusion 16 with respect to the rod 20 is such that when the protrusion 15 is moved to the stopper 19 or the column 3 side as much as possible, the hydraulic shock absorber 10 does not reach the maximum stroke and can be further operated. It is set to become.
[0018]
Next, the operation of the above embodiment will be described.
[0019]
When a static force is applied in a direction parallel to the wall surface, the lower beam 1 and the upper beam 4 try to move relative to each other in the horizontal direction. For this movement, the springs 21 and 22 are connected to the transmission panel 5 and the column. Since the force is exerted by suppressing the relative movement of 3, the rigidity of the building can be increased. Further, when a large static force is applied, the springs 21 and 22 expand and contract, and the protruding portion 6 contacts the stopper 19 and the pillar 3. As a result, the transmission panel serves as a bracing, so that sufficient rigidity can be ensured.
[0020]
Further, when a dynamic force such as an earthquake is input, the lower beam 1 follows the movement of the ground, and a relative movement occurs with the upper beam 4. For this movement, since the piston speed of the hydraulic shock absorber is increased, a sufficient damping force acts, so that the building can be prevented from resonating and the building can be prevented from collapsing.
[0021]
Furthermore, for large earthquake-grade inputs, the projecting part 16 abuts against the stopper 19 and the pillar 3 as in the case of static input, so that the transmission panel serves as a brace, thus preventing the building from collapsing. When a further large input occurs, the protruding portion 16 is in a state of being curved, but even in such a case, the hydraulic shock absorber 14 can further stroke, It becomes possible to suppress vibration effectively. In this case, the protrusion 15 is a second spring means having high rigidity.
[0022]
In the above-described embodiment, it is possible to exhibit building rigidity and damping properties even when static, dynamic, and even a large earthquake-grade input, and it is possible to provide a highly vibration-damped structure. .
[0023]
As a modification of the above embodiment, as shown in FIG. 2, stoppers 30 and 31 made of resin such as rubber may be provided instead of the springs 19 and 20.
[0024]
Further, as shown in FIG. 3, in order to prevent the springs 21 and 22 from buckling, large-diameter portions 40 and 41 are provided at both ends of the rod 18, and further, elastic members 42 and 43 made of resin are provided. Thus, the generation of sound when abutting against the large diameter portions 40 and 41 may be prevented.
[0025]
In the above embodiment, an example in which a hydraulic shock absorber as a shock absorber is attached to the upper beam 4 is shown. However, the present invention is not limited to this, and may be connected to a portion on the upper end side of the column 3. In the present invention, one end of the shock absorber is attached to the transmission means, and the other end may be attached to a position as far as possible from the beam to which the transmission member is attached, in other words, on the side farther from the middle of the column. Further, the attachment of the regulating means is the same as that of the shock absorber, and as shown in the embodiment, it may be attached to a member different from the shock absorber or may be attached to the same member. However, it is desirable that the shock absorber and the restricting means are attached as far as possible.
[0026]
Further, in the above embodiment, the example in which the transmission panel 5 is provided on the lower beam 1 is shown. However, the transmission panel 5 may also be received by the upper beam 4, and the transmission panel is provided up and down as in the prior art. Also good. When the transmission panels are provided above and below, it is desirable to provide the regulating means between the upper and lower panels.
[0027]
Further, the position where the restricting means is provided is not limited to the above embodiment, and may be provided where the relative movement between the upper beam 4 and the lower beam 1 is restricted. You may provide in the both sides of the transmission panel 5 by providing a protrusion part.
[0028]
In addition, although the said embodiment demonstrated the wooden conventional construction method as an example, it can be used for a two-by-four or a steel frame structure.
[0029]
【The invention's effect】
In the present invention, in the vibration damping mechanism provided in the structure including the upper beam, the lower beam, and a plurality of columns provided therebetween, the base end is connected to at least one of the upper beam or the lower beam, and the tip is A transmission means that extends toward the other of the upper beam or the lower beam and transmits movement in the horizontal direction, one end is connected to the distal end side of the transmission means, and the other end side is connected to a member facing the distal end side of the transmission means, Relative in a predetermined range or more between a hydraulic shock absorber that applies a damping force with respect to relative movement between the upper beam and the lower beam, and a front end side of the transmission means and a member facing the front end side of the transmission means By providing a restricting means for restricting movement and an urging means for urging the structure to a normal position state of the structure, static and dynamic forces can be generated with a simple configuration in one wall surface. It is possible to provide a vibration control mechanism that exerts a force with respect to the input.
[0030]
Further , the predetermined range of relative movement regulated by the regulating means exceeds the predetermined range by allowing the hydraulic shock absorber to further operate even when the maximum movement is performed within the predetermined range. Since the damping force can be exerted by the hydraulic shock absorber even at a large input that vibrates, a sufficient damping effect can be obtained even in the event of a large earthquake.
[Brief description of the drawings]
FIG. 1 is a view of a wall surface provided with a vibration damping mechanism according to an embodiment of the present invention.
FIG. 2 is a view showing a modification of the restricting means according to the embodiment of the present invention.
FIG. 3 is a view showing another modification of the restricting means according to the embodiment of the present invention.
[Explanation of symbols]
1 Lower beam 2 Column 3 Column 4 Upper beam 4
5 Transmission panel 10 Hydraulic shock absorber 17 Control means

Claims (1)

In a vibration control mechanism provided in a structure including an upper beam, a lower beam, and a plurality of columns provided therebetween, the base end is connected to at least one of the upper beam or the lower beam, and the tip is the other of the upper beam or the lower beam A transmission means for transmitting the movement in the horizontal direction, one end is coupled to the distal end side of the transmission means, the other end is coupled to a member facing the distal end side of the transmission means, and the upper beam and the lower beam, A hydraulic shock absorber that provides a damping force with respect to relative movement between the front end side of the transmission means, and a restriction means that regulates relative movement over a predetermined range between the front end side of the transmission means and a member facing the front end side of the transmission means; Even when the regulating means is provided with a biasing means for biasing the structure to a normal position, and the predetermined range of relative movement regulated by the regulating means is moved to the maximum within the predetermined range. So that the hydraulic shock absorber is further operable. Damping mechanism, characterized in that.

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