JP2001193190A - Dwelling house vibration damping method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method capable of providing a vibration damping function effective to a minute vibration such as traffic vibration. SOLUTION: A dwelling house provides with a vibration damping wall 30 which comprises a main wall 31 fixed to an upper beam 5, a connection part 32 connected to a lower beam 4, a pivot shaft 45 pivotally supporting the main wall 31 on the connection part 32 rotatably each other, and an oil damper 33 connecting the main wall 31 to the connection part 32. The main wall 31 is formed by bridging right and left frames 36 and 37 across the upper and lower frames 34 and 35 and support frames 38 and 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for damping a house as means for attenuating minute vibrations such as traffic vibrations.

[0002]

2. Description of the Related Art In conventional medium- and low-rise houses, consideration is given to ensuring safety against loads such as earthquakes and typhoons, but designs for ensuring comfort against micro-vibrations such as traffic vibrations have been made. Not. For example, as in the technology of Japanese Patent Application Laid-Open No. 8-135250, a damping brace made of low yield point steel is incorporated in a house, and the damping brace absorbs seismic energy to minimize damage to the house. There is something. However, the technique does not include a countermeasure against micro-vibration.

[0003]

As described above, in the conventional house design, no consideration is given to micro vibration such as traffic vibration. Depending on the magnitude of the applied load, such as an earthquake or a typhoon, it has not been taken into account because it can cause a fatal impact on the frame structure and does not affect the lives of residents. However, traffic vibrations caused by the operation of transportation facilities give occupants an unpleasant feeling every hour every day. Vibration is particularly noticeable when the occupant is at rest, or is awake when sleeping, and traffic vibrations impair comfort in living.
These adverse effects are particularly remarkable when a house is located near a vibration source such as a highway.

The following two methods are conceivable as methods for preventing the deterioration of the habitability of a house due to the traffic vibration. One is to improve the damping rate for the vibration of the entire house and not to amplify the vibration that propagates from the ground to the inside of the house.
The second is to increase the rigidity of the entire house and minimize the effects of vibration. If the rigidity is low, the vibration propagating from the ground causes a rotating motion between the constituent members of the house, and a large shaking occurs. This large shaking is slow, and is more physiologically sensible than fast vibration.

[0005] In the present invention, it is necessary to solve the problem of suppressing the fine vibration such as traffic vibration below the bodily sensation vibration threshold by improving the damping rate for the vibration of the whole house mainly according to the first method described above. It is an issue. That is, it is an object of the present invention to provide a method of exhibiting an effective vibration damping effect on minute vibrations such as traffic vibrations.

[0006]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. That is, in claim 1,
A main wall disposed between the beams of the house and fixed to the upper beam, a connecting portion connected to the lower beam, a fulcrum shaft for rotatably mounting the main wall and the connecting portion, and the main wall; And a vibration damping wall composed of a vibration damping device connecting the connecting portion.

According to a second aspect of the present invention, the connecting portion comprises a base fixed to the beam, and a plate inserted into the base.
The plate portion constitutes a damping wall so that the position of the fulcrum shaft and the connection position of the damping device do not overlap in the vertical direction.

According to a third aspect of the present invention, the main wall includes at least two or more horizontal frames and a vertical frame that bridges all of the horizontal frames, and is provided with a vibration damping device therein, and the vibration damping device is an oil damper. A damping wall using is constructed.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overhead view of a three-story house, FIG. 2 is a front view of a damping wall, FIG. 3 is a side view of the damping wall,
4 is a conceptual diagram showing the principle of the damping wall, FIG. 5 is a conceptual diagram showing the principle of the damping wall, FIG. 6 is a front view showing a lower portion of the damping wall, and FIG. 7 is a base. FIG. 8 is a side view showing the lower part of the damping wall, FIG. 9 is a side sectional view taken along AA, FIG. 10 is a front view showing an oil damper, and FIG. FIG. 12 is a side cross-sectional view taken along a line B, and FIG. 12 is a front view showing the state of rotation of a lever.

First, the structure of the skeleton of a house will be described.
As shown in FIG. 1, a frame 1 of a three-story house is composed of columns 3 and beams 4, 5, 6.
It is erected on the top. The frame 1 has a beam winning ramen structure. The beams 4, 5, and 6 are through beams, and the columns 3 are columns that are divided for each floor. In this beam-winning ramen-structured house, the location of the pillars 3 can be determined within a range that maintains the strength and rigidity of the frame structure, and unlike the pillar-winning house, an internal structure with a high degree of freedom can be realized. .

The pillars 3, 3,... Are erected on the foundation 2, and the beams 4 are fixed on the pillars 3, 3,. Similarly, pillars 3 are also erected on the beam 4,
Above it, a beam 5 is fixed, and similarly, the beam 6 constitutes the hut surface on the third floor. In addition, horizontal braces are provided on the beam surfaces formed by the beams 4, 5, and 6, respectively, so that the rigidity between the beams is increased, and a skeleton having strength and flexibility is formed. And a bundle, diagonal,
Alternatively, a truss frame or the like may be provided to form a roof.

Next, a description will be given of a damping wall provided in a house. As described above, the higher the rigidity of the entire house, the smaller the influence of vibration such as traffic vibration propagating through the ground. If the rigidity is high, the integrity as a house is maintained,
This is because when the rigidity is low, rotational movements are generated between the house components. In other words, the displacement in the horizontal direction of the beams, columns, damping walls, etc., which are the individual constituent members of the housing skeleton when the vibration occurs, increases as the rigidity of the housing decreases. Therefore, first, the effect of external vibrations is minimized by increasing the rigidity of the entire house. However, a member having high rigidity has a small vibration absorbing effect. The external vibration once received cannot be absorbed by the member itself, and the vibration will continue forever. Therefore, when the external vibration is continuously applied, the vibration is superimposed one after another without being attenuated, and resonance occurs, and the vibration becomes large enough for a person to feel the vibration. Therefore, in the present invention, instead of relying on a vibration suppression measure by improving rigidity, the vibration damping rate is improved by disposing a vibration damping wall provided with a vibration damping mechanism, and an adverse effect due to traffic vibration is eliminated. The anti-vibration frame 10 as a vibration damping wall of the present invention is disposed between the foundation 2 and the beam 4 or between the beams 4.5 and 5 and between the beams 5 and 6 in FIG.

The house in which the vibration damping wall is provided to obtain the vibration damping effect is not limited to the house having a beam-winning ramen structure shown in FIG. It can also be realized in a house with a pillar-winning ramen structure or a house with a beam-winning brace structure.

Now, the vibration damping wall 30 of the present invention will be described. The damping wall 30 is configured as shown in FIGS. 2 and 3 and is disposed on the frame 1. The damping wall 30 is shown in FIG.
As shown in (1), a main wall 31, which is arranged between beams and is fixed to an upper beam and is composed of a frame or the like, a connecting portion 32 connected to a lower beam, and an oil damper 33. In the drawing, the damping wall 30 is provided so as to bridge between the beams 4 and 5, and is fixed to the beams by bolts and nuts.

The principle of damping of the damping wall 30 will be described with reference to FIGS. FIG. 4A is a conceptual diagram illustrating a state in which the damping wall 30 is provided between the beams 4 and 5. FIG.
(B) shows how the main wall 31, the connecting portion 32, and the fulcrum shaft 45 described later are disposed, except for the oil damper 33. As will be described in detail later, the damping wall 30 has a structure in which the main wall 31 and the connecting portion 32 are rotatably connected to each other via a fulcrum shaft 45, and the state is simplified in FIG. Is shown. FIG. 4B does not show the oil damper 33 for the sake of simplicity. In addition, vibrations caused by earthquakes and transportation are represented using displacement amounts d1 and d2. The displacement d1 is the distance that the beam 4 has moved due to vibration, and the displacement d2 is the distance that the beam 5 has moved in the same manner. Since these displacement amounts are displacement amounts due to vibration, the directions are reversible, but for ease of explanation, the displacement amounts in one direction are considered in consideration of vibration at a certain point in time. The following description is the same even if the direction of the displacement amount is reversed, so there is no problem. Next, FIG. 4C will be described. FIG. 4B shows the state of the damping wall 30 and the beams 4 and 5 as viewed from a point where no earthquake or traffic vibration is being received by the frame 1. In FIG. 4C, consider from the viewpoint viewed from above the beam 5 and the main wall 31 fixed to the beam 5. At this time, the main wall 31 appears to be in a stopped state, and the beam 4 and the connecting portion 32 fixed to the beam 4
It can be seen that they are moving relative to 1. The displacement d3 as the relative motion is given by the vector synthesis of the displacements d1 and d2. Therefore, at this time, the connecting portion 32 has moved by the displacement d3 with respect to the main wall 31. In addition, how the oil damper 33 connects the connecting portion 32 and the main wall 31 is conceptually shown in the drawing.

As shown in FIG. 5D, the connecting portion 32 is rotatably supported by the main wall 31. For this reason, when the displacement of the displacement amount d3 occurs at the lower end of the connection portion 32, the reverse displacement amount d4 occurs at the upper end of the connection portion 32. The magnitude of the displacement d4 is determined by the distance ratio between the upper and lower ends of the connecting portion 32 and the fulcrum shaft 45. The distance ratio is distance r2 / distance r1, and a value obtained by multiplying the distance ratio by the displacement amount d3 is given as the displacement amount d4. The distance r1 is a distance from the fulcrum shaft 45 to the lower end of the connection portion 32, and the distance r2 is a distance from the fulcrum shaft 45 to the upper end of the connection portion 32. Then FIG.
(E) will be described. As will be described later, the oil damper includes a cylinder and a piston, and applies a resistance force according to a displacement amount caused by contraction of the piston. In FIG. 5E, the displacement amount d4 of the connecting portion 32 added in FIG. 5D is applied to the oil damper 3 via the piston.
3 shows a state in which a resistance force F is transmitted to the connection portion 32 and transmitted to the connection portion 32. The connecting portion 32 is pushed back by the resistance F, and the lower end of the connecting portion 32 has the resistance F ×
A resistance force f acting in the opposite direction given by (r2 / r1) acts. At this time, the displacement d5 is equal to the displacement d3.
It will be smaller. That is, the vibration is attenuated.

Next, the configuration of the damping wall 30 will be described in detail. First, the main wall 31 will be described. As shown in FIGS. 2 and 3, an upper frame 34 and a lower frame 35 are disposed above and below the main wall 31, and a left frame 36 and a right frame 37 bridge between the upper frame 34 and the lower frame 35. I have. A support frame 38 and a support frame 39 bridge the left and right frames 36 and 37 in the left and right direction. Further, as shown in FIGS. 6 to 9, plates 40, 40 are fixed on the lower frame 35, and are disposed so as to bridge between the left and right frames 36, 37. The surrounding members 41 and 42 and the plate 43 are disposed downward from the lower frame 35, and are fixed to each other in this order. The plate 43 has a mounting hole formed in the front-rear direction, and a bearing 44 is inserted and fixed in the mounting hole.

The bearings 44 support a fulcrum shaft 45, and both ends of the fulcrum shaft 45 are fixed by nuts 46 so that they cannot slide in the front-rear direction. As shown in FIG. 9, a long hole 61 is formed from one end of the fulcrum shaft 45 toward the center, and the long hole 61 is sealed by a crown member 62. At the center of the fulcrum shaft 45, a thin tube 63 is bored from the elongated hole 61 toward the outer periphery, and the thin tube 63 penetrates the fulcrum shaft 45 and is provided inside a lever plate 47 described later. It has reached 48. The inside of the elongated hole 61 is filled with machine oil, and the machine oil is supplied to the bearing 48 through the thin tube 63 to maintain smooth rotation of the lever plate 47 around the fulcrum shaft 45 as described later. .

Next, the connection section 32 will be described. FIG.
As shown in FIGS. 6 to 9, the fulcrum shaft 45 is
The lever plate 47 is supported by the fulcrum shaft 4.
5 is made rotatable about a rotation axis. Lever plate 4
The rotation range of 7 is limited by the width in the left-right direction of the space vertically passing through the surrounding members 41 and 42 and the lower plate 35. The lever plate 47 is at the bottom,
It is fixed to a support member 49 having a U-shape in a front view using bolts 50 and 51. The support guide 49 has a bolt 52 screwed from below. One end of the bolt 52 is formed as a threaded portion 52a, and the other end is formed as a shaft portion 52b. The shaft 52b of the bolt 52 is connected to the base 5 provided on the beam 4.
4 is supported.

As shown in FIG. 7, the base 54 is
4a and 54b are fixed to each other by screwing bolts 64 in the front-rear direction. The fixing of the base 54 to the beam 4 is performed by bolts 65. The shaft portion 52b of the bolt 52 is inserted into the elongated hole 66, and the shaft portion 52b is supported by the bearing 55.

In other words, the connecting portion 32 has a lever plate 47, which is a main component, supported by the main wall 31 via the support shaft 45, and a shaft portion 52b of a bolt 52 screwed below the connecting portion 32. 54 and connected to the beam 4. Hereinafter, the connection part 32 except the base part 54 is set as a plate part. The main beam 31 has a maximum width in the left-right direction of the main wall 31 when viewed from the front,
In contrast, the plate portion is connected only to the beam 54 and the base portion 54 to be fixed via the bolt 52, that is, by one-point support. That is, since the plate portion is connected to the beam 4 by one-point support, compared to the main wall 31 fixed to the beam 5, the plate portion rotates around the fulcrum axis 45 for horizontal sliding of the beam 4. It is easy to rotate.

As shown in FIGS. 10 and 11, the support frame 39 of the main wall 31 pivotally supports the pins 56. The pins 56 pinch the upper part of the lever plate 47 from the front-rear direction to prevent the lever plate 47 from swinging in the front-rear direction. The pin 56 and the lever plate 47 are in smooth contact with each other, and the rotation of the lever plate 47 in the left-right direction is not suppressed.

The oil damper 33 will be described. As shown in FIG. 10, the oil damper 33 is composed of a cylinder, a piston sliding in the cylinder, and a piston rod 58 connected to the piston, and an oil for generating a predetermined viscous resistance in the cylinder. Is filled. The oil damper 33 has a rod 57 extending leftward and connected to the lever plate 47.

The piston is provided with a valve for generating a viscous resistance when sliding inside the cylinder, and the valve is opened only when the piston slides in one direction. The damping force is generated by viscous resistance of the oil filled in the cylinder. Furthermore, since the piston reciprocates, the valves are provided with forward and reverse valves, respectively. With the above configuration, the oil damper 33
Provides the above-described resistance force F by viscous resistance to the sliding of the cylinder, thereby realizing damping of external vibration.

The oil reservoir 5 is located below the oil damper 33.
9 and an oil flow rate adjusting screw 59 is provided on the right side. By operating the oil sump 59 and the oil flow rate adjusting screw 60, the magnitude of the resistance F generated by the oil damper 33 and the reaction speed can be appropriately adjusted.

When the frame 1 vibrates, the connecting portion 32 rotates around the fulcrum shaft 45 to slide the piston rod 58 as shown in FIG.

[0027]

According to the present invention, a main wall disposed between beams of a house and fixed to an upper beam, a connecting portion connected to a lower beam, and a relative rotation of the main wall and the connecting portion are provided. Uses a fulcrum shaft that can be pivotally mounted, and a vibration damping wall composed of a vibration damping device that connects the main wall and the connection part, so that micro vibrations such as traffic vibrations can be expanded using the principle of leverage. Can be taken out. Therefore, it is possible to effectively operate the vibration damping device that performs vibration damping according to the displacement amount of the disposition position of the frame disposing member, and it is possible to obtain an effective vibration damping effect.

According to a second aspect of the present invention, the connecting portion comprises a base fixed to the beam, and a plate inserted into the base.
Since the plate portion constitutes a vibration-damping wall such that the axially attached position of the fulcrum shaft and the connection position of the vibration-damping device do not overlap in the vertical direction, the following effects are obtained. Since the main wall is fixed to the beam at the maximum width of the damping wall, the main wall is firmly fixed to the beam in comparison with the connection portion, and functions as a stable support member that supports the fulcrum shaft. On the other hand, since the plate portion is connected to the beam only by inserting the bolt with the shaft portion, the plate portion can rotate with respect to the beam within the elastic range of the constituent member. Therefore, the rotational movement of the plate portion with respect to the fulcrum shaft can be maximized. Therefore, the vibration of the skeleton is transmitted to the connection portion at the maximum, so that the maximum vibration damping effect is obtained. Also, the relative vibration of the upper and lower beams on which the damping wall is provided is transmitted to the lower end of the plate portion, and the displacement of the relative vibration is amplified and transmitted to the upper end of the plate portion by the principle of leverage. The vibration is also taken out as a large displacement.
Therefore, the vibration damping device reacts sensitively, and an effective vibration damping effect can be obtained.

According to a third aspect of the present invention, the main wall is composed of at least two or more horizontal frames and a vertical frame that bridges all of the horizontal frames. Since the damping wall using the damper is configured, the following effects are obtained. First, since the main wall is composed of a frame, it can be constructed inexpensively, leading to a reduction in house construction costs. Next, since an oil damper is used as the vibration damping device, the vibration damping action of the device can be easily adjusted, and appropriate adjustment can be made according to the nature of the vibration applied to the house. In particular, it is possible to flexibly cope with vibration that greatly changes due to changes in the environment around the house, such as traffic vibration, and a wide range of vibration suppression measures can be realized.

[Brief description of the drawings]

FIG. 1 is an overhead view of a three-story house.

FIG. 2 is a front view of a damping wall.

FIG. 3 is a side view of the damping wall.

FIG. 4 is a conceptual diagram showing the principle of a damping wall.

FIG. 5 is a conceptual diagram showing the principle of a vibration damping wall.

FIG. 6 is a front view showing a lower portion of the vibration damping wall.

FIG. 7 is a plan view showing a base.

FIG. 8 is a side view showing a lower portion of the vibration damping wall.

FIG. 9 is a side sectional view taken along AA.

FIG. 10 is a front view showing an oil damper.

FIG. 11 is a side sectional view taken along the line BB.

FIG. 12 is a front view showing a state of rotation of a lever portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Foundation 3 Column 4.5.6 Beam 30 Damping wall 31 Main wall 32 Connection part 33 Oil damper 45 Support shaft 34.35 Upper and lower frame 36.37 Left and right frame 38.39 Support frame

Claims (3)

[Claims] 1. A main wall disposed between beams of a house and fixed to an upper beam, a connecting portion connected to a lower beam, and a fulcrum shaft for rotatably mounting the main wall and the connecting portion relative to each other. And a damping wall comprising a damping device connecting the main wall and the connection portion. 2. A connecting portion of the vibration damping wall includes a base portion fixed to the beam, and a plate portion inserted into the base portion, and the plate portion is connected to a fulcrum shaft and connected to the vibration damping device. 2. The method according to claim 1, wherein the vertical direction does not overlap. 3. The main wall is composed of at least two or more horizontal frames and a vertical frame that bridges all of the horizontal frames. The main wall is provided with a vibration damping device, and an oil damper is used as the vibration damping device. 3. The method of damping a house according to claim 1, wherein