JPH11270181A - Damping wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb large energy at low cost by providing a laminated rubber with built-in lead plug as a damper between respective end sides of a pair of supporting plates arranged so as to fit the respective end sides to a pair of beams moved by receiving earthquake motion or a wind load. SOLUTION: Upper and lower beams are moved by earthquake or wind, and upper and lower side supporting plates 8, 7 are also moved up and down, right and left. Relative displacement is generated also in a laminated rubber 6 with built-in lead plug by their relative movement. Shearing deformation is generated in the lead plug to absorb energy. In this case, because rigidity of the lead plug is large, it acts as a spring of large rigidity against a load under a fixed capacity, and it restrains vibration of a building or a house. Meanwhile, against a load over a fixed capacity, it absorbs large energy. Accordingly, it controls any vibration up and down, right and left, it functions as a rigid spring against a relatively small load, and functions as a large energy absorbing device against a big earthquake. Hereby the lead is repeatedly used, the construction is simple, and the cost can be made lower.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wall used in a building or a house, and more particularly to a damping wall having a built-in damping device.

[0002]

2. Description of the Related Art FIG. 7 is a front view schematically showing an example of a conventional vibration damping wall in which a vibration damping device is incorporated inside a wall, and FIG. 8 is a sectional view taken along line AA of FIG. In FIG. 7, the damping wall 51 uses a viscous fluid 52. The viscous fluid 52 is filled in a container 53 and is placed on the lower beam 54 together with the container 53.
In this viscous fluid 52, the lower end side of a middle plate 56 suspended from the upper beam 55 is submerged.

In the case of an earthquake or the like, the upper beam 5
The middle plate 56 vibrates in the viscous fluid 52 because the 5 and the lower beam 54 relatively vibrate. At this time, the resistance force of the viscous fluid 52 acts on the middle plate 56, thereby damping the vibration of the upper beam 55 and the lower beam 54. In addition, in this damping wall 51,
In terms of structure, it has an effect on vibrations in two directions, horizontal and vertical. However, the viscous fluid 52 has temperature dependence such that the viscosity is high when the temperature is low and low when the temperature is high. Therefore, the vibration damping effect also has a temperature dependency.

FIG. 9 is a front view schematically showing another example of a conventional damping wall in which a damping device is incorporated. The control wall 61 has a frictional force variable by a control device. A support member 63 is attached to the upper beam 62, and a support frame 65 is attached to the lower beam 64. The support member 63 and the support frame 65 are rotatably connected to a lever 67 via a pivot pin 66, respectively. The lower end of the lever 67 is connected to a pivot pin 68.
Is connected to one end side of the friction plate 69 via the. The other end of the friction plate 69 is inserted into the variable friction device 70, and the frictional force is variably adjusted by the operation of the control device 71.

In this damping wall 61, upper and lower beams 62, 64
Are relatively vibrated by the lever 67, the relative displacement is magnified several times and transmitted to the friction plate 69 below. The friction plate 69 is inserted into a variable friction device 70 whose friction force is controlled by a control device 71, and the friction force is variably adjusted according to the vibration of the upper and lower beams 62 and 63. Controls the relative vibration of the upper and lower beams 62 and 63. However, the damping wall 61 is structurally effective only for horizontal vibration, and has no effect on vertical vibration. In addition, the control device 71 is required, and electric power is also required for the control device 71. Furthermore, the structure is complicated, the cost is high, and maintenance is required.

[0006]

As described above, FIG.
In addition, the structure of the conventional damping wall 51 shown in FIG. 8 has a problem that there is a temperature dependency and the damping effect is not stable. On the other hand, in the structure of the conventional damping wall 61 shown in FIG.
It is effective only for horizontal vibration and has no effect on vertical vibration. It also requires a controller and power for this controller. Further, there are problems in that the structure is complicated, the cost is high, and maintenance is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to be able to suppress vibrations in both horizontal and vertical directions, to absorb large energy, and An object of the present invention is to provide an inexpensive damping wall. Further, other objects will be clarified sequentially in the contents described below.

[0008]

Means for Solving the Problems The present invention is characterized by taking the following technical means in order to achieve the above object.
That is, a pair of beams that are relatively moved by receiving a seismic motion or a wind load, are provided with a pair of support plates that are arranged with one end attached to each of the beams, and the other end of the pair of support plates is provided. A laminated rubber containing a lead plug was provided as a damper between them.

According to this structure, when the space between the pair of support plates moves up and down or left and right relatively due to seismic motion and wind load, relative displacement also occurs in the laminated rubber containing lead plugs. . When the lead plug-containing laminated rubber undergoes relative displacement, the rigidity of the lead plug is very large, so that it acts as a very large spring for a load less than the capacity and suppresses vibration. On the other hand, a load exceeding the capacity acts like a wear damper, absorbs a very large amount of energy, and suppresses vibration. Therefore, it effectively acts on not only horizontal vibration but also vertical vibration.

[0010]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, although the form described below is a preferable specific example of the present invention, various technically preferable limitations are added thereto. However, the scope of the present invention is not limited to the following description, which particularly limits the present invention. It is not limited to these forms unless otherwise stated.

FIG. 3 shows an example of a building / house. The present invention is applied to a wall 2 of the building / house 1 (hereinafter referred to as a "damping wall 2"). When the building / house 1 vibrates due to a typhoon or an earthquake, the wall 2 is deformed, but the deformation is used to absorb energy by an energy absorbing material, and the building / house 1 A wall that has the function of damping vibration.

FIG. 4 is a conceptual diagram of the vibration damping wall 2 shown as an embodiment of the present invention, and here, it is assumed that it corresponds to the portion indicated by reference numeral B in FIG. In FIG. 4, beams 3 pass through the wall 2 of the building / house 1, and support beams 5 formed in a trapezoid shape protrude from the upper and lower beams 3 so as to face each other. A damping element 4 is attached between the upper and lower beams 3 and the two supporting beams 5 protruding from the upper and lower beams 3, and the damping element 4 connects the two supporting beams 5 to each other.

FIGS. 1 and 2 show in detail a peripheral portion where the vibration damping element 4 is mounted. FIG. 1 is a front view thereof, and FIG. 2 is a side view thereof. Next, the structure of the vibration damping element 4 will be described with reference to FIGS. 1 and 2. The vibration damping element 4 includes a plurality of (six in this example) lead plug-containing laminated rubber 6 and a lower support plate 7.
, An upper support plate 8, a fastening bolt 9, and the like.

More specifically, the laminated rubber 6 containing the lead plug is generally known in its structure itself.
As shown in the enlarged cross-section, a plurality of (six in this example) ring-shaped iron plates 11 are inserted into the rubber 10, and a lead plug 12 is inserted through the center of the iron plate 11. Inserted. Further, ends of the lead plug 12 are projected from both sides of the rubber 10, and mounting plates 13 are respectively attached to the protruded ends, and the mounting plate 13 has a structure in which both ends of the rubber 10 are sandwiched. Has become. Here, the lead plug 12 and the mounting plate 13 are free from each other and are not fixed.

The lower support plate 7 is made of metal and has an upper portion 7A divided into two plate-like members 7a, 7a having a substantially U-shaped cross section (see FIG. 2). The two plate-like members 7a and 7b are formed with five mounting holes (not shown) to which the fastening bolts 9 are mounted, facing each other. On the other hand, nine mounting holes (not shown) for mounting the mounting bolts 15 are formed in the lower portion 7B of the lower support plate 7.
In addition, the number of each of the mounting holes described above is arbitrarily changed depending on the usage mode.

The upper support plate 8 is made of metal and formed in a single plate. Nine mounting holes (not shown) for mounting the mounting bolts 15 are formed in the upper portion 8A of the upper support plate 8, and a mounting bolt 9 for the lower support plate 7 is mounted in an intermediate portion. Five through holes 16 are formed corresponding to the holes. The inner diameter of the through hole 16 is slightly larger than the outer diameter of the fastening bolt 9. Also, the number of mounting holes in the upper support plate 8 can be arbitrarily changed depending on the usage.

The vibration damping element 4 allows the lower portion of the upper support plate 8 to be inserted between the two plate members 7a of the lower support plate 7 and the upper support plate 8 to be connected to the plate member 7a. Laminated rubber 6 containing lead plugs is placed horizontally, that is, in parallel with upper and lower beams 3 with the mounting plate 13 being in close contact with the upper support plate 8 and the plate member 7a so as to fill the gap. doing. In this state, the fastening bolt 9 is passed through the mounting holes, the through holes 16 and the mounting holes from the outside of the plate members 7a and 7b in this order, and is fixed by the nut 17 (see FIG. 2). The tightening by the bolts and nuts adjusts the tightening force of the damping element 4 interposed between the plate member 7a and the upper support member 8. In this tightening,
Since the tightening bolt 9 is inserted into the through hole 16 of the upper support plate 8 having an inner diameter larger than the outer diameter of the tightening bolt 9, there is no interference with the upper support plate 8.

The vibration damping element 4 has a mounting hole (not shown) provided in the support beam 5 projecting from the lower beam 3 and a mounting hole of the lower support plate 7. The mounting bolts 15 that are commonly inserted into the mounting holes fix the space between the lower support plate 7 and the support beam 5 projecting from the lower beam 3. Also, the mounting holes of the upper support plate 8 are made to correspond to the mounting holes (not shown) provided in the support beam 5 protruding from the upper beam 3, and then the upper support plate 8 and the upper The space between the supporting beam 5 and the supporting beam 5 projecting from the beam 3 is fixed. Thereby, the damping element 4
Are mounted between the upper and lower support beams 5.

Next, the damping wall 2 constructed as described above is used.
Will be described. When the building / house 1 shown in FIG. 3 receives an earthquake motion or a wind load, the upper and lower beams 3 in FIG. 4 move relatively left and right or move vertically. Since the relative movement amount is transmitted to the support beam 5 as it is,
The lower support plate 7 and the upper support plate 8 shown in FIG. 1 and FIG. 2 also move relatively vertically and horizontally. Due to these relative movements, relative displacement also occurs in the laminated rubber 6 containing lead plugs. Thereby, shear deformation occurs in the lead plug 12 at the center of the laminated rubber 6 containing the lead plug, and energy absorption as shown in FIGS. 5 and 6 occurs, and as a result, vibration of the building / house 1 is suppressed, and Shaken.

FIG. 5 shows a state in which the upper beam 3 moves with respect to the lower beam 3 when subjected to vibration in the left-right direction (horizontal direction), and FIG. I have.
FIG. 6 shows the energy absorption characteristics of the damping wall 2 at that time, in which the vertical axis shows the load (W) and the horizontal axis shows the displacement (σ). When the vibration damping wall 2 receives vibration in the left-right direction, the first rigidity 21 of the lead plug 12 in the laminated rubber 6 containing the lead plug is very large. It acts as a large spring and suppresses vibration of the building / house 1. On the other hand, a load 23 exceeding the capacity 22 acts like a wear damper, absorbs very large energy, and suppresses vibration. In FIG. 5, reference numeral 24 denotes an energy absorption amount. Although the above description is for the case of receiving vibration in the left-right direction, energy absorption is performed in the same manner when receiving vibration in the up-down direction (vertical direction).
In addition, this vibration damping effect is obtained by tightening the space between the plate-like members 7a of the lower support plate 7 with the tightening bolts 9 according to the weight of the building or the house to be damped, to the laminated rubber 6 containing lead plugs. Appropriate settings can be made by selecting the compression load to be applied and by selecting the capacity 22 and the number of the laminated rubber 6 containing lead plugs.

Therefore, the structure of this embodiment has the following effects. It can effectively act not only on horizontal vibrations but also on vertical vibrations, and can control both vertical and horizontal vibrations. It works effectively not only for wind loads but also for random loads such as seismic loads. It has the effect of a rigid spring against relatively small loads such as micro-earthquake motions and wind loads, and functions as a large energy absorbing device for large earthquakes to suppress vibration. Low temperature dependence. Lead is recrystallized quickly and has no fatigue, so it can be used repeatedly. Therefore, it is almost maintenance-free. Simple structure and low cost. In addition, there are few failure parts and the reliability is high. As described above, the construction cost of the building / house 1 is rationalized, or the reliability / habitability is improved.

In the structure of the above embodiment, the damping wall 2
Has been described as being placed upright.
The orientation may not be vertical, but may be used horizontally, for example, as a floor or ceiling.

[0023]

As described above, according to the present invention,
It is possible to suppress vibrations in any of horizontal and vertical directions, and also to suppress vibrations with large energy, and it can be expected to achieve effects such as realization at low cost.

[Brief description of the drawings]

FIG. 1 is a front view of a structure around a damping element in a damping wall of the present invention.

FIG. 2 is a front view of a structure around a damping element in the damping wall of the present invention.

FIG. 3 is a diagram showing an example of a building / house.

FIG. 4 is a conceptual diagram of a damping wall according to the present invention.

FIG. 5 is a diagram for explaining the vibration damping principle of the present invention.

FIG. 6 is a diagram showing an example of the energy absorption characteristics of the present invention.

FIG. 7 is a conceptual diagram showing an example of a conventional damping wall.

FIG. 8 is a sectional view taken along line AA of FIG. 7;

FIG. 9 is a conceptual diagram showing another example of a conventional damping wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building / house 2 Wall (damping wall) 3 Beam 4 Damping element 5 Supporting beam 6 Laminated rubber with lead plug 10 Rubber 12 Lead plug

Claims (1)

[Claims] 1. A pair of support plates which are divided into a pair of beams which move relatively in response to a seismic motion or a wind load, and which are arranged with one end attached to each of said beams. A damping wall comprising a laminated rubber containing a lead plug provided as a damper between the damping wall and the other end.