JP5541729B2 - Vibration control device and vibration control structure of wooden building using the same - Google Patents

Description

  The present invention relates to a vibration damping device mainly applied to a wooden house, particularly a wooden house of a conventional frame construction method, and a vibration damping structure of a wooden building using the vibration damping apparatus.

  Structural vibration control technology began with the introduction of large-scale buildings for offices, etc., and recently combined with the need to improve residential comfort and earthquake safety, it has become a detached wooden house. Has also been introduced.

  The main damping technology used in detached wooden houses is to place a damper in the building that absorbs and attenuates vibration energy, thereby converging the shaking of the building due to seismic motion. There are various types such as elastic-plastic dampers using yield point steel, viscous dampers using silicon, oil dampers, friction dampers, etc., and they are properly used according to the seismic motion, building scale, or vibration characteristics.

  Regardless of which damper is used, in order to converge the shaking of the building due to the earthquake motion, it is necessary to bridge the damper between the members that have caused the relative displacement due to the shaking of the building. The larger it is, the easier it is to control the shaking of the entire building.

  Therefore, a typical example is a configuration in which the damper is installed such that an interlayer displacement, that is, a relative displacement generated between the upper and lower horizontal members is input.

JP 2010-203164 A JP 2009-024435 A JP 2008-308906 A JP 2005-171515 A JP 2004-263419 A

  However, when installing a damper between upper and lower horizontal members, the space surrounded by the rectangular frame consisting of pillar beams is inevitably occupied by the damper and the brace or connecting plate that connects the damper to the rectangular frame. If there is no problem if it can be closed as a wall, there will be no problem. However, if you want to secure a large indoor space or secure ventilation and lighting, the damper installation location will be a wall. It is difficult to stand up, and to provide an opening for securing a large space, ventilation or lighting.

  Of course, if the horizontal member for mounting the damper is separately bridged inside the rectangular frame made of column beams, and the damper is installed in the upper space and hidden by the ceiling, the remaining space can be used as an opening. The relative displacement input to the damper is reduced by the ratio of the ceiling height to the floor height, and the vibration control effect is greatly reduced.

  In addition, an installation form is known in which a damper is installed at the joint of the column beam so that the relative rotation angle of the column beam is input. According to such an installation form, the four corners of the wall space are occupied. Therefore, an opening can be secured at the center of the rectangular frame, and the dampers installed at the four corners can be concealed by the ceiling or floorboard, so that the aesthetics of the living room can be maintained.

  However, when taking out the shaking of the building due to seismic motion in the form of the relative rotation angle of the column beam, there is a limit in the size of the small corner space near the joint, and it is still difficult to expect a large damping effect. Such a situation also becomes a problem when a vibration control device is installed in the under-floor space of a wooden house constructed by a so-called traditional construction method.

  The present invention has been made in consideration of the above-described circumstances, and even if the shaking of the building due to earthquake motion is extracted in the form of the relative rotation angle between the column and the horizontal member, the shaking of the building is converged in a short time. And a damping structure for a wooden building using the damping device in which the inner space of the rectangular frame surrounded by the pillar and the horizontal member is not occupied by the damper and its related members. The purpose is to provide.

In order to achieve the above object, a vibration control structure for a wooden building according to the present invention includes a pair of columns arranged opposite to each other, an upper horizontal member spanned on the top thereof, and those as described in claim 1. The inner space of the rectangular frame using the lower horizontal member connecting the legs of the wooden frame member, so that at least one of the space directly below the upper horizontal member and directly above the lower horizontal member is the installation area. And in the damping structure of the wooden building in which the damping device is installed so that the area excluding the installation area becomes a rectangular opening,
The vibration damping device includes an oil damper having a lower surface of the upper horizontal member or an upper surface of the lower horizontal member as an attachment surface, and one of a cylinder and a piston rod pin-connected to the attachment surface, and one end of the attachment. One of the swing lever, which is pin-bonded to the surface and the other end is pin-bonded to the other of the cylinder and the piston rod, and one end of which is joined to the middle position of the swing lever and the other end is the pair of columns. The structure is composed of an arm pin-joined on one side, and the relative of the columns generated at the installation height of the oil damper with the relative rotation of the column and the upper horizontal member or the lower horizontal member during an earthquake. setting the horizontal displacement, so as to be inputted to the oil damper in the expanded state, the pin junction position between the arm and the pin junction position and the arm and the pillar of the swing lever One in which the.

  In the vibration control structure for a wooden building according to the present invention, the installation area is directly below the upper horizontal member and directly above the ceiling installed below the upper horizontal member. An opening sandwiched between floor boards provided below is defined as the rectangular opening, and the rectangular opening is configured to be able to go back and forth between adjacent living rooms.

  Further, in the vibration control structure of a wooden building according to the present invention, the installation area is directly below the upper horizontal member and directly above the lower horizontal member, and an opening sandwiched between them is the rectangular opening. A waist window is fitted into the rectangular opening.

  Further, in the vibration control structure for a wooden building according to the present invention, the installation area is directly above the lower horizontal member, and an opening extending directly below the upper horizontal member is the rectangular opening. A high window is inserted into the opening of the.

Further, as described in claim 5, the vibration damping structure for a wooden building according to the present invention connects a pair of columns arranged opposite to each other, an upper horizontal member spanned between the tops thereof, and leg portions thereof. It is an inner space of a rectangular frame that uses a lower horizontal member and an auxiliary horizontal member spanned between the pair of pillars as a wooden frame member, and is at least either directly below or directly above the auxiliary horizontal member In the damping structure of a wooden building in which the damping device is installed so that the area other than the installation area is a rectangular opening,
The damping device includes an oil damper in which either the cylinder or the piston rod is pin-joined to the mounting surface with the upper or lower surface of the auxiliary horizontal member as the mounting surface, and one end is pin-joined to the mounting surface. A swing lever whose end is pin-joined to the other of the cylinder and the piston rod, one end is joined to an intermediate position of the swing lever, and the other end is pin-joined to one of the pair of pillars together constitute at the arm, the oil damper in a state where the relative horizontal displacement of said post and said post caused by installation height of the oil damper in accordance with the relative rotation between the auxiliary horizontal members have been expanded at the time of an earthquake The pin joint position between the arm and the rocking lever and the pin joint position between the arm and the column are set so as to be input to .

  Further, the vibration control structure for a wooden building according to the present invention includes the auxiliary when the upper surface of the auxiliary horizontal member is the mounting surface or the lower surface of the auxiliary horizontal member is the mounting surface. An opening extending above the horizontal member is defined as the rectangular opening, and a high window is fitted into the rectangular opening.

  Further, the vibration control structure for a wooden building according to the present invention is a case where the lower surface of the auxiliary horizontal member or the lower surface of the auxiliary horizontal member is the mounting surface when the upper surface of the auxiliary horizontal member is the mounting surface. The opening extending below the installation area is defined as the rectangular opening, and a ground window is fitted into the rectangular opening.

In addition, the vibration control structure for a wooden building according to the present invention includes a pair of columns arranged opposite to each other, upper horizontal members spanned on tops of the columns, and positions above the leg portions. In the inner space of the rectangular frame with the lower horizontal member connecting the wooden frame members, in the vibration control structure of the wooden building in which the vibration control device is installed directly under the lower horizontal member,
The vibration damping device includes an oil damper in which one of a cylinder and a piston rod is pin-bonded to the mounting surface with the lower surface of the lower horizontal member as a mounting surface, and one end is pin-bonded to the mounting surface and the other end is An oscillating lever pin-joined to the other of the cylinder and the piston rod; an arm having one end joined to an intermediate position of the oscillating lever and the other end pin-joined to one of the pair of pillars; The relative horizontal displacement of the column generated at the installation height of the oil damper with the relative rotation between the column and the lower horizontal member during an earthquake is input to the oil damper in an enlarged state. As described above, the pin joint position between the arm and the swing lever and the pin joint position between the arm and the column are set.

  The vibration control structure for a wooden building according to the present invention is a wooden building constructed by a conventional frame construction method.

Further, as described in claim 10, the vibration damping device according to the present invention has the lower surface or the upper surface of the horizontal member constituting the wooden frame member as an attachment surface, and either the cylinder or the piston rod is attached to the attachment surface. A pin-joined oil damper, a swing lever whose one end is pin-joined to the mounting surface and the other end is pin-joined to the other of the cylinder and the piston rod, and one end are joined to an intermediate position of the swing lever The other end is joined to the horizontal member, and the arm is connected to the horizontal member together with a pin that constitutes the wooden frame member, and the column and the horizontal member are rotated relative to each other during an earthquake. as the relative horizontal displacement of the column caused by the installation height of the oil damper is input to the oil damper in the expanded state with the pin contact between the arm and the swing lever In which the position and the arm and setting the pin junction position between the pillars.

  Although many vibration control technologies have been developed or proposed for wooden buildings, most of them have dampers and related members arranged so as to almost occupy the entire inner space of the rectangular frame surrounded by column beams. It has a structure.

  This is because the damper is arranged near the center of the rectangular frame, and the damper is connected to the upper and lower horizontal members, respectively, so that the interlayer displacement, that is, the relative displacement generated between the upper and lower horizontal members is input to the damper. As a result, the entire inner space of the rectangular frame is almost occupied by the vibration control device, ensuring lighting and ventilation, or leaving an opening that allows people to come and go without compromising aesthetics. It becomes difficult.

  On the other hand, as in Patent Document 2, there are some techniques in which the relative displacement between a pair of opposing columns is input to the damper. However, the damper is arranged near the center of the rectangular frame, and the damper is moved to the left and right. It is the same as the above-mentioned interlayer displacement type in the sense that it is connected to each of the pillars, and the entire inner space of the rectangular frame is occupied by the damper and related members, so that an opening that can be used for the above-described applications is provided. It is still difficult to leave the space inside the rectangular frame.

  In addition, as with the vibration damping device described in Patent Document 2, the use of a viscous damper facilitates downsizing, but in order to increase the overall damping force, multiple installations are indispensable. There are many things that are responsible for occupying the inner space.

  Further, as described above, it is difficult to sufficiently control vibration when the relative rotation angle between the column beam or the column and the base is taken out at the joint and input to the damper (Patent Documents 1 and 4). It is.

  Incidentally, Patent Documents 3 and 5 are few documents that disclose an invention that can leave an opening that allows people to move between adjacent living rooms, but use the relative rotation angle between the pillar and the base in the joint. Because it is a thing, after all, sufficient vibration suppression cannot be expected.

  Although Patent Document 5 discloses a vibration damping device that can expand in advance the relative displacement input to the damper by a link mechanism, it is difficult to obtain a sufficient expansion ratio because of the pin position.

  Based on this knowledge, the applicants ensure lighting and ventilation, or leave an opening where people can come and go, even when the relative rotation angle between the column beam or the column and the base is input to the damper. As a result of research and development of a technique capable of sufficient vibration suppression, the present invention has been made.

  That is, in the vibration damping device and the vibration damping structure of a wooden building using the same according to the present invention, the lower surface of the upper horizontal member, the upper surface of the lower horizontal member, and the lower surface of the auxiliary horizontal member constituting the wooden frame member Alternatively, the upper surface or the lower surface of the lower horizontal member is used as the mounting surface, and either one of the cylinder or piston rod of the oil damper is connected to the mounting surface, and one end of the swing lever is connected to the same mounting surface. The end of the arm is pin-bonded to the other of the cylinder and piston rod, and the other end of the arm is pin-bonded to the middle of the rocking lever. The pin joint position between the arm and the swing lever, that is, the middle of the swing lever, so that the horizontal displacement is larger than the relative horizontal displacement of the column at the installation height of the oil damper. And location, have set pin joining position between the arm and the bar.

  In this way, when the pair of pillars tilts to the left and right according to the swing of the entire building, the arm swings the swing lever around the horizontal axis according to the tilt, and the swing lever Relative horizontal displacement occurs at the tip of the cylinder, and the relative horizontal displacement is transmitted to the oil damper. The oil damper has a relative horizontal displacement that is larger than the relative horizontal displacement of the column at the installation height of the oil damper. Entered.

  For this reason, even if the relative horizontal displacement input to the oil damper is smaller than the interlayer displacement, a relative displacement that can be sufficiently compensated by the damping capacity of the oil damper is input, and thus the shaking of the building is shortened for a short time. Can converge.

  Especially for wooden buildings constructed by the conventional frame construction method, the degree of joint (rotational rigidity) between the column and the horizontal member is relatively small, and the column tilts to the left and right at an angle close to the interlayer deformation angle during an earthquake. Therefore, a sufficiently large relative horizontal displacement can be input to the oil damper.

Further, in the present invention, the vertical distance from the pin joint position of the column to the mounting surface with the other end of the arm is H ₁ , and the pin on the mounting surface from the pin position at the other end of the swing lever, that is, the connecting point with the oil damper. When the vertical distance to the position is H, the relative horizontal displacement δh generated in the column at the damper installation height is the pin position at the other end of the arm,
(H ₁ / H) · δh (1)
It becomes. Here, since the interlayer deformation angle of the building is small, it is approximated that this relative horizontal displacement is transmitted to the intermediate position of the rocking lever with almost the same size.

On the other hand, from the middle position of the swing lever to the other end,
(H / H ₂ ) (2)
The relative horizontal displacement at the other end of the swing lever is
(H ₁ / H ₂ ) · δh (3)
Therefore, the relative horizontal displacement δh generated in the column at the damper installation height at the other end of the swing lever is
α = (H ₁ / H ₂ ) (4)
It can be considered that the signal is transmitted to the other end of the swing lever in a state where it is enlarged by a magnification multiplied by the coefficient α determined by the above and input to the oil damper.

Here, since α is determined by the ratio of H ₁ and H ₂ , when setting the pin joint position between the arm and the swing lever and the pin joint position between the arm and the column, for example, H ₁ is H _2. As described above, it can be considered that the setting is preferably at least twice H ₂ , more preferably at least three times H ₂ .

  On the other hand, the above formula includes approximations such as linear shear deformation of the column from the lower surface of the beam, so create a vibration model or perform analysis, or create a specimen. It is more desirable to set the pin joint position between the arm and the swing lever and the pin joint position between the arm and the column by performing the test.

  As described above, according to the vibration damping device and the vibration damping structure of a wooden building using the vibration damping device according to the present invention, the relative horizontal displacement is extracted from the inclination of the column due to the shaking of the building due to the earthquake motion, and is installed at the height. It is possible to input the relative displacement, which is increased by α times, to the oil damper rather than directly inputting the relative horizontal displacement to the oil damper.

  Therefore, for example, when the pin joint position between the other end of the arm and the column is matched to the installation height of the oil damper, and the middle point of the swing lever is the pin joint position to which one end of the arm is attached, α is 2. Of the three equally-divided points of the swing lever, if the point close to the mounting surface is the pin position where one end of the arm is mounted, α will be 3, and the magnification of the relative horizontal displacement input to the oil damper will be It becomes possible to improve significantly compared with the past.

  For example, in the case of the vibration damping device described in Patent Document 5, if the enlargement ratio is to be doubled, the second link member in the description of the document is a point close to the beam among the three equally divided points. Although it is necessary to be pin-joined to the beam, a large bracket is required (see FIG. 1 of the same document). However, in the present invention, one end of the swing lever may be pin-joined to the mounting surface. The mounting bracket is very simple. In addition, when the length of the second link member described in the same document and the swing lever of the present invention are the same, in the case where the enlargement ratio is 2 in the vibration control device described in the same document, the present invention expands. The rate is 3.

  In the vibration damping device of the present invention, the installation area is at least one directly below the upper horizontal member and immediately above the lower horizontal member, at least one directly below and directly above the auxiliary horizontal member, or the lower horizontal member. It is installed in the inner space of the rectangular frame so that the area except for the installation area is a rectangular opening.

  Therefore, the rectangular opening left in the rectangular frame as an area excluding the installation area of the vibration damping device can be used as an opening for daylighting and ventilation. As an opening for going back and forth, the adjacent living room can be integrated by forming the opening continuously in the room to form a large space.

When the installation area is at least one directly below the upper horizontal member and immediately above the lower horizontal member in the relationship between the installation area of the damping device in the rectangular frame and the rectangular opening remaining in the rectangular frame Includes the following specific configuration:
(a) The installation area is directly below the upper horizontal member and directly above the ceiling installed below the upper horizontal member, and has an opening sandwiched between the ceiling and the floor plate provided below the ceiling. A rectangular opening is used, and the rectangular opening can be moved between adjacent rooms.
(b) The installation area is directly below the upper horizontal member and directly above the lower horizontal member, and the opening sandwiched between them is a rectangular opening, and a waist window is fitted into the rectangular opening.
(c) Adopt a configuration in which the installation area is set directly above the lower horizontal member, the opening extending directly below the upper horizontal member is a rectangular opening, and a high window is fitted into the rectangular opening. Can do.

In addition, when the installation area is at least one directly below and just above the auxiliary horizontal member, the following configuration, that is,
(d) A rectangular opening is defined as an opening extending above the installation area when the upper surface of the auxiliary horizontal member is used as the mounting surface or above the auxiliary horizontal member when the lower surface of the auxiliary horizontal member is used as the mounting surface. Fit the high window into the rectangular opening
(e) A rectangular opening is an opening extending below the auxiliary horizontal member when the upper surface of the auxiliary horizontal member is the mounting surface or below the installation area when the lower surface of the auxiliary horizontal member is the mounting surface. A configuration in which a ground window is fitted into the rectangular opening can be employed.

  Among such specific configurations, (a) is to install a vibration control device in the space behind the ceiling so that a rectangular opening is formed between the ceiling and the floorboard, and adjacent living rooms are integrated through the rectangular opening. And a large space can be formed.

  In (b), the standard lighting and ventilation can be secured by the waist window, and the degree of contribution to damping can be increased by the damping device arranged in two stages above and below.

  In addition, (c) is a configuration that can be used mainly on the outer wall facing the living room where privacy is to be secured. The lower part of the outer wall is used as a space for vibration control, while the upper part is used as an opening for daylighting. As a result, it is possible to block the line of sight from the outside while contributing to vibration suppression of the entire building, and to ensure high quality lighting unique to the so-called high side light.

  In (d) and (e), the middle height position of the pillar is used as a space for vibration control, and a high window or a ground window is fitted into the rectangular opening left above and below the column. As a result, it is possible to secure good quality lighting unique to so-called high-side lights or to ensure ventilation unique to the ground window while blocking the line of sight from the outside while contributing to vibration control of the entire building.

The front view of the damping structure of the wooden building which concerns on this embodiment. The front view of the vibration damping device which concerns on this embodiment. The figure which showed the effect | action of the damping device which concerns on this embodiment, and the damping structure of a wooden building using the same. Explanatory drawing which showed the effect | action of the damping device which concerns on this embodiment. The whole front view which showed the damping structure of the wooden building which concerns on a modification. The whole front view which showed the damping structure of the wooden building which concerns on another modification. The whole front view which showed the damping structure of the wooden building which concerns on another modification. The whole front view which showed the damping structure of the wooden building which concerns on another modification.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a vibration damping device and a vibration damping structure of a wooden building using the same according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a front view showing a vibration control structure of a wooden building according to the present embodiment, and FIG. 2 is a front view of a vibration control device used therefor. As shown in these drawings, the vibration damping structure 1 for a wooden building according to the present embodiment is a rectangular building standing on the first floor of such a wooden house, where the wooden house constructed by the conventional frame construction method is a wooden building. A vibration damping device 6 is arranged in the inner space of the frame 5.

  The rectangular frame 5 includes a base 4 as a lower horizontal member mounted on a reinforced concrete cloth foundation (not shown), a pair of pillars 2 and 2 erected on the base 4, and tops thereof. It consists of a beam 3 as an upper horizontal member that is bridged.

  As shown in FIG. 2, the damping device 6 includes an oil damper 21 disposed below the beam 3, a swing lever 25 connected to the oil damper, and an arm 26 connected to the swing lever. It is generally composed.

  In the oil damper 21, a piston (not shown) is reciprocally disposed in a cylinder 22 and a piston rod 23 is erected on the piston. The piston rod 23 has its tip on the lower surface of the beam 3. As a mounting surface, it is connected to a lower end of a bracket 24 suspended from the mounting surface via a pin 29.

  One end of the swing lever 25 is connected to the lower surface of the beam 3 as an attachment surface via a pin 30, and the other end is connected to the cylinder 22 of the oil damper 21 via a pin 31.

  One end of the arm 26 is connected to an intermediate position of the swing lever 25 via a pin 28, and the other end is connected to a side surface of the column 2 via a pin 27.

  The height of the bracket 24 may be determined as appropriate so that the oil damper 21 is held substantially horizontally while taking the length of the swing lever 25 into consideration.

  In configuring the swing lever 25 and the arm 26, the relative horizontal displacement at the time of the earthquake input to the oil damper 21 is larger than the relative horizontal displacement of the column 2 at the installation height of the oil damper. The position of the pin 28 that is the joining position of the arm 26 and the swing lever 25 and the position of the pin 27 that is the pin joining position of the arm 26 and the column 2 are set.

  On the other hand, the vibration damping device 6 is arranged so that the space inside the rectangular frame 5 is directly below the beam 3 and directly above the ceiling 7 installed below the beam, that is, the space behind the ceiling is the installation area. Among the areas excluding the installation area, the rectangular opening 9 sandwiched between the ceiling 7 and the floor plate 8 provided below the ceiling 7 is arranged to be an opening that can be moved between adjacent living rooms.

  In the vibration damping device 6 according to the present embodiment and the vibration damping structure 1 of a wooden building using the same, when the pair of pillars 2 and 2 are inclined to the left and right according to the shaking of the entire building, the arm 26 is shown in FIG. As shown, according to the inclination of the pillar 2, the swing lever 25 is alternately swung counterclockwise (the same figure (a)) and clockwise (the same figure (b)) with the pin 30 as the center of rotation. The swing causes a relative horizontal displacement at the tip of the swing lever, and the relative horizontal displacement is transmitted to the oil damper 21. The relative horizontal displacement is detected by the arm 26 and the swing lever 25 by the damper installation height. It is input to the oil damper 21 in a state of being larger than the relative horizontal displacement of the column 2 at that time.

That is, as shown in FIG. 4A, the vertical distance from the pin 27, which is the pin joining position of the arm 26 and the column 2, to the mounting surface is H ₁ , and the joining position of the swing lever 25 and the oil damper 21. Assuming that the vertical distance from a certain pin 31 to the pin 30 on the mounting surface is H, the relative horizontal displacement δh generated in the column 2 at the damper installation height is as follows at the pin 27 at the other end of the arm 26:
(H ₁ / H) · δh (1)
It becomes. Here, since the interlayer deformation angle of the building is small, it is approximated that this relative horizontal displacement is transmitted to the pin 28, which is the intermediate position of the swing lever 26, with almost the same size.

On the other hand, from the pin 28 which is an intermediate position of the swing lever 25 to the pin 31 which is the other end,
(H / H ₂ ) (2)
It is expanded by the ratio.

Therefore, the relative horizontal displacement at the pin 31 which is the other end of the swing lever 25 is
(H ₁ / H ₂ ) · δh (3)
Therefore, the relative horizontal displacement δh generated in the column at the damper installation height is
α = (H ₁ / H ₂ ) (4)
It can be considered that this is expanded by a coefficient α determined by the following equation, and this expanded relative horizontal displacement is input to the oil damper 21.

Specifically, for example, when the pin 28 that is an intermediate position of the swing lever 25 is the midpoint of the swing lever and the pin 27 that is the other end of the arm 26 is equal to the damper installation height, that is, H ₁ is in H, if _{H 2} is H / 2 (FIG. 4 (b)), α is 2.

Similarly, when H ₁ is H / 2 and H ₂ is H / 2 (FIG. 4C), α is 1, H ₁ is (3/4) · H, and H ₂ is H / 2. In the case (FIG. 4 (d)), α is 1.5, H ₁ is (3/2) · H, and H ₂ is H / 2 (FIG. 4 (e)), α is 3, and H ₁ is When H and H ₂ are H / 3 (FIG. 4 (f)), α is 3.

  As described above, according to the vibration damping device 6 and the vibration damping structure 1 of the wooden building using the vibration damping device 1 according to the present embodiment, the relative horizontal displacement is extracted from the inclination of the column 2 caused by the shaking of the building due to the earthquake motion, It is possible to input the horizontal relative displacement, which is larger by α times, to the oil damper 21 than to directly input the relative horizontal displacement to the oil damper 21 installed at the height.

  Therefore, for example, in a state where the pin 27 that is the joining position of the other end of the arm 26 and the column 2 is adjusted to the installation height of the oil damper 21, the midpoint of the swing lever 25 is the joining position where one end of the arm 26 is attached. Α is 2 when the position of the pin 28 is, and α is 3 when the position close to the mounting surface among the three equally divided points of the swing lever 25 is the position of the pin 28, thus the oil damper. It is possible to greatly increase the magnification of the relative horizontal displacement input to 21 as compared with the prior art.

  Moreover, according to the vibration control structure 1 of the wooden building according to the present embodiment, the column 2 is formed at an angle close to the interlayer deformation angle in the event of an earthquake by targeting the wooden building constructed by the conventional frame construction method. , 2 are inclined to the left and right.

  Therefore, although the relative horizontal displacement input to the oil damper 21 is smaller than the interlayer displacement, the amount of reduction is limited to the extent that it can be sufficiently compensated by the damping capacity of the oil damper 21, and the above-described expansion rate of the relative horizontal displacement is Combined with the improvement, it is possible to converge the shaking of the building in a short time.

  In addition, according to the vibration damping structure 1 for a wooden building according to the present embodiment, the installation area of the vibration damping device 6 is set directly above the ceiling 7 directly below the beam 3 and below the beam. Since the rectangular opening sandwiched between the floor plate 8 is the opening 9 that can be moved between the adjacent living rooms, the adjacent living rooms can be integrated through the opening to form a large living space.

  In the present embodiment, for the sake of convenience of explanation, an example in which vibration suppression is performed on the first floor has been described, but it goes without saying that the vibration control structure of a wooden building according to the present invention can be similarly applied to upper floors such as the second floor and the third floor. Yes.

  Further, in this embodiment, the installation area of the vibration damping device 6 is directly below the beam 3 and directly above the ceiling 7. However, if a rectangular opening remains in the inner space of the rectangular frame 5, the vibration damping device 6 It does not matter how the device 6 is installed.

  FIG. 5 is a front view showing such a modification. In the wooden building damping structure 41 shown in the figure, the installation area of the damping device 6 is set directly below the torso 3a as the upper horizontal member and directly above the base 4, and immediately below the torso 3a. The vibration damping device 6 is hidden by the vertical wall 42 and the vibration damping device 6 installed immediately above the base 4 is hidden by the waist wall 43, and a waist window is fitted into a rectangular opening 44 sandwiched between them.

  According to such a configuration, it is possible to increase the degree of contribution to damping by the damping devices 6 and 6 that are arranged in two stages above and below while securing standard lighting and ventilation by the waist window. .

  FIG. 6 is a front view showing another modified example. The vibration damping structure 51 of the wooden building shown in the figure has a rectangular opening extending directly below the torso 3a with the installation area of the vibration damping device 6 directly above the base 4 and concealing the vibration damping device with a wall 52. A high window is fitted in 53.

  According to such a configuration, while using the lower part of the wall 52 as a space for vibration control and using the upper part as the opening 53 for daylighting, the vibration control device 6 contributes to vibration control of the entire building. It is possible to block the line of sight from the outside with the wall 52 where the light source is installed, and to secure high-quality lighting peculiar to the so-called high side light through the opening 53.

  Instead of setting the area directly above the base 4 as the installation area of the damping device 6, as shown in FIG. 7, the auxiliary horizontal member 61 is bridged over the intermediate height of the columns 2 and 2, and the auxiliary horizontal member By installing the vibration damping device 6 with the lower surface as a mounting surface, the area directly below the auxiliary horizontal member 61 is used as the installation region of the vibration damping device 6 and the vibration damping device is hidden by the wall 52a and is rectangular in a shape that extends upward. A high window may be fitted into the opening 53a, and a ground window may be fitted into the rectangular opening 53b extending downward.

  According to such a configuration, the area extending to the intermediate height of the rectangular frame 5 can be used as the installation area of the vibration damping device 6, and the upper and lower sides thereof can be used as the openings 53a and 53b for daylighting and ventilation. While contributing to vibration control of the entire building, while blocking the line of sight from the outside with the wall 52a, the aperture 53a secures high quality lighting peculiar to so-called high-side lights, and the ventilation function peculiar to the ground window Can be secured.

  In addition, the inclination angle of the columns 2 and 2 at the time of the earthquake is restricted at the joint part even in the conventional shaft assembly method, and the intermediate height position is larger than the top part and the end part. . Therefore, if configured as described above, it is possible to increase the relative displacement input to the oil damper 21.

  In the modification described above, the vibration control device 6 is installed with the lower surface of the auxiliary horizontal member 61 as the mounting surface, so that the installation region of the vibration control device 6 is directly below the auxiliary horizontal material 61. Instead of this, by installing the vibration damping device 6 with the upper surface of the auxiliary horizontal member 61 as the mounting surface, the area directly above the auxiliary horizontal member 61 may be set as the installation region of the vibration damping device 6.

  Although not particularly mentioned in this embodiment, there are cases where pillars are connected to each other by foot consolidation in the vicinity of their legs as in an old private house constructed by a traditional construction method. That is, when there is room in the underfloor space, as shown in FIG. 8, the vibration damping device 6 is installed with the lower surface of the foot support 81 that is the lower horizontal member connecting the vicinity of the legs of the columns 2 and 2 as the mounting surface. May be.

1, 41, 51 Damping structure of wooden building 2 Column 3 Beam (upper horizontal member)
3a Torso (upper horizontal member)
4 Foundation (Lower horizontal member)
5 Rectangular frame 6 Damping device 7 Ceiling 8 Floor plate 9, 44, 53 Rectangular opening 21 Oil damper 22 Cylinder 23 Piston rod 25 Swing lever 26 Arms 27, 28, 29, 30, 31 Pin 61 Auxiliary horizontal member

Claims (10)

A pair of pillars arranged opposite to each other, an upper horizontal member spanned over the tops of the columns, and a lower horizontal member connecting the leg portions, which is an inner space of a rectangular frame having a wooden frame member, the upper horizontal member Vibration control of a wooden building in which a vibration control device is installed so that at least one of the area directly below the frame and the area directly above the lower horizontal frame is an installation area, and the area excluding the installation area is a rectangular opening. In structure
The vibration damping device includes an oil damper having a lower surface of the upper horizontal member or an upper surface of the lower horizontal member as an attachment surface, and one of a cylinder and a piston rod pin-connected to the attachment surface, and one end of the attachment. One of the swing lever, which is pin-bonded to the surface and the other end is pin-bonded to the other of the cylinder and the piston rod, and one end of which is joined to the middle position of the swing lever and the other end is the pair of columns. The structure is composed of an arm pin-joined on one side, and the relative of the columns generated at the installation height of the oil damper with the relative rotation of the column and the upper horizontal member or the lower horizontal member during an earthquake. setting the horizontal displacement, so as to be inputted to the oil damper in the expanded state, the pin junction position between the arm and the pin junction position and the arm and the pillar of the swing lever Damping structure of the wooden building, characterized in that it was. The installation area is directly below the upper horizontal member and directly above the ceiling installed below the upper horizontal member, and an opening sandwiched between the ceiling and a floor plate provided below the upper horizontal member is the rectangular. The vibration control structure of a wooden building according to claim 1, wherein the opening is shaped and configured so that the rectangular opening can be moved between adjacent living rooms. The installation area is set directly below the upper horizontal member and directly above the lower horizontal member, the opening sandwiched between them is the rectangular opening, and a waist window is fitted into the rectangular opening. Item 1. A vibration-damping structure for a wooden building. 2. The installation area according to claim 1, wherein the installation region is directly above the lower horizontal member, the opening extending directly below the upper horizontal member is the rectangular opening, and a high window is fitted into the rectangular opening. Damping structure of a wooden building. A pair of columns arranged opposite to each other, an upper horizontal member spanning the tops thereof, a lower horizontal member connecting the legs, and an auxiliary horizontal member spanning the intermediate height of the pair of columns Is an inner space of a rectangular frame using a wooden frame member, and at least one of directly below and above the auxiliary horizontal member is an installation area, and an area excluding the installation area is a rectangular opening. In the vibration control structure of a wooden building with a vibration control device installed in
The damping device includes an oil damper in which either the cylinder or the piston rod is pin-joined to the mounting surface with the upper or lower surface of the auxiliary horizontal member as the mounting surface, and one end is pin-joined to the mounting surface. A swing lever whose end is pin-joined to the other of the cylinder and the piston rod, one end is joined to an intermediate position of the swing lever, and the other end is pin-joined to one of the pair of pillars The oil damper in a state where the relative horizontal displacement of the pillar caused by the relative height between the pillar and the auxiliary horizontal member at the time of an earthquake is enlarged at the installation height of the oil damper. as input to, control of wooden structures, characterized in that setting the pin junction position between the arm and the pin junction position and the arm and the pillar of the swing lever Structure. When the upper surface of the auxiliary horizontal member is an attachment surface, the rectangular opening is an opening that extends above the installation area or when the lower surface of the auxiliary horizontal member is an attachment surface. 6. A vibration control structure for a wooden building according to claim 5, wherein a high window is fitted into the rectangular opening. When the upper surface of the auxiliary horizontal member is used as an attachment surface, the rectangular opening is an opening extending below the auxiliary horizontal member or below the installation area when the lower surface of the auxiliary horizontal member is used as an attachment surface. 6. A vibration control structure for a wooden building according to claim 5, wherein a ground window is fitted into the rectangular opening. Of the inner space of the rectangular frame that uses a pair of pillars arranged opposite to each other, an upper horizontal member spanned over the tops thereof, and a lower horizontal member that connects the upper positions of the legs as a wooden frame member, In the vibration control structure of a wooden building where a vibration control device is installed directly under the lower horizontal member,
The vibration damping device includes an oil damper in which one of a cylinder and a piston rod is pin-bonded to the mounting surface with the lower surface of the lower horizontal member as a mounting surface, and one end is pin-bonded to the mounting surface and the other end is An oscillating lever pin-joined to the other of the cylinder and the piston rod; an arm having one end joined to an intermediate position of the oscillating lever and the other end pin-joined to one of the pair of pillars; The relative horizontal displacement of the column generated at the installation height of the oil damper with the relative rotation between the column and the lower horizontal member during an earthquake is input to the oil damper in an enlarged state. As described above, a vibration damping structure for a wooden building is characterized in that a pin joint position between the arm and the swing lever and a pin joint position between the arm and the column are set. The damping structure for a wooden building according to any one of claims 1 to 8, wherein the wooden building is a wooden building constructed by a conventional frame construction method. An oil damper in which either the cylinder or the piston rod is pin-bonded to the mounting surface with the lower or upper surface of the horizontal member constituting the wooden frame member as the mounting surface, and one end is pin-bonded to the mounting surface and the other end A swing lever that is pin-joined to the other of the cylinder and the piston rod, and one end joined to the intermediate position of the swing lever and the other end joined to the horizontal member, and the wooden frame assembly together with the horizontal member And a horizontal displacement of the column that occurs at the installation height of the oil damper due to relative rotation between the column and the horizontal member during an earthquake. , as input to the oil damper in the expanded state, setting the pin junction position between the arm and the pin junction position and the arm and the pillar of the swing lever this Vibration damping device according to claim.

Images