JP5568343B2 - Vibration control device for wooden buildings - Google Patents

Description

  The present invention relates to a vibration control device provided in a wooden building by a frame wall construction method.

  In recent years, construction examples that use vibration control devices are also increasing in wooden buildings. However, in wooden buildings, errors are likely to occur between the design dimensions and the actual building dimensions. It is desirable to be able to install it corresponding to. Therefore, in the case of Patent Document 1, in order to improve the workability on site, the applicant of the present invention inserts and joins shaft-like extension wood to both ends of the viscoelastic damper, and adjusts the length of the extension wood to correct the error on site. In response to the above, the invention of a damping damper that is installed in a brace shape in the shaft assembly is provided. In Patent Document 2, male screw portions are provided at both ends of the viscoelastic damper, a brace body is connected to one end, and a male screw portion provided at the other end and a male screw portion provided at the brace body are respectively connected to the joint portion. The invention of the damping damper which can respond to the error on the spot by adjusting the fixing position by a screw part is provided by fixing in a brace form in a shaft set via a hole down metal.

JP 2009-203747 A JP 2009-228276 A

  However, the inventions according to Patent Documents 1 and 2 are all directed to wooden buildings by the shaft construction method, and cannot be adopted for the frame wall construction method. This is because the frame wall construction method has a smaller frame thickness than the shaft construction method and is likely to be limited in size, and a vertical frame is provided in the frame, so that the frame surface becomes narrow.

  Therefore, the present invention provides a seismic control device for a wooden building that can be used well within a framework and can be constructed even in a narrow frame plane, as well as improving the workability on site in the framework wall construction method. It is intended.

In order to achieve the above object, the invention according to claim 1 is characterized in that the left and right frame surfaces of a central vertical frame in a frame having upper and lower horizontal members, left and right vertical frames, and a central vertical frame. Two dampers that exhibit damping performance due to external force in the axial direction are placed inside, and one end in the axial direction of each damper is the joint between the horizontal member facing the diagonal of the frame and the left and right vertical frames each is attached to the parts, to connect the extension timber in the axial direction of the other end of each damper, the end of the extension timber, the two left and right portions of the damper and extended wood across the vertical frame of the central X-shaped brace It is a seismic control device for a wooden building that is attached to a central vertical frame so that the ends of the extended lumber positioned up and down in each frame surface are connected by a fixing tool. Insert a pair of fixtures located on the left and right of the vertical frame through the central vertical frame. Connected to each other by bolts, it is characterized in that fixed to the central longitudinal frame.
In order to achieve the above object, the invention described in claim 2 is constructed in a frame having upper and lower horizontal members, left and right vertical frames, and a vertical frame at the center thereof, and is damped by an external force in the axial direction. This is a wooden building vibration control device equipped with a damper that exerts the following characteristics: one damper is placed in each of the left and right frame surfaces of the central vertical frame, and one end of the damper in the axial direction is connected to the diagonal of the frame. Attach it to the joint between the horizontal frame and the left and right vertical frames facing each other, connect the extension wood to the other axial end of the damper, and connect the end of the extension wood to the left and right dampers and extension wood. It is characterized by being attached to the central vertical frame so as to form a single brace with the central vertical frame interposed therebetween .
According to a third aspect of the present invention, in the configuration of the second aspect, the fixture is connected to the end of the extended wood within each frame surface, and the fixture is fixed to the central vertical frame. Is.

According to the present invention, it is possible to cope with the building dimensions at the site, and not only the workability is improved, but also it can be used well within a framework with a small thickness and width. Therefore, even a framed wall construction wooden structure can be suitably employed. In addition, since the left and right dampers and the extended wood are connected in a brace shape with the central vertical frame in between, sufficient seismic control performance can be obtained even if the frame surface is narrow.
In particular, according to the first aspect of the present invention, the damper is constructed to be installed on both diagonal lines in the frame, and higher damping performance can be expected.
Moreover , the extension wood can be easily fixed by the fixing tool, and the reliability of the fixing is also increased.
Furthermore , it is possible to easily fix the fixture with the vertical frame in the center.
In particular, according to the second aspect of the present invention, in addition to the above-described effects, fewer members and parts are required for the vibration control device, which is advantageous in terms of cost.
According to the third aspect of the invention, in addition to the effect of the second aspect , the extension wood can be easily fixed by the fixing tool, and the reliability of the fixing is also increased.

It is explanatory drawing of the framework using the damping device of form 1, (A) is a front, (B) shows the right side in a frame surface, respectively. (A) is the A section enlarged view, (B) is a B arrow view. (A) is a C part enlarged view, (B) is a D arrow view. It is explanatory drawing of the fixing tool of the form 1, (A) shows a front surface, (B) shows a right side surface, respectively. It is explanatory drawing of the example of a change of the fixing tool of the form 1, (A) shows a front surface, (B) shows a right side surface, respectively. It is explanatory drawing of the fixing tool of the example of a change, (A) shows a front surface, (B) shows a right side surface, respectively. It is a front view of the framework using the damping device of form 2. (A) is an E section enlarged view, (B) is a F arrow view. It is explanatory drawing of the fixing tool of the form 2, (A) shows a front surface, (B) shows a right side surface, respectively. It is explanatory drawing of the example of a change of the fixing tool of the form 2, (A) shows a front surface, (B) shows a right side surface, respectively. It is explanatory drawing of the fixing tool of the example of a change, (A) shows a front surface, (B) shows a right side surface, respectively.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Form 1]
FIG. 1 is a front view of a frame portion of a wooden house by a frame wall construction method. A frame 1 provided between upper and lower structural members (for example, floor joists, floor frame) is an upper frame 2 that is a horizontal member. And the left and right vertical frames 4 and 4 erected in the vertical direction between the lower frame 3 and the upper and lower frames 2 and 3, and the central vertical frame 5 erected in the vertical direction between the vertical frames 4 and 4. And is formed from.
And two damping devices 10 provided in the frame 1 are arranged in the left and right frame surfaces of the vertical frame 5 respectively, and one end is provided at the joint between the upper and lower frames 2, 3 and the vertical frames 4, 4. The four dampers 11, 11... To be connected, the four extension timbers 12, 12... Connected to the other end of each damper 11 in an extended manner, and the extension timbers positioned above and below the vertical frame 5. And a pair of fixtures 13 and 13 for fixing 12 and 12 at the center of the vertical frame 5.

First, as shown in FIG. 2, the damper 11 has a rectangular outer cross section 14 and a rectangular cross section that is slightly smaller than the outer pipe 14, and is partially loosely inserted into the outer pipe 14 coaxially from one end side. From the inner tube 15 and a viscoelastic body (for example, styrene-based, hatched portion in FIG. 2) 16 that is interposed between both tubes at the overlapping portion of both tubes 14 and 15 and that is bonded to the opposite surfaces of both tubes. The formed viscoelastic damper is adopted.
In the damper 11, the end portion of the inner tube 15 is connected to the joint portion. That is, a pair of brackets 17, 17 sandwiching the inner tube 15 in the front-rear direction perpendicular to the frame surface of the frame 1 are screwed to the joint portion, and both the brackets 17, 17 and the inner tube 15 are connected by the pins 18. By connecting, one end of the damper 11 in the axial direction is rotatably attached to the joint.

  The extended wood 12 is connected to the end of the damper 11 on the outer tube 14 side. That is, the tenon portion 19 formed at one end of the extended wood 12 is inserted into the end portion of the outer tube 14 and sandwiched between the pair of plates 20, 20 across the extended wood 12 and the end portion of the outer tube 14. By connecting with the nut 21 and the nut 22 respectively, the extended wood 12 is connected to the damper 11 in an extended manner. The extended wood 12 is made of a single plate laminated material or an accumulated material in addition to a solid material.

  On the other hand, as shown in FIGS. 3 and 4, the fixture 13 for fixing the other end of the extended wood 12 to the vertical frame 5 is provided on the outer side (outer vertical frame 4 side) of the upper and lower extended woods 12 and 12. A belt-like back plate portion 23 that covers the upper and lower sides, and a pair of side plate portions 24 that are bent along the longitudinal edge at the upper and lower sides of the back plate portion 23 and respectively cover the front and rear surfaces of the upper and lower extended woods 12 and 12. , 24. The back plate portion 23 is applied to the side surfaces of the end portions of the upper and lower extension woods 12 and 12 to fix the side plate portions 24 and 24 with screws 25, 25... And the center of the back plate portion 23 in the right and left fixtures 13. The other ends of the upper and lower extended woods 12 and 12 on the left and right of the vertical frame 5 are fastened to each other by a bolt 26 and a nut 27 that penetrate the vertical frame 5 in the left-right direction. Are connected to each other in a non-contact state and are fixed to the vertical frame 5.

In the vibration damping device 10 configured as described above, when mounting in the frame 1, first, the end portion on the inner tube 15 side of the damper 11 having the extension wood 12 connected to the end portion on the outer tube 14 side is attached to the brackets 17, 17. To attach to the joint. At this time, adjustment is performed by cutting the end of the extended wood 12 according to the height of the frame 1 or the like so that the upper and lower extended woods 12 and 12 do not interfere with each other in the contact state with the vertical frame 5.
Then, with the ends of the extended wood 12 in contact with the vertical frame 5, the fixing plate 13 is applied from the outside to screw the side plate portion 24, and the center portions of the left and right back plate portions 23 are bolted to each other. 26 and a nut 27. Accordingly, the vibration control device 10 is installed in an X shape with the vertical frame 5 as the center in the frame 1.

  In the frame 1 to which the seismic control device 10 is attached in this way, when a horizontal external force is repeatedly applied due to an earthquake or the like and the frame surface of the frame 1 is deformed, the damper 11 is alternately compressed and tensile in the axial direction. The outer tube 14 and the inner tube 15 of the damper 11 operate in the opposite axial directions. By this operation, the viscoelastic body 16 is shear-deformed to cause a damping action.

  As described above, according to the vibration damping device 10 of the first aspect, the two dampers 11 are respectively arranged in the left and right frame surfaces of the vertical frame 5, and one end in the axial direction of the damper 11 is connected to the joint of the frame 1. The extension wood 12 is connected to the other end in the axial direction of the damper 11 so that the end portions of the extension wood 12 have a brace shape with the left and right dampers 11 and the extension wood 12 sandwiching the vertical frame 5. By attaching to the vertical frame 5 respectively, it is possible to correspond to the construction dimensions at the site, and the workability is improved, and of course, it fits within the frame with small thickness and left and right width and can be used well. Therefore, even a framed wall construction wooden structure can be suitably employed. In addition, since the left and right dampers 11 and the extended wood 12 are connected in a brace shape with the vertical frame 5 interposed therebetween, sufficient seismic control performance can be obtained even with the frame 1 having a narrow frame surface.

In particular, here, two dampers 11 to which the extended wood 12 is connected are provided in each frame surface and arranged in an X shape with the vertical frame 5 interposed therebetween. A higher seismic control performance can be expected.
Further, the ends of the extended woods 12, 12 positioned vertically in each frame surface are connected to each other by the fixture 13, and the fixture 13 is fixed to the vertical frame 5, so that the extension wood 12 can be fixed easily. The reliability of fixing is also increased.
Further, since the pair of fixing tools 13 and 13 positioned on the left and right of the vertical frame 5 are connected to each other by the bolts 26 penetrating the vertical frame 5, the fixing tools 13 and 13 sandwiching the vertical frame 5 can be easily fixed. Can be done.

  In addition, a fixture is good also as a shape of only a back-plate part without a side-plate part like the fixture 13a shown to FIG. In this case, the upper and lower portions of the fixture 13a are fixed to the side surfaces of the extended woods 12 and 12 by screws 25, respectively. In this way, the shape of the fixture is simplified, the cost associated with the vibration control device is suppressed, and the thickness dimension perpendicular to the frame surface can be reduced. However, the effect of preventing the extension lumber 12 from protruding out of the frame surface becomes greater when the end of the extension lumber is held in a U-shape with a side plate as in the first mode.

Next, another embodiment will be described. However, the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted.
[Form 2]
In the frame 1 shown in FIG. 7, the vibration control devices 10 a are arranged one by one on the left and right of the vertical frame 5, and two dampers 11, one end of which is connected to a pair of joints facing diagonal lines of the frame 1, 11, two extension timbers 12, 12 connected to the other end of each damper 11 in an extended manner, and a fixture 28 for fixing the end of each extension timber 12 to the vertical frame 5 on the left and right sides of the vertical frame 5 Comprising. The structure of the damper 11, the attachment structure to the joint portion, and the connection structure of the extended wood 12 to the damper 11 are the same as in the first embodiment.

  As shown in FIGS. 8 and 9, the fixture 28 used here is a belt-like back plate portion 29 that contacts the side surface of the extended wood 12, and is folded along the longitudinal edge at one end of the back plate portion 29. It is a U-shape that is formed of a pair of side plates 30 and 30 sandwiching the front and rear surfaces of the extended wood 12 and is vertically held with the extended wood 12 held at one end on the other end of the back plate 29. A mounting portion 31 that abuts against the side surface of the frame 5 is formed.

In the vibration damping device 10a configured as described above, when mounting in the frame 1, first, the end portion on the inner tube 15 side of the damper 11 having the extension wood 12 connected to the end portion on the outer tube 14 side is attached to the brackets 17 and 17. To attach to the joint. At this time, the ends of the extended wood 12 are cut in accordance with the height of the frame 1 or the like so that the left and right extended woods 12 and 12 are not greatly displaced from the same straight line in contact with the vertical frame 5. Adjust.
Then, with the end portions of the extended wood 12 in contact with the vertical frame 5, the fixture 28 is applied from the outside to fix the side plate portion 30 with the screws 25, 25. Screw the screws 32, 32... Into the vertical frame 5 and the extended wood 12 on the opposite side. Thus, the vibration control device 10a is installed in a brace shape within the frame 1.

  As described above, also in the vibration damping device 10 a of the second embodiment, one damper 11 is arranged in each of the left and right frame surfaces of the vertical frame 5, and one end in the axial direction of the damper 11 is on the diagonal line of the frame 1. The extension wood 12 is connected to the other end of the damper 11 in the axial direction, and the end of the extension wood 12 is sandwiched between the left and right dampers 11 and the extension wood 12 with the vertical frame 5 interposed therebetween. By attaching each to the vertical frame 5 so as to form a brace shape, it is possible to cope with the building dimensions at the site, and the workability is improved. Therefore, even a framed wall construction wooden structure can be suitably employed. In addition, since the left and right dampers 11 and the extended wood 12 are connected in a brace shape with the vertical frame 5 interposed therebetween, sufficient seismic control performance can be obtained even with the frame 1 having a narrow frame surface.

In particular, here, the damper 11 to which the extended wood 12 is connected is provided in each frame surface and arranged in a single brace with the vertical frame 5 interposed therebetween. Compared to the above, only half of the necessary members and parts are required, which is advantageous in terms of cost.
Further, by fixing the fixtures 28 to the end portions of the extension timbers 12 in each frame surface and fixing the fixtures 28 to the vertical frames 5, the extension timbers 12 can be easily fixed by the fixtures 28, respectively. , Fixed reliability also increases.

Note that the fixture here may also have a shape of only the back plate portion without the side plate portion, like the fixture 28a shown in FIGS. Further, the damper and the extended wood may be arranged on opposite diagonal lines.
In common with the first and second aspects, in addition to eliminating the side plate portion, the fixture may be changed so that the side plate portion is conversely extended until it straddles the central vertical frame and connected to the vertical frame.
However, a fixing tool is not always necessary, and it is possible to fix the end of the extended wood directly to the central vertical frame with bolts or screws without using the fixing tool.

  1 .... Frame, 2 .... Upper frame, 3 .... Lower frame, 4,5 ... Vertical frame, 10,10a ... Damping device, 11 .... Damper, 12 .... Extension wood, 13, 13a, 28 28a ··· Fixing device, 14 · · Outer tube, 15 · · Inner tube, 16 · · Viscoelastic body, 21, 26 · · Bolt, 22, 27 · · Nut, 23, 29 · · Back plate portion, 24 , 30 .. side plate part, 25, 32 .. screw, 31 .. mounting part.

Claims (3)

2 dampers that exhibit damping performance by external force in the axial direction are provided in the left and right frame surfaces of the central vertical frame in the frame structure having upper and lower horizontal members, left and right vertical frames, and a central vertical frame. one each arranged, the one axial end of each of the damper, is attached respectively to the Joint portion between the horizontal members of diagonally opposite left and right vertical frame of said framework, the axial direction of each said damper An extension wood is connected to the other end, and the end of the extension wood is arranged at the center vertical so that the two dampers and the extension wood are in the form of an X-shaped brace sandwiching the center vertical frame. It is a vibration control device for wooden buildings attached to each frame ,
The ends of the extended timber positioned vertically within each frame surface are connected to each other by a fixing tool, and a pair of the fixing tools positioned on the left and right of the central vertical frame are passed through the central vertical frame. A vibration control device for a wooden building , wherein the vibration control device is connected to each other by bolts to be fixed and fixed to the central vertical frame . A vibration control device for a wooden building provided with a damper that is installed in a frame having upper and lower horizontal members, left and right vertical frames, and a vertical frame at the center thereof, and that exhibits a damping performance by an external force in the axial direction. ,
One damper is arranged in each of the left and right frame surfaces of the central vertical frame, and one end in the axial direction of the damper is opposed to the horizontal member and the left and right vertical frames opposite to each other on the diagonal of the frame. The extension wood is connected to the other end in the axial direction of the damper, and one end of the extension wood is sandwiched between the left and right dampers and the extension wood sandwiching the central vertical frame. A vibration control device for a wooden building, which is attached to each of the central vertical frames so as to form a brace . 3. The vibration control of a wooden building according to claim 2 , wherein a fixture is connected to each end of the extended wood in each frame surface, and the fixture is fixed to the central vertical frame. apparatus.

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