Vibration damping device and installation structure of vibration damping device

Abstract

To provide a vibration control device capable of improving energy absorption performance of a column-beam structure for a wooden building.SOLUTION: A vibration control device 50 arranged in a column-beam structure 1 configured to include wooden columns 2 and wooden beams 3 is provided with: a plurality of leg parts 51 placed below beams; a long lateral beam part 52 placed over between upper ends of the plurality of leg parts 51 and placed parallel to the beams; a plurality of elastic damper parts 53 aligned fixed in a longitudinal direction of an upper surface of the lateral beam part 52; and a long beam connection part 54 connected to each of the plurality of elastic damper parts 53 and fixed on a lower surface of the beam 3 and going along a longitudinal direction of the lateral beam part 52.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a vibration control device and an installation structure of the vibration control device.

Background Art

[0002] Conventionally, techniques for constructing relatively large-scale wooden buildings, such as mid-rise and high-rise wooden buildings or wooden buildings with a large floor area, are known. For example, in Patent Document 1, a column-beam framework capable of constructing a relatively large-scale wooden building is constructed by firmly joining a wooden built-up column formed in a square tube shape and a wooden built-up beam with a box-shaped joint metal.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in recent years, the realization of a decarbonized society through the promotion of carbon neutrality, which substantially reduces carbon dioxide emissions, and the achievement of the goals of SDGs (Sustainable Development Goals) are required. In the construction industry as well, efforts are being made to use wooden materials for mid-rise and high-rise buildings with low carbon dioxide emissions. Therefore, when constructing a large-scale wooden building, for example, in order to be able to more sufficiently resist horizontal loads during earthquakes and typhoons, the introduction of a technology for enhancing the energy absorption performance of the column-beam framework that constitutes the wooden building is required.

[0005] The present invention has been made in view of the above circumstances, and the problem thereof is to improve the energy absorption performance of the column-beam framework in a wooden building.

Means for Solving the Problems

[0006] The invention described in claim 1 is a vibration damping device 50 provided within a column-beam frame 1, which is composed of wooden columns 2 and wooden beams 3, as shown in Figures 1 to 12, for example, A plurality of leg portions 51 are positioned below the beam, A long horizontal section 52 is provided, which is spanned between the upper ends of the multiple leg sections 51 and arranged parallel to the beam, Multiple units of the upper surface of the horizontal section 52 are fixed in a row along the length direction. Vibration damping The damper section 53 and The aforementioned multiple Vibration damping Each of the damper sections 53 is connected to a beam connecting section 54 which is fixed to the lower surface of the beam 3 and is elongated along the length of the horizontal section 52. The main part that contacts the column-beam frame 1 is the beam connecting portion 54, and the plurality of leg portions 51 are fixed to the column 2. figure, The horizontal section 52 has a recess surrounded by the web and the upper and lower flanges, to which a plurality of stiffeners 521 are joined, positioned in accordance with the gaps between the plurality of vibration damping damper sections 53, and reinforcing the horizontal section 52. It is characterized by the following:

[0007] According to the invention described in claim 1, multiple beam connecting portions 54 are arranged parallel to the beam 3 via elongated beam connecting portions 54 along the longitudinal direction of the horizontal portion 52. Vibration damping Since the damper section 53 can be fixed to the lower surface of the beam 3, multiple Vibration damping The damper section 53 improves the energy absorption performance of the column-beam frame 1 by the vibration damping device 50. For example, during earthquakes and typhoons, horizontal loads are applied to the column-beam frame 1, but in this way multiple Vibration damping The damper section 53 improves the energy absorption performance of the column-beam frame 1, allowing it to adequately resist horizontal loads during earthquakes and typhoons, which is advantageous when constructing relatively large wooden buildings. Furthermore, the horizontal section 52 is reinforced by multiple stiffeners 521 at each mounting position of the multiple vibration damping damper sections 53.

[0008] The invention described in claim 2 is, for example, as shown in Figures 1, 10 to 12, in the vibration damping device 50 described in claim 1, Each of the above Vibration dampingThe damper portion 53 has a rising plate portion 531 fixed to the upper surface of the horizontal portion 52 and projecting toward the beam connecting portion 54, and a damper body 532 with one end joined to the side surface of the rising plate portion 531. The beam connecting portion 54 has a fixing plate portion 541 fixed to the lower surface of the beam 3, and a hanging plate portion 542 that hangs down from the fixing plate portion 541 toward the horizontal portion 52. Each of the above Vibration damping The rising plate portion 531 in the damper portion 53 and the hanging plate portion 542 in the beam connecting portion are arranged parallel and opposite to each other. The other end of the damper body 532 is characterized by being joined to the side surface of the hanging plate portion 542.

[0009] According to the invention described in claim 2, each Vibration damping Since the rising plate portion 531 in the damper portion 53 and the hanging plate portion 542 in the beam connection portion 54 are arranged parallel to each other and facing each other, the rising plate portion 531 and the hanging plate portion 542 face each other in the lateral direction. Furthermore, since one end of the damper body 532 is joined to the side surface of the rising plate portion 531 and the other end is joined to the side surface of the hanging plate portion 542, the damper body 532 can be installed between the rising plate portion 531 and the hanging plate portion 542, which are facing each other in the lateral direction, in the space between the vibration damping device 50 and the beam 3. This makes it possible to secure installation space for the damper body 532 within the limited space between the vibration damping device 50 and the beam 3.

[0010] The invention described in claim 3 is, for example, as shown in Figures 1, 10 to 12, in the vibration damping device 50 described in claim 2, Each of the above Vibration damping The damper section 53 has a pair of the aforementioned rising plate sections 531 and a pair of the aforementioned damper bodies 532. One of the pair of rising plate portions 531 is positioned on one edge along the longitudinal direction of the horizontal portion 52, and the other is positioned on the other edge along the longitudinal direction of the horizontal portion 52. The hanging plate portion 542 in the beam connection portion 54 is disposed between the pair of rising plate portions 531, One of the pair of damper bodies 532 is provided between one of the rising plate portions 531 and the hanging plate portion 542, and the other is provided between the other rising plate portion 531 and the hanging plate portion 542.

[0011] According to the invention described in claim 3, since one of the pair of damper bodies 532 is provided between one of the rising plate portions 531 and the hanging plate portion 542, and the other is provided between the other rising plate portion 531 and the hanging plate portion 542, the damper bodies 532 can be provided on both the one side and the other side of the hanging plate portion 542. For example, the energy absorption performance of the column-beam structure 1 by the vibration control device 50 during an earthquake or a typhoon can be improved.

[0012] The invention described in claim 4 is, for example, as shown in FIGS. 1 to 12, the vibration control device 50 described in any one of claims 1 to 3 is provided in a wooden column-beam structure 1 composed of columns 2 and beams 3, The beam 3 is provided with a horizontally long frame member 30 made of solid wood at least on the lower surface, The beam connection portion 54 in the vibration control device 50 is characterized by being fixed to the frame member 30 in the beam 3 with screws.

[0013] According to the invention described in claim 4, since the beam connection portion 54 in the vibration control device 50 is fixed to the horizontally long frame member 30 made of solid wood on the lower surface side of the beam 3 with screws, the beam connection portion 54 and thus the vibration control device 50 can be easily and surely fixed to the lower surface of the beam 3.

[0014] The invention described in claim 5 is, for example, as shown in FIGS. 1 to 12, A column-beam frame 1, which includes wooden columns 2 and wooden beams 3, is provided within the frame. Installation structure of the vibration control device 50 And, The vibration damping device 50 is A plurality of leg portions 51 are positioned below the beam 3, A long horizontal section 52 is provided, which spans between the upper ends of the multiple leg sections 51 and is arranged parallel to the beam 3. Multiple vibration damping dampers 53 are arranged and fixed in the longitudinal direction of the upper surface of the horizontal section 52, Each of the plurality of vibration damping damper sections 53 is connected to a beam connecting section 54 which is fixed to the lower surface of the beam 3 and is elongated along the length of the horizontal section 52. The main part that contacts the column-beam frame 1 is the beam connecting portion 54, and the plurality of leg portions 51 are not fixed to the column 2. The beam 3 is a wooden assembled beam including, at least on the lower surface thereof, a pair of the frame members 30 arranged at intervals from each other, and an intermediate member 31 spanned and fixed between the pair of frame members 30. A pair of the vibration damping devices 50 are provided in the column-beam structure 1. The beam connection part 54 on one of the pair of vibration damping devices 50 is screwed and fixed to one of the pair of frame members 30 on the beam 3. The beam connection part 54 on the other of the pair of vibration damping devices 50 is screwed and fixed to the other of the pair of frame members 30 on the beam 3, which is a feature.

[0015] According to the invention described in claim 5, Multiple vibration damping damper units 53 can be fixed to the underside of the beam 3 via elongated beam connecting units 54 along the length of the horizontal section 52, which is arranged parallel to the beam 3. Therefore, the energy absorption performance of the column-beam frame 1 by the vibration damping device 50 can be improved by the multiple vibration damping damper units 53. For example, during earthquakes and typhoons, horizontal loads are applied to the column-beam frame 1. However, since the energy absorption performance of the column-beam frame 1 can be improved by the multiple vibration damping damper units 53 in this way, it becomes possible to adequately resist horizontal loads during earthquakes and typhoons, which is advantageous when constructing relatively large wooden buildings. Furthermore, since the beam connection portion 54 of the vibration damping device 50 is fixed with screws to the horizontally elongated frame material 30 made of solid material on the lower side of the beam 3, the beam connection portion 54 and thus the vibration damping device 50 can be easily and reliably fixed to the lower surface of the beam 3. moreover, Since the vibration damping devices 50 can be fixed to the lower surfaces of the respective pair of frame members 30 provided at positions sandwiching the intermediate member 31, even in the column-beam structure 1 configured to include a beam with a width such as the beam 3 which is a wooden assembled beam 3, sufficient vibration damping can be achieved. As a result, the energy absorption performance of the column-beam structure 1 by the vibration damping devices 50 can be improved, so that it can sufficiently resist horizontal loads during an earthquake or a typhoon, which is advantageous for constructing a relatively large-scale wooden building.

Effect of the Invention

[0016] According to the present invention, the energy absorption performance of the column-beam structure in a wooden building can be improved. As a result, it can sufficiently resist horizontal loads during an earthquake or a typhoon, which is advantageous for constructing a relatively large-scale wooden building, so that it can contribute to the realization of a decarbonized society by promoting carbon neutrality and the achievement of the SDGs goals.

Brief Description of the Drawings

[0017] [Figure 1] This is a front view showing a column-beam frame and vibration control device, which are composed of wooden assembled columns and wooden assembled beams. [Figure 2] This is a perspective view showing a wooden assembly column. [Figure 3] This is a front view showing a wooden assembly column. [Figure 4] This is a side view showing a wooden assembly column. [Figure 5] This is a cross-sectional view showing a wooden assembly column. [Figure 6] This is a cross-sectional view showing the joint between the wooden assembly column and the column base connecting hardware. [Figure 7] This is a cross-sectional view showing the joint between the wooden assembly column and the column base connecting hardware. [Figure 8] This is a plan view showing a wooden assembled beam. [Figure 9] This is a cross-sectional view showing a wooden assembled beam. [Figure 10] This is a perspective view showing the vibration damping devices arranged in a row. [Figure 11] This is a cross-sectional view showing the connection between the wooden assembly beam and the vibration damping device. [Figure 12] This is a diagram illustrating the structure of the damper body. [Modes for carrying out the invention]

[0018] Embodiments of the present invention will be described below with reference to the drawings. However, while the embodiments described below are subject to various technically preferred limitations for carrying out the present invention, the technical scope of the present invention is not limited to the following embodiments and illustrated examples. The directions in the following embodiments and illustrated examples are set solely for the convenience of explanation.

[0019] In Figure 1, reference numeral 1 indicates a column-beam frame. This column-beam frame 1 is installed continuously in the horizontal and vertical directions to constitute the frame of a wooden building. Such a column-beam frame 1 is composed of wooden assembled columns 2, wooden assembled beams 3, and column-beam connecting hardware 4 that connects wooden assembled columns 2 arranged vertically, wooden assembled beams 3 arranged horizontally, or wooden assembled columns 2 and wooden assembled beams 3. More specifically, the frame of a wooden building is constructed by joining a column-beam connecting hardware 4 to the upper end of a wooden prefabricated column 2, further joining the wooden prefabricated columns 2 of the upper floor to the upper end surface of the column-beam connecting hardware 4, or further joining the longitudinal end of a wooden prefabricated beam 3 to the side surface of the column-beam connecting hardware 4. The wooden prefabricated columns 2 of the first floor are erected on the foundation 5.

[0020] The column-beam frame structure 1 shown in Figure 1 consists of a pair of assembled wooden columns 2 erected on a foundation 5, with column-beam connecting hardware 4 attached to the upper ends of each of these columns 2, and an assembled wooden beam 3 spanning between the pair of column-beam connecting hardware 4 attached to the upper ends of the pair of assembled wooden columns 2, with the longitudinal ends of the assembled wooden beam 3 attached to each of the column-beam connecting hardware 4. In this type of column-beam frame 1, a vibration damping device 50 is installed within the inner space enclosed by a pair of assembled wooden columns 2 and assembled wooden beams 3, and is positioned in locations other than those that form openings such as windows and doorways.

[0021] [Regarding wooden assembly columns] The wooden assembly column 2 is a rectangular tube with a hollow interior (center side), and as shown in Figures 2 to 7, it comprises four frame members 20, an intermediate member 21, a column base connecting fitting 22, and a column top connecting fitting 23.

[0022] (Frame material) The four frame members 20 are positioned at the four corners of the wooden assembly column 2. Each of these frame members 20 is a long member that forms a square in cross-section perpendicular to the length direction (vertical direction). In this embodiment, structural laminated timber is used for the frame members 20, but solid square timber (column members), LVL (Laminated Veneer Lumber), CLT (Cross Laminated Timber), etc. may also be used. In other words, these frame members 20 are solid members.

[0023] Four connecting bolts 20a are embedded and fixed to the lower end surface of each frame member 20, with their lower ends protruding from the lower end surface of the frame member 20. Similarly, four connecting bolts 20a are embedded and fixed to the upper end surface of each frame member 20, with their upper ends protruding from the upper end surface of the frame member 20. Furthermore, a method called Glued-in-Rod (GIR) is employed for joining the connecting bolts 20a to the frame material 20. In this method, adhesive is filled into the gap between the insertion holes for the connecting bolts 20a formed on the upper and lower end faces of each frame material 20 and the connecting bolts 20a. The hardening of the adhesive transmits stress through the adhesive's bonding force and the connecting bolts 20a, thereby generating joint strength.

[0024] Furthermore, metal reinforcing caps 20b are placed over both ends (upper and lower ends) in the longitudinal direction of each frame material 20 and secured with screws or the like. Holes for connecting bolts 20a are formed in the reinforcing caps 20b.

[0025] (Intermediate member) The intermediate members 21 are provided between the four corner frame members 20 that are adjacent to each other in the left, right, front, and rear directions. That is, they are spanned and fixed between (in the middle of) one adjacent frame member 20 and the other frame member 20. Together with each frame member 20, the intermediate members 21 constitute the four sides of the wooden assembly column 2. Furthermore, the intermediate members 21 are arranged in a stack of two between adjacent frame members 20, and the surface of the intermediate member 21 on the front side is flush with the surface of the adjacent frame member 20. The thickness dimension of the two intermediate members 21 is set to be equal to the width dimension of the side of the frame member 20.

[0026] The intermediate member 21 in this embodiment is made of a so-called wooden panel for construction. In a wooden building panel, vertical and horizontal frame members F are assembled in a rectangular shape, and auxiliary cross members C are assembled vertically and horizontally inside the rectangular frame to form a frame body. Face material B is attached to one or both sides of this frame body, resulting in a hollow internal structure. In this embodiment, face material B is attached to both sides. In addition, the hollow internal portion is usually filled with an insulating material such as glass wool or rock wool (not shown).

[0027] Furthermore, these intermediate members 21, each with different vertical dimensions, are arranged vertically between adjacent frame members 20. In this embodiment, the intermediate members 21 with longer vertical dimensions are located lower, and the intermediate members 21 with shorter vertical dimensions are located upper. Because intermediate members 21 with different vertical dimensions are used in this way, the lengths of the frame members F, auxiliary cross members C, and face members B differ among the intermediate members 21 with different vertical dimensions.

[0028] (Column base connection hardware) The column base connecting hardware 22 is provided at the lower end of the wooden portion of the wooden assembly column 2, which consists of the frame material 20 and the intermediate member 21. It is formed in a rectangular frame shape by four box-shaped connecting hardware 22a arranged spaced apart in the front, back, left, and right directions, and four connecting parts 22b that connect these box-shaped connecting hardware 22a to each other.

[0029] The box-shaped connecting fitting 22a is composed of a cylindrical member 220 formed in the shape of a square tube, and rectangular plate members 221 fixed to the upper and lower ends of the cylindrical member 220 by welding or the like, respectively, so as to close the upper and lower end faces of the cylindrical member 220. A rectangular opening 222 is formed on one side of the cylindrical member 220.

[0030] Furthermore, a through-hole 221a is formed approximately in the center of the lower plate member 221. This through-hole 221a is used to pass anchor bolts (not shown) protruding from the foundation 5, or to pass connecting bolts used when joining to the column-beam connecting hardware 4. Furthermore, if the anchor bolts protruding from the foundation 5 are passed through the through-holes 221a, nuts and washers can be inserted into the cylindrical member 220 through the opening 222, and the column base connecting hardware 22 can be fixed to the foundation 5 by tightening the nuts. The connecting bolts used when joining to the column-beam connecting hardware 4 are also inserted into the cylindrical member 220 through the opening 222, and the connecting bolts are screwed in toward the column-beam connecting hardware 4.

[0031] Furthermore, through holes 221b are formed in each of the four corners of the upper plate member 221. Connecting bolts 20a protruding from the frame material 20 are passed through these four corner through holes 221b. The frame material 20 can be fixed to the column base connecting hardware 22 by tightening nuts (washers) inserted into the cylindrical member 220 through the opening 222 on the connecting bolts 20a that pass through the through holes 221b at the four corners.

[0032] These box-shaped connecting fittings 22a are arranged spaced apart in the front, back, left, and right directions, with their respective openings 222 facing outwards (front and rear), and adjacent box-shaped connecting fittings 22a are connected by connecting parts 22b.

[0033] The connecting section 22b is formed by connecting two channel steel sections, each consisting of a web Wb and upper and lower flanges Fg, with the webs Wb joined together. The upper flange Fg is set to be longer in the depth direction (the direction from the surface side to the center side of the wooden assembly column 2) than the lower flange Fg. The upper flange Fg is in contact with the lower surface of the intermediate member 21. It is then screwed toward the lower end surface (frame material F) of the thickness-adjusting wooden panel 21c and the lower end surface (frame material F) of the third intermediate member 21d. Furthermore, the web Wb has multiple through-holes formed in it to reduce weight.

[0034] The surface of the column base connecting hardware 22 (the outer surface of the connecting box-shaped hardware 22a and the outer end of the upper flange Fg in the connecting portion 22b) and the surface of each frame material 20 are substantially flush. Furthermore, the box-shaped connecting fitting 22a in the column base connecting fitting 22 is in contact with the reinforcing cap 20b provided at the lower end of each frame member 20.

[0035] (Column head connection hardware) The column head joint fitting 23 is formed by inverting the column base joint fitting 22 described above, and, like the column base joint fitting 22, it comprises a box-shaped joining fitting 23a and a connecting portion 23b. The box-shaped metal fitting 23a for joining is composed of a cylindrical member 230 and upper and lower plate members 231, with an opening 232 formed in the cylindrical member 230. Furthermore, a through-hole 231a is formed approximately in the center of the upper plate member 231 through which a connecting bolt, which is screwed into the lower end face of the column-beam connecting hardware 4, passes, and through-holes (not shown) are formed at the four corners of the lower plate member 231 through which connecting bolts 20a protruding from the upper end face of the frame material 20 pass. In the connecting section 23b, the lower flange Fg is set to be longer in the depth direction (along the direction from the surface side to the center side of the wooden assembly column 2) than the upper flange Fg. In addition, multiple through holes are formed in the web Wb to reduce weight. Furthermore, the surface of the column head connecting hardware 23 (the outer surface of the connecting box-shaped hardware 23a, and the outer end of the lower flange Fg in the connecting portion 23b) and the surface of each frame member 20 are substantially flush. Furthermore, the box-shaped connecting fitting 23a in the column head connecting fitting 23 contacts the reinforcing cap 20b provided at the lower end of each frame member 20.

[0036] [Regarding wooden frame beams] The wooden assembly beam 3, like the wooden assembly column 2, is a rectangular tube with a hollow interior (center side), and as shown in Figures 1, 8, and 9, it comprises four frame members 30, an intermediate member 31, and beam end connecting hardware 32.

[0037] (Frame material) The four frame members 30 are positioned at the four corners of the wooden assembly beam 3. Each of these frame members 30 is a long member that forms a square in cross-section perpendicular to the length direction (vertical direction). In this embodiment, structural laminated timber is used for the frame members 30, but solid timber (columns), LVL, CLT, etc. may also be used. In other words, these frame members 30 are solid members. Four connecting bolts 30a are embedded and fixed to both ends of each frame material 30 in the longitudinal direction, with their protruding ends extending from both ends of the frame material 30. Furthermore, the glue-in rod method is employed for joining the connecting bolt 30a to the frame material 30. Furthermore, metal reinforcing caps 30b are placed over both ends (upper and lower ends) in the longitudinal direction of each frame material 30 and secured with screws or the like. Holes for connecting bolts 30a are formed in the reinforcing caps 30b.

[0038] (Intermediate member) The intermediate members 31 are provided between the four corner frame members 30 that are adjacent to each other vertically and horizontally. That is, they are spanned and fixed between one adjacent frame member 30 and the other frame member 30 (in the middle). Together with each frame member 20, the intermediate members 31 constitute the four sides of the wooden assembly column 2. The intermediate member 31 in this embodiment is made of a wooden panel for construction, similar to the intermediate member 21 in the wooden assembly column 2. In this embodiment, components of equal length in the left-right direction are arranged side by side between adjacent frame members 30. Furthermore, the intermediate members 31 are arranged in a stack of two between adjacent frame members 30, and the surface of the intermediate member 31 on the front side is flush with the surface of the adjacent frame member 30. The thickness dimension of the two intermediate members 31 is set to be equal to the width dimension of the side of the frame member 30.

[0039] (Beam end connection hardware) The beam end joint fitting 32 is provided at both ends in the longitudinal direction of the wooden portion of the wooden assembly beam 3, which consists of the frame material 30 and the intermediate member 31. It is formed in a rectangular frame shape by four box-shaped joining fittings 32a arranged spaced apart in the front, back, top, and bottom, and four connecting parts 32b that connect these box-shaped joining fittings 32a to each other. Its detailed configuration is substantially the same as that of the column base joint fitting 22 described above, so a description is omitted. The surface of the beam end connecting hardware 32 (the outer surface of the connecting box-shaped hardware 32a, and the outer end of the upper flange Fg in the connecting portion 32b) and the surface of each frame member 30 are substantially flush. Furthermore, the box-shaped connecting fitting 32a in the beam end connecting fitting 32 contacts the reinforcing caps 30b provided at both ends in the longitudinal direction of each frame member 30.

[0040] [Regarding column-beam connecting hardware] The column-beam connecting hardware 4, also referred to as a joint, is a roughly rectangular parallelepiped-shaped piece of hardware positioned at the intersection of the extensions of the wooden assembled column 2 and the wooden assembled beam 3, as shown in Figure 1. Like the wooden assembled column 2, it is hollow inside. In other words, the column-beam connecting hardware 4 is formed in a square tubular shape.

[0041] The column-beam connecting hardware 4 has rectangular parallelepiped receiving blocks 40 at each of its eight corners. The receiving blocks 40 that are spaced apart vertically are connected by rectangular cylindrical vertical members 41, and the receiving blocks 40 that are spaced apart horizontally and horizontally are connected by rectangular cylindrical horizontal members 42. In addition, a roughly rectangular plate 43 is provided between adjacent vertical members 41, and the vertical edges of this plate 43 are joined to the vertical members 41, and the horizontal edges are joined to the horizontal members 42.

[0042] Screw holes 40a are formed in the upper surface and the two outward-facing side surfaces of the four upper receiving blocks 40, and screw holes 40a are also formed in the lower surface and the two outward-facing side surfaces of the four lower receiving blocks 40. The receiving blocks 40, each provided at one of the eight corners, are in contact with the column head connecting hardware 23 of the wooden assembly column 2, which is provided on the lower surface of the column-beam connecting hardware 4; the column base connecting hardware 22 of the wooden assembly column 2, which is provided on the upper surface; and the beam end connecting hardware 32 of the wooden assembly beam 3, which is provided on the side. The connecting bolts are then screwed in from each connecting hardware side to secure them.

[0043] [Regarding vibration damping devices] Next, I will explain the vibration damping device 50. The vibration damping device 50, located in the inner space enclosed by a pair of wooden assembled columns 2 and wooden assembled beams 3 within the column-beam frame 1, consists of multiple leg sections 51, horizontal sections 52, and multiple legs, as shown in Figures 1, 10 to 12. Vibration damping It includes a damper section 53 and a beam connecting section 54. Furthermore, the vibration damping device 50 of this embodiment is made of metal (for example, steel) as a whole, except for the vibration damping member 532a which will be described later.

[0044] Furthermore, in this embodiment, the two vibration damping devices 50 are arranged with a gap between them in the front-to-back direction. In other words, multiple vibration damping devices 50 are used to dampen the vibrations of the column-beam frame 1. These two vibration damping devices 50 are each positioned directly below a pair of frame members 30 on the lower surface of the wooden assembly beam 3.

[0045] (Multiple legs) First, the multiple legs 51 consist of two legs in this embodiment, and are arranged below the wooden assembly beam 3 so as to form a V-shape when viewed from the front, with the spacing between them gradually widening downwards. Each leg 51 comprises a screen body 511, a base plate 512, and an upper end plate 513.

[0046] The rigging body 511 is made of H-shaped steel consisting of a web and two flanges, with its lower and upper ends cut at an angle. This allows multiple legs 51 to be arranged in a V-shape when viewed from the front.

[0047] The base plate 512 is a rectangular plate material and is joined to the lower end surface of the slat body 511 by welding or the like. A gusset plate 512a is joined between the base plate 512 and the flange portion at the lower end of the slat body 511 to reinforce the joint strength. This base plate 512 has multiple bolt holes formed in positions that avoid the lower end of the slat body 511. This allows it to be bolted to the foundation 5 or the floor of the upper floor.

[0048] The upper plate 513 is a rectangular plate material and is joined to the upper surface of the screen body 511 by welding or the like. The upper end plate 513 has multiple bolt holes formed in it, positioned to avoid the upper end of the main body 511. The horizontal section 52 is placed on the upper surface of the upper end plate 513, and the horizontal section 52 is bolted to the upper end plate 513.

[0049] (Horizontal section) The horizontal section 52 is made of a long H-shaped steel beam consisting of a web and two upper and lower flanges, and is positioned parallel to the timber assembly beam 3. The lower flange is bolted to the upper end plates 513 of the multiple leg sections 51. In other words, the horizontal section 52 spans between the upper ends of the multiple leg sections 51. Furthermore, the length of the horizontal section 52 is shorter than the length of the underside of the wooden assembly beam 3.

[0050] Multiple stiffeners 521 are joined to the horizontal section 52 at intervals along its length in a recess surrounded by the web and the upper and lower flanges. This improves the rigidity of the horizontal section 52. Multiple Stifner 521s like these, Vibration damping They are arranged to correspond to the position of the gap between the damper parts 53. That is, multiple Vibration damping The stiffeners 521 are positioned below the gap between the damper sections 53. In other words, the horizontal section 52 is supported by these multiple stiffeners 521. Vibration damping The damper section 53 is reinforced at each mounting position.

[0051] (multiple Vibration damping (Damper section) multiple Vibration damping The damper sections 53 are arranged and fixed in the longitudinal direction of the upper surface (upper surface of the upper flange) of the horizontal section 52. Vibration damping The damper sections 53 are arranged at intervals along the length of the upper surface of the horizontal section 52. Such multiple Vibration damping Each of the damper sections 53 has a rising plate section 531 and a damper body 532.

[0052] The rising plate portion 531 is a plate-shaped member fixed to the upper surface of the horizontal frame portion 52 and projecting toward the beam connection portion 54. That is, the rising plate portion 531 consists of a fixed plate portion fixed to the upper surface of the horizontal frame portion 52 and a projecting plate portion projecting upward from the fixed plate portion, and in this embodiment it is formed in an L-shape in cross-section. The cross-sectional shape is not limited to this, and for example it may be an inverted T-shape in cross-section, or any other shape. Multiple bolt holes are formed in the fixing plate section. This allows it to be bolted to the upper surface (upper flange) of the horizontal section 52. Furthermore, multiple bolt holes for fixing the damper body 532 are formed at both ends of the protruding plate portion.

[0053] In this embodiment, the rising plate portion 531 is provided in pairs. That is, in this embodiment, each Vibration damping The damper section 53 has a pair of rising plate sections 531. One of these rising plate sections 531 is positioned on one edge along the longitudinal direction of the upper surface of the horizontal section 52, and the other is positioned on the other edge along the longitudinal direction of the upper surface of the horizontal section 52. In this embodiment, the rising plate portion 531 is provided in pairs, but it may be provided on only one side. In that case, it may be placed on either the one-sided edge or the other-sided edge along the length direction of the upper surface of the horizontal frame portion 52, or it may be placed in the center of the upper surface of the horizontal frame portion 52.

[0054] The damper body 532 comprises a vibration damping member 532a that functions as a vibration damping means, and a pair of support plates 532b to which one end of the vibration damping member 532a and the other end are respectively fixed.

[0055] For example, the vibration damping member 532a is A component that absorbs energy through plastic deformation. It is used and functions as a vibration damping means. Both ends of this vibration damping member 532a are fixed to a pair of support plates 532b with an adhesive or the like. The above energy-absorbing component As shown in Figure 12(c), it is formed in a rectangular shape. In this embodiment, the vibration damping member 532a has an intermediate plate 532c arranged parallel to a pair of support plates 532b, but this intermediate plate 532c is not necessarily required.

[0056] The pair of support plates 532b are formed in a rectangular plate shape and are used so as to face each other. Multiple bolt holes are formed at both ends in the longitudinal direction of each support plate 532b. The multiple bolt holes in one support plate 532b correspond to the multiple bolt holes formed at both ends of the protruding plate portion of the rising plate portion 531. The multiple bolt holes in the other support plate 532b correspond to the multiple bolt holes formed in the hanging plate portion 542, which will be described later. Therefore, one of the pair of support plates 532b is bolted to the protruding plate portion of the rising plate portion 531, and the other is bolted to the hanging plate portion 542 of the beam connecting portion 54.

[0057] When the vibration damping member 532a has an intermediate plate 532c, the intermediate plate 532c is positioned in the center between a pair of support plates 532b. That is, on both one side and the other side of the intermediate plate 532c, The above energy-absorbing component It is in a fixed state. In other words, The above energy-absorbing component Two of these will be used. And one of the support plates 532b will be attached to the other. componentThe end of is fixed, and the other support plate 532b is fixed to the other component The end is fixed. By providing the intermediate plate 532c in this way, Energy-absorbing material However, this differs from the case where the intermediate plate 532c is not provided. Move Therefore, depending on the size of the wooden building, for example, the presence or absence of the intermediate plate 532c can be selected. On the other hand, if the vibration damping member 532a does not have an intermediate plate 532c, then the vibration damping member 532 house It is positioned between a pair of support plates 532b, with one end fixed to one support plate 532b and the other end fixed to the other support plate 532b.

[0058] In this embodiment, the damper bodies 532 are provided in pairs. That is, in this embodiment, each Vibration damping The damper section 53 has a pair of damper bodies 532. One of the pair of damper bodies 532 is provided between one of the pair of rising plate sections 531 and the hanging plate section 542, which will be described later. The other of the pair of damper bodies 532 is provided between the other of the pair of rising plate sections 531 and the hanging plate section 542, which will be described later. In this embodiment, a pair of damper bodies 532 are provided, but if the rising plate portion 531 is provided on only one side, then the damper body 532 may also be provided on only one side. In other words, one damper body 532 may be provided between the rising plate portion 531 on one side and the hanging plate portion 542, which will be described later.

[0059] (Beam connection part) The beam connection section 54 is elongated along the length direction of the horizontal section 52 (i.e., the length direction of the timber assembly beam 3), and multiple Vibration damping Each of the damper sections 53 is connected to it and fixed to the underside of the wooden assembly beam 3. Such a beam connection portion 54 has a fixing plate portion 541 fixed to the lower surface of the wooden assembly beam 3 and a hanging plate portion 542 that hangs down from the fixing plate portion 541 toward the horizontal portion 52, and in this embodiment it is formed in a T-shape in cross-section. The cross-sectional shape is not limited to this, and for example it may be L-shaped in cross-section or other shapes.

[0060] The fixing plate portion 541 has multiple screw holes and is fixed to the lower surface of the wooden assembly beam 3 with screws. The fixing plate portion 541 is fixed to the lower surface of the frame material 30 located at the corner of the wooden assembly beam 3. In other words, the beam connection portion 54 is screw-fixed to the frame material 30, which is a solid material, rather than to the hollow intermediate member 31.

[0061] The hanging plate portion 542 hangs down from the center of the fixing plate portion 541 in the width direction (front-to-back direction) toward the horizontal frame portion 52. The hanging length of this hanging plate portion 542 is such that the lower end does not reach the upper surface of the horizontal frame portion 52, and each Vibration damping The damper portion 53 is set to be opposite the rising plate portion 531. That is, each Vibration damping The rising plate portion 531 and the hanging plate portion 542 in the damper portion 53 are arranged parallel to each other and facing each other. The hanging plate portion 542 has multiple bolt through holes that correspond to the multiple bolt through holes formed in the support plate 532b of the damper body 532, allowing the damper body 532 to be fixed in place with bolts.

[0062] In this embodiment, each Vibration dampingThe damper section 53 has a pair of support plates 532b and a pair of damper bodies 532, and both damper bodies 532 are bolted to a single hanging plate section 542. Therefore, the support plates 532b on the hanging plate section 542 side of the pair of damper bodies 532 are positioned to sandwich the hanging plate section 542 and are fixed to the hanging plate section 542 by common bolts and nuts. However, this is not the case when the rising plate section 531 is provided on only one side, in which case the damper body 532 is also provided on only one side.

[0063] (Operation of vibration damping device) When deformation occurs in the column-beam frame 1 (the frame of a wooden building equipped with the column-beam frame 1), which is composed of wooden assembled columns 2 and wooden assembled beams 3, due to lateral vibrations such as earthquakes, the wooden assembled beams 3 and the column-beam connecting hardware 4 will be displaced horizontally. Consequently, the wooden assembled columns 2 will be displaced to tilt diagonally, and the column-beam frame 1, including the foundation 5, will be deformed into a roughly parallelogram shape. At this time, the wooden assembly beam 3 will be displaced in the left-right direction, and the beam connection part 54 will also be displaced in the left-right direction simultaneously. On the other hand, all parts of the vibration damping device 50 except the beam connection part 54 will attempt to displace in the same direction as the foundation 5. In other words, the beam connection part 54 and the other parts of the vibration damping device 50 will displace in opposite directions. Then, when the beam connection part 54 and the other parts are displaced in opposite directions, Vibration damping A vibration damping member 532a, provided between the rising plate portion 531 of the damper portion 53 and the hanging plate portion 542 of the beam connecting portion 54, deforms to exert a damping force. The vibration damping device 50 has such a vibration damping function. Vibration damping Since it has multiple damper sections 53, these multiple Vibration damping The damper section 53 improves the energy absorption performance of the column-beam frame 1 by the vibration damping device 50.

[0064] This embodiment provides the following excellent effects. In other words, via elongated beam connecting sections 54 along the length direction of the horizontal section 52 which is arranged parallel to the beam 3, Vibration dampingSince the damper section 53 can be fixed to the lower surface of the beam 3, multiple Vibration damping The damper section 53 improves the energy absorption performance of the column-beam frame 1 by the vibration damping device 50. For example, during earthquakes and typhoons, horizontal loads are applied to the column-beam frame 1, but in this way multiple Vibration damping The damper section 53 improves the energy absorption performance of the column-beam frame 1, allowing it to adequately resist horizontal loads during earthquakes and typhoons, which is advantageous when constructing relatively large wooden buildings.

[0065] Also, each Vibration damping Since the rising plate portion 531 in the damper portion 53 and the hanging plate portion 542 in the beam connection portion 54 are arranged parallel to each other and facing each other, the rising plate portion 531 and the hanging plate portion 542 face each other in the lateral direction. Furthermore, since one end of the damper body 532 is joined to the side surface of the rising plate portion 531 and the other end is joined to the side surface of the hanging plate portion 542, the damper body 532 can be installed between the rising plate portion 531 and the hanging plate portion 542, which are facing each other in the lateral direction, in the space between the vibration damping device 50 and the beam 3. This makes it possible to secure installation space for the damper body 532 within the limited space between the vibration damping device 50 and the beam 3.

[0066] Furthermore, since one of the pair of damper bodies 532 is provided between one rising plate portion 531 and the hanging plate portion 542, and the other is provided between the other rising plate portion 531 and the hanging plate portion 542, damper bodies 532 can be provided on both sides of the hanging plate portion 542, thereby improving the energy absorption performance of the column-beam frame 1 by the vibration control device 50 during earthquakes or typhoons, for example.

[0067] Furthermore, since the beam connection portion 54 of the vibration damping device 50 is fixed with screws to the horizontally elongated frame material 30 made of solid material on the lower side of the beam 3, the beam connection portion 54 and thus the vibration damping device 50 can be easily and reliably fixed to the lower surface of the beam 3.

[0068] Furthermore, since the vibration damping device 50 can be fixed to the lower surface of each of the pair of frame members 30 that are positioned to sandwich the intermediate member 31, vibration damping can be sufficiently achieved even in a column-beam frame structure 1 that includes a wide beam such as the beam 3 which is a wooden assembly beam 3. As a result, the energy absorption performance of the column-beam frame structure 1 can be improved by the vibration damping device 50, so that it can adequately resist horizontal loads during earthquakes and typhoons, which is advantageous when constructing relatively large wooden buildings.

[0069] [Variation] The embodiments to which the present invention can be applied are not limited to those described above, and can be modified as appropriate without departing from the spirit of the invention. Modifications are described below. The following modifications may be combined as much as possible. Furthermore, in each of the following modifications, elements common to the above-described embodiments are denoted by the same reference numerals, and their descriptions are omitted or simplified.

[0070] [Variation 1] In the above embodiment, the wooden columns 2 and beams 3 are formed in a rectangular tubular shape, comprising frame members 20, 30 at the four corners and intermediate members 21, 31 provided between adjacent frame members 20, 30, but are not limited to this. The wooden column 2 may be a wall-like column formed with a width relative to its thickness, comprising a pair of left and right frame members 20 and an intermediate member 21 provided between these frame members 20, or it may be composed of a solid member (solid timber, LVL, CLT, etc.). The wooden beam 3 may be a large beam comprising a pair of upper and lower frame members 30 and an intermediate member 31 provided between these frame members 30, or it may be made entirely of solid material (solid timber, LVL, CLT, etc.). The vibration damping device 50 is fixed to at least the lower surface (solid material) of the wooden beam 3.

[0071] [Variation 2] In the above embodiment, the two vibration damping devices 50 are arranged with an interval between them in the front-rear direction. However, the number of vibration damping devices 50 used is not particularly limited; there may be one or two or more. Furthermore, the vibration damping device 50 may not only be placed parallel to the wooden beam 3 directly below the same column-beam frame 1, but may also be placed directly below each of multiple parallel column-beam frames 1, or directly below each of multiple orthogonal column-beam frames 1. In other words, when placing vibration damping devices 50 directly below the wooden beams 3 in some of the column-beam frames 1 in a single wooden building, one vibration damping device 50 may be placed directly below the wooden beam 3 in one column-beam frame 1, multiple vibration damping devices 50 may be placed parallel to the wooden beam 3 in one column-beam frame 1, one (or more) may be placed directly below the wooden beam 3 in multiple parallel column-beam frames 1, or one (or more) may be placed directly below the wooden beam 3 in multiple orthogonal column-beam frames 1. [Explanation of symbols]

[0072] 1 Column beam frame 2 Wooden assembled pillars 3 Wooden assembled beam 4. Column-beam connecting hardware 5 Basics 20 Frame materials 21 Intermediate member 22 Column base connecting hardware 23. Column head connection hardware 30 Frame materials 31 Intermediate member 32 Beam end connection hardware 50 Vibration damping device 51 Legs 52 Horizontal section 53 Vibration damping damper section 531 Rising plate section 532 Damper body 532a Vibration damping member 532b Support plate 54 Beam connection part 541 Fixed plate part 542 Lower plate section

Claims

1. A vibration damping device installed within a column-beam frame structure comprising wooden columns and wooden beams, Multiple legs positioned below the beam, A long horizontal section is provided, which is stretched between the upper ends of the multiple leg sections and is arranged parallel to the beam, Multiple vibration damping dampers are arranged and fixed in the longitudinal direction of the upper surface of the horizontal section, Each of the aforementioned plurality of vibration damping damper sections is connected to and fixed to the lower surface of the beam, and includes a beam connecting section that is elongated along the length direction of the horizontal section, The main part that contacts the column-beam frame is the beam connection part, and the plurality of legs are not fixed to the column. The aforementioned horizontal section has a web, upper and lower flanges, and a recess surrounded by the web and the upper and lower flanges. A vibration damping device characterized in that a plurality of stiffeners, which are arranged in accordance with the positions of the gaps between the plurality of vibration damping damper portions and which reinforce the horizontal portion, are joined to the recess.

2. In the vibration damping device according to claim 1, Each of the vibration damping damper sections comprises a rising plate section fixed to the upper surface of the horizontal section and projecting toward the beam connection section, and a damper body with one end joined to the side surface of the rising plate section. The beam connection portion has a fixing plate portion fixed to the lower surface of the beam and a hanging plate portion that hangs down from the fixing plate portion toward the horizontal portion. The rising plate portion in each of the vibration damping damper sections and the hanging plate portion in the beam connection section are arranged parallel and opposite to each other. A vibration damping device characterized in that the other end of the damper body is joined to the side surface of the hanging plate portion.

3. In the vibration damping device according to claim 2, Each of the aforementioned vibration damping damper sections comprises a pair of the aforementioned rising plate sections and a pair of the aforementioned damper bodies. One of the pair of rising plate sections is positioned on one side edge along the longitudinal direction of the horizontal section, and the other is positioned on the other side edge along the longitudinal direction of the horizontal section. The hanging plate portion in the beam connection portion is positioned between the pair of rising plate portions. A vibration damping device characterized in that one of the pair of damper bodies is provided between the rising plate portion and the hanging plate portion of one of them, and the other is provided between the rising plate portion and the hanging plate portion of the other.

4. A vibration damping device according to any one of claims 1 to 3 is installed in a wooden column-beam frame composed of columns and beams, The beam is provided with a horizontally elongated frame member made of solid material on at least its lower surface. The installation structure for the vibration damping device is characterized in that the beam connection portion of the vibration damping device is fixed with screws to the frame material of the beam.

5. An installation structure for a vibration damping device provided within a column-beam frame comprising wooden columns and wooden beams, The vibration damping device, Multiple legs positioned below the beam, A long horizontal section is provided, which is stretched between the upper ends of the multiple leg sections and is arranged parallel to the beam, Multiple vibration damping dampers are arranged and fixed in the longitudinal direction of the upper surface of the horizontal section, Each of the aforementioned plurality of vibration damping damper sections is connected to and fixed to the lower surface of the beam, and includes a beam connecting section that is elongated along the length direction of the horizontal section, The main part that contacts the column-beam frame is the beam connection part, and the plurality of legs are not fixed to the column. The beam is a wooden assembly beam comprising, at least on its lower surface, a pair of horizontally elongated frame members made of solid material, spaced apart from each other, and an intermediate member that spans and is fixed between the pair of frame members. A pair of vibration damping devices are provided within the column-beam frame, The beam connection portion of one of the pair of vibration damping devices is screw-fixed to one of the pair of frame members in the beam. The installation structure for a vibration damping device is characterized in that the beam connection portion of the other of the pair of vibration damping devices is screw-fixed to the other of the pair of frame members in the beam.

Images