Reinforced vibration-damping surface grating

Abstract

To provide a vibration control reinforcing surface lattice for improving an aseismatic reinforcing effect.SOLUTION: The vibration control reinforcing surface lattice has an inner frame 4 formed of two vertical frames and two horizontal frames. The inner frame 4 is provided in a rectangular space surrounded by structural members of a building. The plurality of vertical grids 5 are provided between the two horizontal frames of the inner frame 4. The plurality of horizontal grids 6 are provided between the two vertical frames of the inner frame 4 in a direction orthogonal to the vertical grids 5. A plurality of lattice parts are formed in the surface lattice damping wall. The vibration-damping member 7 is provided crosswise on at least one diagonal line of the plurality of lattice parts.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vibration-damping reinforced grille. [Background technology]

[0002] In the seismic reinforcement of traditional wooden buildings such as historical structures, existing bearing walls and vibration-damping walls completely isolate the interior of the building, creating a feeling of claustrophobia and oppression in the space. Patent documents 1 to 4 have been known for some time, but all of these construction methods involve walls that completely isolate the interior of the building.

[0003] On the other hand, lattice walls, which have been used since ancient times, do not completely block off the interior of a room, so they reduce the feeling of claustrophobia and oppression, and are also load-bearing walls that are excellent in terms of ventilation and lighting. Examples of lattice walls are disclosed in Patent Document 5 and Non-Patent Document 1. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-32776 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-80802 [Patent Document 3] Japanese Patent Application Laid-Open No. 2005-113676 [Patent Document 4] Japanese Patent Application Laid-Open No. 2001-55841 [Patent Document 5] Japanese Patent Application Laid-Open No. 2012-17647 [Non-patent literature]

[0005] [Non-Patent Document 1] "Mokusoken Load-bearing Lattice Wall," [online], retrieved June 5, 2024, Mokusoken General Incorporated Association, Mokuso Research and Development Building Materials,<URL:http: / / www.iceice.com / mokusouken / images / product%20part / product_p6.pdf> Summary of the Invention [Problem to be solved by the invention]

[0006] However, the wall coefficient of lattice walls specified in the Building Standards Act is a relatively low value of 0.6 to 1.0, and their effectiveness as earthquake-resistant reinforcement walls is small.

[0007] For the reasons stated above, it is necessary to provide a vibration-damping reinforcement surface grille that has improved seismic reinforcement effects. [Means for solving the problem]

[0008] The present invention was devised in view of the above-mentioned problems of the prior art, and one aspect of the present invention is a vibration-damping reinforced surface grille that is provided in a rectangular space surrounded by the structural materials of a building, and that comprises an inner frame formed of two vertical frames and two horizontal frames, a plurality of vertical lattices provided between the two horizontal frames of the inner frame, and a plurality of horizontal lattices provided between the two vertical frames of the inner frame in a direction perpendicular to the vertical lattices, and that is characterized in that a vibration-damping member is provided in a cross-shaped manner on the diagonal of at least one of the plurality of lattice portions.

[0009] In one aspect, the inner frame is formed by a beam, two horizontal frames parallel to the foundation, and two vertical frames parallel to the two pillars, and is arranged in the vertical direction.

[0010] In one aspect, the inner frame is formed by two vertical frames parallel to the beams and two horizontal frames parallel to the girders, and is arranged horizontally.

[0011] In one aspect, the joints where the vertical lattice and the horizontal lattice intersect are joined by half-joints, and vibration-damping rubber is provided at the joints of the vertical lattice and the horizontal lattice.

[0012] In one aspect, the vibration-damping members provided from the upper right to the lower left of the lattice portion are arranged on one side of the vibration-damping reinforcement surface lattice, and the vibration-damping members provided from the upper left to the lower right of the lattice portion are arranged on the other side of the vibration-damping reinforcement surface lattice.

[0013] In one embodiment, a first bolt penetrates the vibration-damping reinforcement surface grille in the thickness direction at the joint where the vertical grille or the inner frame intersects with the horizontal grille or the inner frame, and the vibration-damping member comprises a tape-shaped elastic body and D-rings provided on both ends of the elastic body, and the vibration-damping member is attached to the vibration-damping reinforcement surface grille with the first bolt inserted through the D-ring.

[0014] In one embodiment, a first bolt penetrates the thickness direction of the vibration-damping reinforcement surface grille at the joint where the vertical grille or the inner frame and the horizontal grille or the inner frame intersect, and the vibration-damping member comprises a tape-shaped elastic body having a first through hole formed therein, a steel plate attached to one of the surfaces of both ends of the elastic body and having a first through hole and a second through hole formed therein, a square seat attached to the other surface of both ends of the elastic body and having a first through hole formed therein, and a second bolt inserted into the first through hole of the steel plate, the first through hole of the elastic body, and the first through hole of the square seat and tightened with a nut, so that both ends of the elastic body are sandwiched between the steel plate and the square seat, and the vibration-damping member is attached to the vibration-damping reinforcement surface grille with the first bolt inserted into the second through hole of the steel plate.

[0015] In one embodiment, at least one of the plurality of lattice portions is covered with a rubber sheet. [Effects of the Invention]

[0016] According to the present invention, it is possible to provide a vibration-damping reinforcement surface grille with improved seismic reinforcement effects. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a front view showing a vibration-damping reinforcement surface grille according to a first embodiment. [Figure 2] FIG. 10 is a diagram showing a vibration-damping reinforcement surface grille before the vibration-damping member is installed. [Figure 3] Schematic diagram showing the junction of vertical and horizontal lattices. [Figure 4] 1A and 1B are views showing a vibration-damping member according to a first embodiment. [Figure 5] FIG. 2 is a side view showing the vibration-damping reinforcement surface grating of the first embodiment. [Figure 6] 10A and 10B are diagrams showing other examples of the number and arrangement of lattice portions where vibration-damping members are provided. [Figure 7] Schematic diagram of the loading of a wall element test specimen with a vibration-damping reinforced surface grid. [Figure 8] Schematic diagram of each test specimen. [Figure 9] FIG. 10 shows the experimental results of a vibration-damping reinforcement surface grille. [Figure 10] FIG. 10 shows the experimental results of a vibration-damping reinforcement surface grille. [Figure 11] FIG. 10 is a view showing a vibration damping member according to a second embodiment. [Figure 12] FIG. 10 is a view showing a vibration-damping reinforcement surface grating according to a third embodiment. [Figure 13] FIG. 10 is a front view showing a vibration-damping reinforcement surface grille according to a fourth embodiment. [Figure 14] FIG. 10 is a cross-sectional view showing a vibration-damping reinforcement surface grating according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, first to third embodiments of the vibration-damping reinforcement surface grating of the present invention will be described in detail with reference to FIGS.

[0019] [Embodiment 1] It has been revealed that the behavior of lattice walls during earthquakes is that, although their maximum strength is low, they are shear walls with extremely high deformation capacity, and even when the story drift angle exceeds 1 / 15 rad, they simply undergo plastic deformation without significant destruction. Therefore, in this first embodiment, damping performance is added to lattice walls, which are shear walls with extremely high deformation capacity.

[0020] Fig. 1 is a front view showing the vibration-damping reinforced surface grille in this embodiment 1, and Fig. 2 shows the vibration-damping reinforced surface grille before the vibration-damping members are installed. Fig. 2(a) is a front view of the vibration-damping reinforced surface grille, Fig. 2(b) is a cross-sectional view taken along line AA in Fig. 2(a), and Fig. 2(c) is a cross-sectional view taken along line BB in Fig. 2(a). In this embodiment 1, the vibration-damping reinforced surface grille is used as a vibration-damping wall.

[0021] As shown in Figures 1 and 2, reference numeral 1 denotes a beam installed above, and reference numeral 2 denotes a base installed below. Two columns 3 are installed between the beam 1 and the base 2, and in a direction perpendicular to the beam 1 and the base 2. The two columns 3 are joined to the beam 1 and the base 2 with short tenons.

[0022] The vibration-damping reinforcement surface grille of the first embodiment is installed in a rectangular vertical space surrounded by structural materials of the building, such as the beam 1, foundation 2, and two columns 3. In consideration of earthquake-resistant reinforcement of cultural heritage buildings and minimizing damage to the existing wood, an inner frame 4 of the same dimensions as the grille materials (vertical grilles 5 and horizontal grilles 6, described below) is installed inside the rectangular space surrounded by the beam 1, foundation 2, and two columns 3. The inner frame 4 is formed by horizontal frames parallel to the beam 1, horizontal frames parallel to the foundation 2, and vertical frames parallel to the two columns 3. In other words, the inner diameter of the area surrounded by the beam 1, foundation 2, and two columns 3 is the same as the outer diameter of the inner frame 4, and the inner frame 4 fits into the rectangular space surrounded by the beam 1, foundation 2, and two columns 3.

[0023] Beam 1, sill 2, two columns 3 and inner frame 4 should be joined with nails if possible. If it is not possible to drive nails into beam 1, sill 2 and columns 3, plates that protrude in the direction of beam 1 should be provided on both sides of the thickness direction of the upper frame of inner frame 4. Plates should also be provided on the lower frame and horizontal frames of inner frame 4. This will prevent inner frame 4 from shifting in the thickness direction and coming off beam 1, sill 2 and columns 3.

[0024] A plurality of vertical lattices 5 are provided between the two horizontal frames of the inner frame 4. A plurality of horizontal lattices 6 are provided between the two vertical frames of the inner frame 4. The vertical lattices 5 and horizontal lattices 6 are perpendicular to each other. As shown in Figures 1 and 2, the vibration-damping reinforced surface lattice is formed with a plurality of lattice sections. The vertical lattices 5 and horizontal lattices 6 are joined to the inner frame 4 with mortise and tenon joints. The joints (engagement sections) where the vertical lattices 5 and horizontal lattices 6 intersect are half-joint joints. Figure 3 is a schematic diagram of the joints between the vertical lattices 5 and horizontal lattices 6. As shown in Figure 3, vibration-damping rubber (e.g., butyl rubber) 8 is provided at the bottom of the joints of the vertical lattices 5 and the bottom of the joints of the horizontal lattices 6.

[0025] As shown in Figure 1, vibration-damping members 7 are provided in at least one of the lattice sections formed by the inner frame 4, vertical lattice 5, and horizontal lattice 6. The vibration-damping members 7 are formed in the shape of tapes and are provided in a brace-like shape (diagonal) from the upper left to the lower right of the lattice section, and in a brace-like shape (diagonal) from the upper right to the lower left of the lattice section. In other words, the vibration-damping members 7 are arranged in a cross-like shape on the diagonal of the lattice section.

[0026] Fig. 4(a) is a plan view showing the vibration-damping member 7 in this embodiment 1, and Fig. 4(b) is a side view. The vibration-damping member 7 includes a tape-shaped elastic body 9 and D-rings (made of, for example, steel) 10 provided on both ends of the elastic body 9. The elastic body 9 is made by stacking multiple sheets (for example, 10 sheets) of tape-shaped butyl rubber.

[0027] A method for attaching the vibration-damping members 7 to a vibration-damping reinforcement grille will be described below with reference to FIG. 5. FIG. 5 is a side view of the vibration-damping reinforcement grille. As shown in FIG. 5, a first bolt 11 is inserted through the thickness of the vibration-damping reinforcement grille at the center of the engagement (joint) between the vertical grille 5 (or inner frame 4) and the horizontal grille 6 (or inner frame 4), with both ends of the first bolt 11 protruding from the vibration-damping reinforcement grille. The protruding portion of this first bolt 11 is inserted into a D-ring 10 of the vibration-damping member 7. To prevent the D-ring 10 from falling off the first bolt 11 due to vibrations such as an earthquake, a washer (e.g., steel) 12 larger than the D-ring 10 is inserted through the first bolt 11, and the bolt is then tightened with a nut 13. In this way, by hooking the D-ring 10 onto the first bolt 11, the vibration-damping members 7 are attached to the grille portion of the vibration-damping reinforcement grille in a brace-like manner.

[0028] The vibration-damping members 7 provided from the upper right to the lower left of the lattice portion are arranged on one side of the vibration-damping reinforcement surface lattice, and the vibration-damping members 7 provided from the upper left to the lower right of the lattice portion are arranged on the other side of the vibration-damping reinforcement surface lattice. This is because, when two vibration-damping members 7 are provided on only one side of the vibration-damping reinforcement surface lattice, the first bolts 11 must protrude a long distance in the thickness direction of the wall. When it is acceptable for the first bolts 11 to protrude a long distance in the thickness direction of the vibration-damping reinforcement surface lattice, two vibration-damping members 7 may be provided on one side.

[0029] In FIG. 1, the vibration-damping members 7 are provided on the left and right end lattice sections of the vibration-damping reinforcement grille. However, the number and arrangement of the lattice sections where the vibration-damping members 7 are provided are not limited to this. Other examples of the number and arrangement of the lattice sections where the vibration-damping members 7 are provided are shown in FIGS. 6(a) to 6(d). FIG. 6(a) shows a configuration in which the vibration-damping members 7 are provided on all lattice sections. FIG. 6(b) shows a configuration in which the vibration-damping members 7 are provided on every other lattice section to form a checkerboard pattern. FIG. 6(c) shows a configuration in which the vibration-damping members 7 are provided on the corner lattice sections of the vibration-damping reinforcement grille. FIG. 6(d) shows a configuration in which the vibration-damping members 7 are provided on the top and bottom lattice sections of the vibration-damping reinforcement grille. Note that FIGS. 1 and 6(a) to 6(d) are merely examples, and the number and arrangement of the lattice sections where the vibration-damping members 7 are provided may be appropriately determined based on the seismic strength. This improves seismic strength and design flexibility, allowing for greater design flexibility.

[0030] Figure 7 is a schematic diagram of the loading of a wall element specimen created by extracting one lattice portion of a vibration-damping reinforcement surface lattice. As shown in Figure 7, one lattice portion of a vibration-damping reinforcement surface lattice was extracted, and the ends of vertical lattice 5 and horizontal lattice 6 were rounded and tilted at a 45° angle. One lattice portion was then placed on top of a stack of steel plate 14, fluororesin sheet 15, and steel plate 16, and steel plate 17, fluororesin sheet 18, and steel plate 19 were placed on top of the one lattice portion, and a vertical load P was applied from above.

[0031] Figure 8(a) shows a test specimen that does not have a vibration-damping member 7 or vibration-damping rubber 8, Figure 8(b) shows a test specimen that has a vibration-damping member 7 but does not have vibration-damping rubber 8, and Figure 8(c) shows a test specimen that has vibration-damping rubber 8 but does not have a vibration-damping member 7.

[0032] The experimental results are shown in Figures 9 and 10. Figure 9 shows the upper envelope curve connecting the peaks at each deformation angle, with the vertical axis representing Q (kN) and the horizontal axis representing γ (%rad). In Figure 9, the fine dotted line represents the test specimen in Figure 8(a) that does not have the vibration-damping member 7 or vibration-damping rubber 8, the coarse dotted line represents the test specimen in Figure 8(b) that has the vibration-damping member 7 but does not have the vibration-damping rubber 8, and the solid line represents the test specimen in Figure 8(c) that has the vibration-damping rubber 8 but does not have the vibration-damping member 7. As shown in Figure 9, the experimental results showed no significant difference in the hardness (rigidity) and yield strength of the lattice part with or without the vibration-damping member 7 or vibration-damping rubber 8.

[0033] Figure 10 shows the equivalent viscous damping coefficient heq, with the vertical axis representing heq (%) and the horizontal axis representing γ (%). In Figure 10, the line dotted with circles represents the test specimen in Figure 8(a) that does not have the vibration-damping member 7 or vibration-damping rubber 8, the line dotted with crosses represents the test specimen in Figure 8(b) that has the vibration-damping member 7 but not the vibration-damping rubber 8, and the line dotted with squares represents the test specimen in Figure 8(c) that has the vibration-damping rubber 8 but not the vibration-damping member 7. As Figure 10 shows, the experimental results showed that the equivalent viscous damping constant, which represents the energy absorption capacity, was about 20 to 30 percent larger for the test specimen with the vibration-damping member 7 and vibration-damping rubber 8, demonstrating the effect of providing the vibration-damping member 7 and vibration-damping rubber 8.

[0034] As described above, according to the first embodiment, by providing the vibration-damping members 7 on the diagonal lines of the lattice portion of the vibration-damping reinforcement surface grille, the elastic force of the vibration-damping members 7 can be used to add damping performance in a direction perpendicular to the thickness direction of the vibration-damping reinforcement surface grille. The vibration-damping reinforcement surface grille is a shear wall with very high deformation capacity, which has a low maximum strength but undergoes only progressive plastic deformation even when the story drift angle exceeds 1 / 15 rad, without causing significant destruction. In this way, adding damping capacity to the vibration-damping reinforcement surface grille, which is already a shear wall with very high deformation capacity, can improve the seismic reinforcement effect.

[0035] Furthermore, because the vibration-damping members 7 are installed diagonally across the lattice portion of the vibration-damping reinforcement grille, there is no feeling of blockage or oppression, and the breathability, lighting, and design of the vibration-damping reinforcement grille are not impaired. In other words, the seismic reinforcement effect can be improved without impairing the characteristics of the vibration-damping reinforcement grille.

[0036] Furthermore, in this embodiment 1, vibration-damping rubber 8 is provided inside the half-joint joints at the joints of the vertical lattice 5 and horizontal lattice 6, and the adhesive and tackiness of this vibration-damping rubber 8 further adds damping performance in the direction perpendicular to the thickness direction of the vibration-damping reinforcement surface lattice, improving the earthquake reinforcement effect. Furthermore, even if vibration-damping rubber 8 is provided inside the half-joint joints, there is no feeling of obstruction or oppression, and breathability, lighting, and design are not impaired.

[0037] Furthermore, by arranging the vibration-damping member 7 extending from the upper right to the lower left of the lattice portion on one side of the vibration-damping reinforcement surface lattice, and by arranging the vibration-damping member 7 extending from the upper left to the lower right of the lattice portion on the other side of the vibration-damping reinforcement surface lattice, it is possible to prevent the protruding length of the first bolt 11 from becoming too long and biased towards one side of the vibration-damping reinforcement surface lattice.

[0038] The lattice wall with vibration-damping properties according to the first embodiment may be installed in a new building or as seismic reinforcement for an existing building. When installing a lattice wall with vibration-damping properties as seismic reinforcement for an existing building, the existing beams 1, foundation 2, and columns 3 may be distorted. In such cases, by providing an inner frame 4 and adjusting the dimensions of the lattice wall with vibration-damping properties according to the first embodiment, it is possible to install the lattice wall with vibration-damping properties while minimizing damage to the existing wood.

[0039] Furthermore, the high-wall-magnification-factor surface lattice vibration-damping wall shown in Non-Patent Document 1 improves the wall strength by reinforcing it with metal fittings, and is different from the vibration-damping-reinforced surface lattice that focuses on deformation capacity and adds damping performance as in Embodiment 1. Furthermore, the lattice wall in Patent Document 5 is a technology that increases the opening area without compromising the wall magnification, and is not a vibration-damping wall, so it is different from Embodiment 1.

[0040] [Embodiment 2] In the first embodiment, one example of the vibration-damping member 7 was described, but other configurations of the vibration-damping member 7 are possible as long as they are configured to be attached in a cross-like manner to the lattice portion of the vibration-damping reinforcement surface grille. In the second embodiment, another example of the vibration-damping member 7 will be described. The configuration other than the vibration-damping member 7 is the same as in the first embodiment, so a description thereof will be omitted.

[0041] Figure 11 is a schematic diagram showing a vibration-damping member 7 of the second embodiment. Figure 11(a) is an exploded side view, Figure 11(b) is a side view, Figure 11(c) is a plan view, and Figure 11(d) is an exploded plan view. As shown in Figure 11, the vibration-damping member 7 includes a tape-shaped elastic body 20, a first flat plate 21 attached to one surface of both ends of the elastic body 20, a second flat plate 22 attached to the other surface of both ends of the elastic body 20, a washer 23, a second bolt 24, and a nut 25.

[0042] The elastic body 20 is formed by stacking multiple sheets (e.g., 10 sheets) of tape-like butyl rubber. First through holes 20a, 21a, and 22a are formed in both ends of the elastic body 20, the first flat plate 21, and the second flat plate 22, through which a second bolt 24 passes. The first flat plate 21 also has a second through hole 21b through which a first bolt 11 (described later) passes. The second bolt 24 is inserted through the washer 23, the first through hole 21a of the first flat plate 21, the first through hole 20a of the elastic body 20, the first through hole 22a of the second flat plate 22, and the washer 23 in that order, and then tightened with a nut 25, so that both ends of the elastic body 20 are sandwiched between the first flat plate 21 and the second flat plate 22. Here, the nuts 25 may be locking nuts to prevent the nuts from loosening.

[0043] Next, a method for attaching the vibration-damping member 7 of the second embodiment to a surface grille vibration-damping wall will be described. As in the first embodiment, a first bolt 11 is inserted through the center of the engagement (joint) between the vertical grille 5 (or inner frame 4) and the horizontal grille 6 (or inner frame 4) in the thickness direction of the surface grille vibration-damping wall, so that both ends of the first bolt 11 protrude from the surface grille vibration-damping wall. The protruding portion of this first bolt 11 is inserted into the second through-hole 21b of the first flat plate 21 of the vibration-damping member 7. The rest of the process is the same as in the first embodiment. To prevent the first flat plate 21 from falling off the first bolt 11 due to vibrations such as an earthquake, a washer (e.g., steel) 12 is inserted and then tightened with a nut 13. In this way, by hooking the first flat plate 21 onto the first bolt 11, the vibration-damping member 7 is attached in a brace-like manner to the lattice portion of the surface grille vibration-damping wall.

[0044] As described above, according to the second embodiment, the same effects as those of the first embodiment can be achieved.

[0045] [Embodiment 3] In the first and second embodiments, examples in which the vibration-damping reinforcement surface grille is used on a wall (vertical surface) have been described, but the vibration-damping reinforcement surface grille can also be applied to a ceiling (horizontal surface). In the third embodiment, an example in which the vibration-damping reinforcement surface grille is applied to a ceiling (horizontal surface) will be described.

[0046] Fig. 12 is a front view of the vibration-damping reinforcement surface grille in embodiment 3. As shown in Fig. 12, reference numeral 1 denotes a beam provided on the ceiling surface, and reference numeral 26 denotes a girder provided on the ceiling surface.

[0047] The vibration-damping reinforcement surface lattice of the third embodiment is installed in a horizontal rectangular space surrounded by structural materials of a building, such as two beams 1 and two girders 26. Taking into consideration earthquake reinforcement of cultural heritage buildings and the like, and taking care to minimize damage to the existing wood, an inner frame 27 of the same dimensions as the lattice materials (vertical lattice 28 and horizontal lattice 29, described below) is installed inside the rectangular space surrounded by the two beams 1 and two girders 26.

[0048] The inner frame 27 is formed by two vertical frames parallel to the beams 1 and two horizontal frames parallel to the girders 26. In other words, the inner diameter enclosed by the two beams 1 and two girders 26 and the outer diameter of the inner frame 27 are the same dimension, and the inner frame 27 fits into the rectangular space enclosed by the two beams 1 and two girders 26. The two beams 1, two girders 26 and inner frame 27 are joined by, for example, coach bolts.

[0049] A plurality of vertical lattices 28 are provided between the two horizontal frames of the inner frame 27. A plurality of horizontal lattices 29 are provided between the two vertical frames of the inner frame 27. The vertical lattices 28 and the horizontal lattices 29 are perpendicular to each other. As shown in Figure 12, the vibration-damping reinforcement surface lattice is formed with a plurality of lattice sections. The vertical lattices 28 and the horizontal lattices 29 are joined to the inner frame 27 with tenons and mortise joints. The joints (engagement sections) where the vertical lattices 28 and the horizontal lattices 29 intersect are half-joint joints. Vibration-damping rubber 8 is provided at the joints between the vertical lattice 28 and the horizontal lattice 29, as in embodiment 1 (Figure 3).

[0050] 12, the vibration-damping members 7 are provided in at least one of the lattice portions formed by the inner frame 27, the vertical lattice 28, and the horizontal lattice 29. As in the first embodiment, the vibration-damping members 7 are arranged in a cross-shaped manner on the diagonal lines of the lattice portion.

[0051] The vibration-damping members 7 may be those of either embodiment 1 or embodiment 2, and may have any other configuration as long as they are attached to the lattice portion in a cross-hatched manner. The method of attaching the vibration-damping members 7 to the surface lattice is also the same as in embodiments 1 and 2. As in embodiments 1 and 2, one vibration-damping member 7 may be provided on one surface of the vibration-damping reinforced surface lattice portion and one vibration-damping member 7 on the other surface of the vibration-damping reinforced surface lattice portion, or two vibration-damping members 7 may be provided on one surface of the vibration-damping reinforced surface lattice portion. Furthermore, as in embodiments 1 and 2, the number and arrangement of lattice portions to which vibration-damping members 7 are attached may be freely designed.

[0052] The vibration-damping reinforced surface grille of this embodiment 3 can be applied to the ceilings of ordinary buildings and the ceilings of the main building (body) of traditional wooden architecture. Furthermore, the vibration-damping reinforced surface grille of this embodiment 3 can be applied not only to the ceiling of the main building (main building) of a building, but also to the ceilings of the eaves and porches that protrude from the main building. In other words, it can be installed anywhere where a rectangular space is formed on a horizontal surface by beams or girders. By applying the vibration-damping reinforced surface grille of this embodiment 3 to the ceiling of the eaves or porch, the strength of the eaves and porch can be improved.

[0053] As described above, according to the third embodiment, a surface grille is installed in a location where a rectangular space is formed in a horizontal plane by beams or girders, and vibration-damping members 7 are provided on the diagonal of the grille portion of the surface grille. This allows the elastic force of the vibration-damping members 7 to add damping performance in a direction perpendicular to the thickness direction of the surface grille (horizontal direction). Although the maximum strength of a surface grille is low, it has an extremely high deformation capacity; even if the inter-story drift angle exceeds 1 / 15 rad, plastic deformation simply progresses and no significant destruction occurs. In this way, by adding damping capacity to a vibration-damping reinforcement surface grille, which already has an extremely high deformation capacity, the seismic reinforcement effect can be improved.

[0054] Furthermore, because the vibration-damping members 7 are installed diagonally across the lattice portion of the grille, there is no sense of claustrophobia or oppression, and the ventilation, lighting, and design of the grille are not impaired. In other words, the seismic reinforcement effect can be improved without impairing the characteristics of the grille. In particular, by applying the vibration-damping reinforcement grille of this embodiment 3 to the ceiling of the eaves or porch, it is possible to improve the ventilation, lighting, and design of the eaves or porch.

[0055] Also in this third embodiment, as in the first embodiment, vibration-damping rubber 8 is provided inside the half-joint joints at the joints of the vertical lattice 28 and the horizontal lattice 29, and the adhesive and tackiness of this vibration-damping rubber 8 further adds damping performance in the direction perpendicular to the thickness direction of the vibration-damping reinforcement surface lattice, improving the seismic reinforcement effect. Furthermore, even if vibration-damping rubber 8 is provided inside the half-joint joints, there is no feeling of blockage or oppression, and breathability, lighting, and design are not impaired.

[0056] Furthermore, the surface grille of the third embodiment may be installed in a new building, as in the first embodiment, or may be installed as seismic reinforcement for an existing building. When installing a vibration-damping reinforcement surface grille as seismic reinforcement for an existing building, the existing beams 1 and girders 26 may be distorted. In such cases, by providing an inner frame 27 as in the vibration-damping reinforcement surface grille of the third embodiment and adjusting the dimensions of the inner frame 27, it is possible to install the vibration-damping reinforcement surface grille while minimizing damage to the existing wood.

[0057] [Embodiment 4] In the fourth embodiment, the lattice portion is covered with a rubber sheet when the earthquake-resistance reinforcement effect is insufficient in the first to third embodiments. The fourth embodiment is applicable to the first to third embodiments.

[0058] Fig. 13 shows a front view of the vibration-damping reinforced surface grille of this embodiment 4, and Fig. 14 shows a cross-sectional view of the vibration-damping reinforced surface grille of this embodiment 4. Note that the vibration-damping members 7 are omitted from Figs. 13 and 14.

[0059] 13 and 14, at least one of the multiple lattice portions of the vibration-damping reinforcement surface grille is covered with a rubber sheet 30. In Fig. 13, the lattice portions at the left and right ends of the vibration-damping reinforcement surface grille are covered with rubber sheet 30, but the number and arrangement of lattice portions covered with rubber sheet 30 may be designed as appropriate.

[0060] The thickness of the rubber sheet 30 is, for example, 3 mm to 12 mm. The rubber sheet 30 is fixed to the inner frame 4, the vertical lattice 5, and the horizontal lattice 6 with nails, screws, or the like.

[0061] As described above, according to the present embodiment 4, the same effects as those of the embodiments 1 to 3 can be achieved. Furthermore, when the vibration-damping member 7 and the vibration-damping rubber 8 of the embodiments 1 to 3 do not provide sufficient seismic reinforcement effect, the provision of the rubber sheet 30 can improve the seismic reinforcement effect.

[0062] Although the present invention has been described in detail above only with respect to the specific examples, it will be apparent to those skilled in the art that various modifications and variations are possible within the scope of the technical concept of the present invention, and it is natural that such modifications and variations fall within the scope of the claims. [Explanation of symbols]

[0063] DESCRIPTION OF SYMBOLS 1...Beam, 2...Foundation, 3...Column, 4, 27...Inner frame, 5, 28...Vertical lattice, 6, 29...Horizontal lattice, 7...Vibration-damping member, 8...Vibration-damping rubber, 9, 20...Elastic body, 10...D-ring, 11...First bolt, 12, 23...Washer, 13, 25...Nut, 14, 16, 17, 19...Iron plate, 15, 18...Fluororesin sheet, 21...First flat plate, 22...Second flat plate, 24...Second bolt, 20a, 21a, 22a...First through hole, 21b...Second through hole, 26...Girder, 30...Rubber sheet

Claims

1. An inner frame formed of two vertical frames and two horizontal frames, which is provided in a rectangular space surrounded by structural materials of the building; A plurality of vertical lattices provided between the two horizontal frames of the inner frame; A plurality of horizontal lattices are provided between the two vertical frames of the inner frame in a direction perpendicular to the vertical lattices; A vibration-damping reinforcement surface grille having a plurality of grid portions formed thereon, A vibration-damping reinforced surface grille, characterized in that a vibration-damping member is provided in a cross-shaped manner on the diagonal line of at least one of the plurality of grille portions.

2. The inner frame is The structure is formed by a beam, two horizontal frames parallel to the foundation, and two vertical frames parallel to the two columns, 2. The vibration-damping reinforcement surface grille according to claim 1, wherein the surface grille is provided in a vertical direction.

3. The inner frame is The frame is formed by two vertical frames parallel to the beams and two horizontal frames parallel to the girders, 2. The vibration-damping reinforcement surface grille according to claim 1, wherein the grille is provided in a horizontal direction.

4. 2. A vibration-damping reinforced surface grille according to claim 1, characterized in that the joints where the vertical and horizontal lattices intersect are joined by half-joints, and vibration-damping rubber is provided at the joints of the vertical and horizontal lattices.

5. 2. The vibration-damping reinforced surface grille according to claim 1, wherein the vibration-damping members provided from the upper right to the lower left of the grille portion are arranged on one side of the vibration-damping reinforced surface grille, and the vibration-damping members provided from the upper left to the lower right of the grille portion are arranged on the other side of the vibration-damping reinforced surface grille.

6. a first bolt penetrates through an engagement portion where the vertical lattice or the inner frame engages with the horizontal lattice or the inner frame in a thickness direction of the vibration-damping reinforcement surface lattice; The vibration damping member is an elastic body formed in a tape shape; D-rings provided on both ends of the elastic body; Equipped with 2. The vibration-damping reinforced surface grille according to claim 1, wherein the vibration-damping member is attached to the vibration-damping reinforced surface grille with the first bolt inserted through the D-ring.

7. a first bolt penetrates through an engagement portion where the vertical lattice or the inner frame engages with the horizontal lattice or the inner frame in a thickness direction of the vibration-damping reinforcement surface lattice; The vibration damping member is an elastic body formed in a tape shape and having a first through hole; a first flat plate attached to one surface of each end of the elastic body and having a first through hole and a second through hole formed therein; a second flat plate attached to the other surface of each end of the elastic body and having a first through hole formed therein; a second bolt that is inserted through the first through hole of the first flat plate, the first through hole of the elastic body, and the first through hole of the second flat plate, and that is fastened with a nut to sandwich both ends of the elastic body between the first flat plate and the second flat plate; Equipped with 2. The vibration-damping reinforced surface grille according to claim 1, wherein the vibration-damping member is attached to the vibration-damping reinforced surface grille with the first bolt inserted into the second through-hole of the first flat plate.

8. 2. The vibration-damping reinforced surface grille according to claim 1, wherein at least one of the plurality of grille portions is covered with a rubber sheet.

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