Seismic strengthening structure and seismic reinforcement method

Abstract

To provide a light and economical seismic strengthening structure that can be applied to lightweight wooden buildings.SOLUTION: Multiple brackets 2, to which elastic elements are bonded, are installed at corners of a timber building via connecting support rods 300 to enhance the strength of the building and improve seismic resistance.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to earthquake-resistant reinforcement, and more particularly to an earthquake-resistant reinforcement structure and earthquake-resistant construction method that can be installed in buildings made of lightweight wooden structures to improve earthquake resistance. [Background technology]

[0002] An earthquake is a phenomenon in which the earth's internal energy is released to the surface, causing the earth to crack and shake. The shaking that occurs at this time acts as a load on buildings, causing enormous damage to them. In Japan, earthquake-resistant design is mandatory for all wooden houses, including detached houses, regardless of the number of floors or floor area.

[0003] In order for buildings to meet earthquake-resistant design standards, numerous technologies have been developed to improve earthquake resistance. For example, Korean Patent Publication No. 10-2017-0055501 proposes installing dampers in buildings to absorb vibration energy caused by earthquakes.

[0004] However, the above-mentioned conventional earthquake resistance improvement technologies can only be applied to heavy buildings, and the earthquake-resistant reinforcement structures used to improve earthquake resistance are heavy and expensive, limiting their application to lightweight wooden buildings. Furthermore, although it has been over 30 years since the American-style lightweight wooden housing construction method was introduced to Korea, there are currently very few earthquake-resistant reinforcement technologies suitable for the geographical and structural characteristics of Korea. Therefore, there is an urgent need to develop earthquake-resistant reinforcement structures that can be applied to lightweight wooden buildings. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been devised to solve the above-mentioned problems, and an object of the present invention is to provide a lightweight and economical earthquake-resistant reinforcement structure that can be applied to lightweight wooden buildings.

[0006] The objects of the present invention are not limited to those mentioned above, and other objects not mentioned will be clearly understood from the following description. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present invention provides an earthquake-resistant reinforcement structure for a wooden building, comprising a floor, a wall connected perpendicularly to the floor, and a ceiling connected perpendicularly to the wall and disposed parallel to the floor, the earthquake-resistant reinforcement structure further comprising a first bracket connecting an upper surface of the floor to an inner surface of one side of the wall, and a second bracket connecting an underside of the ceiling to an inner surface of the other side of the wall, the first bracket comprising a horizontal portion formed on a flat surface without bending and connected to the upper surface of the floor, a vertical portion formed on a flat surface without bending and connected to the inner surface of the one side of the wall, and a curved portion formed on a predetermined curvature without bending and connecting one end of the horizontal portion to one end of the vertical portion, the second bracket comprising a horizontal portion formed on a flat surface without bending and connected to the upper surface of the ceiling, and a vertical portion formed on a flat surface without bending and connected to the inner surface of the other side of the wall and a curved portion that is formed with a predetermined curvature without bending and connects one end of the horizontal portion of the second bracket to one end of the vertical portion, the horizontal portion of the first bracket and the horizontal portion of the second bracket are connected by a connecting support rod that extends in a long vertical shape, so that in the event of an earthquake, the first bracket and the second bracket, which are formed with a flat and curved surface without bending, allow the wall to vibrate in the left and right direction, and the connecting support rod that connects the horizontal portion of the first bracket to the horizontal portion of the second bracket restricts the wall to vibrate in the left and right direction, a reinforcing bracket is installed between the wall and the connecting support rod at an intermediate height between the first bracket and the second bracket, the reinforcing bracket has a "⊂" shape when viewed from the side, and includes: a flat upper plate; a flat lower plate that faces the upper plate; and side plates that connect the upper plate and the lower plate and extend in the height direction.

[0008] The upper and lower plates of the reinforcing bracket are drilled with through holes through which the connecting support rods pass, and the connecting support rods are fastened to the through holes on the upper and lower plates by fastening nuts, washers positioned in contact with the fastening nuts, and elastic washers in contact with the other side of the washers and in contact with the upper or lower plate. The elastic washers are made of rubber and have a diameter larger than that of the fastening nuts, so that they can provide an elastic body that functions as a damper.

[0009] Each of the first bracket and the second bracket is connected to the connecting support rod by a fastening nut, a washer positioned in contact with the fastening nut, and an elastic washer in contact with the other side of the washer and in contact with the floor or ceiling, so that elastic bodies provided by the elastic washer can be installed at the top, bottom, and middle points of the connecting support rod.

[0010] The reinforcing bracket may be made of ATOS 780, which is high-strength steel for automotive structures (ATOS) and has not undergone a hot forming process.

[0011] The connecting support rod may include a plurality of threaded rods each having a vertically long length, a male thread formed on an outer surface, and continuously arranged in the vertical direction, and a tubular connector having a female thread formed on an inner surface, both ends of which are threadedly connected to the threaded rods each having a vertically long length and a tension adjustable.

[0012] The connecting support rod may vertically penetrate the horizontal portions of the first bracket and the second bracket and the ceiling portion of the building, with an upper end fixed to the ceiling portion and a lower end inserted into the floor portion of the building, and the seismic reinforcement structure may further include an anchor that is installed at the portion of the floor portion where the lower end of the connecting support rod is inserted to surround the lower end of the connecting support rod and fix the connecting support rod.

[0013] The earthquake-resistant reinforcement structure further includes an anchor having a predetermined shape, comprising an insertion portion embedded in the floor portion, and a protrusion extending upward from the insertion portion, penetrating vertically through the first bracket, and protruding above the floor portion, and the connecting support rod may vertically penetrate the horizontal portion of the second bracket and the ceiling portion of the building, with its upper end fixed to the ceiling portion and its lower end connected to the upper end of the protrusion.

[0014] The wall body consists of a first wall body and a second wall body connected perpendicularly to the first wall body, and the connection portion between the first wall body and the second wall body forms a corner portion, and the first bracket, second bracket, reinforcing bracket, and connecting support rod form a first seismic module and are installed at the corner portion connected to the first wall body, and another additional first bracket, second bracket, reinforcing bracket, and connecting support rod form a second seismic module and are installed at the corner portion connected to the second wall body, so that the corner portion of the wall body is doubly supported by the first seismic module and the second seismic module and seismic resistance can be improved. [Effects of the Invention]

[0015] The earthquake-resistant reinforcement structure and earthquake-resistant construction method of the present invention configured as described above has the effect of supporting vibrations in the left-right direction by using a bracket configuration to support the space between the wall and floor or the space between the wall and ceiling.

[0016] In particular, the shape characteristics of the curved surface allow the vertical portion to elastically support the wall body relative to the horizontal portion, thereby absorbing vibrations in the left-right direction and improving earthquake resistance.

[0017] Furthermore, due to the length ratio between the horizontal and vertical portions, the wall surface can be effectively supported without a large load being applied to the horizontal portion.

[0018] In addition, the structure of the connecting support rods maintains a constant distance between the ceiling and floor, which has the effect of supporting the ceiling and dispersing the load concentrated on the wall when vertical vibrations occur.

[0019] In addition, the length can be adjusted by using a threaded rod and a connecting support rod made up of a connector, so it can be applied to buildings of various heights and has the effect of being able to adjust the tension applied between the ceiling and floor.

[0020] Furthermore, the anchor structure allows the connecting support rods to be fixed to the floor of the building, and the relative position of the connecting support rods to the entire floor of the building is fixed, which has the effect of preventing the building from collapsing.

[0021] In addition, intermediate brackets can be used to further increase the strength of wooden buildings and improve earthquake resistance. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a side cross-sectional view showing a state in which an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention is installed in a high-rise building; [Figure 2] FIG. 2 is a perspective view showing the configuration of a first bracket or a second bracket. [Figure 3] FIG. 4 is a side cross-sectional view showing a state in which the first bracket and the second bracket are installed on a building. [Figure 4] 1 is a partial side cross-sectional view showing a state in which the upper end of a connecting support rod included in an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention is fixed to a ceiling. [Figure 5] 1 is a side cross-sectional view showing the form of anchors used when applying an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention to an existing building. FIG. [Figure 6] 10 is a side cross-sectional view showing the form of anchors used when applying an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention to a newly constructed building. FIG. [Figure 7] 10 is an assembly view showing the configuration of each part of a connecting support rod included in an earthquake-resistant reinforcement structure according to another preferred embodiment of the present invention. [Figure 8] 1 is a side cross-sectional view showing a multi-story building to which an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention is applied; [Figure 9] 10A and 10B are diagrams showing an earthquake-resistant reinforcement structure to which a reinforcement bracket is applied as another embodiment of the present invention. [Figure 10a] 1A and 1B are diagrams showing a reinforcing bracket of the present invention; [Figure 10b] FIG. [Figure 10c] FIG. [Figure 10d] 1A and 1B are diagrams showing a reinforcing bracket of the present invention; [Figure 11] 4 is an enlarged view showing the fastening structure between the first bracket and the connecting support rod. FIG. [Figure 12] FIG. 10 is a diagram showing the earthquake-resistant reinforcement structure of FIG. 9 applied to multiple layers. [Figure 13] 1 is a diagram illustrating an earthquake-resistant reinforcement structure of the present invention applied to a corner portion of a wall body. DETAILED DESCRIPTION OF THE INVENTION

[0023] Before describing the technical idea of ​​the present invention in more detail based on the accompanying drawings, the terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention, in accordance with the principle that an inventor can appropriately define the concepts of terms in order to best describe his or her invention.

[0024] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely the best embodiment of the present invention and do not fully represent the technical ideas of the present invention, and that there may be various modifications that can replace them at the time of filing this application.

[0025] The technical concept of the present invention will be described in more detail below with reference to the accompanying drawings. The accompanying drawings are merely examples shown to more specifically explain the technical concept of the present invention, and the technical concept of the present invention is not limited to the shapes of the accompanying drawings.

[0026] [Seismic reinforcement structure] FIG. 1 is a side cross-sectional view showing an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention installed in a building.

[0027] As shown in FIG. 1, the earthquake-resistant reinforcement structure 1000 according to a preferred embodiment of the present invention is applied to a lightweight wooden building 10 to improve the earthquake resistance of the building 10, and roughly includes a first bracket 101, a second bracket 103, an anchor 500, and a connecting support rod 300.

[0028] Before explaining the configuration of each of the above-mentioned parts, we will briefly explain the structure of a building 10 to which the earthquake-resistant reinforcement structure 1000 according to a preferred embodiment of the present invention can be applied. The building 10 includes a floor section 11 having steel bars arranged inside the ground, a first floor layer 11a made of concrete, and a second floor layer 11b made of lightweight wood laminated on top of the first floor layer 11a, walls 13 installed vertically to the floor section 11 to form a predetermined space above the floor section 11, and a ceiling section 15 installed vertically in contact with each wall 13, covering the upper end of the space surrounded by the walls 13.

[0029] The first bracket 101 is installed at the location where the floor 11 and the wall 13 meet, and serves to support the wall 13 when the wall 13 sways left and right due to an earthquake or the like. The second bracket 103 is installed at the location where the ceiling 15 and the wall 13 meet, and also serves to support the wall 13 when the wall 13 sways left and right due to an earthquake or the like.

[0030] FIG. 2 is a perspective view showing the first bracket or the second bracket.

[0031] Since the first bracket 101 and the second bracket 103 are formed to have the same shape, the first bracket 101 and the second bracket 103 will be hereinafter referred to as bracket 100, and their shapes will be described together with reference to Fig. 2. The bracket 100 includes a horizontal portion 110, a vertical portion 150, and a curved portion 130. The horizontal portion 110 and the vertical portion 150 are each formed to extend to a predetermined length and are connected to each other perpendicularly. Between the vertical portion 150 and the horizontal portion 110, there is formed a curved portion 130 that connects the two and has a predetermined radius of curvature R.

[0032] The horizontal portion 110 is a portion that contacts the floor or ceiling of a building, and the vertical portion 150 is a portion that contacts a wall. The extension direction of the horizontal portion 110 is referred to as a first direction, and the length of the bracket 100 in the first direction is referred to as L1. The length L2 in the second direction, which is the extension direction of the vertical portion 150, is 1.5L1 to 4L1. It is preferably 1.7L1 to 3.2L1, and more preferably 1.9L1 to 2.1L1. The ratio of the first length L1 to the second length L2 of the bracket 100 is determined based on the following considerations: if the second length L2 is too long compared to the first length L1, the horizontal portion 110 may be easily damaged due to an increased load acting on it; conversely, if the second length L1 is too short, the horizontal portion 110 may not be able to support the load acting on the wall, which may result in the wall collapsing easily when vibrations occur in the left-right direction.

[0033] Furthermore, when the length of bracket 100 in the first direction is L1, the width direction of bracket 100, i.e., the length L3 in the third direction which is perpendicular to the first and second directions, is preferably 0.1L1 or more and 0.4L1 or less, preferably 0.2L1 or more and 0.3L1 or less, and more preferably 0.22L1 or more and 0.25L1 or less. The thickness t of bracket 100 is preferably 0.1L3 or more and 0.2L3 or less, preferably 0.12L3 or more and 0.15L3 or less, and more preferably 0.13L3 or more and 0.14L3 or less.

[0034] FIG. 3 is a side cross-sectional view showing the first bracket and the second bracket installed on a building. Referring briefly to FIG. 3, when the height of the wall 13 of the building is H, the length L2 in the second direction is preferably set to 0.1H or more and 0.4H or less, more preferably 0.1H or more and 0.2H or less, and most preferably 0.125H.

[0035] The shape of the curved surface portion 130 will now be described with reference to FIG. 2. As described above, the curved surface portion 130 is formed to connect the horizontal portion 110 and the vertical portion 150 to each other, and is formed with a predetermined radius of curvature R. Here, the radius of curvature R is formed in the range of 0.1L1 to 0.5L1. Preferably, it is formed in the range of 0.2L1 to 0.3L1, and more preferably, it is formed in the range of 0.2L1 to 0.25L1. Furthermore, the length of the curved surface portion 130 in the first direction is formed in the range of 0.1L1 to 0.7L1, preferably, 0.3L1 to 0.6L1, and most preferably, 0.4L1 to 0.5L1. The length of the curved surface portion 130 in the second direction is formed in the range of 0.1L2 to 0.5L2, preferably, 0.2L2 to 0.4L2, and most preferably, 0.2L2 to 0.3L2. The bracket 100 included in the earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention has the radius of curvature R of the curved portion 130 and the lengths in the first and second directions of the curved portion 130 formed within the above-mentioned ranges, thereby reducing the stress concentration phenomenon at the connection portion between the horizontal portion 110 and the vertical portion 150, and thereby exhibiting the effect of not easily being damaged when vibrations occur in the left-right direction.

[0036] When the first bracket 101 and the second bracket 103 are installed on a building, the first bracket 101 is installed so that the horizontal portion 110 extends in contact with the floor of the building and the vertical portion 150 extends in contact with the wall, and the second bracket 103 is installed so that the horizontal portion 110 extends in contact with the ceiling and the vertical portion 150 extends in contact with the wall.

[0037] Furthermore, the horizontal portion 110 of the first bracket 101 and the horizontal portion 110 of the second bracket 103 are arranged to be positioned on the same line in the vertical direction when installed on a building.

[0038] The horizontal portion 110 is formed with a through hole 111 into which a connecting support rod or anchor (described later) is inserted. The through hole 111 is formed on the side where the curved surface portion 130 is formed in the first direction, and is formed at the center of the horizontal portion 110, i.e., at a point 0.5L3 in the third direction, and the diameter of the through hole 111 is preferably 0.2L3 to 0.25L3. For example, if the length L3 of the bracket in the third direction is 90 mm, the diameter of the through hole 111 is approximately 18mm to 22.5mm, most preferably 20mm.

[0039] For reference, it has been explained that the first bracket 101 and the second bracket 103 are arranged so that their respective horizontal portions 110 are aligned vertically when installed on a building. However, more precisely, it is preferable that the through-hole 111 of the first bracket 101 and the through-hole 111 of the second bracket 103 are aligned vertically.

[0040] The horizontal portion 110 and vertical portion 150 of each of the first bracket 101 and second bracket 103 are fixed to the bottom, wall, and ceiling with screws (not shown). For this purpose, screw holes 120 are formed in each of the horizontal portion 110 and vertical portion 150. The screw holes 120 are formed in pairs in the third direction, i.e., the width direction, and have a diameter of 0.07L3 to 0.075L3. For example, when L3 is 90 mm, the diameter of the screw holes 120 is 6.3 mm to 6.75 mm, preferably 6.5 mm.

[0041] In detail, the screw holes 120 formed in the horizontal portion 110 are positioned at points spaced apart by a length of 0.7L1 to 0.9L1, more precisely, 0.8L1, in the first direction from the side where the vertical portion 150 is formed. This is to prevent a problem in which the bracket 100 cannot move flexibly when vibrations occur in the left-right direction, which would otherwise occur if the screw holes 120 were formed too close to the curved portion 130, thereby reducing earthquake resistance, and also to prevent a problem in which the bracket 100 cannot move flexibly when vibrations occur in the left-right direction, by forming the through holes 111, the load on the screws that fasten the connecting support rods (described later) to the screw holes 120 is distributed.

[0042] For the same reason as the screw holes 120 formed in the horizontal portion 110, the screw holes 120 formed in the vertical portion 150 are formed at intervals of 0.125L2 in the second direction starting from a point 0.25L2 away from the side where the horizontal portion 110 is formed. Here, the number of screw holes 120 formed in the vertical portion 150 is formed in a range of 1 to 6 pairs. This value takes into consideration that the maximum number of screws that can be inserted into the screw holes 120 without affecting the fatigue level of the bracket 100 is 12. For reference, it goes without saying that the number of screw holes 120 formed in the vertical portion 150 is most preferably 6 pairs.

[0043] 5, the screws p inserted into the screw holes 120 are galvanized wood screws having a diameter of 0.06L3 to 0.07L3 and a length of 0.8 to 0.9 times the thickness of the second floor layer 11b. For example, if L3 is 90mm and the thickness of the second floor layer 11b is 126mm, the screws p have a diameter of 5.4mm to 6.3mm and a length of 100.8mm to 113.4mm. Preferably, they have a diameter of 6mm and a length of 112mm.

[0044] 3, the connecting support rod 300 is a rod-shaped rod that is elongated in the vertical direction and has a male thread formed on its outer surface, and vertically connects the horizontal portions of the first bracket 101 and the second bracket 103. The connecting support rod 300 is installed as described above, and plays a role in maintaining a constant distance between the floor 11 and the ceiling 15 when vertical vibrations act on the building 10.

[0045] FIG. 4 is a partial side cross-sectional view showing a state in which the upper end of a connecting support rod included in an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention is fixed to a ceiling.

[0046] 4, the upper end of the connecting support rod 300 passes through the through-hole 111 of the second bracket 103 and the ceiling portion 15, and in order to prevent the connecting support rod 300 from coming off the through-hole 111 of the second bracket 103 and the ceiling portion 15, nuts 350 are installed on the upper and lower sides of the ceiling portion 15 at the portion of the connecting support rod 300 that passes through the ceiling portion 15 and the second bracket 103 to fix it. Here, a flat washer 351 is inserted between the nut 350 and the ceiling portion 15 so as to come into contact with the ceiling portion 15, and a spring washer 353 is further inserted between the flat washer 351 and the nut 350. The flat washer 351 serves to fix the connecting support rod 300 in the through hole and reduce movement, and the spring washer 353 serves to prevent the nut 350 and the flat washer 351 from slipping, to prevent the nut 350 from loosening, to adjust the play of the connecting support rod 300, and to adjust the horizontal distance between the floor and ceiling parts 15.

[0047] The lower end of the connecting support rod 300 can be fixed to the floor 11 in two ways.

[0048] FIG. 5 is a side cross-sectional view showing the form of anchors used when applying an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention to an existing building.

[0049] First, referring to Figure 5, the coupling relationship and structure of the lower end of the connecting support rod 300 when applying an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention to an existing building will be described. As shown in Figure 5, an anchor hole 510 is formed inside the floor below the through hole of the first bracket 101. Here, the anchor hole 510 is formed deep inside the first floor layer 11a. The inside of the anchor hole 510 is filled with a chemical anchor 500a, which is liquid during construction but hardens to a solid after construction, and the lower end of the connecting support rod 300 is inserted into the anchor hole 510 through the through hole 111 of the first bracket 101. That is, as the chemical anchor 500a hardens, the lower end of the connecting support rod 300 is firmly attached to the chemical anchor 500a, thereby being fixed to the floor 11 and not easily separated. Furthermore, similar to the upper end of the connecting support rod 300, a nut 350 is provided on the upper side where the connecting support rod 300 passes through the through hole of the bracket 101, and is screwed onto a male thread formed on the outer periphery of the connecting support rod 300. A flat washer 351 is inserted between the nut 350 and the bracket 101 so as to contact the bracket 101, and a spring washer 353 is inserted between the flat washer 351 and the nut 350.

[0050] FIG. 6 is a side cross-sectional view showing the form of anchors used when applying an earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention to a newly constructed building.

[0051] Referring to FIG. 6, the coupling relationship and structure of the lower end of the connecting support rod 300 when the seismic reinforcement structure according to a preferred embodiment of the present invention is applied to a newly constructed building will be described. As shown in FIG. 6, the anchor 500b includes an insertion portion 530 having a predetermined shape extending approximately laterally, and a protrusion portion 550 extending upward from the insertion portion 530. The insertion portion 530 is fixed by welding to reinforcing bars arranged inside the first floor layer 11a and embedded in the first floor layer 11a. The protrusion portion 550 penetrates the second floor layer 11b and passes through a through-hole 111 formed in the first bracket 101 to protrude above the floor portion 11, and a male thread is formed on the outer periphery of the protruding upper end. A flat washer 351, a spring washer 353, and a nut 350 are sequentially coupled to the upper end of the protrusion portion 550 on the floor portion 11, and the connecting support rod 300 is then connected via a connector 330. The connector 330 is in the form of a tube with a female screw formed on the inner circumferential surface, and the upper end of the protrusion 550 is screwed to the lower part, and the lower end of the connection support rod 300 is screwed to the upper part.

[0052] The connecting support rods 300 and anchors 500b are fixed to the floor 11 like tree roots in the event of an earthquake due to the above-mentioned connection structure, thereby preventing the building from easily collapsing.

[0053] Meanwhile, although the bracket 100 and the connecting support rod 300 have the above-mentioned coupling relationship, their shapes can be embodied in other ways.

[0054] FIG. 7 is an assembly diagram showing the configuration of each part of the connecting support rod included in the earthquake-resistant reinforcement structure according to another preferred embodiment of the present invention.

[0055] Since the height of the walls of the building 10 is not uniform, the desired length of the connecting support rod 300 also varies. To address this, the connecting support rod 300 may be composed of a plurality of threaded rods 310 and at least one connector 330. The connector 330 has the same shape as the connector described above, but different threaded rods 310 are coupled to the upper and lower parts thereof, allowing the connecting support rods 300 to be continuously connected to each other. That is, the overall length of the connecting support rod 300 can be adjusted through the connector 330, and the tension exerted by the connecting support rod 300 can be adjusted by adjusting the insertion depth of the threaded rod 310 inserted into the connector 330 when the connecting support rod 300 is fixed to the ceiling and floor.

[0056] FIG. 8 is a side cross-sectional view showing a multi-story building to which the earthquake-resistant reinforcement structure according to the preferred embodiment of the present invention is applied.

[0057] When a building to which the earthquake-resistant reinforcement structure according to a preferred embodiment of the present invention is applied has a multi-story structure including two or more floors, the first bracket 101 and the second bracket 103 are installed on each floor, as shown in Fig. 8. Here, the through holes of the first bracket 101 and the second bracket 103 installed on each floor are vertically aligned with each other. The upper end of the connecting support rod 300 passes through the second bracket 103 installed on the top floor and is fixed to the ceiling 15_1 of the top floor, and the lower end is fixed to an anchor 500 installed on the floor 11_1 of the bottom floor. The center of the connecting support rod 300 is connected to pass through the second bracket 103 and ceiling 15_1 of the top floor and the remaining brackets 101, 103, ceiling 15, and floor 11 except for the first bracket 101 and floor 11_1 of the bottom floor. In addition, before and after the connecting support rod 300 penetrates the floor 11 or ceiling 15 at the center, flat washers, spring washers and nuts 350 are attached to the outer periphery of the connecting support rod 300 to fix the position of the connecting support rod 300, thereby reducing vibrations generated from the connecting support rod 300 at the penetration point of the ceiling 15 or floor 11.

[0058] [Seismic construction method] Hereinafter, an earthquake-resistant construction method according to a first preferred embodiment of the present invention will be described in detail. The earthquake-resistant construction method described below is a sequential method for forming the earthquake-resistant reinforcement structure described above, so components with the same names or symbols as those described above will be considered to be the same.

[0059] In step 1), the reinforcing bars included in the floor 11 of the building 10 are arranged. Here, the reinforcing bars can be arranged after the ground is excavated to a predetermined size. A large number of reinforcing bars can be arranged in a lattice pattern on a horizontal plane on the ground, and the joints where different reinforcing bars intersect can be welded.

[0060] In step 2), the insertion portion 530 is fixed to the reinforcing bar so that the protrusion 550 of the anchor 500b protrudes at the position where the first bracket 101 is to be installed. It is preferable that the insertion portion 530 of the anchor 500b is formed horizontally and welded to the reinforcing bars arranged horizontally as shown in FIG.

[0061] In step 3), concrete is poured to embed the reinforcing bars and the insertion portion 530, thereby forming the first floor layer 11a of the building 10. Here, the first floor layer 11a is formed by stacking a second floor layer 11b made of lightweight wood on top of the first floor layer made of concrete, and the protrusion 550 protrudes above the floor portion 11a.

[0062] In step 4), a wall 13 and a ceiling 15 are formed above the floor to construct the building 10. Here, any part of the wall is formed to rise within a predetermined radius from the protrusion 550.

[0063] In step 5), the protrusion 550 is inserted into the through hole 111 formed in the horizontal portion 110 of the first bracket 101, and the first bracket 101 is then fixed to the floor 11 and wall 13, and the second bracket 103 is fixed to the ceiling 15 and wall 13 so as to face the first bracket 101. As described above, the through hole 111 formed in the second bracket 103 is positioned so as to be aligned vertically on the same line as the through hole 111 formed in the first bracket 101, and then the second bracket 103 is fixed to the ceiling 15 and wall 13.

[0064] In step 6), the upper end of the connecting support rod 300 is fixed by penetrating through the horizontal portion 110 of the second bracket 103 and the ceiling portion 15, and the lower end of the connecting support rod 300 is connected to the protruding portion 550. The upper end of the connecting support rod 300 can be fixed to the ceiling portion 15 by fastening a nut 350 to the upper end of the connecting support rod 300 that protrudes through the ceiling portion 15, and the lower end of the connecting support rod 300 can be connected to the protruding portion 550 by using the connector 330.

[0065] In step 7), the tension and length of the connecting support rod 300 are adjusted by adjusting the connector 330 and the threaded rod 310 included in the connecting support rod 300, thereby completing the process.

[0066] The above steps are a first example in which the building 10 has a single floor. If the building 10 has a multi-floor structure, some of the above steps are modified. Each modified step is described below.

[0067] In step 4), walls, ceilings 15, and floors 11 are further constructed above the floors to correspond to the number of floors included in the building 10. Here, the remaining floors excluding the top and bottom floors are lower and upper floors arranged adjacent to each other, and the ceiling of the lower floor may be on the same plane as the floor of the upper floor.

[0068] In step 5), the first bracket 101 and the second bracket 103 are fixed at positions facing each other for each floor, and the first bracket 101 and the second bracket 103 included in each floor are arranged on the same line, and in the case of the lowest floor, the protrusion 550 is inserted into the through hole 111 formed in the horizontal part of the first bracket 101. The through holes 111 formed in the first bracket 101 and the second bracket 103 installed on each floor are arranged on the same line in the vertical direction for the insertion of the connecting support rod 300.

[0069] In step 6), the upper end of the connecting support rod 300 is fixed by penetrating through the horizontal part 110 of the second bracket 103 of the top floor and the ceiling part 15_1, and the lower end of the connecting support rod 300 is connected to the protruding part 550 protruding from the upper side of the floor part of the bottom floor. For reference, if the building 10 has multiple floors, it goes without saying that anchors 500 for penetrating the connecting support rod 300 are not provided on the remaining floor parts except for the bottom floor.

[0070] Hereinafter, an earthquake-resistant construction method according to a second preferred embodiment of the present invention will be described in detail. The earthquake-resistant construction method according to the second preferred embodiment of the present invention is a method for further constructing an earthquake-resistant reinforcement structure on an already constructed building.

[0071] In step a), a hole is drilled in the floor 11 of the building 10 at a position where the first bracket 101 will be installed to form an anchor hole 510. The position where the first bracket 101 will be installed is preferably formed within a predetermined radius from the portion where the floor 11 and the wall 13 meet each other. Here, the predetermined radius will be within the length of the bracket 100 in the first direction.

[0072] In step b), a liquid chemical anchor (registered trademark) 500a is injected into the anchor hole 510.

[0073] In step c), the first bracket 101 is fixed to the floor and wall, and the second bracket 103 is fixed to the ceiling 15 and wall 13 so as to face the first bracket 101. Here, the fixing of the second bracket 103 can be performed at any time before step e), which will be described later, by changing the procedure.

[0074] In step d), the lower end of the connecting support rod 300 is inserted into the anchor hole 510 through the horizontal portion 110 of the first bracket 101, and the Chemical Anchor 500a is fixed. Here, the connecting support rod 300 is connected vertically to the floor portion 11.

[0075] In step e), the upper end of the connecting support rod 300 is fixed by penetrating through the horizontal portion 110 of the second bracket 103 and the ceiling portion 15. As in the first embodiment, in the second embodiment, a nut 350 can be connected to the upper end of the connecting support rod 300 protruding through the ceiling portion 15 to fix it.

[0076] In step f), the tension and length of the connecting support rod 300 are adjusted by adjusting the threaded rod 310 and the connector 330 included in the connecting support rod 300, thereby completing the process.

[0077] In the second embodiment, when the building 10 has a multi-story structure, some of the steps described above are modified and implemented. Each modified step will be described below.

[0078] In the step a), anchor holes 510 are formed only in the floor portion 11_1 of the lowest floor of the building 10.

[0079] In step c), the first bracket 101 and the second bracket 103 are fixed at positions facing each other for each floor, and the first bracket 101 and the second bracket 103 included in each floor are arranged on the same line in the vertical direction.

[0080] In step e), the upper end of the connecting support rod 300 is fixed by penetrating through the horizontal part 110 and the ceiling part 15_1 of the second bracket 100 of the top floor, and the ceiling parts 15 and floor parts 11 of the remaining floors except for the ceiling part 15_1 of the top floor and the floor part 11_1 of the bottom floor are connected by penetrating through the connecting support rod 300.

[0081] [Seismic-resistant structure using reinforcement brackets] Next, as another embodiment of the present invention, an earthquake-resistant reinforcement structure 1000 using a reinforcement bracket 2 will be described with reference to Fig. 9. The embodiment of Fig. 9 is an improved version of the structure to be installed on the existing wooden structure of Fig. 5, and differences from the previous embodiment will be mainly described.

[0082] In the earthquake-resistant reinforcement structure 1000 of the present invention, the reinforcement bracket 2 is installed between the wall body 13 and the connecting support rod 300 to prevent twisting and shaking of the wooden building due to an earthquake. The reinforcement bracket 2 is located at a height between the first bracket 101 and the second bracket 103. However, it can be installed in other locations where strength reinforcement is required, and multiple reinforcement brackets can be installed.

[0083] 10(a) is a diagram showing the reinforcing bracket 2. The reinforcing bracket 2 has a "⊂" shape when viewed from the side, and includes a flat upper plate 20, a flat lower plate 24 facing the upper plate 20, and a side plate 22 that connects the upper plate 20 and the lower plate 24 and extends in the height direction. Corner portions 26a connecting the upper plate 20 and the side plate 22 and corner portions 26b connecting the side plate 22 and the lower plate 34 are rounded. The side plate 22 is installed in close contact with the inner surface of the wall 13, and the upper plate 20 and the lower plate 24 extend parallel to each other from the upper and lower ends of the side plate 22 to positions beyond the connecting support rod 300.

[0084] 10(b) is a front view of the side panel 22. The side panel 22 is rectangular. A plurality of screw holes 22a are drilled on both sides of the center line so as to be aligned in, for example, four rows.

[0085] 10(c) is a front view of the upper plate 20 and the lower plate 24. A through-hole 20a is drilled at the location where the connecting support rod 300 passes.

[0086] As shown in FIG. 10(d), a connecting support rod 300 is firmly fastened to the upper and lower plates 20 and 24 of the reinforcing bracket 2 by vertically passing through the through-holes 20a. The fastening unit between the upper plate 20 and the connecting support rod 300 consists of a fastening nut 202 (a hexagonal nut), a washer 204 in contact with the fastening nut 202, and an elastic washer 206 in contact with the other side of the washer 204 and the upper plate 20. The fastening units are symmetrically installed on the upper and lower surfaces of the upper plate 20. The lower plate 24 is also fastened with the same fastening unit. The fastening structure of the present invention has a stronger fastening force than conventional fastening structures. In particular, the bulky elastic washer 206 provides a damping function to absorb earthquake vibrations. The elastic washer 206 is preferably made of rubber. As such, according to the present invention, the elastic washer 206, which functions as a damper, is located at the mid-height, which is the main part of a wooden building, resulting in excellent earthquake resistance.

[0087] A plurality of screws 210 are inserted through the screw holes 22a in the side plate 22 of the reinforcing bracket 2 and planted deeply into the wall 13 for fixing.

[0088] The reinforcing bracket 2 of the present invention is made of steel and is therefore a rigid body as a whole, but the elastic washer 206 is made of an elastic body, so when it is placed at the mid-height of a wooden building, it can not only effectively reinforce the strength of the building but also absorb shear forces due to shaking and twisting, as well as shocks and vibrations through the connecting support rod 300, making it very effective against earthquakes.

[0089] As a result of extensive testing by the inventors, it was found that the reinforcing bracket 2 of the present invention is preferably made of high-strength steel for automotive structures (ATOS; Automotive Structural Steel). ATOS 780, a material that has not undergone hot working, is particularly preferable. ATOS 780 excludes iron and contains, by weight percent, carbon 0.20 or less, silicon 0.40 or less, manganese 2.0 or less, phosphorus 0.03 or less, sulfur 0.005 or less, and a small amount of niobium (Nb). It is suitable for steel plates with a thickness of 3.2 mm to 14.0 mm, has a tensile strength of 780 MPa or more, a yield point of 700 MPa or more, and an elongation rate (%) of 14 or more, slightly lower than the 20% of ATOS 540. JIS SM490 material, which is often used as high-tensile steel, has a tensile strength of 490 MPa, which is about 59% higher than ATOS 780 steel and about 32% higher than SPFH 590Y (SPFH 60Y), which is presented as the strongest material among KSD 3616 automotive workable hot-rolled high-tensile steel sheets.

[0090] As such, ATOS 780 has high strength and excellent cold formability and is used for boom arms, truck and trailer frames. By using ATOS 780 as the reinforcing bracket 2 of the present invention, high strength can be ensured, preventing the bracket from breaking, cracking or twisting due to an earthquake. It goes without saying that ATOS 780 can also be used as the material for the first bracket 101 and second bracket 103 described above.

[0091] Referring again to FIG. 9, a stud 6 is installed adjacent to the connecting support rod 300 between the ceiling portion 15 and the second floor layer 11b for strength reinforcement.

[0092] 9 differs from the previous embodiments in the coupling structure between the first bracket 101, the second bracket 103, and the connecting support rod 300. This will be described with reference to FIG. 12, which shows an enlarged view of the fastening structure between the first bracket 101 and the connecting support rod 300.

[0093] That is, as shown in FIG. 11 , the lower end of the connecting support rod 300 comprises a nut 350, a washer 351 positioned between the underside of the nut 350 and the elastic washer 206, and the elastic washer 206 simultaneously contacting the underside of the washer 351 and the upper surface of the second floor layer 11b. The elastic washer 206 has the same structure as that shown in FIG. 10 . It tightly accommodates the connecting support rod 300 through a hole with an inner diameter approximately equal to the outer diameter of the connecting support rod 300. It has a relatively large size and thickness, and is compressed between the washer 351 and the second floor layer 11b when the nut 350 is tightened. Therefore, the elastic washer 206 functions as an elastic body that is structurally completely integrated with the surrounding solid steel members, thereby reducing damage to wooden buildings in earthquakes. While the above-described embodiment uses a spring washer similar to a flat washer, the elastic washer 206 has a large thickness and a relatively large radius, thereby increasing elastic force.

[0094] The structure of FIG. 11 can be similarly applied to the second bracket 103.

[0095] FIG. 12 shows a multi-story wooden building using the reinforcing bracket 2 of the present invention. The first and second floor structures are identical except for the presence of a first floor layer 11a on the first floor. On each floor, first and second brackets 101, 103 are installed at the top and bottom of the wall 13, with the reinforcing bracket 2 installed between them, creating a repeating structure. In other words, the earthquake-proof structure of the present invention is installed independently on each floor, and on the same floor, multiple brackets are installed around the corners of the wall 13 where necessary to ensure sufficient earthquake resistance. Even in the second-floor structure of FIG. 12, 12 elastic washers 206 are arranged from top to bottom, which is similar to installing elastic bodies throughout the interior of a wooden building, resulting in particularly excellent earthquake resistance.

[0096] In the present invention, the seismic module consisting of the first bracket 101, the second bracket 103, the reinforcing bracket 2, and the connecting support rod 300 is most preferably installed along the periphery of the corner of the wall 13. That is, as shown in part of Figure 11, a first bracket 101 is installed at one corner of the wall 13, and another first bracket 101 is installed at another adjacent corner.

[0097] In this case, the top view of a cutaway corner of the wall 13 in Figure 13 more specifically explains the reinforcement structure of the wall 13. At the corner where the first wall 13a and the second wall 13b are vertically connected, a first bracket 101a is installed on the first wall 13a, and another first bracket 101b is installed on the second wall 13b. At the corner where the first wall 13a and the second wall 13b are respectively connected, the screw p of the first bracket 101a penetrates the inside of the first wall 13a, and the screw p of the first bracket 101b penetrates the inside of the second wall 13b, and the screws p intersect perpendicularly at the corner, so that the corner is doubly reinforced by multiple screws p intersecting perpendicularly. The corners of the building, which are an important part of a wooden building, are reinforced by overlapping in this way, and the second bracket 103 is installed in the same way, and the reinforcing bracket 2 is also installed in the same way, so that the entire corner of the wooden building is supported by a double reinforcement structure and a double elastic structure, thereby improving the durability of the wooden building and providing excellent earthquake resistance.

[0098] Although the preferred embodiments of the present invention have been described above, it is clear that various changes and modifications of the present invention are possible, and the scope of the present invention extends to the same or equivalent range as the claims described below.

Claims

1. A seismic reinforcement structure for a wooden building structure, comprising: a floor section; a wall body connected perpendicularly to the floor section; and a ceiling section connected perpendicularly to the wall body and disposed parallel to the floor section, The earthquake-resistant reinforcement structure further includes a first bracket connecting an upper surface of the floor portion to an inner surface of one side of the wall body, and a second bracket connecting a lower surface of the ceiling portion to an inner surface of the other side of the wall body, the first bracket includes a horizontal portion formed on a flat surface without bending and coupled to an upper surface of the floor portion, a vertical portion formed on a flat surface without bending and coupled to an inner surface of one side of the wall body, and a curved portion formed on a predetermined curvature without bending and connecting one end of the horizontal portion and one end of the vertical portion, the second bracket includes a horizontal portion formed on a flat surface without bending and coupled to an upper surface of the ceiling portion, a vertical portion formed on a flat surface without bending and coupled to an inner surface of the other side of the wall body, and a curved portion formed on a predetermined curvature without bending and connecting one end of the horizontal portion and one end of the vertical portion of the second bracket, The horizontal portion of the first bracket and the horizontal portion of the second bracket are connected by a connecting support rod that extends vertically in a long shape, and in the event of an earthquake, the first bracket and the second bracket, which are formed on flat and curved surfaces without bending, allow the wall to vibrate in the left-right direction. The horizontal portion of the first bracket and the horizontal portion of the second bracket are connected by a connecting support rod, which limits the horizontal vibration of the wall body. An earthquake-resistant reinforcement structure in which a reinforcing bracket is installed between a wall body and a connecting support rod at an intermediate height between a first bracket and a second bracket, the reinforcing bracket having a "⊂" shape when viewed from the side, and including a flat upper plate, a flat lower plate facing the upper plate, and side plates connecting the upper plate and the lower plate and extending in the height direction.

2. 2. The earthquake-resistant reinforcement structure of claim 1, wherein the upper and lower plates of the reinforcement bracket have through-holes through which the connecting support rods pass, and the connecting support rods are fastened to the through-holes on the upper and lower plates by fastening nuts, washers in contact with the fastening nuts, and elastic washers in contact with the other side of the washers and with the upper or lower plate, the elastic washers being made of rubber and having a diameter larger than that of the fastening nuts to provide an elastic body that functions as a damper.

3. 3. The earthquake-resistant reinforcement structure according to claim 2, wherein each of the first bracket and the second bracket is connected to the connecting support rod by a fastening nut, a washer positioned in contact with the fastening nut, and an elastic washer in contact with the other surface of the washer and in contact with the floor or ceiling, thereby providing elastic bodies provided by the elastic washer at the top, bottom, and middle points of the connecting support rod.

4. 3. The earthquake-resistant reinforcement structure according to claim 2, wherein the reinforcement bracket is made of ATOS 780, an automotive structural steel (ATOS) that has not undergone a hot forming process.

5. 2. The earthquake-resistant reinforcement structure according to claim 1, wherein the connecting support rod includes a plurality of threaded rods each having a vertically long length and having male threads formed on its outer surface and continuously arranged in the vertical direction, and a tubular connector having female threads formed on its inner surface and having both ends to which the continuously arranged threaded rods are screwed, and the length and tension of the connecting support rod are adjustable.

6. the connecting support rod vertically penetrates the horizontal portions of the first bracket and the second bracket and the ceiling portion of the building, and has an upper end fixed to the ceiling portion and a lower end inserted into the floor portion of the building; 2. The earthquake-resistant reinforcement structure according to claim 1, further comprising an anchor that is provided in the portion of the floor where the lower end of the connecting support rod is inserted, surrounding the lower end of the connecting support rod and fixing the connecting support rod.

7. The earthquake-resistant reinforcement structure further includes an anchor having a predetermined shape, the anchor including an insertion portion embedded in the floor portion, and a protrusion extending upward from the insertion portion, penetrating the first bracket vertically, and protruding above the floor portion; 2. The earthquake-resistant reinforcement structure according to claim 1, wherein the connecting support rod vertically penetrates the horizontal portion of the second bracket and the ceiling portion of the building, the upper end of the connecting support rod is fixed to the ceiling portion, and the lower end of the connecting support rod is connected to the upper end of the protrusion.

8. the wall body includes a first wall body and a second wall body perpendicularly connected to the first wall body, and a connecting portion between the first wall body and the second wall body forms a corner portion; The first bracket, the second bracket, the reinforcing bracket, and the connecting support rod constitute a first seismic module, which is installed at a corner portion connected to the first wall body; The earthquake-resistant reinforcement structure of claim 2, characterized in that the additional first bracket, second bracket, reinforcing bracket, and connecting support rod form a second earthquake-resistant module, which is installed at the corner portion connected to the second wall body, thereby doubly supporting the corner portion of the wall body by the first earthquake-resistant module and the second earthquake-resistant module and improving earthquake resistance.

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