Bracing structure

Abstract

To provide a braced frame structure in which some of the structural members are made of wood, which has excellent deformation performance and good constructability. [Solution] A frame 90 is formed by horizontally mounting a pair of beams, an upper beam 20A and a lower beam 20B, made of RC or SRC, to a pair of left and right columns 10 made of RC or SRC. Of the four corners 19 of the frame 90, at least two diagonally opposite corners 19 have RC connecting pieces 30 protruding inwards, and both ends of a wooden brace 40 are joined to the two diagonally opposite connecting pieces 30 via metal first fasteners 50, thereby forming a braced frame 100.

Description

Technical Field

[0001] The present invention relates to a brace structure.

Background Art

[0002] In recent years, with the increasing emphasis on reducing the environmental impact and the active efforts in environmental consideration, in the construction field, technological development for effectively utilizing wood materials has been actively carried out. In wooden buildings, hybrid buildings of wood and steel or concrete, etc., various structural members such as beams, columns, walls, and floors are formed of wood materials. Wood materials are lighter than steel frames and concrete, etc., have a high specific strength, are excellent in workability, and in addition, have high heat insulation properties, a humidity control effect, and furthermore, have an aesthetic design produced by natural materials. Due to being natural materials, they have various effects such as a small amount of carbon dioxide emissions and a high reduction effect on the environmental impact load.

[0003] For example, when looking at the structure of a building in which a wooden member is included in the structural member, even when at least a part of the structural member includes a wooden member, a structure having excellent deformation performance is desired.

[0004] Here, in Patent Document 1, a seismic wall structure in which a wooden wall is installed in a structure made of reinforced concrete is proposed. In this seismic wall structure, the wooden wall has side wall recesses and side wall protrusions, and these are engaged with structure-side protrusions and structure-side recesses provided in the structure.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The seismic wall structure described in Patent Document 1 has problems with the deformation performance of the frame because wooden panels are attached to the entire interior of the frame. Furthermore, since the wooden panels are attached by engaging the side wall recesses and side wall protrusions of the wooden wall with the frame-side protrusions and frame-side recesses of the frame, the attachment of the wooden panels to the frame is not easy, and there are problems with constructability.

[0007] This invention has been made in view of the above problems, and aims to provide a braced frame in which a wooden member is applied as part of the structural members, which has excellent deformation performance and good constructability. [Means for solving the problem]

[0008] To achieve the above objective, one embodiment of the brace frame according to the present invention is: The frame is formed by horizontally mounting a pair of upper and lower beams, which are made of RC or SRC, to a pair of columns made of RC or SRC on the left and right. Of the four corners of the aforementioned frame, at least two diagonally opposite corners have reinforced concrete (RC) pieces that are joined to them, The wooden brace is characterized in that both ends are joined to the two pieces to be joined, which are located diagonally opposite each other, via a first metal fastener.

[0009] According to this embodiment, in a frame consisting of a pair of left and right columns and a pair of upper and lower beams made of RC (Reinforced Concrete) or SRC (Steel Reinforced Concrete), at least two diagonally opposite corners of the four corners have reinforced concrete (RC) pieces that are attached to the inside of the two pieces that are attached, and both ends of the wooden brace are joined to the two pieces via metal first fasteners. This allows the wooden brace to be attached to the frame with excellent ease of attachment, and a frame with excellent deformation performance can be formed.

[0010] Here, "the piece to be joined protrudes into the inside of at least two diagonally opposite corners of the four corners of the frame" includes both a form in which the piece to be joined protrudes into two diagonally opposite corners and a form in which the piece to be joined protrudes into all four corners, with two diagonally opposite corners forming one set.

[0011] Furthermore, there are two forms in which the piece to be joined protrudes from the corner: one in which the piece to be joined is fixed to both the beam and the column, and another in which the piece to be joined is fixed to the beam only.

[0012] Furthermore, since the wooden braces are attached to the joined sections of the RC or SRC frame using metal fasteners, the load-bearing capacity of the braced frame can be determined by the bending strength of the metal fasteners and the indentation strength of the wooden braces, thereby guaranteeing high deformation performance of the braced frame.

[0013] Furthermore, other embodiments of the brace frame according to the present invention include: The connecting piece protrudes from the inside of each of the four corners of the frame, The invention is characterized in that, of two pairs of pieces to be joined located at diagonal positions, one wooden brace is joined to one side of one pair of pieces to be joined, and another wooden brace is joined to the other side of the other pair of pieces to be joined.

[0014] According to this embodiment, connecting pieces protrude inward from the four corners of the frame, and one wooden brace is joined to one side of one pair of connecting pieces in one of the two pairs of connecting pieces located at diagonal positions, and another wooden brace is joined to the other side of the other pair of connecting pieces. As a result, the two wooden braces, which are offset and arranged in an X shape when viewed from the front, resist the horizontal forces during an earthquake that act alternately on the frame in the left-right direction, thereby suppressing the displacement of the frame. Alternatively, in the two pairs of connecting pieces located at diagonal positions, two wooden braces may be joined to both sides of one pair of connecting pieces, and no wooden braces may be joined to the other pair of connecting pieces.

[0015] Furthermore, other embodiments of the brace frame according to the present invention include: The connecting piece protrudes from the inside of each of the four corners of the frame, This device is characterized by having one X-shaped wooden brace joined to one side of four diagonally positioned pieces to be joined, and another X-shaped wooden brace joined to the other side of the four pieces to be joined.

[0016] According to this embodiment, X-shaped wooden braces are joined to both one and the other side of four connected pieces located at diagonal positions in two sets, that is, two X-shaped wooden braces are installed inside the frame, thereby further suppressing deformation of the frame caused by horizontal forces during an earthquake.

[0017] Furthermore, in another embodiment of the brace frame according to the present invention, The X-shaped wooden brace is characterized by being formed by joining the ends of two relatively short wooden braces to one relatively long wooden brace via a second metal fastener.

[0018] According to this embodiment, the ends of two relatively short wooden braces are joined to one relatively long wooden brace via metal fasteners, thereby forming an X-shaped wooden brace with excellent manufacturability.

[0019] Furthermore, in another embodiment of the brace frame according to the present invention, The jointed piece is characterized in that it is fixed only to the beam that forms the corner portion.

[0020] According to this aspect, since the joined piece is fixed only to the beam forming the corner, the beam to which the joined piece is fixed and the column to which the joined piece is not fixed can be completely separate members. As a result, for example, when both the column and the beam are made of precast RC or precast SRC, the transportability of both is improved, and the hoisting property of both at the site is improved.

[0021] Further, in another aspect of the brace structure according to the present invention, A structure is formed by horizontally arranging a pair of upper beams and a pair of lower beams, which are RC or SRC beams, with respect to a pair of left and right columns made of RC or SRC. The upper beam has a RC vertical wall on its lower surface. The lower beam has a RC rising wall on its upper surface. A gap extending in the horizontal direction is provided between the vertical wall and the rising wall. Both ends of the wooden brace are joined via metal first fasteners to at least two corner regions at diagonal positions among the corner regions located inside the four corner regions of the structure in the vertical wall and the rising wall.

[0022] According to this aspect, a RC vertical wall is provided on the lower surface of the RC or SRC upper beam, a RC rising wall is provided on the upper surface of the RC or SRC lower beam, a gap extending in the horizontal direction is provided between the vertical wall and the rising wall, and both ends of the wooden brace are joined to two corner regions at diagonal positions among the four corner regions of the vertical wall and the rising wall, so that the rigidity of the brace structure is increased, and the brace structure has excellent sound insulation performance and fire resistance performance in addition to deformation performance.

[0023] In addition, since a RC wall is not provided throughout the inside of the structure and there is a gap between the vertical wall and the rising wall, there is no risk that the rigidity and strength of the wall will become too high, and it becomes easy to adjust the rigidity and strength of the entire building.

[0024] Here, the gap between the hanging wall and the rising wall that extends horizontally (for example, horizontally) has a length that spans between the pair of columns on the left and right, and its vertical width is set to a size such that the hanging wall and the rising wall do not come into contact when the frame deforms during an earthquake.

[0025] Furthermore, in another embodiment of the brace frame according to the present invention, The present invention is characterized in that, of the two pairs of corner regions located at diagonal positions, one wooden brace is joined to one pair of corner regions on one side of the hanging wall and the rising wall, and the other wooden brace is joined to the other pair of corner regions on the other side of the hanging wall and the rising wall.

[0026] According to this embodiment, one wooden brace is joined to one pair of corner regions on one side of the hanging wall and rising wall, and another wooden brace is joined to the other pair of corner regions on the other side of the hanging wall and rising wall. As a result, the two wooden braces, which are offset and arranged in an X shape when viewed from the front, can resist the horizontal forces during an earthquake that act alternately on the frame in the left-right direction, thereby suppressing the displacement of the frame.

[0027] Furthermore, in another embodiment of the brace frame according to the present invention, The structure is characterized in that one X-shaped wooden brace is joined to one side of the four corner regions located at two diagonal positions, and another X-shaped wooden brace is joined to the other side.

[0028] According to this embodiment, X-shaped wooden braces are joined to both one and the other side of the four corner regions located at two diagonal positions, that is, two X-shaped wooden braces are installed inside the frame, thereby further suppressing deformation of the frame caused by horizontal forces during an earthquake.

[0029] Furthermore, in another embodiment of the brace frame according to the present invention, The X-shaped wooden brace is characterized by being formed by joining the ends of two relatively short wooden braces to one relatively long wooden brace via a second metal fastener.

[0030] According to this embodiment, the ends of two relatively short wooden braces are joined to one relatively long wooden brace via metal fasteners, thereby forming an X-shaped wooden brace with excellent manufacturability.

[0031] Furthermore, in another embodiment of the brace frame according to the present invention, The column, beam, and joined piece, or the column, beam, hanging wall, and rising wall, are characterized in that they are made of precast reinforced concrete or precast steel-reinforced concrete.

[0032] According to this embodiment, whether the frame has connecting pieces at its corners or the frame has a hanging wall and a rising wall, the fact that the components of the braced frame are made of precast reinforced concrete or precast steel-reinforced concrete improves the constructability of the braced frame on site.

[0033] Furthermore, in another embodiment of the brace frame according to the present invention, The beam is equipped with precast joints at both ends. The column is provided with cantilevered main reinforcement extending from its end face, The aforementioned cantilevered main reinforcement passes through the sleeve provided in the precast joint, and the precast joint is placed on the end face of the column.

[0034] According to this embodiment, the cantilevered main reinforcement extending from the end face of the column passes through the sleeves of the precast joints at both ends of the beam, and the precast joints are placed on the end face of the column. This makes it possible to form a braced frame that offers excellent on-site constructability and high assembly accuracy at the joint between the column and the beam.

[0035] Furthermore, in another embodiment of the brace frame according to the present invention, The first fastener and the second fastener are, It is characterized by being either a metal rod for GIR joints or a bolt and nut for tension bolt joints.

[0036] According to this embodiment, by using either a metal rod for GIR (Glued in Rod) joining or a bolt and nut for tension bolt joining as the fastener, the joining of the piece to be joined with a wooden brace, or the joining of a long wooden brace with a short wooden brace, can be firmly joined with as few joining points as possible. [Effects of the Invention]

[0037] As can be understood from the above explanation, the brace frame of the present invention provides a brace frame in which a wooden member is applied to some of the constituent members, which has excellent deformation performance and good constructability. [Brief explanation of the drawing]

[0038] [Figure 1] This is a front view of an example of a brace frame according to the embodiment. [Figure 2] This is a view along the line II-II in Figure 1. [Figure 3] This is a front view of another example of the brace frame according to the embodiment. [Figure 4] This is a front view of yet another example of the brace frame according to the embodiment. [Figure 5] This is a view along the VV arrow in Figure 4. [Figure 6] This is a front view of yet another example of the brace frame according to the embodiment. [Figure 7] This is a view along the line VII-VII in Figure 6. [Figure 8] This is a perspective view of yet another example of the bracing structure according to the embodiment. [Modes for carrying out the invention]

[0039] The brace frame according to the embodiment will be described below with reference to the attached drawings. In this specification and drawings, substantially identical components may be denoted by the same reference numerals to avoid redundant explanations.

[0040] [Brace frame according to the embodiment] An example of a braced frame structure according to the embodiment will be described with reference to Figures 1 to 8. Here, Figure 1 is a front view of an example of a braced frame structure according to the embodiment, and Figure 2 is a view taken along arrow II-II in Figure 1. Figures 3 and 4 are both front views of other examples of the braced frame structure according to the embodiment, and Figure 5 is a view taken along arrow VV in Figure 4. Furthermore, Figure 6 is a front view of yet another example of the braced frame structure according to the embodiment, Figure 7 is a view taken along arrow VII-VII in Figure 6, and Figure 8 is a perspective view of yet another example of the braced frame structure according to the embodiment. Note that, with the exception of the cantilevered main reinforcement of the precast column shown in Figure 8, the illustration of the reinforcement bars in each RC member is omitted in each figure.

[0041] The braced frame 100 shown in Figure 1 is formed by attaching two X-shaped wooden braces 40 to a rectangular frame 90 which is created by horizontally mounting a pair of reinforced concrete (RC) beams, an upper beam 20A and a lower beam 20B, to a pair of left and right RC columns 10A and 10B. Here, the columns 10A and 10B, as well as the upper beam 20A and lower beam 20B, may all be made of steel-reinforced concrete (SRC).

[0042] In this illustrated example, two X-shaped wooden braces 40 are installed inside the frame 90, but it is also possible to have a configuration with only one X-shaped wooden brace 40.

[0043] At the four corners 19 of the rectangular frame-shaped structure 90, two end faces 33 and 35 of the reinforced concrete (RC) joined piece 30 are fixed to the lower surface 22 of the upper beam 20A, the upper surface 24 of the lower beam 20B, and the side surface 17 of the column 10.

[0044] Each piece to be joined 30 has two wide surfaces, one surface 31 and the other surface 32. As shown in Figures 1 and 2, one X-shaped wooden brace 40 is joined to one surface 31 of four pieces to be joined 30 located at two diagonal positions, and another X-shaped wooden brace 40 is joined to the other surface 32 of the four pieces to be joined 30.

[0045] For example, when the frame 90 is constructed by pouring concrete on site, in the construction of the connecting piece 30 that is joined to the column 10 and beam 20, as shown in Figure 2, the connecting piece 30 is constructed with multiple high nuts 53 embedded that penetrate across one surface 31 and the other surface 32.

[0046] Furthermore, if the structural elements other than the piece to be joined, namely the beam 20 and column 10, are precast RC members or precast SRC members, the column 10 and beam 20 are transported to the site and assembled. After installing post-installed anchors on the lower surface 22 and upper surface 24 of the beam 20 and the side surface 17 of the column 10, the RC piece to be joined is installed on-site, embedding the post-installed anchors, and the installation is carried out with multiple high nuts 53 embedded in the same manner.

[0047] The X-shaped wooden brace 40 is formed by joining the ends of two relatively short wooden braces 43 to one relatively long wooden brace 41 via a second metal fastener 55.

[0048] The long wooden braces 41 and short wooden braces 43 that form the wooden brace 40 can be made of laminated timber, solid wood, structural plywood, cross-laminated timber (CLT), nail-laminated timber (NLT), dowel-laminated timber (DLT), laminated veneer lumber (LVL), etc.

[0049] Here, a metal rod for GIR jointing or a bolt and nut for tension bolt jointing can be applied as the second fastener 55, and the wooden brace 40 is formed by GIR jointing or tension bolt jointing. Other fasteners such as screws, nails, and staples other than such metal rods and bolt and nuts may be applied as the second fastener 55, but by applying a metal rod for GIR jointing or a bolt and nut for tension bolt jointing, the joint strength per location can be increased, leading to a reduction in the number of fasteners.

[0050] Each end of the two X-shaped wooden braces 40 is positioned on one side 31 and the other side 32 of the four pieces to be joined 30 located at the corner 19. The two X-shaped wooden braces 40 are then fastened to the one side 31 and the other side 32 of the pieces to be joined 30 by inserting, for example, a fully threaded bolt 50 (an example of a first metal fastener) into the through-hole 48 and counterbore groove 47 of both wooden braces 40 from both sides and tightening it onto the tall nut 53 (tall nut + bolt joint).

[0051] In addition to the mounting method shown in the illustration, the two X-shaped wooden braces 40 may also be fastened to the piece to be joined 30 by providing through holes in the piece to be joined 30, positioning the corresponding through holes 48 of the two X-shaped wooden braces 40 in the openings where the through holes face one surface 31 and the other surface 32, inserting double-threaded bolts (another example of the first metal fastener) to position the screws in the counterbore grooves 47 of both wooden braces 40, inserting washers 52 over both screws, and tightening with nuts 51 (through-bolt joint).

[0052] In the illustrated example of the braced frame 100, in a rectangular frame-shaped frame 90 consisting of a pair of left and right columns 10 and a pair of upper and lower beams 20 made of reinforced concrete, reinforced concrete connecting pieces 30 protrude inward at diagonal positions of the four corners 19, and both ends of the X-shaped wooden brace 40 are joined to each connecting piece 30 via a first metal fastener 50. This allows the wooden brace 40 to be attached to the frame 90 with excellent ease of attachment, and a braced frame 100 with excellent deformation performance can be formed.

[0053] Next, with reference to Figure 3, another example of the brace frame according to the embodiment will be described.

[0054] The brace frame 100A in the illustrated example differs from the brace frame 100 in that one end face 33 of the joined piece 30A is fixed only to the lower surface 22 of the upper beam 20A or the upper surface 24 of the lower beam 20B, and is not fixed to the side surface 17 of the column 10.

[0055] Since the piece to be joined 30 is fixed only to the beam 20 that forms the corner 19, the beam 20 to which the piece to be joined 30 is fixed and the column 10 to which the piece to be joined 30 is not fixed can be treated as completely separate members. For example, when both the column 10 and the beam 20 are made of precast reinforced concrete or precast steel-reinforced concrete, the transportability of both is improved, and the lifting and turning of both at the site is improved.

[0056] Furthermore, the brace frame 100A also allows the wooden brace 40 to be attached to the frame 90 with excellent attachment properties, thereby forming a brace frame 100 with excellent deformation performance.

[0057] Next, with reference to Figures 4 and 5, yet another example of a brace frame according to the embodiment will be described.

[0058] The brace frame 100B shown in the illustration differs from the brace frames 100 and 100A in that, of the two pairs of connected pieces 30 located at diagonal positions, one linear wooden brace 45 is joined to one side 31 of one pair of connected pieces 30, and another linear wooden brace 45 is joined to the other side 32 of the other pair of connected pieces 30.

[0059] As shown in Figure 5, multiple insert nuts 57 are embedded in the piece to be joined 30, the ends of the wooden brace 45 are positioned on one side 31 and the other side 32 of the piece to be joined 30, and multiple through holes 48 provided in the wooden brace 45 are positioned on the corresponding insert nuts 57. A bolt 50A (another example of the first fastener) is inserted through the mutually communicating counterbore grooves 47, through holes 48 and insert nuts 57, and tightened with a nut 51 via a washer 52, thereby fastening the straight wooden brace 45 to the piece to be joined 30.

[0060] The brace frame 100B also allows the wooden brace 45 to be attached to the frame 90 with excellent attachment properties, thereby forming a brace frame 100B with excellent deformation performance.

[0061] Next, with reference to Figures 6 and 7, yet another example of a brace frame according to the embodiment will be described.

[0062] The braced frame 100C shown in the illustration differs from the braced frame 100, etc., in that the upper beam 20A has an RC (reinforced concrete) hanging wall 60 on its lower surface 22, and the lower beam 20B has an RC (reinforced concrete) rising wall 70 on its upper surface 24, and one X-shaped wooden brace 40 is joined to one pair of corner regions 65,75 on one surface 61,71 of the hanging wall 60 and the rising wall 70, and another X-shaped wooden brace 40 is joined to the other pair of corner regions 65,75 on the other surface 62,72 of the hanging wall 60 and the rising wall 70.

[0063] A gap G3 extending in the lateral direction (for example, horizontally) is provided between the lower surface 63 of the hanging wall 60 and the upper surface 73 of the rising wall 70, and a gap G2 is provided between the side surfaces 17 of the left and right columns 10 and the hanging wall 60 and rising wall 70.

[0064] Multiple insert nuts 53 are embedded in both the hanging wall 60 and the rising wall 70, and openings for long nuts 53 face one side 61, 72 and the other side 62, 72 of both the hanging wall 60 and the rising wall 70. By aligning the corresponding through holes 48 of the wooden brace 40 with the openings of the long nuts 53 exposed on both the hanging wall 60 and the rising wall 70, and inserting bolts 50B from both sides into the mutually communicating counterbore grooves 47, through holes 48 and long nuts 53 and tightening them, the brace frame 100C is formed.

[0065] Here, the illustrated example has an X-shaped wooden brace 40, but it may also be installed in a configuration in which two straight wooden braces intersect.

[0066] In the braced frame 100C, the ends of the X-shaped wooden braces 40 are joined to the corner regions 65 and 75 located inside the four corners of the frame 90 in the hanging wall 60 and the rising wall 70. This increases the rigidity of the braced frame 100C, resulting in a braced frame with excellent deformation performance, as well as superior sound insulation and fire resistance.

[0067] Furthermore, since there are no reinforced concrete walls throughout the entire interior of the frame 90, and there is a gap G3 between the hanging wall 60 and the rising wall 70, there is no risk of the wall rigidity or load-bearing capacity becoming too high, making it easier to adjust the rigidity and load-bearing capacity of the entire building.

[0068] The brace frame 100C also allows the wooden brace 40 to be attached to the frame 90 with excellent attachment properties, thereby forming a brace frame 100C with excellent deformation performance.

[0069] In the illustrated example, the braced frame 100C has wooden braces 40 joined to the hanging wall 60 and the rising wall 70. However, instead of the hanging wall 60 and the rising wall 70, RC wing walls (not shown) may be provided on the sides 17 of the left and right columns 10, and the ends of the wooden braces 40 may be joined to both wing walls.

[0070] Next, with reference to Figure 8, yet another example of a brace frame according to the embodiment will be described.

[0071] The braced frame 100D shown in the illustration differs from the braced frame 100, etc., in that all of its structural components, such as the left and right columns 10, the upper and lower beams 20, and the connecting pieces 30 at the corners, are made of precast reinforced concrete, and the beams 20 are equipped with joints 25 (precast joints) at both ends.

[0072] Multiple sleeves 26 are embedded in the joint 25, and the main reinforcement bars of the column (precast column) protrude upward from the upper surface 12 of the column 10 (protruding main reinforcement bars 15).

[0073] Figure 8 shows a state in which joints 25 (precast joints) at both ends of the lower beam 20B (precast beam) on the upper floor are installed in relation to the column 10 (precast column) on the lower floor, and a brace frame 100D is formed above them.

[0074] The cantilevered main reinforcement bars 15 of the lower floor column 10 penetrate the sleeves 26 of the joints 25 at both ends of the upper floor lower beam 20B, with their upper parts further protruding from the upper surface of the joints 25. Each column 10 has the lower part of the cantilevered main reinforcement bars 15 embedded inside, and is equipped with sleeves (not shown) below the cantilevered main reinforcement bars 15. The lower surface 14 of the upper floor column 10 is placed on top of the joints 25 by inserting the cantilevered main reinforcement bars 15 that further protrude from the upper surface of the joints 25 into sleeves (not shown) located below the upper floor column 10.

[0075] Furthermore, by inserting multiple cantilevered main reinforcement bars 15 extending from the upper surface 12 of the upper floor column 10 into each sleeve 26 of the joint 25, and placing the joints 25 at both ends of the upper beam 20A on the upper surface 12 of the column 10, a frame 90 is formed in which all components are made of precast reinforced concrete.

[0076] The ends of two X-shaped wooden braces 40 are positioned on one side 31 and the other side 32 of the joined piece 30 at each corner 19 of the frame 90, and fastened with a plurality of first fasteners 50 to form a braced frame 100D.

[0077] The brace frame 100D also allows the wooden brace 40 to be attached to the frame 90 with excellent attachment properties, thereby forming a brace frame 100D with excellent deformation performance.

[0078] Other embodiments may be used in which other components are combined with the configurations listed in the above embodiments, and the present invention is not limited in any way to the configurations shown herein. In this regard, modifications can be made without departing from the spirit of the present invention, and can be appropriately determined according to the application form. [Explanation of Symbols]

[0079] 10,10A,10B:Column 12: End surface (top surface) 14: End surface (bottom surface) 15: Protruding main reinforcement 17: Side view 19: Corner section 20: Beam 20A: Upper beam (beam) 20B: Lower beam (beam) 22: Bottom surface 24:Top surface 25: Joints (precast joints) 26: Sleeves 27: End face 30,30A: Piece to be joined 31: One side 32: Other side 33,35: End face 40: X-shaped wooden brace (wooden brace) 41: Long wooden braces 43: Short wooden brace 47: Counterbore groove 48: Through hole 50, 50A, 50B: First fastener (bolt) 51: Nut 52: Washer 53: High Nut 55: Second fastener (metal rod for GIR joint) 57: Insert Nut 60: Hanging wall 61: One side 62: Other side 63: Bottom surface 65: Corner region 70: Rising wall 71: One side 72: Other side 73:Top surface 75: Corner region 90: Frame 100, 100A, 100B, 100C, 100D: Brace frame G1, G2, G3: Gap

Claims

1. The frame is formed by horizontally mounting a pair of upper and lower beams, both made of reinforced concrete (RC) or steel-reinforced concrete (SRC), to a pair of left and right columns made of RC or SRC. Of the four corners of the aforementioned frame, at least two diagonally opposite corners have reinforced concrete connecting pieces protruding from the inside of each. A brace frame characterized in that both ends of a wooden brace are joined to two pieces to be joined at diagonal positions via a first metal fastener.

2. The connecting piece protrudes from the inside of each of the four corners of the frame, The brace frame according to claim 1, characterized in that, of two pairs of joined pieces located at diagonal positions, one wooden brace is joined to one side of one pair of joined pieces, and another wooden brace is joined to the other side of the other pair of joined pieces.

3. The connecting piece protrudes from the inside of each of the four corners of the frame, The brace frame according to claim 1, characterized in that one X-shaped wooden brace is joined to one side of four pieces to be joined at diagonal positions in two sets, and another X-shaped wooden brace is joined to the other side of the four pieces to be joined.

4. The brace frame according to claim 3, characterized in that the X-shaped wooden brace is formed by joining the ends of two relatively short wooden braces to one relatively long wooden brace via a second metal fastener.

5. The brace frame according to claim 1, characterized in that the joined piece is fixed only to the beam that forms the corner portion.

6. A frame is formed by horizontally mounting a pair of upper and lower beams, which are made of reinforced concrete (RC) or steel-reinforced concrete (SRC), to a pair of columns made of RC or SRC on the left and right sides. The aforementioned upper beam is fitted with an RC (reinforced concrete) hanging wall on its lower surface. The lower beam is fitted with a reinforced concrete rising wall on its upper surface. A gap extending laterally is provided between the aforementioned hanging wall and the aforementioned rising wall. A braced frame characterized in that, among the corner regions located inside the four corners of the frame in the hanging wall and the rising wall, at least two corner regions located at diagonal positions are joined at both ends of a wooden brace via a first metal fastener.

7. The brace frame according to claim 6, characterized in that, of two pairs of corner regions located at diagonal positions, one wooden brace is joined to one pair of corner regions on one face of the hanging wall and the rising wall, and another wooden brace is joined to the other pair of corner regions on the other face of the hanging wall and the rising wall.

8. The brace frame according to claim 6, characterized in that one X-shaped wooden brace is joined to one side of four corner regions located at two diagonal positions, and another X-shaped wooden brace is joined to the other side.

9. The brace frame according to claim 8, characterized in that the X-shaped wooden brace is formed by joining the ends of two relatively short wooden braces to one relatively long wooden brace via a second metal fastener.

10. The brace frame according to claim 1 or 6, characterized in that the column, the beam and the joined piece, or the column, the beam and the hanging wall and the rising wall are made of precast reinforced concrete or precast steel reinforced concrete.

11. The beam is equipped with precast joints at both ends. The column is provided with cantilevered main reinforcement extending from its end face, The brace frame according to claim 10, characterized in that the cantilevered main reinforcement passes through the sleeve provided in the precast joint, and the precast joint is placed on the end face of the column.

12. The first fastener and the second fastener are, A brace frame according to any one of claims 1, 4, 6, or 9, characterized in that it is either a metal rod for GIR joining or a bolt and nut for tension bolt joining.

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