JP5501919B2 - Reinforcement structure for joints of wooden buildings - Google Patents

Description

  The present invention can secure sufficient toughness in the joint part for large-scale deformation when reinforcing the joint part of a wooden building, and also for small-scale deformation, The present invention relates to a joint reinforcement structure for a wooden building capable of increasing the initial rigidity and maximum proof stress of the joint.

  A reinforcing hardware made of a flat steel material is usually used for a joint portion of a wooden building where a vertically oriented wooden structure material and a horizontally oriented wooden structure material are joined. Reinforcement hardware made of this type of flat steel material has high initial rigidity and high maximum strength, but is inferior in energy absorption performance, and exhibits a great reinforcement function within a small deformation range. However, in the case of large-scale deformation, it can hardly function.

  Reinforcing members with excellent energy absorption performance that can sufficiently exert a reinforcing function against large-scale deformation are known. For example, the “joint damper” of Patent Document 1 is a joint damper that is fixed to a joint portion of a wooden frame structure, and is fixed to a first hard plate and a horizontal member having a pillar fixing portion that is fixed to a column. And a viscoelastic material of a sheet bonded and laminated between the first hard plate and the second hard plate, and the viscoelastic material has a shear elastic modulus G of 200 to 1000 kPa, tan δ. 0.3 or more, the maximum shear deformation strain is 300% to 600%, the thickness of the viscoelastic material sheet is d (cm), and the remote end portion of the viscoelastic material from the column contact surface of the column fixing portion L / 90 ≦ d ≦ L / 45 where L (cm) is the shorter of the distance from the horizontal member abutting surface of the horizontal member fixing portion to the remote end of the viscoelastic material This is a joint damper.

  The “damping structure and damping method for building” of Patent Document 2 differs depending on whether an external force acts in a predetermined direction or an external force acts in the opposite direction on the inner side of the frame constituting the shaft assembly. A damper that generates a large amount of resistance is attached. This damper is bridged between the vertical and horizontal members that make up the frame, and when the frame is deformed in a direction that reduces the joint angle, a resistance force is generated to absorb the predetermined vibration energy. On the other hand, when the frame body is deformed in the direction in which the joining angle increases, it is attached in such a direction that a resistance force smaller than the resistance force is generated. Such a structure can also be applied to the opening.

  The "joint reinforcement tool" of Patent Document 3 is composed of a joint reinforcement tool that is attached to a joint part that joins a horizontal member and a vertical member substantially at right angles, and is composed of attachment parts on both sides and a connecting part that connects these attachment parts. The deformed portion provided in the connecting portion is formed in a bellows shape by alternately bending along a plurality of bending lines extending radially from the inner corner of the joint portion, and the height of each bent portion. It is configured so that the thickness gradually increases from the side closer to the corner toward the outside. The width of the deformable portion may be narrowed to concentrate deformation due to external force on the deformable portion, or the brace may be taken between the pair of joint reinforcing tools that are installed adjacent to each other.

JP 2005-220614 A JP 2008-144362 A JP 2010-031630 A

  The reinforcing members of these patent documents exhibit an energy absorbing action according to the deformation on the premise that the deformation always follows the deformation occurring in the joint portion, so that it is sufficient only for large-scale deformation. Although the reinforcing effect can be obtained, there is a problem that the initial rigidity and the maximum proof stress are low and a sufficient reinforcing function cannot be obtained for small-scale deformation.

  The present invention was devised in view of the above-described conventional problems, and when reinforcing a joint part of a wooden building, it is possible to ensure sufficient toughness in the joint part against large-scale deformation. An object of the present invention is to provide a joint reinforcement structure for a wooden building that is capable of increasing the initial rigidity and maximum proof strength of the joint even when it is small in deformation.

  The structure for reinforcing a joint part of a wooden building according to the present invention is a structure for reinforcing a joint part of a wooden building in which a joint part obtained by joining a vertically oriented wooden structure material and a horizontally oriented wooden structure material is reinforced with a reinforcement hardware. A first mounting portion that is attached to each of the vertical and horizontal wooden structure members, and the first and second mounting portions that are positioned at the above-described joint portions of the vertical and horizontal wooden structure materials. A first reinforcing hardware having a flat surface portion that resists small deformation of the joint portion, a second attachment portion attached to each of the vertically and horizontally oriented wooden structure materials, and between the second attachment portions, A second reinforcing hardware having a bent plate portion that is provided at the above-mentioned joint portion of the vertically and horizontally oriented wooden structure material, and has a bent plate portion that expands and contracts to absorb deformation energy as the deformation of the joint portion increases. , These first and second reinforcement hardware Arranged in columns, characterized in that provided in the Joint portion.

  With the joint reinforcement structure for a wooden building according to the present invention, it is possible to ensure sufficient toughness in the joint against large-scale deformation, and also against small-scale deformation. The initial rigidity and maximum proof stress of the mouth can be increased.

It is explanatory drawing explaining the example of the joint part to which the joint part reinforcement structure of the wooden building concerning this invention is applied. It is a perspective view which shows suitable one Embodiment of the joint part reinforcement structure of the wooden building concerning this invention. It is a perspective view of the 1st reinforcement hardware applied to the joint part reinforcement structure of the wooden building shown in FIG. It is a perspective view of the 2nd reinforcement hardware applied to the joint part reinforcement structure of the wooden building shown in FIG. It is a figure for demonstrating the 2nd reinforcement metal fitting shown in FIG. 4, Comprising: (a) is front view, (b) is side view, (c) is planar view, (d) is dd. (E) is a figure which shows an ee line arrow view, respectively. It is explanatory drawing for demonstrating the buffering and absorption effect | action of the energy by the 2nd reinforcement metal fitting shown in FIG. It is a sectional side view which shows the juxtaposition state of the 1st and 2nd reinforcement metal fitting in the joint part reinforcement structure of the wooden building shown in FIG. It is a sectional side view which shows the juxtaposed state different from the juxtaposed state shown in FIG. It is a perspective view which shows the other juxtaposed state different from the juxtaposed state shown in FIG. FIG. 9 is a plan sectional view showing still another side-by-side state different from the side-by-side state shown in FIG. 7.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a joint reinforcing structure for a wooden building according to the present invention will be described below in detail with reference to the accompanying drawings. In general, in wooden buildings, as shown in FIG. 1 (A), a vertically-oriented wooden structure material 50 such as a pillar material and a horizontally-oriented wooden structure material 51 such as a base or a beam material are joined to each other in a vertical and horizontal manner. Part 52 is formed. Further, as shown in FIG. 1B, the horizontal beam spanned between the column members is also a horizontally-oriented wooden structure material 51, and the joint portion 52 is also provided at the position where the horizontal beam is butted against the column member. It is formed. In the joint portion 52, the vertical and horizontal wooden structure members 50 and 51 are arranged such that the vertical side surface 50a of the vertical wooden structure member 50 and the horizontal plane 51a of the horizontal wooden structure member 51 face each other in a substantially perpendicular relationship. Are joined.

  If the joint part reinforcement structure of the wooden building concerning this embodiment is the joint part 52 formed by joining the vertical wooden structure material 50 and the horizontal wooden structure material 51 as described above, how The present invention can also be applied to a proper joint 52. The joint 52 is reinforced by reinforcing hardware 53, 1 as described below.

  The first reinforcing hardware 53 and the second reinforcing hardware 1 are used for the joint reinforcing structure of the wooden building according to the present embodiment. The first reinforcing metal 53 is made of a metal such as stainless steel. As shown in FIG. 2 and a perspective view thereof in FIG. 3, the vertical side surface 50a of the vertical wooden structure 50 and the horizontal wooden structure are shown. The first mounting portions 54 respectively mounted on the horizontal plane 51a of the 51 and between the first mounting portions 54 are positioned between the vertical side surface 50a and the horizontal plane 51a of the vertical and horizontal wooden structural members 50, 51. And a flat surface portion 55 provided.

  In the present embodiment, the flat surface portion 55 of the first reinforcing metal piece 53 is formed in a fan shape in which the outer peripheral edge and the inner peripheral edge form an arch shape. By forming the inner peripheral edge in an arch shape, interference with the corner of the joint 52 is prevented. A first mounting portion 54 is integrally formed on the flat surface portion 55 by being bent at a substantially right angle from the lower end edge and the side end edge in the same direction.

  The first attachment portion 54 at the lower end edge is in contact with the horizontal plane 51 a of the horizontal wooden structure material 51, and the first attachment portion 54 at the side edge is in contact with the vertical side surface 50 a of the vertical wooden structure material 50. The first mounting portion 54 is formed with a screw hole 57 through which a screw 56 screwed into the wooden structural members 50 and 51 is passed. In addition, a screw hole 59 for fixing a brace 58 attached to the flat surface portion 55 is formed in the flat surface portion 55 as necessary.

  The first reinforcing hardware 53 causes the first mounting portion 54 to contact the vertical side surface 50a and the horizontal plane surface 51a of the vertical and horizontal wooden structure members 50 and 51, respectively, and the screw 56 is connected to the wooden structure members 50 and 51 through the screw holes 57. It is attached to the joint portion 52 by being screwed into. In the first reinforcing metal 53, a metal flat surface portion 55 is positioned at the joint portion 52, and the flat surface portion 55 resists small deformation occurring in the joint portion 52.

  The second reinforcing hardware 1 is shown in an attached state in FIG. 2, a perspective view in FIG. 4, a detailed configuration in FIG. 5, and an operation mode in FIG. 6. The second reinforcing hardware 1 is formed from a metal plate such as stainless steel. The second reinforcing hardware 1 is bent at a substantially right angle to the outer side of the flat plate portion 5 and the bent plate portion 4 formed in a bellows shape, the pair of flat plate portions 5 formed on both sides of the bent plate portion 4. A second attachment portion 6 formed and attached to the vertical side surface 50a of the vertical wooden structure member 50 and the horizontal plane 51a of the horizontal wooden structure member 51 in order to install the second reinforcing hardware 1 in the joint portion 52; These are integrally formed. The brace 58 may be attached to the second reinforcing hardware 1.

  The bent plate portion 4 is formed by bending a plate material into a wave shape in which a peak portion 4a and a valley portion 4b are repeated so that a cross section has a sinusoidal shape, for example. By bending in this way, the bent plate portion 4 has a bellows shape and can be expanded and contracted in the direction in which the peak portions 4a and the valley portions 4b are arranged. The elastically deformable bent plate portion 4 hardly expands or contracts even when a load of a predetermined load or less is applied in the expansion and contraction direction, and expands and contracts when a load exceeding the predetermined load is input. An energy absorbing action that draws a hysteresis loop in the plastic region is exhibited to absorb the input load. The predetermined load is appropriately set in design.

  In the illustrated example, the bent plate portion 4 includes a valley portion 4b located at the center and two peak portions 4a sandwiching the valley portion 4b from both sides along five bending lines x and y. It is formed in a wave shape. Of the five bending lines x and y, the three bending lines x at the center are set to extend in the radial direction from the corners P of the vertically and horizontally oriented wooden structural members 50 and 51 as base points. The two outer bend lines y are set so as to extend in the radial direction from a point Q far from the corner P as a base point.

  In addition, the bent plate portion 4 is formed in an arch shape in which the inner edge 4c facing the joint portion 52 is convex toward the outer corner, and the outer edge 4d on the opposite side is convex toward the inner corner. Thus, the width is gradually reduced toward the center in the expansion / contraction direction (valley 4b). Since the center in the expansion / contraction direction is formed narrow, not only the peak portions 4a on both sides but also the deformability in the valley portions 4b is enhanced, and the expansion / contraction performance of the bent plate portion 4 is improved.

  A pair of flat plate portions 5 is formed on both ends of the bent plate portion 4 in the direction of expansion and contraction. Each flat plate portion 5 has an appropriate width dimension, and extends from the bent plate portion 4 in the length direction of the wooden structural members 50 and 51 toward the outer corners, whereby the length of the wooden structural members 50 and 51 is increased. The side edge 5a along the direction is formed long. Thus, by forming the length dimension of the side edge portion 5a of the flat plate portion 5 longer in the length direction of the wooden structural members 50 and 51, the bent plate portion 4 and the wooden structural member 50 by the flat plate portion 5 are formed. , 51 to ensure effective load transmission with the second mounting portion 6 joined to the first mounting portion 6.

  The inner edge 5b facing the corner of each flat plate portion 5 is formed in an arch shape in series with the inner edge 4c of the bent plate portion 4. Accordingly, a fan-shaped gap C is formed between the second reinforcing hardware 1 and the corner corner P of the joint portion 52.

  Each flat plate portion 5 is formed with a pair of second mounting portions 6 continuously from the side edge portions 5a and over the entire length of the side edge portions 5a. In other words, the second attachment portion 6 is integrally formed at both ends of the bending plate portion 4 in the expansion / contraction direction via the flat plate portion 5. Each of the second mounting portions 6 is bent so as to rise in an L shape from the flat plate portion 5 so as to face each of the two wooden structural members 50 and 51 so as to face each other.

  In the present embodiment, in particular, the pair of second mounting portions 6 are both bent to either the front surface 5c side or the back surface 5d side with respect to the flat plate portion 5 so as to face each other. Formed. That is, both the second attachment portions 6 are bent in the same direction.

  Thereby, compared with the case where it bends in the opposite direction, the 2nd reinforcement hardware 1 resists the shearing action of the horizontal direction which crosses the bending board part 4 effectively in both directions, and is a wooden structure. A load input from the materials 50 and 51 to the second mounting portion 6 can be efficiently transmitted to the flat plate portion 5 and the bent plate portion 4. In the example of illustration, although the 2nd attachment part 6 is formed with the substantially square-shaped external outline, you may form in what kind of form according to the space of an attachment location.

  The second attachment portion 6 is formed with a plurality of screw holes 8 for inserting screws 7 for attaching the second attachment portion 6 to the wooden structural members 50 and 51. By attaching the second attachment portion 6 to the wooden structural members 50 and 51 with the screws 7 inserted into the screw holes 8, the second reinforcing hardware 1 is installed in the joint portion 52 between the two wooden structural members 50 and 51. The joint portion 52 is reinforced while the wooden structural members 50 and 51 are connected to each other.

  Further, in the present embodiment, the bent plate portion 4 is positioned between the pair of second mounting portions 6 while approaching either the front surface 5c side or the back surface 5d side of the flat plate portion 5. As described above, the flat plate portion 5 is formed by being bent toward the bending side of the second mounting portion 6.

  If it demonstrates with reference to FIG. 5, when each 2nd attaching part 6 is bent and formed in the surface 5c side of the flat board part 5, the wavy peak part 4a and trough part 4b of the bent board part 4 will be flat. With the plate surface of the plate portion 5 as a reference, it is not bent toward the back surface 5d side, but only bent toward the front surface 5c side.

  By forming in this way, all the crests 4a and troughs 4b of the bent plate part 4 are brought closer to the surface 5c side of the flat plate part 5 with respect to the back surface 5d of the flat plate part 5, and a pair of second attachments Located between the parts 6.

  In the present embodiment, the bent plate portion 4 is formed by moving toward the surface 5c side of the flat plate portion 5, so that the bent plate portion 4 is approximately outward from the surface 5c side with respect to the flat plate portion 5 during compression deformation. 6 so that the load F transmitted from the flat plate portion 5 is biased toward the bellows end (indicated by S in the figure) as shown in FIG. 6A. Composed. In addition, the bent plate portion 4 and a space for deforming the bent plate portion 4 are secured between the second attachment portions 6 by being formed so as to be positioned between the second attachment portions 6.

  The second reinforcement hardware 1 is formed in such a manner that the bent plate portion 4 is sandwiched between the wooden structure materials 50 and 51 by joining the pair of second attachment portions 6 to the two wooden structure materials 50 and 51, respectively. Installed in the mouth 52. When the building is repeatedly shaken by the action of an external force such as an earthquake, and a load is applied between the wooden structural members 50 and 51 that causes an angle change to open or close the corner, A part is input from the second attachment portion 6 to the second reinforcement hardware 1.

  When an input load that greatly deforms the joint portion 52 is input, the second reinforcing hardware 1 is elastically deformed by the bent plate portion 4 and absorbs this against the input load by an energy absorption action that draws an elastic-plastic hysteresis loop. However, it is possible to reinforce the joint portion 52.

  At this time, when the bent plate portion 4 is compressed and deformed, the bent plate portion 4 is deformed so as to protrude outward on the surface 5 c side of the flat plate portion 5. Further, the bent plate portion 4 is stretched and deformed in a space between the pair of second mounting portions 6 facing each other.

  Further, during this deformation, the load F input from the second mounting portion 6 to the bent plate portion 4 via the flat plate portion 5 acts on the bellows end S as shown in FIG. When the load F acts on the center of the bellows illustrated in FIG. 6B (indicated by T in the figure), the moment action m is mainly a deformation mode only by the compression / tension action in the load action direction. Compared to that, by applying the load F biased to the bellows end S, not only the compression / tension action in the direction of the load action, but also the moment action M can be remarkably increased. The required load can be reduced. In the present invention, it goes without saying that the bent plate portion 4 of the second reinforcing hardware 1 may be formed so as to have the form shown in FIG.

  The first reinforcement hardware 53 and the second reinforcement hardware 1 are arranged in parallel and provided in the joint portion 52. As a parallel form, for example, as shown in FIG. 2, the wooden structural members 51 and 52 are arranged side by side in the width direction (indicated by W in the figure). In this case, as shown in FIG. 7, even if the first and second reinforcing hardware 53, 1 face each other so that the first attachment portion 54 and the second attachment portion 6 are adjacent to each other, as shown in FIG. You may make it back to back so that the 1st attaching part 54 and the 2nd attaching part 6 may leave | separate.

  Or you may make it arrange | position these 1st and 2nd reinforcement metal fittings 53 and 1 by the form arranged in the inner side and the outer side of a corner. In addition to this, as shown in FIG. 9, the first and second attachment portions 54 a, 6 a so that the vertically and horizontally oriented wooden structural members 50, 51 abut on the L-shaped side portions in the joint portion 52. May be provided side by side in parallel on the side portions of the vertically and horizontally oriented wooden structural members 50 and 51. Furthermore, as shown in FIG. 10, either one of the first and second reinforcing hardware 53, 1 may be installed in the corner and the other may be installed in the side surface portion.

  If it demonstrates according to the example of the parallel arrangement | positioning shown in FIG.7 and FIG.8, when these joint parts 52 and 1 deform | transform, these 1st and 2nd reinforcement hardware 53,1 will not produce a twist in the said joint part 52. As described above, the centers of the mounting intervals of the first and second mounting portions 54 and 6 are arranged along the cores Z of the vertically and horizontally facing wooden structural members 50 and 51. Even in the modification of the parallel configuration, the performance of the first and second reinforcing hardware 53, 1 is taken into consideration, so that the deformation force acts along the core Z of the wooden structural members 50, 51. You may make it set the attachment position of the 1st and 2nd attachment parts 54 and 6. FIG.

  The effect | action of the joint part reinforcement structure of the wooden building concerning this embodiment is demonstrated. When deformation external force is input to the wooden building and deformation occurs in the joint portion 52, the first reinforcement hardware 53 and the second reinforcement hardware 1 function so that the first reinforcement hardware 53 first prevents small deformation. After the deformation increases and the blocking function of the first reinforcing metal 53 is gradually lost, the second reinforcing metal 1 starts to absorb the deformation energy and the first reinforcing metal 53 stops functioning. In addition, the second reinforcing hardware 1 continuously absorbs deformation energy.

  Specifically, when the deformation of the joint portion 52 is small, the first reinforcing metal piece 53 provided with the flat surface portion 55 having the highest maximum yield strength secures the initial rigidity of the joint portion 52 and prevents the small deformation. Can resist. At this time, the second reinforcement hardware 1 that includes the bent plate portion 4 that expands and contracts to absorb deformation energy and follows the deformation hardly functions because the deformation is small.

  In a medium-scale deformation state, the first reinforcing metal 53 resists and at the same time the bent plate portion 4 of the second reinforcing metal 1 absorbs a part of the deformation energy. Can be increased.

  Further, when the deformation is large or when the deformation gradually increases, the screws 56 of the first mounting portion 54 come out of the wooden structure materials 50 and 51, and the first reinforcing hardware 53 is attached to the wooden structure materials 50 and 51. When a transition is made to a situation in which the first reinforcement hardware 53 cannot resist deformation, such as loosening or the screw 56 or the first reinforcement hardware 53 being deformed, the large deformation of the joint 52 causes the second reinforcement hardware 1 to be deformed. The bending plate part 4 can absorb deformation energy accompanied by expansion and contraction.

  As described above, in the joint part reinforcing structure for a wooden building according to the present embodiment, the first and second reinforcing hardware 53, 1 described above are arranged in parallel with the joint part 52. Therefore, sufficient toughness can be secured to the joint portion 52 by the second reinforcing hardware 1 provided with the bent plate portion 4 that expands and contracts to absorb deformation energy with respect to large-scale deformation, and small-scale deformation. In contrast, the first reinforcement hardware 53 having the flat surface portion 55 can increase the initial rigidity and maximum proof strength of the joint portion 52, and the first and second reinforcements can be applied in a wide deformation range from small deformation to large deformation. The hardware 53, 1 functions reliably and can improve the strength of the joint.

  By improving the strength of the joint, it is possible to improve the resistance to horizontal force of wooden buildings and to improve the resistance to overturning moments caused by the weight of the building. It can be larger to delay the collapse or even reduce the risk of collapse.

  In addition, it is difficult to cover the proof strength from small deformation to large deformation with one reinforcing hardware, and it is extremely disadvantageous in terms of cost, workability and workability in manufacturing, but this embodiment Then, by using the first and second reinforcing metal fittings 53 and 1 suitable for the deformation, the same or higher performance can be expected, and the production is advantageous in terms of cost, workability and workability. is there.

  For the second reinforcing hardware 1, if the bent plate portion 4 is bent toward the surface 5c side of the flat plate portion 5 to be bent, when the bent plate portion 4 is compressed and deformed, the bent plate portion 4 The flat plate portion 5 does not protrude outward from the back surface 5d side, and a space that does not interfere with the bent plate portion 4 that expands and contracts can be secured on the back surface 5d side.

  Since such a space can be secured, the second reinforcing hardware 1 can be appropriately juxtaposed with respect to the first reinforcing metal 53 even in a narrow mounting location, and space saving can be achieved. At the same time, peripheral members such as the brace 58 can be installed close to the second reinforcing hardware 1 without impairing the function thereof.

  In addition, the moment action M in the bent plate portion 4 can be strengthened, the load required for expansion / contraction deformation can be reduced, and the deformation performance of the bent plate portion 4 having the bellows shape can be improved and improved. It is possible to exhibit an excellent energy absorbing ability. As a result, the load acting on the second mounting portion 6 is reduced and the load on the screw 7 and the like is reduced, so that the function of the bent plate portion 4 can be ensured even against repeated shaking due to an earthquake. It can be demonstrated.

  In addition, the pair of second mounting portions 6 are formed by bending the flat plate portion 5 toward the surface 5c side so as to face each other, and the bent plate portion 4 is positioned between the second mounting portions 6. By doing so, the space required for joining by the second mounting portion 6 and the space for expanding and deforming the bent plate portion 4 can be combined on the same side (surface 5c side), and the second reinforcing hardware 1 can be made compact. This also saves space.

  Furthermore, since the bending plate part 4 is formed with a narrow center in the expansion / contraction direction, it is possible to enhance not only the mountain part 4a on both sides but also the deformation part in the valley part 4b, and the expansion / contraction performance of the bending plate part 4 is improved. . Since the length dimension of the side edge part 5a of the flat plate part 5 is formed long in the length direction of the wooden structural members 50 and 51, between the bent plate part 4 and the second attachment part 6 by the flat plate part 5 Effective load transmission can be ensured. If both the second mounting portions 6 are bent in the same direction, compared to the case of bending in the opposite direction, the left and right lateral shearing action across the bent plate portion 4 is effectively effective in both the left and right directions. The load input from the wooden structural members 50 and 51 to the second mounting portion 6 can be efficiently transmitted to the flat plate portion 5 and the bent plate portion 4 while resisting.

  In the above embodiment, the case where the pair of second mounting portions 6 are formed so as to face each other by being bent in an L shape with respect to the flat plate portion 5 is illustrated in FIG. As shown in the figure, the second mounting portion 6 and the flat plate portion 5 may be formed in a form that is continuous and flat without being bent with respect to the flat plate portion 5. When bent into an L shape, the second reinforcing hardware 1 is installed in a form that fits into the corner between the wooden structural members 50 and 51 as shown in the figure. It is installed in the form of being attached to the side surface portion forming an L-shape between 51. Needless to say, even with such an installation type, the same operational effects as in the above-described embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 2nd reinforcement metal part 4 Bending board part 6, 6a 2nd attachment part 50 Vertical wooden structure material 51 Horizontal wooden structure material 52 Joint part 53 1st reinforcement metal | hardware 54,54a 1st attachment part 55 Flat surface part

Claims (1)

It is a joint reinforcement structure of a wooden building in which a joint that joins a vertically oriented wooden structure and a horizontally oriented wooden structure is reinforced with reinforcement hardware,
A first mounting portion that is mounted on each of the vertical and horizontal wooden structural members, and the first mounting portion that is provided between the first mounting portions and positioned in the joint portion of the vertical and horizontal wooden structural members. A first reinforcing hardware having a flat surface portion that resists small deformation of the portion;
A second mounting portion that is attached to each of the vertical and horizontal wooden structural members, and the second mounting portion that is provided between the second mounting portions and positioned in the joint portion of the vertical and horizontal wooden structural members. A second reinforcing hardware having a bent plate portion that expands and contracts in accordance with an increase in deformation of the portion and absorbs deformation energy;
A joint reinforcement structure for a wooden building, wherein the first and second reinforcement hardware are arranged in parallel and provided in the joint.

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