Seismic wall structure

Abstract

To provide a seismic wall structure including a wooden wall mainly made of cross-laminated timber.SOLUTION: The seismic wall structure includes a column-beam frame including steel beams, wooden walls installed within the structural plane of the column-beam frame, and connecting members that connect the steel beams and the wooden walls. The wooden walls are mainly made of cross-laminated timber. The connecting members are installed at the top and bottom of the wooden walls and connect the steel beams and the wooden walls while keeping them apart. A non-connecting area where no connecting member is present is provided between the wooden walls and the steel beams, and a wedge-shaped connecting unit is provided in the non-connecting area, with one sloped portion closely contacting the other sloped portion, sealing the space between the wooden walls and the steel beams.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a shear wall structure including a wood wall. [Background technology]

[0002] In recent years, the use of wooden walls in mid- to high-rise buildings has been considered from the perspectives of design and weight reduction. Even in urban areas where high fire resistance is required, attempts are being made to construct mid- to high-rise buildings using a construction method that combines cross-laminated timber and steel frames, promoting the use of wood and showcasing the appeal of wood materials in streetscapes.

[0003] For example, Patent Document 1 discloses a wooden earthquake-resistant wall in which the upper and lower ends of a wall body made of wooden material are joined to steel beams via beam joints. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-80569 Summary of the Invention [Problem to be solved by the invention]

[0005] In the wooden shear wall disclosed in Patent Document 1, for example, beam joints are constructed with lag screw bolts that transmit couples (tensile forces) from the wall body to the steel beams, and drift pins that transmit shear forces from the wall body to the steel beams. However, because the lag screw bolts are fixed to the wall body made of wooden material, even if the strength of the lag screw bolts is increased, the wall body will be damaged before the lag screw bolts, making it difficult to increase the strength of the wooden shear wall.

[0006] The present disclosure aims to provide a seismic wall structure that improves the seismic performance of a seismic wall structure including a wooden wall mainly made of cross-laminated timber, while enabling at least one of the following: rationally combining a wooden-based seismic wall with a steel beam; increasing the degree of freedom in the installation location of the wooden wall; or increasing its structural strength. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the present disclosure provides a seismic wall structure comprising a column-beam structure including steel beams, wooden walls arranged within the structural plane of the column-beam structure, and connecting members that join the steel beams and the wooden walls, wherein the wooden walls are mainly made of orthogonal laminated timber, the connecting members include connecting plates that are joined integrally to the steel beams and are arranged at the top and bottom of the wooden walls to join the steel beams and the wooden walls while keeping them apart, a non-connecting area where the connecting members are not present is provided between the wooden wall and the steel beams, and a wedge-shaped connecting unit is provided in the non-connecting area, with one sloping portion closely adjacent to the other sloping portion, thereby closing the space between the wooden wall and the steel beams.

[0008] Furthermore, in the earthquake-resistant wall structure, it is preferable that the wedge-shaped connecting unit has a first unit that is joined to either the wooden wall or the steel beam, and a second unit that is joined to the other of the wooden wall or the steel beam, and that the first unit and the second unit are arranged so that their respective inclined portions are inclined at the same gradient relative to the horizontal direction, and that one inclined portion can be driven in while the other inclined portion is abutted against the other inclined portion.

[0009] In addition, in the earthquake-resistant wall structure, it is preferable that the wedge-shaped connecting unit is provided at least on the top end of the wooden wall.

[0010] Furthermore, in the earthquake-resistant wall structure, it is preferable that the first unit is a wall-side unit provided at the top end of the wooden wall, and the second unit is a beam-side unit joined to the bottom flange of the steel beam.

[0011] In this case, it is preferable that the first unit includes a flat plate portion that is joined to the top end of the wooden wall and a support plate portion having the inclined portion on its upper end surface, the flat plate portion and the support plate portion being arranged to have a T-shaped cross section perpendicular to the material axis, and the inclined portion of the second unit being in close contact with the inclined portion of the first unit.

[0012] Furthermore, it is preferable that the second unit includes at least one set of fixing pieces suspended from the lower flange and a plate portion having the inclined portion on its lower end surface, and that the plate portion is inserted between and joined to the set of fixing pieces, and that the inclined portion of the first unit is tightly attached to the inclined portion of the second unit.

[0013] In the earthquake-resistant wall structure, it is preferable that a strip-shaped stiffening steel material is joined to the small end face of the wooden wall.

[0014] In the earthquake-resistant wall structure, the steel beams, the connecting members, and the wedge-shaped connection units are preferably covered with a fire-resistant covering material. [Effects of the Invention]

[0015] The invention of the present disclosure makes it possible to create a seismic wall structure with improved seismic performance, including a wooden wall mainly made of cross-laminated timber. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a front view showing a shear wall structure according to an embodiment of the present disclosure. [Figure 2] 2 is a cross-sectional view taken along the line AA in FIG. 1. [Figure 3] 3 is a cross-sectional view of FIG. 2 taken along line B-B. [Figure 4] FIG. 2 is a front view showing the main part of the earthquake-resistant wall structure. [Figure 5] FIG. 5 is an enlarged front view showing part C in FIG. [Figure 6]FIG. 2 is an exploded perspective view showing the mounting structure of the wedge-shaped connection unit in the earthquake-resistant wall structure. [Figure 7] 5 is a cross-sectional view taken along the line DD in FIG. 4. [Figure 8] FIG. 10 is a front view showing a main part of a shear wall structure according to another embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of a shear wall structure according to the present disclosure will be described with reference to the drawings.

[0018] 1 is a front view showing an embodiment of a shear wall structure 1. In the drawing, the horizontal direction or the width direction of the wooden wall 5 is shown as the X direction, and the vertical direction orthogonal to the X direction or the height direction of the wooden wall 5 is shown as the Y direction.

[0019] In this earthquake-resistant wall structure 1, a wooden wall 5 is provided within the structural plane of a steel-framed column-beam frame 4. The column-beam frame 4 includes a pair of steel beams 41 extending horizontally and arranged above and below the wooden wall 5, and a pair of steel columns 45 extending vertically and on which the steel beams 41 are erected. A floor slab (not shown) is provided on top of the steel beams 41. The steel beams 41 are made of, for example, H-shaped steel or I-shaped steel, and the steel columns 45 are made of, for example, square steel pipes. In the illustrated embodiment, the steel beams 41 are main girders. Note that the steel beams 41 and steel columns 45 are not limited to the illustrated configuration, and may be made of various types of shaped steel or other steel pipe steel.

[0020] The wooden wall 5 is installed as a seismic wall within the structural plane of the column-beam frame 4. The wooden wall 5 can be made of any wood material that is generally used as a structural material for buildings, such as solid wood, laminated wood (structural laminated wood specified by the JAS), resin-impregnated wood, or other wood materials, without any particular restrictions. It can also be a composite material in which load-bearing laminated wood is laminated with a non-combustible covering material. In the illustrated embodiment, cross-laminated timber (CLT) is used, in which lamina (sawn boards) are arranged in parallel and laminated and glued so that the fiber directions cross.

[0021] The wooden walls 5 are disposed at a distance of, for example, about 1000 to 1500 mm from the left and right steel columns 45. The wooden walls 5 are also disposed at a distance from the steel beams 41 in the height direction Y, with a gap of, for example, about 100 to 200 mm between them and the upper and lower steel beams 41.

[0022] The wooden wall 5 and the steel beam 41 are not directly joined, but are provided with a disconnected edge. In the illustrated embodiment, a connecting member 6 is interposed between the wooden wall 5 and the steel beam 41. In particular, the connecting member 6 and a wedge-shaped connecting unit 10 are interposed between the top end of the wooden wall 5 and the steel beam 41.

[0023] In the wooden wall 5, a stiffening steel member 71 is joined to a small end face (small end face 52 shown in FIG. 3) extending in the vertical direction. FIG. 2 shows the stiffening steel member 71 provided on the small end face of the wooden wall 5, and is a cross-sectional view taken along line AA in FIG. 1. FIG. 3 is a cross-sectional view taken along line BB in FIG. 2.

[0024] The stiffening steel material 71 is a strip-shaped steel material joined to the left and right small end faces of the wooden wall 5. As shown in Fig. 2, a gusset plate 73 is welded to the bottom flange 43 of the upper steel beam 41 and is attached vertically to the bottom flange 43. A gusset plate 73 is similarly welded to the top flange 42 of the lower steel beam 41. The stiffening steel material 71 is overlapped on the gusset plates 73 at both the top and bottom ends and joined with bolts and nuts 74 (see Fig. 5 described later).

[0025] As shown in Fig. 3, the stiffening steel material 71 is fixed to the small end face 52 of the wooden wall 5 by driving a plurality of wood screws 72 into the wooden wall 5. The stiffening steel material 71 is in the form of a strip having a width that is approximately the same as the thickness of the wooden wall 5. The wood screws 72 are evenly spaced in the height direction Y and also in the width direction (depth direction Z) of the stiffening steel material 71.

[0026] A plurality of screw holes are formed in advance in at least one row on each side at approximately equal intervals in the stiffening steel material 71. The stiffening steel material 71 is placed in close contact with the small end face of the wooden wall 5, and the stiffening steel material 71 is fastened to the wooden wall 5 by driving wood screws 72 into the screw holes. This increases the rigidity of the wooden wall 5.

[0027] Unlike drift pin joints, bolt joints, or tension bolt joints, wood screws 72 do not require precision drilling and can provide high joint integrity with little backlash. Also, by fastening wood screws 72 to stiffening steel material 71 in advance at the factory, they can be made into a unit, and installation at the construction site will be the same as with regular steel frame members using high-strength bolts, making it easy to install.

[0028] In the illustrated embodiment, the stiffening steel members 71 are fixed by driving wood screws 72 into a row on each side, but the wood screws 72 may also be driven in a staggered (zigzag) pattern, for example. The spacing between the wood screws 72 may also be adjusted to be non-uniform depending on the distribution of stress generated inside the wooden wall 5. When orthogonally laminated boards are used for the wooden wall 5, for example, the joint strength can be effectively ensured by driving wood screws 72 into the entire small end faces of the lamina that appear on the end faces of the wooden wall 5.

[0029] Furthermore, in the earthquake-resistant wall structure 1, the stiffening steel material 71 is not limited to steel strips, but can be replaced with any steel material, regardless of shape, that can be joined with wood screws 72, such as H-shaped steel, angles, and channel steel.

[0030] FIG. 4 is a front view showing the main part of the earthquake-resistant wall structure 1, and FIG. 5 is an enlarged front view showing part C in FIG.

[0031] The wooden wall 5 is joined to the steel beam 41 via a joining member 6 located approximately in the center in the width direction. The joining member 6 is made of steel and includes, for example, a joining plate 61 and a connecting plate 62. The joining plate 61 is joined to the steel beam 41. The connecting plate 62 is formed in a flat plate shape and is inserted into a slit (not shown) formed in the wooden wall 5, and is fixed to the wooden wall 5 using a drift pin 64 or the like. A portion of the connecting plate 62 extends from the wooden wall 5.

[0032] At the upper end of the wooden wall 5, the upper part of a connecting plate 62 fixed with drift pins 64 or the like is exposed. A connecting plate 61 is welded to the lower flange 43 of the steel beam 41 and is provided integrally therewith. The connecting plate 61 extending downward from the lower flange 43 of the steel beam 41 is joined with bolts and nuts 63 to the upper part of the connecting plate 62 exposed above the wooden wall 5. The lower end of the wooden wall 5 and the steel beam 41 are also joined using a connecting member 6. Such a connecting member 6 joins the steel beam 41 and the wooden wall 5 while maintaining a gap between them, and also joins the wooden wall 5 and the steel beam 41 in a manner that allows shear force to be transmitted between them.

[0033] As shown in Fig. 4, in the earthquake-resistant wall structure 1, a non-jointing area E, which is an area where no connecting member 6 exists, is provided within the structural plane of the column-beam frame 4, at least between the top end of the wooden wall 5 and the steel beam 41. In the non-jointing area E, the steel beam 41 and the wooden wall 5 are not directly joined. In the illustrated embodiment, a non-jointing area E is provided on both the left and right sides of the connecting member 6.

[0034] These non-jointed areas E are provided corresponding to the corners of the wooden walls 5. In the non-jointed areas E, wedge-shaped connecting units 10 are provided, which horizontally hammer one sloped section into the other sloped section to secure them in close contact with each other, thereby closing the gap between the wooden walls 5 and the steel beams 41.

[0035] The wedge-shaped connecting unit 10 includes a first unit that is joined to either a wooden wall 5 or a steel beam 41, and a second unit that is joined to the other of the wooden wall 5 or the steel beam 41, and the first unit and the second unit are each configured to have a sloped portion that has a gradient relative to the horizontal direction.

[0036] In the shear wall structure 1 according to the exemplary embodiment, wedge-shaped connecting units 10 are disposed in non-joint areas E formed at least on the top ends of the wooden walls 5. As shown in FIG. 4 , the non-joint areas E are provided in the spaces on both the left and right sides of the connecting member 6 when viewed from the front, and are disposed near the left and right ends in the X direction of the top ends of the wooden walls 5. In this case, the wedge-shaped connecting units 10 are configured to include a wall-side unit 11 provided on the top ends of the wooden walls 5 as a first unit, and a beam-side unit 21 joined to the bottom flanges 43 of the steel beams 41 as a second unit.

[0037] As shown enlarged in Figure 5, the wedge-shaped connection unit 10 is disposed between the gusset plate 73 (and the stiffening steel material 71) and the connecting member 6. The sloped surface 14 of the wall-side unit 11 of the wedge-shaped connection unit 10 and the sloped surface 23 of the beam-side unit 21 are disposed in close contact with each other, blocking most of the non-jointed area E.

[0038] Fig. 6 is an exploded perspective view showing the mounting structure of the wedge-shaped connection unit 10, and Fig. 7 is a DD cross-sectional view of Fig. 4. In Fig. 6, the bottom flange 43 of the steel beam 41 is shown by an imaginary line to make it easier to see the mounting structure of each part.

[0039] The detailed configuration of the wedge-shaped connecting unit 10 will be described with reference to Figure 6. In the wedge-shaped connecting unit 10, the wall-side unit 11 is made of steel and includes a flat plate portion 12 joined to the top edge 51 of the wooden wall 5, and a support plate portion 13 erected on the flat plate portion 12. The flat plate portion 12 and the support plate portion 13 are joined together so as to have a T-shaped cross section perpendicular to the material axis.

[0040] The upper end surface of the support plate portion 13 is formed as a slope portion 14 that is inclined relative to the horizontal direction. The slope portion 14 is provided at an angle along the material axis direction. Therefore, the support plate portion 13 is provided on the flat plate portion 12 so that it is low at one end and gradually becomes higher as it approaches the other end.

[0041] In the illustrated embodiment, the sloped portion 14 of the wall-side unit 11 is an inclined surface that slopes upward from the small end face 52 of the wooden wall 5 toward the connecting member 6. The gradient of the sloped portion 14 is preferably set to, for example, 2 to 5 degrees with respect to the horizontal direction.

[0042] At the joint between the flat plate portion 12 and the support plate portion 13, a plurality of ribs 15 are erected in a direction perpendicular to the flat plate portion 12 and the support plate portion 13 to increase rigidity. The ribs 15 are evenly provided on both sides of the flat plate portion 12, sandwiching the support plate portion 13 therebetween.

[0043] Screw holes are provided in multiple locations on the flat plate portion 12. The flat plate portion 12 of the wall unit 11 is placed on the top edge 51 of the wooden wall 5 so as to be in close contact with the top edge 51, and the wall unit 11 is joined to the wooden wall 5 by driving screws 16 into the bolt holes.

[0044] The beam-side unit 21 constituting the wedge-shaped connection unit 10 includes a pair of fixing pieces 30 and a plate portion 22. The fixing pieces 30 are made of steel, are welded to the bottom surface of the lower flange 43 of the steel beam 41, and are installed vertically (in the height direction Y).

[0045] In the illustrated embodiment, two sets of fixing pieces 30 are vertically attached to the bottom flange 43 of the steel beam 41. The sets of fixing pieces 30 are arranged parallel to each other with their flat plate surfaces facing each other and oriented along the material axis direction. One set of fixing pieces 30 and the other set of fixing pieces 30 are arranged at a distance from each other along the material axis direction of the steel beam 41. Each fixing piece 30 has a long hole 31 that is long in the horizontal direction. The number of fixing pieces 30 is not limited to two, and a configuration in which only one set of fixing pieces 30 is provided may also be used.

[0046] The plate portion 22 of the beam-side unit 21 is a plate material made of steel and has an axial length equivalent to that of the support plate portion 13 of the wall-side unit 11. The lower end surface of the plate portion 22 is formed as a sloped portion 23 that is inclined relative to the horizontal direction. The lower end surface, which is the sloped portion 23, and the upper end surface 26 of the plate portion 22 are not parallel to each other, and the plate portion 22 has a generally wedge shape as a whole. In other words, the width of the plate portion 22 along the height direction is large at one end and gradually decreases toward the other end. The thickness of the plate portion 22 may be equivalent to or larger than the thickness of the support plate portion 13 of the wall-side unit 11.

[0047] The sloped surface 23 of the plate portion 22 is provided with a gradient corresponding to the sloped surface 14 of the wall-side unit 11. In the illustrated embodiment, the sloped surface 23 of the plate portion 22 is an inclined surface with an upward gradient in the direction from the small end face 52 side of the wooden wall 5 toward the connecting member 6, and preferably has a gradient of, for example, 2 to 5 degrees with respect to the horizontal direction.

[0048] Referring to Figure 5, the inclined portion 23 of the plate portion 22 is configured so that when it is arranged in close proximity to the inclined portion 14 of the wall side unit 11, the upper end surface 26 of the plate portion 22 and the flat portion 12 of the wall side unit 11 are arranged parallel to each other, for example, horizontally.

[0049] As shown in Fig. 6, the plate portion 22 is provided with bolt holes 24 that penetrate perpendicular to the material axis direction. In the illustrated embodiment, two bolt holes 24 are provided in the plate portion 22 corresponding to the two sets of fixing pieces 30. A plate-shaped driving piece 25 protrudes between the two bolt holes 24. The driving piece 25 is welded to both sides or one side of the plate portion 22 and is provided integrally with the plate portion 22. The driving piece 25 is disposed perpendicular to the plate portion 22.

[0050] The plate portion 22 is driven between the wall unit 11 joined to the top edge 51 of the wooden wall 5 and the bottom flange 43 of the steel beam 41. The upper end surface 26 of the plate portion 22 abuts against the underside of the bottom flange 43 of the steel beam 41, and the plate portion 22 is inserted between the opposing fixing pieces 30. The inclined surface 23 of the plate portion 22 is driven into the wall unit 11 while abutting along the inclined surface 14 of the wall unit 11. At this time, the driving piece 25 provided on the plate portion 22 can be driven in by hitting it with an appropriate tool such as a hammer.

[0051] By driving the plate portion 22 into a position where it can no longer be driven in, the sloped portion 23 of the beam-side unit 21 comes into tight contact with the sloped portion 14 of the wall-side unit 11. The plate portion 22 is fixed to the bottom flange 43 of the steel beam 41 by fastening the bolt hole 24 and the elongated hole 31 of the fixing piece 30 with a bolt and nut 32. Since the elongated hole 31 is provided in the fixing piece 30 relative to the bolt hole 24 of the plate portion 22, the fixing position of the plate portion 22 can be adjusted within the elongated hole 31, and some dimensional error is allowed.

[0052] For example, the horizontal hole length of the long hole 31 is the range of movement of the beam-side unit 21. Within this range of movement, it is possible to absorb dimensional errors (approximately ±2 mm) of the steel frame, and the inclined surfaces 14, 23 can be brought into sufficient contact with each other. The gradient of the inclined surfaces 14, 23 relative to the horizontal direction is, as mentioned above, for example, 2 to 5 degrees, which is a preferable gradient for bringing them into close contact with each other.

[0053] This allows the wedge-shaped connecting unit 10 to be fixed in place with the sloped surface 23 of the beam-side unit 21 tightly contacting the sloped surface 14 of the wall-side unit 11. As shown in FIG. 4 , the area between the steel beam 41 and the wooden wall 5 can be closed off by similarly providing a wedge-shaped connecting unit 10 in each of the two non-jointed areas E on both sides of the connecting member 6. A non-jointed area without a connecting member 6 is also provided at the bottom end of the wooden wall 5, and in the illustrated embodiment, an appropriate steel leg member is installed. By installing the wedge-shaped connecting unit 10 at the top end of the wooden wall 5 and driving and fixing the plate portion 22, it is possible to form a seismic wall structure 1 in which the upper and lower steel beams 41 and the wooden wall 5 are tightly contacted.

[0054] Furthermore, it is not necessary for the wedge-shaped connecting unit 10 to completely block the non-bonding area E; it is sufficient for the inclined surface portion 14 and the inclined surface portion 23 to be in contact with each other to the extent necessary for stress transmission between them, and space in the non-bonding area E may remain around the wedge-shaped connecting unit 10.

[0055] As shown in FIG. 7 , in the shear wall structure 1, a fire-resistant coating material 8 may be applied to the steel beams 41. The fire-resistant coating material 8 may be a sprayed material such as sprayed rock wool. As described above, the steel beams 41 are not directly joined to the wooden walls 5, so a large amount of steel can be exposed. This makes it easy to spray the fire-resistant coating material 8 onto the steel beams 41, and the fire-resistant coating material 8 can be provided to encompass the steel beams 41, resulting in a structure with excellent fire resistance and durability. Similarly, by applying an appropriate fire-resistant coating material 8 to the wedge-shaped connecting units 10 joined to the steel beams 41, fire resistance can be ensured.

[0056] It should be noted that the wooden wall 5 does not necessarily have to be provided with stiffening steel members 71. Fig. 8 is a front view showing the main parts of a shear wall structure 100 according to another embodiment. As shown in the figure, in this shear wall structure 100, the wooden wall 5 does not have stiffening steel members joined to the small end faces 52 extending in the vertical direction. Joining members 6 are interposed between the wooden wall 5 and the steel beams 41, and wedge-shaped connecting units 10 are installed in the non-jointed areas E between the top ends of the wooden wall 5 and the steel beams 41.

[0057] As explained above, in the earthquake-resistant wall structure 1, non-jointed areas E where no connecting members 6 exist are provided corresponding to the corners of the wooden walls 5, and the wedge-shaped connecting units 10 are installed in the non-jointed areas E, which makes it possible to reliably transmit the bearing pressure generated in the corners to the steel beams 41. The wedge-shaped connecting units 10 make it possible to provide a plastic section for the stiffening steel material 71, which ensures the deformation performance of the steel material and also makes it possible to improve earthquake resistance.

[0058] Moreover, the wedge-shaped connecting units 10 can be easily installed between the steel beams 41 and the wooden walls 5. In conventional structures, the gaps around the steel beams 41 have been filled with non-shrinkage mortar, concrete, or the like. In contrast, the shear wall structure 1 of the present disclosure can be constructed using dry construction methods using the wedge-shaped connecting units 10, which significantly improves workability and reduces construction costs.

[0059] It should be noted that the wedge-shaped connecting units 10 are not limited to being provided only between the top end 51 of the wooden wall 5 and the steel beam 41. A non-jointed area where no connecting members 6 exist is also provided at the lower end of the wooden wall 5, and in the illustrated embodiment, appropriate leg members made of steel are installed, but the wedge-shaped connecting units 10 may also be provided in the non-jointed area at the lower end of the wooden wall 5 or in other structural parts in the same manner as described above.

[0060] As described above, the earthquake-resistant wall structure 1 of the present disclosure has both high earthquake resistance and fire resistance, and therefore can be applied to mid- to high-rise buildings as a construction method that combines wooden walls 5, orthogonal laminated timber panels, and steel-framed column and beam structures 4, as well as to buildings in urban areas where fire resistance is required. This not only makes it possible to promote the use of wood, but also makes it possible to bring out the appeal of wood materials in cityscapes.

[0061] Furthermore, the earthquake-resistant wall structure 1 can be used for the earthquake-resistant wall portion of a general steel structure in a building structure, and can be used in buildings for a variety of purposes, making it possible to easily and widely utilize wood materials. The earthquake-resistant wall structure 1 can be used not only in new buildings, but also in building renovations such as earthquake reinforcement.

[0062] The technical scope of the present disclosure should not be interpreted as being limited by the illustrated embodiments, but should be interpreted conceptually based on the claims. The names of elements used in the claims and specification are for convenience in making the invention easier to understand specifically, and the names do not unnecessarily limit the concepts or properties of the elements. When implementing the invention of the present disclosure, the detailed dimensions, materials, quantities, etc. of elements not specifically specified in the claims may be modified as appropriate within the scope of obtaining effects substantially equivalent to or greater than those of the illustrated embodiments. [Explanation of symbols]

[0063] 1,100 shear wall structure 10 Wedge-shaped connecting unit 11 Wall unit (first unit) 12 Flat plate part 13 Support plate part 14 Slope 15 Ribs 21 Beam side unit (second unit) 22 Plate section 23 Slope 24 bolt holes 25 Drive piece 26 Upper end surface 30 Fixed piece 31 long hole 4 Column-beam frame 41 Steel beam 42 Upper flange 43 Lower flange 44 Web 45 Steel column 5 Wooden wall 51 Top 52 Small end face 6 Joint materials 61 Joint Plate 62 Connecting plate 71 Stiffening steel 72 wood screws 73 Gusset Plate 8 Fireproof cladding E Non-bonded area

Claims

1. A shear wall structure comprising a column-beam frame including a steel beam, a wooden wall provided within the structural surface of the column-beam frame, and a connecting member connecting the steel beam and the wooden wall, The wooden walls are mainly made of cross-laminated timber. The connecting member includes a connecting plate integrally connected to the steel beam, and is provided at the upper and lower parts of the wooden wall to connect the steel beam and the wooden wall in a spaced-apart state; A non-jointed region where the joint member does not exist is provided between the wooden wall and the steel beam, A seismic wall structure characterized in that a wedge-shaped connecting unit is provided in the non-jointed area, with one inclined surface portion closely contacting the other inclined surface portion, thereby closing the gap between the wooden wall and the steel beam.

2. The earthquake-resistant wall structure according to claim 1, The wedge-shaped connecting unit is a first unit joined to either the wooden wall or the steel beam; a second unit joined to the other of the wooden wall and the steel beam; A shear wall structure characterized in that the first unit and the second unit have their respective inclined portions inclined at the same gradient relative to the horizontal direction, and are configured so that one inclined portion can be driven into the other inclined portion while abutting it against the other inclined portion.

3. The earthquake-resistant wall structure according to claim 2, A shear wall structure characterized in that the wedge-shaped connecting unit is provided at least at the top end of the wooden wall.

4. The earthquake-resistant wall structure according to claim 3, The first unit is a wall-side unit provided on the top end of the wooden wall, A shear wall structure characterized in that the second unit is a beam side unit joined to the bottom flange of the steel beam.

5. The earthquake-resistant wall structure according to claim 4, The first unit is A flat plate portion joined to the top end of the wooden wall; a support plate portion having the inclined surface on an upper end surface thereof, A shear wall structure characterized in that the flat plate portion and the support plate portion are arranged to have a T-shaped cross section perpendicular to the material axis, and the inclined portion of the second unit is tightly attached to the inclined portion of the first unit.

6. The earthquake-resistant wall structure according to claim 4, The second unit is At least one set of fixing pieces suspended from the lower flange; a plate portion having the inclined surface on a lower end surface thereof, A shear wall structure characterized in that the plate portion is inserted and joined between a pair of the fixing pieces, and the inclined portion of the first unit is tightly attached to the inclined portion of the second unit.

7. In the earthquake-resistant wall structure according to any one of claims 1 to 6, A seismic wall structure characterized in that a strip of stiffening steel material is joined to the small end face of the wooden wall.

8. In the earthquake-resistant wall structure according to any one of claims 1 to 6, A shear wall structure characterized in that the steel beams, the connecting members, and the wedge-shaped connection units are covered with a fire-resistant covering material.

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