Joining member for wooden panels and joint structure using the same

Abstract

To reliably transmit horizontal shear force and axial force acting on a wooden panel to a beam member in a wall structure using the wooden panel supported by the beam member.SOLUTION: A joint structure comprises as joining members: a panel-side joining metal fitting 21A including at least a side plate 22 that is in surface contact with the inside surface of a cutout 2c that is formed to form a rectangle when a portion of the lower surface of a wooden panel 2 is viewed from the front, and a joining surface plate 25A joined to the side plate 22, and housed and held in the cutout 2c; and a beam-side joining metal fitting 21B including a bottom plate 26 that is fixed and held at a position on a steel beam 3 corresponding to the panel-side joining metal fitting 21A housed in the cutout 2c when the wooden panel 2 is supported upright on the steel beam 3, and a joining surface plate 25B that is joined to the bottom plate 26 and that can come into surface contact with the joining surface plate 25A. The joining surface plates 25A, 25B are surface-joined to join the panel-side joining metal fitting 21A and the beam-side joining metal fitting 21B together.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a joint member for wood panels that is used to join large wood panels to beams and that can reliably withstand the shear force and axial force acting on the wood panel at the joint, and a joint structure using the same. [Background technology]

[0002] In recent years, mid-rise and high-rise buildings have been constructed that use various types of large laminated board materials (hereinafter collectively referred to as wood panels) as wall components, such as CLT (Cross Laminated Timber), a thick, large wood-based board made by arranging sawn boards (laminas) and then laminating and gluing them so that the grain direction is perpendicular to the wall, and LVL (Laminated Venner Lumber), a laminated veneer material.

[0003] Traditionally, the joints between these wood panels and beam members have often used a structure in which bending moments due to earthquake forces, etc. are resisted by the tensile resistance of steel bars connecting the wood panel to the beam and the compressive resistance of the wood panel, while shear forces are resisted by separately installed steel plates and drift pins.

[0004] Furthermore, in order to facilitate the design of steel-framed building structures in which wooden panels are installed within a steel-framed structure, it has been proposed to use long holes (loose holes) to hold steel plates to the wooden panels so that the wooden panels can slide slightly upwards (Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2023-50783 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the steel frame building structure disclosed in Patent Document 1, since it has a structure in which a shear receiving metal fitting 30 attached to the central part of the upper surface of the wooden panel 20 (reference numerals in Patent Document 1 are used in this paragraph) and a joining metal fitting 50 supported by fixing jigs 60 attached to both side ends of the lower surface are point-supported, it cannot be said that it is a structure that can sufficiently exhibit the holding performance as the surface of the wooden panel 20.

[0007] Also, in the joining structure in which the steel plate as the shear resistance panel described above is fixed in the wooden panel with drift pins, in order to fix the steel plate to the wooden panel, a large number of drift pins must be constructed, and high construction accuracy is also required for the through holes for insertion, resulting in poor construction efficiency. Furthermore, when long holes are not provided for the vertical deformation of the wooden panel, it is necessary to bear the axial force generated in the wooden panel by the drift pins, and the drift pins must be increased in size to cope with it.

[0008] On the other hand, the applicant has proposed a joint structure 100 of a wooden panel using a joint member 110 as shown in FIG. 13 (the detailed configuration will be described later) (Japanese Patent Application No. 2022-200604). FIG. 14 shows the horizontal shear force Q 0 and the mechanical relationship with the joining metal fitting 110 when functioning as a shear resistance element. As shown in the figure, the joint structure 100 in which the wooden panel 120 is fixed on the beam 130 resists. That is, as shown enlarged in the figure, in the joint member 110 attached in close contact with the vertical side surface of the notch 121 at the lower end corner of the wooden panel 120, the horizontal shear force Q is the product of the contact area A (the height h of the contact surface × the plate thickness of the wooden panel 120) between the wooden panel 120 and the joint member 110 and the bearing strength σ of the wooden panel 120 0 resists. Therefore, the design of the joint member 110 as the joint structure 100 is performed so that Q 0 < A×σ. In this case, the dimensions of the joint member 110 are often restricted from the viewpoint of workability, and the horizontal shear resistance Q integrated with the wooden panel 120 on the flange surface of the beam 130 eIt has been found that it is preferable to install an additional shear resistance element (connection metal 20) that can ensure this.

[0009] In consideration of the above circumstances, the present invention aims to provide a joining member for wood panels as a resistance element that can eliminate the problems associated with the above-mentioned conventional technology, enable wood panels to be joined and installed with high construction precision, and enable the completed joint structure to reliably resist horizontal shear forces and axial forces, and a joint structure using the same. [Means for solving the problem]

[0010] The joining member for a wood panel of the present invention has at least a side panel that is in surface contact with the inner surface of a cutout that is formed to form a rectangle when a portion of the underside of the wood panel is viewed from the front, and a first joining panel joined to the side panel, and is characterized in that it comprises a panel-side joining hardware that is housed and held in the cutout, a bottom plate that is fixed and held at a position on the beam member that corresponds to the panel-side joining hardware housed in the cutout when the wood panel is supported upright on the beam member, and a beam-side joining hardware that is housed in the bottom plate and has at least a second joining panel plate that is in surface contact with the first joining panel plate, and the first joining panel plate and the second joining panel plate are surface-joined to join the panel-side joining hardware and the beam-side joining hardware.

[0011] It is preferable that both the first joining surface plate and the second joining surface plate have joining through holes formed therein, and that the first joining surface plate and the second joining surface plate are joined together by fastening members inserted into the joining through holes.

[0012] It is preferable that the panel-side joint metal member is provided with the side plates so as to be in surface contact with two opposing side surfaces of the cutout portion formed in the wood panel.

[0013] It is preferable that the beam-side joint metal has a fixing through hole formed in the bottom plate and is fixed and held in a predetermined position on the beam member via a fastening member inserted into the fixing through hole.

[0014] It is preferable that the beam-side connecting hardware has a top plate that is in face-to-face contact with the cutout formed in the wood panel joined to the end opposite the end to which the bottom plate of the second connecting panel is joined.

[0015] The joint structure of a wood panel of the present invention has at least a side panel that is in surface contact with the inner surface of a cutout that is formed to form a rectangle when a portion of the underside of the wood panel is viewed from the front, and a first joining surface plate joined to the side panel, and is equipped with a panel-side joining hardware that is housed and held in the cutout, a bottom plate that is fixed and held at a position on the beam member that corresponds to the panel-side joining hardware housed in the cutout when the wood panel is supported upright on the beam member, and a beam-side joining hardware that is joined to the bottom plate and has at least a second joining surface plate that is in surface contact with the first joining surface plate, and is characterized in that the panel-side joining hardware and the beam-side joining hardware are joined to support the wood panel upright on the beam member, and horizontal shear force acting on the wood panel is transmitted to the beam member through the panel-side joining hardware and the beam-side joining hardware to resist the horizontal shear force acting on the wood panel. Effect of the Invention

[0016] According to the present invention, when a wall structure using wood panels is constructed by joining the wood panels to steel beams, etc., the wall structure including the wood panels can be constructed with high construction precision, and the horizontal shear force and axial force acting on the wood panels can be reliably transmitted to the beam members in the completed wall structure. [Brief description of the drawings]

[0017] [Figure 1] 1A is a front view and a side cross-sectional view showing a part of a wall structure constructed by joining a wood panel and a beam using joining members (first joining member and second joining member) for the wood panel. FIG. [Diagram 2] 2 is a partially enlarged front view and a side cross-sectional view showing a first joining member and a second joining member of the wood panel shown in FIG. 1. [Diagram 3] 4A and 4B are a front view and a side cross-sectional view showing one embodiment of a second joint member. [Figure 4] An explanatory diagram showing examples of the shapes of the panel-side joint metal and the beam-side joint metal that constitute the second joint member. [Diagram 5] 4A and 4B are a front view and a side cross-sectional view showing a first modified example of the second joint member shown in FIG. [Figure 6] 4A and 4B are a front view and a side cross-sectional view showing a second modified example of the second joint member shown in FIG. [Figure 7] 4A and 4B are a front view and a side cross-sectional view showing a third modified example of the second joint member shown in FIG. [Figure 8] 4A and 4B are a front view and a side cross-sectional view showing a fourth modified example of the second joint member shown in FIG. [Figure 9] 13A and 13B are a front view and a side cross-sectional view showing a fifth modified example of the second joint member shown in FIG. [Figure 10] An explanatory diagram showing the change in the degree of fixation between connecting metal members due to an increase in the horizontal shear force acting on the second connecting member. [Figure 11] FIG. 11 is a front view showing a configuration example of a wall structure when an axial force is borne by a second joint member. [Figure 12] FIG. 1 is a front view showing an example of a wall structure in which a wood panel is joined to a reinforced concrete beam. [Figure 13] FIG. 2 is a front view showing an example of a joint structure for wood panels that has already been proposed by the applicant. [Figure 14] FIG. 14 is a model diagram showing the mechanical relationship between horizontal shear force and resistance elements in the configuration example shown in FIG. 13. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of a joining member for wood panels and a joint structure using the same of the present invention will be described with reference to the attached drawings.

[0019] FIG. 1 shows a part of a wall structure 1 of a building constructed by joining wooden panels 2 to steel beams 3 using the joining member of the wood panel of the present invention. As shown in the figure, the upper and lower ends 2a, 2b of each wooden panel 2 are fixed and supported by the flange surface of the steel beam 3, and a wall structure 1 having a height that closes the space between the steel beams 3U, 3L of the upper and lower floors is constructed by joining a plurality of wooden panels 2 vertically and horizontally. As the wooden panel 2 in this embodiment, a CLT panel with general specification dimensions of about 2,100 mm in height, 1,200 mm in width, and 210 mm in thickness is used. As other wooden panels, surface materials such as LVL panels that comply with standards can also be used.

[0020] The wooden panel 2 depicted in the center of FIG. 1 has its upper and lower ends 2a, 2b sandwiched between steel beams 3U, 3L erected at the upper and lower positions, and its lower end 2b is supported upright on the lower steel beam 3L. In order to fix and hold the upper and lower ends 2a, 2b of the wooden panel 2 to the steel beams 3U, 3L at the upper and lower positions, joint metals 10 as first joint members are used at four corners of the wooden panel 2, and joint metals 20 as second joint members are used at the center positions in the width direction of the upper and lower surfaces of the wooden panel 2. The configuration of the joint metals 10 is described in detail in the above-mentioned Patent Application No. 2022-200604. The configuration of the joint metals 20 will be described later.

[0021] In this way, one wooden panel 2 is fixed to the flange faces of steel beams 3U and 3L erected above and below the panel, with mechanical stability ensured by a joint structure consisting of three metal joints 10, 20. To form the wall structure 1, on both sides of the wooden panel 2 in the center where the entire panel is drawn, two wooden panels 2 of the same shape are joined to the steel beams 3 and the wooden panel 2 with their sides in close contact with each other, using the same fixing method (Fig. 1).

[0022] The configuration of the metal joints 10 and 20 will be described below with reference to Figs. 2(a) to (d). [Configuration of metal joint 10] 2(a) and (b) show an enlarged view of one of the joint hardware 10 (the area indicated by the dashed line) provided at the four corners of the upper and lower ends 2a and 2b of the wooden panel 2 shown in FIG. 1. In this joint hardware 10, the wooden panel 2 is placed and held on the flange surface of the steel beam 3 (FIG. 2(b)) made of H-shaped steel so that the joint hardware 10 fixed at a predetermined position of the flange of the steel beam 3 fits into the notch 2c formed by cutting out two faces of the lower corner of the panel, the vertical side and the horizontal side. The joint hardware 10 is made of a hot-formed seamless square steel pipe (standard product) with equal sides of 200 mm each and cut to a length (200 mm) slightly shorter than the thickness of the wooden panel 2 (210 mm). A shuttlecock-shaped fixing bolt 15 is used as a means for attaching the joint hardware 10 to the wooden panel 2. The fixing bolt 15 is a fixing member that integrates a bolt shaft 16 and a gusset plate 17 that serves as a fixing part attached to the other end of the bolt shaft 16. The gusset plate 17 is fixed and held in a slit provided in the wood panel 2 by a number of drift pins 18 that penetrate through the thickness direction. The joint metal member 10 may be a processed member in which steel plates of a specified size are assembled into a U-shape and welded.

[0023] As shown in Figs. 1 and 2, the joint metal fittings 10 are fixed to the flange surface of the steel beam 3 (3U, 3L) facing the cutout 2c formed at the corner of the wooden panel 2 with four bolts 12 per fitting. At this time, the tip of the bolt shaft 16 of the fixing bolt 15 is nut-tightened to the upper surface of the joint metal fitting 10, so that the wooden panel 2 can be firmly fixed to the steel beam 3 via the joint metal fitting 10. The cutout 2c of the wooden panel 2 is formed with high precision along the outer shape of the joint metal fitting 10, but if a gap occurs between the cutout 2c and the joint metal fitting 10, it is preferable to fill the gap with a filling and solidifying material 19. This improves the adhesion between the joint metal fitting 10 and the wooden panel 2, and ensures the transmission of axial and shear forces between the joint metal fitting 10 and the wooden panel 2. For example, non-shrink mortar, epoxy resin, etc. are suitable as the filling and solidifying material 19.

[0024] [Configuration of metal joint 20] 2(c) and (d) show enlarged views of a metal joint 20 (indicated by a dashed line) provided at approximately the center of the width of the top and bottom surfaces 2a, 2b of the wooden panel 2 shown in Fig. 1. This metal joint 20, together with metal joints 10 provided at the four corners of the wooden panel 2, is a connecting member for realizing a strong connection between the wooden panel 2 and the steel beams 3, and also functions as a shear resistance element that resists the horizontal shear force (white arrow S) acting on the wooden panel 2 during an earthquake.

[0025] The joint hardware 20 is composed of two kinds of members, a panel-side joint hardware 21A and a beam-side joint hardware 21B. The panel-side joint hardware 21A, which is a frame-shaped member with an open bottom, is fitted into a notch 2c, which is cut into a rectangular shape when viewed from the front and has dimensions approximately equal to the outer dimensions of the joint hardware 20, at the center of the width direction of the top and bottom surfaces of the wooden panel 2, and is fixed and held in close contact with the inner surface of the notch 2c with screws (not shown). On the other hand, the beam-side joint hardware 21B is fixed to the top surface of the flange of the steel beam 3 (3L) with high-strength bolts 31 as fastening members, as shown in FIG. 2(c). The panel-side joint hardware 21A attached to the side of the wooden panel 2 and the beam-side joint hardware 21B attached to the top surface of the flange of the steel beam 3 (3L) are bolted together with four high-strength bolts 32, and the top and bottom surfaces of the wooden panel 2 are fixed to the steel beams 3U and 3L (FIG. 1) located above and below them.

[0026] The overall configuration of the joint metal 20 and the individual configurations of the panel-side joint metal 21A and the beam-side joint metal 21B before joining will be described below with reference to Figures 3 and 4. The panel-side joint metal 21A and the beam-side joint metal 21B shown in Figure 4 are joined by four high-strength bolts 32 at their joining face plates 25A, 25B, which are in surface contact, as shown in Figures 3(a) and (b).

[0027] The panel side joint metal 21A is a steel plate assembly member that has a frame shape with an open bottom and whose outer surface can be in close contact with the entire inner surface on three sides of the cutout portion 2c formed in the bottom surface of the wood panel 2. As shown in Figs. 4(a-1) and (a-2), the panel side joint metal 21A of this embodiment is a steel plate assembly member that is assembled by forming two side panels 22 (height 225 mm, width 200 mm, plate thickness 25 mm) and a top panel 23 (length 175 mm, width (width) 200 mm, plate thickness 16 mm) into an inverted U-shaped frame shape with an open bottom, and positioning a joint surface plate 25A (height 160 mm, width 175 mm, plate thickness 16 mm) at approximately the center of the width direction inside (Fig. 4(a-3)) and welding each joint portion. Four joint bolt holes 27 are formed in the joint surface plate 25A (Figs. 4(a-1) and (a-3)). The type of steel used in this embodiment is rolled steel for architectural structures (SN490B), but it is preferable to select a steel type and strength sufficient to function as a shear resistance element against the horizontal shear force acting.

[0028] As shown in Figures 4(b-1) to (b-3), the beam-side joint metal 21B is a steel plate assembly member assembled by welding each joint portion to a joint face plate 25B (height 165 mm, width 130 mm, plate thickness 16 mm) at approximately the center of the width direction of a bottom plate 26 (length 171 mm, width (width) 200 mm, plate thickness 22 mm) so as to form an inverted T shape in side view. The bottom plate 26 has four bolt holes 28 formed therein for fixing the beam-side joint metal 21B to the flange surface of the steel beam 3 (Figure 4(b-3)). In addition, the connecting panel 25B has four connecting bolt holes 29 formed therein corresponding to the connecting bolt holes 27 of the connecting panel 25A of the panel side connecting hardware 21A (Figure 4(b-1)). By adjusting the alignment of the connecting bolt holes 27 of the panel side connecting hardware 21A arranged on the wood panel 2 with the connecting bolt holes 29 of the beam side connecting hardware 21B, it is possible to fine-tune the installation position of the wood panel 2 relative to the steel beam 3. Note that the dimensions of each part of the panel side connecting hardware 21A and the beam side connecting hardware 21B described above are merely examples, and it goes without saying that the dimensions will be appropriately set to be sufficient as a shear resistance element depending on the dimensions of the wood panel and the horizontal shear force acting on it.

[0029] [Configuration of modified example of second joining member] Each of the joint metals 210-250 shown in Fig. 5(a), (b) to Fig. 9(a), (b) shows a modified example of the joint metal 20 as the second joint member. Each of the joint metals 210-250 is composed of a panel side joint metal 210A-250A and a beam side joint metal 210B-250B, and has in common that the joint face plates 215A-255A, 215B-255B, which are part of each member, are surface-joined by bolt joints, and improvements and ingenuity have been made in the workability of the joint metal and the ease of assembly to the wood panel and beam flange. The configuration and features of each of the joint metals 210-250 will be briefly described below.

[0030] Figures 5(a) and (b) show a joint metal 210 having a shape with relatively low component rigidity by reducing the planar dimensions of the top plate 213 of the panel-side joint metal 210A and the planar dimensions of the bottom plate 216 of the beam-side joint metal 21B compared to the shape of the joint metal 20 in the basic shape shown in Figures 3(a) and (b), assuming a wall structure in which the generated horizontal shear force is relatively small. The joining format of the joining face plates 215A, 215B is the same as in the case of the basic shape of the joint metal 20 (Figure 3(a)).

[0031] In the joint hardware 220 shown in Fig. 6(a) and (b), a steel plate assembly member with an H-shaped cross section is used as the beam side joint hardware 220B. The lower flange of the beam side joint hardware 220B is bolted to the flange surface of the steel beam 3 as the bottom plate 226, and the upper flange of the beam side joint hardware 220B is closely fixed to the upper surface of the notch 2c of the wood panel 2 as the top plate 223. A ready-made H-shaped steel can also be used as the beam side joint hardware 220B. In that case, the web of the H-shaped steel functions as the joint surface plate 225B, and the center line of the joint surface plate 225B in the thickness direction can be aligned with the center line of the wood panel 2 in the thickness direction. As the panel side joint hardware 220A, a pair of steel plate assembly members is used, in which the joint surface plate 225A and the side plate 222 form a T shape in plan view. With the side panels 222 of each panel-side connecting hardware 220A in close contact with the inner surface of the cutout 2c of the wood panel 2, as shown in Figure 6(b), the connecting surface plate 225B (web) of the beam-side connecting hardware 220B is sandwiched on both sides by the connecting surface plates 225A of the panel-side connecting hardware 220A, and the three connecting surface plates 225A, 225B, 225A (Figure 6(b)) are surface-joined with high-strength bolts 32 to form a single unit.

[0032] 7(a) and (b), a steel plate assembly member consisting of a bottom plate 236 and a joining surface plate 235B that are inverted T-shaped when viewed from the side is used as the beam-side joining metal fitting 230B. Two members are used as the panel-side joining metal fitting 230A: a steel plate assembly member with an H-shaped cross section that is used horizontally so that the flanges are in close contact with both sides of the cutout portion 2c of the wood panel 2, and a steel plate assembly member of the same shape as the beam-side joining metal fitting 220B that joins the top plate 233 and the joining surface plate 235B to form a T shape. The bottom plate 236 of the beam-side connecting hardware 230B is bolted to the flange of the steel beam 3, and the connecting panel 235C (web) of the steel plate assembly member having an H-shaped cross section is sandwiched on both sides between the connecting panel 235A of the panel-side connecting hardware 230A and the connecting panel 235B of the beam-side connecting hardware 230B, and the three connecting panel plates 235A, 235C, 235B are surface-joined together with high-strength bolts to form a single unit.

[0033] In the connecting hardware 240 shown in Figures 8(a) and (b), a steel plate assembly member with an H-shaped cross section of the same shape as the connecting hardware 220B is used as the beam-side connecting hardware 240B, and is fixed in close contact with the flange surface of the steel beam 3 and the upper surface of the cutout portion 2c of the wood panel 2 in a similar fixing manner. Like the joining hardware 220A, the panel-side joining hardware 240A also uses a pair of steel plate assembly members consisting of a joining panel 245A and a side panel 242 that form a T-shape when viewed in a plane, but the width of this joining panel 245A is approximately 1 / 2 the width of the cutout, as shown in Figure 8(a), and with each side panel 242 of the two panel-side joining hardware 240A in close contact with the inner surface of the cutout 2c of the wood panel 2, as shown in Figure 8(b), the joining panel panel 245B (web) of the beam-side joining hardware 240B is attached from one side to the joining panel panel 245A of the panel-side joining hardware 240A, and the two joining panel panels 245A, 245B are surface-joined together with high-strength bolts.

[0034] In the joint metal 250 shown in Fig. 9(a) and (b), the beam side joint metal 250B is a steel plate assembly member similar to the joint metal 220B and 240B, and is fixed in a similar manner to the flange surface of the steel beam 3 and the upper surface of the notch 2c of the wood panel 2. The major difference from each of the joint metals 210 to 240 described above is that instead of using an H-shaped steel material 255B (web) as a joint surface plate, a horizontal gusset plate 255C for joint is further attached to the web. On the other hand, a pair of steel plate assembly members is used as the panel side joint metal 250A, consisting of a joint surface plate 255A that is horizontal when viewed from the front and a side plate 252 that can be in close contact with the inner surface of the notch 2c, forming a T-shape. The joint surface plate 255A has a slit 255s that can sandwich the entire width of the web of the beam side joint metal 250B. Furthermore, the joining surface plate 255A of the panel-side joining hardware 250A and the horizontal gusset plate 255C of the beam-side joining hardware 250B are formed with bolt holes (not shown) through which the high-strength bolts 32 shown in each drawing in Fig. 9 can pass. Therefore, the beam-side joining hardware 250B and the panel-side joining hardware 250A are formed by stacking three sheets, the horizontal gusset plate 255C of the beam-side joining hardware 250B and the two joining surface plates 255A of the panel-side joining hardware 250A, and joining the three sheets together by the high-strength bolts 32 to form an integrated unit.

[0035] Each figure in Fig. 10 is an explanatory diagram showing the change in the degree of fixation between the members constituting the joint metal 20 (Fig. 3(a)) as the second joint member of the present invention with the increase in the horizontal shear force S when the horizontal shear force S acts on the joint metal 20 (Fig. 3(a)) during an earthquake. The horizontal shear force S, which is almost uniformly distributed during an earthquake, acts on the entire surface of the side plate 22 of the joint metal 20 from the wood panel 2, as shown in Fig. 10(a). At this time, the side plate 22 is fixed at two sides of the T-shaped top plate 23 and the joint surface plate 25A welded to the side plate 22, as shown in color in Fig. 10(b-1), and bears the horizontal shear force S that acts. As the load action progresses, the lower end 22a (Fig. 10(a)) of the side plate 22 in a cantilever state is slightly elastically deformed toward the bottom plate 26 of the beam side joint metal 21B, and the lower end 22a of the side plate 22 comes into contact with the end face 26c of the bottom plate 26. 10(b-2), the side plate 22 is supported by three sides, the top plate 23, the connecting face plate 25A, and the bottom plate 26. This has the effect of improving the rigidity and strength of each steel material constituting the connecting metal fitting 20 at the ultimate state.

[0036] [Modification of the support form of the metal joint 20] FIG. 11 is a front view showing a wall structure 1 to which a joint metal 20 as a shear resistance element is attached with the additional function of a tension resistance element. In a joint structure for supporting a wooden panel 2 with a steel beam 3, the joint metal 20 of the present invention is attached so as to make surface contact (surface touch) with the inner peripheral surface of a cutout formed in the wooden panel 2. Therefore, it is not designed to bear the tensile force generated in this joint structure. Therefore, in order to be able to bear the tensile force, it is preferable to add shuttlecock-shaped fixing bolts 15 used as means for attaching the joint metal 10 located at the four corners of the wooden panel 2 to the wooden panel 2 as a tension resistance element to the joint metal 20 as shown in FIG. 11. For this purpose, the shuttlecock part of the shuttlecock-shaped fixing bolt 15 is drift-pin-joined and buried so that the tip of the bolt shaft 16 of the fixing bolt 15 is located at the position where the joint metal 20 is to be installed. After the connecting metal fitting 20 is fixed, the tip of the bolt shaft 16 of the fixing bolt 15 protruding from the upper surface of the connecting metal fitting 20 can be fixed with a nut, thereby adding a tensile resistance element to the connecting metal fitting 20.

[0037] (Setting the aspect ratio and resistance elements of wood panels) According to the second connecting member of the present invention, the connecting metal 20, which has a rectangular outer shape, is accommodated and fixed in a rectangular cutout of the same shape provided in the wooden panel by surface contact, and is therefore highly effective as a shear force resistance element, and is characterized by not bearing the axial force (tensile force) acting in the vertical direction at the same time.In contrast, when the wooden panel is long in the vertical direction, it is preferable to design the connecting metal 20 by determining what kind of resistance function against acting forces the connecting metal 20 as the second connecting member should have, taking into consideration the installation position of the connecting metal 20 (which can be expressed as the ratio of the distance to the corner part to the panel width) and the aspect ratio of the wooden panel.

[0038] That is, when a wooden panel is long in length with its height greater than its width, if a shear resistance element (shear key) is provided near the center of the width of the wooden panel, the wooden panel will rotate and displace even when the horizontal displacement of the upper end of the wooden panel is small, causing the lower surface of the wooden panel to lift up and separate from the steel beam. To prevent this, it is preferable to provide a tensile resistance element such as a fixing bolt (tensile steel material) in the wooden panel and connect this tensile resistance element to the shear key. This makes it possible to prevent the wooden panel from lifting up. In this way, the second joint member of the present invention can be designed to function as the following three types of resistance elements. (1) Shear resistance element (between the two sides of the wooden panel) (2) Shear + compression resistance element (between the two sides of the wood panel and the top surface) (3) Shear + compression / tension resistance element (two sides of the wood panel, between the top and bottom, tensile steel) In the case of a wall shape in which the width of the wood panel is greater than the height, it is preferable to provide a plurality of metal joints 20 along the width direction on the upper and lower surfaces of the wood panel.

[0039] FIG. 12 shows the configuration of the joint structure in the wall structure 1 in which the wooden panel 2 is installed on the concrete slab 7 on the reinforced concrete beam 6 in a reinforced concrete building. As an example, the concrete slab thickness t is set to t=200 mm. As shown in the figure, the joint metal 10 is fixed and held on the slab surface 7a and the beam under position 6a by using the penetration bolt 8A that penetrates the concrete slab 7 and the reinforced concrete beam 6 and the anchor bolt 8B that has a fixing part in the concrete. The joint metal 20 is fixed and held in a predetermined position on the slab surface 7a and the beam under position 6a by the post-installed anchor bolt 9 installed from each installation surface, and the wooden panel 2 is installed so as to close the gap between the concrete slab surface 7a and the beam under position 6a of the reinforced concrete beam 6 by the joint metal 10, 20. It is preferable to fill the gap generated between the installation points of the joint metal 10, 20 and the wooden panel 2 with a filling solidification material (not shown). This increases the rigidity and strength of the metal joints 10, 20. In the present invention, construction is performed so that no gaps occur between the reinforced concrete beam 6 and the metal joints 10, 20, but if a gap does occur, it is preferable to close the gap using a filler plate (not shown) with a thickness equivalent to the gap. Mortar, epoxy resin, etc. can be used as the filling and solidifying material. It is also preferable to consider the closing of gaps not only between reinforced concrete beams but also between steel beams.

[0040] The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the claims. In other words, the technical scope of the present invention also includes embodiments obtained by combining technical means that are appropriately modified within the scope of the claims. [Explanation of symbols]

[0041] 1 Wall structure 2(2a,2b) Wood panel (top, bottom) 2c Notch 3 (3U, 3L) Steel beams (upper beam, lower beam) 6. Reinforced concrete beams 7. Concrete slab 10,20,210~250 Metal joints 21A, 210A~250A Panel side joint metal 21B, 210B~250B Beam side joint metal 25A,25B Joint face plate 215A~255A,215B~225B Joint face plate 235C,255C joining face plate 31,32 High strength bolts

Claims

1. a side plate that is in surface contact with an inner surface of a cutout portion that is formed to have a rectangular shape when viewed from the front of a part of the lower surface of the wood panel, and a first joining surface plate that is joined to the side plate, and a panel-side joining metal fitting that is housed and held within the cutout portion; a bottom plate that is fixedly held at a position on the beam member corresponding to the panel-side metal joint housed in the cutout when the wood panel is supported upright on the beam member, and a beam-side metal joint having at least a second metal joint surface plate that is joined to the bottom plate and can come into surface contact with the first metal joint surface plate; A joining member for wood panels, characterized in that the first joining surface plate and the second joining surface plate are surface-joined to join the panel-side joining metal fitting and the beam-side joining metal fitting.

2. The joining member for wood panels according to claim 1, wherein the first joining surface plate and the second joining surface plate both have joining through holes formed therein and are joined by fastening members inserted into the joining through holes.

3. 2. A joining member for wood panels according to claim 1, wherein the panel-side joining metal fitting has side plates provided so as to be in surface contact with two opposing side surfaces of a cutout portion formed in the wood panel.

4. A joining member for wood panels as described in claim 1, wherein the beam side joining hardware has a fixing through hole formed in the bottom plate and is fixed and held in a predetermined position on the beam member via a fastening member inserted into the fixing through hole.

5. The beam side connecting metal member is a connecting member for wood panels as described in claim 1, in which a top plate that makes face contact with the cutout formed in the wood panel is connected to the end opposite to the end to which the bottom plate of the second connecting panel is connected.

6. a side plate that is in surface contact with an inner surface of a cutout portion that is formed to have a rectangular shape when viewed from the front of a part of the lower surface of the wood panel, and a first joining surface plate that is joined to the side plate, and a panel-side joining metal fitting that is housed and held within the cutout portion; a bottom plate that is fixedly held at a position on the beam member corresponding to the panel-side metal joint housed in the cutout when the wood panel is supported upright on the beam member, and a beam-side metal joint having at least a second metal joint surface plate that is joined to the bottom plate and can come into surface contact with the first metal joint surface plate; A joint structure for a wood panel, characterized in that the panel-side joint metal and the beam-side joint metal are joined to support the wood panel upright on the beam member, and the horizontal shear force acting on the wood panel is transmitted to the beam member through the panel-side joint metal and the beam-side joint metal to resist the horizontal shear force acting on the wood panel.

Images