Panel joining structure and panel joining method

Abstract

To provide a panel joining structure and a panel joining method for enhancing workability in joining a panel body to a support surface of a support.SOLUTION: A panel joining structure 1 for joining a panel body 20 to a support body 10 includes a recessed portion 12 provided in the support body 10 and having an opening portion 12a opened to a support surface 11 provided on a surface of the support body 10 and locking surfaces 12b1 and 12b2 provided between the opening portion 12a and a bottom surface 12c and facing a side of the bottom surface 12c, and a panel body 20 provided to protrude from an end surface 21 of the panel body 20. The panel joining structure 1 and the panel joining method are characterized by having a projection part 22 formed in a size to be housed inside the opening part 12a and having locked surfaces 2a1 and 2a2 directed to the side of the end surface 21 and a grout material 30 filled in a gap between the recessed part 12 and the projection part 22.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a panel joining structure and a panel joining method for joining a panel body to a support body. [Background technology]

[0002] For example, it is known to construct floors and walls by joining panels (plate-shaped building materials) made of wooden boards such as CLT (Cross Laminated Timber) or precast concrete to a support such as the floor of a building.

[0003] Conventionally, a known panel joining structure or method for joining a panel body to a support body is one in which a plurality of recesses are provided on a support surface provided on the surface of the support body, and a plurality of protrusions having shapes corresponding to the plurality of recesses are provided on the end surface of the panel body, and these plurality of protrusions are fitted into the corresponding recesses, and a cylindrical engaging member is inserted into a hole formed by the protrusions and recesses to engage the protrusions with the recesses (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-161813 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional panel joining structures or panel joining methods, in order to join the panel body to the support body without rattle, it is necessary to precisely form the protrusion into a shape that fits snugly into the recess, and there is also the problem that it is not possible to fine-tune the position of the panel body after the protrusion has been fitted into the recess, so there is a demand for improvements in workability.

[0006] The present invention has been made in consideration of such problems, and its purpose is to provide a panel joining structure and a panel joining method that improve the ease of construction when joining a panel body to a support body. [Means for solving the problem]

[0007] The panel joining structure of the present invention is a panel joining structure for joining a panel body to a support body, characterized in that it has: a recess provided on the support body, having an opening that opens onto a support surface provided on the surface of the support body, and a locking surface provided between the opening and the bottom surface and facing the bottom surface; a protrusion provided on the end surface of the panel body, formed to a size that can fit inside the opening and having an locking surface facing the end surface; and grout material filled in the gap between the recess and the protrusion.

[0008] In the panel joining structure of the present invention, in the above configuration, it is preferable that the recess comprises a rectangular opening, a rectangular bottom surface larger than the opening, a first engaging surface extending at an angle from one side of the opening toward one side of the bottom surface, and a second engaging surface extending at an angle opposite to the first engaging surface from the other side opposite the one side of the opening toward the other side opposite the one side of the bottom surface, and that the protrusion comprises a rectangular lower end surface smaller than the opening, a first engaged surface extending from the end surface toward one side of the lower end surface parallel to the first engaging surface, and a second engaged surface extending from the end surface toward the other side opposite the one side of the lower end surface parallel to the second engaging surface.

[0009] In the panel joint structure of the present invention having the above-described configuration, it is preferable that the width of the opening is formed wider than the width of the end face, and that a part of the opening is closed by a cover plate.

[0010] The panel joining method of the present invention is a panel joining method for joining a panel body to a support body, and is characterized by comprising the steps of: providing a recess in the support body, the recess having an opening that opens to a support surface provided on the surface of the support body and an engaging surface provided between the opening and a bottom surface and facing the bottom surface; providing a protrusion on an end surface of the panel body that is sized to fit inside the opening and has an engaging surface facing the end surface; inserting the protrusion into the recess and positioning it inside the recess; and filling the gap between the recess and the protrusion with grout material. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a panel joining structure and a panel joining method that improve workability when joining a panel body to a support body. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing a panel joining structure according to one embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional view of a main part of the panel joint structure shown in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along line BB in FIG. [Figure 5] FIG. 2 is a perspective view showing a state before the panel body is joined to the support body. [Figure 6] 10A to 10C are diagrams illustrating an example of a method for forming a recess. [Figure 7] 10(a) to 10(c) are diagrams showing other examples of methods for forming recesses. [Figure 8] 10(a) and 10(b) are diagrams showing modified examples of the core. [Figure 9] FIG. 10 is a diagram showing a state before the protrusion of the panel body is inserted into the recess of the support body. [Figure 10] 10 is a diagram showing a state in which the protrusion of the panel body is inserted into the recess of the support body and placed inside the recess. FIG. [Figure 11] 10 is a diagram showing a state in which a gap between the recess and the protrusion is filled with grout material. FIG. [Figure 12] 10 is a view showing a state in which a part of the opening is closed by a cover plate. FIG. [Figure 13] FIG. 10 is a perspective view showing a panel joining structure according to a modified example. [Figure 14] 14 is a view of the main part of the panel joint structure shown in FIG. 13 as viewed from the arrow C. FIG. [Figure 15] 14 is a view of the main part of the panel joint structure shown in FIG. 13 as viewed from the arrow D. FIG. [Figure 16] FIG. 10 is a perspective view showing a panel joining structure according to another modified example. [Figure 17] 17 is a cross-sectional view taken along line EE of the panel joint structure shown in FIG. 16. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A panel joining structure and a panel joining method according to an embodiment of the present invention will now be described in detail with reference to the drawings.

[0014] As shown in FIG. 1, a panel joint structure 1 according to one embodiment of the present invention is a structure in which a panel body 20 is joined to a support body 10.

[0015] The support body 10 is a member that supports the panel body 20 by joining the panel body 20 to a support surface 11 provided on the surface of the support body 10. In this embodiment, the support body 10 is a floor of a building (not shown) made of precast concrete.

[0016] The support body 10 is not limited to being made of precast concrete, but may be made of cast-in-place concrete, or may be made of other materials such as wood boards such as CLT (Cross Laminated Timber).The support body 10 is also not limited to being a floor of a building, and may be any other member or part that supports the panel body 20, such as a part of a wall of a building.

[0017] The panel body 20 is a member joined to the support body 10 at an end surface 21 and supported by the support body 10. In this embodiment, the panel body 20 is formed from a wooden board material such as CLT and forms a wall of a building.

[0018] The panel body 20 is not limited to being made of wood boards, but may be made of other materials such as precast concrete. The panel body 20 is also not limited to being a component of a building wall, but may be any other member or part that can be joined to and supported by the support body 10.

[0019] As shown in Figures 2, 3, and 4, the panel joint structure 1 includes recesses 12 provided in the support body 10, protrusions 22 protruding from the end surface 21 of the panel body 20, and grout material 30 filling the gaps between the recesses 12 and the protrusions 22. As shown in Figure 5, in this embodiment, seven recesses 12 are arranged in a straight line at equal intervals on the support surface 11 of the support body 10, and seven protrusions 22 corresponding to the seven recesses 12 are arranged in a straight line at equal intervals on the end surface 21 of the panel body 20. By arranging multiple recesses 12 and protrusions 22 in a line, the joint strength of the panel body 20 to the support body 10 can be increased. Note that the number of recesses 12 and protrusions 22 can be appropriately changed depending on the required joint strength. Since the seven recesses 12 and the seven protrusions 22 are identical in shape, the shape of one recess 12 and one protrusion 22 will be described below.

[0020] As shown in Figures 2, 3 and 4, the recess 12 has an opening 12a that opens to the support surface 11, and a first engaging surface 12b1 and a second engaging surface 12b2 that are provided between the opening 12a and the bottom surface 12c and face the bottom surface 12c.

[0021] In this embodiment, the recess 12 is a hole recessed into the support surface 11 so as to expand outward from the opening 12a toward the inside of the support body 10, and is provided with a rectangular opening 12a, a rectangular bottom surface 12c larger than the opening 12a, a first engagement surface 12b1 extending at an angle from one side of the opening 12a toward one side of the bottom surface 12c, a second engagement surface 12b2 extending at an angle in the opposite direction to the first engagement surface 12b1 from the other side opposite to the one side of the opening 12a toward the other side opposite to the one side of the bottom surface 12c, and a pair of side surfaces 12d connected to the opening 12a, the bottom surface 12c, the first engagement surface 12b1, and the second engagement surface 12b2, respectively.

[0022] The opening 12a is rectangular in shape, with its length in the direction in which the seven recesses 12 are arranged (a direction parallel to both the support surface 11 of the support body 10 and the surface 23 perpendicular to the end face 21 of the panel body 20) being greater than its width in the direction perpendicular to the direction in which the seven recesses 12 are arranged. The width of the opening 12a is also greater than the width of the end face 21 of the panel body 20, and a portion of the opening 12a is closed by a cover plate 13 fitted into the opening 12a adjacent to the panel body 20. The bottom surface 12c is longer than the opening 12a, has the same width as the opening 12a, and is a flat rectangle parallel to the support surface 11. The first locking surface 12b1 and the second locking surface 12b2 are each flat rectangles. First locking surface 12b1 is inclined at a constant inclination angle between one longitudinal side of opening 12a and one longitudinal side of bottom surface 12c so as to face a direction inclined at an angle greater than 90 degrees and equal to or less than 180 degrees with respect to the direction in which support surface 11 faces. Second locking surface 12b2 is inclined at a constant inclination angle between the other longitudinal side of opening 12a and the other longitudinal side of bottom surface 12c so as to face a direction inclined at an angle greater than 90 degrees and equal to or less than 180 degrees with respect to the direction in which support surface 11 faces. The areas between opening 12a and first locking surface 12b1, between opening 12a and second locking surface 12b2, between first locking surface 12b1 and bottom surface 12c, and between second locking surface 12b2 and bottom surface 12c may each be chamfered into a curved shape. The pair of side surfaces 12d each have a flat trapezoidal shape, are parallel to each other, and are perpendicular to the support surface 11. The corners of the opening 12a and the like may each be a pin angle.

[0023] In this embodiment, the recess 12 is a hole with a substantially trapezoidal cross section in which the first engagement surface 12b1 and the second engagement surface 12b2 are inclined in opposite directions, but this is not limited to this and the recess 12 can have various shapes as long as it has an opening and an engagement surface provided between the opening and the bottom surface and facing the bottom surface.

[0024] The protrusion 22 has engaging surfaces 22a1, 22a2 facing the end face 21, and is formed to a size that fits inside the opening 12a when viewed from a direction perpendicular to the end face 21, and is arranged inside the recess 12.

[0025] In this embodiment, the protrusion 22 has a rectangular lower end surface 22b that is smaller than the opening 12a, a first engaged surface 22a1 that extends parallel to the first engaged surface 12b1 from the end surface 21 toward one side of the lower end surface 22b, a second engaged surface 22a2 that extends parallel to the second engaged surface 12b2 from the end surface 21 toward the other side opposite the one side of the lower end surface 22b, and a pair of side surfaces 22c that are connected to the end surface 21, the lower end surface 22b, the first engaged surface 22a1, and the second engaged surface 22a2, respectively.

[0026] The lower end surface 22b is a flat rectangle parallel to the end surface 21, slightly shorter in length and narrower in width than the opening 12a. The first and second locked surfaces 22a1 and 22a2 are each a flat rectangle. The first locked surface 22a1 is inclined at a constant angle between the end surface 21 and one side of the lower end surface 22b in the longitudinal direction so as to face a direction inclined at an angle of more than 90 degrees and not more than 180 degrees with respect to the direction in which the end surface 21 faces. The second locked surface 22a2 is inclined at a constant angle between the end surface 21 and the other side of the lower end surface 22b in the longitudinal direction so as to face a direction inclined at an angle of more than 90 degrees and not more than 180 degrees with respect to the direction in which the end surface 21 faces. The portions between end face 21 and first locked surface 22a1, between end face 21 and second locked surface 22a2, between first locked surface 22a1 and lower end face 22b, and between second locked surface 22a2 and lower end face 22b may be chamfered into a curved shape. A pair of side surfaces 22c each have a flat trapezoidal shape and are parallel to each other and perpendicular to end face 21.

[0027] In this embodiment, the protrusion 22 has an approximately inverted trapezoidal shape with the first engaging surface 22a1 and the second engaging surface 22a2 inclined in opposite directions to each other, but this is not limited to this and the protrusion 22 can have various shapes as long as it is formed to a size that fits inside the opening 12a and has an engaging surface facing the end face.

[0028] The grout material 30 is filled in the gap between the recess 12 and the protrusion 22. In this embodiment, the grout material 30 contacts the first engaging surface 12b1 and the first engaged surface 22a1, and also contacts the second engaging surface 12b2 and the second engaged surface 22a2. The grout material 30 is filled in the gap between the recess 12 and the protrusion 22 in a fluid pre-hardening state so as to fill the gap, and then hardens to assume a shape corresponding to the gap. The grout material 30 is preferably filled or arranged in the gap between the recess 12 and the protrusion 22 without creating any voids. It is preferable to use a non-shrink grout material such as mortar as the grout material 30, but this is not limited thereto.

[0029] In this embodiment, before a portion of the opening 12a adjacent to the panel body 20 that opens to the outside is closed by the cover plate 13, the pre-hardened grout material 30 is filled from that portion of the opening 12a into the gap between the recess 12 and the protrusion 22. Note that if the opening 12a is configured so that it does not open to the outside when the protrusion 22 is placed in the recess 12, for example by forming it to have the same width as the panel body 20, a filling hole that communicates with the gap between the recess 12 and the protrusion 22 may be provided in the support body 10 or the panel body 20, and the grout material 30 may be filled into the gap through that filling hole.

[0030] 2, the grout material 30 hardened in the gap between the recess 12 and the protrusion 22 is in contact with the first engaging surface 12b1 and the second engaging surface 12b2 facing the bottom surface 12c, and thus movement in the removal direction relative to the recess 12, i.e., movement in a direction perpendicular to the support surface 11 and away from the bottom surface 12c, is restricted. Furthermore, the protrusion 22 arranged inside the recess 12 is in contact with the grout material 30, whose movement in the removal direction relative to the recess 12 is restricted, i.e., movement in a direction perpendicular to the support surface 11 and away from the bottom surface 12c, through the first engaged surface 22a1 and the second engaged surface facing the end surface 21. In this way, inside the recess 12, the first locked surface 22a1 and the second locked surface 22a2 are locked to the first locking surface 12b1 or the second locking surface 12b2 via the grout material 30, so that the protrusion 22 of the panel body 20 is restricted from moving in a direction to come out of the recess 12 and is held inside the recess 12. Furthermore, since the grout material 30 is arranged without any gaps between the first locking surface 12b1 and the first locked surface 22a1 and between the second locking surface 12b2 and the second locked surface 22a2, movement of the protrusion 22 in the length direction relative to the recess 12 (directions parallel to both the support surface 11 of the support body 10 and the surface 23 perpendicular to the end face 21 of the panel body 20) is also restricted. Furthermore, the grout material 30 is filled without any gaps between one side surface 22c of the protrusion 22 and one side surface 12d of the recess 12, and between the other side surface 22c of the protrusion 22 and the other side surface 12d of the recess 12, respectively, thereby restricting movement of the protrusion 22 in the width direction relative to the recess 12. Therefore, the panel body 20 is joined at the end surface 21 to the support surface 11 of the support body 10 by fixing the seven protrusions 22 arranged inside the corresponding recesses 12 to the corresponding recesses 12 with the grout material 30. Note that a configuration may also be adopted in which one side surface 22c of the protrusion 22 and one side surface 12d of the recess 12 are abutted against each other, and the grout material 30 is filled only between the other side surface 22c of the protrusion 22 and the other side surface 12d of the recess 12.

[0031] The panel joining structure 1 according to this embodiment having the above configuration can be constructed by a panel joining method according to one embodiment of the present invention. Below, a procedure for constructing the panel joining structure 1 by joining the panel body 20 to the support surface 11 of the support body 10 using the panel joining method according to this embodiment will be described.

[0032] First, the support body 10 is provided with an opening 12a that opens onto a support surface 11 provided on the surface of the support body 10, and a recess 12 that is provided between the opening 12a and the bottom surface 12c and has a first engaging surface 12b1 and a second engaging surface 12b2 that face the bottom surface 12c, and a protrusion 22 that is formed to a size that can fit inside the opening 12a and has a first engaging surface 22a1 and a second engaging surface 22a2 that face the end surface 21.

[0033] The process of providing a recess 12 on the support surface 11 of the support body 10 and the process of providing a protrusion 22 on the end surface 21 of the panel body 20 may be carried out simultaneously in parallel, or one of them may be carried out first, or they may be carried out at different locations at different times.

[0034] Regarding the step of providing recesses 12 on support surface 11 of support body 10, when support body 10 is made of precast concrete or wood board, recesses 12 can be formed by cutting support surface 11 of support body 10 using an NC-controlled processing device 40, as shown in FIG. 6. In this case, for example, processing device 40 having a flared blade 42 fixed to the tip of a rotating shaft 41 is used, and cutting is performed by moving blade 42 along the path shown by the dashed line in FIG. 6, thereby automatically and easily forming recesses 12 having a shape including first engaging surface 12b1 and second engaging surface 12b2 facing the bottom surface 12c. Note that recesses 12 may also be formed by cutting support surface 11 using a processing device with a configuration different from that of processing device 40 described above.

[0035] As shown in FIG. 7, when the support body 10 is made of precast concrete, a core 50 having a shape corresponding to the recess 12 may be placed in the cavity of the mold when the support body 10 is formed from concrete using a mold, thereby forming the recess 12 in the support body 10. In this case, the core 50 can be disassembled into a rectangular block-shaped portion 51 having a size corresponding to the opening 12a of the recess 12 and a pair of triangular portions 52 disposed adjacent to both sides of the rectangular block-shaped portion 51 and having inclined surfaces corresponding to the first and second locking surfaces 12b1 and 12b2, respectively. As a result, as shown in FIG. 7(a), the core 50 combining the rectangular block-shaped portion 51 and the pair of triangular portions 52 can be used for molding to form the recess 12 in the support body 10 having the first and second locking surfaces 12b1 and 12b2 facing the bottom surface 12c. After the recess 12 is formed, as shown in FIG. 7(b), only the rectangular block-shaped portion 51 is first removed from the recess 12 through the opening 12a, and then, as shown in FIG. 7(c), the pair of triangular portions 52 are removed from the recess 12 through the opening 12a, thereby making it possible to easily remove the core 50 from the recess 12 having a shape with a first locking surface 12b1 and a second locking surface 12b2 facing the bottom surface 12c.

[0036] 8, core 50 can also be configured such that rectangular block-shaped portion 51 has guide grooves 51a on both sides, triangular-shaped portion 52 has guide rails 52a that engage with guide grooves 51a, and triangular-shaped portions 52 are assembled to both sides of rectangular block-shaped portion 51 so that they can move relatively up and down due to the engagement between guide grooves 51a and guide rails 52a. This makes it easier to maintain core 50 in a predetermined shape corresponding to recess 12, and also makes it easier to remove core 50 from recess 12 after molding. Note that recess 12 may be formed by a molding method other than the above, even when support body 10 is made of precast concrete.

[0037] Regarding the step of providing the protrusions 22 on the end surfaces 21 of the panel body 20, if the panel body 20 is made of precast concrete or a wooden board, the protrusions 22 can be formed by cutting the panel body 20 using, for example, a processing device (not shown) similar to that shown in FIG. 6. Also, if the panel body 20 is made of precast concrete, the panel body 20 having the protrusions 22 can be molded using a forming mold. Note that the method of forming the protrusions 22 on the panel body 20 is not limited to the above.

[0038] Once the recesses 12 are formed in the support body 10 and the protrusions 22 are formed in the panel body 20, the panel body 20 is then held upright with its end face 21 facing the support surface 11 of the support body 10, and the seven protrusions 22 are positioned above the corresponding recesses 12, as shown in Figures 5 and 9. Then, from this state, the panel body 20 is moved downward toward the support body 10, and as shown in Figure 10, each protrusion 22 is inserted into the corresponding recess 12 through the opening 12a and positioned inside the recess 12. At this time, because the lower end face 22b of each protrusion 22 is smaller than the opening 12a of the corresponding recess 12, the seven protrusions 22 can be easily inserted into the corresponding recess 12.

[0039] When the protrusion 22 is placed in the recess 12, the end surface 21 of the panel body 20 contacts the support surface 11 of the support body 10, and the lower end surface 22b of the protrusion 22 abuts against the bottom surface 12c of the recess 12. At this time, a gap S is generated in the length direction of the opening 12a (a direction parallel to both the support surface 11 and the surface 23) between the first locking surface 12b1 of the recess 12 and the corresponding first locked surface 22a1 of the protrusion 22, and between the second locking surface 12b2 of the recess 12 and the corresponding second locked surface 22a2 of the protrusion 22.

[0040] Once the protrusion 22 is positioned inside the recess 12, grout 30 is then filled into the gap S between the recess 12 and the protrusion 22, as shown in Fig. 11. In this embodiment, the grout 30 is filled so as to contact the first engaging surface 12b1 and the first engaged surface 22a1 and to contact the second engaging surface 12b2 and the second engaged surface 22a2. As described above, the grout 30 may be filled in a fluid pre-hardened state into the gap S between the recess 12 and the protrusion 22 from the portion of the opening 12a that is adjacent to the panel body 20 and opens to the outside.

[0041] After filling the gap S with the grout material 30, the portion of the opening 12a that is adjacent to the panel body 20 and opens to the outside is closed with a cover plate 13, as shown in Figure 12. At this time, the amount of grout material 30 filled can be adjusted so that the surface of the cover plate 13 is positioned on the same plane as the support surface 11 of the support body 10.

[0042] When the grout material 30 filled in the gap S hardens, each of the seven protrusions 22 is fixed inside the corresponding recess 12 by the grout material 30, thereby joining the panel body 20 to the support surface 11 of the support body 10 and completing the joining operation.

[0043] As described above, in the panel joint structure 1 and panel connection method according to this embodiment, the protrusion 22 of the panel body 20 is placed in the recess 12 of the support body 10, and then the gap S between the recess 12 and the protrusion 22 is filled with grout 30 and cured to fix the protrusion 22 to the recess 12. Therefore, after the protrusion 22 of the panel body 20 is placed in the recess 12 of the support body 10, but before the grout 30 is filled in the gap S, the panel body 20 can be moved within the range of the gap S in the length direction of the opening 12a of the recess 12 relative to the support body 10 (a direction parallel to both the support surface 11 of the support body 10 and the surface 23 of the panel body 20). This allows for fine adjustment of the position of the panel body 20 relative to the support body 10, facilitating erection adjustment of the panel body 20. Furthermore, because the gap S between the recess 12 and the protrusion 22 is filled with grout 30 after joining is completed, the recess 12 and the protrusion 22 can be easily formed without requiring high precision. Furthermore, because the gap S is filled with the fluid unhardened grout material 30, the work can be performed more easily than when filling the gap S with a solid material. Therefore, the panel joint structure 1 and panel connection method according to this embodiment can improve the workability when joining the panel body 20 to the support surface 11 of the support body 10.

[0044] Furthermore, in the panel joint structure 1 and panel connection method according to this embodiment, as described above, the gap S between the recess 12 and the protrusion 22 is filled with the grout material 30 after the joining is completed, so the support body 10 and the panel body 20 can be fitted together without any gaps by the recess 12, the protrusion 22, and the grout material 30. This allows for a higher fixing strength than with pin joints. It also improves the sound insulation of the joint between the support body 10 and the panel body 20.

[0045] Furthermore, in the panel joint structure 1 and panel connection method of this embodiment, as described above, the protrusion 22 of the panel body 20 is placed in the recess 12 of the support body 10, and then the gap S between the recess 12 and the protrusion 22 is filled with grout material 30 and hardened, thereby fixing the protrusion 22 to the recess 12.Therefore, by breaking the grout material 30 and removing it from the gap S, the panel joint structure 1 between the support body 10 and the panel body 20 can be easily dismantled.

[0046] The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the spirit and scope of the present invention.

[0047] For example, in the above embodiment, when viewed from a direction parallel to both the support surface 11 of the support body 10 and the surface 23 of the panel body 20, the panel body 20 is joined to the support body 10 in a T-shape. However, this is not limited to this. For example, as shown as a modified example in Figures 13, 14 and 15, a notched recess 12 may be provided on the end face 14 of the support body 10, and a protrusion 22 provided on the end face 21 of the panel body 20 may be positioned in the recess 12, thereby joining the panel body 20 to the support body 10 in an L-shape so that the end face 14 of the support body 10 and the surface 23 of the panel body 20 are arranged on the same plane.

[0048] 14, in this modification, the gap between the recess 12 and the protrusion 22 is filled with grout material 30, and the grout material 30 contacts the first engaging surface 12b1 and the first engaged surface 22a1, and also contacts the second engaging surface 12b2 and the second engaged surface 22a2, thereby restricting movement of the end surface 21 of the protrusion 22 relative to the recess 12 in a direction away from the support surface 11. When filling the grout material 30, a formwork may be erected around the recess 12. 15, the first engaging surface 12b1 and the second engaging surface 12b2 are inclined so that the distance between them increases with increasing distance from the end surface 14 of the support body 10, and the first engaged surface 22a1 and the second engaged surface 22a2 are similarly inclined so that the distance between them increases with increasing distance from the end surface 14 of the support body 10. As a result, the grout material 30 contacts the first engaging surface 12b1 and the first engaged surface 22a1, and also contacts the second engaging surface 12b2 and the second engaged surface 22a2, thereby restricting movement of the protrusion 22 relative to the recess 12 in a direction perpendicular to the end surface 14. Therefore, the panel body 20 is joined at the end surface 21 to the support surface 11 of the support body 10, with the protrusion 22 arranged inside the corresponding recess 12 being fixed inside the corresponding recess 12 by the grout material 30.

[0049] This modified panel joint structure 1 can also achieve the same effects as the panel joint structure 1 shown in Figures 1 and 2. Furthermore, the modified panel joint structure 1 can also be constructed with good workability using the same panel joining method as above.

[0050] As shown in Figures 16 and 17 as another modified example, the end surface 14 of the support body 10 may be used as the support surface 11, a notched recess 12 may be provided on this end surface 14, and a protrusion 22 provided on the end surface 21 of the panel body 20 may be positioned in the recess 12, thereby joining the panel body 20 to the support body 10 in an I-shape so that the support body 10 and the panel body 20 form a single plate material.

[0051] In this other modified example, the gap between the recess 12 and the protrusion 22 is filled with grout material 30, thereby restricting movement of the protrusion 22 relative to the recess 12, and the panel body 20 is joined to the end surface 14 (support surface 11) of the support body 10 at the end surface 21. In this case as well, when filling the grout material 30, a formwork may be erected around the recess 12.

[0052] 17, a plurality of recesses 12 are provided on the end face 14 of the support body 10, and a plurality of protrusions 22 are provided on the end face 21 of the panel body 20, and adjacent recesses 12 or protrusions 22 are configured so that the first engaging surface 12b1, the second engaging surface 12b2 or the first engaged surface 22a1, and the second engaged surface 22a2 are inclined in opposite directions relative to the surface 15 of the support body 10 (the surface perpendicular to the end face 14 or the support surface 11). This makes it possible to prevent the panel body 20 from shifting relative to the support body 10 in the direction perpendicular to the surface 15 of the support body 10 after the grout material 30 has hardened and the panel body 20 has been joined to the support body 10. [Explanation of symbols]

[0053] 1 Panel joint structure 10 Support 11 Support surface 12 recess 12a opening 12b1 First locking surface 12b2 Second locking surface 12c bottom 12d side 13 Lid plate 14 End face 15 Surface 20 Panel Body 21 End face 22 Protrusion 22a1 First engagement surface 22a2 Second engagement surface 22b Lower end surface 22c side 23 Surface 30 Grout material 40 Processing equipment 41 Rotation axis 42 blades 50 Core 51 Rectangular block-shaped part 51a Guide groove 52 Triangular part 52a Guide rail α angle β angle S Gap

Claims

1. A panel joining structure for joining a panel body to a support body, a recess provided in the support body, the recess having an opening that opens into a support surface provided on a surface of the support body, and a locking surface provided between the opening and a bottom surface and facing the bottom surface; a protrusion provided on the end surface of the panel body, the protrusion being sized to fit inside the opening and having an engaging surface facing the end surface; and a grout material filled in the gap between the recess and the protrusion.

2. The recessed portion is The opening has a rectangular shape; The bottom surface has a rectangular shape that is larger than the opening; a first locking surface extending obliquely from one side of the opening toward one side of the bottom surface; a second engaging surface extending from the other side opposite to the one side of the opening toward the other side opposite to the one side of the bottom surface, inclined in the opposite direction to the first engaging surface, The protrusion is a rectangular lower end surface smaller than the opening; a first engaged surface extending from the end surface toward one side of the lower end surface in parallel with the first engaging surface; The panel joining structure according to claim 1 , further comprising: a second engaged surface extending parallel to the second engaging surface from the end surface toward the other side opposite the one side of the lower end surface.

3. The width of the opening is formed to be wider than the width of the end surface, The panel joint structure according to claim 2 , wherein a portion of the opening is closed by a cover plate.

4. A panel joining method for joining a panel body to a support body, comprising: providing a recess in the support body, the recess having an opening that opens into a support surface provided on a surface of the support body, and an engaging surface that is provided between the opening and a bottom surface and faces the bottom surface; providing a protrusion on the end surface of the panel body, the protrusion being sized to fit inside the opening and having an engaging surface facing the end surface; inserting the protrusion into the recess to position it inside the recess; and filling a gap between the recess and the protrusion with grout.

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