Joining method of form panel

Abstract

To provide a joining method of form panels excellent in workability and capable of securely performing engagement and performing the engagement even in a case of a slight dimensional error.SOLUTION: A joining method of form panels 10 of the present invention comprises: forming a first engaging part 11a of a panel side on a first form panel outer surface 11s of a first form panel 11; forming a second engaging part 12a of a panel side on a second form panel outer surface 12s of a second form panel 12 connected adjacent to the first form panel 11, wherein a joining member 20 comprises a first engaging part 21a on a member side to be engaged with the first engaging part 11a of the panel side and a second engaging part 22a on the member side to be engaged with the second engaging part 12a of a panel side; engaging the first engaging part 21a on a member side with the first engaging part 11a of a panel side; engaging the second engaging part 22a on the member side with the second engaging part 12a of a panel side; and engaging the first form panel 11 and the second form panel 12, to assemble form panels 10 in a wall shape.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a method for joining panels used in construction when placing concrete.

Background Art

[0002] Generally, crosspieces are used for joining formwork panels (Patent Documents 1 to 3). Crosspieces may be used to increase the rigidity of formwork panels, but when ensuring the rigidity of formwork panels by clamping them with pipe materials, crosspieces only function as temporary fixation of formwork panels. Not only is the burden of nailing work for attaching crosspieces large, but formwork panels with attached crosspieces are bulky, which hinders transportation and storage. Also, the burden of removing nails is large, and most of the crosspieces after construction become waste materials. Note that Patent Documents 4 and 5 propose joining members for connecting formwork panels.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, among the joining members proposed in Patent Documents 4 and 5, while reliable joining can be performed, the work burden of joining is large.

[0005] Therefore, an object of the present invention is to provide a formwork panel joining method that is excellent in workability, can perform reliable engagement, and can perform engagement even if there are some dimensional errors.

Means for Solving the Problems

[0006] The formwork panel joining method of the present invention according to claim 1 is a formwork panel joining method in which a formwork panel used in construction when placing concrete is joined using a joining member instead of a cross member. On the outer surface of the first formwork panel of the first formwork panel, a first locking portion on the panel side is formed. On the outer surface of the second formwork panel of the second formwork panel joined adjacent to the first formwork panel, a second locking portion on the panel side is formed. The joining member has a first locking portion on the member side that engages with the first locking portion on the panel side and a second locking portion on the member side that engages with the second locking portion on the panel side. The first locking portion on the member side is engaged with the first locking portion on the panel side, and the second locking portion on the member side is engaged with the second locking portion on the panel side to join the first formwork panel and the second formwork panel, thereby assembling the formwork panel into a wall shape. The present invention according to claim 2 is the formwork panel joining method according to claim 1, wherein the first locking portion on the panel side and the second locking portion on the panel side are formed as convex ridge portions on the panel side, the first locking portion on the member side and the second locking portion on the member side are formed as groove-shaped concave portions on the member side, one panel-side ridge wall surface of the panel-side convex ridge portion is a vertical surface with respect to the outer surfaces of the first formwork panel and the second formwork panel, the other panel-side ridge wall surface of the panel-side convex ridge portion is an inclined surface with respect to the one panel-side ridge wall surface, one member-side groove wall surface of the member-side groove-shaped concave portion is brought into contact with the one panel-side ridge wall surface, and the other member-side groove wall surface of the member-side groove-shaped concave portion is brought into contact with the other panel-side ridge wall surface. The invention according to claim 2 is the method for joining formwork panels according to claim 1, wherein the first panel-side locking portion is continuously formed from one end-side surface to the other end-side surface of the first formwork panel, the second panel-side locking portion is continuously formed from one end-side surface to the other end-side surface of the second formwork panel, the first member-side locking portion is inserted from the one end-side surface or the other end-side surface of the first formwork panel to be engaged with the first panel-side locking portion, and the second member-side locking portion is inserted from the one end-side surface or the other end-side surface of the second formwork panel to be engaged with the second panel-side locking portion. The invention according to claim 3 is the method for joining formwork panels according to claim 2, wherein the joining member has one-side joining member forming the first member-side locking portion and the other-side joining member forming the second member-side locking portion, the one-side joining member has a one-side joining member locking portion engaged with the other-side joining member, the other-side joining member has an other-side joining member locking portion engaged with the one-side joining member, the one-side joining member and the other-side joining member are connected by engaging the one-side joining member locking portion and the other-side joining member locking portion, the first member-side locking portion is engaged with the first panel-side locking portion, the second member-side locking portion is engaged with the second panel-side locking portion, and the first formwork panel and the second formwork panel are joined in a state where the one-side joining member and the other-side joining member are connected. The invention according to claim 5 is the method for joining formwork panels according to claim 1, wherein the first panel-side locking portion and the second panel-side locking portion are formed as panel-side groove-shaped recesses, the first member-side locking portion and the second member-side locking portion are formed as member-side ridge-shaped protrusions, one panel-side groove wall surface of the panel-side groove-shaped recess is a vertical surface with respect to the outer surfaces of the first formwork panel and the second formwork panel, the other panel-side groove wall surface of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface, one member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the one panel-side groove wall surface, and the other member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the other panel-side groove wall surface. The present invention according to claim 6 is the method for joining formwork panels according to claim 1, wherein the first locking portion on the panel side is formed by a ridge-shaped convex portion on the panel side, the second locking portion on the panel side is formed by a groove-shaped concave portion on the panel side, the first locking portion on the member side is formed by a groove-shaped concave portion on the member side, the second locking portion on the member side is formed by a ridge-shaped convex portion on the member side, one panel side ridge wall surface of the panel side ridge-shaped convex portion is a vertical surface with respect to the outer surface of the first formwork panel, the other panel side ridge wall surface of the panel side ridge-shaped convex portion is an inclined surface with respect to the one panel side ridge wall surface, one panel side groove wall surface of the panel side groove-shaped concave portion is a vertical surface with respect to the outer surface of the second formwork panel, the other panel side groove wall surface of the panel side groove-shaped concave portion is an inclined surface with respect to the one panel side groove wall surface, one member side groove wall surface of the member side groove-shaped concave portion is brought into contact with the one panel side ridge wall surface, the other member side groove wall surface of the member side groove-shaped concave portion is brought into contact with the other panel side ridge wall surface, one member side ridge wall surface of the member side ridge-shaped convex portion is brought into contact with the one panel side groove wall surface, and the other member side ridge wall surface of the member side ridge-shaped convex portion is brought into contact with the other panel side groove wall surface. The present invention according to claim 7 is the method for joining formwork panels according to claim 1, wherein the first locking portion on the member side and the second locking portion on the member side are formed on the same surface, and the first formwork panel and the second formwork panel are joined by the joining member such that the outer surface of the first formwork panel and the outer surface of the second formwork panel are in the same plane. The present invention according to claim 8 is the method for joining formwork panels according to claim 7, wherein a pipe recess for positioning a pipe material mounted on the outer surface of the formwork panel is formed on a member side pipe contact surface adjacent to the member side panel contact surface where the first locking portion on the member side and the second locking portion on the member side are formed, and after joining the first formwork panel and the second formwork panel by the joining member, the pipe material is disposed in the pipe recess. The present invention according to claim 9 is the method for joining formwork panels according to claim 1, wherein the first formwork panel and the second formwork panel are joined by disposing the joining member at an inner angle or an outer angle of the joint between the first formwork panel and the second formwork panel. The present invention according to claim 10 is the method for joining formwork panels according to claim 9, wherein a first pipe recess for positioning a pipe member mounted on the outer panel surface of the formwork panel is formed on a first member-side pipe contact surface adjacent to a first panel contact surface where the member-side first locking portion is formed, a second pipe recess for positioning the pipe member is formed on a second member-side pipe contact surface adjacent to a second panel contact surface where the member-side second locking portion is formed, and after joining the first formwork panel and the second formwork panel by the joining member, the pipe member is arranged in the first pipe recess or the second pipe recess. The present invention according to claim 11 is the method for joining formwork panels according to claim 8, which has a pipe fixing member attached to the joining member, the pipe fixing member has a pipe contact surface that contacts the pipe member and an engaging portion that engages with the joining member, and after arranging the pipe member in the pipe recess, the pipe fixing member is attached to the joining member by the engaging portion, thereby holding the pipe member with the pipe contact surface. The present invention according to claim 12 is the method for joining formwork panels according to claim 1, wherein the joining member is formed with nail driving holes, and the joining member is nailed to the cross member using the nail driving holes. The present invention according to claim 13 is the method for joining formwork panels according to claim 1, which has a dedicated pipe fixing member for positioning a pipe member mounted on the outer panel surface of the formwork panel, a panel-side locking portion is formed on the outer surface of the formwork panel of the formwork panel, the dedicated pipe fixing member has a dedicated pipe fixing member-side locking portion that engages with the panel-side locking portion, and by engaging the dedicated pipe fixing member-side locking portion with the panel-side locking portion, the dedicated pipe fixing member holds the pipe member.

Advantages of the Invention

[0007] According to the method for joining formwork panels of the present invention, by using joining members instead of crosspieces, and engaging the member-side first locking portion and the member-side second locking portion provided on the joining members with the panel-side first locking portion and the panel-side second locking portion to join the first formwork panel and the second formwork panel, the formwork panels can be assembled into a wall shape, which is excellent in workability and can reduce waste materials.

Brief Description of the Drawings

[0008]

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Mode for Carrying Out the Invention

[0009] The method for joining formwork panels according to the first embodiment of the present invention is such that on the outer surface of the first formwork panel of the first formwork panel, a first locking portion on the panel side is formed, and on the outer surface of the second formwork panel of the second formwork panel joined adjacent to the first formwork panel, a second locking portion on the panel side is formed. The joining member has a first locking portion on the member side that engages with the first locking portion on the panel side and a second locking portion on the member side that engages with the second locking portion on the panel side. The first locking portion on the member side is engaged with the first locking portion on the panel side, and the second locking portion on the member side is engaged with the second locking portion on the panel side to join the first formwork panel and the second formwork panel, thereby assembling the formwork panels into a wall shape. According to the present embodiment, instead of using a cross member, a joining member is used, and the first locking portion on the member side and the second locking portion on the member side provided on the joining member are engaged with the first locking portion on the panel side and the second locking portion on the panel side, respectively, to join the first formwork panel and the second formwork panel, so that the formwork panels can be assembled into a wall shape. This provides excellent workability and reduces waste materials.

[0010] The second embodiment of the present invention is the method for joining formwork panels according to the first embodiment, wherein the first locking portion on the panel side is continuously formed from one end side surface to the other end side surface of the first formwork panel, the second locking portion on the panel side is continuously formed from one end side surface to the other end side surface of the second formwork panel, the first locking portion on the member side is inserted from one end side surface or the other end side surface of the first formwork panel to engage with the first locking portion on the panel side, and the second locking portion on the member side is inserted from one end side surface or the other end side surface of the second formwork panel to engage with the second locking portion on the panel side. According to the present embodiment, since the first locking portion on the panel side is continuously formed from one end side surface to the other end side surface of the first formwork panel and the second locking portion on the panel side is continuously formed from one end side surface to the other end side surface of the second formwork panel, even if the first formwork panel and the second formwork panel are displaced for some reason, the joining member can be attached.

[0011] The third embodiment of the present invention is a method for joining formwork panels according to the second embodiment, in which the joining member has one-sided joining member forming a member-side first locking portion and the other-sided joining member forming a member-side second locking portion. The one-sided joining member has a one-sided joining member locking portion that engages with the other-sided joining member, and the other-sided joining member has a other-sided joining member locking portion that engages with the one-sided joining member. By engaging the one-sided joining member locking portion with the other-sided joining member locking portion, the one-sided joining member and the other-sided joining member are connected, the member-side first locking portion is engaged with the panel-side first locking portion, and the member-side second locking portion is engaged with the panel-side second locking portion. In a state where the one-sided joining member and the other-sided joining member are connected, the first formwork panel and the second formwork panel are joined. According to this embodiment, by dividing the joining member into one-sided joining member forming a member-side first locking portion and the other-sided joining member forming a member-side second locking portion, the engagement of the member-side first locking portion with the panel-side first locking portion and the engagement of the member-side second locking portion with the panel-side second locking portion can be easily performed.

[0012] The fourth embodiment of the present invention is a method for joining formwork panels according to the first embodiment, in which the panel-side first locking portion and the panel-side second locking portion are formed by panel-side ridge-shaped convex portions, the member-side first locking portion and the member-side second locking portion are formed by member-side groove-shaped concave portions, one panel-side ridge wall surface of the panel-side ridge-shaped convex portion is a vertical surface with respect to the outer surfaces of the first formwork panel and the second formwork panel, the other panel-side ridge wall surface of the panel-side ridge-shaped convex portion is an inclined surface with respect to the one panel-side ridge wall surface, one member-side groove wall surface of the member-side groove-shaped concave portion is brought into contact with the one panel-side ridge wall surface, and the other member-side groove wall surface of the member-side groove-shaped concave portion is brought into contact with the other panel-side ridge wall surface. According to this embodiment, since one panel-side ridge wall surface is a vertical surface with respect to the outer surface of the formwork panel and the other panel-side ridge wall surface is an inclined surface with respect to the one panel-side ridge wall surface, reliable engagement can be performed and engagement can be performed even if a slight dimensional error occurs.

[0013] The fifth embodiment of the present invention is a method for joining formwork panels according to the first embodiment, wherein the panel-side first locking portion and the panel-side second locking portion are formed by a panel-side groove-shaped recess, the member-side first locking portion and the member-side second locking portion are formed by a member-side ridge-shaped protrusion, one panel-side groove wall surface of the panel-side groove-shaped recess is a vertical surface with respect to the outer surfaces of the first formwork panel and the second formwork panel, the other panel-side groove wall surface of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface, one member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the one panel-side groove wall surface, and the other member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the other panel-side groove wall surface. According to this embodiment, since one panel-side groove wall surface is a vertical surface with respect to the outer surface of the formwork panel and the other panel-side groove wall surface is an inclined surface with respect to the one panel-side groove wall surface, reliable engagement can be achieved and engagement can be performed even if a slight dimensional error occurs.

[0014] The sixth embodiment of the present invention is a method for joining formwork panels according to the first embodiment, wherein the panel-side first locking portion is formed by a panel-side ridge-shaped protrusion, the panel-side second locking portion is formed by a panel-side groove-shaped recess, the member-side first locking portion is formed by a member-side groove-shaped recess, the member-side second locking portion is formed by a member-side ridge-shaped protrusion, one panel-side ridge wall surface of the panel-side ridge-shaped protrusion is a vertical surface with respect to the outer surface of the first formwork panel, the other panel-side ridge wall surface of the panel-side ridge-shaped protrusion is an inclined surface with respect to the one panel-side ridge wall surface, one panel-side groove wall surface of the panel-side groove-shaped recess is a vertical surface with respect to the outer surface of the second formwork panel, the other panel-side groove wall surface of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface, one member-side groove wall surface of the member-side groove-shaped recess is brought into contact with the one panel-side ridge wall surface, the other member-side groove wall surface of the member-side groove-shaped recess is brought into contact with the other panel-side ridge wall surface, one member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the one panel-side groove wall surface, and the other member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the other panel-side groove wall surface. According to this embodiment, one panel side ridge wall surface is a vertical surface with respect to the outer surface of the formwork panel, the other panel side ridge wall surface is an inclined surface with respect to the one panel side ridge wall surface, one panel side groove wall surface is a vertical surface with respect to the outer surface of the formwork panel, and the other panel side groove wall surface is an inclined surface with respect to the one panel side groove wall surface. Therefore, reliable engagement can be achieved, and even if there are some dimensional errors, engagement can still be performed.

[0015] The seventh embodiment of the present invention is a method for joining formwork panels according to the first embodiment, in which the member side first locking portion and the member side second locking portion are formed on the same plane, and the first formwork panel and the second formwork panel are joined by a joining member so that the outer surface of the first formwork panel and the outer surface of the second formwork panel are on the same plane. According to this embodiment, the joining of the first formwork panel and the second formwork panel arranged side by side on the same plane can be easily performed.

[0016] The eighth embodiment of the present invention is a method for joining formwork panels according to the seventh embodiment, in which a pipe recess for positioning a pipe material attached to the outer surface of the formwork panel is formed on the member side pipe contact surface adjacent to the member side panel contact surface where the member side first locking portion and the member side second locking portion are formed, and after joining the first formwork panel and the second formwork panel by a joining member, the pipe material is arranged in the pipe recess. According to this embodiment, the joining member can also be used for installing a pipe material that supports the load applied to the formwork panel during concrete placement.

[0017] The ninth embodiment of the present invention is a method for joining formwork panels according to any of the first embodiments, in which the first formwork panel and the second formwork panel are joined by arranging a joining member at the inner or outer corner of the joint between the first formwork panel and the second formwork panel. According to this embodiment, the joining of the inner or outer corner of the joint between the first formwork panel and the second formwork panel can be easily performed.

[0018] In the tenth embodiment of the present invention, in the formwork panel joining method according to the ninth embodiment, a first pipe recess for positioning a pipe material mounted on the outer surface of the formwork panel is formed on a first member-side pipe contact surface adjacent to a first panel contact surface where a member-side first locking portion is formed, and a second pipe recess for positioning the pipe material is formed on a second member-side pipe contact surface adjacent to a second panel contact surface where a member-side second locking portion is formed. After joining the first formwork panel and the second formwork panel with a joining member, the pipe material is arranged in the first pipe recess or the second pipe recess. According to this embodiment, the joining member can also be used for installing a pipe material that supports the load applied to the formwork panel during concrete placement.

[0019] In the eleventh embodiment of the present invention, in the formwork panel joining method according to the eighth embodiment, it has a pipe fixing member attached to the joining member. The pipe fixing member has a pipe contact surface that contacts the pipe material and an engaging portion that engages with the joining member. After arranging the pipe material in the pipe recess, the pipe fixing member is attached to the joining member by the engaging portion, and the pipe material is held by the pipe contact surface. According to this embodiment, the pipe material can be held by attaching the pipe fixing member to the joining member.

[0020] In the twelfth embodiment of the present invention, in the formwork panel joining method according to the first embodiment, nail-driving holes are formed in the joining member, and the joining member is nailed to the cross-laying wood using the nail-driving holes. According to this embodiment, the joining member can also be attached to the cross-laying wood and used.

[0021] The 13th embodiment of the present invention has a pipe fixing dedicated member for positioning a pipe material mounted on the outer panel surface of the formwork panel in the joining method of the formwork panel according to the 1st embodiment. On the outer surface of the formwork panel of the formwork panel, a panel side locking portion is formed, and the pipe fixing dedicated member has a pipe fixing dedicated member side locking portion that engages with the panel side locking portion. By engaging the pipe fixing dedicated member side locking portion with the panel side locking portion, the pipe material is held by the pipe fixing dedicated member. According to the present embodiment, by using the pipe fixing dedicated member, it is possible to easily install the pipe material that supports the load applied to the formwork panel during concrete placement.

Example

[0022] Hereinafter, an example of the joining method of the formwork panel according to the present invention will be described.

[0023] FIG. 1 is a side view of a main part of a structure in a construction state showing the joining method of the formwork panel according to the embodiment of the present invention. The joining method of the formwork panel according to the present embodiment joins the formwork panel 10 used in the construction when placing concrete by using the joining member 20 instead of the crosspiece. As shown in FIG. 1, in the formwork construction of a concrete structure, a pair of wall bodies 10a and 10b are erected on the foundation 1, and concrete is placed in the space 2 between the inner surface of the wall body 10a and the inner surface of the wall body 10b. In the beam part, the wall body 10c is supported by the beam lower receiving member 3, and the beam lower receiving member 3 is held by the pipe support 4. On the pair of wall bodies 10a and 10b, a tightening fitting 5 is attached to keep the interval between the pair of wall bodies 10a and 10b constant. The tightening fitting 5 is composed of a separator 5a, a pair of cones 5b, a pair of tightening fitting bodies 5c, and a pair of washers 5d. The wall bodies 10a, 10b, and 10c are formed by joining a plurality of formwork panels 10. Generally, battens are used for joining the formwork panels 10. Although battens may be used to enhance the rigidity of the formwork panels 10, in this embodiment, vertical pipe members 6a are arranged at predetermined intervals on the outer surfaces of the formwork panels of the wall bodies 10a and 10b, and the rigidity of the formwork panels 10 is ensured by clamping these vertical pipe members 6a (6) with horizontal pipe members 6b (6). The pipe members 6 support the load applied to the formwork panels 10 during concrete placement. In FIG. 1, as the joining member 20, a joining member 20 for joining two formwork panels 10 so as to be in the same plane and a joining member 20 for joining the inner corner of the mating of two formwork panels 10 are shown.

[0024] FIG. 2 is a configuration diagram showing an embodiment of a formwork panel and a joining member used in the method for joining formwork panels according to the present invention. FIG. 2(a) shows a first formwork panel 11, a second formwork panel 12, and a joining member 20. As shown in FIG. 2(a), on the outer surface 11s of the first formwork panel of the first formwork panel 11, a first locking portion 11a on the panel side is formed, and on the outer surface 12s of the second formwork panel 12 joined adjacent to the first formwork panel 11, a second locking portion 12a on the panel side is formed. The joining member 20 is attached by engaging with the first locking portion 11a on the panel side formed at the lower part of the first formwork panel 11 and the second locking portion 12a on the panel side formed at the upper part of the second formwork panel 12. FIG. 2(b) is a plan view of the second formwork panel 12 shown in FIG. 2(a). As shown in FIG. 2(b), the first locking portion 11a on the panel side and the second locking portion 12a on the panel side are formed as convex ridge portions on the panel side.

[0025] FIG. 2(c) is a side view of the joining member 20. The joining member 20 has a first locking portion 21a on the member side that engages with the first locking portion 11a on the panel side and a second locking portion 22a on the member side that engages with the second locking portion 12a on the panel side. The member-side first locking portion 21a and the member-side second locking portion 22a are formed in a member-side groove-shaped recess.

[0026] FIG. 2(d) is a side view showing a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12. As shown in FIG. 2(d), the member-side first locking portion 21a is engaged with the panel-side first locking portion 11a, and the member-side second locking portion 22a is engaged with the panel-side second locking portion 12a, and the first formwork panel 11 and the second formwork panel 12 are joined to assemble the formwork panels into a wall shape. In this way, instead of using a cross member, the joining member 20 is used, and the member-side first locking portion 21a and the member-side second locking portion 22a provided on the joining member 20 are engaged with the panel-side first locking portion 11a and the panel-side second locking portion 12a to join the first formwork panel 11 and the second formwork panel 12, so that the formwork panels can be assembled into a wall shape, which is excellent in workability and can reduce waste materials.

[0027] In this embodiment, as shown in FIG. 2(d), one panel-side ridge wall surface 11ax of the panel-side ridge-shaped convex portion forming the panel-side first locking portion 11a is a vertical surface with respect to the outer surface 11s of the first formwork panel, and the other panel-side ridge wall surface 11ay of the panel-side ridge-shaped convex portion is an inclined surface with respect to the one panel-side ridge wall surface 11ax. One panel-side ridge wall surface 12ax of the panel-side ridge-shaped convex portion forming the panel-side second locking portion 12a is a vertical surface with respect to the outer surface 12s of the second formwork panel, and the other panel-side ridge wall surface 12ay of the panel-side ridge-shaped convex portion is an inclined surface with respect to the one panel-side ridge wall surface 12ax. The member-side groove-shaped recess forming the member-side first locking portion 21a is formed with a vertical surface such that one member-side groove wall surface 21ax abuts against the one panel-side ridge wall surface 11ax, and an inclined surface such that the other member-side groove wall surface 21ay abuts against the other panel-side ridge wall surface 11ay. Also, the member-side groove-shaped recess forming the member-side second locking portion 22a is formed with a vertical surface such that one member-side groove wall surface 22ax abuts against the one panel-side ridge wall surface 12ax, and an inclined surface such that the other member-side groove wall surface 22ay abuts against the other panel-side ridge wall surface 12ay. Therefore, in the state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, for the member-side first locking portion 21a, one member-side groove wall surface 21ax abuts against one panel-side ridge wall surface 11ax, and the other member-side groove wall surface 21ay abuts against the other panel-side ridge wall surface 11ay. For the member-side second locking portion 22a, one member-side groove wall surface 22ax abuts against one panel-side ridge wall surface 12ax, and the other member-side groove wall surface 22ay abuts against the other panel-side ridge wall surface 12ay. In this way, since one panel-side ridge wall surfaces 11ax, 12ax are perpendicular surfaces with respect to the outer surfaces 11s, 12s of the formwork panels, and the other panel-side ridge wall surfaces 11ay, 12ay are inclined surfaces with respect to one panel-side ridge wall surfaces 11ax, 12ax, reliable engagement can be achieved and engagement can still be performed even if there are some dimensional errors.

[0028] In the joining member 20 according to this embodiment, the member-side first locking portion 21a and the member-side second locking portion 22a are formed on the same plane. Therefore, by using the joining member 20, the first formwork panel 11 and the second formwork panel 12 are joined such that the outer surface 11s of the first formwork panel and the outer surface 12s of the second formwork panel are on the same plane. In this way, by using the joining member 20, the joining of the first formwork panel 11 and the second formwork panel 12 arranged side by side on the same plane can be easily performed.

[0029] Further, in the joining member 20 according to this embodiment, a pipe recess 20c for positioning a pipe member 6 mounted on the outer surface of the formwork panel of the formwork panel 10 is formed on a member-side pipe contact surface 20b adjacent to a member-side panel contact surface 20s on which the member-side first locking portion 21a and the member-side second locking portion 22a are formed. Therefore, after joining the first formwork panel 11 and the second formwork panel 12 by the joining member 20, the pipe member 6 can be arranged in the pipe recess 20c, and the joining member 20 can also be used for the installation of the pipe member 6 that supports the load applied to the formwork panel 10 during concrete pouring. Note that, although the first formwork panel 11 and the second formwork panel 12 are described with different reference numerals, they are panels with the same structure as is apparent from the above description. The same applies to the following description.

[0030] FIG. 3 is a configuration diagram showing another embodiment of a formwork panel and a joining member used in a method for joining formwork panels according to the present invention. In the following description, the same reference numerals are given to the same constituent members and the description thereof is omitted.

[0031] FIG. 3(a) shows that the panel-side first locking portion 11b formed on the first formwork panel 11 is formed as a panel-side groove-shaped recess, and the member-side first locking portion 21b is formed as a member-side ridge-shaped protrusion. In the present embodiment shown in FIG. 3(a), one panel-side groove wall surface 11bx of the panel-side groove-shaped recess forming the panel-side first locking portion 11b is a vertical surface with respect to the outer surface 11s of the first formwork panel, and the other panel-side groove wall surface 11by of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface 11bx. Also in the present embodiment, the member-side ridge-shaped protrusion forming the member-side first locking portion 21b is formed with a vertical surface such that one member-side ridge wall surface 21bx abuts against the one panel-side groove wall surface 11bx, and an inclined surface such that the other member-side ridge wall surface 21by abuts against the other panel-side groove wall surface 11by. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, for the member-side first locking portion 21b, the one member-side ridge wall surface 21bx abuts against the one panel-side groove wall surface 11bx, and the other member-side ridge wall surface 21by abuts against the other panel-side groove wall surface 11by. For the member-side second locking portion 22a, the one member-side groove wall surface 22ax abuts against the one panel-side ridge wall surface 12ax, and the other member-side groove wall surface 22ay abuts against the other panel-side ridge wall surface 12ay.

[0032] FIG. 3(b) shows that the panel-side first locking portion 11b formed on the first formwork panel 11 is formed as a panel-side groove-shaped recess, the member-side first locking portion 21b is formed as a member-side ridge-shaped protrusion, the panel-side second locking portion 12b formed on the second formwork panel 12 is formed as a panel-side groove-shaped recess, and the member-side second locking portion 22b is formed as a member-side ridge-shaped protrusion. In the present embodiment shown in FIG. 3(b), one panel-side groove wall surface 11bx of the panel-side groove-shaped recess that forms the panel-side first locking portion 11b is a vertical surface with respect to the outer surface 11s of the first formwork panel, and the other panel-side groove wall surface 11by of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface 11bx. Also, one panel-side groove wall surface 12bx of the panel-side groove-shaped recess that forms the panel-side second locking portion 12b is a vertical surface with respect to the outer surface 12s of the second formwork panel, and the other panel-side groove wall surface 12by of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface 12bx.

[0033] Further, in the present embodiment, the member-side ridge-shaped protrusion that forms the member-side first locking portion 21b is formed with a vertical surface such that one member-side ridge wall surface 21bx abuts against the one panel-side groove wall surface 11bx, and an inclined surface such that the other member-side ridge wall surface 21by abuts against the other panel-side groove wall surface 11by. Further, in the present embodiment, the member-side ridge-shaped protrusion that forms the member-side second locking portion 22b is formed with a vertical surface such that one member-side ridge wall surface 22bx abuts against the one panel-side groove wall surface 12bx, and an inclined surface such that the other member-side ridge wall surface 22by abuts against the other panel-side groove wall surface 12by. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, for the member-side first locking portion 21b, one member-side ridge wall surface 21bx abuts against the one panel-side groove wall surface 11bx, and the other member-side ridge wall surface 21by abuts against the other panel-side groove wall surface 11by. For the member-side second locking portion 22b, one member-side ridge wall surface 22bx abuts against the one panel-side groove wall surface 12bx, and the other member-side ridge wall surface 22by abuts against the other panel-side groove wall surface 12by.

[0034] FIG. 4 is a configuration diagram showing an embodiment in which a pipe fixing member is used for the joining member shown in FIGS. 2(c) and 2(d) in the method for joining formwork panels according to the present invention. FIG. 4(a) is a top view of a main part of a structure in a construction state, FIG. 4(b) is an enlarged view of the main part of FIG. 4(a), FIG. 4(c) is a side view of the joining member, FIG. 4(d) is a side view of the pipe fixing member, and FIG. 4(e) is a front view of the pipe fixing member. In FIG. 4, a pipe fixing member 30 is used for the joint member 20 shown in FIGS. 2(c) and 2(d).

[0035] FIG. 5 is a configuration diagram showing an embodiment in which a pipe fixing member is used for the joint member shown in FIG. 3(a) in the formwork panel joining method according to the present invention. FIG. 5(a) is a top view of a main part of a structure in a construction state, FIG. 5(b) is an enlarged view of the main part of FIG. 5(a), FIG. 5(c) is a side view of the joint member, FIG. 5(d) is a side view of the pipe fixing member, and FIG. 5(e) is a front view of the pipe fixing member. In FIG. 5, a pipe fixing member 30 is used for the joint member 20 shown in FIG. 3(a).

[0036] As shown in FIGS. 4 and 5, the pipe fixing member 30 has a pipe contact surface 31 that contacts the pipe material 6 and an engaging portion 32 that engages with the joint member 20. After arranging the pipe material 6 in the pipe recess 20c, the pipe fixing member 30 is attached to the joint member 20 by the engaging portion 32, and the pipe material 6 is held by the pipe contact surface 31. In this way, the pipe material 6 can be held by attaching the pipe fixing member 30 to the joint member 20. Note that the joint member 20 has a hole 20d into which the engaging portion 32 can be inserted. The pipe material 6 is held by the pipe recess 20c and the pipe contact surface 31.

[0037] FIG. 6 is a configuration diagram showing still another embodiment of the formwork panel and the joint member used in the formwork panel joining method according to the present invention. FIG. 6(a) shows the first formwork panel 11 and the second formwork panel 12. As shown in FIG. 6(a), a panel-side first locking portion 11c is formed on the outer surface 11s of the first formwork panel 11 of the first formwork panel. Similarly, a panel-side second locking portion 12c is formed on the outer surface 12s of the second formwork panel 12 of the second formwork panel. As shown in FIG. 6(b), the panel-side first locking portion 11c and the panel-side second locking portion 12c are formed as panel-side ridge-shaped protrusions. As shown in FIGS. 6(c) and 6(d), the joining member 20 according to the present embodiment is disposed at the inner corner of the junction of the first formwork panel 11 and the second formwork panel 12. The joining member 20 has a member-side first locking portion 21c that engages with the panel-side first locking portion 11c and a member-side second locking portion 22c that engages with the panel-side second locking portion 12c. The member-side first locking portion 21c and the member-side second locking portion 22c are formed as member-side groove-shaped recesses.

[0038] In the present embodiment, one panel-side ridge wall surface 11cx of the panel-side ridge-shaped protrusion forming the panel-side first locking portion 11c is a vertical surface with respect to the outer surface 11s of the first formwork panel, and the other panel-side ridge wall surface 11cy of the panel-side ridge-shaped protrusion is an inclined surface with respect to the one panel-side ridge wall surface 11cx. One panel-side ridge wall surface 12cx of the panel-side ridge-shaped protrusion forming the panel-side second locking portion 12c is a vertical surface with respect to the outer surface 12s of the second formwork panel, and the other panel-side ridge wall surface 12cy of the panel-side ridge-shaped protrusion is an inclined surface with respect to the one panel-side ridge wall surface 12cx. The member-side groove-shaped recess forming the member-side first locking portion 21c is formed with a vertical surface such that one member-side groove wall surface 21cx contacts the one panel-side ridge wall surface 11cx, and an inclined surface such that the other member-side groove wall surface 21cy contacts the other panel-side ridge wall surface 11cy. Further, the member-side groove-shaped recess forming the member-side second locking portion 22c is formed with a vertical surface such that one member-side groove wall surface 22cx contacts the one panel-side ridge wall surface 12cx, and an inclined surface such that the other member-side groove wall surface 22cy contacts the other panel-side ridge wall surface 12cy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, in the member-side first locking portion 21c, one member-side groove wall surface 21cx contacts the one panel-side ridge wall surface 11cx, and the other member-side groove wall surface 21cy contacts the other panel-side ridge wall surface 11cy. In the member-side second locking portion 22c, one member-side groove wall surface 22cx contacts the one panel-side ridge wall surface 12cx, and the other member-side groove wall surface 22cy contacts the other panel-side ridge wall surface 12cy. In this way, since the ridge wall surfaces 11cx and 12cx on one panel side are perpendicular to the outer surfaces 11s and 12s of the formwork panel, and the ridge wall surfaces 11cy and 12cy on the other panel side are inclined surfaces with respect to the ridge wall surfaces 11cx and 12cx on one panel side, reliable engagement can be achieved and engagement can be performed even if there are some dimensional errors.

[0039] Further, in the joining member 20 according to the present embodiment, a first pipe recess 20c1 for positioning the pipe material 6 attached to the outer surface of the formwork panel 10 is formed on a first member-side pipe contact surface 20b1 adjacent to a first panel contact surface 20s1 on which a member-side first locking portion 21c is formed, and a second pipe recess 20c2 for positioning the pipe material 6 is formed on a second member-side pipe contact surface 20b2 adjacent to a second panel contact surface 22s2 on which a member-side second locking portion 22c is formed. In this way, by disposing the joining member 20 at the inner corner of the joint between the first formwork panel 11 and the second formwork panel 12 and joining the first formwork panel 11 and the second formwork panel 12, the joint at the inner corner of the joint between the first formwork panel 11 and the second formwork panel 12 can be easily performed.

[0040] FIG. 7 is a configuration diagram showing an embodiment in which a pipe fixing member is used for the joining member shown in FIG. 6 in the method for joining formwork panels according to the present embodiment. FIG. 7(a) is a top view of a main part of a structure in a construction state, FIG. 7(b) is a side view of the joining member, FIG. 7(c) is a side view of the pipe fixing member, and FIG. 7(d) is a front view of the pipe fixing member. In FIG. 7, a pipe fixing member 30 is used for the joining member 20 shown in FIG. 6. As shown in FIG. 7, the pipe fixing member 30 has a pipe contact surface 31 that contacts the pipe material 6 and an engaging portion 32 that engages with the joining member 20. After the pipe fixing member 30 arranges the pipe material 6 in the pipe recesses 20c1 and 20c2, the pipe fixing member 30 is attached to the joining member 20 by the engaging portion 32, thereby holding the pipe material 6 with the pipe contact surface 31. In this way, the pipe material 6 can be held by attaching the pipe fixing member 30 to the joining member 20. Note that the joining member 20 has a hole 20d into which the engaging portion 32 can be inserted. The pipe material 6 is held by the pipe recess 20c and the pipe contact surface 31.

[0041] FIG. 8 is a configuration diagram showing still another example of a formwork panel and a joining member used in the method for joining formwork panels according to the present invention. FIGS. 8(a) and 8(c) show the first formwork panel 11, and FIGS. 8(b) and 8(d) show the second formwork panel 12. As shown in FIGS. 8(a) and 8(c), a panel-side first locking portion 11c is formed on the outer surface 11s of the first formwork panel 11 of the first formwork panel. As shown in FIGS. 8(b) and 8(d), a panel-side second locking portion 12d is formed on the outer surface 12s of the second formwork panel 12 of the second formwork panel. As shown in FIG. 8(c), the panel-side first locking portion 11c is formed by a panel-side ridge-shaped convex portion. As shown in FIG. 8(d), the panel-side second locking portion 12d is formed by a panel-side groove-shaped concave portion. As shown in FIGS. 8(e) and 8(f), the joining member 20 according to the present embodiment is disposed at the inner corner of the junction of the first formwork panel 11 and the second formwork panel 12. The joining member 20 has a member-side first locking portion 21c that engages with the panel-side first locking portion 11c and a member-side second locking portion 22d that engages with the panel-side second locking portion 12d. The member-side first locking portion 21c is formed by a member-side groove-shaped concave portion, and the member-side second locking portion 22d is formed by a member-side ridge-shaped convex portion.

[0042] In the present embodiment, one panel-side ridge wall surface 11cx of the panel-side ridge-shaped convex portion forming the panel-side first locking portion 11c is a vertical surface with respect to the outer surface 11s of the first formwork panel, and the other panel-side ridge wall surface 11cy of the panel-side ridge-shaped convex portion is an inclined surface with respect to the one panel-side ridge wall surface 11cx. One panel-side groove wall surface 12dx of the panel-side groove-shaped concave portion forming the panel-side second locking portion 12d is a vertical surface with respect to the outer surface 12s of the second formwork panel, and the other panel-side groove wall surface 12dy of the panel-side groove-shaped concave portion is an inclined surface with respect to the one panel-side groove wall surface 12dx. The member-side groove-shaped recess that forms the member-side first locking portion 21c is formed with a vertical surface so that one member-side groove wall surface 21cx abuts on one panel-side ridge wall surface 11cx, and is formed with an inclined surface so that the other member-side groove wall surface 21cy abuts on the other panel-side ridge wall surface 11cy. Further, the member-side ridge-shaped protrusion that forms the member-side second locking portion 22d is formed with a vertical surface so that one member-side ridge wall surface 22dx abuts on one panel-side groove wall surface 12dx, and is formed with an inclined surface so that the other member-side ridge wall surface 22dy abuts on the other panel-side groove wall surface 12dy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, in the member-side first locking portion 21c, one member-side groove wall surface 21cx abuts on one panel-side ridge wall surface 11cx, and the other member-side groove wall surface 21cy abuts on the other panel-side ridge wall surface 11cy. In the member-side second locking portion 22d, one member-side ridge wall surface 22dx abuts on one panel-side groove wall surface 12dx, and the other member-side ridge wall surface 22dy abuts on the other panel-side groove wall surface 12dy. Thus, since one panel-side ridge wall surface 11cx and one panel-side groove wall surface 12dx are vertical surfaces with respect to the outer surfaces 11s and 12s of the formwork panel, and the other panel-side ridge wall surface 11cy and the other panel-side groove wall surface 12dy are inclined surfaces with respect to one panel-side ridge wall surface 11cx and one panel-side groove wall surface 12dx, reliable engagement can be achieved and engagement can be performed even if there are some dimensional errors.

[0043] Also, in the joining member 20 according to the present embodiment, a first pipe recess 20c1 for positioning the pipe member 6 mounted on the outer surface of the formwork panel 10 is formed on the first member-side pipe abutting surface 20b1 adjacent to the first panel abutting surface 20s1 where the member-side first locking portion 21c is formed, and a second pipe recess 20c2 for positioning the pipe member 6 is formed on the second member-side pipe abutting surface 20b2 adjacent to the second panel abutting surface 22s2 where the member-side second locking portion 22c is formed. Thus, by disposing the joining member 20 at the inner corner of the joint between the first formwork panel 11 and the second formwork panel 12 and joining the first formwork panel 11 and the second formwork panel 12, the joint at the inner corner of the joint between the first formwork panel 11 and the second formwork panel 12 can be easily performed.

[0044] FIG. 9 is a configuration diagram showing an embodiment in which a pipe fixing member is used for the joining member shown in FIG. 8 in the method for joining formwork panels according to the present embodiment. FIG. 9(a) is a top view of a main part of a structure in a construction state, FIG. 9(b) is a side view of the joining member, FIG. 9(c) is a side view of the pipe fixing member, and FIG. 9(d) is a front view of the pipe fixing member. In FIG. 9, the pipe fixing member 30 is used for the joining member 20 shown in FIG. 8. As shown in FIG. 9, the pipe fixing member 30 has a pipe contact surface 31 that contacts the pipe material 6 and an engaging portion 32 that engages with the joining member 20. After the pipe fixing member 30 arranges the pipe material 6 in the pipe recesses 20c1 and 20c2, the pipe fixing member 30 is attached to the joining member 20 by the engaging portion 32, and the pipe material 6 is held by the pipe contact surface 31. Thus, the pipe material 6 can be held by attaching the pipe fixing member 30 to the joining member 20. Note that the joining member 20 has a hole 20d into which the engaging portion 32 can be inserted. The pipe material 6 is held by the pipe recess 20c and the pipe contact surface 31.

[0045] FIG. 10 is a configuration diagram showing still another embodiment of the formwork panel and the joining member used in the method for joining formwork panels according to the present invention. FIG. 10(a) shows the first formwork panel 11 and the second formwork panel 12. As shown in FIG. 10(a), a first panel-side locking portion 11d is formed on the first formwork panel outer surface 11s of the first formwork panel 11. Similarly, a second panel-side locking portion 12d is formed on the second formwork panel outer surface 12s of the second formwork panel 12. As shown in Fig. 10(b), the panel-side first locking portion 11d and the panel-side second locking portion 12d are formed as panel-side groove-shaped recesses. As shown in Figs. 10(c) and 10(d), the joining member 20 according to the present embodiment is disposed at the inner corner of the engagement between the first formwork panel 11 and the second formwork panel 12. The joining member 20 has a member-side first locking portion 21d that engages with the panel-side first locking portion 11d and a member-side second locking portion 22d that engages with the panel-side second locking portion 12d. The member-side first locking portion 21d and the member-side second locking portion 22d are formed as member-side ridge-shaped protrusions.

[0046] In the present embodiment, one panel-side groove wall surface 11dx of the panel-side groove-shaped recess forming the panel-side first locking portion 11d is a vertical surface with respect to the outer surface 11s of the first formwork panel, and the other panel-side groove wall surface 11dy of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface 11dx. One panel-side groove wall surface 12dx of the panel-side groove-shaped recess forming the panel-side second locking portion 12d is a vertical surface with respect to the outer surface 12s of the second formwork panel, and the other panel-side groove wall surface 12dy of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface 12dx. The member-side groove-shaped recess forming the member-side first locking portion 21d is formed with a vertical surface such that one member-side ridge wall surface 21dx abuts against the one panel-side groove wall surface 11dx, and an inclined surface such that the other member-side ridge wall surface 21dy abuts against the other panel-side groove wall surface 11dy. Further, the member-side ridge-shaped protrusion forming the member-side second locking portion 22d is formed with a vertical surface such that one member-side ridge wall surface 22dx abuts against the one panel-side groove wall surface 12dx, and an inclined surface such that the other member-side ridge wall surface 22dy abuts against the other panel-side groove wall surface 12dy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, the member-side first locking portion 21d has one member-side ridge wall surface 21dx abutting against one panel-side groove wall surface 11dx and the other member-side ridge wall surface 21dy abutting against the other panel-side groove wall surface 11dy, and the member-side second locking portion 22d has one member-side ridge wall surface 22dx abutting against one panel-side groove wall surface 12dx and the other member-side ridge wall surface 22dy abutting against the other panel-side groove wall surface 12dy. In this way, since the one panel-side groove wall surfaces 11dx and 12dx are perpendicular surfaces with respect to the outer surfaces 11s and 12s of the formwork panels, and the other panel-side groove wall surfaces 11dy and 12dy are inclined surfaces with respect to the one panel-side groove wall surfaces 11dx and 12dx, reliable engagement can be achieved and engagement can be performed even if there are some dimensional errors.

[0047] Further, in the joining member 20 according to the present embodiment, a first pipe recess 20c1 for positioning the pipe material 6 mounted on the outer surface of the formwork panel 10 is formed on a first member-side pipe abutting surface 20b1 adjacent to a first panel abutting surface 20s1 where the member-side first locking portion 21d is formed, and a second pipe recess 20c2 for positioning the pipe material 6 is formed on a second member-side pipe abutting surface 20b2 adjacent to a second panel abutting surface 22s2 where the member-side second locking portion 22c is formed. In this way, by arranging the joining member 20 at the inner corner of the joint between the first formwork panel 11 and the second formwork panel 12 and joining the first formwork panel 11 and the second formwork panel 12, the joint at the inner corner of the joint between the first formwork panel 11 and the second formwork panel 12 can be easily performed.

[0048] FIG. 11 is a configuration diagram showing an embodiment in which a pipe fixing member is used for the joining member shown in FIG. 10 in the method for joining formwork panels according to the present embodiment. FIG. 11(a) is a top view of a main part of a structure in a construction state, FIG. 11(b) is a side view of the joining member, FIG. 11(c) is a side view of the pipe fixing member, and FIG. 11(d) is a front view of the pipe fixing member. In FIG. 11, a pipe fixing member 30 is used for the joining member 20 shown in FIG. 10. As shown in Fig. 11, the pipe fixing member 30 has a pipe contact surface 31 that contacts the pipe material 6 and an engaging portion 32 that engages with the joining member 20. After arranging the pipe material 6 in the pipe recesses 20c1 and 20c2, the pipe fixing member 30 is attached to the joining member 20 by the engaging portion 32, and the pipe material 6 is held by the pipe contact surface 31. In this way, the pipe material 6 can be held by attaching the pipe fixing member 30 to the joining member 20. Note that the joining member 20 has a hole 20d into which the engaging portion 32 can be inserted. The pipe material 6 is held by the pipe recess 20c and the pipe contact surface 31.

[0049] Fig. 12 is a configuration diagram showing still another embodiment of the formwork panel, the joining member, and the pipe fixing member used in the formwork panel joining method according to the present invention. Fig. 12(a) is a top view of a main part of the structure in the construction state, Fig. 12(b) is a side view of the joining member, Fig. 12(c) is a front view of the joining member, Fig. 12(d) is a side view of the pipe fixing member, and Fig. 12(e) is a front view of the pipe fixing member.

[0050] In this embodiment, the first formwork panel 11 and the second formwork panel 12 shown in Figs. 6(a) and 6(b) are used. Therefore, the panel-side first locking portion 11c and the panel-side second locking portion 12c are formed by panel-side ridge-shaped protrusions. As shown in Fig. 12(a), the joining member 20 according to this embodiment is arranged at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12.

[0051] As shown in Figs. 12(b) and 12(c), the joining member 20 has a member-side first locking portion 21c that engages with the panel-side first locking portion 11c and a member-side second locking portion 22c that engages with the panel-side second locking portion 12c. The member-side first locking portion 21c and the member-side second locking portion 22c are formed by member-side groove-shaped recesses.

[0052] In this embodiment, the member-side groove-shaped recess that forms the member-side first locking portion 21c is formed with a vertical surface such that one member-side groove wall surface 21cx abuts against one panel-side ridge wall surface 11cx, and is formed with an inclined surface such that the other member-side groove wall surface 21cy abuts against the other panel-side ridge wall surface 11cy. Further, the member-side groove-shaped recess that forms the member-side second locking portion 22c is formed with a vertical surface such that one member-side groove wall surface 22cx abuts against one panel-side ridge wall surface 12cx, and is formed with an inclined surface such that the other member-side groove wall surface 22cy abuts against the other panel-side ridge wall surface 12cy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, for the member-side first locking portion 21c, one member-side groove wall surface 21cx abuts against one panel-side ridge wall surface 11cx, and the other member-side groove wall surface 21cy abuts against the other panel-side ridge wall surface 11cy. For the member-side second locking portion 22c, one member-side groove wall surface 22cx abuts against one panel-side ridge wall surface 12cx, and the other member-side groove wall surface 22cy abuts against the other panel-side ridge wall surface 12cy. Also, the joining member 20 according to this embodiment forms a first pipe recess 20c1 for positioning the pipe member 6 on a first member-side pipe abutting surface 20b1 adjacent to a first panel abutting surface 20s1 where the member-side first locking portion 21c is formed, and forms a second pipe recess 20c2 for positioning the pipe member 6 on a second member-side pipe abutting surface 20b2 adjacent to a second panel abutting surface 22s2 where the member-side second locking portion 22c is formed. In this way, by disposing the joining member 20 at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12 and joining the first formwork panel 11 and the second formwork panel 12, the joint at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12 can be easily performed.

[0053] As shown in FIGS. 12(d) and 12(e), the pipe fixing member 30 has a pipe abutting surface 31 that abuts against the pipe member 6 and an engaging portion 32 that engages with the joining member 20. After arranging the pipe material 6 in the pipe recesses 20c1 and 20c2, the pipe fixing member 30 is attached to the joining member 20 by the engaging portion 32, thereby holding the pipe material 6 on the pipe contact surface 31. In this way, the pipe material 6 can be held by attaching the pipe fixing member 30 to the joining member 20. Note that the joining member 20 has a hole 20d into which the engaging portion 32 can be inserted. The pipe material 6 is held by the pipe recess 20c and the pipe contact surface 31.

[0054] FIG. 13 is a configuration diagram showing still another embodiment of the formwork panel, the joining member, and the pipe fixing member used in the formwork panel joining method according to the present invention. FIG. 13(a) is a top view of a main part of a structure in a construction state, FIG. 13(b) is a side view of the joining member, FIG. 13(c) is a front view of the joining member, FIG. 13(d) is a side view of the pipe fixing member, and FIG. 13(e) is a front view of the pipe fixing member.

[0055] In this embodiment, the first formwork panel 11 and the second formwork panel 12 shown in FIGS. 8(a) to 8(d) are used. Therefore, the panel-side first locking portion 11c is formed by a panel-side ridge-shaped convex portion, and the panel-side second locking portion 12d is formed by a panel-side groove-shaped concave portion. As shown in FIG. 13(a), the joining member 20 according to this embodiment is arranged at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12. As shown in FIGS. 13(b) and 13(c), the joining member 20 has a member-side first locking portion 21c that engages with the panel-side first locking portion 11c and a member-side second locking portion 22d that engages with the panel-side second locking portion 12d. The member-side first locking portion 21c is formed by a member-side groove-shaped concave portion, and the member-side second locking portion 22d is formed by a member-side ridge-shaped convex portion.

[0056] In this embodiment, the member-side groove-shaped recess that forms the member-side first locking portion 21c is formed with a vertical surface such that one member-side groove wall surface 21cx abuts against one panel-side ridge wall surface 11cx, and is formed with an inclined surface such that the other member-side groove wall surface 21cy abuts against the other panel-side ridge wall surface 11cy. Further, the member-side ridge-shaped protrusion that forms the member-side second locking portion 22d is formed with a vertical surface such that one member-side ridge wall surface 22dx abuts against one panel-side groove wall surface 12dx, and is formed with an inclined surface such that the other member-side ridge wall surface 22dy abuts against the other panel-side groove wall surface 12dy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, in the member-side first locking portion 21c, one member-side groove wall surface 21cx abuts against one panel-side ridge wall surface 11cx, and the other member-side groove wall surface 21cy abuts against the other panel-side ridge wall surface 11cy. In the member-side second locking portion 22d, one member-side ridge wall surface 22dx abuts against one panel-side groove wall surface 12dx, and the other member-side ridge wall surface 22dy abuts against the other panel-side groove wall surface 12dy.

[0057] Also, the joining member 20 according to this embodiment forms a first pipe recess 20c1 for positioning the pipe material 6 on the first member-side pipe abutting surface 20b1 adjacent to the first panel abutting surface 20s1 where the member-side first locking portion 21c is formed, and forms a second pipe recess 20c2 for positioning the pipe material 6 on the second member-side pipe abutting surface 20b2 adjacent to the second panel abutting surface 22s2 where the member-side second locking portion 22c is formed. In this way, by arranging the joining member 20 at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12 and joining the first formwork panel 11 and the second formwork panel 12, the joint at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12 can be easily performed.

[0058] As shown in FIGS. 13(d) and 13(e), the pipe fixing member 30 has a pipe abutting surface 31 that abuts against the pipe material 6 and an engaging portion 32 that engages with the joining member 20. After arranging the pipe material 6 in the pipe recesses 20c1 and 20c2, the pipe fixing member 30 is attached to the joining member 20 by the engaging portion 32, thereby holding the pipe material 6 with the pipe contact surface 31. In this way, the pipe material 6 can be held by attaching the pipe fixing member 30 to the joining member 20. Note that the joining member 20 has a hole 20d into which the engaging portion 32 can be inserted. The pipe material 6 is held by the pipe recess 20c and the pipe contact surface 31.

[0059] FIG. 14 is a configuration diagram showing still another embodiment of the formwork panel, the joining member, and the pipe fixing member used in the formwork panel joining method according to the present invention. FIG. 14(a) is a top view of a main part of a structure in a construction state, FIG. 14(b) is a side view of the joining member, FIG. 14(c) is a front view of the joining member, FIG. 14(d) is a side view of the pipe fixing member, and FIG. 14(e) is a front view of the pipe fixing member. In the present embodiment, the first formwork panel 11 and the second formwork panel 12 shown in FIGS. 10(a) and 10(b) are used. Therefore, the panel-side first locking portion 11d and the panel-side second locking portion 12d are formed as panel-side groove-shaped recesses. As shown in FIG. 14(a), the joining member 20 according to the present embodiment is disposed at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12. As shown in FIGS. 14(b) and 14(c), the joining member 20 has a member-side first locking portion 21d that engages with the panel-side first locking portion 11d and a member-side second locking portion 22d that engages with the panel-side second locking portion 12d. The member-side first locking portion 21d and the member-side second locking portion 22d are formed as member-side ridge-shaped protrusions.

[0060] In the present embodiment, the member-side groove-shaped recess that forms the member-side first locking portion 21d is formed with a vertical surface so that one member-side ridge wall surface 21dx abuts against one panel-side groove wall surface 11dx, and an inclined surface so that the other member-side ridge wall surface 21dy abuts against the other panel-side groove wall surface 11dy. In addition, the member-side ridge-shaped convex portion that forms the member-side second locking portion 22d is formed with a vertical surface so that one member-side ridge wall surface 22dx contacts one panel-side groove wall surface 12dx, and an inclined surface is formed so that the other member-side ridge wall surface 22dy contacts the other panel-side groove wall surface 12dy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, in the member-side first locking portion 21d, one member-side ridge wall surface 21dx contacts one panel-side groove wall surface 11dx, and the other member-side ridge wall surface 21dy contacts the other panel-side groove wall surface 11dy. In the member-side second locking portion 22d, one member-side ridge wall surface 22dx contacts one panel-side groove wall surface 12dx, and the other member-side ridge wall surface 22dy contacts the other panel-side groove wall surface 12dy.

[0061] Further, in the joining member 20 according to the present embodiment, a first pipe recess 20c1 for positioning a pipe member 6 mounted on the outer surface of the formwork panel 10 is formed on a first member-side pipe contact surface 20b1 adjacent to a first panel contact surface 20s1 where the member-side first locking portion 21d is formed. A second pipe recess 20c2 for positioning the pipe member 6 is formed on a second member-side pipe contact surface 20b2 adjacent to a second panel contact surface 22s2 where the member-side second locking portion 22c is formed. In this way, by arranging the joining member 20 at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12 and joining the first formwork panel 11 and the second formwork panel 12, the joint at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12 can be easily performed.

[0062] As shown in FIGS. 14(d) and 14(e), the pipe fixing member 30 has a pipe contact surface 31 that contacts the pipe member 6 and an engaging portion 32 that engages with the joining member 20. After the pipe member 6 is disposed in the pipe recesses 20c1 and 20c2, the pipe fixing member 30 is attached to the joining member 20 by the engaging portion 32, and the pipe member 6 is held by the pipe contact surface 31. In this way, the pipe member 6 can be held by attaching the pipe fixing member 30 to the joining member 20. Note that the joining member 20 has a hole 20d into which the engaging portion 32 can be inserted. The pipe member 6 is held by the pipe recess 20c and the pipe contact surface 31.

[0063] FIG. 15 is a configuration diagram showing still another embodiment of a formwork panel and a joining member used in the formwork panel joining method according to the present invention. FIG. 15(a) shows a first formwork panel 11, a second formwork panel 12, and a joining member 20. As shown in FIG. 15(a), a panel-side first locking portion 11e is formed on the outer surface 11s of the first formwork panel 11 of the first formwork panel 11, and a panel-side second locking portion 12e is formed on the outer surface 12s of the second formwork panel 12 joined adjacent to the first formwork panel 11. The joining member 20 is attached by engaging with the panel-side first locking portion 11e formed at the lower part of the first formwork panel 11 and the panel-side second locking portion 12e formed at the upper part of the second formwork panel 12. FIG. 15(b) is a plan view of the second formwork panel 12 shown in FIG. 15(a). As shown in FIG. 15(b), the panel-side first locking portion 11e and the panel-side second locking portion 12e are formed as panel-side ridge-shaped protrusions.

[0064] FIG. 15(c) is a side view of the joining member 20. The joining member 20 has a member-side locking portion 23e that engages with the panel-side first locking portion 11e and the panel-side second locking portion 12e. The member-side locking portion 23e is formed as a member-side groove-shaped recess.

[0065] FIG. 15(d) is a side view showing a state in which the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12. As shown in FIG. 15(d), the member-side locking portion 23e is engaged with the panel-side first locking portion 11e and the panel-side second locking portion 12e, and the formwork panels are assembled into a wall shape by joining the first formwork panel 11 and the second formwork panel 12. Thus, by using the joining member 20 instead of the ledger, and engaging the member-side locking portion 23e provided on the joining member 20 with the panel-side first locking portion 11e and the panel-side second locking portion 12e, the formwork panels can be assembled into a wall shape by joining the first formwork panel 11 and the second formwork panel 12, which is excellent in workability and can reduce waste materials.

[0066] In this embodiment, as shown in FIG. 15(d), the panel-side ridge-shaped convex portion forming the panel-side first locking portion 11e is formed in a wedge shape by one panel-side ridge wall surface 11ex and the other panel-side ridge wall surface 11ey, and the panel-side ridge-shaped convex portion forming the panel-side second locking portion 12e is formed in a wedge shape by one panel-side ridge wall surface 12ex and the other panel-side ridge wall surface 12ey. The member-side groove-shaped concave portion forming the member-side locking portion 23e has a shape corresponding to the wedge-shaped panel-side ridge-shaped convex portion. Therefore, reliable engagement can be achieved, and even if there are some dimensional errors, engagement can still be performed. By using the joining member 20 according to this embodiment, the first formwork panel 11 and the second formwork panel 12 are joined so that the outer surface 11s of the first formwork panel and the outer surface 12s of the second formwork panel are on the same plane. Thus, by using the joining member 20, the joining of the first formwork panel 11 and the second formwork panel 12 arranged side by side on the same plane can be easily performed.

[0067] FIG. 15(e) shows another joining member 20. When the panel-side first locking portion 11e and the panel-side second locking portion 12e are formed by panel-side groove-shaped concave portions, the member-side locking portion 23f is formed by a member-side ridge-shaped convex portion.

[0068] FIG. 16 is a configuration diagram showing an embodiment of a pipe fixing dedicated member used in the method for joining formwork panels according to the present invention. FIG. 16(a) shows the first formwork panel 11, the second formwork panel 12, and the pipe fixing dedicated member 40. In FIG. 16(a), the first formwork panel 11 and the second formwork panel 12 shown in FIG. 6(a) are shown. In this embodiment, the description will be given using the panel-side first locking portion 11c formed on the outer surface 11s of the first formwork panel 11 and the panel-side second locking portion 12c formed on the outer surface 12s of the second formwork panel 12, but other locking portions can also be used. The pipe fixing dedicated member 40 is engaged with the panel-side first locking portion 11c or the panel-side second locking portion 12c and positions the pipe material 6 mounted on the outer surface 11s of the first formwork panel or the outer surface 12s of the second formwork panel.

[0069] FIG. 16(b) is a side view of the pipe fixing dedicated member 40. The pipe fixing dedicated member 40 has a pipe contact surface 41 that contacts the pipe material 6 and a pipe fixing dedicated member side locking portion 42a that engages with the panel-side first locking portion 11c or the panel-side second locking portion 12c. The pipe fixing dedicated member side locking portion 42a is formed as a member-side groove-shaped recess.

[0070] FIG. 16(c) is a side view showing a state in which the pipe fixing dedicated member 40 is engaged with the first formwork panel 11 or the second formwork panel 12. As shown in FIG. 16(c), the panel-side first locking portion 11c and the panel-side second locking portion 12c are formed as panel-side groove-shaped recesses. By engaging the pipe fixing dedicated member side locking portion 42a with the panel-side first locking portion 11c or the panel-side second locking portion 12c, the pipe material 6 can be held by the pipe contact surface 41. The panel-side ridge-shaped convex portion forming the panel-side first locking portion 11c is formed in a wedge shape by one panel-side ridge wall surface 11cx and the other panel-side ridge wall surface 11cy, and the panel-side ridge-shaped convex portion forming the panel-side second locking portion 12c is formed in a wedge shape by one panel-side ridge wall surface 12cx and the other panel-side ridge wall surface 12cy. The member-side groove-shaped recess forming the pipe fixing dedicated member side locking portion 42a has a shape corresponding to the wedge-shaped panel-side ridge-shaped convex portion. Therefore, reliable engagement can be performed, and even if there are some dimensional errors, engagement can be carried out.

[0071] FIG. 16(d) shows another dedicated pipe fixing member 40. When the first panel-side locking portion and the second panel-side locking portion are formed by the panel-side groove-shaped recess, the dedicated pipe fixing member-side locking portion 42a is formed by the member-side ridge-shaped protrusion. In this way, by using the dedicated pipe fixing member 40, the installation of the pipe material 6 that supports the load applied to the formwork panel during concrete placement can be easily performed.

[0072] FIG. 17 is a configuration diagram showing another usage of the joining member and the dedicated pipe fixing member in the formwork panel joining method according to this embodiment. FIG. 17(a) is a top view of a main part of a structure in a construction state, FIG. 17(b) is a side view of the joining member shown in FIG. 6, FIG. 17(c) is a side view of the joining member shown in FIG. 4, and FIG. 17(d) is a side view of the dedicated pipe fixing member shown in FIG. 16. FIG. 17(a) shows a state where the joining member 20 and the dedicated pipe fixing member 40 are nailed to the laying timber 7 on the base 1. As shown in FIGS. 17(b) and 17(c), nail holes 20e are formed in the joining member 20, and as shown in FIG. 17(d), nail holes 40e are formed in the dedicated pipe fixing member 40. The joining member 20 and the dedicated pipe fixing member 40 can be nailed to the laying timber 7 by driving nails into the nail holes 20e and 40e. Note that for the joining member 20, the hole 20d can also be used for nailing. In this way, the joining member 20 and the dedicated pipe fixing member 40 according to this embodiment can also be attached to the laying timber 7 and used.

[0073] As described above, according to this embodiment, the joining member 20 can join the first formwork panel 11 and the second formwork panel 12 without using a timber, and after joining the first formwork panel 11 and the second formwork panel 12, by arranging the pipe material 6 in the first pipe recess 20c1 or the second pipe recess 20c2, the joining member 20 can hold the pipe material 6. Thus, the joining member 20 can also be used for installing the pipe material 6 that supports the load applied to the formwork panel 10 during concrete placement.

[0074] FIG. 18 is a configuration diagram showing still another embodiment of the formwork panel and the joining member used in the formwork panel joining method according to the present invention. FIG. 18(a) shows the first formwork panel 11, the second formwork panel 12, and the joining member 20. As shown in FIG. 18(a), on the outer surface 11s of the first formwork panel 11 of the first formwork panel 11, a first panel-side locking portion 11f is formed, and on the outer surface 12s of the second formwork panel 12 joined adjacent to the first formwork panel 11, a second panel-side locking portion 12f is formed. The joining member 20 is attached by engaging with the first panel-side locking portion 11f formed at the lower part of the first formwork panel 11 and the second panel-side locking portion 12f formed at the upper part of the second formwork panel 12. Also, the joining member 20 is attached by engaging with the first panel-side locking portion 11f formed at the side part of the first formwork panel 11 and the second panel-side locking portion 12f formed at the side part of the second formwork panel 12.

[0075] FIG. 18(b) is a plan view of the second formwork panel 12 shown in FIG. 18(a). As shown in FIG. 18(b), the first panel-side locking portion 11f and the second panel-side locking portion 12f are formed as panel-side groove-shaped recesses. The first panel-side locking portion 11f is continuously formed at the upper part, lower part, and both side parts of the first formwork panel 11 from one end side surface to the other end side surface of the first formwork panel 11. Also, the second panel-side locking portion 12f is continuously formed at the upper part, lower part, and both side parts of the second formwork panel 12 from one end side surface to the other end side surface of the second formwork panel 12. Thus, since the panel-side first locking portion 11f is continuously formed from one end-side surface to the other end-side surface of the first formwork panel 11, and the panel-side second locking portion 12f is continuously formed from one end-side surface to the other end-side surface of the second formwork panel 12, even if the first formwork panel 11 and the second formwork panel 12 are displaced for some reason, the joining member 20 can be attached.

[0076] FIG. 18(c) is a side view showing a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, and FIG. 18(d) is a side view of the main part of the first formwork panel 11 and the second formwork panel 12. The joining member 20 has a member-side first locking portion 21e that engages with the panel-side first locking portion 11f and a member-side second locking portion 22e that engages with the panel-side second locking portion 12f. The member-side first locking portion 21e and the member-side second locking portion 22e are formed as member-side ridge-shaped convex portions. As shown in FIGS. 18(c) and 18(d), the member-side first locking portion 21e is engaged with the panel-side first locking portion 11f, and the member-side second locking portion 22e is engaged with the panel-side second locking portion 12f, and the first formwork panel 11 and the second formwork panel 12 are joined to assemble the formwork panels into a wall shape. Thus, by using the joining member 20 instead of using the cross member, and engaging the member-side first locking portion 21e and the member-side second locking portion 22e provided in the joining member 20 with the panel-side first locking portion 11f and the panel-side second locking portion 12f to join the first formwork panel 11 and the second formwork panel 12, the formwork panels can be assembled into a wall shape, which is excellent in workability and can reduce waste materials.

[0077] In this embodiment, as shown in FIG. 18(d), one panel-side groove wall surface 11fx of the panel-side groove-shaped recess that forms the panel-side first locking portion 11f is an inclined surface with respect to the outer surface 11s of the first formwork panel, and the other panel-side groove wall surface 11fy of the panel-side groove-shaped recess is an inclined surface with respect to the outer surface 11s of the first formwork panel, and the panel-side groove-shaped recess is formed such that the bottom surface is wider than the opening surface. Further, one panel-side groove wall surface 12fx of the panel-side groove-shaped recess that forms the panel-side second locking portion 12f is an inclined surface with respect to the outer surface 12s of the second formwork panel, and the other panel-side groove wall surface 12fy of the panel-side groove-shaped recess is an inclined surface with respect to the outer surface 12s of the second formwork panel. The panel-side groove-shaped recess is formed such that the bottom surface is wider than the opening surface. Also, as shown in FIG. 18(c), the member-side ridge-shaped protrusion that forms the member-side first locking portion 21e is formed with an inclined surface such that one member-side ridge wall surface 21ex abuts against one panel-side groove wall surface 11fx, and the other member-side ridge wall surface 21ey is formed with an inclined surface so as to abut against the other panel-side groove wall surface 11fy. Also, the member-side ridge-shaped protrusion that forms the member-side second locking portion 22e is formed with an inclined surface such that one member-side ridge wall surface 22ex abuts against one panel-side groove wall surface 12fx, and the other member-side ridge wall surface 22ey is formed with an inclined surface so as to abut against the other panel-side groove wall surface 12fy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, in the member-side first locking portion 21e, one member-side ridge wall surface 21ex abuts against one panel-side groove wall surface 11fx, and the other member-side ridge wall surface 21ey abuts against the other panel-side groove wall surface 11fy. In the member-side second locking portion 22e, one member-side ridge wall surface 22ex abuts against one panel-side groove wall surface 12fx, and the other member-side ridge wall surface 22ey abuts against the other panel-side groove wall surface 12fy. In this way, since the one panel-side groove wall surfaces 11fx, 12fx and the other panel-side groove wall surfaces 11fy, 12fy are inclined surfaces with respect to the outer surfaces 11s, 12s of the formwork panels, reliable engagement can be achieved, and even if a slight dimensional error occurs, engagement can be performed.

[0078] The joining member 20 according to this embodiment forms the member-side first locking portion 21e and the member-side second locking portion 22e on the same plane. Therefore, by using the joining member 20, the first formwork panel 11 and the second formwork panel 12 are joined such that the outer surface 11s of the first formwork panel and the outer surface 12s of the second formwork panel are on the same plane. In this way, by using the joint member 20, the joining of the first formwork panel 11 and the second formwork panel 12 arranged side by side on the same plane can be easily performed.

[0079] FIG. 19 is a perspective view showing the joint member shown in FIG. 18. As shown in FIG. 19, the joint member 20 has a one-sided joint member 20L that forms a member-side first locking portion 21e and an other-sided joint member 20R that forms a member-side second locking portion 22e. The one-sided joint member 20L has a one-sided joint member locking portion 21L that engages with the other-sided joint member 20R, and the other-sided joint member 20R has an other-sided joint member locking portion 21R that engages with the one-sided joint member 20L. The one-sided joint member 20L and the other-sided joint member 20R are configured by providing a groove-shaped recess 21r and a ridge-shaped projection 21h side by side. The groove-shaped recess 21r and the ridge-shaped projection 21h have the same length, and the groove-shaped recess 21r and the ridge-shaped projection 21h forming the one-sided joint member 20L have the same shape as the groove-shaped recess 21r and the ridge-shaped projection 21h forming the other-sided joint member 20R. That is, the one-sided joint member 20L and the other-sided joint member 20R are the same member. In this way, by engaging the one-sided joint member locking portion 21L and the other-sided joint member locking portion 21R, the one-sided joint member 20L and the other-sided joint member 20R are connected, the member-side first locking portion 21e is engaged with the panel-side first locking portion 11f, the member-side second locking portion 22e is engaged with the panel-side second locking portion 12f, and in a state where the one-sided joint member 20L and the other-sided joint member 20R are connected, the first formwork panel 11 and the second formwork panel 12 are joined.

[0080] As described above, according to the present embodiment, the panel-side first locking portion 11f is continuously formed from one end side surface to the other end side surface of the first formwork panel 11, and the panel-side second locking portion 12f is continuously formed from one end side surface to the other end side surface of the second formwork panel 12. Therefore, by inserting the member-side first locking portion 21e from one end side surface or the other end side surface of the first formwork panel 11, it can be engaged with the panel-side first locking portion 11f, and by inserting the member-side second locking portion 22e from one end side surface or the other end side surface of the second formwork panel 12, it can be engaged with the panel-side second locking portion 12f. Also, according to the present embodiment, by dividing the joining member 20 into the one-side joining member 20L that forms the member-side first locking portion 21e and the other-side joining member 20R that forms the member-side second locking portion 22e, the engagement of the member-side first locking portion 21e with the panel-side first locking portion 11f and the engagement of the member-side second locking portion 22e with the panel-side second locking portion 12f can be easily performed.

[0081] FIG. 20 is a configuration diagram showing still another embodiment of the formwork panel and the joining member used in the formwork panel joining method according to the present invention. The joining member 20 according to the present embodiment is disposed at the inner corner of the abutment between the first formwork panel 11 and the second formwork panel 12. The joining member 20 according to the present embodiment is used for the first formwork panel 11 and the second formwork panel 12 shown in FIG. 18. The joining member 20 has a member-side first locking portion 21f that engages with the panel-side first locking portion 11f and a member-side second locking portion 22f that engages with the panel-side second locking portion 12f. The member-side first locking portion 21f and the member-side second locking portion 22f are formed by member-side ridge-shaped convex portions.

[0082] The member-side ridge-shaped convex portion that forms the member-side first locking portion 21f is formed with an inclined surface such that one member-side ridge wall surface 21fx abuts against one panel-side groove wall surface 11fx, and the other member-side ridge wall surface 21fy is formed with an inclined surface such that it abuts against the other panel-side groove wall surface 11fy. In addition, the member-side ridge-shaped convex portion that forms the member-side second locking portion 22f is formed with inclined surfaces such that one member-side ridge wall surface 22fx abuts against one panel-side groove wall surface 12fx, and the other member-side ridge wall surface 22fy abuts against the other panel-side groove wall surface 12fy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, in the member-side first locking portion 21f, the one member-side ridge wall surface 21fx abuts against the one panel-side groove wall surface 11fx, the other member-side ridge wall surface 21fy abuts against the other panel-side groove wall surface 11fy, in the member-side second locking portion 22f, the one member-side ridge wall surface 22fx abuts against the one panel-side groove wall surface 12fx, and the other member-side ridge wall surface 22fy abuts against the other panel-side groove wall surface 12fy. In this way, since the one panel-side groove wall surfaces 11fx, 12fx and the other panel-side groove wall surfaces 11fy, 12fy are inclined surfaces with respect to the outer surfaces 11s, 12s of the formwork panels, reliable engagement can be achieved and engagement can be carried out even if there are some dimensional errors. In this way, by arranging the joining member 20 at the inner corner of the joint between the first formwork panel 11 and the second formwork panel 12 and joining the first formwork panel 11 and the second formwork panel 12, the joint at the inner corner of the joint between the first formwork panel 11 and the second formwork panel 12 can be easily carried out.

[0083] The joining member 20 according to this embodiment has a one-side joining member 20L that forms the member-side first locking portion 21f and an other-side joining member 20R that forms the member-side second locking portion 22f. The one-side joining member 20L has a one-side joining member locking portion 21L that engages with the other-side joining member 20R, and the other-side joining member 20R has an other-side joining member locking portion 21R that engages with the one-side joining member 20L. The one-side joining member 20L is constituted by a groove-shaped recess, and the other-side joining member 20R is constituted by a ridge-shaped convex portion. In this way, by engaging the one-side joining member locking portion 21L and the other-side joining member locking portion 21R, the one-side joining member 20L and the other-side joining member 20R are connected, the member-side first locking portion 21f is engaged with the panel-side first locking portion 11f, the member-side second locking portion 22f is engaged with the panel-side second locking portion 12f, and in a state where the one-side joining member 20L and the other-side joining member 20R are connected, the first formwork panel 11 and the second formwork panel 12 are joined.

[0084] As described above, according to this embodiment, the panel-side first locking portion 11f is continuously formed from one end side surface to the other end side surface of the first formwork panel 11, and the panel-side second locking portion 12f is continuously formed from one end side surface to the other end side surface of the second formwork panel 12. Therefore, by inserting the member-side first locking portion 21f from one end side surface or the other end side surface of the first formwork panel 11, it can be engaged with the panel-side first locking portion 11f, and by inserting the member-side second locking portion 22f from one end side surface or the other end side surface of the second formwork panel 12, it can be engaged with the panel-side second locking portion 12f. Moreover, according to this embodiment, the joining member 20 is divided into the one-side joining member 20L that forms the member-side first locking portion 21f and the other-side joining member 20R that forms the member-side second locking portion 22f, so that the engagement of the member-side first locking portion 21f with the panel-side first locking portion 11f and the engagement of the member-side second locking portion 22f with the panel-side second locking portion 12f can be easily performed.

[0085] FIG. 21 is a configuration diagram showing still another embodiment of a formwork panel and a joining member used in a method for joining formwork panels according to the present invention. The joining member 20 according to this embodiment is disposed at the inner corner of the abutment between the first formwork panel 11 and the second formwork panel 12. The joining member 20 according to this embodiment is used for the first formwork panel 11 and the second formwork panel 12 shown in FIG. 18. The joining member 20 has a member-side first locking portion 21g that engages with the panel-side first locking portion 11f and a member-side second locking portion 22g that engages with the panel-side second locking portion 12f. The member-side first locking portion 21g and the member-side second locking portion 22g are formed by member-side ridge-shaped convex portions.

[0086] The member-side ridge-shaped convex portion that forms the member-side first locking portion 21g is formed with inclined surfaces such that one member-side ridge wall surface 21gx abuts against one panel-side groove wall surface 11fx, and the other member-side ridge wall surface 21gy abuts against the other panel-side groove wall surface 11fy. Also, the member-side ridge-shaped convex portion that forms the member-side second locking portion 22g is formed with inclined surfaces such that one member-side ridge wall surface 22gx abuts against one panel-side groove wall surface 12fx, and the other member-side ridge wall surface 22gy abuts against the other panel-side groove wall surface 12fy. Therefore, in a state where the joining member 20 is engaged with the first formwork panel 11 and the second formwork panel 12, for the member-side first locking portion 21g, one member-side ridge wall surface 21gx abuts against one panel-side groove wall surface 11fx, and the other member-side ridge wall surface 21gy abuts against the other panel-side groove wall surface 11fy. For the member-side second locking portion 22g, one member-side ridge wall surface 22gx abuts against one panel-side groove wall surface 12fx, and the other member-side ridge wall surface 22gy abuts against the other panel-side groove wall surface 12fy. In this way, since the one panel-side groove wall surfaces 11fx, 12fx and the other panel-side groove wall surfaces 11fy, 12fy are inclined surfaces with respect to the formwork panel outer surfaces 11s, 12s, reliable engagement can be achieved and engagement can be performed even if there are some dimensional errors. In this way, by arranging the joining member 20 at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12 and joining the first formwork panel 11 and the second formwork panel 12, the joint at the outer corner of the joint between the first formwork panel 11 and the second formwork panel 12 can be easily performed.

[0087] The joining member 20 according to this embodiment has a one-side joining member 20L that forms the member-side first locking portion 21g and an other-side joining member 20R that forms the member-side second locking portion 22g. The one-side joining member 20L has a one-side joining member locking portion 21L that engages with the other-side joining member 20R, and the other-side joining member 20R has an other-side joining member locking portion 21R that engages with the one-side joining member 20L. The one-side joining member 20L is constituted by a groove-shaped recess, and the other-side joining member 20R is constituted by a ridge-shaped convex portion. In this way, by engaging the one-side joining member locking portion 21L and the other-side joining member locking portion 21R, the one-side joining member 20L and the other-side joining member 20R are connected. The member-side first locking portion 21g is engaged with the panel-side first locking portion 11f, and the member-side second locking portion 22g is engaged with the panel-side second locking portion 12f. In a state where the one-side joining member 20L and the other-side joining member 20R are connected, the first formwork panel 11 and the second formwork panel 12 are joined together.

[0088] As described above, according to this embodiment, since the panel-side first locking portion 11f is continuously formed from one end-side surface to the other end-side surface of the first formwork panel 11, and the panel-side second locking portion 12f is continuously formed from one end-side surface to the other end-side surface of the second formwork panel 12, the member-side first locking portion 21g can be inserted from one end-side surface or the other end-side surface of the first formwork panel 11 and engaged with the panel-side first locking portion 11f, and the member-side second locking portion 22g can be inserted from one end-side surface or the other end-side surface of the second formwork panel 12 and engaged with the panel-side second locking portion 12f. Moreover, according to this embodiment, since the joining member 20 is divided into the one-side joining member 20L that forms the member-side first locking portion 21g and the other-side joining member 20R that forms the member-side second locking portion 22g, the engagement of the member-side first locking portion 21g with the panel-side first locking portion 11f and the engagement of the member-side second locking portion 22g with the panel-side second locking portion 12f can be easily performed.

Industrial Applicability

[0089] The method for joining formwork panels according to the present invention can be used in construction when placing concrete.

Explanation of Reference Numerals

[0090] 1 Foundation 2 Space 3 Beam support member 4 Pipe support 5 Fastening fitting 5a Separator 5b Cone 5c Fastening fitting body 5d washer 6 pipe material 6a vertical pipe material 6b horizontal pipe material 7 floor joist 10 formwork panel 10a, 10b, 10c wall 11 first formwork panel 11a panel-side first locking part 11ax one-side panel-side ridge wall surface 11ay other-side panel-side ridge wall surface 11b panel-side first locking part 11bx one-side panel-side groove wall surface 11by other-side panel-side groove wall surface 11c panel-side first locking part 11cx one-side panel-side ridge wall surface 11cy other-side panel-side ridge wall surface 11d panel-side first locking part 11dx one-side panel-side groove wall surface 11dy other-side panel-side groove wall surface 11e panel-side first locking part 11ex one-side panel-side ridge wall surface 11ey other-side panel-side ridge wall surface 11f panel-side first locking part 11fx one-side panel-side groove wall surface 11fy other-side panel-side groove wall surface 11s first formwork panel outer surface 12 second formwork panel 12a panel-side second locking part 12ax one-side panel-side ridge wall surface 12ay other-side panel-side ridge wall surface 12b panel-side second locking part 12bx one-side panel-side groove wall surface 12by other-side panel-side groove wall surface 12c panel-side second locking part 12cx one-side panel-side ridge wall surface 12cy other-side panel-side ridge wall surface 12d panel-side second locking part 12dx one-side panel-side groove wall surface 12dy Other side panel side groove wall surface 12e Panel side second locking part 12ex One side panel side ridge wall surface 12ey Other side panel side ridge wall surface 12f Panel side second locking part 12fx One side panel side groove wall surface 12fy Other side panel side groove wall surface 12s Second type formwork panel outer surface 20 Joining member 20L One side joining member 20R Other side joining member 20b Member side pipe contact surface 20b1 First member side pipe contact surface 20b2 Second member side pipe contact surface 20c Pipe recess 20c1 First pipe recess 20c2 Second pipe recess 20d Hole 20e Hole for nailing 20s Member side panel contact surface 20s1 First panel contact surface 21a Member side first locking part 21ax One side member side groove wall surface 21ay Other side member side groove wall surface 21b Member side first locking part 21bx One side member side ridge wall surface 21by Other side member side ridge wall surface 21c Member side first locking part 21cx One side member side groove wall surface 21cy Other side member side groove wall surface 21d Member side first locking part 21dx One side member side ridge wall surface 21dy Other side member side ridge wall surface 21e Member side first locking part 21ex One side member side ridge wall surface 21ey Other side member side ridge wall surface 21f Member side first locking part 21fx One side member side ridge wall surface 21fy Other side member side ridge wall surface 21g member-side first locking part 21gx one-member-side ridge wall surface 21gy other-member-side ridge wall surface 21h ridge-shaped convex part 21r groove-shaped concave part 21L one-side joint member locking part 21R other-side joint member locking part 22a member-side second locking part 22ax one-member-side groove wall surface 22ay other-member-side groove wall surface 22b member-side second locking part 22bx one-member-side ridge wall surface 22by other-member-side ridge wall surface 22c member-side second locking part 22cx one-member-side groove wall surface 22cy other-member-side groove wall surface 22d member-side second locking part 22dx one-member-side ridge wall surface 22dy other-member-side ridge wall surface 22e member-side second locking part 22ex one-member-side ridge wall surface 22ey other-member-side ridge wall surface 22f member-side second locking part 22fx one-member-side ridge wall surface 22fy other-member-side ridge wall surface 22g member-side second locking part 22gx one-member-side ridge wall surface 22gy other-member-side ridge wall surface 22s2 second panel contact surface 23e member-side locking part 23f member-side locking part 30 pipe fixing member 31 pipe contact surface 32 engaging part 40 pipe fixing dedicated member 40e hole for nailing 41 pipe contact surface 42a pipe fixing dedicated member-side locking part

Claims

1. A formwork panel joining method for use in construction when placing concrete, wherein the formwork panels are joined using joining members instead of crossbeams, on the outer surface of the first formwork panel of the first formwork panel, a first locking portion on the panel side is formed, on the outer surface of the second formwork panel of the second formwork panel joined adjacent to the first formwork panel, a second locking portion on the panel side is formed, the joining member is, a first locking portion on the member side that engages with the first locking portion on the panel side, and a second locking portion on the member side that engages with the second locking portion on the panel side and has, by engaging the first locking portion on the member side with the first locking portion on the panel side and engaging the second locking portion on the member side with the second locking portion on the panel side, the first formwork panel and the second formwork panel are joined to assemble the formwork panels into a wall shape A formwork panel joining method characterized by the above.

2. The first locking portion on the panel side is continuously formed from one end side surface to the other end side surface of the first formwork panel, the second locking portion on the panel side is continuously formed from one end side surface to the other end side surface of the second formwork panel, the first locking portion on the member side is inserted from the one end side surface or the other end side surface of the first formwork panel to engage with the first locking portion on the panel side, the second locking portion on the member side is inserted from the one end side surface or the other end side surface of the second formwork panel to engage with the second locking portion on the panel side The formwork panel joining method according to claim 1, characterized by the above.

3. The joining member is, one side joining member forming the first locking portion on the member side, and the other side joining member forming the second locking portion on the member side and has, the one side joining member has a one side joining member locking portion that engages with the other side joining member, the other side joining member has an other side joining member locking portion that engages with the one side joining member, by engaging the one side joining member locking portion and the other side joining member locking portion, the one side joining member and the other side joining member are connected, the first locking portion on the member side is engaged with the first locking portion on the panel side, the second locking portion on the member side is engaged with the second locking portion on the panel side, and in a state where the one side joining member and the other side joining member are connected, the first formwork panel and the second formwork panel are joined The formwork panel joining method according to claim 2, characterized by the above.

4. The first locking portion on the panel side and the second locking portion on the panel side are formed as convex ridge portions on the panel side, The first and second locking portions on the member side are formed by a groove-shaped recess on the member side. One panel-side ridge wall surface of the panel-side ridge-shaped protrusion is a vertical surface with respect to the outer surfaces of the first formwork panel and the second formwork panel. The other panel-side ridge wall surface of the panel-side ridge-shaped protrusion is an inclined surface with respect to the one panel-side ridge wall surface. One member-side groove wall surface of the member-side groove-shaped recess is brought into contact with the one panel-side ridge wall surface. The other member-side groove wall surface of the member-side groove-shaped recess is brought into contact with the other panel-side ridge wall surface. The method for joining formwork panels according to claim 1, characterized by the above.

5. The first and second locking portions on the panel side are formed by a groove-shaped recess on the panel side. The first and second locking portions on the member side are formed by a ridge-shaped protrusion on the member side. One panel-side groove wall surface of the panel-side groove-shaped recess is a vertical surface with respect to the outer surfaces of the first formwork panel and the second formwork panel. The other panel-side groove wall surface of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface. One member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the one panel-side groove wall surface. The other member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the other panel-side groove wall surface. The method for joining formwork panels according to claim 1, characterized by the above.

6. The first locking portion on the panel side is formed by a ridge-shaped protrusion on the panel side. The second locking portion on the panel side is formed by a groove-shaped recess on the panel side. The first locking portion on the member side is formed by a groove-shaped recess on the member side. The second locking portion on the member side is formed by a ridge-shaped protrusion on the member side. One panel-side ridge wall surface of the panel-side ridge-shaped protrusion is a vertical surface with respect to the outer surface of the first formwork panel. The other panel-side ridge wall surface of the panel-side ridge-shaped protrusion is an inclined surface with respect to the one panel-side ridge wall surface. One panel-side groove wall surface of the panel-side groove-shaped recess is a vertical surface with respect to the outer surface of the second formwork panel. The other panel-side groove wall surface of the panel-side groove-shaped recess is an inclined surface with respect to the one panel-side groove wall surface. One member-side groove wall surface of the member-side groove-shaped recess is brought into contact with the one panel-side ridge wall surface. The other member-side groove wall surface of the member-side groove-shaped recess is brought into contact with the other panel-side ridge wall surface. One member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the one panel-side groove wall surface. The other member-side ridge wall surface of the member-side ridge-shaped protrusion is brought into contact with the other panel-side groove wall surface. The method for joining formwork panels according to claim 1, characterized by the above.

7. The first and second locking portions on the member side are formed on the same plane. By the joining member, the first formwork panel and the second formwork panel are joined such that the outer surface of the first formwork panel and the outer surface of the second formwork panel are in the same plane. The method for joining formwork panels according to claim 1, characterized in that.

8. A pipe recess for positioning a pipe material mounted on the panel outer surface of the formwork panel is formed on a member-side pipe contact surface adjacent to the member-side panel contact surface on which the member-side first locking portion and the member-side second locking portion are formed. After joining the first formwork panel and the second formwork panel by the joining member, the pipe material is disposed in the pipe recess. The method for joining formwork panels according to claim 7, characterized in that.

9. The first formwork panel and the second formwork panel are joined by disposing the joining member at an inner corner or an outer corner of the joint between the first formwork panel and the second formwork panel. The method for joining formwork panels according to claim 1, characterized in that.

10. A first pipe recess for positioning a pipe material mounted on the panel outer surface of the formwork panel is formed on a first member-side pipe contact surface adjacent to the first panel contact surface on which the member-side first locking portion is formed. A second pipe recess for positioning the pipe material is formed on a second member-side pipe contact surface adjacent to the second panel contact surface on which the member-side second locking portion is formed. After joining the first formwork panel and the second formwork panel by the joining member, the pipe material is disposed in the first pipe recess or the second pipe recess. The method for joining formwork panels according to claim 9, characterized in that.

11. It has a pipe fixing member attached to the joining member. The pipe fixing member. A pipe contact surface that contacts the pipe material. An engaging portion that engages with the joining member. And has. After disposing the pipe material in the pipe recess, the pipe fixing member is attached to the joining member by the engaging portion, thereby holding the pipe material by the pipe contact surface. The method for joining formwork panels according to claim 8, characterized in that.

12. The joining member is formed with nail driving holes. The joining member is nailed to the purlin using the nail driving holes. The method for joining formwork panels according to claim 1, characterized in that.

13. It has a pipe fixing dedicated member for positioning a pipe material mounted on the panel outer surface of the formwork panel. On the outer surface of the formwork panel of the formwork panel, a panel-side locking portion is formed. The dedicated pipe fixing member has a dedicated pipe fixing member side locking portion that engages with the panel side locking portion, and by engaging the dedicated pipe fixing member side locking portion with the panel side locking portion, the pipe member is held by the dedicated pipe fixing member. The method for joining formwork panels according to claim 1, characterized by the above.

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