Construction methods for structures

Abstract

This invention provides a construction method for structures that allows for easy joining of structural members while ensuring structural performance, watertightness, and thermal insulation at the joints between structural members. [Solution] The manufacturing process includes manufacturing structural members 1 using an additive manufacturing apparatus, arranging the structural members 1, and joining the structural members 1,1 together. At least one of adjacent structural members 1,1 has a main body portion 3 and a groove-forming portion 4 provided along the edge of the main body portion 3 and having a groove portion 43 formed along the edge of the main body portion 3. In the arranging process, a cylindrical cavity 21 is formed between adjacent structural members 1,1 with the opening of the groove portion 43 closed. In the joining process, a joining material 22 is filled into the cylindrical cavity 21.

Description

Technical Field

[0006] , , , ,

[0001] The present invention relates to a construction method of a structure.

Background Art

[0002] In recent years, an additive manufacturing technology has been proposed in which a cement-based material is additively manufactured to form a structural member (see, for example, Patent Document 1). It is difficult to construct an entire structure such as a building frame with a 3D printer (additive manufacturing apparatus) because of the size of the additive manufacturing apparatus and the like. Therefore, when constructing a structure using the additive manufacturing technology, structural members manufactured by the additive manufacturing apparatus are joined together at the site.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Manufacture of structural members by an additive manufacturing apparatus is less accurate than manufacture of structural members by a formwork method. Therefore, it takes labor to join the structural members together, and there is a risk that the structural performance, watertight performance, heat insulation performance, etc. at the joint portion between the structural members cannot be ensured. <00000s27> Therefore, an object of the present invention is to provide a construction method of a structure that can easily join structural members together and can ensure the structural performance, watertight performance, heat insulation performance, etc. at the joint portion between the structural members.

Means for Solving the Problems

[0006] To achieve the above objective, the construction method for a structure according to the present invention comprises a manufacturing step of manufacturing structural members with an additive manufacturing device, an arrangement step of arranging the structural members, and a joining step of joining the structural members together, wherein at least one of adjacent structural members has a main body and a groove-forming portion provided along the edge of the main body and having a groove extending along the edge of the main body, and in the arrangement step, a cylindrical cavity is formed between adjacent structural members with the opening of the groove closed, and in the joining step, a joining material is filled into the cylindrical cavity.

[0007] In this invention, adjacent structural members can be easily joined together by filling a tubular cavity formed between them with a bonding material. Since the adjacent structural members are joined by the bonding material filled in the tubular cavity formed between them, the combined strength of the cross-sections of both members can be achieved, ensuring structural performance, and the adjacent structural members can be joined without gaps, thus ensuring watertightness and thermal insulation performance.

[0008] In the construction method for the structure according to the present invention, the cylindrical cavity may be provided with a first reinforcing bar extending in the same direction as the groove.

[0009] In the construction method for the structure according to the present invention, a second reinforcing bar surrounding the first reinforcing bar may be provided in the cylindrical cavity.

[0010] This configuration improves the structural performance of the interior of the cylindrical cavity, that is, the joint between adjacent structural members.

[0011] In the construction method for a structure according to the present invention, in the manufacturing process, a first reinforcing bar support portion for supporting the first reinforcing bar may be formed in the groove forming portion.

[0012] This configuration allows for easy placement of the first reinforcing bar.

[0013] In the construction method for the structure according to the present invention, the groove forming portion may be provided along both side edges of the main body portion during the manufacturing process.

[0014] By adopting such a configuration, a cylindrical hollow portion can be formed by combining the inside of the groove portions of adjacent structural members. The arrangement of the structural members in the arrangement process becomes easy.

[0015] In the construction method of the structure according to the present invention, in the manufacturing process, a hollow portion may be formed in the main body portion.

[0016] By adopting such a configuration, an air layer or a space (hollow portion) for installing equipment can be easily formed in the main body portion of the structural member.

[0017] The construction method of the structure according to the present invention may include a heat insulating material installation step of installing a heat insulating material inside the structural member.

[0018] By adopting such a configuration, the heat insulation performance of the structure constructed by joining the structural members can be improved. The heat insulating material can be easily installed.

Effects of the Invention

[0019] According to the present invention, the structural members can be easily joined to each other, and the structural performance, watertight performance, heat insulation performance, etc. at the joint portion between the structural members can be ensured.

Brief Description of the Drawings

[0020] [Figure 1] It is a cross-sectional view of the wall portion of the first embodiment. [Figure 2] It is a cross-sectional view of the structural member of the first embodiment. [Figure 3] It is a cross-sectional view of the structural member of the second embodiment. [Figure 4] It is a cross-sectional view of the structural member according to a modified example of the second embodiment. [Figure 5] It is a cross-sectional view of the structural member of the third embodiment. [Figure 6] It is a cross-sectional view of the structural member of the fourth embodiment. [Figure 7] It is a plan view of the wall portion according to a modified example of the embodiment. [Figure 8] It is a cross-sectional view of a wall portion according to a modified example of the embodiment. [Figure 9] It is a cross-sectional view of a wall portion according to another modified example of the embodiment.

MODE FOR CARRYING OUT THE INVENTION

[0021] (First Embodiment) Hereinafter, a construction method of a structure according to an embodiment of the present invention will be described based on FIGS. 1-FIG. 2. The construction method of the structure according to the present embodiment is a method of joining a plurality of structural members 1, 1,... shown in FIG. 1 to construct a wall portion 11 (structure) of a building. The plurality of structural members 1, 1,... are each manufactured by an additive manufacturing apparatus such as a 3D printer. For example, the plurality of structural members 1, 1,... are each manufactured by laminating a cement-based material. The plurality of structural members 1, 1,... are each in a flat plate shape, and are arranged in a direction along the wall surface of the wall portion 11 with the plate surface facing the vertical surface. Hereinafter, the horizontal direction along the plate surface when the structural member 1 is installed will be referred to as the width direction, the horizontal direction orthogonal to the plate surface of the structural member 1 will be referred to as the thickness direction, and the vertical direction will be referred to as the height direction. The structural members 1 are arranged in the width direction.

[0022] A cylindrical hollow portion 21 extending in the vertical direction is formed between the structural members 1, 1 adjacent to each other in the width direction, that is, the arrangement direction. The cylindrical hollow portion 21 is filled with a joining material 22. The joining material 22 is, for example, a cement-based material. The structural members 1, 1 arranged in the width direction are joined by the joining material 22 filled in the cylindrical hollow portion 21. A plurality of main reinforcing bars 23 and a plurality of stirrups 24 (shear reinforcing bars) are arranged in the cylindrical hollow portion 21 and embedded in the joining material 22. The joining material 22 filled in the cylindrical hollow portion 21, the plurality of main reinforcing bars 23 and the plurality of stirrups 24 arranged in the cylindrical hollow portion 21 construct a column 2. The structural member 1 and the plurality of stirrups 24 construct the wall portion 11. The main reinforcing bar 23 corresponds to the first reinforcing bar in the claims. The stirrup 24 corresponds to the second reinforcing bar in the claims. The plurality of main reinforcing bars 23 extend in a posture extending in the same direction as the cylindrical hollow portion 21, that is, in the vertical direction. The plurality of stirrups 24 surround the plurality of main reinforcing bars 23.

[0023] As shown in Figure 2, the structural member 1 has a main body portion 3 and a groove forming portion 4. The main body portion 3 is plate-shaped. Inside the main body portion 3, there are a first hollow portion 37, a second hollow portion 38, and a third hollow portion 39, each extending in the vertical direction. The main body portion 3 has a front plate portion 31, a rear plate portion 32, a first side plate portion 33, a second side plate portion 34, a first inner plate portion 35, and a second inner plate portion 36. The front plate portion 31 forms one side surface of the main body portion 3 in the thickness direction. The rear plate portion 32 forms the other side surface of the main body portion 3 in the thickness direction. The front plate portion 31 and the rear plate portion 32 are spaced apart in the thickness direction.

[0024] The first side plate portion 33 forms one end face in the width direction of the main body portion 3. The first side plate portion 33 is connected to one edge in the width direction of the front plate portion 31 and one edge in the width direction of the rear plate portion 32. The second side plate portion 34 forms the other end face in the width direction of the main body portion 3. The second side plate portion 34 is connected to the other edge in the width direction of the front plate portion 31 and the other edge in the width direction of the rear plate portion 32. The first side plate portion 33 and the second side plate portion 34 are spaced apart in the width direction.

[0025] The first inner plate portion 35 extends from the middle of the front plate portion 31 in the width direction toward the other side in the thickness direction and gradually toward the other side in the width direction, and is connected to the middle of the rear plate portion 32 in the width direction. The second inner plate portion 36 is located at a position on the other side in the width direction from the first inner plate portion 35, and extends from the middle of the front plate portion 31 in the width direction toward the other side in the thickness direction and gradually toward the one side in the width direction, and is connected to the middle of the rear plate portion 32 in the width direction. The first hollow section 37 is a space surrounded by the front plate section 31, the rear plate section 32, the first side plate section 33, and the first inner plate section 35. The second hollow section 38 is a space surrounded by the front plate section 31, the rear plate section 32, the first inner plate section 35, and the second inner plate section 36. The third hollow section 39 is a space surrounded by the front plate section 31, the rear plate section 32, the second side plate section 34, and the second inner plate section 36. The first hollow section 37, the second hollow section 38, and the third hollow section 39 can be used as an air layer or as space for installing equipment.

[0026] The groove-forming portion 4 is provided along one edge in the width direction of the main body portion 3. The groove-forming portion 4 has a first groove-side plate portion 41 and a second groove-side plate portion 42. The first groove side plate portion 41 protrudes from one end in the thickness direction of the first side plate portion 33 to one side in the width direction. The surface 411 on one side in the thickness direction of the first groove side plate portion 41 is flush with the surface 311 on one side in the thickness direction of the front plate portion 31. The second groove side plate portion 42 protrudes from the other end in the thickness direction of the first side plate portion 33 to one side in the width direction. The surface 421 on the other side in the thickness direction of the second groove side plate portion 42 is flush with the surface 321 on the other side in the thickness direction of the rear plate portion 32. The protrusion dimensions of the first groove side plate portion 41 and the second groove side plate portion 42 from the first side plate portion 33 are the same. The groove forming portion 4 has a groove portion 43 formed throughout its entire height direction, surrounded by the first groove side plate portion 41, the second groove side plate portion 42, and the first side plate portion 33, and opening to one side in the width direction.

[0027] Structural member 1 is constructed by laminating cement-based material from bottom to top. The main body 3 and the groove-forming section 4 are formed integrally. Each layer forming structural member 1 is formed by extruding cement-based material in a linear manner so as to trace the horizontal cross-sectional shape of structural member 1.

[0028] When the structural members 1,1… are arranged, the groove-forming portion 4 of the structural member 1 located on one side in the width direction and the main body portion 3 of the structural member 1 located on the other side in the width direction face each other in the width direction. The tip portions 41a, 42a of the first groove side plate portion 41 and the second groove side plate portion 42 of the groove-forming portion 4 that face each other in the width direction come into contact with the second side plate portion 34.

[0029] Between adjacent structural members 1, 1 in the width direction, a cylindrical cavity 21 extending in the vertical direction is formed, surrounded by the first groove side plate portion 41, the second groove side plate portion 42, and the first side plate portion 33 of structural member 1 located on one side in the width direction, and the second side plate portion 34 of structural member 1 located on the other side in the width direction. As described above, the column 2 is constructed by the joining material 22 filled in the cylindrical cavity 21. Multiple main reinforcement bars 23 and multiple stirrups 24 are arranged in the cylindrical cavity 21.

[0030] The construction method for the wall section 11 (construction method for the structure) will be explained below. Structural component 1 is manufactured using additive manufacturing equipment (manufacturing process). A cement-based material is discharged from the nozzle of an additive manufacturing apparatus and layered from the bottom to the top to produce a structural member 1. A first hollow section 37, a second hollow section 38, and a third hollow section 39 are formed in the main body 3 of the structural member 1.

[0031] Multiple structural members 1,1... are arranged in the width direction (arrangement step). As shown in Figure 1, a plurality of structural members 1,1… are arranged along the wall surface of the wall portion 11. The main body portion 3 of a structural member 1 located on one side in the width direction of adjacent structural members 1,1 is placed opposite the groove-forming portion 4 of a structural member 1 located on the other side in the width direction. The second side plate portion 34 of the main body portion 3 of the structural member 1 located on one side in the width direction is brought into contact with the tip portions 41a, 42a of the first groove-side plate portion 41 and the second groove-side plate portion 42 of the groove-forming portion 4 of the structural member 1 located on the other side in the width direction. The groove portion 43 of the structural member 1 located on the other side in the width direction is closed by the second side plate portion 34 of the structural member 1 located on one side in the width direction. In this way, a cylindrical space 21 extending in the vertical direction is formed between adjacent structural members 1,1 in the width direction.

[0032] Join adjacent structural members 1,1 together (joining process). A column 2 is constructed inside the cylindrical cavity 21. Multiple main reinforcement bars 23 and multiple stirrups 24 are placed inside the cylindrical cavity 21. A bonding material 22 is filled into the cylindrical cavity 21 and allowed to harden. The bonding material 22 is anchored to the main reinforcement bars 23 and stirrups 24. The bonding material 22 is anchored to the second side plate portion 34 of one structural member 1 in the width direction, and to the first groove side plate portion 41, second groove side plate portion 42 and first side plate portion 33 of the structural member 1 on the other side in the width direction. As the bonding material 22 hardens, a column 2 is formed, and the adjacent structural members 1,1 in the width direction are joined together to construct a wall portion 11.

[0033] Next, the operation and effects of the construction method for structures according to this embodiment will be described. In the construction method of the structure according to this embodiment, adjacent structural members 1,1 can be easily joined together by filling the cylindrical cavity 21 formed between adjacent structural members 1,1 with a joining material 22 during the joining process. Since adjacent structural members 1,1 are joined by the joining material 22 filled in the cylindrical cavity 21 formed between them, the strength of the cross-sections of both members can be combined, ensuring structural performance, and the adjacent structural members 1,1 can be joined without gaps, ensuring watertightness and heat insulation performance at the joint.

[0034] Column 2 is provided with multiple main reinforcement bars 23 and multiple stirrups 24. This configuration improves the structural performance of the joint between column 2 and adjacent structural members 1,1.

[0035] In the construction method of the structure according to this embodiment, a first hollow section 37, a second hollow section 38, and a third hollow section 39 are formed in the main body 3 of the structural member 1 during the manufacturing process. With this configuration, an air layer and space for installing equipment (first hollow section 37, second hollow section 38, and third hollow section 39) can be easily formed in the main body 3 of the structural member 1.

[0036] In this embodiment, the groove 43 and second side plate 34 of the structural member 1 that forms the cylindrical cavity 21 serve as formwork for the column 2. The groove 43 and second side plate 34 are manufactured in the process of manufacturing the structural member 1 (manufacturing process) and installed in the process of arranging the structural member 1 (arrangement process). This reduces the labor involved in manufacturing and installing the formwork.

[0037] Next, other embodiments will be described. The same reference numerals will be used for components and parts identical or similar to those in the first embodiment described above, and their descriptions will be omitted. Configurations different from the first embodiment will be described. (Second Embodiment) As shown in Figure 3, the structural member 1B according to the second embodiment has a first groove forming portion 5 formed on one side in the width direction of the main body portion 3B, and a second groove forming portion 6 formed on the other side in the width direction. The main body portion 3B has a front plate portion 31B, a rear plate portion 32B, a first side plate portion 33B, and a second side plate portion 34. The main body portion 3B is not provided with a plate portion that partitions the space between the front plate portion 31B and the rear plate portion 32B, such as the first inner plate portion 35 and the second inner plate portion 36 in the first embodiment. The main body portion 3B has a single hollow portion 30 surrounded by the front plate portion 31B, the rear plate portion 32B, the first side plate portion 33B, and the second side plate portion 34B.

[0038] The first groove-forming section 5 has a first groove-side plate section 51 and a second groove-side plate section 52. The first groove-side plate section 51 protrudes from one end in the thickness direction of the first side plate section 33B to one side in the width direction. The second groove-side plate section 52 protrudes from the other end in the thickness direction of the first side plate section 33B to one side in the width direction. The first groove-forming section 5 has a first groove section 53 formed in it, surrounded by the first groove-side plate section 51, the second groove-side plate section 52, and the first side plate section 33B. The first groove section 53 opens to one side in the width direction and extends across the entire vertical direction of the structural member 1B.

[0039] The second groove-forming section 6 has a shape that is symmetrical to the first groove-forming section 5 in the width direction. The second groove-forming section 6 has a first groove side plate section 61 and a second groove side plate section 62. The first groove side plate section 61 protrudes from one end in the thickness direction of the second side plate section 34B to the other end in the width direction. The second groove side plate section 62 protrudes from the other end in the thickness direction of the second side plate section 34B to the other end in the width direction. The second groove-forming section 6 has a second groove section 63 formed in it, surrounded by the first groove side plate section 61, the second groove side plate section 62, and the second side plate section 34B. The second groove section 63 opens to the other end in the width direction and extends across the entire vertical direction of the structural member 1.

[0040] The first groove side plate portion 51 of the first groove forming portion 5 is integrally provided on one side in the width direction of the front plate portion 31B. The first groove side plate portion 61 of the second groove forming portion 6 is integrally provided on the other side in the width direction of the front plate portion 31B. The front plate portion 31B, the first groove side plate portion 51 and the first groove side plate portion 61 are in the form of a plate-like, hollow outer shell portion 71 formed by laminating cement-based material, with a heat insulating material 72 filled inside. The second groove side plate portion 52 of the first groove forming portion 5 is integrally provided on one side in the width direction of the rear plate portion 32B. The second groove side plate portion 62 of the second groove forming portion 6 is integrally provided on the other side in the width direction of the rear plate portion 32B. The rear plate portion 32B, the second groove side plate portion 52, and the second groove side plate portion 62 are plate-like structures formed by laminating cement-based materials. As shown in Figures 3 and 4, the thickness dimensions of the front plate portion 31B and the rear plate portion 32B may be set as appropriate.

[0041] When structural members 1B, 1B… are arranged, adjacent structural members 1B, 1B have their second groove forming portion 6 on one side in the width direction and their first groove forming portion 5 on the other side in the width direction facing each other in the width direction. The tip 51a of the first groove side plate portion 51 of the first groove forming portion 5 that faces each other in the width direction comes into contact with the tip 61a of the first groove side plate portion 61 of the second groove forming portion 6. The tip 52a of the second groove side plate portion 52 of the first groove forming portion 5 that faces each other in the width direction comes into contact with the tip 62a of the second groove side plate portion 62 of the second groove forming portion 6.

[0042] Between adjacent structural members 1B, 1B in the width direction, a cylindrical cavity 21B extending in the vertical direction is formed, surrounded by the first groove side plate portion 61, the second groove side plate portion 62, and the second side plate portion 34B of structural member 1B located on one side in the width direction, and the first groove side plate portion 51, the second groove side plate portion 52, and the first side plate portion 33B of structural member 1B located on the other side in the width direction. In the second embodiment as well, the column 2B is constructed by the joining material 22 filled in the cylindrical cavity 21B. Multiple main reinforcement bars 23 and multiple stirrups 24 are arranged in the cylindrical cavity 21B.

[0043] The construction method for the wall section 11 of the second embodiment will be described. Structural component 1B is manufactured using additive manufacturing equipment (manufacturing process). Multiple structural members 1B, 1B… are arranged in the width direction (arrangement step). The structural members 1B are arranged in the width direction so that the second groove forming portion 6 of the structural member 1B located on one side in the width direction and the first groove forming portion 5 of the structural member 1B located on the other side in the width direction face each other in the width direction. The tip portion 51a of the first groove side plate portion 51 of the first groove forming portion 5, which faces each other in the width direction, is brought into contact with the tip portion 61a of the first groove side plate portion 61 of the second groove forming portion 6. The tip portion 52a of the second groove side plate portion 52 of the first groove forming portion 5, which faces each other in the width direction, is brought into contact with the tip portion 62a of the second groove side plate portion 62 of the second groove forming portion 6. Between adjacent structural members 1B, 1B in the width direction, a cylindrical cavity 21B extending in the vertical direction is formed, surrounded by the first groove side plate portion 61, the second groove side plate portion 62, and the second side plate portion 34B of structural member 1B located on one side in the width direction, and the first groove side plate portion 51, the second groove side plate portion 52, and the first side plate portion 33B of structural member 1B located on the other side in the width direction.

[0044] Join adjacent structural members 1B, 1B together (joining process). A column 2B is constructed inside the cylindrical cavity 21B. Multiple main reinforcement bars 23 and multiple stirrups 24 are placed inside the cylindrical cavity 21B. A connecting material 22 is filled into the cylindrical cavity 21B and allowed to harden. The connecting material 22 is anchored to the main reinforcement bars 23 and stirrups 24. The connecting material 22 is anchored to adjacent structural members 1B, 1B. As the connecting material 22 hardens, the column 2B is formed, and adjacent structural members 1B, 1B in the width direction are joined together to construct the wall 11B. In the manufacturing process, the arrangement process, and the joining process, or after any of these processes, the insulation material 72 is filled into the interior of the outer shell 71 of the structural member 1B (insulation material installation process).

[0045] The construction method for the structure according to the second embodiment described above provides the same effects as the construction method for the structure according to the first embodiment. In the construction method of the structure according to the second embodiment, by providing groove forming sections along both side edges of the main body, a cylindrical cavity 21B can be formed by combining the interiors of the first groove 53 and the second groove 63 of adjacent structural members 1B, 1B. By making the structural members 1B symmetrical in the width direction, the arrangement of the structural members 1B in the arrangement process becomes easier.

[0046] (Third embodiment) As shown in Figure 5, the structural member 1C according to the third embodiment has a first groove forming portion 5C formed on one side in the width direction of the plate-shaped main body portion 3C, and a second groove forming portion 6C formed on the other side in the width direction. The structural member 1C has an outer shell portion 81 and an insulating material 82. The outer shell portion 81 is provided on the outer periphery of the structural member 1C. The outer shell portion 81 is formed by laminating cement-based material using an additive manufacturing apparatus. The insulating material 82 fills the entire interior of the outer shell portion 81.

[0047] The outer shell portion 81 has a front plate portion 811, a rear plate portion 812, a first side plate portion 813, and a second side plate portion 814. The front plate portion 811 is provided along one side surface of the structural member 1C in the thickness direction. The rear plate portion 812 is provided along the other side surface of the structural member 1C in the thickness direction. The front plate portion 811 and the rear plate portion 812 are flat plates, with their surfaces facing the thickness direction. The first side plate portion 813 is provided along one side surface of the structural member 1C in the width direction. The second side plate portion 814 is provided along the other side surface of the structural member 1C in the width direction.

[0048] One end of the first side plate portion 813 in the thickness direction is connected to one end of the front plate portion 811 in the width direction. The other end of the first side plate portion 813 in the thickness direction is connected to one end of the rear plate portion 812 in the width direction. A first groove portion 813a is formed in the middle of the first side plate portion 813 in the thickness direction, recessed to the other side in the width direction. One end of the second side plate portion 814 in the thickness direction is connected to the other end of the front plate portion 811 in the width direction. The other end of the second side plate portion 814 in the thickness direction is connected to the other end of the rear plate portion 812 in the width direction. A second groove portion 814a is formed in the middle of the second side plate portion 814 in the thickness direction, recessed to one side in the width direction.

[0049] In the structural member 1C, the portion at one end in the width direction where the first groove 813a is formed corresponds to the first groove forming portion 5C. In the structural member 1C, the portion at the other end in the width direction where the second groove 814a is formed corresponds to the second groove forming portion 6C. In the middle of the structural member 1C in the width direction, the portion between the first side plate portion 813 and the second side plate portion 814 corresponds to the main body portion 3C.

[0050] When structural members 1C, 1C… are arranged, adjacent structural members 1C, 1C have their second groove-forming portion 6C on one side in the width direction and their first groove-forming portion 5C on the other side in the width direction facing each other in the width direction. The end portion 814b on one side in the thickness direction of the second side plate portion 814 of the structural member 1C that faces each other in the width direction and the end portion 813b on one side in the thickness direction of the first side plate portion 813 come into contact. The end portion 814c on the other side in the thickness direction of the second side plate portion 814 of the structural member 1C that faces each other in the width direction and the end portion 813c on the other side in the thickness direction of the first side plate portion 813 come into contact.

[0051] Between adjacent structural members 1C, 1C in the width direction, a vertically extending cylindrical cavity 21C is formed, surrounded by a second side plate portion 814 of structural member 1C located on one side in the width direction and a first side plate portion 813 of structural member 1C located on the other side in the width direction. In the third embodiment as well, the column 2C is constructed by a joining material 22 filled into the cylindrical cavity 21C. Multiple main reinforcement bars 23 and multiple stirrups 24 are arranged in the cylindrical cavity 21C.

[0052] The construction method for the wall section 11C of the third embodiment will be described. Structural component 1C is manufactured using additive manufacturing equipment (manufacturing process). Multiple structural members 1C, 1C... are arranged in the width direction (arrangement process). The structural members 1C are arranged in the width direction, and the second groove forming portion 6C of the structural member 1C located on one side in the width direction and the first groove forming portion 5C of the structural member 1C located on the other side in the width direction are made to face each other in the width direction. The second side plate portion 814 of the structural member 1C located on one side in the width direction and the first side plate portion 813 of the structural member 1C located on the other side in the width direction are made to be in contact. A cylindrical cavity portion 21C extending in the vertical direction is formed between the second side plate portion 814 and the first side plate portion 813 of adjacent structural members 1C, 1C in the width direction, where the first groove portion 813a and the second groove portion 814a are joined together. In the manufacturing process, the arrangement process, and the joining process, or after any of these processes, the thermal insulation material 82 is filled into the interior of the outer shell 81 of the structural member 1C (thermal insulation material installation process).

[0053] Joining adjacent structural members 1C, 1C (joining process). A column 2C is constructed inside the cylindrical cavity 21C. Multiple main reinforcement bars 23 and multiple stirrups 24 are placed inside the cylindrical cavity 21C. A connecting material 22 is filled into the cylindrical cavity 21C and allowed to harden. The connecting material 22 is anchored to the main reinforcement bars 23 and stirrups 24. The connecting material 22 is anchored to adjacent structural members 1C, 1C. As the connecting material 22 hardens, the column 2C is formed, and adjacent structural members 1C, 1C in the width direction are joined together to construct the wall section 11C.

[0054] The construction method for the structure according to the third embodiment described above provides the same effects as the construction methods for the structure according to the first and second embodiments. In the construction method of the structure according to the third embodiment, the structural member 1C is configured such that the entire interior of the outer shell portion 81 is filled with thermal insulation material 82, thereby improving the thermal insulation performance of the constructed wall portion 11.

[0055] (Fourth Embodiment) As shown in Figure 6, the structural member 1D according to the fourth embodiment is a form in which the thickness dimension of the main body portion 3C of the structural member 1C according to the third embodiment is reduced. The structural member 1D has an outer shell portion 81D and an insulating material 82D, similar to the structural member 1C according to the third embodiment. The outer shell portion 81D is provided on the outer periphery of the structural member 1D. The outer shell portion 81D is formed by laminating cement-based material using an additive manufacturing apparatus. The insulating material 82D fills the entire interior of the outer shell portion 81D.

[0056] The outer shell portion 81D includes a front plate portion 811, a rear plate portion 812D, a first side plate portion 813, and a second side plate portion 814. The front plate portion 811, the first side plate portion 813, and the second side plate portion 814 have the same shape as the front plate portion 811, the first side plate portion 813, and the second side plate portion 814 of the outer shell portion 81 of structural member 1C according to the third embodiment. That is, the front plate portion 811 is flat. A first groove portion 813a is formed in the first side plate portion 813. A second groove portion 814a is formed in the second side plate portion 814. The rear plate portion 812D has a recessed portion 812a formed in the middle of the width direction, which is recessed on one side in the thickness direction.

[0057] The portion of the structural member 1D at one end in the width direction where the first groove 813a is formed corresponds to the first groove forming portion 5D. The portion of the structural member 1D at the other end in the width direction where the second groove 814a is formed corresponds to the second groove forming portion 6D. The portion of the structural member 1D in the middle in the width direction between the first side plate portion 813 and the second side plate portion 814 corresponds to the main body portion 3D. The main body portion 3D is the portion of the structural member 1D where the recess 812a is formed.

[0058] When structural members 1D, 1D… are arranged, adjacent structural members 1D, 1D have their second groove-forming portion 6D on one side in the width direction and their first groove-forming portion 5D on the other side in the width direction facing each other in the width direction. The end portion 814b on one side in the thickness direction of the second side plate portion 814 of the structural member 1D facing each other in the width direction and the end portion 813b on one side in the thickness direction of the first side plate portion 813 come into contact. The end portion 814c on the other side in the thickness direction of the second side plate portion 814 of the structural member 1D facing each other in the width direction and the end portion 813c on the other side in the thickness direction of the first side plate portion 813 come into contact.

[0059] Between adjacent structural members 1D, 1D in the width direction, a vertically extending cylindrical cavity 21D is formed, surrounded by the second side plate portion 814 of structural member 1D located on one side in the width direction and the first side plate portion 813 of structural member 1C located on the other side in the width direction. In the fourth embodiment as well, the column 2D is constructed by the joining material 22 filled in the cylindrical cavity 21D. Multiple main reinforcement bars 23 and multiple stirrups 24 are arranged in the cylindrical cavity 21D.

[0060] The construction method for the wall section 11D of the fourth embodiment will be described. Structural component 1D is manufactured using additive manufacturing equipment (manufacturing process). Multiple structural members 1D, 1D… are arranged in the width direction (arrangement process). The structural members 1D are arranged in the width direction, and the second groove forming portion 6D of the structural member 1D located on one side in the width direction and the first groove forming portion 5D of the structural member 1D located on the other side in the width direction are made to face each other in the width direction. The second side plate portion 814 of the structural member 1D located on one side in the width direction and the first side plate portion 813 of the structural member 1D located on the other side in the width direction are made to be in contact. A cylindrical cavity portion 21D extending in the vertical direction is formed between the second side plate portion 814 and the first side plate portion 813 of adjacent structural members 1D, 1D, where the first groove portion 813a and the second groove portion 814a are joined together. In the manufacturing process, the arrangement process, and the joining process, or after any of these processes, the insulation material 82D is filled into the interior of the outer shell 81D of the structural member 1D (insulation material installation process).

[0061] Joining adjacent structural members 1D, 1D (joining process). A column 2D is constructed inside the cylindrical cavity 21D. Multiple main reinforcement bars 23 and multiple stirrups 24 are placed inside the cylindrical cavity 21D. A connecting material 22 is filled into the cylindrical cavity 21D and allowed to harden. The connecting material 22 is anchored to the main reinforcement bars 23 and stirrups 24. The connecting material 22 is anchored to adjacent structural members 1D, 1D. As the connecting material 22 hardens, the column 2D is formed, and adjacent structural members 1D, 1D in the width direction are joined together to construct the wall 11D.

[0062] The construction method for the structure according to the fourth embodiment described above provides the same effects as the construction methods for the structure according to the first to third embodiments. In the construction method of the structure according to the fourth embodiment, the width dimension of the main body 3D, i.e., the thickness dimension, is small, so the space on one side of the width dimension of the main body 3D can be effectively utilized.

[0063] Although embodiments of the construction method for structures according to the present invention have been described above, the present invention is not limited to the above embodiments and can be modified as appropriate without departing from the spirit of the invention. For example, in the above embodiment, the structural members 1, 1B-1D are flat, but they may also be curved in shape to construct a curved wall portion 11E (structure) such as the structural member 1E shown in Figure 7. In Figure 7, the column provided between adjacent structural members 1E, 1E is indicated by reference numeral 2E, and the cylindrical cavity is indicated by reference numeral 21E. Adjacent structural members 1,1B-1D may have different shapes from each other. In the above embodiment, structural members 1, 1B-1D are arranged in the width direction and adjacent structural members in the width direction are joined together, but they may also be arranged in the vertical direction and adjacent structural members in the vertical direction are joined together.

[0064] Structural members 1,1B-1D may also construct structures other than the wall section 11. Columns 2,2B-2D do not need to have main reinforcement bars 23 and stirrups 24. The materials used to construct the structural members 1,1B-1D and the joining material 22 used to fill the cylindrical cavity 21 may be materials other than cement-based materials. The joining material 22,22B-22D that fills the cylindrical cavity 21 and the material used to construct the structural members 1,1B-1D may be the same material or different materials. In the manufacturing process, structural members 1,1B-1D may be produced by spraying materials such as cement-based materials.

[0065] The joining material 22 may be a fiber-reinforced cement-based material with added short fibers (for example, ultra-high-strength fiber-reinforced concrete). Because these materials have high strength and high flexural strength, joining with these materials makes it possible to omit the main reinforcement bars 23 and stirrups 24.

[0066] As shown in Figure 8, structural members 1F, 1F may be arranged to form corners along the corners of the wall portion 11F, and adjacent structural members 1F, 1F may be joined together to form corners. The groove portion 43F formed in the groove forming portion 4F of at least one of the structural members 1F that are joined together may be a groove portion 43F that opens in the thickness direction of the structural member 1F, for example, as long as the opening can be closed by the other structural member 1F to form a cylindrical cavity 21F. In Figure 8, a column is indicated by reference numeral 2F.

[0067] In the groove-forming portion of structural member 1,1B-1D, a main reinforcement support portion 44 (first reinforcement support portion) may be formed in the groove portion 43G, as shown in the groove-forming portion 4G of structural member 1G in Figure 9, to support the main reinforcement 23. The main reinforcement support portion 44 is, for example, a hole that extends in the same direction as the groove portion 43G into which the main reinforcement 23 is inserted. The main reinforcement support portion 44 may be a recess or other shape that can support the main reinforcement 23. The main reinforcement support portion 44 may be formed during the manufacturing process of structural member 1,1B-1D.

[0068] The Sustainable Development Goals (SDGs) are among the 17 international goals adopted at the UN Summit in September 2015. The construction method for structures according to this embodiment can contribute to achieving goals such as "Goal 9: Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation," among the 17 Sustainable Development Goals (SDGs). [Explanation of Symbols]

[0069] 1,1B-1G Structural Member 2,2B-2F pillar 3,3B-3D Main body 4,4F,4G groove forming part 5,5C,5D First groove forming part (groove forming part) 6,6C,6C 2nd groove forming part (groove forming part) 11,11B-11F Wall section 21, 21B-21F Cylindrical cavity 22 Bonding material 23 Main reinforcement 24. Muscles of the waist 30 Hollow part 37 1st hollow part 38 Second hollow part 39 Third hollow part 43,43E,43G Groove 44 Main reinforcement support section (first reinforcement support section) 53,813a First groove 63,814a Second groove 72,82,82D insulation

Claims

1. A manufacturing process in which structural members are manufactured using additive manufacturing equipment, The process of arranging the structural members, The process includes a joining step for joining the structural members together, At least one of the adjacent structural members is The main body and It has a groove-forming portion which is provided along the edge of the main body portion and has a groove portion which extends along the edge of the main body portion, In the aforementioned array step, A cylindrical cavity is formed between adjacent structural members, closing the opening of the groove. A construction method for a structure in which a joining material is filled into the cylindrical cavity during the joining process.

2. The method for constructing a structure according to claim 1, wherein the cylindrical cavity is provided with a first reinforcing bar extending in the same direction as the groove.

3. The construction method for a structure according to claim 2, wherein a second reinforcing bar surrounding the first reinforcing bar is provided in the cylindrical cavity.

4. The method for constructing a structure according to claim 2, wherein in the manufacturing process, a first reinforcing bar support portion for supporting the first reinforcing bar is formed in the groove forming portion.

5. The method for constructing a structure according to claim 1, wherein the groove forming portion is provided along each of the side edges of the main body portion in the manufacturing process.

6. The method for constructing a structure according to claim 1, wherein a hollow portion is formed in the main body during the manufacturing process.

7. A method for constructing a structure according to claim 1, further comprising a step of installing thermal insulation material inside the structural member.

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