Connection structure, structure, and construction method of structure

Abstract

To provide a connection structure having improved workability, a structure having the connection structure, and a construction method of the structure.SOLUTION: A wooden structural member 11 includes a wooden core material 21, a fireproof material 22 on the outside of the wooden core material 21, and a wooden structural member finishing material 23 on the outside of the fireproof material 22. A PC structural member 12 has a PC core material 31 and a PC structural member finishing material 32 outside the PC core material 31. At the connection portion between the wooden structural member 11 and the PC structural member 12, a cement-based filler 45 is formed between a wooden core material end surface 24, which is the end surface of the wooden core material 21 and a PC core material end surface 34, which is the end surface of the PC core material 31. A joint space 41 is formed between a wooden structural member finishing end surface 30 which is the end surface of the wooden structural member finishing material 23 and a PC structural member finishing end surface 40 which is the end surface of the PC structural member finishing material 32.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a connection structure, a structure having the connection structure, and a method for constructing the structure. [Background technology]

[0002] For example, in a structure using wooden structural members as pillars and beams, a connection structure is known in which pillars and beams are connected via joint members, as in Patent Document 1. In Patent Document 1, the pillars are connected to the joint members via connecting steel members, which are H-shaped steel members with base plates at both ends. The beams are connected to the joint members via metal fittings with a T-shaped cross section fixed to the joint members. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-002641 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the connection structure described in Patent Document 1, for column members, it is necessary to connect the base plate of the connecting steel member to the joint member and the column member by screw connection. On the other hand, for beam members, it is necessary to connect the metal base plate to the joint member by screw connection, insert a metal gusset plate into a groove formed in the beam member, and then connect the gusset plate to the beam member using a connector such as a drift pin. Due to the necessity of such work, it cannot be said that the workability is high. [Means for solving the problem]

[0005] A connection structure that solves the above-mentioned problems is a connection structure that connects a wooden structural member and a PC structural member that constitutes a joint of the wooden structural member, wherein the wooden structural member has a wooden core material, a fire-resistant material on the outside of the wooden core material, and a wooden structural member finishing material on the outside of the fire-resistant material, and the PC structural member has a PC core material and has a cement-based filler between the wooden core material end face, which is the end face of the wooden core material, and the PC core material end face, which is the end face of the PC core material, and has a joint space between the wooden structural member finishing end face, which is the end face of the wooden structural member finishing material, and the PC structural member end face, which is the end face of the PC structural member.

[0006] The structure that solves the above problem has the above-mentioned connection structure. A construction method for a structure that solves the above-mentioned problems is a construction method for a structure constructed by connecting wooden structural members to PC structural members that constitute the joints of the wooden structural members, wherein the wooden structural members have a wooden core material, a fire-resistant material on the outside of the wooden core material, and a wooden structural member finishing material on the outside of the fire-resistant material, and the PC structural members have a PC core material, and the wooden structural members and the PC structural members are arranged so that a joint space is formed between the wooden structural member finishing end face, which is the end face of the wooden structural member finishing material, and the PC structural member end face, which is the end face of the PC structural member, and a cement-based filler is injected between the wooden core member end face, which is the end face of the wooden core material, and the PC core member end face, which is the end face of the PC core material, and allowed to harden, thereby connecting the wooden structural members and the PC structural members.

[0007] According to the above-mentioned connection structure, structure, and construction method for a structure, it is possible to improve the workability of the connection structure between a wooden structural member and a PC structural member. In the above connection structure, it is preferable that the PC structural member has a PC structural member finishing material on the outside of the PC core material, and the joint space is provided between the finished end face of the wooden structural member and the finished end face of the PC structural member, which is the end face of the PC structural member finishing material. This can improve the workability of the connection structure between the wooden structural member and the PC structural member having the PC structural member finishing material.

[0008] The above-mentioned connection structure preferably has a fire-resistant filler between the cement-based filler and the joint space, thereby improving the fire resistance of the connection between the wooden structural member and the PC structural member.

[0009] In the above connection structure, the fireproof filler is preferably provided between the end face of the PC core material and the end face of the fireproof material, thereby further improving the fire resistance of the connection part between the wooden structural member and the PC structural member.

[0010] The above-mentioned connection structure preferably has a fireproof seal between the fireproof filler and the joint space, which can further improve the fire resistance of the connection between the wooden structural member and the PC structural member. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is an oblique view showing the general configuration of one embodiment of a structure, and is a schematic diagram showing part of the process of connecting a new wooden structural member and a PC structural member to a portion where a wooden structural member and a PC structural member are connected. [Diagram 2] 1 is a cross-sectional view showing a schematic configuration of one embodiment of a connecting structure, and is a partial cross-sectional view showing a connecting portion between a wooden structural member and a PC structural member. [Diagram 3] FIG. 13 is a perspective view showing an example of a process for connecting a PC structural member to a wooden structural member. [Figure 4] FIG. 4 is a perspective view showing an example of a state in which a first rod-shaped material is inserted. [Diagram 5] FIG. 13 is a perspective view showing a schematic example of a process for connecting a wooden structural member to a PC structural member. [Figure 6] FIG. 13 is a perspective view showing an example of a process for connecting a PC structural member to a wooden structural member. [Figure 7] FIG. 4 is a perspective view showing an example of a state in which a first rod-shaped material is inserted. [Figure 8] FIG. 13 is a perspective view showing a schematic example of a process for connecting a wooden structural member to a PC structural member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An embodiment of a connection structure, a structure including the connection structure, and a method for constructing the structure will be described with reference to Figs. 1 to 8. As shown in Fig. 1, a structure 10 is constructed by sequentially connecting wooden structural members 11 that function as columns or beams and PC structural members 12 that form joints. The PC structural members 12 are made of precast concrete.

[0013] The wooden structural members 11 functioning as pillars are connected to the PC structural members 12 via a plurality of first rods 13. The wooden structural members 11 functioning as beams are connected to the PC structural members 12 via a plurality of second rods 14. The wooden structural members 11 have wood-side connection holes 15 in which the first rods 13 or second rods 14 are arranged. The PC structural members 12 have joint-side connection holes 16 in which the first rods 13 are arranged. The second rods 14 are fixed to the PC structural members 12.

[0014] As shown in FIG. 2, the wooden structural member 11 has a wooden core material 21, a fireproof material 22, and a wooden structural member finishing material . The wooden core material 21 is a rectangular prism-shaped piece of wood that has sufficient strength against the load acting on the wooden structural member 11. A concave wood-side cotter 25 is formed in the center of a wooden core material end face 24, which is an end face of the wooden core material 21. The above-mentioned multiple wood-side connection holes 15 are opened in the wooden core material end face 24. The multiple wood-side connection holes 15 may be opened at positions surrounding the wood-side cotter 25, or may be opened in the wood-side cotter 25. Each wood-side connection hole 15 extends along the longitudinal axis of the wooden core material 21. The wood-side connection hole 15 has a shape that forms a gap of the order of millimeters between the first bar 13 or the second bar 14.

[0015] The fireproof material 22 covers the wooden core material 21 from the outside and is provided so as to protrude from the outer edge of the wooden core material end surface 24 at the end of the wooden structural member 11. In this embodiment, the fireproof material 22 is composed of three fireproof layers 26. Each fireproof layer 26 is composed of a plurality of board materials that are lightweight and have excellent fire resistance, such as gypsum board. Each board material is fixed to the wooden core material 21 and the inner board material by fasteners such as staples not shown. The joints 27 of the board materials in each fireproof layer 26 are provided at positions that do not overlap with the joints 27 of other fireproof layers 26 located on the inside or outside. This makes the wooden core material 21 less susceptible to the effect of heat in the event of a fire, thereby improving the fire resistance of the wooden structural member 11. The fireproof material end surface 28, which is the end surface of the fireproof material 22, is configured so that the end surfaces of each fireproof layer 26 are flush with each other. The fireproof material end face 28 is disposed closer to the PC structural member 12 than the wooden core material end face 24 .

[0016] The wooden structural member finishing material 23 covers the fire-resistant material 22 from the outside. A wooden structural member finished end face 30, which is an end face of the wooden structural member finishing material 23, is disposed in a position flush with the fire-resistant material end face 28. The wooden structural member finishing material 23 gives the wooden structural member 11 a wood-like appearance and also functions as a substitute layer in the event of a fire. The wooden structural member finishing material 23 is fixed to the fire-resistant material 22 with screws (not shown) or the like.

[0017] The PC structural member 12 has a PC core material 31 and a PC structural member finishing material 32. The PC core material 31 has a core material body 33 having a substantially rectangular parallelepiped shape. The core material body 33 has a connection surface 34 to which the wooden structural member 11 is connected and a non-connection surface 35 to which the wooden structural member 11 is not connected.

[0018] The connection surface 34 to which the wooden structural member 11 functioning as a pillar is connected is the upper or lower surface of the PC core material 31. A joint-side connection hole 16 in which the first rod 13 is disposed is opened in the connection surface 34. The connection surface 34 to which the wooden structural member 11 functioning as a beam is connected is the side surface of the PC core material 31. The second rod 14 extends outward from the connection surface 34. Each connection surface 34 is disposed opposite the wooden core material end surface 24 and the fireproof material end surface 28 of the wooden structural member 11 functioning as a pillar.

[0019] A concave joint-side cotter 36 is formed in the center of each connection surface 34. The joint-side cotter 36 is disposed opposite the wood-side cotter 25 of the wooden structural member 11. The joint-side connection hole 16 may open to the area surrounding the joint-side cotter 36, or may open to the area where the joint-side cotter 36 is formed. The second rod 14 may extend from the area surrounding the joint-side cotter 36, or may extend from the area where the joint-side cotter 36 is formed. The PC core 31 is formed so that the joint-side connection hole 16 and the second rod 14 do not intersect inside the core body 33.

[0020] The rods 13, 14 may be made of materials stronger than the wooden core material 21 of the wooden structural member 11, such as deformed rebars, fully threaded bolts, or fiberglass bars. The lengths of the rods 13, 14 are determined so that, when inserted to the deepest part of the wood-side connection hole 15, an inner space 37, which is a gap of about 10 mm, can be formed between the connection surface 34 and the end surface 28 of the fireproof material.

[0021] The non-connecting surface 35 is a surface that becomes a side surface of the PC core material 31 and is a surface to which the PC structural member finishing material 32 is attached. A finishing material recess 38 is formed in the center of the non-connecting surface 35. A plurality of plate materials 39 are arranged in the finishing material recess 38. The plate materials 39 are fixed to the PC core material 31 or the plate materials 39 located on the inside by screws (not shown). The plate material 39 in contact with the PC core material 31 is wood that adjusts the position of the outer surface of the PC structural member finishing material 32 so that the outer surface of the PC structural member finishing material 32 and the outer surface of the wooden structural member finishing material 23 are flush with each other. The plate material 39 in contact with the PC structural member finishing material 32 is wood to which the PC structural member finishing material 32 is fixed. The PC structural member finishing material 32 is fixed to the plate material 39 in contact with the PC structural member finishing material 32 by screws (not shown). The PC structural member finishing material 32 covers the entire non-connecting surface 35. The PC structural member finishing material 32 gives the PC structural member 12 a wood-like appearance. In this embodiment, the PC structural member finished end face 40, which is the end face of the PC structural member finishing material 32, is a PC structural member end face. The gap between the PC structural member finished end face 40 and the wooden structural member finished end face 30 is a joint space 41. Note that the PC structural member 12 may have a configuration in which the non-connecting surface 35 is flat and the PC structural member finishing material 32 is fixed to the non-connecting surface 35.

[0022] The wooden core 21 of the wooden structural member 11 and the PC core 31 of the PC structural member 12 are connected by a cement-based filler 45 disposed between the connection surface 34 and the wooden core end surface 24. The cement-based filler 45 is formed by hardening cement (such as mortar) that is injected to cover the periphery of the first rod 13 or the second rod 14 and to fill the wood-side cotter 25 and the joint-side cotter 36. The formation of these cotters 25, 36 increases the strength of the connection portion.

[0023] In the inner space 37 between the connection surface 34 and the end surface 28 of the fireproof material, a fireproof filler 46 is disposed so as to cover the cement-based filler 45 from the outside. The fireproof filler 46 is made of, for example, rock wool or a fireproof sheet. In the inner space 37, a backup material 47 is disposed so as to cover the fireproof filler 46 from the outside, and a fireproof seal 48 is disposed so as to cover the backup material 47 from the outside. The fireproof seal 48 is disposed between the fireproof filler 46 and the joint space 41. Each member disposed in the inner space 37 is made of a deformable material having excellent fire resistance. Each member suppresses the thermal effect on the wooden core material 21 through the joint space 41 and the inner space 37 during a fire, and functions as a buffer between the wooden structural member 11 and the PC structural member 12 during an earthquake or the like. In addition, an elastic member such as rubber may be arranged in the joint space 41 to prevent the fireproof filling material 46, the fireproof seal 48, etc. from coming out of the inner space 37.

[0024] (Structural construction method) The structure 10 is constructed by sequentially connecting wooden structural members 11, which function as pillars or beams, via PC structural members 12. The wooden structural members 11 are delivered to the construction site in a factory or the like with fireproofing material 22 and wooden structural member finishing material 23 attached to the wooden core material 21. The PC structural members 12 are delivered to the construction site with PC structural member finishing material 32 attached to the PC core material 31.

[0025] As shown in Fig. 3, first, a plurality of wooden structural members 11 that function as pillars are installed at predetermined installation positions on the foundation of the structure 10. Next, among the wooden structural members 11, a PC structural member 12a is connected to a wooden structural member 11a that serves as a reference.

[0026] When connecting the wooden structural member 11a and the PC structural member 12a, the wooden structural member 11a is aligned so that the joint-side connection hole 16 and the wood-side connection hole 15 communicate with each other above the wooden structural member 11a (alignment step), and then the first rod 13 is inserted from above into the joint-side connection hole 16 and the wood-side connection hole 15 (rod insertion step).Then, the PC structural member 12a is positioned so that the inner space 37 and the joint space 41 are formed (joint space formation step).

[0027] 4, cement is injected between the wooden core end surface 24 and the connection surface 34 of the PC core material 31 through the inner space 37 and the joint space 41 as indicated by the arrows, and hardened to form the cement-based filler 45 (cement-based filler forming process). At this time, part of the cement flows into the wood-side connection hole 15 and the joint-side connection hole 16 and hardens.

[0028] After forming the cement-based filler 45, rock wool, a fireproof sheet, or the like is placed in the inner space 37 to form a fireproof filler 46 so as to cover the cement-based filler 45 (fireproof filler forming process). Then, a backup material 47 is placed so as to cover the fireproof filler 46, and a fireproof seal 48 is formed so as to cover the backup material 47 from the outside (fireproof seal forming process). In this way, the wooden structural member 11a and the PC structural member 12a are connected.

[0029] Next, as shown in FIG. 5, a wooden structural member 11d that functions as a beam is connected to the PC structural member 12a. In this case, the second rod 14 of the PC structural member 12a is aligned with the wood-side connection hole 15 of the wooden structural member 11d (alignment step). Then, the wooden structural member 11d is brought close to the PC structural member 12a and the second rod 14 is inserted into the wood-side connection hole 15 (rod insertion step). In the cement-based filler forming step, the wooden structural member 11d is arranged so that an inner space 37 and a joint space 41 are formed, and cement is injected through the inner space 37 and the joint space 41 between the end surface 24 of the wooden core material and the connection surface 34 of the PC core material 31 and hardened. At this time, a part of the cement flows into the wood-side connection hole 15 of the wooden structural member 11d and hardens. Then, the wooden structural member 11d is connected to the PC structural member 12a through the fireproof filler forming step and the fireproof seal forming step.

[0030] Next, the wooden structural member 11e, which functions as a pillar, is connected to the PC structural member 12a. In this case, in the positioning step, the first rod 13 protruding from the PC structural member 12a is aligned with the wood-side connection hole 15. In the rod insertion step, the wooden structural member 11e is brought close to the PC structural member 12a and the first rod 13 is inserted into the wood-side connection hole 15. When the tip of the first rod 13 reaches the innermost part of the wood-side connection hole 15, the wooden structural member 11e is placed at a position where the inner space 37 and the joint space 41 are formed. Then, through the cement-based filler forming step, the fireproof filler forming step, and the fireproof seal forming step, the wooden structural member 11e is connected to the PC structural member 12a.

[0031] As shown in Figure 6, when connecting a PC structural member 12b to wooden structural member 11b and wooden structural member 11d, first, an alignment process is performed between wooden structural member 11d and PC structural member 12b, and then a second rod-shaped member 14 is inserted into the wood side connection hole 15 of wooden structural member 11d.

[0032] Next, as shown in Figure 7, after performing an alignment process between the wooden structural member 11b and the PC structural member 12b, a first rod-shaped member 13 is inserted into the joint side connection hole 16 of the PC structural member 12b and the wood side connection hole 15 of the wooden structural member 11b.

[0033] Then, after the PC structural member 12b is arranged so that an inner space 37 and a joint space 41 are formed between each of the wooden structural members 11b, 11d, a cement-based filler forming process is performed for each of the wooden structural members 11b, 11d. After the cement-based filler forming process, a fireproof filler forming process and a fireproof seal forming process are performed for each of the wooden structural members 11b, 11d, thereby connecting the PC structural member 12b to the wooden structural members 11b, 11d.

[0034] As shown in FIG. 8, wooden structural members 11f and 11g are connected to a PC structural member 12b through the various steps described above. Thereafter, the wooden structural members 11 and the PC structural members 12 are successively connected in this manner to construct the structure 10.

[0035] The effects of this embodiment will be described. (1) In the above-described connection structure, the cement-based filler 45 can be formed in communication with the inner space 37 and the joint space 41 formed between the wooden structural member 11 and the PC structural member 12. This can improve the workability of the connection structure between the wooden structural member 11 and the PC structural member 12.

[0036] (2) The fireproof filler 46 is disposed in the inner space 37 between the cement-based filler 45 and the joint space 41. This makes it difficult for the wooden core material 21 to be affected by heat through the inner space 37 during a fire. As a result, the fireproof performance of the connection between the wooden structural member 11 and the PC structural member 12 can be more reliably ensured.

[0037] (3) The fireproof filler 46 is disposed in the inner space 37 between the fireproof end surface 28 of the wooden structural member 11 and the connection surface 34 of the PC structural member 12. This effectively reduces the thermal impact on the wooden core material 21 in the event of a fire. As a result, the fireproof performance of the connection portion can be improved.

[0038] (4) A fire-resistant seal 48 is provided between the fire-resistant filler 46 and the joint space 41. This makes it possible to more effectively suppress the thermal effects on the wooden core material 21 during a fire. As a result, the fire resistance of the joint can be further improved.

[0039] (5) The fireproof end face 28 is disposed closer to the PC structural member 12 than the wooden core end face 24. This allows the wooden core end face 24 to be disposed in a more recessed location, further improving the fire resistance of the joint. In addition, the amount of materials, such as rock wool and fireproof sheets, required to form the fireproof filler 46 can be reduced.

[0040] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction. Either the fireproof filler 46 or the fireproof seal 48 may be disposed between the cement-based filler 45 and the joint space 41. In addition, it is not necessary to dispose both the fireproof filler 46 and the fireproof seal 48.

[0041] The fireproof filler 46 may be disposed not only in the inner space 37 but also in the joint space 41 . The wooden structural member 11 may be attached to the fireproof material 22 of the wooden core material 21, and the wooden structural member finishing material 23 may be attached to the fireproof material 22 at the construction site. In such a configuration, it is preferable that an injection hole for injecting cement is formed in the wooden core material 21. The injection hole communicates with the wood-side connection hole 15 at the innermost part. This makes it possible to more reliably inject cement around the rods 13, 14 in the wood-side connection hole 15.

[0042] The PC structural member 12 may be constructed by assembling the PC structural member finishing material 32 to the PC core material 31 at the construction site. The wood-side cotter 25 and the joint-side cotter 36 may have either a concave or convex shape as long as they make the wooden core end surface 24 an uneven surface.

[0043] The connection structure may be applied only to the connection part between the wooden structural member 11 functioning as a pillar and the PC structural member 12, or may be applied only to the connection part between the wooden structural member 11 functioning as a beam and the PC structural member 12.

[0044] The PC structural member 12 does not have to have the PC structural member finishing material 32. In this case, the non-connecting surface 35 of the PC core material 31 may be flat. The connecting surface 34 functions as the end surface of the PC structural member. The wooden structural member finishing end surface 30 is disposed opposite the connecting surface 34, so that a joint space is formed between the wooden structural member finishing end surface 30 and the connecting surface 34. [Explanation of symbols]

[0045] 10...Structure, 11, 11a, 11b, 11d, 11e, 11f, 11g...Wooden structural member, 12, 12a, 12b...PC structural member, 13...First rod-shaped member, 14...Second rod-shaped member, 15...Wood side connection hole, 16...Joint side connection hole, 21...Wooden core material, 22...Fireproof material, 23...Wooden structural member finishing material, 24...Wooden core material end surface, 25...Wood side cotter, 26...Fireproof layer, 27...Joint, 28...Fireproof Fire material end face, 30...finished end face of wooden structural member, 31...PC core material, 32...PC structural member finishing material, 33...core material body, 34...connecting surface, 35...non-connecting surface, 36...joint side cotter, 37...inner space, 38...finishing material recess, 39...board material, 40...finished end face of PC structural member, 41...joint space, 45...cementitious filler, 46...fire-resistant filler, 47...back-up material, 48...fire-resistant seal.

Claims

1. A connection structure for connecting a wooden structural member and a PC structural member that constitutes a joint of the wooden structural member, The wooden structural member has a wooden core material, a fireproof material on the outside of the wooden core material, and a wooden structural member finishing material on the outside of the fireproof material, The PC structural member has a PC core material, A cement-based filler is provided between an end surface of the wooden core material, which is an end surface of the wooden core material, and an end surface of the PC core material, which is an end surface of the PC core material, A joint space is provided between the end surface of the wooden structural member finishing material, which is the end surface of the wooden structural member finishing material, and the end surface of the PC structural member, which is the end surface of the PC structural member, A fireproof filler is provided between the cementitious filler and the joint space. Connection structure.

2. A connection structure for connecting a wooden structural member and a PC structural member that constitutes a joint of the wooden structural member, The wooden structural member has a wooden core material, a fireproof material on the outside of the wooden core material, and a wooden structural member finishing material on the outside of the fireproof material, The PC structural member has a PC core material and a PC structural member finishing material on the outside of the PC core material, A cement-based filler is provided between an end surface of the wooden core material, which is an end surface of the wooden core material, and an end surface of the PC core material, which is an end surface of the PC core material, A joint space is provided between the end surface of the wooden structural member finishing material, which is the end surface of the wooden structural member finishing material, and the end surface of the PC structural member finishing material, which is the end surface of the PC structural member finishing material; The outer surface of the PC structural member finishing material and the outer surface of the wooden structural member finishing material are flush with each other, The joint space is a cavity between the finished end surface of the wooden structural member and the finished end surface of the PC structural member. Connection structure.

3. A fireproof filler is provided between the cementitious filler and the joint space. The connection structure according to claim 2 .

4. The fireproof filler is provided between the end face of the PC core material and the end face of the fireproof material. The connection structure according to claim 1 or 3.

5. A structure having a connection structure that connects a wooden structural member and a PC structural member that constitutes a joint of the wooden structural member, The connection structure is a connection structure according to any one of claims 1 to 4. structure.

6. A construction method for a structure constructed by connecting a wooden structural member to a PC structural member that constitutes a joint of the wooden structural member, comprising: The wooden structural member has a wooden core material, a fireproof material on the outside of the wooden core material, and a wooden structural member finishing material on the outside of the fireproof material, The PC structural member has a PC core material, The wooden structural member and the PC structural member are arranged so that a joint space is formed between the wooden structural member finishing end face, which is the end face of the wooden structural member finishing material, and the PC structural member end face, which is the end face of the PC structural member, and a cement-based filler is injected between the wooden core end face, which is the end face of the wooden core material, and the PC core end face, which is the end face of the PC core material, and allowed to harden, thereby connecting the wooden structural member and the PC structural member, and a fire-resistant filler is disposed between the cement-based filler and the joint space. Construction method of the structure.

7. A construction method for a structure constructed by connecting a wooden structural member to a PC structural member that constitutes a joint of the wooden structural member, comprising: The wooden structural member has a wooden core material, a fireproof material on the outside of the wooden core material, and a wooden structural member finishing material on the outside of the fireproof material, The PC structural member has a PC core material and a PC structural member finishing material on the outside of the PC core material, The wooden structural member and the PC structural member are arranged so that a joint space is formed between the end face of the wooden structural member finishing material, which is the end face of the wooden structural member finishing material, and the end face of the PC structural member finishing material, which is the end face of the PC structural member finishing material. A cement-based filler is injected between the end face of the wooden core material, which is the end face of the wooden core material, and the end face of the PC core material, which is the end face of the PC core material, and hardened to connect the wooden structural member and the PC structural member. The PC structural member finishing material and the wooden structural member finishing material are arranged so that the outer surface of the PC structural member finishing material and the outer surface of the wooden structural member finishing material are flush with each other, and the joint space is made hollow. Construction method of the structure.

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