JP2013053415A - Joint structure of heterogeneous structural member, and composite structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely transmit a load among a reinforced-concrete construction, a structural member of the reinforced-concrete construction or a steel construction, and a structural member of a wooden construction with fire resistance.SOLUTION: The load can be securely transmitted between a column 18 as a structural member formed of reinforcing concrete and a beam 26 of a wooden construction including a beam core material 32, a burning stopper layer 34, and a burning margin layer 36 through a joint structure 38 of heterogeneous structural members that includes the column 18, the beam 26, and a joint member 40 which is fixed to the column 18 and to which an end 60 of the beam core material 32 is connected.

Description

  The present invention relates to a reinforced concrete structure, a steel reinforced concrete structure or a steel structure structural member and a heterogeneous structural member joining structure which joins a wooden structural member, and a plurality of structures joined by the heterogeneous structural member joining structure. The present invention relates to a composite structure.

  Conventionally, several techniques for joining structural members having different structures have been proposed. For example, Patent Document 1 discloses a method for joining different structural members that joins a reinforced concrete column and a steel beam.

  On the other hand, Patent Document 2 includes a load supporting layer, a flame stop layer provided outside the load support layer, and a burn allowance layer provided outside the flame stop layer as a wooden structural member having fire resistance. A composite wood structure is disclosed.

  Here, when joining a fire-resistant three-layer composite wood structure material disclosed in Patent Document 2 and a reinforced concrete structure, a steel reinforced concrete structure or a steel structure member, the reinforced concrete structure, the steel frame It must be joined so that the load can be reliably transmitted between the reinforced concrete or steel structural member and the load support layer of the composite wooden structure material.

JP-A-6-212700 JP 2008-2189 A

  In consideration of such facts, the present invention joins dissimilar structural members capable of reliably transmitting a load between a reinforced concrete structure, a steel reinforced concrete structure or a steel structural member, and a wooden structural member having fire resistance. It is an object of the present invention to provide a composite structure having a structure and a plurality of structures joined by the joining structure of the different structural members.

  The invention according to claim 1 is formed of reinforced concrete, steel reinforced concrete, or a steel frame, and surrounds a structural member that constitutes a column, a beam, or a wall, a wooden beam core that supports a load, and a side surface and a lower surface of the beam core. A flame stop layer, a beam having a wood burn-in layer surrounding a side surface and a lower surface of the flame stop layer, and a joining member fixed to the structural member and connected to an end of the beam core. This is a joining structure of different structural members.

  In the first aspect of the present invention, a load is reliably applied between a structural member that is formed of reinforced concrete, steel reinforced concrete, or a steel frame and that constitutes a column, a beam, or a wall, and a wooden beam that has fire resistance. Can be transmitted. That is, the structural member and the beam can be joined.

  The invention according to claim 2 is a composite structure having a joint structure of dissimilar structural members according to claim 1, wherein the first structure including the structural member, the second structure including the beam, It is a composite structure which has the junction part which pin-joins the edge part of a beam core material to the said joining member so that rotation is possible.

  According to the second aspect of the present invention, the end portion of the beam core can be rotationally pin-bonded to the bonding member, so that the bending moment generated at the end of the beam core can be reduced or eliminated.

  According to a third aspect of the present invention, the first structure is a core part that forms a core space.

  In the invention according to claim 3, by making the core part forming the core space the first structure, the high strength possessed by the core part can be effectively used to improve the strength of the entire composite structure.

  Since this invention was set as the said structure, a load can be reliably transmitted between the structural member of a reinforced concrete structure, a steel reinforced concrete structure, or a steel structure, and the wooden structural member which has fire resistance.

It is a plane sectional view showing a composite structure concerning an embodiment of the present invention. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a plane sectional view showing joined structure which joins a wooden pillar and a wooden beam concerning an embodiment of the present invention. It is a perspective view which shows the joining structure of the dissimilar structure member which concerns on embodiment of this invention. It is front sectional drawing which shows the modification of the joining structure of the dissimilar structure member which concerns on embodiment of this invention. It is front sectional drawing which shows the modification of the joining structure of the dissimilar structure member which concerns on embodiment of this invention. It is front sectional drawing which shows the modification of the joining structure of the dissimilar structure member which concerns on embodiment of this invention. It is front sectional drawing which shows the modification of the joining structure of the dissimilar structure member which concerns on embodiment of this invention. It is front sectional drawing which shows the modification of the joining structure of the dissimilar structure member which concerns on embodiment of this invention. It is a perspective view which shows the modification of the joining structure of the dissimilar structure member which concerns on embodiment of this invention. It is a plane sectional view showing the modification of the composite structure concerning the embodiment of the present invention.

  Embodiments of the present invention will be described with reference to the drawings. First, the joining structure of a dissimilar structure member and a composite structure according to an embodiment of the present invention will be described.

  As shown in the cross-sectional plan view of FIG. 1, a building 10 as a composite structure includes a core part structure 12 made of reinforced concrete as a first structure and a core part structure, which is disposed in the approximate center of the building 10. 12 has a wooden outer peripheral structure 14 as a second structure, and a joining portion 16, which are arranged so as to surround the periphery of 12.

  The core part structure 12 forms an elevator shaft 30 as a core space, and constitutes a core part serving as an earthquake-resistant element of the building 10. The outer peripheral structure 14 mainly bears a static load acting on the building 10.

  As shown in FIG. 1 and FIG. 2, which is a cross-sectional view taken along the line AA in FIG. 1, the core structure 12 is constituted by columns 18, beams 20 and walls (not shown) as structural members formed of reinforced concrete. Has been. The column 18 and the beam 20 are joined by a column-beam joint structure generally used in joining of a column and a beam formed of reinforced concrete.

  As shown in FIGS. 1 and 2, the outer peripheral structure 14 includes a wooden column 24, a beam 26, a wall (not shown), and a floor slab 28 formed of reinforced concrete.

  As shown in FIG. 2 and FIG. 3 which is a BB cross-sectional view of FIG. 2, the beam 26 includes a wooden beam core 32 that supports a load, and a dead end layer 34 that surrounds a side surface and a lower surface of the beam core 34. And a wooden burning allowance layer 36 surrounding the side surface and the lower surface of the dead end layer 34.

  As shown in FIG. 4, which is an enlarged view of the upper left corner portion of the outer peripheral structure 14 depicted in FIG. 1, the column 24 includes a wooden column core member 42 that supports a load, and a flame that surrounds the outer periphery of the column core member 42. A stop layer 44 and a wooden burn allowance layer 46 surrounding the outer periphery of the stop layer 44 are provided.

  As shown in FIG. 2, the column 18 and the beam 26 are joined by a joining structure 38 as a joining structure of different structural members. The joint structure 38 includes a column 18, a beam 26, and a joint member 40 as structural members.

  As shown in the perspective views of FIGS. 2 and 5, the joining member 40 includes a back wall portion 48, side wall portions 50 and 52 fixed to the left and right end portions of the back wall portion 48, the back wall portion 48 and the side wall. It is comprised by the bottom part 54 fixed to the lower end part of the parts 50 and 52. As shown in FIG. The back wall portion 48, the side wall portions 50 and 52, and the bottom portion 54 are formed of a steel plate member.

  The joining member 40 is integrated and fixed to the pillar 18 by being embedded in the concrete forming the pillar 18. Further, the integration with the concrete is enhanced by the headed stud 56 fixed to the back surface of the back wall 48.

  The joining member 40 has a box-shaped insertion part 58 as a joining part formed by being surrounded by the back wall part 48, the side wall parts 50 and 52, and the bottom part 54. The insertion portion 58 has an upper surface and a front surface that are open. The beam 26 is joined to the column 18 by inserting and connecting the end portion 60 of the beam core 32 to the insertion portion 58. The end portion 60 of the beam core material 32 is not fixed to the joining member 40 with bolts or the like so as to prevent the end portion 60 from rotating with respect to the joining member 40. That is, the end portion 60 of the beam core material 32 is rotatably pin-connected to the bonding member 40 (bonding portion).

  With such a configuration, the shear load is transmitted between the column 18 and the beam core member 32 via the joining member 40, and the bending moment generated at the end portion 60 of the beam core member 32 can be reduced or eliminated. In addition, if such an effect does not need to be acquired, you may fix the edge part 60 of the beam core material 32 to the joining member 40 (joint part) with a volt | bolt, a drift pin, etc.

  As shown in FIG. 2, a floor slab 28 made of reinforced concrete is provided on the upper surface of the beam 26. That is, the floor slab 28 is provided on the upper surfaces of the beam core material 32, the flame stop layer 34, and the burn allowance layer 36. As a result, the outer periphery of the beam core 32 is surrounded by the flame stop layer 34 and the floor slab 28.

  2 and 5, the end 60 of the beam core 32 is inserted into and connected to the insertion portion 58, and the end face of the flame stop layer 34 is bonded in a state where the beam 26 is bonded to the column 18. The front end surface 62 of the member 40 is in contact with the side wall surface 64 of the column 18 located near the outer periphery of the front end surface 62. That is, the end surface of the flame stop layer 34 is in contact with the concrete surface forming the side wall surface 64 of the column 18.

  As shown in FIG. 4, the column 24 and the beam 26 are joined by a joining structure 66 having a joining member 40. In the column 24, the joining member 40 is inserted into a groove 68 formed in the up-down direction in the burning allowance layer 46 and the non-burning layer 44 so that the back surface of the back wall portion 48 contacts the outer peripheral surface of the column core material 42. Are arranged.

  Further, a through hole 70 penetrating the column core material 42 and the flame stop layer 44 substantially horizontally is formed so as to bisect the structural cross section (horizontal cross section) of the column core material 42, and is fixed to the through hole 70. An anchor bolt 72 as a member passes therethrough. Then, the joining member 40 is fixed to the column core member 42 by screwing and tightening nuts 74 to both ends of the anchor bolt 72.

  A plurality of (for example, three) through holes 70 are formed at equal intervals in the vertical direction, and anchor bolts 72 are provided in all of the through holes 70. In addition, a gap 76 formed between the side wall portions 50 and 52 of the joining member 40 and the combustion allowance layer 46, a notch 78 formed in the combustion allowance layer 46 to accommodate the nut 74, and a nut 74 are accommodated. For this purpose, the accommodating portion 80 provided inside the joining member 40 is closed by a filler M such as mortar. In addition, the filler M should just be the material which can block the clearance gap 76, the notch 78, and the accommodating part 80, and has fire resistance and heat absorption.

  The beam 26 is joined to the column 24 by inserting and connecting the end portion 60 of the beam core 32 to the insertion portion 58. The end 60 of the beam core 32 may be fixed to the joining member 40 with a bolt, a drift pin, or the like, or may be pin-joined to the joining member 40 so as to be rotatable. In a state where the beam 26 is joined to the column 24, the end face of the flame stop layer 34 is in contact with the front end face 62 of the joining member 40 and the end face 82 of the filler M filled in the gap 76.

  As described above, in the joining structure 66, the side surfaces of the joining member 40 are covered with the flame stop layer 44 and the filler M, and the side surfaces of the flame stop layer 44 and the filler M are covered with the burning allowance layer 46. The end face of the layer 34 is brought into contact with the end face 82 of the filler M and the front end face 62 of the joining member 40, thereby imparting fire resistance to the joint portion between the column 24 and the beam 26. The column 24 and the beam 26 may be joined by any joining structure as long as fire resistance can be imparted to the joint.

  Next, the operation and effect of the joint structure of different structural members and the composite structure according to the embodiment of the present invention will be described.

  In the joining structure 38 as a joining structure of dissimilar structural members according to the embodiment of the present invention, as shown in FIG. 2, the end portion 60 of the beam core 32 is attached to the joining member 40 fixed to the column 18 as the structural member. By connecting, the load can be reliably transmitted between the beam 26 (the beam core 32) and the column 18, and the beam 26 can be joined to the column 18.

  Further, when a fire occurs, a flame ignites the burning allowance layer 36, and the burning allowance layer 36 burns. The burned combustion allowance layer 36 is carbonized. Therefore, the heat transfer from the outside of the beam 26 to the beam core 32 and the oxygen supply are blocked by the carbonized burning allowance layer 36 and the floor slab 28 formed of concrete, and the burning stop layer 34 absorbs heat. The temperature rise of the beam core 32 during the fire (heating) and after the end of the fire (heating) can be suppressed. Thereby, at the time of fire (heating) and after the end of the fire (heating), the beam core material 32 is kept below the ignition temperature for a predetermined time (for example, 1 hour in the case of fire resistance for 1 hour). It is possible to cause the beam 26 to function as a member that supports the load by burning without stopping.

  As shown in FIGS. 2 and 5, the end surface of the flame stop layer 34 is connected to the front end surface 62 of the joining member 40 and the side of the column 18 in a state where the end portion 60 of the beam core 32 is connected to the insertion portion 58. Since it is in contact with the wall surface 64, it is possible to suppress the heat from entering from the joint portion between the column 18 and the beam 26 and the temperature of the beam core 32 of the beam 26 from rising. That is, fire resistance can be imparted to the joint between the column 18 and the beam 26.

  Therefore, at the time of fire (heating) and after the end of the fire (heating), the beam core material 32 is kept below the ignition temperature for a predetermined time (for example, 1 hour in the case of 1 hour fire resistance), and the beam core material 32 is burned. It is possible to cause the beam 26 to function as a member that supports the load by burning without stopping.

  Further, as shown in FIG. 5, the joining member 40 fixed to the column 18 has side surfaces (side walls 50 and 52) and a lower surface (bottom 54) covered with concrete forming the column 18, and an upper end surface. The floor slab 28 is covered with concrete. Further, in a state where the end portion 60 of the beam core member 32 is connected to the insertion portion 58, the end surface of the flame stop layer 34 is in contact with the front end surface 62 of the joining member 40 and the side wall surface 64 of the column 18.

  By these, it is possible to suppress the temperature rise of the joining member 40 at the time of fire (heating) and after the end of the fire (heating), based on the same principle as that described above “the temperature rise of the beam core 32 is suppressed”. it can. Thereby, fire resistance can be given to the joint portion between the column 18 and the beam 26.

  Further, the beam 26 can be joined to the column 18 by inserting the end portion 60 of the beam core 32 into the insertion portion 58 of the joining member 40. That is, the beam 26 can be joined to the column 18 without making complicated work such as bolt joining and concrete placement as essential work.

  Moreover, in the building 10 as a composite structure according to the embodiment of the present invention, as shown in FIG. 1, the weight of the entire building 10 can be reduced by the wooden outer peripheral structure 14. Moreover, the intensity | strength of the whole building 10 can be improved by making the core part structure 12 reinforced concrete structure.

  In addition, as shown in FIG. 2, the end portion 60 of the beam core member 32 is rotationally pin-bonded to the bonding member 40, thereby reducing or eliminating the bending moment generated at the end portion 60 of the beam core member 32. it can.

  Moreover, as shown in FIG. 1, in the building 10, the core part which forms the elevator shaft 30 as a core space is made into the core part structure 12, and the high intensity | strength which the core part structure 12 has has the whole building 10 whole. It can be effectively used to improve the strength of the steel.

  The embodiment of the present invention has been described above.

  In the embodiment of the present invention, the example in which the pillar 18 and the beam 26 are joined by the joining member 40 has been shown. However, if the load can be reliably transmitted between the pillar 18 and the beam core member 32, the joining member is used. May be formed of any material and may have any shape. For example, the joining member may be formed of any material such as wood, steel, resin, concrete, or the like as long as the required strength is obtained. As described above, in the joining structure 38, since the temperature rise of the joining member is suppressed, the joining of the column 18 and the beam 26 is possible even if the joining member is formed of a material that cannot be expected to have fire resistance or heat absorption. Strength is not impaired during fire (heating) and after the end of fire (heating).

  Further, for example, the beam 26 may be joined to the column 18 by the joining plate 88 or the cotter groove member 90 used in the joining structures 84 and 86 shown in FIGS. As shown in the front cross-sectional view of FIG. 6, in the joining structure 84, the end portion of the steel joining plate 88 as a joining member is fixed to the column 18. Then, the beam 26 is bonded to the column 18 by connecting the bonding plate 88 to the beam core 32 by a plurality of drift pins 92.

  As shown in the front sectional view of FIG. 7, in the joining structure 86, a steel cotter groove member 90 as a joining member is fixed to the column 18, and a steel cotter groove member 94 is provided at the end of the beam core 32. Is fixed. The outer end surface of the cotter groove member 90 (the top surface of the protruding portion) is substantially flush with the outer peripheral surface of the column 18. Then, a filling material M such as mortar is filled between the cotter groove member 90 and the cotter groove member 94 and cured to join the beam 26 to the column 18. The shape of the cotter groove member may be any shape as long as the vertical shearing force can be reliably transmitted between the column 18 and the beam core 32.

  In the embodiment of the present invention, the example in which the joining member 40 is fixed to the pillar 18 by embedding the joining member 40 in the concrete forming the pillar 18 is shown. As long as the load can be reliably transmitted, the joining member 40 may be fixed to the column 18 by any method. For example, the joining member 40 may be fixed to the column 18 or the wall 102 as in the joining structures 96, 98, and 100 shown in FIGS.

  As shown in the front sectional view of FIG. 8, in the joining structure 96, the joining member 40 is fixed to the pillar 18 by a bolt 104 embedded in the pillar 18. Further, as shown in the front sectional view of FIG. 9, in the joining structure 98, the joining member 40 is fixed to the wall 102 by an anchor bolt 106 penetrating the wall 102 made of reinforced concrete.

  Moreover, as shown in the front sectional view of FIG. 10 and the perspective view of FIG. 11, in the joint structure 100, the precast concrete upper column 18 </ b> B is placed on the precast concrete lower column 18 </ b> A. The lower column 18A and the upper column 18B are joined together by a tubular member 110 made of steel. The cylindrical member 110 is a rectangular tube-shaped member, and a lower column mortise portion 112A formed at the upper portion of the lower column 18A and an upper column mortise portion 112B formed at the lower portion of the upper column 18B are formed into the cylindrical member 110. The lower column 18A and the upper column 18B are joined to each other. The cylindrical member 110 is fixed to the lower column tenon portion 112A and the upper column tenon portion 112B with an adhesive.

  The upper surface of the lower mortise portion 112A and the lower surface of the upper mortise portion 112B may be in direct contact with each other, may be filled with a filler M such as mortar or an adhesive, and a steel plate between them. You may arrange. If the filler M is filled or a steel plate is arranged, the load of the upper column 18B can be uniformly transmitted to the upper surface of the lower column tenon portion 112A.

  A block member 116 made of reinforced concrete is provided outside the corner portion of the cylindrical member 110, and the joining member 40 is disposed between the block members 116. The joining member 40 is fixed to the tubular member 110 by welding or the like in a state where the back surface of the back wall portion 48 is in contact with the outer peripheral surface of the tubular member 110.

  Moreover, the beam core material 32, the column core material 42, and the burning allowance layers 36 and 46 shown by embodiment of this invention should just be formed with the timber. For example, the beam core material 32, the column core material 42, and the burning allowance layers 36 and 46 are beam materials and column materials (hereinafter referred to as “general wood”) used in general wooden buildings such as Yonematsu, Karamatsu, firewood, cedar, and Asunaro. Or by processing these general timbers into a prismatic single material, and assembling a plurality of single materials and bonding them together with an adhesive. Good.

  Moreover, the flame stop layers 34 and 44 should just be a layer which can absorb heat. For example, the flame-out layers 34 and 44 may be formed of a material having a larger heat capacity than general wood, a material having higher heat insulation than general wood, or a material having higher thermal inertia than general wood, or these materials. And general wood may be combined.

  Examples of the material having a larger heat capacity than general wood include inorganic materials such as mortar, stone, glass, and fiber reinforced cement, and various metal materials. Examples of the material having higher heat insulation than general wood include calcium silicate board, rock wool, and glass wool. Examples of the material having higher thermal inertia than general wood include wood such as Selangan Batu, Jara, and Bongoshi.

  In the embodiment of the present invention, as shown in FIG. 3, the flame stop layer 34 surrounds the side surface and the lower surface of the beam core 32, and the burn allowance layer 36 surrounds the side surface and the lower surface of the flame stop layer 34. Although an example has been shown, the flame stop layer 34 may surround the outer periphery of the beam core 32, and the burn allowance layer 36 may surround the outer periphery of the flame stop layer 34.

  Further, in the embodiment of the present invention, an example in which the column 18 formed of reinforced concrete is used as a structural member is shown. However, the structural member is formed of reinforced concrete, steel reinforced concrete, or a steel frame, and constitutes a column, beam, or wall. If it is.

  For example, when the structural member is a column, beam, or wall formed of steel reinforced concrete, the end surface of the flame stop layer 34 forms the side wall surface of the structural member in a state where the structural member and the beam 26 are joined. Therefore, the joint portion between the column 18 and the beam 26 is provided with substantially the same fire resistance as the joint structure 38 (see FIG. 2) shown in the embodiment of the present invention. Can do.

  Also, for example, when the structural member is a pillar or beam formed of a steel frame, by applying a fireproof coating to the outer peripheral surface of the structural member, by making this fireproof coating surface face the end surface of the flame stop layer 34, The joint portion between the column 18 and the beam 26 can be provided with substantially the same fire resistance as the joint structure 38 (see FIG. 2) shown in the embodiment of the present invention.

  Moreover, in embodiment of this invention, the example which joins the pillar 18 as a structural member formed with the reinforced concrete, and the wooden beam 26 comprised by the beam core material 32, the dead end layer 34, and the burning allowance layer 36 is shown. However, the structural member is a wooden member composed of a column core material, a beam core material or a wall core material, a flame stop layer, and a burning allowance layer, and a beam joined to the wooden member is formed of reinforced concrete, steel reinforced concrete or steel frame. It is good also as a made member.

  In the embodiment of the present invention, the end 60 of the beam core 32 is inserted and connected to the insertion portion 58, and the end face of the flame stop layer 34 is joined to the joining member 40 in a state where the beam 26 is joined to the column 18. In this example, the front end face 62 and the side wall face 64 of the column 18 are brought into contact with each other. However, the end face of the flame stop layer 34, the front end face 62 of the joining member 40, the end face of the flame stop layer 34 and the side of the pillar 18 are shown. What is necessary is just to oppose the wall surface 64. FIG. That is, the end face of the flame stop layer 34 and the front end face 62 of the joining member 40, and the end face of the flame stop layer 34 and the side wall face 64 of the column 18 may be in contact with each other or may have a gap. . When there is a gap, in order to prevent heat from entering from the gap, it is preferable to fill the gap by filling with a filler M such as mortar.

  In the embodiment of the present invention, the example in which the two beams 20 and the two beams 26 are joined to the column 18 is shown. However, any number of beams 20 and 26 joined to the column 18 may be used. You may arrange in.

  Further, in the embodiment of the present invention, an example in which the beam 26 is configured by the beam core material 32, the flame stop layer 34, and the burn allowance layer 36 has been shown. However, the embodiment of the present invention is a general wooden beam. It can also be applied to.

  In the embodiment of the present invention, the floor slab 28 is formed of reinforced concrete. However, the floor slab 28 may not be formed of reinforced concrete. For example, an ALC (lightweight cellular concrete) slab, a perforated PC (prestressed concrete) slab, a half PC (prestressed concrete) slab, or a precast slab may be used. .

  In the embodiment of the present invention, an example in which the core part structure 12 is a core part that forms the elevator shaft 30 as a core space has been shown (see FIG. 1). Any part of the building may be configured.

  It is preferable that the core part structure 12 constitutes a core part that forms a core space and serves as an earthquake-resistant element. Here, the core space formed by the core part is an office building, etc., in which shared facilities and equipment such as stairs, elevator shafts, toilets, etc. are concentrated and arranged at a fixed plane position on each floor of the building (core system) ) In these shared facilities and equipment.

  FIG. 12 shows an example of a building 118 as a composite structure having a core space as a staircase. The building 118 includes a reinforced concrete core part structure 120 as a first structure disposed on the left side of the building 118, and a wooden structure as a second structure disposed on the right side of the core part structure 120. A partial structure 122 and a joint 16 are provided.

  The core part structure 120 forms a staircase space 124 as a core space, and constitutes a core part that becomes an earthquake-resistant element of the building 118. The adjacent structure 122 mainly bears a static load acting on the building 118.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment at all, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect.

10, 118 buildings (composite structures)
12, 120 Core part structure (core part, first structure)
14 Outer peripheral structure (second structure)
16 Joint 18 Column (Structural member)
18A Lower pillar (structural member)
18B Upper pillar (structural member)
26 Beam 30 Elevator shaft (core space)
32 Beam core material 34 Burning-out stop layer 36 Burning allowance layers 38, 84, 86, 96, 98, 100 Joint structure (joint structure of different structural members)
40 Joining member 60 End 88 Joining plate (joining member)
90 Cotter groove member (joining member)
102 Wall (Structural member)
122 Adjacent structure (second structure)
124 Stair space (core space)

Claims (3)

A structural member formed of reinforced concrete, steel reinforced concrete or steel and constituting a column, beam or wall;
A wooden beam core supporting a load, a flame stop layer surrounding a side surface and a lower surface of the beam core material, and a beam including a wood burn allowance layer surrounding a side surface and a lower surface of the flame stop layer;
A joining member fixed to the structural member and connected to an end of the beam core;
A structure for joining different kinds of structural members. In the composite structure having the joining structure of different types of structural members according to claim 1,
A first structure comprising the structural member;
A second structure comprising the beam;
A joint that rotatably pins the end of the beam core to the joint; and
A composite structure.   The composite structure according to claim 2, wherein the first structure is a core portion that forms a core space.

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