JP2003239403A - Joint structure of composite structure and its construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure of a composite structure having good workability and high joint strength with a simplified constitution and its construction method. <P>SOLUTION: An outward projection member 4 is fixed on the circumferential surface of a steel pipe 3, an inward projection member 7 is fixed on the inside circumferential surface of a cylindrical body 6 of a joint member 5, a bottom slab 9 with a hole making the steel pipe 3 pass through in the central part is fixed to the bottom, and the steel pipe 3 passes through the joint member 5 until both outsides 4a and 7a of the outward projection member 4 and the inward projection member 7 are connected to each other. Cage reinforcement 13 combining a plurality of reinforcing bars 13 with each other is mounted on the upper end face of the steel pipe 3 and, at the same time, a steel frame beam 10 is connected to the side of the joint member 5 with a means such as bolt connection or welding or the like. Then, after the inside of the steel pipe 3 has been filled with a concrete 11, a floor slab formed upward of the steel frame beam 10 is constructed, and at the same time, a joint inside filler 15 is cast inward of the joint member 5. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for a composite structure having a simple structure, good workability, and high joint strength, and a method for constructing the joint structure.

[0002]

2. Description of the Related Art In recent years, a building having a composite structure, in which a filled steel tube concrete structure is applied to a column and a steel frame structure is applied to a beam, is being put to practical use. As described above, in the case where the pillar and the beam are different structural members, an effective structure of the joint portion that is structurally reliable and can be easily integrated is sought, and various types of structural members have been used so far. A joint structure is proposed.

Under such circumstances, as one of the joint structures of a composite structure, a structure in which the steel pipe concrete column and the steel frame beam are joined together through a tubular joint member is generally used. This is to arrange a joint part member to which a steel beam is joined on the side surface between steel pipes that are vertically arranged, and to fill the filler inside the joint part member and the upper and lower steel pipes. , To build a joint structure. In these joint structures, stress transmission between the steel pipe and the joint member is smoothly performed through the infill material.

[0004]

However, in consideration of the fact that the performance of the joint portion having such a structure is affected by the properties of the filler and that the self-weight and seismic force act during an earthquake, It becomes necessary to construct the mouth member large.

In view of the above circumstances, the present invention provides a joint structure of a composite structure having a simple structure, good workability, and high joint strength,
And its construction method.

[0006]

A joint structure for a composite structure according to claim 1 is a steel pipe concrete column of a filled steel pipe concrete structure in which concrete is filled in a steel pipe,
A joint structure of a composite structure building consisting of steel-framed steel beams, wherein the steel pipe and a plurality of outer parts fixed on a normal line at a predetermined interval in the circumferential direction on the outer peripheral surface near the upper end of the steel pipe. Direction protruding member, a plurality of reinforcing bars arranged at a predetermined interval along the inner peripheral surface of the steel pipe in a state in which the upper portion of the steel pipe protrudes from the upper end surface, and the outer protruding member of the steel pipe are fixed. A joint portion member, which is arranged so as to include the vicinity of the upper end portion and has a cylindrical body to which the inner protruding member is fixed at a position facing the outer protruding member on the inner peripheral surface, and a side surface of the joint member. The steel beam and the steel pipe and a filler filled inward of the steel pipe and the joint member, the outer protruding member fixed to the steel pipe, the lower side is longer than the upper side, The outer surface has a trapezoidal cross section that faces diagonally upward,
The inward projecting member fixed to the joint member has a trapezoidal cross section in which the upper side is longer than the lower side having an outer surface parallel to the outer projecting member. It is characterized in that the outer surfaces of the projecting members are in contact with each other.

The joint structure for a composite structure according to a second aspect is characterized in that the upper end surface of the steel pipe projects above the upper end surface of the joint portion member.

According to a third aspect of the present invention, there is provided a joint structure for a composite structure, wherein the inner peripheral surface of the joint portion member is parallel to the inward projecting member and is a pair of guide plates sandwiching the guide plate. It is characterized by being fixed.

In the joint structure for a composite structure according to a fourth aspect, a bottom slab having a hole through which the steel pipe penetrates is provided at a bottom portion of the joint member, and a hole edge portion of the bottom slab is provided. , In the gap with the outer peripheral surface of the steel pipe penetrated into the hole,
It is characterized in that a filler is arranged.

According to a fifth aspect of the present invention, there is provided a method for constructing a joint structure of a composite structure, wherein an outer projecting member having a trapezoidal cross section in which a lower side is longer than a plurality of upper sides on an outer peripheral surface near an upper end of a steel pipe. First step of fixing the above-mentioned to the normal line at a predetermined interval in the circumferential direction, and an inward projecting member having an outer surface parallel to the outer projecting member on the inner circumferential surface of the joint member made of a cylindrical body. A second step of fixing the outer protruding member to a position opposed to the outer protruding member, and the inner portion of the joint member so that outer surfaces of the outer protruding member and the inner protruding member are in contact with each other. A third step of inserting the upper end portion of the steel pipe, and a plurality of reinforcing bars are arranged at predetermined intervals along the inner peripheral surface of the steel pipe so that the upper portion of the steel pipe protrudes from the upper end face of the steel pipe, Fourth step of fixing the steel beam to the outer peripheral surface of the member, and filling the inside of the steel pipe with a filler. Together, it is characterized by comprising a fifth step of filling the filling material inward of the Joint portions steel.

According to a sixth aspect of the present invention, there is provided a method of constructing a joint structure for a composite structure, wherein in the second step, the inner peripheral surface of the joint member made of a cylindrical body has both inner protrusion members. A pair of guide plates are fixed to the side portions so as to be sandwiched in parallel with the inward projecting member, and in the third step, the outer projecting member is placed between the pair of guide plates to form the guide plate. It is characterized in that the steel pipe penetrates inward of the mouth member.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a joint structure of a composite structure of the present invention and a method of constructing the joint structure will be described in detail with reference to FIGS.

As shown in FIG. 1, a joint structure 1 of a composite structure includes a steel pipe concrete column 2 and a plurality of reinforcing bars 12 provided so as to project above the steel pipe concrete column 2.
And a joint member 5 that encloses the vicinity of the upper end of the steel pipe concrete column 2 and a steel beam 10 fixed to the side surface of the joint member 5. Here, the steel beam 10 is made of H-shaped steel.

The steel pipe concrete column 2 is made by filling concrete 11 as a filler in a steel pipe 3 which is vertically erected on the vertical axis, and the concrete pipe 11 is restrained by the steel pipe 3 to provide excellent yield strength. To hold. In this steel pipe concrete column 2, since the steel pipe 3 has a function of shear reinforcement, it is not necessary to perform a rebar work like a reinforced concrete column.

As shown in FIG. 2, an outer protruding member 4 is fixed to the outer peripheral surface of the steel pipe 3 constituting the steel pipe concrete column 2 in the vicinity of the upper end. The outward projecting member 4 is made of a steel plate having rigidity that is unlikely to be deformed by an external force, and has a trapezoidal cross section in which the upper side is shorter than the lower side. Therefore, the outer side surface 4a of the outward protruding member 4 is directed obliquely upward.

In the present embodiment, the outward projecting member 4
Are fixed to the outer peripheral surface of the steel pipe 3 so as to be arranged on four normal lines in the 90-degree direction when viewed from the central axis of the steel pipe 3, but are evenly spaced in the circumferential direction of the steel pipe 3. As long as it is located at, it may be located at three or four or more locations. Further, although a plate-shaped member is used for the outward protruding member 4, any member having any member thickness may be used as long as it can form an obliquely upward slope on the outer surface without being limited to this. good.

By the way, in the vicinity of the upper end of the steel pipe 3 to which the outward protruding members 4 are fixed, the joint member 5 is arranged so as to include them. The joint member 5 includes a cylindrical body 6, an inward protruding member 7, a pair of guide plates 8 and a bottom plate 9.

The cylindrical body 6 has an inner diameter capable of containing the steel pipe 3 in a state in which the outer protruding member 4 is fixed to the outer peripheral surface, and a member height capable of covering the entire outer protruding member 4. And a bottom plate 9 having a hole formed in the center thereof for allowing the steel pipe 3 to penetrate therethrough.

As shown in FIG. 3, the bottom slab 9 is provided for filling the inside of the cylinder 6 which constitutes the above-mentioned mouth part member 5 with the filler 15 inside the mouth part. When the steel pipe 3 is penetrated into the bottom plate 9, the inner edge portion 9a of the hole of the bottom plate 9
Then, the filling member 14 is sandwiched between the outer peripheral surface of the steel pipe 3 and the bottom portion of the joint member 5 is sealed.

On the other hand, at the position on the inner peripheral surface of the cylindrical body 6 which faces the outer protruding member 4 when the steel pipe 3 is enclosed,
The inward protruding member 7 is fixed. The inward projecting member 7 is made of a steel plate having rigidity that is unlikely to be deformed by an external force, and its shape has a trapezoidal cross section in which the lower side is shorter than the upper side, and the outer side surface 7a is It is directed obliquely downward and has a slope capable of contacting the outer side surface 4a of the outer protruding member 4 with each other.

At this time, in the state that the outer side surfaces 4a, 7a of the outer protruding member 4 and the inner protruding member 7 are joined to each other at their surfaces, the vicinity of the upper end portion is arranged inside the port member member 5. As shown in FIG. 3, the mounting height of the outward projecting member 4 is set so that the upper end surface 3a of the steel pipe 3 is located slightly above the upper end surface 5a of the connector member 5. Be careful. This is because the joint portion when a new steel pipe 3 is placed on the upper portion of the steel pipe 3 is positioned above the joint member 5, so that the steel beam is joined to the joint member 5 later. This is because it is not necessary to mount a new steel pipe 3 until the concrete of the floor slab constructed above 10 is driven.

Further, as shown in FIG. 4, the inner peripheral surface of the cylindrical body 6 near both sides of the inward protruding member 7 is parallel to the inner protruding member 7 and is sandwiched therebetween. And a pair of guide plates 8 are fixed. This is because the steel pipe 3 is later inserted into the joint member 5, and the outer side surface 4a of the outer protruding member 4 of the steel pipe 3 and the inner protruding member 7 of the tubular body 6 forming the joint member 5 are connected. When the outer side surface 7a is butted against each other, the outer protruding member 4 fixed to the steel pipe 3 is inserted along the pair of the guide plates 8 to facilitate positioning. It is intended to be done.

Further, as a positioning guide when the steel pipe 3 is inserted into the joint member 5, it is not shown in the figure on the bottom plate 9 which is coaxial with the space sandwiched by the pair of guide plates 8 in the vertical direction. Notches are provided. The outer surface 4a of the outer protruding member 4 of the steel pipe 3 and the joint member 5 are also configured by inserting the position of the head of the outer protruding member 4 of the steel pipe 3 into the notch. The outer side surface 7a of the inward protruding member 7 of the cylindrical body 6 can be easily butted against each other.

On the other hand, a car rebar 13 is placed on the upper end surface 3a of the steel pipe 3. The car reinforcing bar 13 is previously integrated by using a hoop reinforcing bar 13a so that a plurality of reinforcing bars 12 are evenly arranged at predetermined intervals along the inner peripheral surface of the steel pipe 3. Therefore, by inserting the cage reinforcing bar 13 from above the steel pipe 3, a plurality of reinforcing bars 12 can be arranged at desired positions of the steel pipe 3. At this time, by adjusting the mounting height of the hoop muscle 13a to the reinforcing bar 12 in advance,
Positioning of the plurality of reinforcing bars 12 with respect to the steel pipe 3 in the height direction can be easily performed.

The joint structure 1 of such a composite structure is fixed to the outer surface 4a of the outer protruding member 4 fixed to the outer peripheral surface of the steel pipe 3 and the inner peripheral surface of the joint member 5. The self-weight of the steel beam 10 is smoothly transmitted to the steel pipe 3 by making the outer surface 7a of the inward protruding member 7 contact each other face to face.

Further, in the joint structure 1, the upper end surface 3a of the steel pipe 3 constituting the steel pipe concrete column 2 is arranged above the joint member 5 or above the floor slab. , VH separate casting, integrated casting,
The workability of the steel pipe concrete column 2 to be connected to the upper part later is secured.

Thus, as a function required for the filler 15 in the joint portion filled in the cylindrical body 6, stress due to horizontal load such as seismic force becomes a main function, and the load is reduced, and the joint portion is reduced. It is not necessary to form the member 5 large.

A method of constructing the joint structure 1 having the above-mentioned structure will be described below. (First step) Steel pipe concrete pillar 2 brought into the site
In the vicinity of the upper end portion of the outer peripheral surface of the steel pipe 3, an outer projecting member 4 having a trapezoidal cross section whose lower side is longer than the upper side formed so that the outer side surface 4a faces obliquely upward is formed on the outer peripheral surface of the steel pipe 3. After being fixed by means such as welding so as to be on the normal line at four places at intervals of 90 degrees from the central axis, the steel pipe 3
At the desired position.

(Second step) In a factory or the like, the upper side is longer than the lower side formed on the inner peripheral surface of the tubular body 6 of the joint member 5 so that the outer side surface 7a faces obliquely downward. The inward projecting member 7 having a trapezoidal cross section is arranged so as to be on the normal line at four positions with an interval of 90 degrees from the central axis of the tubular body 6,
Secure it by welding or other means. Further, the pair of guide plates 8 are fixed by welding or the like so that they are parallel to both sides of the inward protruding member 7. Further, a bottom plate 9 having a hole through which the steel pipe 3 penetrates is fixed to the bottom portion.

(Third step) The upper end surface 3a of the steel pipe 3 to which the outward projecting member 4 is fixed is brought into contact with the hole provided in the bottom plate 9 of the joint member 5, and the outward projecting member is formed. 4 is fitted into a notch of the bottom plate 9 (not shown), and the outer protruding member 4 is inserted so as to be sandwiched between the guide plates 8 forming a pair with the joint member 5, and the outer side of the steel pipe 3 is inserted. The protruding member 4 and the inward protruding member 7 of the joint member 5 are inserted until the outer surfaces 4a, 7a contact each other.

(Fourth step) On the upper end surface of the steel pipe 3, a car rebar 13 having a plurality of rebars 12 integrated in advance is placed, and the steel beam 1 is attached to the side surface of the joint member 5.
0 is joined by means such as bolt joining or welding.

The plurality of the reinforcing bars 12 constitutes the joint structure 1 as the cage reinforcing bars 13. Hoop muscle 1
Reference numeral 3a is an auxiliary reinforcing bar that secures the position of the reinforcing bar 12 until the filler 15 in the joint portion is driven, and is removed after the filler 15 in the joint portion is solidified.

The joining of the steel beam 10 is not limited to this, but a bracket is provided in advance on the side surface of the tubular body 6 forming the joint member 5, and the steel frame is attached to the bracket on the ground before being assembled. The beam 10 may be joined and built.

(Fifth Step) After that, the inside of the steel pipe 3 is filled with concrete 11, and then a floor slab constructed above the steel beam is constructed, and at the same time, the joint member 5 is formed. The filler 15 in the joint portion is placed inwardly. The VH separation casting and the floor slab construction may be performed simultaneously with the concrete 11, and the concrete of the floor slab and the filler 15 in the joint may be simultaneously cast.

According to the above-described structure, the joint structure 1 of the composite structure has the outer peripheral surface 4a of the outer protruding member 4 fixed to the outer peripheral surface of the steel pipe 3 and the inner peripheral surface of the joint portion member 5. Since the outer surface 7a of the inward protruding member 7 fixed to the surface is in contact with each other, the self-weight from the steel frame beam 10 smoothly acts as the axial force of the steel pipe 3 via the joint member 5. Therefore, when the steel beam 10 is built, it is possible to omit the support work for the joint member 5. Further, when a floor surface is formed by using the steel beam 10, when a deck plate or a precast concrete slab is used as a floor material, it is possible to construct a frame structure of a composite structure without support.

Further, since the own weight of the steel beam 10 is transmitted to the outer protruding member 4 of the steel pipe 3 through the inner protruding member 7 of the joint portion member 5, the steel pipe 3 and the joint The horizontal stress such as seismic force is dominant in the main stress transmitted by the filler due to the filler 15 in the filler which is filled inside the member 5, and the safety is ensured without increasing the size of the member 5. It is possible to form the joint structure 1 having a high composite structure.

Further, the outer side surface 4a of the outer protruding member 4
Since the surfaces and the outer side surface 7a of the inward protruding member 7 are in contact with each other in a state having a gradient with respect to the vertical axis, when the self-weight from the steel beam 10 is transmitted, the joint surface is compressed. As a result, frictional resistance is generated, and more firmly joining is performed, and since rotation is free, bending stress does not occur at the joining portion, and it is possible to construct a joint structure with higher safety.

The upper end surface of the steel pipe 3 has the connecting member 5
Since the joint surface of the steel pipe 3 in the vertical direction, which is located at the upper end face of the, is not included in the joint structure 1, it is necessary to install a new steel pipe 3 connected to the upper part until the concrete of the floor slab is driven in. Absent.

Since the pair of guide plates 8 are provided in the vicinity of both sides of the inward projecting member 7 of the port member 5, the positioning when the port member 5 is arranged on the steel pipe 3 is performed. It can be carried out easily and the workability can be improved.

The steel pipe 3 is provided at the bottom of the joint member 5.
Is provided with a bottom plate 9 having a hole penetrating therethrough in the center, and the gap between the hole edge portion 9a of the hole and the steel pipe 3 is closed by the filling member 14, so that the joint member member 5 is It is not necessary to use a mold or the like when placing the filler 15 in the joint portion, so that the workability is improved and the construction period can be greatly shortened.

[0041]

According to the joint structure of a composite structure according to claim 1, a composite structure comprising a steel pipe concrete column of a filled steel pipe concrete structure in which concrete is filled in the steel pipe, and a steel frame steel beam. A joint structure of a building, the steel pipe, a plurality of outwardly projecting members fixed on a normal line at a predetermined interval in the circumferential direction on the outer peripheral surface near the upper end of the steel pipe, and the steel pipe Arranged so as to include a plurality of rebars spaced apart at a predetermined interval along the inner peripheral surface of the steel pipe with the upper part protruding from the end face and the vicinity of the upper end portion to which the outer protruding member of the steel pipe is fixed. And a joint part member formed of a cylindrical body to which the inward projecting member is fixed at a position facing the outer projecting member on the inner peripheral surface, and the steel frame beam joined to the side surface of the spout member. A filling material filled inside the steel pipe and the connection member, The outer protruding member fixed to the steel pipe has a trapezoidal cross section in which the lower side is longer than the upper side and the outer surface faces upward, and the inner protruding member is fixed to the joint member. However, since the upper side has a trapezoidal cross section in which the upper side is longer than the lower side having the outer side surface parallel to the outer protruding member, and the outer side surfaces of the inner protruding member and the outer protruding member are in contact with each other, When the joint surface of the inner protruding member and the outer protruding member is compressed, frictional resistance is generated, and the joint is more firmly joined, and since it is free to rotate, when the self-weight of the steel beam is transmitted to the joint, The structure does not generate bending stress, and it is possible to construct a more safe joint structure.

Further, since the self-weight of the steel beam is transmitted to the outward projecting member of the steel pipe through the inward projecting member of the joint section member, the self-weight of the steel beam is directed to the inner side of the steel pipe and the joint section member. The main stress transmitted by the filling portion 15 due to the filling material 15 is predominantly horizontal load such as seismic force. It is possible to form a structure.

According to the joint structure of the composite structure of claim 2, since the upper end surface of the steel pipe projects upward from the upper end surface of the joint member, the joint surface of the steel pipe in the vertical direction is formed. However, since it is not included in the joint structure, the workability of a new steel pipe connected to the upper part is improved.

According to the joint structure of the composite structure of the third aspect, a pair is formed on the inner peripheral surface of the joint member so as to be parallel to and sandwich the inward protruding member. Since the guide plate is fixed, it is possible to easily perform positioning when arranging the joint member on the steel pipe, and it is possible to improve workability.

According to the joint structure for a composite structure of claim 4, a bottom slab having a hole through which the steel pipe penetrates is provided at the bottom of the joint member, and a hole edge of the bottom slab is provided. Since a filler is placed in the gap between the portion and the outer peripheral surface of the steel pipe that penetrates the hole, it is necessary to use a mold or the like when pouring concrete into the joint member. Therefore, it is possible to improve workability and greatly contribute to shortening the construction period.

According to the method for constructing a joint structure of a composite structure as claimed in claim 5, an outer side having a trapezoidal cross section whose lower side is longer than a plurality of upper sides on the outer peripheral surface near the upper end of the steel pipe. A first step of fixing the projecting members on the normal line at a predetermined interval in the circumferential direction, and an inward process having an outer surface parallel to the outer projecting member on the inner peripheral surface of the joint member made of a cylindrical body. A second step of fixing the projecting member to a position facing the outer projecting member, and an inward direction of the joint member so that outer surfaces of the outer projecting member and the inner projecting member are in contact with each other. A third step of inserting the upper end of the steel pipe into, and a plurality of reinforcing bars are spaced apart at a predetermined interval along the inner peripheral surface of the steel pipe so that the upper part projects from the upper end face of the steel pipe, The fourth step of fixing the steel beam to the outer peripheral surface of the joint member, and the filling material inside the steel pipe. Since the fifth step of filling and filling the inside of the joint part steel frame with the filling material is performed, the self-weight of the steel frame beam is such that the outer projecting member and the outer projecting member are surfaces. By being in contact with each other, it is smoothly transmitted to the steel pipe, and it becomes possible to omit the support work for the joint member when the steel beam is built. Further, when a floor surface is formed by using the steel beam, when a deck plate or a precast concrete slab is used as a floor material, it is possible to construct a frame structure of a composite structure without support.

According to the method for constructing a joint structure for a composite structure as set forth in claim 6, in the second step, the inner projecting member is formed on the inner peripheral surface of the joint member made of a cylindrical body. A pair of guide plates are fixed to both sides of the pair so as to be sandwiched in parallel with the inward projecting member, and the outer projecting member is placed between the pair of guide plates in a third step. Since the steel pipe penetrates the inside of the joint member, the positioning when the joint member is arranged on the steel pipe can be easily performed, and the workability can be improved.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a joint structure of a composite structure according to the present invention.

FIG. 2 is a diagram showing an outline of a steel pipe and a joint member of a composite structure according to the present invention.

FIG. 3 is a view showing a cross section of a joint structure of a composite structure according to the present invention.

FIG. 4 is a view showing a plane of a joint structure of a composite structure according to the present invention.

[Explanation of symbols]

1 Connection structure 2 Steel tube concrete columns 3 steel pipe 3a Upper end surface 4 Outward protruding member 4a outer surface 5 Connection member 5a upper end surface 6 cylinder 7 Inward protruding member 8 Guide plate 9 Bottom plate 9a inner edge 10 Steel beam 11 concrete 12 rebar 13 basket rebar 13a hoop muscle 14 Filling member 15 Filling material in the joint

Claims (6)

[Claims] 1. A joint structure of a composite structure building comprising a steel pipe concrete column of a filled steel pipe concrete structure in which concrete is filled inside the steel pipe, and a steel frame steel beam, wherein the steel pipe and the steel pipe A plurality of outwardly projecting members fixed on the normal line at a predetermined interval in the circumferential direction on the outer peripheral surface near the upper end, and along the inner peripheral surface of the steel pipe with the upper part projecting from the upper end surface of the steel pipe. And a plurality of reinforcing bars that are spaced apart at a predetermined interval, and are arranged so as to enclose the vicinity of the upper end portion to which the outer protruding member of the steel pipe is fixed, and the inner peripheral surface is located at a position facing the outer protruding member. Joint member made of a cylindrical body to which a side projecting member is fixed, the steel frame beam joined to the side surface of the joint member, and the filler filled inside the steel pipe and the joint member. And an outer protruding member fixed to the steel pipe. However, the lower side is longer than the upper side, and the outer surface has a trapezoidal cross section that is directed obliquely upward, and the inner protruding member fixed to the port member is an outer surface parallel to the outer protruding member. A joint structure structure for a composite structure having a trapezoidal cross section whose upper side is longer than its lower side, and wherein the outer side surfaces of the inner protruding member and the outer protruding member are in contact with each other. 2. The composite structure joint structure according to claim 1, wherein an upper end surface of the steel pipe projects above an upper end surface of the joint part member. Mouth structure. 3. The joint structure for a composite structure according to claim 1, wherein the inner peripheral surface of the joint portion member is parallel to the inward protruding member and is sandwiched therebetween. A joint structure for a composite structure, characterized in that a guide plate forming a sheet is fixed. 4. The joint structure for a composite structure according to claim 1, wherein the bottom portion of the joint member is provided with a bottom plate having a hole through which the steel pipe penetrates, A joint structure of a composite structure, wherein a filler is disposed in a gap between a hole edge portion of the bottom plate and an outer peripheral surface of the steel pipe that penetrates the hole. 5. A first outwardly protruding member having a trapezoidal cross section whose lower side is longer than its upper side, is fixed to the outer peripheral surface near the upper end of the steel pipe on the normal line at predetermined intervals in the circumferential direction.
The second step of fixing an inward projecting member having an outer side surface parallel to the outer projecting member to a position facing the outer projecting member on the inner peripheral surface of the joint member made of a cylindrical body. A step, a third step of inserting the upper end of the steel pipe into the inside of the port member so that the outer surfaces of the outer protruding member and the inner surface of the inner protruding member are in contact with each other, and The fourth step of fixing a plurality of rebars at predetermined intervals along the inner peripheral surface of the steel pipe so that the upper part protrudes from the end surface, and fixing the steel beam to the outer peripheral surface of the joint member, 5. A method for constructing a joint structure of a composite structure, comprising: a fifth step of filling the inside of the steel pipe with the filler and filling the inside of the joint portion steel frame with the filler. 6. The method for constructing a joint structure for a composite structure according to claim 5, wherein in the second step, the inner projecting member is provided on the inner peripheral surface of the joint member made of a cylindrical body. A pair of guide plates are fixed to both side portions of the pair so as to be parallel to and sandwich the inward protruding member, and in a third step, the outer protruding member is placed along the pair of guide plates. A method for constructing a joint structure of a composite structure, characterized in that the steel pipe is inserted into the inside of the joint member.