JPH08135017A - Connection member of column and beam - Google Patents

Abstract

PURPOSE: To facilitate a connection work, by forming a cylinder provided with a reinforcing part having a pierced hole in the axial direction in the inside, with cast steel as a unit and connecting it to a steel skeleton column and placing concrete to unify them after a steel skeleton beam has been fixed thereto. CONSTITUTION: A connection member of a steel skeleton column and a steel skeleton beam 4 is constituted of a cylindrical body 2 provided with a reinforcing member 3 having pierced hole 3e in the inside thereof and made of cast steel as a unit. A flange to be welded with the beam 4 can be protruded as a unit at the surface of the cylindrical body 2 and further, the sectional shape of the cylindrical body 2 is sequentially changed to facilitate the connection of columns with different sizes and shapes and beams with level differences. This connection member 1 is connected to a fitting position of the beam, of the steel skeleton column and the beam 4 is welded therewith and then concrete is placed on the surface of the column and the beam and in the inside of the column to unify them. The reinforcing part 3 in the cylindrical body 2 is precisely arranged to effectively disperse stresses and obtain a high strength connection member. In this way, an effective connection member can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a column / beam joining member, and more particularly to a joining member comprising a tubular body for joining a steel pipe column, a steel pipe concrete column, a reinforced concrete column and a steel beam. To do.

[0002]

2. Description of the Related Art A steel frame structure has a main frame part structurally,
It is a structure in which steel materials such as shaped steel, steel plates, and steel pipes are assembled.
It is used for high-rise buildings and large-span buildings because it is lightweight and has excellent durability and earthquake resistance. In addition, a steel frame structure is often used in which the columns are made of square steel pipes and the beams are made of I-shaped, H-shaped, and other shaped steel. The joints between the columns and the beams are the load of the beams themselves and the floor load. , Vertical load such as payload,
Also, it receives bending moment, axial force and shear force due to horizontal load such as earthquake and wind. Therefore, a joining member capable of joining to cope with this has been developed.

For example, Japanese Patent Laid-Open No. 4-289348 teaches a column-beam joining member as shown in FIG. This pillar
As shown in the figure, the beam joining member is provided with slits 23 at the portions of the peripheral wall of the square tube 21 where the flanges of the steel frame beam 22 are attached, and the slits 23 are provided at the corners of the peripheral wall of the square tube 21. A reinforcing plate 25 is formed by welding to support the two sides sandwiching the part in the rectangular tube 21.

[0004]

[Problems to be Solved by the Invention]
The beam connecting member is a rectangular tube, and a reinforcing plate is provided as a reinforcing part inside the rectangular tube to increase the strength of the structure.It takes time and labor to weld this reinforcing plate to the inner wall of the rectangular tube. Requires. In addition, for the joint members of columns and beams used for super high-rise buildings and high-seismic buildings, it is necessary to accurately arrange the reinforcing parts inside the rectangular cylinders in order to increase the structural strength. However, the work is difficult and welding defects are likely to occur because the inner space of the cylinder is narrow.

In recent years, concrete-filled steel pipe structures have been used as columns used in super high-rise buildings and high-quake-resistant buildings, in which the inside of steel pipe columns is filled with concrete to increase the resistance to bending moment and shearing force of the columns. However, in this case, the diaphragm in the steel pipe prevents the concrete from being filled, and a void is generated in the steel pipe. In particular, in the case of a beam having a step, since a large number of diaphragms are welded in the steel pipe, the filling property of concrete is poor.

Further, it is difficult and time-consuming to secure the positioning accuracy of the welding of the joining member and the pillar and the beam in the case of the pillar having a different shape and size or the beam having the step.

[0007]

DISCLOSURE OF THE INVENTION The present invention is intended to solve many of the problems of the prior art as described above, and does not require welding in the structure of the reinforcing portion, and does not require welding from columns or beams. To provide a pillar-beam joint member that has sufficient strength against stress, can be easily filled with concrete in a pillar member, and can be easily joined to a pillar having a different shape or size or a beam having a step. .

The pillar-beam joint member of the present invention has a cylindrical body as a basic structure. The cylindrical body includes a cylinder, a triangular cylinder, a square cylinder, a hexagonal cylinder, an octagonal cylinder, and the like. A through opening is provided in the reinforcing portion that supports the peripheral wall portion of the cylindrical body, and the reinforcing portion and the cylindrical body are integrally formed of cast steel. The reinforcing portion has various shapes and is arranged on all or part of the axial direction of the cylindrical body. Especially when it is arranged in a part,
The flange of the steel frame beam is arranged so as to face the mounting portion.

As a specific mode of the present invention, the tubular body is a rectangular tube, and the reinforcing portion and the opposite side plate and the tubular body peripheral wall support two parallel sides of the tubular body peripheral wall portion to each other in the rectangular tube. In the case where two sides sandwiching the corner portion of the portion are formed by either or both of adjacent side plates that support each other in the square tube, or the tubular body is a cylinder, and the reinforcing portion is the tubular body peripheral wall portion. Is formed by either or both of a cross plate that supports the cylindrical body passing through the axial center in the cylinder and a chordal plate that continuously supports the cylindrical peripheral wall portion in the cylinder, or the through opening portion. In the case of being formed by a large opening, a lattice-shaped opening, a honeycomb-shaped opening, a circular hole close-packed type opening, or the tubular body is a rectangular tube, the reinforcing portion has the wall thickness of the corner portion of the tubular peripheral wall portion as described above. In some cases, it may be formed of a thick portion that is thickened toward the center of the rectangular tube.

Further, in this column-beam joint member, as a joint portion with the column, an inclined surface for the groove is provided outwardly along the circumferential direction on the peripheral wall portion of the cylindrical body at the axial end of the cylindrical body. In some cases, the whole is integrally molded with cast steel. Further, a step formed by retreating the outer peripheral surface of the tubular body peripheral wall portion toward the center of the tubular body by at least the thickness of the tubular body peripheral wall portion is provided at the axial end portion of the tubular body, In some cases, it is integrally molded with cast steel.

Further, the column-beam joint member has a flange protruding outward from the peripheral wall of the cylindrical body as a joint with the beam, and is integrally formed of cast steel. It is molded. The free end of this flange may be provided with a beveled surface. Further, in some cases, the free end portion of the flange is provided with a step projecting outward on the one side surface of the flange so as to intersect with the axial direction of the tubular body, and is integrally molded with cast steel.

Also, in the case where the pillar-beam joining member is such that the cross-sectional shape in a plane orthogonal to the axial direction is continuously changed from one end to the other end of the axial end of the cylindrical body. is there. Further, the column-beam joining member may continuously change the cross-sectional area in a plane orthogonal to the axial direction from one end to the other end of the axial end of the cylindrical body.

[0013]

The column-beam joining member of the present invention has a tubular body as a basic structure, and the reinforcing portion in the tubular body is provided with a through opening, so that when the concrete is filled in the coupled columns. In addition, the fluidity of the concrete in the column / beam joining member is good, and the concrete is evenly filled between the connecting columns.

Further, the through opening allows the reinforcing bars arranged in the connected columns to be inserted into the column-beam joining member in series. Further, in the column / beam joining member of the present invention, the tubular body and the reinforcing portion are integrally molded of cast steel, and there is no welded portion or joining portion, so that the structure has uniform uniformity of material. And
Stress is not concentrated in one place.

Further, since the work of welding the reinforcing portion in the cylinder is not required, the reinforcing portion can be arranged in a dense shape in the cylinder. The reinforcing portion efficiently transmits the respective forces from the flanges of the columns and beams and the web. For example, when the tubular body is a rectangular tube, when joining rectangular tubular columns having the same shape and the same size, the vertical stress from the columns is sufficiently transmitted between the columns joined via the tubular peripheral wall portion. . The reinforcing portion of the rectangular tube supports opposite side plates that support two parallel sides of the tubular peripheral wall portion in the rectangular tube, and two sides that sandwich the angular portion of the tubular peripheral wall section in the rectangular tube. When formed on both sides of the adjacent side plate, on the other hand, the force from the web of the steel beam is transmitted to the opposite side of the cylindrical peripheral wall portion by the opposite side plate from the joint surface between the square tube and the beam web. Is transmitted to the steel beam web that joins to. On the other hand, the force from the flange of the steel beam is transmitted from the joint surface between the square tube and the beam flange to the adjacent side portion of the cylindrical peripheral wall portion by the adjacent side plate, and further, the force of the steel beam to be joined to this side portion. Transmitted to the flange.

Further, if the adjacent side plate is provided in a portion in the axial direction of the square tube so as to face the portion of the peripheral wall portion of the tubular body where the flange of the steel frame beam is attached, the force transmission action is as described above. Same as the case. Further, when the cylindrical body is a cylinder, when joining cylindrical columns of the same size, the vertical stress from the columns is sufficiently transmitted between the columns to be joined via the tubular peripheral wall portion. When the cylindrical reinforcing portion is formed by a cross plate and a chordal plate that support the cylindrical peripheral wall portion inside the cylindrical body, on the other hand, the force from the web of the steel beam is the bonding surface between the cylinder and the beam web. Is transmitted to the side opposite to the peripheral wall of the cylindrical body by the cross plate, and is further transmitted to the web of the steel beam joined thereto. On the other hand, the force from the flange of the steel beam is transmitted from the joint surface between the cylinder and the beam flange to the other side portion of the cylindrical peripheral wall portion by the chordal plate, and further to the flange of the steel beam joined here. It is transmitted one after another. Therefore, in this column / beam joining member, distortion due to stress is unlikely to occur at the joining portion.

Further, by forming the through-opening portion with a lattice-shaped opening, a honeycomb-shaped opening, and a circular hole dense type opening,
With respect to the force from the beam, uniform stress transmission distribution paths are formed in many directions in a plane orthogonal to the axial direction of the cylindrical body.
That is, the force is dispersed by the densely reinforced portion in the cylindrical body, and is sufficiently transmitted between the beams and columns to be joined. Therefore,
This pillar-beam joining member is also used in the direction orthogonal to the cylinder axis.
Strain hardly occurs in the axial direction of the cylinder.

Further, in the case where the tubular body is a rectangular tube, and the reinforcing portion is formed by a thick portion formed by increasing a wall thickness of an inner corner portion of the tubular peripheral wall portion toward a center of the rectangular tube. On the other hand,
The force from the steel beam flange is distributed to this thick part,
It is transmitted from the joining surface of the square tube and the beam flange to the adjacent side portions of the cylindrical peripheral wall portion. On the other hand, the vertical load from the columns is also dispersed in this thick portion and transmitted between the columns to be joined. Therefore, in particular, stress strain due to the load from the beam flange does not occur.

When the column-beam joint member of the present invention is provided with an outwardly inclined groove surface along the circumferential direction at the axial end portion of the cylindrical peripheral wall portion as a joint portion with the steel pipe column, The beveled surface functions as a groove during welding. Further, when a step is formed at the axial end of the tubular body by retreating the outer peripheral surface of the tubular peripheral wall portion toward the center of the tubular body by at least the thickness of the tubular peripheral wall portion, a steel pipe column to be joined Up to a position where the outer peripheral surface of the cylindrical peripheral wall portion retracted toward the center of the step and the inner peripheral surface of the steel pipe column are engaged with each other, and the end of the steel pipe column abuts the cylindrical peripheral wall portion step. It is introduced and set at a predetermined mounting position.

Further, the cylindrical body is provided with a flange projecting outward from the outer peripheral surface of the peripheral wall portion of the cylindrical body so as to intersect with the axial direction of the cylindrical body, and the flange of the steel beam joined to this flange is welded. It Further, a groove inclined surface is provided on the free end surface of the flange of the cylindrical body and functions as a groove during welding. Further, the free end of the flange is provided with a step projecting outward on one side surface of the flange so as to intersect with the axial direction of the cylinder, and the steel beam to be joined is By setting the flange on the step and introducing it to the position where it abuts the flange of the cylindrical body, it is set at a predetermined position.

When the cross-sectional areas and cross-sectional shapes of the ends of the columns to be joined are different, one end to the other end in the axial direction of the cylindrical body is corresponding to the cross-sectional area and the cross-sectional shape of the ends of the columns to be joined. By continuously changing the cross-sectional area and the cross-sectional shape in the plane perpendicular to the axial direction of the cylindrical body, stress is not concentrated in a part of the joint member of the pillar / beam, The vertical load of is well transmitted between the columns to be joined.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1A and FIG. 1B show the first embodiment of the present invention.
An example will be described. The pillar / beam joining member 1 is composed of a tubular body 2 and a reinforcing portion 3, and is wholly integrally formed by casting. The tubular body 2 has a square tubular shape, and is provided in the tubular peripheral wall portion 2a.
The reinforcing portion 3 is arranged.

The reinforcing portion 3 is continuous with the opposite side plate 3a arranged so as to support two parallel sides of the cylindrical peripheral wall portion 2a and the two sides sandwiching the corner portion of the cylindrical peripheral wall portion 2a. The adjacent side plate 3b, the cylindrical peripheral wall portion 2a, the adjacent side plate 3b, and the opposite side plate 3
and a through opening 3e between it and a. The end portion of the steel beam 4 made of H-shaped steel is joined to the outer surface of the cylindrical peripheral wall portion 2a of the joining member 1.

The steel beam 4 is composed of upper and lower flange portions 5 and 5 and a web portion 6, and is a cylindrical peripheral wall portion 2a of the joining member 1.
Butt weld to the outer surface of the. The opposite side plate 3a as the reinforcing portion 3 is provided so as to extend in the entire axial direction of the joining member 1, and the adjacent side plate 3b.
Are provided so as to extend in the axial direction from both ends of the joining member 1 to a position beyond the flange portion 5 of the steel beam 4. In FIG. 1B, the flange portion 5 of the steel beam 4 is
Is arranged in the center of the adjacent side plate 3b.

Thus, the opposite side plate 3a in the central portion of the reinforcing portion 3 is provided so as to face the web portion 6 of the steel beam 4 arranged on the side surface of the joining member 1 when the steel frame structure is formed. , Supports the force from the web portion 6 and disperses the entire joining member 1. Further, the phosphorus side plate 3b at the center of the reinforcing portion 3 is provided in the vicinity of the opposite side play and at the portion where the upper and lower flange portions 5, 5 of the steel frame beam 4 are joined, and the upper and lower flange portions 5 are formed. , 5 to support the force, and to disperse the entire joining member 1.

By integrally molding the entire joining member 1 by casting in this manner, it becomes unnecessary to join the peripheral wall portion and the reinforcing portion by bolts or welding, thereby keeping the quality of the joining member uniform. As a result, the installation work time of the reinforcing portion can be shortened. Further, stress concentration at the joint portion due to bolt joining or welding does not occur, and the steel frame structure becomes stable.

Further, by providing the through opening 3e in the reinforcing portion 3 so as to extend in the entire axial direction, the fluidity of the concrete in the joining member 1 at the time of filling the concrete is improved, and in addition to the lower column. The filling property of concrete was also improved. Further, by casting and molding the entire joining member 1, the opposite side plate 3a and the adjacent side plate 3b are both provided on the cylindrical peripheral wall portion 2a, and the strength is stable against a force from any direction. .

The joining member 1 shown in FIG. 1 (c) is
The joining member 1 used when the steel beams 4 and 4 facing each other have a vertical setting step is shown. The joining member 1 is provided with the cylindrical peripheral wall portion 2a, the opposite side plate 3a, and the adjacent side plate 3b, which are provided in the axial direction slightly longer than the step, and are long in the axial direction. The flange portions 5 and 5 can be joined together.

As described above, the opposite side plate 3a and the adjacent side plate 3b are provided so as to extend in the axial direction from both ends of the joining member 1, and the upper and lower flange portions 5 and 5 of the steel beam 4 are joined to each other. Since it can support up to the vicinity of, the horizontal diaphragm becomes unnecessary, and it becomes unnecessary to manufacture the joining member according to the set step between the steel beams 4 and 4.

FIG. 2 shows a second embodiment of the present invention. Similarly, the pillar / beam joining member 1 is integrally formed entirely of cast steel, and the tubular body 2 forms a cylinder.
The reinforcing portion 3 is configured. The reinforcing portion 3 includes an opposite side plate 3a arranged in the cylindrical body peripheral wall portion 2a so as to be continuous through the center of the cylindrical body peripheral wall portion 2a, and the cylindrical body peripheral wall portion 2a.
, A chordal plate 3d that is continuously extended around the connecting portion of the opposite side plate 3a, a through opening 3e between the cylindrical peripheral wall portion 2a and the chordal plate 3d, the cross plate 3c, and the cross plate 3c. And a through opening 3e between it and the chordal plate 3d.

The end portion of the steel frame beam 4 made of H-shaped steel is joined to the outer surface of the cylindrical peripheral wall portion 2a of the joining member 1. In this embodiment as well, as in the first embodiment, the cylindrical peripheral wall portion 2a of the joining member 1 and the opposite side play and 3a are joined together.
By providing the chordal plate 3d and the chordal plate 3d in the axial direction, it is possible to join the steel frame beams 4 and 4 having the set step.

3 (a) to 3 (d) show third to sixth embodiments of the joining member 1. This joining member 1 is similarly cast and integrally molded. Joining member 1 of FIG.
The cylindrical body 2 has a rectangular shape and has a rectangular through opening 3e having a transverse cross section and equally spaced in the vertical and horizontal directions so as to extend inside the cylindrical peripheral wall portion 2a in the entire axial direction or in some cases in a part thereof.
Are arranged to form a grid-shaped reinforcing portion 3.

The cylindrical body 2 of the joining member 1 shown in FIG. 3 (b) is in the form of a square cylinder, and is transverse to the inside of the cylindrical peripheral wall 2a so as to extend over its entire axial length, or in some cases a part thereof. The reinforcing portion 3 is configured by arranging the large circular through-opening portions 3e and the small circular through-opening portions 3e that are evenly spaced in the vertical and horizontal directions. Figure 3 (c)
The tubular body 2 of the joining member 1 of is a square tube, and has a regular octagonal shape in a transverse section with equal longitudinal and lateral intervals so as to extend inside the tubular peripheral wall portion 2a in the axial total length, or in some cases, partly. The through opening 3e and the small circular through opening 3e are arranged to form the reinforcing portion 3. In this joining member 1, the regular octagonal through opening 3e may be replaced by a regular hexagonal through opening 3e. Further, it has been confirmed that the function and effect are not changed even if the small circular through opening 3e is replaced by the diamond through opening 3e.

The cylindrical body 2 of the joining member 1 shown in FIG. 3 (d) is in the form of a square cylinder, and is transverse to the inside of the cylindrical peripheral wall 2a so as to extend over its entire axial length or, in some cases, part thereof. A regular hexagonal through-opening portion 3e is provided at equal intervals in the vertical and horizontal directions to form the honeycomb-shaped reinforcing portion 3. In this way, by forming the reinforcement part 3 peculiar to casting which was not possible with the reinforcement plate attached by welding or bolt connection, the connection member 1 can have a strong horizontal stress or vertical force generated in a column-beam connection part such as a high-rise building. It is effective in dispersing stress and prevents brittle fracture of the steel frame structure.

Further, by arranging the reinforcing portion 3 finely in the cylindrical peripheral wall portion 2a in the entire axial direction at equal longitudinal and lateral intervals in the transverse section, the column main bars can be accurately arranged. . FIG. 4 shows a seventh embodiment of the present invention. Similarly, the joining member 1 is integrally formed of cast steel, the cylindrical body 2 is a square cylinder, and the cylindrical peripheral wall portion 2a is
The itself acts as the reinforcing portion 3, and the reinforcing portion 3
Is a thick-walled portion 3f in which the wall thickness of the inner corner portion of the cylindrical peripheral wall portion 2a is increased, a large circular through-opening portion 3e provided in the center of the cylindrical peripheral wall portion 2a, and the through-opening portion 3e. It is composed of flat plate-shaped horizontal diaphragm portions 8 and 8 that project in the center direction at the upper and lower ends. Thus, a circular hole 8 centered on the axis of the cylindrical peripheral wall 2a is formed at the upper and lower ends of the through opening 3e.
a, 8a are formed.

On the outer peripheral surface of the cylindrical peripheral wall portion 2a, upper and lower flange portions 9 and 10 are formed to project at the same positions as the horizontal diaphragm portions 8 and 8 in the outward direction intersecting the axis of the cylindrical peripheral wall portion 2a. ing. The free end portion of the upper flange portion 9 is provided with a groove slope 9a on the upper surface and a step 9b on the lower surface, and the free end portion of the lower flange portion 10 is opened with a step 10b on the upper surface and a lower surface. A tip inclined surface 10a is provided.

The groove inclined surfaces 9a and 10a are provided on the upper surface side of the free end portion because they become downward welding when the steel frame beam is mounted on site. Further, in the center of each side of the free ends of the upper and lower flange portions 9 and 10, notch portions 9c, ..., 10c for receiving the web portion of the steel beam 4 toward the center of the cylindrical peripheral wall portion 2a.・ ・ Is provided. On the other hand, projecting portions 11 and 11 projecting outward in the axial direction are provided from both ends of the cylindrical peripheral wall portion 2a, and the outer peripheral surface of the tip portion is projected by an amount corresponding to the plate thickness of the cylindrical peripheral wall portion 2a. The steps 11a, 11
a is formed, and beveled surfaces 11b and 11b are formed along the circumferential direction at the outer peripheral roots of the projections 11 and 11.

In the joining member 1 thus constructed, the end portions of the flange portion 5 of the steel beam 4 are abutted against the groove slopes 9a, 10a provided on the flange portions 9, 10, and the step 9b, Butt welding is performed in a state of being mounted on 10b and joined to the outer surface of the cylindrical peripheral wall portion 2a. At this time, a prismatic positioning stopper 15 is joined to the inner peripheral surfaces of the ends of the upper and lower columns 12, 12 made of rectangular steel pipe,
The inner peripheral surfaces of the upper and lower columns 12, 12 are inserted into the outer peripheral surfaces of the steps 11a, 11a of the protrusions 11, 11 until the end surface of the positioning stopper 15 comes into contact with the end surface of the joining member 1, Ends of columns 12 and 12 and steps 11a and 1
The joint portion of the outer peripheral root portion of 1a is butt-welded.

In this way, the steps 11a, 11a joining the upper and lower columns 12, 12 are retracted to form a fitting surface with the inner circumference of the column, thereby facilitating the welding work of the column and improving the quality accuracy. planned. Further, the groove slopes 9a, 10a of the upper and lower flange portions 9, 10 and the groove slope faces 11b, 11b of the upper and lower protrusions 11, 11 act as a groove in welding dead, and Steps 9b and 10b and the protrusion 1
The steps 11a and 11a of 1 and 11 act as positioning of the backing metal and the joint surface for preventing the welding melt material from falling.

As described above, since the joint member 1 is provided with both the welding groove surface and the backing metal, the labor for providing the welding groove surface on the joint surface of the column or the beam is eliminated and the welding work is standardized. In addition, FIG. 5A and FIG.
The joining member 1 is an example and is used when there is a step between the beams of the steel beam 4.

The joining member 1 is integrally formed of cast steel, and in this case as well, the tubular body 2 has a rectangular peripheral wall 2a.
Functions as a reinforcing portion 3, and the reinforcing portion 3 is a thick portion 3 in which the wall thickness of the inner corner portion of the cylindrical peripheral wall portion 2a is increased.
f, the opposite side plate 3a which is continuous so as to be orthogonal to the four sides in the cross section of the cylindrical peripheral wall 2a, and the through opening 3e between the cylindrical peripheral wall 2a and the opposite side plate 3a. .

The cylindrical peripheral wall portion 2a is provided with projections 11 and 11 so as to project outward in the axial direction from both ends thereof. At the tips of the protrusions 11 and 11, stepped portions 11a and 11a are provided, which are recessed from the outer peripheral portion in the direction of the center of the cylindrical peripheral wall portion 2a by an amount corresponding to the plate thickness of the cylindrical peripheral wall portion 2a. The root has a slanted surface 11b along the circumferential direction,
11b is arranged in the entire axial direction of the cylindrical peripheral wall portion 2a.

In this way, the vertical stress from the column (not shown) is also transmitted to the entire joining member 1 by the cylindrical peripheral wall portion 2a and the opposite side plate 3a. 6 (a) to 6 (c)
Shows the ninth to eleventh embodiments. This joining member 1 is
It is used when the sizes of the upper pillar and the lower pillar (not shown) are different, and the cylindrical body peripheral wall portion 2a in which the cylindrical body 2 has a quadrangular pyramid shape, and the rectangular horizontal plate 13 at the upper end thereof,
The lower end of the horizontal plates 13 and 14 has a rectangular horizontal plate 14 which is one size larger than the horizontal plates 13.
Circular holes 13a and 14a are formed in the central portion of the axis of.

Then, the upper and lower horizontal plates 13 and 14
The upper and lower surfaces of the upper and lower surfaces are butt-welded and joined to upper and lower columns (not shown). In addition, here, the diagonal midpoint of the plane of each horizontal plate 13 and 14 is defined as the midpoint of each plate. Further, the midpoint of the upper and lower open ends of the cylindrical peripheral wall portion 2 coincides with the midpoint of the upper and lower horizontal plates 13, 14.

In the joining member 1 shown in FIG. 6 (a), since the midpoints of the upper and lower horizontal plates 13 and 14 are arranged on the same line perpendicular to the height direction, the cylindrical peripheral wall portion 2a is 4 toward the upper end. It has a pyramid shape. Thus, since the midpoints of the upper and lower horizontal plates 13, 14 of the joining member 1 are the same as the axes of the upper and lower columns (not shown) that are joined to the joining member 1, the joining member 1 is attached to the outer wall portion of the steel structure. It is suitable as a means for connecting internal columns that do not face each other.

Here, on the plane of the horizontal plate 13, an axis passing through the midpoint in parallel with one side of the horizontal plate 13 is defined as the X axis, and passing through the midpoint of the horizontal plate 13 and orthogonal to the X axis. The axis to be defined is defined as the Y axis. Figure 6 (b)
The joint member 1 shown in FIG. 1 has an axis line that passes through the midpoint of the horizontal plate 13 and is orthogonal to the plane, and an axis line that passes through the midpoint of the horizontal plate 14 and is orthogonal to the plane in either one of the XY axes. The cylindrical peripheral wall portion 2a is displaced, and only one surface thereof is parallel to this axial direction, and becomes a pyramid of a three-sided diaphragm toward the upper end. Therefore, it is suitable as a means for connecting the upper and lower columns of the side columns excluding the corner columns facing the outer wall of the steel structure.

Further, in the joining member 1 shown in FIG. 6 (c), an axis line passing through the midpoint of the horizontal plate 13 and orthogonal to its plane, and an axis line passing through the midpoint of the horizontal plate 14 and orthogonal to its plane. The axis is displaced in any one direction of the XY axes, and the perpendicular is displaced in both directions of the XY axes, and the cylindrical peripheral wall portion 2a is
The two surfaces are parallel to the vertical axis direction and form a pyramid of a two-sided diaphragm toward the upper end. Therefore, it is suitable as means for connecting the upper and lower pillars of the corner pillar facing the outer walls of the two surfaces of the steel frame structure.

As described above, when the cross-sectional shapes of the two pillars are different from each other, the cylindrical peripheral wall portion 2a of the joining member 1 is formed into a pyramid shape or a conical shape so that the upper and lower pillar members are connected without a step. The vertical stress generated at the joint between the column member and the joint member 1 is dispersed throughout the joint member 1. Further, by appropriately selecting these three types of joining members, it is possible to join the columns of all parts of the steel frame structure.

In these examples, the tubular body 2 of the joining member 1 has at least the same number of sides as the number of the steel beam 4 joined to the outer peripheral surface thereof, and has a triangular, pentagonal or hexagonal cross section. , Composed of an octagonal cylindrical wall 2a,
It can be a means for joining beams of various steel structures. FIG. 7 shows a twelfth embodiment of the present invention.

The joining member 1 includes an upper column 12 (not shown).
Is used when the cross-sectional shape of the lower column 12 is different, and is composed of the cylindrical body 2 and the reinforcing portion 3 and is integrally molded by casting. The cylindrical body 2 has a circular outer shape on the upper end surface and a square outer shape on the lower end surface, and its outer surface continuously changes from the upper end to the lower end. Further, the reinforcing portion 3 is arranged in the cylindrical peripheral wall portion 2a, and the opposite side plate 3a, the opposite side plate 3a, and the cylindrical peripheral wall which are arranged so as to pass through the center of the cylindrical peripheral wall portion 2a to be continuous. With the through opening 3e between the portions 2a.

By continuously changing the sectional shape of the cylindrical peripheral wall portion 2a in this manner, the upper column 12 and the lower column 12 are
When the cross-sectional shapes of are different, they can be connected.

[0052]

[Effect] As described above, since the pillar-beam joining member of the present invention is integrally formed by cast steel, the welding work is drastically reduced, and the labor of the work can be saved. In addition, this column / beam joining member itself does not have welding, and since the reinforcing part in the cylinder can be arranged with high accuracy, stress distribution is effective, resulting in a structure with high strength and weight reduction by selecting the reinforcing part. Can be achieved.

Further, when joining beams having steps, it is possible to deal with the pillar-beam joining member having the same shape as that of joining beams having no steps. Furthermore, since a through-opening is provided, it can be inserted into the column-beam joint member in a series when reinforcing bars are laid out in the column, and its filling property when filling the column with concrete. Since it is good, the structure has high strength.

The pillar-beam joining member of the present invention can simplify the joining work by providing a groove or a step at the end portion or outer peripheral surface of the cylindrical peripheral wall portion joined to the pillar or beam. As a result, assembly and welding accuracy can be secured. Further, pillars having different shapes and sizes and beams having steps can be easily joined.

[Brief description of drawings]

1A and 1B are views showing a joining member according to a first embodiment of the present invention, in which FIG. 1A is a cross sectional view and FIG. 1B is a cross sectional view taken along the line AA in FIG. 1A. FIG. 6C is a vertical cross-sectional view when there is a set step between the beams to be joined.

FIG. 2 is a cross-sectional view of a joining member according to a second embodiment of the present invention.

FIG. 3 is a plan view showing a joining member according to third to sixth embodiments of the present invention. FIG. 3A is a third embodiment, FIG. 3B is a fourth embodiment, and FIG. ) Is a diagram showing the fifth embodiment, and FIG. 8 (d) is a diagram showing the sixth embodiment.

FIG. 4 is a perspective view of a joining member according to a seventh embodiment of the present invention.

5A and 5B are views showing a joining member according to an eighth embodiment of the present invention, in which FIG. 5A is a horizontal sectional view and FIG. 5B is a vertical sectional view.

FIG. 6 is a perspective view showing a joining member according to ninth to eleventh embodiments of the present invention, wherein FIG. 6A is a ninth embodiment and FIG.
Is a diagram showing a tenth embodiment and FIG. 11 (c) is a diagram showing an eleventh embodiment.

FIG. 7 is a perspective view of a joining member according to a twelfth embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a conventional joining member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joining member 2 Cylindrical body 2a Cylindrical body peripheral wall part 3 Reinforcing part 3a Opposite side plate 3b Adjacent side plate 3c Cross plate 3d Chord plate 3e Through opening part 3f Thick part 4 Steel beam 5 Flange part 6 Web part 7 Backing metal 8 Horizontal diaphragm 8a Hole 9 Upper flange 9a Groove slope 9b Step 9c Cutout 10 Lower flange 10a Groove slope 10b Step 10c Cutout 11 Projection 11a Step 11b Groove slope 12 Pillar 13 Horizontal Plate 13a Hole 14 Horizontal Plate 14a Hole 15 Positioning Stopper 21 Square Tube 22 Steel Beam 23 Slit 25 Reinforcement Plate

Claims (12)

[Claims] 1. A column-beam joint member used for a steel structure and comprising a tubular body and a reinforcing portion for supporting the tubular peripheral wall portion inside the tubular body, wherein the reinforcing portion is provided with a through opening in the axial direction. A column-beam joining member, wherein the tubular body and the reinforcing portion are integrally molded of cast steel. 2. The pillar-beam joining member according to claim 1, wherein the tubular body is a rectangular tube, and the reinforcing portion supports two parallel sides of the tubular peripheral wall portion in the rectangular tube. Is formed by either or both of the opposite side plate and the adjacent side plate that supports the two sides sandwiching the corner portion of the tubular body peripheral wall portion in the square tube, and all or one of them in the axial direction of the square tube. A column / beam joining member, which is characterized in that it is arranged in a section. 3. The column-beam joining member according to claim 1, wherein the tubular body is a cylinder, and the reinforcing portion includes a cross plate that supports the tubular peripheral wall portion in the cylinder, and the tubular body. A column characterized in that it is formed of either or both of a chordal plate that supports a body peripheral wall portion in the cylinder, and is arranged in all or part of the axial direction of the cylinder.
Beam joining member. 4. The pillar-beam joining member according to claim 1, wherein the through-opening is formed from a large opening, a grid-like opening, a honeycomb-like opening, or a circular hole close-packed opening provided at the center of the reinforcing portion. A column / beam joining member characterized in that it is in a selected form. 5. The column-beam joint member according to claim 1, wherein the tubular body is a rectangular tube, and the reinforcing portion has a wall thickness of an inner corner portion of the tubular peripheral wall portion of the rectangular tube. It is characterized in that it is formed by a thick portion thickened toward the center and extends along the axial direction of the rectangular tube, and the through opening is a large opening provided in the center of the reinforcing portion. A joint member for columns and beams. 6. The pillar-beam joining member according to claim 1, wherein an outer peripheral inclined surface of the groove is provided at an axial end portion of the cylindrical peripheral wall portion. Characteristic pillar-beam joining member. 7. The column-beam joining member according to claim 1, wherein the outer peripheral surface of the cylindrical peripheral wall portion is provided at the axial end portion of the cylindrical body by at least the thickness of the cylindrical peripheral wall portion. A column / beam joining member characterized in that a step formed by retreating toward the center of the body is provided. 8. The column-beam joining member according to claim 1, wherein the cylindrical body has a flange protruding outward from the peripheral wall portion of the cylindrical body so as to intersect the axial direction of the cylindrical body. A column / beam joining member characterized by being integrally molded from cast steel. 9. The pillar / beam joining member according to claim 8, wherein a groove inclined surface is provided at a free end portion of the flange. 10. The column-beam joint member according to claim 8, wherein a free end portion of the flange projects outwardly on one side surface of the flange so as to intersect the axial direction of the cylindrical body. A pillar / beam joint member characterized by having steps. 11. The column / beam joining member according to claim 1, wherein the cross-sectional area in a plane orthogonal to the axial direction is continuously changed from one end to the other end in the axial direction of the tubular body. A column / beam joining member characterized by being provided. 12. The column-beam joining member according to claim 1, wherein the cross-sectional shape in a plane orthogonal to the axial direction is continuously changed from one end to the other end in the axial direction of the tubular body. A column / beam joint member characterized by being