JPH04297641A - Column/beam jointing section and column/beam jointing shell - Google Patents

Abstract

PURPOSE:To enable the carrying property of members to be improved, and enable the members to be easily jointed with bolts in site, and realize the rigid jointing of high precision and strength, on the column/beam jointing section of steel frame rigid- frame construction. CONSTITUTION:Into the upper end of a square steel pipe column 2' on a lower side, a column/beam jointing thick-shell 3 with a lower end guide plate 9 to be externally fitted on is inserted, and the upper end jointing end section of the square steel pipe column 2' and a recessed section 11 on the lower surface side of a parting plate 10 are fitted on each other. In the same manner, with a square steel pipe column 2 on an upper side, the counter side of the steel/beam jointing shell 3 is convered, and the lower end jointing end section of the square steel pipe column 2 and the recessed section 11 on the upper surface side of the parting plate 10 are fitted on each other. With high tensile bolts 4, the bolt hole 13 of the end plate 12 of an H-shape steel beam end section and the bolt holes 7 of the square steel pipe columns 2, 2' are penetrated, and the bolts 4 are spirally fitted on the screw holes 6 of the column/beam jointing shell 3. A space between the column/beam jointing shell 3 and the square shape steel pipe columns 2, 2' is filled up with grout material 5, and rigidity at jointing sections is enhanced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a column-beam joint in a steel rigid-frame structure consisting of a square steel pipe column and an H-shaped steel beam, and to a column-beam joint tube used for the joint.

0002

2. Description of the Related Art Conventionally, there are the following methods for rigidly connecting a square steel pipe column and a steel beam such as an H-shaped steel beam.

[0003] ■ A method in which a joint bracket is welded and fixed to the side surface of the joint of a square steel pipe column, and a steel beam is bolted to the joint bracket on site (see Japanese Utility Model Application No. 60-23508).

■ A method of directly welding a square steel pipe column and a steel beam.

[0005] ■ A beam joint cylinder with a thicker wall than a rectangular steel pipe column is used for the column-beam joint, and the upper and lower columns and the beam joint cylinder are butt welded, and the steel beam is threaded onto the beam joint cylinder. A method of joining with force bolts (see Japanese Patent Publication No. 61-58620).

[0006] ■ A rectangular cylindrical inner member is inserted into the vicinity of the joint between the upper and lower rectangular steel pipe columns, and a bolt is screwed into a nut that is non-rotatably and freely attached to the inner member,
Method for joining steel beams with bolts (Japanese Patent Application Laid-open No. 63-25154
(See Publication No. 0).

[0007]

However, the above-mentioned prior art has the following problems.

[0008] When joining a square steel pipe column and an H-shaped steel beam via a bracket, welding of the bracket requires advanced welding technology that does not cause weld defects, and its safety requires X-ray photography of the welded part. etc., confirmation is required. Furthermore, when transporting from a factory to a construction site, the bracket takes up a large amount of transport space, reducing transport efficiency and may damage the joining bracket.

[0009] Direct welding of columns and beams requires advanced welding techniques and high construction accuracy, making it difficult to obtain reliability as a structural material at construction sites where work tends to be complicated.

[0010]Beam connection Joining the cylinder and the column not only requires advanced welding technology at the factory, but also
There is a problem with machining accuracy because the machining accuracy required for housing pillars is high, such as axial center accuracy and bending.

[0011] ■ The method of inserting a rectangular cylindrical inner member near the joint of the rectangular steel pipe column requires a large number of parts for attaching nuts, etc., making machining difficult, causing problems with accuracy, and problems with the connection between the rectangular steel pipe column and the inner insert. There are problems such as looseness of parts.

[0012] The present invention is an attempt to solve the above-mentioned problems in the prior art, and it is easy to transport, and a square steel pipe column and an H-shaped steel beam can be easily joined with bolts instead of welding. Another object of the present invention is to provide a column-to-beam rigid joint structure with improved precision and strength of the steel structure, and a column-beam joint tube used therein as a joint member.

[0013]

[Means for Solving the Problems] Hereinafter, an outline of a beam-column joint and a beam-column joint of the present invention will be explained using reference numerals in the drawings corresponding to the embodiments.

The column-beam joint of the present invention connects the upper and lower square steel pipe columns 2.
, 2' and the H-shaped steel beam 1 are bolted together. At the column-beam joint, the connection end of the upper and lower square steel pipe columns 2, 2' has a wall thickness that is thicker than that of the square steel pipe columns 2, 2'. Column beam joint tube 3
are fitted. The bolt connection of the H-shaped steel beam 1 is the H-shaped steel beam 1.
A tightening bolt such as a high-strength bolt 4 is inserted into the column-beam joint tube 3 through the bolt hole 13 of the end plate 12 provided at the end of the column and the bolt hole 7 provided at the corresponding position of the upper and lower square steel pipe columns 2, 2'. This is done by screwing into screw holes 6 provided at corresponding positions.

[0015] Furthermore, the diameter of the square steel pipe columns 2, 2' is 150 m.
m or more, use a column-beam joint tube 3 whose outer diameter is sufficiently smaller than the inner diameter of the square steel pipe columns 2, 2', and between the column-beam joint tube 3 and the square steel tube columns 2, 2'. The gap is filled with grout material 5 to ensure the integrity and rigidity of the joint. As the grout material 5, non-shrinkage mortar, epoxy resin, or the like can be used, for example.

The column-beam joint cylinder 3 of the present invention is used for the above-mentioned column-beam joint, and has a wall thickness similar to that of the square steel pipe column 2.
, 2', a plurality of screw holes 6 are formed at predetermined positions of a cylinder with a square cross section thicker than 2', and square steel pipe columns 2, 2 are formed at the upper and lower ends.
A guide plate 8 having an outer diameter approximately equal to the inner diameter of ',
9, and a partition plate 10 is provided at the connection position of the upper and lower square steel pipe columns 2, 2' in the longitudinally intermediate portion. Furthermore, fitting recesses 11 are formed on the upper and lower surfaces of the outer peripheral part of the partition plate 10 to fit into the connection ends of the upper and lower square steel pipe columns 2 and 2'. It is possible to match the alignment with high precision.

[0017] This column-beam joint cylinder 3 is made of cast metal, square steel pipe, or the like. Furthermore, by making the wall thicker than the connected square steel pipe columns 2 and 2', it is possible to form a rigid joint and to form a screw hole 6 for screwing a tightening bolt.

[0018]

[Embodiment] Next, the illustrated embodiment will be explained.

FIGS. 4(a) and 4(b) show a column-beam joint tube 3 used in the embodiment shown in FIG. ' and thicker than the square steel pipe columns 2, 2'. A plurality of screw holes 6 are formed at predetermined positions on the surface in the direction in which the H-shaped steel beam 1 is attached, and high-strength bolts 4, which will be described later, can be screwed into the screw holes 6.

Furthermore, guide plates 8 and 9 are provided at the upper and lower ends of the column-beam joint tube 3, which also serve as sealing members when filling grout material 5, which will be described later. It serves as a guide member when inserted into the joint end of the square steel pipe columns 2, 2'.

Furthermore, H in the state where the column and beam are joined
In a portion located on the central axis of the shaped steel beam 1, a fitting recess 11 is formed on the upper and lower surfaces of the outer periphery for coaxially guiding and fitting the upper and lower square steel pipe columns 2, 2', respectively. Partition plate 1
0 is set.

In FIGS. 4(a) and 4(b), reference numeral 15 indicates a through hole for filling the grout material 5 beyond the partition plate 10. As shown in FIG.

FIGS. 1 and 2 show an embodiment of the column-beam joint of the present invention in which H-shaped steel beams 1 are attached in two directions. Note that the left half of FIG. 1 shows the surface to which the H-shaped steel beam 1 on the left side of the figure is attached, rotated by 90 degrees.

As shown in the figure, a column-beam joint tube 3 similar to that shown in FIGS. 4(a) and 4(b) is inserted inside the joint of the H-shaped steel beam 1 of the square steel pipe columns 2 and 2'. However, the screw holes 6 are formed only on the two sides in the direction in which the H-shaped steel beam 1 is attached).

To connect the square steel pipe columns 2 and 2', first insert the column-beam joint cylinder 3 into the upper end of the lower square steel pipe column 2' while circumscribing the guide plate 9, and then connect the upper end of the square steel pipe column 2'. The end portion and the recess 11 on the lower surface side of the partition plate 10 are fitted together. Thereafter, in the same manner, the upper square steel pipe column 2 is placed on the opposite side of the column-beam joint cylinder 3, and the lower end connecting end of the square steel pipe column 2 and the partition plate 1
0 and the recess 11 on the upper surface side.

On the other hand, an end plate 12 thicker than the H-shaped steel beam 1 is welded to the end of the H-shaped steel beam 1, and a plurality of high-strength bolts 4 are inserted into the bolt holes 1 of the end plate 12.
3 and square steel pipe columns 2, 2' through the bolt holes 7 of the column-beam joint cylinder 3, and tightening them, the H-beams are attached to the beam joints of the square steel pipe columns 2, 2'. Beam 1
The ends of are joined.

When the square steel pipe columns 2, 2' have a size of about 150 mm or less, there is almost no gap between the column-beam joint cylinder 3 and the square steel pipe columns 2, 2', and the high-strength bolts 4 are used to connect the column-beam joint cylinder. 3 and the square steel pipe columns 2, 2' should be brought into close contact with each other.

Further, when the square steel pipe columns 2, 2' are about 150 mm or more in size, it is desirable to leave a gap of about 10 mm or more, for example, and inject a grout material 5 such as non-shrinkage mortar or epoxy resin into this gap. . After the injected grout 5 hardens, the H-shaped steel beam 1, the upper and lower rectangular steel pipe columns 2, 2', and the column-beam joint tube 3 are further integrated into the column-beam joint where they are tightened with high-strength bolts 4 to form a rigid joint. form a joint.

In the figure, reference numeral 14 indicates an injection port for injecting the grout material 5.

FIG. 3 shows another embodiment in which H-shaped steel beams 1 are attached in four directions.

[0031]

Effects of the Invention The present invention connects a square steel pipe column and an H-shaped steel beam using the above-mentioned column-beam joint tube and bolts, and has the following effects.

[0032] ■ There is no welding at the construction site, and workability at the site is good.

(2) Column-Beam Connection The cylinder, the square steel pipe column, and the H-shaped steel beam can be joined with high precision, and a reliable rigid joint can be formed.

[0034] Since it is assembled as a single item on-site, it is easy to transport and is less likely to be damaged during transport.

[Brief explanation of drawings]

FIG. 1 is an exploded view showing an embodiment in which a beam is attached in two directions; the right half is a sectional view, and the left half is an elevational view in a direction rotated by 90 degrees (the surface on which the beam is attached).

FIG. 2 is a sectional view taken along line AA in FIG. 1;

FIG. 3 is a horizontal sectional view showing an embodiment in which beams are attached in four directions.

[Fig. 4] Shows the column-beam joint tube 3 used in the example of Fig. 3, (a) is an elevation view (the right half is a sectional view), (b)
is a BB sectional view of (a).

[Explanation of symbols]

1...H-shaped steel beam, 2...square steel pipe column, 3...column beam joint tube, 4...
High-strength bolt, 5... Grout material, 6... Screw hole, 7... Bolt hole, 8, 9... Guide plate, 10... Partition plate, 11... Recess, 12... End plate, 13... Bolt hole, 14... Grout material Note Entrance, 15...through hole

Claims (3)

[Claims] Claim 1: A column-beam joint cylinder made of a cylinder with a square cross section that is thicker than a square steel pipe column is fitted into the connecting ends of the upper and lower square steel pipe columns, and a tightening bolt is attached to the end of the H-shaped steel beam. The upper and lower rectangular steel pipes are screwed through the bolt holes provided in the end plate provided in the end plate and the bolt holes provided in the corresponding positions of the upper and lower rectangular steel pipe columns, and screwed into the screw holes provided in the corresponding positions of the column-beam joint cylinder. A column-beam joint, characterized in that a column and the H-shaped steel beam are joined. 2. The column-beam joint tube has an outer diameter sufficiently smaller than the inner diameter of the square steel pipe column, and includes guide plates that also serve as sealing members provided at the upper and lower ends of the column-beam joint tube, and a longitudinally intermediate portion. 1. A gap between the column-beam joint cylinder and the square steel pipe column, which is sandwiched between partition plates provided at upper and lower square steel pipe column connection positions, is filled with grout material.
Column-beam joint as described. 3. A guide plate in which a plurality of screw holes are formed at predetermined positions in a cylinder having a rectangular cross section, the wall thickness of which is thicker than that of the rectangular steel pipe column, and the upper and lower ends thereof have an outer diameter approximately equal to the inner diameter of the rectangular steel pipe column. A partition plate is provided at the connection position of the upper and lower square steel pipe columns at the longitudinally intermediate portion, and a fitting recess that fits into the connection end of the upper and lower square steel pipe columns is formed on the upper and lower surfaces of the outer periphery of the partition plate. A column-beam joint tube characterized by: