JPH04155028A - Pillar beam joining part construction - Google Patents

Abstract

PURPOSE:To enable perfect bolting without improving rigidity of beam joining parts by attaching beam joining metal fitting on respective side parts of the beam joining parts of a pillar, and bolting opposing beam joining metal fittings in the condition in which a plurality of long bolts being right angles to them are deviated by the diameter of the long bolt in the up or down direction. CONSTITUTION:A plurality of joining holes 4 are drilled on the positions attached with beam joining metal fittings 3 of respective side parts 1a of beam joining parts of a pillar 1. The joining holes 4 of the opposing side parts 1a are oppositely formed on the same positions, and the joining holes 4 of the adjoining side parts 1a are drilled deviating by the diameter of a long bolt 6 up or down. Further among the beam joining metal fittings 3, the opposing metal fittings 3 are attached in the same direction, and the adjoining metal fittings are mutually in the reverse direction. A plurality of long bolts 6 are ridingly provided between the opposing side parts 1a of the beam joining parts of the pillar 1. Hereby, the upper beds of the adjoining beams can be made in same height, and perfect bolting of joining nuts can be performed without improving rigidity of the beam joining parts.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is a method of manufacturing square steel pipes by using beam joining hardware such as spliff T hardware to be joined to the ends of steel beams and long bolts installed between them. This relates to a column-beam joint structure that connects columns and steel beams.

[Prior art and the problem to be solved by the invention] The joint between a square steel pipe column and a steel beam is connected to a splint T hardware or an end plate that is joined to the end of the steel beam, and the opposing joint hardware. The structure is constructed using long bolts that are inserted between steel pipes, and concrete is filled inside the steel pipes to ensure high rigidity and strength of the columns.
It has the advantage of being able to transmit the bolt axial force to the column.

However, in this joint structure, the long bolts intersect perpendicularly inside the column, resulting in the long bolts being arranged at different levels.As a result, there is a difference in level between the tops of the beams in the orthogonal directions, making it difficult to fit the deck slab, etc. There are cases.

In addition, the sides (flanges) of steel pipes have poor out-of-plane rigidity and may be deformed when axial force is applied to the bolts. Therefore, the final tightening of bolts requires the concrete to bear the reaction force inside the steel pipes. This will be done after filling is completed.
There are problems such as tightening the bolts, which requires time and effort.

This invention was made based on this background, and aims to propose a new joint structure that solves the above problems.

Means for Solving Cl1l] In order to achieve the above object, the column-beam joint structure according to the present invention attaches beam joint hardware to each side of the beam joint of the column, and attaches the beam joint hardware to each side of the beam joint of the column. The columns and beams are joined by bolting each of the opposing beam joining metal fittings using multiple long bolts installed perpendicularly in two directions between the opposing side surfaces of the beam joints. In this case, the long bolts in the two orthogonal directions are vertically shifted by the axial diameter of the long bolts and are straddled, and the beam joint part of the beam joint metal is straddled by the axial diameter of the long bolts. It is formed by protruding eccentrically in the vertical direction.

[Example] The present invention will be described below based on an illustrative example.

Figures 1 and 2 show the structure of the column-beam joint of a steel frame. In the figures, number 1 is a column made of square steel pipes, and number 2 is an H
It is a beam made of shaped steel.

At each side part 1"+1a of the beam joint of column 1, insert 7) T.
Beam joining hardware 3.3 such as hardware is attached.

Further, a plurality of joining holes 4, 4 are bored at positions where the beam joining metal fittings 3, 3 are attached to each of the side surfaces 1a, Ia.

Among the joining holes 4, the joining holes 4 on the opposing side surfaces 1a and Ia
．． 4 are formed facing each other at the same position, and the joining holes 4, 4 in the adjacent side surfaces 1a, Ia are vertically shifted from each other by the shaft diameter of a long port 6, which will be described later.

The beam joint hardware 3 is formed into a substantially T-shape including a fixed portion 3a and a beam joint portion 3b.

The fixing portion 3a is formed into a rectangular plate shape elongated in the vertical direction.

A plurality of joining holes 5.5 are bored at both upper and lower ends of the fixed portion 3a, corresponding to the joining holes 4, 4 of the pillar 1.

The beam joint portion 3b is horizontally protruded from the central portion of the fixing portion 3a at a position offset from the shaft diameter of a long bolt 6 to be described later on one end side in the vertical direction.

Therefore, regardless of whether the joining hardware 3 is attached to the side surface 1a of the column 1 in the forward or reverse direction, it can be attached with the beam joint 3b protruding at the same level.

Therefore, there is no difference in level between the beam tops of the adjacent beams 2.2.

The beam joint metal fittings 3.3 formed in this manner are separately attached to the upper and lower sides of the beam 2 so as to match the levels of the upper and lower flanges 2a, 2a.

Also, among the beam joint hardware 3, the opposing beam joint hardware 3.3
are beam joint hardware 3 attached in the same direction and adjacent to each other.
．． 3 are attached upside down to each other.

Between the opposing side surfaces 1a and 1a of the beam joint of the column 1,
A plurality of long bolts 6.6 are straddled.

The long bolt 6 is formed to be thicker than the inner diameter of the joint hole 4 of the column 1,
Male threaded portions 6a, 6a are formed at both left and right ends thereof.

The left and right male threaded portions 6a, 6a are continuously inserted into the joint hole 4 of the column 1 and the joint hole 5 of the beam joint hardware 3, and their tips completely pass through the joint hole 5.

A joining nut 7.
7 are each fastened together, and the joint nands 7 and 7 are each tightly tightened.

With this configuration, the beam joint metal fittings 3, 3 are integrally attached to the side surfaces 1a, la of the beam joint portion of the column 1.

And the beam joint portion 3b of the beam joint hardware 3,3.

3b, the ends of the upper and lower flanges 2a, 2a of the beam 2 are joined by welding or bolting.

In actual construction, the beam joining hardware 3 is attached to the end of the beam 2 in advance on the ground at a factory or construction site, and the joining to the column 1 is performed afterwards.

The long bolts 6.6 are installed perpendicularly across the beam joint of the column 1, and the joint holes 4.4 of the adjacent opposing side surfaces 1a, Ia
Since the long bolts 6 are drilled at positions shifted vertically by the shaft portion thereof, there is no risk of them colliding with each other.

In addition, since the long bolt 6 is formed to be thicker than the inner diameter of the joint hole 4 of the column 1, a stepped portion 6b is formed at the base end of the male threaded portion 6a so that the peripheral edge of the joint hole 4 is caught. 4
(see figure).

Note that this long bolt 6 is integrally formed with the stepped portions 6b, 6b.

In addition, instead of this long bolt 6, a combination of a long bolt 8 and a pipe 9 as shown in Fig. 5, or a pipe with 7-way threads IOa and 10a cut at both ends as shown in Fig. 6, may be used. 10 with bolts 11°11 attached.

Therefore, the stepped portion 6b of the long bolt 6 or the pipe 9.1
Since the bolt 0 can also function as a bank-up material when tightening the joint nut 7, the final tightening of the joint nut 7 can be performed even before filling the inside of the beam joint of the column 1 with concrete.

Further, among the joining holes 4, the joining hole 4 on the side into which the long bolt 6 is inserted is formed into a potbellied hole as shown in FIG. 8 so that the shaft portion of the long bolt 6 can also be inserted therein.

Furthermore, as shown in FIG. 9, if the direction of the bonding hole 4 is changed, the slip resistance increases.

Note that the joining hole 5 of the beam joining hardware 3 such as a splint T may be an ordinary round hole.

〔Effect of the invention〕

Since the present invention has the above configuration, it has the following effects.

■ Since the beam tops of adjacent beams can be made at the same height, problems with fitting slabs etc. can be solved.

In addition, since long bolts can be used as bank amplifier materials when tightening joints, there is no need to intentionally increase the rigidity of the beam joint by filling concrete inside the beam joint of the column. , it is possible to perform final tightening of 7 joints.

Therefore, the final tightening of the joining pads can be performed at the same time as erection, and construction can be streamlined.

■ Adjacent beams can be joined using one type of beam joining hardware, making parts management easy and extremely economical.

[Brief explanation of drawings]

Figures 1 to 9 show an embodiment of the present invention. Figure 1 is a cross-sectional view of a column-beam joint of a steel frame structure, and Figure 2 is a cross-sectional view taken along line A-A in Figure 1. 3 is a plan view of the joint hardware showing the arrangement of the beam joint hardware; FIGS. 4, 5, and 6 are side views of the long bolts; FIGS. 7, 8, and 9. The figure is a partial side view of a column showing the shape of a joining hole formed in the column. 1...Column, 2...Beam, 3...Beam joining hardware, 4.5
...Joining hole, 6...Long bolt, 7...Joining nut, 8...Long bolt, 9.10...Pipe, 11...
·bolt.

Claims (1)

[Claims] (1) Attach beam joint hardware to each side of the beam joint of the column, and place the beam joint hardware in two directions perpendicularly between the opposing side parts of the beam joint for each opposing beam joint. In a column-beam joint structure in which a plurality of long bolts are installed across a column and are bolted together, the long bolts perpendicular to the two directions are vertically moved up and down by the axial diameter of the long bolts. A column-beam joint structure, characterized in that the beam joint metal fittings are arranged astride in the vertical direction, and the beam joint part of the beam joint hardware is eccentrically provided in the vertical direction and protrudes by the axial diameter of the long bolt. .