JPH06264511A - Pressure joining work method for post and beam - Google Patents

Abstract

(57) [Summary] [Purpose] It is no longer necessary to place concrete on-site for pillars,
In the case of a PC column, a column / beam crimping method in which the column and the panel zone are divided is provided. [Structure] A sheath 5 is set inside a steel pipe 2 that is integrally connected to a pair of upper and lower horizontal diaphragms 1, and the sheath 5 of a column / beam connection unit A filled with concrete 6 projects to the stigma of a PC column B. The unit A is set on the stigma by inserting the PC steel rod 7 of the same column, the PC steel rod 7 is tensioned at the upper end of the unit A to inject grout into the sheath 5, and thus the unit is attached to the stigma. Unit A
The steel beam S is joined to the horizontal diaphragm 1 of.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for crimping and joining a PC column and a steel beam.

[0002]

2. Description of the Related Art When a conventional column a has an RC structure and a beam b'has a steel frame structure, a steel pipe i is wound in advance on the RC column, and a cast-in-place concrete is cast on the column to form a column. The bracket j protruding outward is joined to the web and the flange of the steel beam b'through the attachment plate k and the high-strength bolt m (see FIG. 1).
3) The horizontal diaphragm n joined to the steel pipe i and the flange of the steel beam b'are joined by the attachment plate k and the high-strength bolt m, and the joining plate j protruding from the steel pipe is attached to the web of the steel beam by the high-strength bolt. joined via m. (See Figure 14)

[0003]

According to the above-mentioned conventional method, since the pillar is cast on site, it has been desired to simplify the site work and shorten the construction period. The present invention has been proposed in view of the above problems of the prior art, and the purpose thereof is to eliminate the need for on-site concrete pouring, and in the case of PC pillars, pillars in which the pillars and panel zones are divided. The point is to provide a crimping and joining method for beams. This also allows the pillar panel zone and the S-beam to be integrally joined to the pillar.

[0004]

In order to achieve the above-mentioned object, according to the column / beam crimping bonding method according to the present invention, a PC
In the method of crimping the columns and beams to the joint between the column and the steel beam through the connection unit, set the sheath for inserting the steel rod inside the steel pipe that is integrally connected to the horizontal diaphragm of the upper and lower sides, and Pillars filled with
After inserting the steel rod protruding from the stigma of the PC column into the sheath inside the beam connecting unit, setting the column / beam connecting unit on the stigma, and tightening the steel rod at the upper end of the unit. The grout is injected into the sheath in the unit.

[0005]

According to the present invention, as described above, the upper and lower diaphragms are integrally connected through the steel pipe, the sheath for inserting the steel rod is set inside the steel pipe, and the concrete is filled into the concrete portion. PC in which a steel pipe concrete column / beam connection unit in which a sheath is embedded is manufactured in advance and the sheath in the unit is projected to the stigma of the PC column.
The unit is set by inserting it into a steel rod such as a steel rod or a reinforcing bar, tensioning the steel rod at the upper end of the unit, and then injecting grout into the sheath to integrally attach the unit to the stigma. It is a thing.

After the column / beam connecting unit is integrally joined to the PC column as described above, the upper and lower flanges of the steel beam are joined to the PC column through the upper and lower diaphragms of the unit to form a frame structure. .

[0007]

The present invention will be described below with reference to the illustrated embodiments. A column / beam connecting unit A is a web 4 in which upper and lower horizontal diaphragms 1 are integrally connected to steel pipes 2, and bolt holes 3 are arranged between the protruding ends of the respective horizontal diaphragms 1 and the steel pipes 2. Is fixed, a sheath 5 for inserting a steel rod is set in the steel pipe 2, and concrete 6 is filled therein.
(See FIG. 1) B is an RC-made PC column, and a PC steel rod 7 is projectingly provided from the stake. (Refer to FIG. 2) The column / beam connection unit A is hung on the PC column B, set on the PC column B, and the PC steel rod 7 makes a primary tension. In the figure, 8 and 9 are a temporary tightening nut and a washer, respectively. (See FIGS. 3 and 4) Next, as shown in FIG. 5, a tension bar 11 for secondary tension is attached to the PC steel rod 7 via a connecting coupler 10, (see FIG. 5), and then a column / beam connecting unit. A center hole jack 13 for secondary tension is set in A via the jack chair 12, and the piston 1 of the jack 13 is set.
4, the tension bar 11 is connected via a nut 8 ′, the tension bar 11 is tensioned by the jack 13 and the PC steel rod 7 is tensioned via the connection coupler 10, and then a hand is put between the jack chairs 12. Donut 8
The column / beam connection unit A by tightening
Is crimped onto a PC column, and grout is injected into the sheath 5. (Refer to FIG. 6) After the crimping of the lower PC pillar B and the pillar / beam connection unit A is completed in this way, the PC steel rod penetrating coupler 15 of the upper PC pillar is attached to the PC steel rod 7 of the PC pillar B. (Refer to FIG. 7) The upper PC pillar B'is installed and the PC of the upper PC pillar B'is
The steel rod 7 is joined via the coupler 15. The steel beam S is joined to the column / beam connecting unit A by tightening the web 4 of the unit A and the web of the steel beam S with a joining plate 16 and high-strength bolts 17.
(Refer to FIG. 8) In the figure, reference numeral 18 denotes a concave portion provided in the upper PC pillar B ', into which the coupler 15 is fitted.

FIG. 9 shows a state in which the PC column B and the steel beam S are pressure-bonded to each other through the single column / beam connection unit A, and FIG. 10 is a state where the steel beam S and the column / beam are connected. The pressure-bonded joint state of the pillar and the beam when the connection unit A and the connection unit A are integrated is shown.

[0009]

As described above, the method of crimping and joining the pillar and the beam according to the present invention is such that the steel pipe is integrally connected to the upper and lower horizontal diaphragms, and the sheath for inserting the steel rod is set inside the steel pipe. The column / beam connection unit is manufactured separately from the column / beam, and the steel protruding from the stigma of the PC column is inserted into the sheath inside the unit, and the unit is set on the stigma. After tightening the steel rod at the upper end, by pouring grout into the sheath inside the unit, the joint between the column and beam is made into an integral unit consisting of steel pipe and concrete, so there is no need to place concrete on site. , The prefabricated rate will be high and the construction period will be shortened.

Further, by dividing the PC pillar and the panel zone, the weight of the PC pillar is reduced, the transportation and handling are simplified, and the method shown in FIG. 10 can be adopted.

[Brief description of drawings]

FIG. 1 is an elevation view of a column / beam connection unit.

FIG. 2 is an elevation view showing a joining end portion of a PC column.

3 is a plan view showing a state in which a pillar / beam connection unit is set on the stigma of a PC pillar, and is a view taken along the line YY in FIG.

4 is a view taken along the line XX of FIG.

FIG. 5 is an elevation view showing a state in which a tension bar for secondary tension is attached to the stigma.

FIG. 6 is an elevational view showing a state in which a PC steel rod is tensioned to crimp the connection unit to a column and grout is injected into the sheath of the unit.

FIG. 7 is an elevational view showing a mounting state of a PC steel rod connecting coupler of an upper pillar after the mounting of the lower pillar and the unit is completed.

FIG. 8 is an elevational view showing a state where the upper column is built and the PC steel rods of the upper and lower columns are joined by a coupler.

FIG. 9 is an elevational view showing a state in which a PC column and a steel frame beam are joined by using the column / beam connecting unit as a single unit.

FIG. 10 is an elevational view showing a state where the unit and the steel beam are integrated to join the PC column and the steel beam.

FIG. 11 is an elevational view showing an example of a conventional method.

FIG. 12 is an elevational view showing another example of the conventional method.

[Explanation of symbols]

 A Column / beam connection unit B PC column B'Upper PC column S Steel beam 1 Horizontal diaphragm 2 Steel pipe 3 Bolt hole 4 Web 5 Sheath 6 Concrete 7 PC steel rod 8 Temporary tightening nut 9 Washer 10 Coupler for tension bar connection 11 Tension bar 12 Jack chair 13 Center hole jack 14 Piston 15 PC steel rod insertion coupler for upper PC pillar 16 Joint plate 17 High-strength bolt 18 Recess 19 Joint plate between steel beams

Claims (1)

[Claims] 1. A sheath for inserting a steel rod inside a steel pipe integrally connected to a horizontal diaphragm having a pair of upper and lower horizontal diaphragms in a method of crimp-bonding a pillar / beam to a joint between a PC column and a steel beam through a connection unit. Set the column / beam connection unit with concrete, and insert the steel rod protruding into the stigma of the PC column into the sheath inside the unit, and set the column / beam connection unit on the stigma. A column / beam crimping and joining method characterized in that after the steel rod is tensioned at the upper end of the unit, grout is injected into the sheath of the unit.