JP2542279B2 - Joining method of main bar in wall type frame method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a construction method for a reinforced concrete structure, and more particularly to a method for joining beam main bars in a wall-type rigid frame structure.

(Prior Art) Generally, in the wall type rigid frame method, as shown in FIGS. 6 to 7, for example, a beam 16 and a beam 17 with a wall are joined to one wall pillar 15 from four sides. Therefore, it is necessary to study in advance the construction order of the beam main bars and the positional relationship of the main bars.

Then, after the reinforcement is finished, cast-in-place concrete is cast.

(Problems to be solved by the invention) However, in the above-mentioned wall-type rigid frame construction method, the main bar of the beam 16 and the main bar of the beam 17 with the wall intersect from all sides, so a great deal of labor and time is required for the study and construction. If the construction period has to be long and the distance between the reinforcing bars is very narrow, the flow of the concrete will become worse and voids will not be filled densely when the concrete is placed later. There was a drawback that I could not trust in quality assurance.

The present invention has been made in view of the above problems, the workability is improved in the wall-type rigid frame structure, the casting condition of the cast-in-place concrete is also good, and the joining of the beam main bars in the wall-type rigid frame structure with reliable quality is possible. The purpose is to provide a method.

(Means for Solving the Problem) The gist of achieving the object by solving the above problems of the method for joining main bars in the wall-type rigid frame method according to the present invention is
In the method of joining main bars in the wall-type rigid-frame method for reinforced concrete structures, the main beam bars that are anchored from the inside of the beam to the inside of the column ensure the anchoring length for the connection and do not exceed the center of the column. The main bars of the wall-attached beam, which are bent along the up-down direction and are arranged so as to face each other with the center of the column therebetween, and which are arranged in the direction orthogonal to the main beams of the beam, are arranged to face each other in the column portion. Is inserted into the gap of, the bar reinforcement of the wall-attached beam concerned and the beam reinforcement are arranged so as not to intersect with each other,
It consists in placing concrete and joining beams, columns, and beam with walls integrally.

(Operation) As described above, according to the method of joining main bars in the wall-type rigid frame construction method according to the present invention, the main bars of the beam to be joined to the column and the wall-attached beam are directly laid out in the direction orthogonal to each other. Since it does not intersect with, the work efficiency of reinforcing bar arrangement is improved, the rebar processing becomes easy, and the pre-assembly work becomes possible.

 Further, reinforcement work such as welding of the main bars is also unnecessary.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view when the present invention is implemented,
FIG. 2 is a vertical sectional view of the same.

The present invention arranges the main bars 2a (upper bar), 2b (bottom bar), 3a (upper bar), 3b (bottom bar) of the beam 2 and the wall-supported beam 3 on the column 1 in the end part of the beam 2 Main beam 2 anchored from inside to pillar 1
a, 2b secures the fixing length for joining (30 to 35d, d is the diameter of the reinforcing bar) and is about 90 ° along the vertical direction of the pillar 1 without exceeding the pillar center 1a of the pillar 1. It is bent and arranged with the pillar center 1a in between.

In this case, as the direction of bending the beam main bars 2a and 2b, the upper end bars 2a are bent downward along the vertical direction of the column 1,
An example of bending the lower end streak 2b upward is shown in FIG. 2, but it is not limited to this, and it does not prevent the upper end streak 2a from bending upward and the lower end streak 2b to bend downward. Absent.

Then, the main reinforcements 3a, 3b of the wall-attached beam 3 are arranged in the column 1 by being inserted into the gap formed by the bent main reinforcements 2a, 2b facing each other.

After that, in-situ concrete is poured into each of the pillar 1, the beam 2, and the wall-mounted beam 3 to join the beam 2, the pillar 1, and the wall-mounted beam 3 integrally.

The present invention can be similarly applied to the case where the slab and the beam are made of semi-PC (precast concrete) as shown in FIGS. 3 to 5.

Here, FIG. 3 is a plan view, FIG. 4 is a sectional view of the same, and FIG. 5 is a right side view. In order to construct the wall type rigid frame structure by making this half PC, the upper end streak 5 is attached to the half PC beam 4 in advance.

Then, in the pillar 7, concrete is placed under the beam, then after the required concrete strength is developed, the form is removed and the half-PC beam 4 is erected.
The fixing length for joining is secured in the same manner as in the above-mentioned case, and the pillar 7 is bent about 90 ° along the vertical direction without exceeding the pillar center 7a.

Then, the main reinforcements 8a, 8b of the wall-attached beam 8 are arranged by inserting them into a gap formed by the upper end reinforcement 5 and the lower end reinforcement 6 of the beam 4 bent in the column 7 being opposed to each other. .

After that, concrete is driven up to under the slab half PC board 11 to support the slab half PC board 11.

Further, since the upper end reinforcement 5 of the half-PC beam 4 cannot be dropped because the upper end reinforcement 5 of the half-PC beam 4 is pre-assembled, the strip reinforcement 9 is divided into left and right and wound around the main reinforcement of the column 7 to arrange them. In order to reinforce the divided stirrup 9, the horizontal reinforcing stirrup 10 is laid across the main bar of the column 7 so as to run parallel to the stirrup 9.

After that, the slab upper end reinforcement is arranged, and concrete is placed on the upper end of the slab and the pillar 7 and the upper end of each beam of the half PC beam 4 and the wall-attached beam 8 to integrate them.

(Effects of the Invention) As described above, the beam main bar for fixing the main bar joining method in the wall-type rigid frame construction method according to the present invention from the inside of the beam to the inside of the pillar secures the fixing length for the joining, and , The bar main bar that is bent along the up-down direction of the column and does not exceed the center of the column and is arranged so as to face the center of the column, and the beam main bar that is bent in the column section is arranged to face each other. Since it was decided that the beams, columns, and beam with walls will be integrally joined by inserting through the gap created by the above, the main bars of the beam and beam with walls do not intersect directly, so the concrete is dense. In addition to improving the reliability, the efficiency of reinforcing bar arrangement is improved, the processing of reinforcing bars is facilitated, and the work period required for reinforcing bars can be shortened.

Pre-assembly processing will also be possible, shortening the construction period and reducing costs.

Further, reinforcement work such as welding of the main bars is unnecessary, which reduces labor and improves safety.

Further, since it is not necessary to shift the vertical and horizontal positions of the main reinforcing bar, there is no waste in covering concrete.

[Brief description of drawings]

FIG. 1 is a plan view of a case where the present invention is implemented, and FIG.
FIG. 4 is a vertical sectional view thereof, FIG. 3 is a plan view according to another embodiment of the present invention, and FIG.
FIG. 7 is a right side view of the same, FIG. 6 is a plan view of a wall-type rigid frame structure according to a conventional example, and FIG. 7 is a perspective view showing a part of the conventional wall-type rigid frame structure. . 1 …… Column, 1a …… Center of center, 2 …… Beam, 2a …… Upper beam of beam, 2b …… Lower beam of beam, 3 …… Band beam with wall, 3a …… Upper beam of beam with wall, 3b ...... Lower end bar of beam with wall, 4 …… Half PC beam, 5 …… Upper end bar of half PC beam, 6 …… Lower end bar of half PC beam, 7 …… Column, 7a …… Column center, 8 …… Girder with wall, 8a, 8b …… Main bar, 9 …… Girder, 10 …… Horizontal reinforcing bar, 11 …… Slab half PC
Board.

Claims (1)

(57) [Claims] 1. A method of joining main bars in a wall-type rigid frame construction method for a reinforced concrete structure, wherein the beam main bars anchored from the inside of the beam to the column portion secure an anchoring length for the joining,
And, the main bar of the wall-attached beam, which is bent along the vertical direction of the pillar without crossing the center of the pillar, is arranged to face the center of the pillar, and is arranged in a direction orthogonal to the main bar of the beam, Beams, columns and walls are inserted through the gaps of the beam main bars arranged opposite to each other in the column portion, and are arranged so that the main bars of the beam-attached beam and the beam main bars do not intersect with each other and concrete is cast. A method for joining main bars in a wall-type rigid frame method characterized in that ancillary beams are integrally joined.