JPH0642036A - Anchoring method of beam in wall type rigid frame construction - Google Patents

Abstract

PURPOSE:To execute effective work without restricting order of arrangement in a wall type rigid frame construction and, at the same time, to improve filling efficiency of concrete in a column to promote quality of the construction. CONSTITUTION:Each of the lower end reinforcing bars 5a of precast concrete beams 5 mounted in opposition to both ends of the head section of a column 1 in a wall type rigid frame construction ensures a joining anchor length and is bent at this side from the center line of the column to form a gap section 5b to place reinforcement, and main reinforcement 4a of a wall beam 4 in an earthquake resisting wall 2 is inserted into the gap section 5b to place reinforcement, and the upper end reinforcing bars 5c of the precast concrete beams 5 are also inserted to place reinforcement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam fixing method for a wall type rigid frame structure.

[0002]

2. Description of the Related Art In a wall-type rigid frame structure in which the girder direction is a flat wall column of the same size as the beam width and the beam-to-beam direction is an earthquake-resistant wall without a beam type, if the beam is a precast concrete beam, As shown in 14, it is necessary to arrange the end portions of the lower end reinforcements 10a of the precast concrete beams 10 so as to extend beyond the center line of the column 20 and overlap each other. Therefore, the lower end bar 10a of the precast concrete beam 10 is
And the main reinforcement 40a of the wall beam 40 of the earthquake-resistant wall 30 are orthogonally reinforced, and the upper end reinforcement 10b of the precast concrete beam 10 which is reinforced through is also orthogonally reinforced with the main reinforcement 40a of the wall beam 40 and precast concrete. The beam 10 is fixed.

[0003]

However, in the beam fixing method as described above, the lower end bars of the precast concrete beams facing each other in the column overlap each other, and the main bars of the precast concrete beam and the wall beams of the earthquake-resistant wall are Since the main bars overlap with each other, the order of bar arrangement is restricted and efficient work cannot be performed.In addition, the space between the reinforcing bars cannot be sufficiently secured in the column, so the concrete fillability is poor and voids occur. There was a risk that the quality of the product would deteriorate. The present invention has been made in view of the above problems, and an object thereof is to perform efficient work in a wall-type rigid frame structure without restriction of the bar arrangement order and to fill concrete in columns. To improve the quality of the structure.

[0004]

Means for Solving the Problems The gist of the present invention for achieving the above object is to fix a lower end streak of a precast concrete beam oppositely mounted on both ends of a column in a wall type rigid frame structure for joining. Secure the length and bend it before the center line of the column to arrange the reinforcement, and arrange the main reinforcement of the wall beam of the orthogonal earthquake-resistant wall through the gap formed by the lower end reinforcement of the main reinforcement of the precast concrete beam. The upper end bar of the precast concrete beam consists in that the column, the beam and the wall are integrally joined by placing concrete in the column as a through bar.

[0005]

According to such a beam fixing method for a wall-type rigid frame structure according to the present invention, since the lower end bar of the precast concrete beam and the main bar of the wall beam of the earthquake-resistant wall do not intersect with each other, the reinforcing bar construction is performed. Can be performed easily and in a short time without being restricted by the arrangement order of the reinforcing bars, and since the spacing between the reinforcing bars in the column can be sufficiently secured, the filling property of the concrete can be improved and the quality of the structure can be improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail in the case of constructing a pillar in a wall type rigid frame structure by casting in situ. 1 and 2 are perspective views in which columns and seismic wall reinforcing bars and formwork are assembled, FIG. 3 is a cross-sectional view of a joint showing the state of reinforcement of columns and walls, beams and seismic walls, and FIG. 4 is columns and walls Sectional view of the joint showing the reinforcement of the beam and seismic wall, Fig. 5 is a perspective view of precast concrete beams laid between the columns, and Fig. 6 is a cross section of the joint of precast concrete beams laid over the columns. FIG. 7 and FIG. 7 are plan views of the joint portion between the column, the beam and the earthquake resistant wall.

In the construction of the wall-type rigid frame structure of the present invention, first, the reinforcement of the columns 1 and the earthquake-resistant walls 2 is carried out on the foundation concrete constructed by the usual method, and the formwork 3 is constructed. (Fig. 1). In this case, as shown in FIGS. 3 and 4, the horizontal reinforcement 2a of the earthquake-resistant wall 2 and the lower-end reinforcement 4a of the wall beam 4 in the upper part of the earthquake-resistant wall 2 are through reinforcements that penetrate the column 1. The abdominal muscles 4b are not arranged through the column 1 but are arranged in the seismic wall 2 without being arranged, and instead of the omitted abdominal muscles 4b, the lower end muscles 4a are concentrated more than usual. . This is to prevent the lower end streaks 5a of the precast concrete beams 5 facing each other from intersecting the abdominal streaks 4a of the wall beams 4.

Next, concrete is placed in the formwork having such reinforcement (FIG. 2). In this placement, the pillars 1 are laid down to the underside of the girder, and the seismic wall 2 is laid down to the underside of the floorboard. After the concrete is hardened, the mold 3 is demolded, and a precast concrete beam 5 having the same dimension as the width of the column 1 in the column direction is bridged between the columns 1 (FIG. 5).
As shown in FIGS. 6 and 7, a lower end streak 5a is provided on the end portion of the precast concrete beam 5 so as to secure a predetermined fixing length, and the tip end thereof is located 90 in front of the center line of the pillar 1.
The lower end reinforcement 4a of the wall beam 4 is arranged through the gap 5b which is formed by bending upward and is formed by the opposing reinforcement of the lower end reinforcement 5a.

Next, as shown in FIG. 8, the vertical stripes 1a of the pillar 1
After the stirrup 1b is dropped into and arranged, the upper end reinforcement 5c of the precast concrete beam 5 and the upper end reinforcement 4c of the wall beam 4 are arranged. The upper end muscles 4c of the wall beam 4 are also concentrated more than usual instead of the abdominal muscles 4b omitted like the lower end muscles 4a.

Then, the precast concrete floorboard 6 is placed on the precast concrete beam 5 and the wall beam 4, and the reinforcing bars 6a are laid on the precast concrete floorboard 6 to join the columns and the beams and the precast concrete. Concrete 7 is placed on the floor board (FIGS. 9, 10, and 11). As a result, the pillar 1, the precast concrete beam 5 and the earthquake resistant wall 2 are integrally joined as shown in FIG. 12, and a wall-type rigid frame structure is constructed by sequentially repeating such steps.

[0011]

EFFECTS OF THE INVENTION The lower end bars of the main bars of the precast concrete beams placed opposite to each other at the ends of the pillars secure the fixing length for joining, and are bent and bent before the center line of the pillars, and are orthogonal to each other. Precast concrete that opposes each other by arranging the main reinforcement of the wall beam of the earthquake-resistant wall through the gap formed by the opposing reinforcement of the lower end reinforcement of the precast concrete beam, and the upper reinforcement of the precast concrete beam is through reinforcement Since the lower end reinforcement of the beam and the main reinforcement of the wall beam of the earthquake-resistant wall do not intersect, reinforcement work can be performed easily and in a short time without being restricted by the order of reinforcement.

Since the space between the reinforcing bars in the column can be sufficiently secured, the filling property of the concrete is improved and the quality of the structure can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view in which a column and a reinforcing bar of an earthquake-resistant wall are assembled.

FIG. 2 is a perspective view showing a built-in form of columns and earthquake-resistant walls.

FIG. 3 is a cross-sectional view of a joint portion showing a reinforcement arrangement of columns, wall beams, and earthquake-resistant walls.

FIG. 4 is a cross-sectional view of a joint showing a state of reinforcement of a column, a wall beam, and an earthquake-resistant wall.

FIG. 5 is a perspective view in which a precast concrete beam is bridged between columns.

FIG. 6 is a cross-sectional view of a joint portion in which a precast concrete beam is bridged over a column.

FIG. 7 is a plan view of a joint portion between a column, a beam and an earthquake resistant wall.

FIG. 8 is a cross-sectional view of a joint portion in which an upper end bar of a precast concrete beam is laid through.

FIG. 9 is a perspective view in which a precast concrete floorboard is placed between beams.

FIG. 10 is a perspective view in which reinforcing bars of a floor slab are arranged on a precast concrete floor board.

FIG. 11 is a perspective view in which concrete is cast on a precast concrete floorboard.

FIG. 12 is a cross-sectional view in which concrete is placed at a joint between a column, a beam and an earthquake resistant wall.

13 is a cross-sectional view taken along the line aa of FIG.

FIG. 14 is a cross-sectional view of a conventional joint portion between a column, a beam and an earthquake-resistant wall.

[Explanation of symbols]

 1 Pillar 2 Seismic wall 3 Formwork 4 Wall beam 5 Precast concrete beam 6 Precast concrete floor 7 Concrete

Claims (1)

[Claims] 1. In a wall-type rigid frame structure, a bottom caster of a precast concrete beam placed opposite to both ends of a column secures a fixed length for joining and is bent before the center line of the column. Along with that, the main reinforcements of the wall beams of the orthogonal earthquake-resistant walls are laid through the gap formed by the opposing reinforcements of the lower end reinforcements of the precast concrete beams, and the upper reinforcements of the precast concrete beams are inserted into the columns as through reinforcements. A method for fixing a beam in a wall-type rigid frame structure, in which a pillar, a beam, and a wall are integrally joined by placing concrete.