JPH0642037A - Construction method of wall type rigid frame construction - Google Patents

Abstract

PURPOSE:To execute effective work without restricting the 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:An earthquake resisting wall 2 between columns 1 in a wall type rigid frame construction is built up to a wall beam 4 to insert the lower end reinforcements 4a of the wall beam 4 into the columns 1 to place reinforcement, precast concrete beams 5 are conxtructed over between the columns 1, and each of the lower end reinforcements 5a in the joining ends ensures a joining anchor length. The lower end reinforcements 5a are bent at this side from the center lines of the columns 1 across the lower end reinforcements 4 of the wall beam 4 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 construction method for a wall-type rigid frame structure.

[0002]

2. Description of the Related Art When a precast concrete beam is used as the construction method for a wall-type rigid frame structure in which the girder direction is a flat wall column with the same dimensions as the beam width and the beam-to-beam direction is an earthquake-resistant wall without a beam type As shown in FIG. 19, it is necessary to arrange the lower end streaks 10a at the joint ends of the precast concrete beam 10 so as to cross the center line of the column 20 and overlap each other. Therefore, the lower end bar 10a of the joint end of the precast concrete beam 10 and the main bar 40a of the wall beam 40 of the earthquake-resistant wall 30 are orthogonally arranged, and the upper end bar 10b thereof is also directly connected to the main bar 40a of the wall beam 40. Has been crossed.

[0003]

Therefore, in addition to the lower end bars of the joint ends of the precast concrete beams facing each other in the column overlapping each other, the main bars of the wall beams of the earthquake-resistant wall also intersect with each other, so that the bar arrangement procedure is There was a problem that it was not possible to perform efficient work because it was restricted and required detailed consideration in advance. Further, since the space between the reinforcing bars cannot be sufficiently set in the column, the filling property of the concrete is poor, and voids may be generated, which may lead to deterioration of the quality of the structure. The present invention has been made in view of the above problems, and an object thereof is a construction method for a wall-type rigid frame structure, which enables efficient work without being restricted by the bar arrangement procedure, Is to improve the filling quality of concrete in order to improve the quality of the structure.

[0004]

The gist of the present invention for achieving the above object is to construct each column up to the lower surface position of a beam in a wall type rigid frame structure and to form a seismic wall between these columns. Building up to the beam and arranging the bottom beam of the wall beam through the column, and then installing a precast concrete beam across these columns to secure the anchor length for joining the bottom beam at the joint end. And, after bending and arranging before the center line of the column across the lower end of the wall beam, a precast concrete floor slab is erected on the precast concrete beam and the wall beam. In this case, the column is a precast concrete column, and the upper end bar of the precast concrete beam is bent and arranged before the center line of the column. It resides in.

[0005]

According to the method for constructing a wall-type rigid frame structure according to the present invention as described above, an earthquake-resistant wall between columns is constructed up to the wall beams and the lower end reinforcements of the wall beams are passed through the columns, and By securing the fixing length for joining the lower end bar of the precast concrete beam placed opposite to the column, and by bending the bar before the center line of the column with the main bar of the wall beam sandwiched, Since the lower end reinforcements of the beams do not intersect with each other in the column, the reinforcement arrangement procedure in the column is not restricted and a sufficient reinforcement arrangement interval of the reinforcing bars in the column can be secured.

[0006]

EXAMPLES Examples of the construction method of the wall type rigid frame structure according to the present invention will be described in detail below. The first embodiment will explain a case where the pillar is constructed of cast-in-place concrete. Fig. 1 is a perspective view of the columns and the reinforcing bars of the seismic wall and the formwork assembled, Fig. 2 is a front view showing the reinforcement of the columns and wall beams, Fig. 3 is a side view showing the reinforcement of the columns and wall beams, and Fig. 4 Is a perspective view in which concrete is placed in the formwork, Fig. 5 is a cross-sectional view of a joint between a column, an earthquake-resistant wall and a wall beam, Fig. 6 is a cross-sectional view of the column, and Fig. 7 is a precast concrete beam hung between the columns. Fig. 8 is a cross-sectional view of the joint where the precast concrete beam is hung on the pillar.
FIG. 9 is a plan view of a joint portion between a column, a beam and an earthquake resistant wall.

In the construction method for a wall-type rigid frame structure of the present invention, first, the rebars of the pillar 1 and the earthquake-resistant wall 2 are assembled on the foundation concrete constructed by the usual method, and the form 3 is constructed. Include (Fig. 1). In this case, as shown in FIGS. 2 and 3, the lateral streaks 2a of the earthquake-resistant wall 2 and the earthquake-resistant wall 2
The lower end bar 4a of the wall beam 4 in the upper part is a through bar that penetrates the column 1, but the abdominal bar 4b of the wall beam 4 is not a through bar in the column 1 but is stopped in the wall beam 2. Instead of the abdominal muscles 4b omitted, the lower end muscles 4a are arranged more intensively than usual.

Next, concrete is placed in the mold 3 having such a bar arrangement (FIG. 4). This placement is performed until each pillar 1 is at the lower surface position of the girder, that is, the position at which the lower surface of the precast concrete beam 5 is placed, and the seismic wall 2 is at the lower surface position of the precast concrete floor slab 6, that is, the wall beam 4. As a result, as shown in FIGS. 5 and 6, the lower end streaks 4a of the wall beam 4 are in a state in which they are arranged through the column 1, but the abdominal muscles 4b are stopped inside the wall beam 4 and are fixed to the column 1. It is not arranged inside. Further, the upper surface of the wall beam 4 has the same height as the precast concrete beam 5 installed between the columns 1.

Next, when the concrete is hardened, the mold 3 is demolded, and a precast concrete beam 5 having the same size as the width of the columns 1 in the column direction is bridged between the columns 1 (FIG. 7).
As shown in FIGS. 8 and 9, the lower end streak 5a of the joining end portion of the precast concrete beam 5 placed opposite to the pillar 1 is provided so as to secure a predetermined fixing length, and its tip is Before the center line of the pillar 1, that is, the lower end streak 4 of the wall beam 4
It is bent 90 degrees to the upper side with "a" sandwiched between them. Therefore, the lower end reinforcement 5a of the precast concrete beam 5 and the lower end reinforcement 4a of the wall beam 4 are arranged without intersecting each other.

Next, as shown in FIG. 10, the vertical stripe 1 of the pillar 1
After the stirrup 1b is dropped into a and arranged, the precast concrete floor slab 6 is placed on the precast concrete beam 5 and the wall beam 4. Then, the upper end reinforcement 5b of the precast concrete beam 5 and the upper end reinforcement 4c of the wall beam 4 are laid through, and the reinforcing bar 6a for the floor slab is laid on the precast concrete floor slab 6 (FIGS. 11 and 12). ).
It should be noted that the upper end streaks 4c of the wall beam 4 are concentrated more than usual like the lower end streaks 4a.

Next, by placing concrete 7 on the precast concrete floor slab 6 and at the joints between the columns and the beams, the columns 1 and the precast concrete beams 5 are placed.
And the earthquake-resistant wall 2 are integrally joined (see FIGS. 13 and 1).
4, FIG. 15). Then, the wall-type rigid frame structure is constructed by sequentially repeating the above steps.

Further, in the second embodiment shown in FIGS. 16 to 17, the pillar 1 is a precast concrete pillar 1c, the main bar 1a is projected on the upper surface thereof, and the wall bar is formed on the side surface. 1d of the joint muscle is projected.

Also in this embodiment, the construction method is basically the same as that of the first embodiment. First, the precast concrete pillar 1c is placed at the built-up position on the foundation concrete, and then the precast concrete pillar 1c is placed. The joint sleeve embedded in the column base of the
Then, the column bars 8 are fixed to each other. Then, by arranging the reinforcing bars of the earthquake-resistant wall 2 and assembling the formwork 3 and placing concrete, the lower end bars 4a of the wall beams 4 as shown in FIG. 5 and FIG. Seismic wall 3 with reinforcement
Is built. Further, thereafter, the wall type rigid frame structure is constructed by repeating the same construction method as in the first embodiment.

Further, in the third embodiment shown in FIG. 18, the upper end bar 5b of the precast concrete beam 5 in the first and second embodiments is bent and arranged in front of the center line of the column 1 like the lower end bar 5a. It is a line.

The upper end streak 5b is bound in advance to the stirrup bar 5c provided on the upper surface of the precast concrete beam 5 by a numbered wire or the like, and the tip end secures a fixing length like the lower end streak, and the lower side. Is bent 90 degrees. The wall beams 4 are arranged through the inside of the pillar 1 with the upper end streaks 4c of the wall beams 4 interposed therebetween. As a result, it is possible to save the labor of arranging the upper end reinforcement 4c at the site and arrange the upper end reinforcement 4c of the wall beam 4 without intersecting it.
It is possible to further secure the reinforcing bar arrangement interval in the column 1.

[0016]

[Effects of the Invention] Each column is constructed up to the lower surface of the beam, and a seismic wall between these columns is constructed up to the wall beam, and the lower end reinforcement of the wall beam is laid in the column. A precast concrete beam was erected over the bottom end of the joint end to secure a fixing length for joining, and by bending the bottom end of the wall beam before the center line of the column, Since the lower end bars of the orthogonal precast concrete beams and the lower end bars of the wall beams do not intersect with each other in the column, the reinforcing bar construction procedure is not restricted and efficient work can be performed.

By securing the fixing length for joining the lower end bar at the joint end of the precast concrete beam and bending and arranging it before the center line of the column with the lower end bar of the wall beam sandwiched, Since it is possible to secure a sufficient space between the reinforcing bars in the pillar, it is possible to improve the filling quality of the concrete and improve the quality of the structure.

[Brief description of drawings]

FIG. 1 is a perspective view in which a pillar, a reinforcing bar of a seismic wall, and a formwork are assembled.

FIG. 2 is a front view showing the reinforcement of columns and wall beams.

FIG. 3 is a side view showing the reinforcement of columns and wall beams.

FIG. 4 is a perspective view in which concrete is placed in a mold.

FIG. 5 is a cross-sectional view of a joint portion between a column, an earthquake-resistant wall, and a wall beam.

FIG. 6 is a cross-sectional view of a column.

FIG. 7 is a perspective view in which a precast concrete beam is bridged between columns.

FIG. 8 is a cross-sectional view of a joint portion in which a precast concrete beam is bridged over a column.

FIG. 9 is a plan view of a joint portion between a column, a beam and an earthquake resistant wall.

FIG. 10 is a perspective view of a precast concrete floor slab placed on a precast concrete beam.

FIG. 11 is a perspective view in which reinforcing bars of a floor slab are arranged on a precast concrete floor slab.

FIG. 12 is a cross-sectional view of a joint portion between a column, a beam, and an earthquake-resistant wall.

FIG. 13 is a perspective view of placing concrete on a precast concrete floor slab.

FIG. 14 is a cross-sectional view in which concrete is placed at a joint between a column, a beam and an earthquake resistant wall.

15 is a sectional view taken along the line aa of FIG.

FIG. 16 is a perspective view in which the precast concrete columns of the second embodiment and the reinforcing bars of the earthquake-resistant wall are assembled.

FIG. 17 is a perspective view showing an assembled form of the earthquake-resistant wall.

FIG. 18 is a cross-sectional view of a joint portion between a column, a beam and an earthquake resistant wall according to the third embodiment.

FIG. 19 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 slab 7 Concrete

Claims (3)

[Claims] 1. In a wall-type rigid frame structure, each column is constructed up to the lower surface position of the beam, and an earthquake-resistant wall between these columns is constructed up to the wall beam, and the lower end bar of the wall beam is laid in the column. , Then, a precast concrete beam is erected between these columns to secure a fixing length for joining the lower end bar at the joint end, and before the center line of the column across the lower end bar of the wall beam. After bending and arranging, a precast concrete floor slab is erected on the precast concrete beam and the wall beam, and concrete is placed in the precast concrete floor slab and the pillar, which is a wall-type rigid frame structure. Construction method. 2. The method for constructing a wall-type rigid frame structure according to claim 1, wherein the columns are precast concrete columns. 3. The method for constructing a wall-type rigid frame structure according to claim 1, wherein the upper end reinforcement of the precast concrete beam is bent and arranged before the center line of the column.