JPH0545733B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method of constructing a frame of a reinforced concrete structure.

(Conventional technology) When conventional multi-story structures are constructed using the reinforced concrete construction method or the steel reinforced concrete construction method, the beams in two directions perpendicular to each other at the column head are either RC beams or
It was constructed from SRC beams.

Further, for the purpose of improving construction productivity, the structure may be constructed of reinforced concrete or a precast member made of steel-framed reinforced concrete.

(Problems to be Solved by the Invention) However, when constructing the above structure using the reinforced concrete construction method, the amount of reinforcing reinforcing bars becomes excessive, and the reinforcing bars intersect in a complicated manner in the panel zone where columns and beams intersect, making construction difficult. become.

In addition, when constructing using the steel reinforced concrete construction method, a separate element of steel construction including welding is required, which impairs economic efficiency.

Furthermore, when constructing with reinforced concrete or precast members made of steel-framed reinforced concrete, the complexity of the reinforcing bars in the panel zone makes construction difficult.

(Means for Solving the Problems) The present invention has been proposed to solve these problems, and is a method for pouring concrete for RC columns up to the lower end level of the beam in a structure mainly made of reinforced concrete. Then, we placed reinforcement at the bottom end of the beam in one direction between the tops of each RC column, and placed a straight beam steel frame between the tops of the RC columns in a direction perpendicular to the beam. It is characterized by placing the beam on a rack, then reinforcing the upper end of the beam and sub-reinforcement, as well as arranging the reinforcement for the floor slab, and then pouring concrete for the panel zone on each RC column and the floor as well as the beam. This relates to a method of constructing a reinforced concrete structure in which the beams in one direction are steel beams.

(Function) As described above, in the present invention, the concrete of the RC column is poured to the level of the lower end of the beam, and one of the beams in two directions is placed at the top of the RC column erected at each predetermined position. The beam in one direction is an RC beam, and the beam in the other direction is a steel beam. First, the lower end reinforcement of the RC beam is placed between the upper parts of the RC columns in one direction, and then along the other direction perpendicular to the same direction. , a straight beam steel frame is mounted over the top of the RC column without providing a beam support bracket or the like on the column.

Next, the reinforcement of the RC beam is arranged by arranging the upper end reinforcement of the beam that constitutes the remaining beam reinforcement of the RC beam in one direction, and the cost reinforcements arranged between the upper end reinforcement and the lower end reinforcement. Upon completion, the reinforcement for the floor slab will be placed,
Thereafter, by pouring concrete for the panel zones on each of the RC columns, the floor, and the beam, a reinforced concrete structure in which the columns and beam floor slab are integrated is constructed.

(Effect of the invention) As described above, in the present invention, among the two orthogonal beams at the top of the RC column, only one beam is an RC beam, so the complexity of beam reinforcing bars in the panel zone is significantly reduced. This makes construction easier.

Furthermore, since the steel beams are installed only in the direction perpendicular to the RC beams, welding and other joints and construction work are significantly reduced, reinforcing bar processing costs are reduced, and construction supervision is significantly reduced.

Furthermore, in conventional structures made of steel columns and beams, beam support brackets are connected to the columns, but in the present invention, the steel beams are straight and mounted between the upper parts of RC columns, making transportation and construction easier. This makes it easier to install and shortens the construction period.

(Example) The present invention will be described below with reference to the illustrated embodiments.

Concrete for each RC column 1 is poured to the level of the lower end of the beam (see Figure 1A), and then the lower end reinforcement 2 of the RC beam is placed in one direction (Y direction) between the upper parts of each RC column 1. (See Figure 1B) Then each RC
A linear beam steel frame 3 made of H-shaped steel is mounted between the upper parts of the columns 1 in the X direction perpendicular to the lower reinforcement 2.
(See Fig. 1C) The beam steel frame 3 is mounted on the upper part of the RC column 1 via a spacer 4 as shown in Fig. 2.

In the figure, numeral 5 indicates a joining part.

Next, the upper end reinforcement 6 of the RC beam and the cost reinforcement 7 surrounding the upper end reinforcement 6 and the lower end reinforcement 2 are arranged to complete the reinforcement arrangement of the RC beam (see Figure 1D). (not shown), and pour concrete for the panel zone 8 on column 1, the floor, and the beam part, and then concrete the RC column 1, RC beam 9, beam steel 3, and RC floor 1.
Build the frame of a concrete structure that integrates 0. (See Figure 1E) Figure 4 shows the case where the present invention is applied to a one-span structure, and Figure 5 shows the case where the present invention is applied to a multi-span structure. X
It is configured to be located between RC columns 1 adjacent to each other in the direction.

11 in the figure is a seismic wall.

According to the embodiment, the RC beams 9 are orthogonal to each other.
It is arranged only in the Y direction of both the X and Y directions, and the complexity of reinforcing bars in the panel zone 8 is reduced.

Furthermore, since the steel beams are arranged only in the X direction, there is almost no welding or other work involved with the steel beams, so the steel frame work costs and construction supervision are significantly reduced.

Furthermore, since the beam steel frame 3 is a straight member made of H-shaped steel or the like, it is easy to transport and erect, and the construction period can be shortened.

[Brief explanation of the drawing]

1A to 1E are perspective views showing the steps of an embodiment of the method for constructing a reinforced concrete structure using steel beams as beams in one direction according to the present invention, and FIGS. 2 and 3 are respectively A longitudinal sectional front view showing the intersection of columns and beams in a structure constructed by the method;
4 and 5 are plan views showing embodiments in which the present invention is applied to a one-span structure and a multi-span structure, respectively. 1... RC column, 2... Beam bottom end reinforcement, 3... Beam steel frame, 6... Beam top end reinforcement, 7... Cost reinforcement, 9... RC beam,
10...RC floor.

Claims (1)

[Claims] 1. Concrete for RC columns in a structure mainly made of reinforced concrete is poured to the level of the bottom end of the beam, and then the bottom end reinforcement of the beam is placed in one direction between the tops of each RC column, and then A straight beam steel frame is mounted between the upper parts of the RC columns in the orthogonal direction, and then the upper ends of the beams and the ribs are reinforced, and the floor slab reinforcement is laid out, and then each of the R columns is installed. A method for constructing a reinforced concrete structure in which the beams in one direction are steel beams, characterized by pouring concrete for the beams in the upper panel zone and the floor.