JP2759360B2 - Construction method of reinforced concrete building - Google Patents

Description

The present invention relates to a method of constructing a reinforced concrete building.

[Related Art] In general, reinforced concrete buildings have economic advantages such as lower construction costs than steel frames, but they require more steps and lower labor productivity, and improvements have been demanded.

For this reason, even in conventional reinforced concrete buildings, the use of precast (PCa) members for columns and the like has been used to shorten the construction period, but not only is the PCa member heavy, but also the joint between the column and beam However, there are problems such as that the method is complicated and an experiment for confirming the integrity is required.

[Problems to be Solved by the Invention] The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to use a conventional reinforced concrete construction method while maintaining a central portion of a column. Construction of a reinforced concrete building that allows two or more layers of column and beam reinforcement to be constructed at the same time by connecting two or more layers of column support members so that they can be connected, thereby saving labor and shortening the process. To provide a construction method.

[Means for Solving the Problems] The method of constructing a reinforced concrete building according to the present invention is a method for constructing a reinforced concrete building at the upper part of a lower column supporting member which is buried in a column concrete which is built in the center of a column and is cast in place. In a method of attaching a column member and connecting a column supporting member on an upper floor via the column member, the supporting member is formed so as to penetrate a beam line of a beam joined on the column, and A pillar substrate provided at the base of a pillar support member on an upper floor is connected and fixed to a connection plate attached to an upper end portion. Further, the present invention is characterized in that the column supporting member is configured by filling concrete in a steel pipe.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 and 2, reference numeral 1 denotes a column supporting member, which is set at the center of a column A between the floor slab 2 and the beam 3.

As shown in FIGS. 3 and 3A, the column supporting member 1 is formed by filling a steel pipe 1a with a concrete 1b inside a spiral pipe having a diameter of about 200 mm or the like. This column support member 1 is buried and killed in the column concrete cast in place.

A pillar substrate 1c is attached to the lower end of the pillar support member 1. A recess 1d is formed at the lower end of the pillar support member 1 and at the center of the pillar substrate 1c so that the head of a fixing bolt described later can be accommodated therein. (See also FIG. 3B) A column member 4 is integrally inserted above the column supporting member 1. The support member 4 is made of a large-diameter steel bar or an iron pipe.

A beam bar 3a of the beam 3 is set on the support member 4. In order to receive the beam bar 3a, a beam bar 4a shown by a virtual line is received.
May be provided.

As shown in FIGS. 4 (A) and 4 (B), a connection plate 5 for connecting to the pillar substrate 1c of the pillar support member 1 on the upper floor is attached to the upper end of the pillar member 4. . The connection plate 5 is attached and fixed to the upper end of the support member 4 by a fixing tool 5a such as a fixing bolt. A connection bolt 5b is implanted at a corner of the upper surface of the connection plate 5.

6 is a column, 7 is a girder PCa member, and 8 is a PCa balcony.

Next, a construction method using the column support member 1 will be described.

First, as shown in FIG. 5, the column supporting member 1 is set on the column supporting member 1 'on the lower floor. In addition, when there is no pillar support member 1 'below, it is set on a floor slab.

When the column supporting member 1 is set, as shown in FIG. 6, a column bar 6 is arranged around the column supporting member 1 and
A beam bar 3a is provided on the upper part of the column supporting member 1.

Semi-PCa slab 2 after or simultaneously with erection of the beam reinforcement 3a
Erection. The semi-PCa slab 2 is installed by being supported by a support member 7 ′ buried in a door boundary wall or a beam formwork (not shown). In addition, the slab is in addition to the above semi-PCa slab,
All PCa slabs or cast-in-place may be used.

Simultaneously with or before or after the reinforcement of the column reinforcement 6 or the installation of the beam reinforcement 3a, as shown in FIG. 4, it is connected to the upper end of the support member 4 above the column support member 1 by the fixture 5a. The plate 5 is mounted, and the column support member 1 "on the upper floor is set thereon as shown in Fig. 7. The column support member 1" is set as shown in Fig. 3. A pillar substrate 1c provided at the base of the pillar support member 1 ″ on the connection plate 5 of the support member 1
Is carried out and tightened and fixed to the connection bolt 5b with a nut.

When the column supporting member 1 "is connected and set on the upper floor, a column bar is arranged around the column supporting member 1", and a beam bar is also set on the column supporting member 1 ". Assemble the frame and cast concrete in place.

[Effects of the Invention] (1) A pillar support member is erected at the center of a pillar, and the upper pillar support member is connected to the upper end of the support member provided above the pillar support member. At the floors above the layer, it is possible to simultaneously assemble the column bars and the beam bars and to build the girder PCa members, thereby saving labor and shortening the process.

(2) Since the conventional reinforced concrete method is used, economic advantages of the conventional method can be utilized.

[Brief description of the drawings]

1 is a structural view of a concrete building according to the method of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view showing a structure of a column supporting member, and FIG. 3A is a view taken along line AA in FIG. Cross section,
FIG. 3B is a sectional view taken along the line BB in FIG. 3, FIG. 4 (A)
(B) is a diagram showing a plane and a side surface of the connection plate, respectively.
FIG. 7 is an explanatory view of the method of the present invention, and FIG. 8 is an explanatory view of connection between the column supporting member and the supporting member. 1,1 ′, 1 ″… Pole support member, 1a …… Steel pipe, 1b ……
Concrete, 1c, 1c "... pillar board, 1d, 1d" ... recess,
2,2 ″… Floor slab (semi-PCa slab), 3… Beam, 3a…
Beam reinforcement, 4, 4 ', 4 "... pillar member, 5 ... connecting plate, 5a ...
Fixture, 5b Connection bolt, A Column.

Claims (2)

(57) [Claims] 1. A pillar member is attached to an upper portion of a pillar supporting member on a lower floor which is buried in a pillar concrete which is built at the center of the pillar and is cast in place, and the pillar member on the upper floor is connected via the pillar member. In the method of connecting a column supporting member, the column member is formed so as to penetrate a beam reinforcement of a beam joined on the column, and a connecting plate attached to an upper end portion of the column member supports a column support of an upper floor. A method for constructing a reinforced concrete building, comprising connecting and fixing a pillar substrate provided at a base of a member. 2. The method for constructing a reinforced concrete building according to claim 1, wherein said column supporting member is constituted by filling concrete in a steel pipe.