JP2579838B2 - Construction method of columns and beams in buildings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing columns and beams in a building.

[0002]

2. Description of the Related Art It is well-known that in the related art, a steel frame or a steel frame is assembled and temporarily framed, and then concrete is cast by a cast-in-place method. For this reason, there has been a drawback that the temporary frame work for installing the formwork is extremely troublesome and takes a long period of time. Therefore, as in Japanese Patent Publication No. 51-45164, the column and the beam can be precast to facilitate their connection,
In some cases, the number of temporary frames is reduced to enable quick construction. However, a problem that the work of connecting the connecting steel plates protruding to the column and the beam body and the work of incorporating the connecting steel plates in accordance with the shape of the column are troublesome can easily be considered.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, it is possible to easily connect a connecting steel plate projecting to a precast column and a beam, and to standardize the width of the column and the beam by connecting without a step. It is intended to provide a method of constructing a column and a beam in a building in which the configuration of the column and the beam is simplified.

[0004]

SUMMARY OF THE INVENTION The present invention for this purpose, is protruded buried the steel material long from the upper and lower end surfaces in the vertical direction co
On the side of the concrete pillar main body, a precast column consisting of concrete sleeves with buried sleeve pillar steel plates protruding vertically from the upper and lower end surfaces, and a buried beam steel plate are placed on both sides from both end faces. A precast concrete beam that protrudes in the direction, a steel frame protruding from the upper end of a column erected on the foundation and a steel frame protruding from the lower end of another column are connected and fixed to form a column. Connected vertically, between lower pillars
The lower part of the concrete side of the concrete beam is placed on the upper edge of each of the opposing concrete sleeves to support the beam, and the beam is connected to the sleeve steel plate and to both of the steel members vertically joined. This is a construction method in which the concrete beams are fixed and then concrete is poured into the space between the upper and lower columns to combine the columns and beams. In addition, a bolt hole may be provided in the steel frame material, the sleeve column steel plate, and the beam steel plate, and the beam steel plate and the steel frame material and the sleeve column steel plate may be fixed to each other by bolts via a joint material.

[0005]

After the pillar is fixed to the foundation and erected, the steel frame protruding from the upper end of the column and the steel frame protruding from the lower end of the upper column can be joined and fixed, and can be connected continuously. The lower part of the concrete side of the body is placed on the upper edge of the concrete sleeve to support the beam, and the beam steel plate and the steel frame material and the column steel plate projecting in the space between the upper and lower columns are joined. The beam body is held by being fixedly connected.

The columns and beams are joined by covering the space between the upper and lower columns with a temporary frame and casting concrete. If the slab forming temporary frame is continuously applied from the upper and lower spaces of the columnar body and the upper part of the beam body connected thereto, and the concrete is cast at the same time, the slab can be integrally formed together with the beam.

[0007]

In FIG. 1, a pillar 1 is a cross-shaped wall pillar, and sleeves 12 are integrally formed on four sides of a base pillar 11 by concrete molding. A cross-shaped steel frame 13 is buried in the center of the column main body 11, and a circular stirrup coil 14 is buried around the crossed steel frame 13.

A sleeve steel plate 15 of a steel frame plate is embedded in the center of the sleeve portion 12, and an elliptical band reinforcing coil 16 is embedded around the sleeve steel plate 15. That is, the circular stirrup coil 14 and the elliptical stirrup coil 16 are arranged at predetermined positions by support rods or the like, and the state in which the cruciform steel frame 13 and the sleeve steel plate 15 are inserted therein without abutting is maintained and the concrete is cast. They are precast integrally. This is because the arrangement of the sleeve steel plate 15 in the elliptical stirrup coil 16 simplifies the conventional reinforcing bar arrangement work, and the elliptical shape of the stirrup coil 16 makes the sleeve steel plate 15 close to the stirrup steel plate 15. This is because the sleeve column steel plate 15 that is easily distorted can be tightly held and prevented from being distorted. Furthermore, the width of the pillar can be reduced due to the elliptical shape of the stirrup coil 16, and the room space and the like can be used effectively.

The pillar body 11 and the pillar body 11
Cross steel 13 and sleeve steel plate 1 from both upper and lower end surfaces of sleeve 12
5 in the up and down direction, and the projected cross steel frame 1
The bolt holes 17 and 18 are provided through the 3 and the sleeve steel plate 15. In addition, the protruding length of the cross-shaped steel frame 1
3 is longer. Further, the elliptical stirrup coil 16 and the circular stirrup coil 14 slightly protrude from the upper end surface of the column 1, respectively. A narrow base 1 is provided at the upper end of the sleeve 12.
9 protrudes.

The beam 2 is made by inserting a beam steel plate 22 into the elliptical band coil 21 without abutting it, and then slab concrete up to the upper portion of the beam steel plate 22. The coil 21 is exposed. Further, a bolt hole 23 is provided at both ends of the beam steel plate 22 projecting to both sides, and a bolt hole 24 is provided inside the beam hole 23. The projecting length of the beam steel plate 22 from the concrete-side end surface is a length in contact with the side end surface of the cross steel frame 13 in a state where the concrete-side end surface is placed on the base 19,
The height of the beam steel plate 22 is the length between the sleeve steel plates 15 positioned above and below when the cross steel frame 13 is vertically joined.

Next, the construction method of this embodiment will be described with reference to the drawings. First, after the column 1 is fixed to the foundation and erected, as shown in FIG. 2, a cross steel frame 13 protruding from the upper end of the column 1 and a steel frame 13 protruding from the lower end of the upper column 1 Are butt-joined at their opposing end faces, and then the concrete-side lower end of the beam 2 is placed on the base 19 of the sleeve 12 in the lower column 1. The beam 2 is held by being placed on the pillars 1 on both sides. In this state, the side end surfaces of the projecting beam steel plate 22 are butt-joined to the respective side end surfaces of both projecting cross-shaped steel frames 13 joined vertically, and the upper and lower end surfaces of the beam steel plate 22 are fitted with the sleeves of the upper and lower columns 1. The upper and lower end surfaces of the column steel plate 15 are joined.

As shown in FIGS. 3 and 4, a gusset plate 3 serving as a joint material is sandwiched between the joints from both sides, and bolt holes 17, 18, and 2 are formed through the bolt holes.
The bolts are fastened with bolts 3 and 24 and connected to each other.
That is, the upper and lower cross steel frames 13 via the gusset plate 3
Are connected to each other, and the beam steel plate 22 is connected to the cross steel frame 13 and the upper and lower sleeve steel plates 15.

Then, as shown by the broken line in FIG. 2, a concrete form which covers the space between the upper and lower pillars 1 and the upper part 2 of the beam which is connected to the gusset plate 3 and casts concrete is set. The column and the beam are connected and constructed. In addition, the slab can be simultaneously formed simultaneously by continuing the slab forming formwork from the upper and lower spaces of the column 1 and the upper part of the beam 2 continuous therewith.

As described above, according to the present embodiment, the cross-shaped steel frame 13 protruding from the upper end of the column 1 and the cross-shaped steel frame protruding from the lower end of the column 1 using the precast column 1 and beam 2 are used. 13 are joined at the upper and lower end surfaces thereof, so that the column 1 can be continued with the same width without any step. Further, in the space of the upper and lower pillars 1, the projecting beam steel plate 22 and the cross-shaped steel frame 13 and the sleeve pillar steel plate 15 are fixed to each other by the gusset plate 3, so that the connecting portion is outside the width of the pillar 1. Since it does not protrude, when a slab is not required, no extra formwork is required other than a temporary frame that covers the space, and the temporary frame work becomes extremely simple.

In this embodiment, the above-described method is employed, but the present invention is not limited to this. For example, regardless of the shape or configuration of the column, the shape may be as shown in FIGS. 5 and 6, and the concrete sleeve may be provided continuously on the side of the concrete column main body. Further, the shape and configuration of the steel frame material or the sleeve steel plate to be protruded therefrom are also appropriate.
A steel frame material 51 or the like may be used, or a steel frame material 52 may be provided only on the upper and lower portions of the column as shown in FIG.

Furthermore, the shape and configuration of the concrete beam are also optional. In this example, the upper portion of the beam is formed without concrete in order to cast the slab integrally with the concrete. However, when the slab is not formed, the entire periphery of the beam may be covered with concrete. When a pedestal is formed at the upper edge of the concrete sleeve , the shape of the pedestal is also appropriate.

Further, the connection structure between the steel frame material and the column steel plate and the beam steel plate is not limited. In addition to the joining of the beam steel plate at the end surfaces of the steel frame material and the column steel plate as shown in FIG. , They may be joined by overlapping. Also, the connecting means may be welding or the like, instead of bolting.

[0018]

According to the first aspect of the present invention, it is possible to easily connect by using the precast columns and beams, and at that time, by connecting the buried steel frame material and the sleeve column steel plates to the beam steel plates before concrete casting. As a result, the column and the beam can be easily and quickly and smoothly integrated. Also, in claim 2
It is can be easy to fix the sleeves pillar steel plate and steel material and beam steel plate for by the bolt fastening.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part showing a joining step of the present invention.

FIG. 2 is a longitudinal sectional view of a main part showing the connection state.

FIG. 3 is an enlarged cross-sectional end view of a main part showing the connection state.

FIG. 4 is an enlarged longitudinal sectional end view of a main part showing the connection state.

FIG. 5 is a perspective view of a main part of another example of a pillar.

FIG. 6 is a perspective view of a state in which a column and a beam according to yet another example are abutted.

FIG. 7 is a vertical sectional side view of another example in which a beam steel plate and a column steel plate are connected in an overlapped state.

[Explanation of symbols]

1 pillar, 11 pillar body , 1
2 sleeve part , 13 cross steel frame 13, 14 circular stirrup coil 15 sleeve column steel plate, 16 elliptical stirrup coil, 1
7, 18 bolt holes, 19 bases, 2 beams,
21 Elliptical band coil, 22 Beam steel plate, 2
3, 24 bolt holes, 3 gusset plates, 4
Bolt, 51, 52 steel frame material

Claims (2)

(57) [Claims] 1. A buried was a steel material on the side of the concrete pole body portion which projects longer in the vertical direction from the upper and lower end faces, communicating the concrete sleeve portion which projects shorter vertically buried with sleeves Column steel from the upper and lower end surfaces A precast column, a precast concrete beam with buried beam steel plates protruding further from both sides, and a steel frame projecting from the upper end of the column erected on the foundation, The lower and upper pillars are connected and fixed by connecting the protruding steel frame material to the lower end of another pillar, and the concrete sleeves facing each other between the lower pillars
The lower part of the concrete side of the concrete beam is placed on the upper edge of each part to support the beam, and the beam steel plate is connected to the sleeve steel plate and to both of the steel frames joined up and down. A method for constructing a column and a beam in a building, wherein the column and the beam are joined by placing concrete in the space between the upper and lower columns after fixing the slab. 2. A steel material, and Toru設bolt holes in the sleeves Column steel and beam steel, construction of claim 1 in which the beam steel and steel material via a joint member and the sleeve pillar steel fixed by a bolt secured Construction method.