JP2545626Y2 - PC beam - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PC beam having a steel beam member at the center and reinforced concrete beams at both ends.

[0002]

2. Description of the Related Art Conventionally, there has been known a beam having a steel beam member at the center and reinforced concrete beam members at both ends. This method is more economical than conventional reinforced concrete beams, can reduce its own weight, and can be used for large span buildings because it can form long span beams with small beams.

[0003]

However, as described above, in a beam having a steel beam member at the center and a reinforced concrete beam member at both ends, the transmission of stress at the joint between the reinforced concrete beam member and the steel beam member is not possible. There was a drawback that it was not performed smoothly. The present invention has been made in view of the above-described problems, and has as its object to provide a PC having a steel frame member at the center and reinforced concrete beams at both ends.
In a beam, stress transmission at a joint between the reinforced concrete beam member and the steel beam member is performed smoothly.

[0004]

The gist of the PC beam of the present invention for achieving the above object is to provide a PC beam having a steel beam member at the center and reinforced concrete beam members at both ends. A fixing plate is provided at an end of the steel beam member embedded in the reinforced concrete beam member, and a joining bar whose tip is arranged in a panel zone of the reinforced concrete column is fixed to the fixing plate, and an end of the steel beam member is fixed. The reason is that the band plate is wound around the beam main reinforcement of the reinforced concrete beam member which overlaps at appropriate intervals, and the reinforced concrete beam member is integrally joined with the PC member installed in the panel zone of the reinforced concrete column.

[0005]

The fixing plate provided at the end of the steel beam member embedded in the reinforced concrete beam member is provided with a joint bar whose tip is arranged in the panel zone of the reinforced concrete column, and overlaps with the end portion of the steel beam member. Since the band plate is wound around the beam reinforcing bars of the reinforced concrete beam member at appropriate intervals, stress is smoothly transmitted at the joint between the reinforced concrete beam member and the steel beam member. In addition, since the reinforced concrete beam member is integrally joined with the PC member installed in the panel zone of the reinforced concrete column, difficult reinforcing work in the panel zone can be omitted, so that the beam and the column can be easily joined. Shortening can be achieved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a PC beam according to the present invention will be described below in detail with reference to the drawings. 1 (1) and (2) are a plan view and a front view of a PC beam of the present invention, FIG. 2 is a sectional view of a joint between a reinforced concrete beam member and a steel beam member, and FIG. 3 is FIG.
3 is a sectional view taken along line aa of FIG.

The PC beam 1 is formed by a steel beam member 2 at the center and a reinforced concrete beam member 3 at both ends.
The reinforced concrete beam member 3 is a half PC, the end of the steel beam member 2 is buried, and a band plate 5 is wound around a beam main reinforcing bar 4 overlapping with the end, and a single stirrup bar is provided between the band plates 5. 6 are arranged, and a double stirrup 7 is arranged outside the band plate 5.

[0008] A fixing plate 8 is provided at an end of the steel beam member 2, and a joining bar 9 whose tip is arranged in a panel zone is fixed to the fixing plate 8 by a nut 9a.

FIG. 4 is a cross-sectional view showing the connection with the PC column 10.
After the reinforcement is arranged in the panel zone, the reinforcement of the upper end reinforcement 4a of the beam, etc., the concrete 11 is cast and integrally joined to the PC column 10.

FIG. 5 shows a PC beam in which a steel beam member 2 at the center is joined by a joining plate near a reinforced concrete beam member 3, and the reinforced concrete beam member 3 is integrally joined to a PC member 12 in which a panel zone is precast. 1a.

An end of the steel beam member 2 is buried in the reinforced concrete beam member 3 in the same manner as described above, and band plates 5 are wound around the beam main reinforcing bars 4 and 4a overlapping with the ends at appropriate intervals. A single stirrup streak 6 is arranged between the five, and a double stirrup streak 7 is arranged outside the band plate 5.

A joining bar 9 is fixed to the fixing plate 8 of the steel beam member 2, and the tip thereof is arranged in a PC member 12. The PC member 12 is provided with an insertion hole 12a for inserting the main pillar 10a, and a beam member 13 is integrally formed on a side surface thereof. The PC beam 1a is to be transported in a state where the steel beam member 2 and the PC member 12 at the center are separated from each other and assembled at the site.

FIGS. 8 and 9 show the PC beam 1a and the PC column 1 respectively.
0 shows a method of joining with an insertion hole 12a.
The PC main body 10a is inserted into the
No. 0, the mortar is filled in the insertion hole 12a, and these are joined. Then, the reinforced concrete beam member 3 and the steel beam member 2 integrally joined to the PC member 12 are joined by a joining plate.

[0014]

According to the invention, a PC beam having a steel beam member at the center and a reinforced concrete beam member at both ends thereof is provided with a fixing plate at an end of the steel beam member embedded in the reinforced concrete beam member. Bonding bars whose tips are arranged in the panel zone of the reinforced concrete column are fixed to the plate, and band plates are wound at appropriate intervals around the beam main bar of the reinforced concrete beam member overlapping with the end of the steel beam member. Thereby, it is possible to smoothly transmit the stress at the joint between the reinforced concrete beam member and the steel beam member.

By integrally joining the reinforced concrete beam member and the PC member in the panel zone, it is possible to omit difficult reinforcing work in the panel zone. Can be.

[Brief description of the drawings]

FIG. 1A is a plan view of a PC beam, and FIG. 1B is a front view of the same.

FIG. 2 is a cross-sectional view of a joint between a reinforced concrete beam and a steel beam.

FIG. 3 is a sectional view taken along line aa of FIG. 2;

FIG. 4 is a sectional view of a joint between a PC beam and a PC column.

FIG. 5A is a plan view of a PC beam according to another embodiment, and FIG.
FIG.

FIG. 6 is a sectional view of a joint between a reinforced concrete beam and a steel beam in a PC beam according to another embodiment.

FIG. 7 is a plan view of a PC member.

FIG. 8 is a front view of a state in which a PC beam according to another embodiment is installed on a reinforced concrete column.

FIG. 9 is a front view showing a state in which a PC beam of another embodiment is installed on a reinforced concrete column.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a PC beam 2 Steel beam member 3 Reinforced concrete beam member 4 Beam main bar 5 Band plate 6, 7 Stirrup bar 8 Fixing plate 9 Joint bar 10 PC column 11 Concrete 12 PC member

Claims (2)

(57) [Scope of request for utility model registration] 1. A PC beam having a steel beam member at the center and a reinforced concrete beam member at both ends thereof, wherein a fixing plate is provided at an end of the steel beam member embedded in the reinforced concrete beam member. The plate is fixed with a joint bar whose tip is arranged in the panel zone of the reinforced concrete column, and the band plate is wound at appropriate intervals around the beam reinforcing bar of the reinforced concrete beam member overlapping with the end of the steel beam member. Characteristic PC beam. 2. The PC beam according to claim 1, wherein the reinforced concrete beam member is integrally joined with a PC member installed in a panel zone of a reinforced concrete column.