JPH0441838A - Connection structure between PC beam and wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a joint structure between a PC beam and a wall.

(Prior art) In the RC layered construction method, the RC wall (PC beam b if it has a stem) on the outer periphery has beam ribs (C) placed outside the wall vertical reinforcements (a), so the PC beam Φ ) had a triangular cross-section. (Refer to Figure 6) (Problem B to be solved by the invention) Therefore, the PCC manufacturing formwork is manufactured separately from the general beam manufacturing formwork, and it takes time and effort to manufacture the PC beam, and
Because the C-beam has a triangular cross-section, the center of gravity would be biased during erection, resulting in a lack of stability and requiring a great deal of effort.

The present invention was proposed in view of the problems of the prior art, and its purpose is to provide a PC beam that is easy to manufacture, can be erected in a stable state, and has improved workability. The point is that it provides a joint structure with the wall.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the PC beam and wall connection structure according to the present invention has a structure in which a PC beam and a wall are connected to each other on the outer surface of a beam body having a rectangular cross section in which beam main reinforcements and cost reinforcements are embedded. In a PC beam, an uneven portion is provided, and the proximal end of a wall reinforcement reinforcement is fixed to an insert embedded in the beam body in contact with the uneven portion, and the outer surface uneven portion is attached to the wall concrete. At the same time, the projecting ends of the wall reinforcement anchoring ribs from the PC beam are fixed to the wall reinforcements buried in the same wall concrete.

(Function) According to the present invention, the PC beam with a rectangular cross section is integrated with the wall concrete via the uneven portion provided on the outer surface of the beam, and the PC beam is buried in contact with the uneven portion of the PC beam. The protruding end of the wall reinforcement anchoring rib whose base end was fixed to the inserted insert was fixed to the wall reinforcement, so that the PC beam and the wall having a rectangular cross section were integrally joined. Ru.

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

The case is a PC beam, and the main beam reinforcement (1) and reinforcing bars (2) are embedded in one beam with a rectangular cross section, and the top of the reinforcing bars (2) protrudes from the top surface of the one beam.

An uneven part (3) is provided on the outer surface of the beam frame, and a wall reinforcement reinforcement (5) is attached to the insert (4) fixed in contact with the uneven part (3) from the body of the beam. It is installed so that it protrudes outward.

Therefore, when manufacturing the PC wall holder, the uneven portions (3
), a conical hole (6a) is bored in the molding cotter form (6) according to the spacing of the wall reinforcing ribs (5), and an insert (4) is inserted into the hole (6a). ) insertion hole (7a)
After fitting the truncated conical seat (7) made of rubber having It is inserted into the catch seat (7) and concrete is poured.

(See Figures 3 and 4) When the poured concrete is removed from the mold after it has hardened, the caster form (6) and the seat (7) come off, leaving only the insert (4). Thereafter, the proximal threaded portion of the wall reinforcement anchoring rib (5) is screwed into the female screw hole (4a) of the insert (4).

Therefore, the PC beam with walls has the same cross-sectional shape as the general beam without walls, and can be manufactured using the same beam formwork.

Note that FIG. 5 shows another formwork made of PCC, in which the insert (4) is directly inserted into the through hole provided in the cotter formwork (6).

The PC beams manufactured as described above are integrally joined to the cast-in-place concrete wall (a) via the uneven portions (3), and the tips of the wall reinforcement reinforcements (5) protrude. The PC wall frame is fixed to the wall reinforcing bar (9), thus joining the PC wall frame and the wall 0.

(Effects of the Invention) According to the present invention, as described above, the beam body of the PC beam at the outer periphery to be joined to the wall has a rectangular cross section in which the beam main reinforcement and the ribs are embedded, and the outer surface of the beam body The tip of a rib for wall reinforcement fixing, which integrates the PC beam and wall concrete through the provided uneven portion, and whose base end is fixed to an insert buried in the beam frame in contact with the uneven portion. By fixing the protrusion to the wall reinforcement, the PC beam and the wall are integrally joined.

Furthermore, since the PC beam is formed to have a rectangular cross section instead of a triangular cross section as in the past, the PC beam can be manufactured using the formwork of the general part without walls, and the formwork can be The number of types is reduced and manufacturing is easy.

Furthermore, since the beam frame has a rectangular cross section, it does not become eccentric and is stable during erection, and does not require reinforcement with special supports, improving workability.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing an embodiment of the joint structure between a PC beam and a wall according to the present invention, Fig. 2 is a perspective view of the PC beam, and Fig. 3 is a longitudinal cross-sectional view showing the manufacturing formwork of the PC beam. Figure 4 is a perspective view of the Kotter formwork, Figure 5 is a vertical cross-sectional side view showing another example of a formwork for manufacturing PC beams, and Figure 6 is a vertical cross-sectional view showing a conventional joint structure between a PC beam and a wall. It is a front view. (2)...PC beam, (Bl...wall, (1
)...Beam main reinforcement, (2)...cost reinforcement, (3)...
...Irregularities, (4)...Inserts, (5
)...costal muscles for anchoring wall muscles. Agent: Patent attorney Shige Okamoto (1 person) Figure 2 Figure 1 Figure 3 Figure 4 Figure 6

Claims (1)

[Claims] An uneven part is provided on the outer surface of the beam body with a rectangular cross section in which the main beam reinforcement and cost reinforcement are embedded, and the base end of the cost reinforcement for wall reinforcement is attached to an insert buried in the beam body in contact with the uneven part. The irregularities on the outer surface of the fixed PC beam are joined to the wall concrete, and the protruding ends of the wall reinforcement reinforcements from the PC beam are connected to the wall reinforcements buried in the wall concrete. A PC wall-to-wall joint structure characterized by being fixed.