JPS58191848A - Composite beam - 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] The present invention relates to a composite beam.

Conventional composite beams include, for example, one in which reinforcing bars are placed in the middle and steel beams are used on both sides, but this structure creates rigidity during temporary construction of the beam, which poses some inconveniences during construction. Ta.

The purpose of the present invention is to provide rigidity during temporary construction, and the feature of the present invention is that the middle part of the beam is made of a PC beam.

It is in.

Embodiments of the present invention will be described below with reference to the drawings.

In Fig. 1, the beam main body 1 has a PC beam (PC beam) τ]
2°, and steel beams 3, 3 are connected on both sides by connecting means 4.1.The interior of the PC beam 2 extends over the entire length and vertically as shown in Figures 1 and 2. 2
The actual reinforcing bars 5 and 5 are reinforced. Both ends of width stop bars 6 are hooked between both reinforcing bars, and such width stop bars are arranged at regular intervals on the PC beam. Rebar 5,
Both ends of the PC beam 5 protrude outward from both end faces of the PC beam 2, and these projecting ends are connected to the steel beams 3, 3 by a connecting means 4.

The specific structure of the connecting means 4 will be explained based on FIGS. 1 and 3. The rear ends of the joint pipes 7 are fitted and crimped onto the ends of the reinforcing bars 5, 5. A female thread 7a is provided at the tip opening of this joint pipe. Further, a joint pipe 8 is attached as a member to the end of the flange 3a of the steel beam sections 3, 3 on the side facing the joint pipe 7, and is supported by a plate 9. The joint pipe 8 faces the joint pipe 7, and is internally provided with a female thread 8a over its entire length, but the screw is not necessarily in-line and is only provided at one end of the joint pipe. There may be. For installation, the plate 9 is fixed to the outer surface of the flange 3a of the PC beam portion by a welding method or the like to prevent the joint pipe 8 from being thermally deformed due to the high heat associated with welding.

The opposing joint pipes 7 and 8 are connected by a threaded rod 10 as shown in FIG. One end of this rod is screwed into the joint pipe 7 on the reinforcing bar 5 side, and the other end is screwed into the joint pipe 8 on the steel beam section 3 side, and the NAND 11 is attached to this screw rod. The connection is fixed at 12.

1-3r explaining the connection operation of joint pipe 7.8
For example, the female threaded rod 10 is inserted a certain amount into the joint pipe 8, and at the same time, one of the nuts 11 is rotated (7) and moved to the externally applied nut 12 side, and is brought into close contact with the nut 12.

Then, first, the joint pipe 77 of the reinforcing bar 5 is opposed to the joint pipe 8 of the steel beam parts 3, 3, and then the nuts 11 and 12 (particularly the nut 12) are rotated once i], and the threaded rod 10 is also rotated in conjunction, moving forward. and enters into the main joint pipe 7. When the specified amount has been inserted, move the nut 11 and connect the joint pipe 7.
At the same time, turn the oak 12 backwards and return it, and firmly press it against the end surface of the Japanese/hand pipe 8 to fix the connection between the double-jointed bow and the pipe.

In FIG. 1, 13 is a cassette plate protruding from both end faces of the PC beam section 2, and each plate & J steel frame section 3
, 3 is fixed to the web.

Next, Mr. Komama talks about the construction of the beams. As shown in FIG. 1, the beam body 1 is assembled in advance at a factory or at a factory by connecting the PC beam structure 2 and the steel beam parts 3, 3 with a joint pipe 7.8 and a threaded rod 1O. .

Then, the beam body 1 is erected by a crane or the like between the columns that have been erected, and then the beam body is temporarily installed between the columns. That iron,
As shown in Fig. 3, the main beam reinforcement 13 and the hyster wrap 14
Reinforcement is arranged, concrete is poured, and the middle part is made of RC and both sides are made of SRC.

In addition, without assembling the PCC beam part and the steel beam parts 3, 3 in advance, after attaching the steel beam part to the column in advance,
After the columns are erected, PC beams may be suspended between the steel beams and connected to the steel beams by the connecting means 4.

Another embodiment of the PC beam portion is shown in FIG. In this example, P
Inside the C beam part 2, four reinforcing bars 5a... are arranged as reinforcement 1-, and reinforcing bars 15 are arranged at regular intervals on these reinforcing bars.
is the winding. Further, a joint pipe 8 (ri) forming the connecting means 4 (fI) is attached to the inner surface of the flanone 3a of the steel beam portions 3,3.

・Assembling the main body 1a and its construction method are also explained above. This is substantially the same as in the case of the main body l.

In addition, on each side above, the connection means are shown in the figure υ:J
It is not limited to 1+IJ, and for example, the joint pipe 8 may be attached in a 1'I through state. Masuzuki constructed the members using stick legs without using plates.
You can also use it.

As explained above, according to the present invention, the middle part of the beam is a Pc beam structure that can be connected to the steel beam parts on both sides, so it is possible to provide rigidity during temporary construction, which is advantageous in construction. It is.

[Brief explanation of the drawing]

1st] Figure 2 is a perspective view of the back showing an embodiment of the present invention, Figure 2 is a cross-sectional view taken along lines n- and Il in Figure 1, Figure 3 is an enlarged cross-sectional view of the connecting means, and Figure 4 is a beam. FIG. 5 is a perspective view of essential parts showing another embodiment of the present invention. 1.1a... Beam body, 2... PC beam part, 3... Steel beam part, 4... Connection means, 5, 5a - Reinforcing bars, 7, 8 Joint pipe, 9... Mounting on plate, 1o・Threaded rod, 11゜1
2...Natsuto. -1- Patent applicant Hasegawa Komuten Co., Ltd.

Claims (1)

[Claims] 1) Connecting means on both sides of the C beam and this PC beam.
Composite beam with reconnected steel beam parts.