JPS6256292B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reinforcing assembly method for underground beams in steel reinforced concrete (SRC) buildings.

Previously, this type of underground beam reinforcement assembly had been carried out by constructing reinforcing steel scaffolding, which had the disadvantage of requiring a large amount of man-hours and materials, as well as requiring a long construction period. .

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a completely new method for assembling reinforcement of underground beams in SRC buildings without the need to construct reinforcing steel scaffolding for assembling reinforcement. The purpose is to provide a method.

First, an embodiment of the method of the present invention will be explained based on the drawings.

In Figures 1 and 2, 1 is a beam material on the second floor of a pre-built SRC structure,
Beam steel frame 2, upper and lower end main reinforcement 3... and stirrup 4...
It is made up of. Beam steel frame 2 of the second floor beam material 1
Prior to its erection, plates with holes 5 are hung and fixed at appropriate intervals in the tension direction on the lower end surface of the structure.

Reference numeral 6 denotes an inverted T-shaped jig consisting of a vertical member 6A that is extendable and retractable by a turnbuckle mechanism, and a horizontal member 6B that is integrally connected to the lower end of the vertical member 6A. , an engagement pin that fits into a hole in the lower end plate 5 of the second floor beam steel frame 2 is provided. Then, the inverted T-shaped jig 6
is removably connected to the second floor beam 1 by engaging the pin at its upper end with the hole in the plate 5.

Next, the inverted T connected to this second floor beam steel frame 2
On the horizontal member 6B of the character-shaped jig 6, place the upper main reinforcements 8 for constructing the underground beam 7 in the tension direction, and then place the stirrups 9 on the upper main reinforcements 8 for the underground beam 7. Pass it around.

Next, the lower end main reinforcing bars 10 for the underground beams 7 are placed and supported inside the lower part of the stirrups 8.

Then, the upper and lower end main reinforcements 8..., 10... and stirrups 9... are bound and fixed to each other, and the reinforcement assembly of the underground beam 7 is completed. At that time, by adjusting the length of the vertical member 6A of the inverted T-shaped jig 6, the level is adjusted so that the reinforcement of the underground beam 7 is horizontal.

After this, concrete will be poured,
Prior to this, the inverted T-shaped jig 6 is removed from the plate 5, rotated through approximately 90 degrees, and then pulled out from the reinforcement of the underground beam 7 to be reused in another construction work. Note that the plate 5 is buried.

FIG. 3 shows a jig 6 of another shape, in which a fixing part 6a is formed at the upper end of the vertical member 6A, which is detachable from the lower horizontal part of the steel frame 2 of the second floor beam material 1. . In this way, it is not necessary to provide the plate 5 on the steel frame 2 in advance as in the above-mentioned embodiment, and the setting position of the jig 6 in the tension direction can be arbitrarily selected, which is convenient. Note that 11 is a hook that is swingable in the direction of the arrow (x).

In summary, the reinforcing assembly method for underground beams according to the present invention involves removably connecting a jig having a horizontal member at the lower end of the vertical member to a pre-constructed second floor beam, and It is characterized in that an upper end main reinforcement for an underground beam is placed and supported on the member, a stirrup is placed across the upper end main reinforcement, and a lower end main reinforcement for an underground beam is placed and supported inside the lower part of the stirrup.

In other words, the 2
By effectively utilizing floor beam materials to construct underground beams, there is no need to construct a special reinforced scaffold for assembling underground beams, as was the case with conventional construction methods. As a result, we were able to achieve a significant reduction in man-hours and materials, as well as a significant reduction in construction period.

In addition, by using a telescopic jig as the jig, it is possible to easily improve the reinforcement precision.

[Brief explanation of the drawing]

The drawings are for explaining the reinforcing assembly method for underground beams according to the present invention, in which FIG. 1 is a partially sectional side view, FIG. 2 is a perspective view of the main part, and FIG. FIG. 7 is a side view of a main part showing a jig having another shape. 1...2nd floor beam material, 6...jig, 6A...vertical member of 6, 6B...horizontal member of 6, 7...underground beam, 8...upper main reinforcement of 7, 9...stirrup, 10...lower end main reinforcement of 7.

Claims (1)

[Scope of Claims] 1. A jig 6 having a horizontal member 6B at the lower end of the vertical member 6A is removably connected to the second floor beam 1 which has been constructed in advance, and is mounted on the horizontal member 6B of the jig 6. The upper end main reinforcement 8 for the underground beam 7 is placed and supported, the stirrup 9 is hung across the upper end main reinforcement 8, and the lower end main reinforcement 10 for the underground beam 7 is placed and supported on the inside of the lower part of the stirrup 9. A reinforcing assembly method for underground beams characterized by the following. 2. The method according to claim 1, wherein the jig 6 is a jig whose vertical member 6A is expandable and retractable. 3 As the jig 6, a removable attachment part 6 to the second floor beam material 1 is provided at the upper end of the vertical member 6A.
3. The method according to claim 1 or 2, characterized in that a material having a shape of "a" is used.